EP3565780A1 - Verfahren zur befüllen von zylindrischen behälten behältern, insbesondere dosen und füllanordnung aus füllvorrichtung und behälter - Google Patents
Verfahren zur befüllen von zylindrischen behälten behältern, insbesondere dosen und füllanordnung aus füllvorrichtung und behälterInfo
- Publication number
- EP3565780A1 EP3565780A1 EP17842415.6A EP17842415A EP3565780A1 EP 3565780 A1 EP3565780 A1 EP 3565780A1 EP 17842415 A EP17842415 A EP 17842415A EP 3565780 A1 EP3565780 A1 EP 3565780A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- filling
- container
- tube
- volume
- valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
- B67C—CLEANING, FILLING WITH LIQUIDS OR SEMILIQUIDS, OR EMPTYING, OF BOTTLES, JARS, CANS, CASKS, BARRELS, OR SIMILAR CONTAINERS, NOT OTHERWISE PROVIDED FOR; FUNNELS
- B67C3/00—Bottling liquids or semiliquids; Filling jars or cans with liquids or semiliquids using bottling or like apparatus; Filling casks or barrels with liquids or semiliquids
- B67C3/02—Bottling liquids or semiliquids; Filling jars or cans with liquids or semiliquids using bottling or like apparatus
- B67C3/22—Details
- B67C3/26—Filling-heads; Means for engaging filling-heads with bottle necks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B3/00—Packaging plastic material, semiliquids, liquids or mixed solids and liquids, in individual containers or receptacles, e.g. bags, sacks, boxes, cartons, cans, or jars
- B65B3/04—Methods of, or means for, filling the material into the containers or receptacles
- B65B3/06—Methods of, or means for, filling the material into the containers or receptacles by gravity flow
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B3/00—Packaging plastic material, semiliquids, liquids or mixed solids and liquids, in individual containers or receptacles, e.g. bags, sacks, boxes, cartons, cans, or jars
- B65B3/18—Controlling escape of air from containers or receptacles during filling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B3/00—Packaging plastic material, semiliquids, liquids or mixed solids and liquids, in individual containers or receptacles, e.g. bags, sacks, boxes, cartons, cans, or jars
- B65B3/26—Methods or devices for controlling the quantity of the material fed or filled
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
- B67C—CLEANING, FILLING WITH LIQUIDS OR SEMILIQUIDS, OR EMPTYING, OF BOTTLES, JARS, CANS, CASKS, BARRELS, OR SIMILAR CONTAINERS, NOT OTHERWISE PROVIDED FOR; FUNNELS
- B67C3/00—Bottling liquids or semiliquids; Filling jars or cans with liquids or semiliquids using bottling or like apparatus; Filling casks or barrels with liquids or semiliquids
- B67C3/02—Bottling liquids or semiliquids; Filling jars or cans with liquids or semiliquids using bottling or like apparatus
- B67C3/22—Details
- B67C3/26—Filling-heads; Means for engaging filling-heads with bottle necks
- B67C2003/2657—Filling-heads; Means for engaging filling-heads with bottle necks specially adapted for filling cans
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
- B67C—CLEANING, FILLING WITH LIQUIDS OR SEMILIQUIDS, OR EMPTYING, OF BOTTLES, JARS, CANS, CASKS, BARRELS, OR SIMILAR CONTAINERS, NOT OTHERWISE PROVIDED FOR; FUNNELS
- B67C3/00—Bottling liquids or semiliquids; Filling jars or cans with liquids or semiliquids using bottling or like apparatus; Filling casks or barrels with liquids or semiliquids
- B67C3/02—Bottling liquids or semiliquids; Filling jars or cans with liquids or semiliquids using bottling or like apparatus
- B67C3/22—Details
- B67C3/26—Filling-heads; Means for engaging filling-heads with bottle necks
- B67C2003/2671—Means for preventing foaming of the liquid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
- B67C—CLEANING, FILLING WITH LIQUIDS OR SEMILIQUIDS, OR EMPTYING, OF BOTTLES, JARS, CANS, CASKS, BARRELS, OR SIMILAR CONTAINERS, NOT OTHERWISE PROVIDED FOR; FUNNELS
- B67C3/00—Bottling liquids or semiliquids; Filling jars or cans with liquids or semiliquids using bottling or like apparatus; Filling casks or barrels with liquids or semiliquids
- B67C3/02—Bottling liquids or semiliquids; Filling jars or cans with liquids or semiliquids using bottling or like apparatus
- B67C3/22—Details
- B67C3/26—Filling-heads; Means for engaging filling-heads with bottle necks
- B67C2003/2671—Means for preventing foaming of the liquid
- B67C2003/2674—Means for preventing foaming of the liquid by creating a conical shaped flow directed to the container wall at the container neck height
- B67C2003/268—Means for preventing foaming of the liquid by creating a conical shaped flow directed to the container wall at the container neck height by means of a flow channel integral with the filling nozzle
Definitions
- the invention relates to a method for filling cylindrical containers, in particular cans, with fluid as well as filling arrangements of filling device and a predetermined cylindrical container, which are suitable for carrying out the method.
- Filling devices and methods for filling containers are known in various embodiments.
- oxygen-sensitive liquids it must be prevented that the liquid comes into contact with the oxygen of the ambient air and undesired gas binding, gas exchange or gas entry occurs, which can result in a quality change of the liquid due to oxidation reactions or increased germ load. Therefore, containers to be filled with such a liquid are evacuated prior to the actual filling operation, for example, and / or the container interior is purged with an inert gas, etc., for which purpose suitably controllable feeding and discharging gas paths are formed in the respective filling devices.
- the filling devices may for example have movable tubes and valves, so that the flushing pipe can be introduced into the container before a purge gas supply is opened.
- Another approach to avoiding contact with atmospheric oxygen is the use of filling devices having a balloon-like expandable body, which is inserted into the container, enveloping a tube, prior to filling. Through this tube, an expansion medium is introduced into the balloon-like body, so that it expands until it completely fills the interior of the container and thereby displaces the ambient air from the container. The liquid then introduced into the container causes the expansion medium to be forced back out of the balloon-like body via the tube.
- a corresponding method and a device are described in DE 10 201 1 100 560 B3.
- CONFIRMATION COPY To always fill the same capacity in the container, in the prior art for filling the container with a desired filling volume, the filling amount determined by the filling level, which is set by the position of the opening of a return air pipe or a return air hole of the filling or by means of sensor (level probe ) and actuator (valve) and appropriate control logic - usually electronic or electropneumatic - is set.
- Another way to fill the same amount of filling in the container provides the control logic by means of flow meters (usually magnetically inductive or by means of the Coriolis force). In this rule logic, the container volume is unimportant, since the amount of liquid is measured directly. Disadvantage of these measuring devices is their price / performance ratio and that each expensive control electronics (PLC) must be very precise and expensive actuators must be used.
- a method and a device for measuring medium-free filling of a container with a constant filling level, even with different container shapes, are known from DE 10 2014 014 317 A1.
- the method provides that a valve cap which has in a housing a gas valve and a liquid valve with valve seats, is placed tightly on a container, and that a displacement element which is longitudinally displaceable axially from the housing, in which it with the surrounding valve seats Ring gap is formed, is introduced into the container.
- filling fluid flows into the container until the annular gap is flooded before the liquid valve is closed.
- the displacement element is pulled out of the container, wherein the liquid volumes from the annular gap run into the container.
- US Pat. No. 4,541,463 also addresses the problem of filling a container with little turbulence and under exclusion of air in order to prevent foaming.
- the containers there are paper or plastic tube packages formed on a tubular mandrel slidably disposed about a filling tube.
- the filling tube extends from the bottom of a reservoir, which relative to a pump equipped with pumping derrohr, whose suction-side end opens below the liquid level in the reservoir, while the outlet end is successively connected to the filling tubes as a function of the angular position of the reservoir with respect to the conveying tube.
- the pump delivers the fluid when a connection is made between the outlet side of the conveyor tube and the inlet of the respective filling tube.
- a piston closing the fill tube is moved to open the fill valve when the container is made.
- the mandrel is moved upward, so that the container is pulled off a little from the mandrel due to the positive retention with the ground support. This is to prevent that the mandrel used for the production of the container comes into contact with the inflowing liquid.
- the bottom support is moved downwards, thus pulling the container off the mandrel. The filling ends when the valve is closed and the delivery pipe is no longer connected to the filling tube due to the rotational movement of the reservoir.
- the container For filling foaming liquids such as beer or soft drinks, the container must also be covered with increased pressure in order to prevent or minimize foaming during the filling process.
- pressure filling the container to be filled in each case bears in a sealed manner against the filling device, so that a pressurized gas (inert gas or carbon dioxide gas) is usually pre-stressed before the actual filling phase via a gas path formed in the filling device. This is displaced during the filling process by the liquid flowing into the container as a return gas from the container interior, which can also be done via a controlled, formed in the filling gas path.
- a pressurized gas inert gas or carbon dioxide gas
- the method includes displacing the air contained in the container by introducing back pressure gas into the container before sealingly closing the open end of the container such that the container passes through the open end of the container upon insertion of a filling piston filled with a pressurized predosed amount of liquid , Can be set by means of a backpressure gas under counter pressure, which corresponds to the pressure of the liquid and is greater as the atmospheric pressure.
- DE 10 2013 113 070 B3 relates to a filling device which enables a high-purity filling by optimized separation of a clean room from a region with lower purity requirements and is provided by the improved seal, in particular for pressure-filling cans.
- a Abdichttulpe which includes, as usual, in a filling assembly, the container opening and the discharge opening of the filling device, but now has two sealing elements, one of which seals the transition between the Abdichttulpe and the housing of the filler and the second, the free, in the filling assembly the container facing the end is arranged, the first seal center! radially outside a control means on the outer peripheral side surrounds and thus seals the transition between the Abdichttulpe and the separation point between the clean room area and the other area.
- Another object of the invention is to provide a device of simpler design, which allows a filling of cylindrical containers or at least substantially cylindrical containers such as cans with reduced oxygen uptake even without rinsing step and without complex measurement and control technology.
- the basic idea of the invention is based on the use of a filling device with a filling valve, which has a piston guided in a filling tube, for filling a predetermined cylindrical container whose concentric container opening has a diameter which is 70 to 99.5% of the container internal diameter, such as This is the case, for example, with 80 to 90% for the most common standard sizes of beverage cans.
- a filling device with a filling valve, which has a piston guided in a filling tube, for filling a predetermined cylindrical container whose concentric container opening has a diameter which is 70 to 99.5% of the container internal diameter, such as This is the case, for example, with 80 to 90% for the most common standard sizes of beverage cans.
- These are made from a metal such as aluminum or tinplate very exactly in terms of their volume.
- Under cylindrical containers in this case also the can-typical forms are to be understood, in which the upper end is tapered slightly conically towards the filling.
- deviating shapes such as elliptical or poly
- the filling opening is concentric with the cross-sectional shape of the container and has a congruent shape whose dimensions make up about 70 to 99.5% of the cross-sectional dimensions of the container.
- the filling valve now has an outer diameter which is adapted to the diameter of the container opening, so that a filling tip of the filling valve - under filling tip is here understood the entire section of the filling valve, which can be accommodated in the container - coaxial without friction, but also low backlash in the sense of almost free of play can be absorbed by the container opening in the container when a relative movement between the filling valve and the container is performed to each other.
- This may be the insertion of the filling valve into the container; but it can also be moved axially by means of a correspondingly movable container receptacle in the direction of the filling valve, to receive the filling valve in the container, so that in both Falls the inserted portion of the filling valve - even without expandable balloon elements - occupies a volume in the container, which accounts for up to 99% of the container volume depending on the Greventildurchurchmesser.
- either the ambient air present in the container (and thus oxygen) can be displaced from the container by up to 99%, so that purge gas can be dispensed with or the use can at least be minimized.
- the ambient air present in the container is compressed with sealed container opening during insertion of the filling valve, so that the pressure in the container increases and can be dispensed with span gas; In any case, the amount of clamping gas can be significantly reduced, since the pressure is generated by the mechanical displacement by means of the filling valve.
- a first embodiment of a method according to the invention for filling a cylindrical container whose concentric container opening has a diameter which is approximately 70 to 99.5%, preferably 80 to 90%, of the container inner diameter provides the following steps: a) Initially, a relative movement between the closed filling valve and the container to each other performed so that the filling valve is inserted through the container opening into the container (or the container with its opening on the filling valve is streaked) until the filling tip of the filling valve is received in the container.
- the filling tip is taken as deep as possible, optionally until the end face of the filling valve contacts the bottom of the container in order to achieve the greatest possible displacement / compression of the air present in the container (or another gas).
- the end face of the filling valve may be shaped corresponding to the bottom of the container or have spacers, etc.
- the filling valve is opened by transferring the piston to an open position and carried out an upward movement of the filling tube with the piston in the open position, so that on to the container bottom facing end face of the filling valve with the valve opening below a fluid level in a gap volume, which is formed between a container wall and the filling valve.
- a filling valve contacting the bottom it may be provided that in the end face of the filling valve, more precisely the filling tube, channels are introduced, which allow the inflow of the fluid after opening the valve even if the end face of the filling valve still the ground the container contacted before the open filling valve is moved upwards.
- the inflowing fluid has contact only with the gas present in the container in the gap volume. Since this contact surface is very small due to the geometric conditions of the filling arrangement, even in the presence of atmospheric oxygen, the uptake into the fluid is extremely small. In addition, it is a bottom-to-bottom, lower-layer filling process characterized by minimal turbulence and turbulence, which further reduces the potential for oxygen uptake.
- a relative upward movement of the filling valve within the container (this is done by movement of the filling valve or container) to the container opening during the filling process according to a predetermined control parameter, which takes into account the predetermined filling volume in the container, so that the filling volume is achieved when the filling valve arrives in the region of the container opening, wherein a lower-layer filling operation is achieved by the fluid level in the gap volume during the filling operation in the upward movement above the end face of the filling valve.
- the filling valve is closed when the predetermined filling volume is reached in the container.
- the closed filling valve is withdrawn in order to carry out the procedure on a next container.
- filling methods can be distinguished by whether the gas is displaced from the container in step a) when the container opening is not sealed around the filling valve, or compressed in the container when the container opening is sealed around the filling valve.
- the filling valve to the filling tube additionally comprises a separator tube which is independent of the filling tube and the piston can be controlled controlled.
- the outer diameter of the filling valve is in this case determined by the separating tube, which surrounds the filling tube, and is matched to the diameter of the container opening.
- This also makes it possible to use conventional filling valves by retrofitting a separately movable separating tube by fitting the diameter of the filling valve to the container opening through the separating tube.
- this also a filling valve can be adjusted by using correspondingly different separation tubes to different container openings.
- Step b) is now divided into several substeps:
- the piston is transferred to the open position, so that the fluid can flow into the radial gap volume between the container wall and the separator tube. Fluid flows into the radial gap volume until a pressure equalization exists between a preset filling pressure and a predeterminable container pressure, whereby a filling level in the radial gap volume is determined.
- a relative upward movement of the filling tube with the piston in the open position is carried out within the separating tube, which is left in its fully inserted position, in which it has the axial gap to the bottom. With the upward movement of the filling tube with the piston in the open position, the separating tube is filled with fluid.
- the upward movement of the filling valve, or the filling tube with piston is tuned within the container to the container opening according to a predetermined control parameters, which takes into account the predetermined filling volume in the container.
- a predetermined control parameters which takes into account the predetermined filling volume in the container.
- step bO the fill level achievable in the radial gap volume is smaller than a maximum fill level predetermined by the container in the radial gap volume (complete filling of the gap volume)
- the method also comprises the steps:
- step b2) after step b2) and before d1) performing a relative downward movement of the filling tube with the piston in the closed position, wherein the volume of fluid present in the separator tube to the predetermined height is pressed through the axial gap in the radial gap volume and there increases the filling height.
- steps b) to a1) can be repeated until the gap volume is completely filled up to the maximum filling level in step a1).
- c1) Then with the filling tube with the piston in the open position, a relative upward movement is carried out within the separating tube up to the predetermined height, which then lies in a region of the container opening, wherein the separating tube is again filled with fluid.
- the separation pipe can also be moved upwards in concert with the filling valve, as soon as the radial gap volume is completely filled. The opening of the separation tube should always remain below the liquid level.
- step d1) after closing the filling valve in the region of the container opening corresponding to step b2), the withdrawal of the separating tube follows, wherein the fluid present in the separating tube remains in the container.
- a first height in a first step b) depending on the achievable in step bO) filling level with the preset filling pressure and the predeterminable container pressure also is previously known to be defined in the radial gap volume and thus predetermined, so that the volume which is limited in the separation tube through the filling tube in the first predetermined height corresponds to a volume difference of the gap volume between the maximum filling level and the achievable filling level.
- the sub-layer filling process is improved by the separating tube, so that quasi-laminar flow conditions can be achieved.
- the fluid level in the gap volume rises very quietly without turbulence, the oxygen uptake at the contact surface is further reduced.
- the predetermined control parameter in step c) may be a pre-set fill time resulting from a predetermined fill volume in the container and a set fill volume flow of the fill.
- the predetermined filling volume corresponds to a nominal volume in the case of cans, since cans, unlike bottles, are manufactured very precisely.
- the closing of the filling valve in step d) takes place after the predetermined filling time.
- the filling time can thus be predetermined before the filling process and entered in a control step for setting up the filling device in its control device.
- the method according to the invention which uses the filling arrangements according to the invention, can thus be carried out virtually without measuring means - none of the measuring devices or measuring means required in the prior art are required.
- the setting and monitoring of the desired filling volume by means of a control instrument, such as a magnetic-inductive flow meter or by means of a filling height determination, can be dispensed with.
- aO at a time before or during step a), ie also before the actual filling a sealing of the container opening to the filling valve to set up the filling device for the intended filling takes place, such as by an annular sealing element, such as a Abdichttulpe is placed, the Transition between filling valve and container at the container opening seals.
- the time of sealing before or during the insertion of the filling valve determines the pressure that is present after complete insertion of the filling valve in the sealed container.
- a volume compensator attachment between the container opening and the sealing element is used sealingly to set up the filling device when the container opening is sealed around the filling valve.
- the volume compensator attachment is designed such that a volume of an annular gap formed in the volume compensator attachment between its wall and the inflation valve corresponds to a displaced volume,. which is caused by a part of the filling valve, which is still inside the container when closing the filling valve in step d).
- the volume present in the container in this case corresponds to the difference between the predetermined filling volume and the displaced volume.
- a further embodiment provides that the sealing element, or, if used, the volume compensator attachment has a check valve or overflow valve. This prevents the pressure in the container from exceeding a maximum pressure predetermined for the filling process. Due to a low overpressure in the pressure filling, which is kept constant, it comes in conjunction with the reduced contact area and the low-turbulence filling to a further reduced oxygen input.
- the pressure can also be pressed during the "pumping step" when the fluid volume present in the separating tube below the closed filling tube is pressed into the annular gap by the relative downward movement of the closed filling tube Furthermore, during the displacement of the gas still present in the gap volume through the check or overflow valve, this forcing or pumping ensures that the oxygen uptake remains minimal or is further reduced, whereby this is also a very rapid quasi "laminar" lower-layer filling process is achieved.
- a filling valve is used with a combined separating-filling tube, which has the same outer diameter, which is adapted to the diameter of the container opening, a larger inner diameter than the above filling tubes and thus is thin-walled.
- the associated controlled guided piston has a diameter which is adapted to the enlarged inner diameter of the separating Füilrohrs, that is also enlarged.
- the piston guide and - control in the separation-filling tube is designed such that the piston in addition to the open position in which the piston for inflowing of the fluid proximal, ie is arranged next to a sealing seat of the separating filling tube, and thus corresponds to a normal open position of a valve, at least a second open position, in which the piston distal, ie further away, is arranged to the sealing seat of the separating filling tube, so that within of the separating filling tube, a displacement volume can be provided, which supplements the volume of fluid which has flowed into the gap volume to the predetermined filling volume.
- the position of the piston in the second open position is thus dependent on the height of the predetermined container and the diameter difference between the container and Gu- separating tube, since it is provided that in the second open position, the piston end, when the separation-filling tube completely in the container is taken and extends substantially to the container bottom, in the region of the container opening, so that the sum of the volume of fluid present in the separating filling tube and the volume of fluid in the gap volume results in the filling volume for the predetermined container.
- step c) the predetermined control parameter is a filling time that is matched with the movements of the filling valve.
- step bO After the filling valve has been completely inserted in step a), the piston is transferred to the first open position of the filling valve for allowing the fluid to flow into the radial gap volume between the container wall and the separating filling tube, and b1.1) an upward movement of the separator -Füllrohrs carried out with the piston in the open position, wherein the fluid continues to flow into the radial gap volume until in the radial gap volume of the preset filling pressure and a predeterminable container pressure dependent filling level is reached, which is predetermined before the filling.
- the second predetermined height is also set here before the actual filling depending on the achievable in b1.1) fill level in the radial gap volume, so that a volume that is limited below the separation filling tube in the second predetermined height, a volume difference of the gap volume between the maximum filling level and the filling level achievable in b1.1).
- step c1) the separation fill tube is transferred to a position where an axial gap of 3 to 5 mm remains between the lower end of the separation fill tube and the container bottom.
- the separation fill tube remains in this position while the piston is transferred to the second open position of the fill valve, which is in the region of the container opening, while the separation fill tube is filled with the intended displacement volume of fluid.
- step d1) the piston moves to the closed position and the fluid passes from the displacement volume of the separation fill tube into the container so that the container is completely filled and in step e) the closed fill valve is withdrawn to fill a next container.
- the filling valve has an elastically expandable body on at least one or a portion which is completely inserted into the container in step a).
- a balloon body may be arranged radially surrounding the filling tube, separating tube or filling separating tube in the corresponding region.
- the elastically expandable body is allowed to expand. This can be done actively by introducing a gas into the elastically expandable body; in cases where the container is sufficiently external pressure resistant and also made of more resistant material than the elastically expandable body, after the filling valve has been fully inserted, with air displaced, after sealing the container by retracting the filling valve or filling tube with the piston in the closed position in the separation tube, a negative pressure in the container can be created, which leads to expansion of the elastically expandable body. The expansion continues until the elastically expandable body
- a2) abuts against the inner surfaces of the container and, when inserted, against the inner surface of the volume compensator attachment, all of the air being forced out of the container through the valve.
- b1) It follows the piston into the open position of the filling valve to allow the fluid to flow, wherein the elastically expandable body a) is compressed until it b) rests against the filling valve and the radial gap volume between the container wall and the filling valve and if used, the annular gap between the volumetric compensator attachment and the filling valve is filled.
- step b2 In the case of a filling valve in which the elastically expandable body is arranged on or around the separation tube, during step b2) the separation tube is left in the fully inserted position during the upward movement of the filling tube with the piston in the open position, wherein the separating tube with fluid is filled.
- the filling valve is closed or the piston is brought into the closed position when the predetermined height in the region of the container opening is reached in step b2), so that the sum of the volumes within the separating tube and the gap between the container and the separating tube and optionally the volume compensator attachment the give predetermined filling volume, so that by retracting (d2) of the separation tube, the fluid volume from the separation tube passes into the container, and, if used, the volume of the volume compensator attachment runs after opening the seal in the container, so that the container completely filled is, if in step e) the closed filling valve is withdrawn.
- a filling arrangement accordingly consists of a filling device and a cylindrical container whose concentric container opening has a diameter which is 70 to 99.5% of the container inner diameter.
- a filling valve which has a piston controllably guided in a filling tube as usual.
- the filling valve is formed so that the outer diameter of the filling valve is adapted to the diameter of the container opening, ie slightly smaller fails, so that the coaxial insertion of the filling valve into the container through the container opening almost free of play, for example with a maximum radial clearance of 1 mm can, however, the filling valve contact and without friction and can be executed.
- the filling valve will usually also have a circular cross-section corresponding to the usual circular cross-sectional shapes of the container such as cans. If the shape of the container to be filled and the container opening deviate from the circular shape, then the outer contour of the filling valve is adapted thereto, so that here too the insertion of the filling valve into the container at the container opening is almost free of play.
- the filling device of a filling arrangement is designed such that the filling valve and the container can be moved relative to one another, wherein the filling valve or a container receptacle can be moved accordingly.
- the arrangement ensures that the filling tip of the filling valve coaxial, that is centered, is introduced into the container through the container opening.
- the geometrical conditions of the container diameter, the opening diameter and the filling valve diameter ensure that the introduced filling tip of the filling valve can take up a volume in the container which is in the range of 49 to 99% of the container volume and ensure a corresponding displacement or compression can.
- the filling tip of the filling valve predetermined for introduction thus has a volume which occupies a volume in the container in the range from 49 to 99% of the container volume.
- the filling device has no return air tube.
- the vom Kunststoffrohrlose control is made possible by the knowledge of the exact volume ratios of the predetermined container and the matching filling device, since for containers such as cans, which are made with always the same shape, diameter and height, the predetermined filling volume corresponds to the nominal volume and thus with the predetermined Filling volume in the container obtained filling level - unlike bottles, for example - is always constant.
- the controller may therefore be configured such that the fill assembly may be controlled in response to only a predetermined fill time and / or a predetermined level in which the upward movement of the fill tube is terminated and the piston is transferred to the closed position such that the controller is not only return air tube loose, but also essentially without measuring means.
- the filling time as a preset control parameter results from the predetermined filling volume in the container and a set filling volume flow of the filling device.
- the rate of upward movement of the fill valve is then adjusted to the predetermined fill time and closing of the fill valve occurs after the predetermined fill time.
- the predetermined height at which the upward movement of the filling valve or the filling tube is terminated and the piston is transferred to the closed position can be used as a preset control parameter for controlling the filling operation and can be correspondingly input to the control device.
- the control device For such a control, none of the required in the prior art measuring equipment or measuring means are required.
- the filling arrangement can have a filling valve, which has a separating tube at the filling tip around the filling tube, which can be moved independently of the filling tube and the piston in a controlled manner.
- the outer diameter of the filling valve which is adapted to the container diameter, is determined by the separating tube.
- the filling tube may be formed as a combined separation-filling tube, whose outer diameter is adapted to the diameter of the container opening.
- the combined separation fill tube is thin-walled and has an increased inside diameter compared to a conventionally sized fill valve. Consequently, the controlled guided piston is designed as a correspondingly flared piston whose diameter is adapted to the inner diameter of the separating filling tube.
- the piston has at least one second open position in addition to a first open position in which the piston is arranged proximally, ie closest to a sealing seat of the separating filling tube Position in which the piston is located distally, ie remote from the sealing seat of the separation-filling tube, and thus an increased stroke of the piston is provided in the separation-filling tube.
- the position of the piston in the second open position is dependent on the height of the predetermined container and the diameter difference between the container and filling separation pipe, since it is provided that in the second open position, the piston end, when the separation-filling tube completely in the container is received and extends substantially to the container bottom, is in the region of the container opening, so that the Sum of the present in the separation filling tube fluid volume and the fluid volume in the gap volume, the filling volume for the predetermined container results.
- the filling arrangement can have a sealing element, which at the container opening around the filling valve, d. h., Depending on the embodiment of the filling tube, the separation tube or the combined separation-filling tube, is arranged.
- the filling arrangement may additionally comprise a volume compensator attachment which is arranged between the sealing element and the container opening around the filling valve (filling tube, separating tube or combined separating filling tube).
- the seal or the volume compensator attachment may have a valve, preferably a non-return or overflow valve.
- the filling valve can have radial flow channels on a front side of the filling tube, of the separating tube or of the combined separating filling tube facing a container bottom, depending on which filling valve is used, in order to allow fluid to emerge from an opened filling valve which contacts the container bottom.
- Such complete reception of the filling valve up to the ground contact is advantageous for a maximum displacement seal.
- the end face of the filling valve may be formed according to the contour of the container bottom. However, care must be taken when contacting the container bottom on a precise control of the relative movement in order to prevent the container is deformed and thus damaged. Since the exact container geometry determines the filling volume, it is particularly important that no deformations occur on the container, which lead to a container volume change.
- the filling valve has at one pointing to a container bottom end of the filling tube, the separation tube or the combined separation-filling tube a circumferential or a plurality of spaced spacers, which are designed to be elastic / resilient, and so can contact the container bottom, without to risk the deformation of the same.
- a circumferential single-acting annular seal with valve function such as a sealing lip
- a sealing lip which not only acts as a resilient spacer, but also opens in one direction to allow fluid from the filling valve to flow into the container, but vice versa seals, and so a backflow - or, if the tank pressure is higher than the filling pressure, also prevents gas from the container from entering the area under the filling valve opening.
- the filling valve along the insertable filling tip on at least a portion or around a portion of the filling tube or the separating tube (or the combined filling-separating tube) an elastically expandable Body has.
- the filling valve at the filling tip may have a tapering towards the end centering.
- a further embodiment may provide that the filling tube and the piston each have a replaceable Gunabites so that the filling valve quickly and easily renewed without interrupting the filling operation by replacing the tip sections in case of signs of wear, for example, or - with other geometries - adapted to other containers can be.
- the filling tube or the piston can have at least one sliding radial spacer device for centering the piston in the filling tube.
- Another embodiment of the filling device according to the invention provides for a further improvement of the filling process by minimizing the inclusion of gas bubbles by a directed flow, which would lead to undesirable foaming at the end of the filling process.
- the filling valve on an inner side of the filling tube or on an outer side of the piston or on both above the respective sealing surfaces on a Strömungsleit Jardin which is adapted to put the fluid emerging from the filling valve in a vortex or vortex movement.
- the rotating flow of the fluid prevents the fluid from hitting and rebounding radially on the side wall of the vessel, thereby trapping gas bubbles that could accumulate as the fill valve rises and cause increased foaming.
- the rotating flow produces significantly less gas bubbles, which are also smaller and located near the surface of the rising fluid level so that they collapse before the filling is completed, thereby preventing the increased foaming.
- the flow guide structure can be formed, for example, by one or more spiral webs, similar to a thread or by a blading.
- the blading may be formed by a ring of vanes which, at least in one plane, i. H. in the circumferential direction with respect to the radial plane, are curved.
- the guide vanes can also be curved in two planes, ie in the circumferential direction and in the longitudinal direction with respect to the radial plane.
- the blading may be formed by a ring of blades, which may be curved or unbent, and disposed on the rotatable piston.
- the piston is driven to rotate.
- the radial spacer device may be formed as a flow-guiding structure, so that advantageously two functions are fulfilled with one element.
- FIG. 2 shows side sectional views of an alternative filling arrangement with a filling device, which additionally has a separating tube, according to steps a), b1) and b2) of an alternative embodiment of the method according to the invention
- 3 shows a side sectional view of a further embodiment of the filling arrangement from FIG. 2, in which the filling opening on the filling valve is sealed during a step aO) of an alternative embodiment of the method according to the invention
- FIG. 4 shows a side sectional view of a further embodiment of the filling arrangement from FIG. 2, in which a volume compensator attachment is arranged between sealing element and filling opening, during a step b2) of an alternative embodiment of the method according to the invention, FIG.
- FIG. 5 shows side sectional views of the filling arrangement from FIG. 3 corresponding to steps b2), a1) and b1) as a continuation of the embodiment of the method according to the invention according to FIG. 2, FIG.
- FIG. 6 shows side sectional views of a further filling arrangement according to the invention with a filling valve made of the thin-walled combined separating and filling pipe and a wider piston with a larger stroke and two open positions according to steps a) to d1) of an alternative embodiment of the method according to the invention
- FIG. 7 shows side sectional views of a further filling arrangement according to the invention corresponding to FIG. 4, additionally with an elastically expandable body surrounding the separation tube according to steps a) to d1) of a further alternative embodiment of the method according to the invention, FIG.
- FIG. 8 shows schematic side sectional views of a filling arrangement according to FIG. 1 in accordance with the steps 0) to e) of an embodiment of the method according to the invention with the filling level as a whole, FIG.
- FIGS. 9 shows schematic side sectional views of a filling arrangement according to FIGS. 2 and 5 in accordance with the steps 0) to e) of an alternative embodiment of the method according to the invention with the filling level as a whole,
- FIG. 10 is a side sectional view of another embodiment of the filling assembly with a valve in the sealing element and a single-acting ring seal on the front side of the filling valve to prevent backflow from the annular gap during pressure filling,
- FIG. 11 shows schematic side sectional views of a filling arrangement according to FIG. 1 as in FIG. 8, with a filling valve with a conically tapered centering section at the filling tip
- FIG. 12 is a side sectional view of another embodiment of the filling assembly with a filling valve with exchangeable filling tip and concentric spacer
- FIG. 13 is a schematic longitudinal sectional view of a filling valve according to the invention with a spiral web-like flow guiding structure in the filling tube,
- FIG. 14 is a schematic longitudinal sectional view of a filling valve according to the invention with a helical web-like flow guiding structure on the piston,
- FIG. 15 shows a schematic cross-sectional view of a filling valve according to the invention with a flow guiding structure of guide vanes on the piston
- FIG. 16 shows a schematic cross-sectional view of a filling valve according to the invention with a flow guiding structure comprising moving blades on the rotating piston.
- the invention relates to the filling of cylindrical containers - such as cans - by means of a special filling arrangement. It is exploited that cans, in addition to bottles and boxes represent the most important packaging for drinks, especially for carbonated drinks such as beer or soft drinks, have a highly accurate cylindrical shape with a coaxial filling, which is only slightly smaller than the container diameter.
- the most common dose volumes in Europe are 0.33 l and 0.5 l, but there are also doses with a volume of 0.15 l, 0.2 l and 0.25 l and of 1 l and 5 l. However, according to the invention Also containers with other volumes are filled, as long as the container volume is known.
- Fig. 1 shows a simplest embodiment of the method and a suitable filling arrangement, which consists of the filling valve 1 and the container 2.
- This is a can, whose substantially cylindrical shape is slightly tapered at the upper end to the coaxial filling opening 21.
- the taper serves primarily for receiving the cover, not shown here, which is placed after the filling process and connected by (multiple) flanging with the edge of the can.
- the inventive method uses this difference between the container (inside) diameter düi and the diameter düo the container opening 21st As shown in the example of FIG. 1, the diameter .alpha. Of the container opening 21 can be between 70 and 99.5%, usually between 80 and 90% of the container internal diameter. be.
- the movable filling valve 1 which consists in the simplest embodiment of filling tube 1 1 and controllably guided piston 10, has an outer diameter dF a , which is adapted to the diameter düo the container opening 21 so that the filling valve 1, although contact and friction can also be introduced as free of play through the container opening 21 in the container 2.
- the method which is schematically illustrated also in Fig. 8, provides that the container 2 is arranged (in step 0) with respect to the filling valve 1 that a coaxial centric insertion of the filling valve 1 through the container opening 21 in the Container 2 is made possible - this can be done by axially moving the filling valve or the container, for example via a correspondingly movable container receptacle (not shown).
- the container volume V D is filled with ambient air (but possibly also with another gas) at an outlet pressure po (eg ambient pressure).
- step aO) in Fig. 8 the block arrow indicates that the filling valve 1 is inserted into the container 2, whereby the pressure p in the container rises when the container opening 21 is sealed. But even without sealing, there may be a (temporary) pressure increase when the air can escape only slowly through the filling opening 21 to the filling valve 1.
- Step a) shows in Fig. 1 and Fig. 8, the fully inserted into the container 2 filling valve. 1
- the filling tip of the filling valve 1 having the volume VF which has penetrated into the container 2 leads either to an increase in pressure in the remaining gap volume AV when the filling opening 21 is sealed, or to a displacement of a large part of the gas volume from the container, so that the gap volume AV (difference between tank volume VD and introduced Guventilvolumen VF) existing gas or air and thus oxygen quantity is significantly reduced.
- the container 2 has a shaped bottom 22.
- the filling valve 1 can be completely retracted without deforming the bottom 22 is the filling tube 11 at the front end, which has the sealing seat 13 for the piston 10, shaped according to the shape of the bottom 22.
- step b) the valve 1 is brought into an open position by transferring the piston 10, so that fluid flows into the container 2, while at the same time the opened filling valve 1 is moved upwards.
- step b) is shown in two representations, once by the block arrow, the opening of the filling valve 1 is shown, which is only slightly lifted from the container bottom - or channels in the end face - so that fluid can penetrate into the gap volume AV .
- the block arrow indicates the upward movement of the open filling valve 1, wherein the speed of the upward movement is matched with the inflow velocity of the fluid, so that the end face of the valve 1 with the valve opening is always below the fluid level in the gap volume AV.
- the contact surface of the fluid in the gap volume AV is only a circular ring with the ring width s (difference of the half-tank inside diameter döi and the half Medventilau built messrs dFa).
- the fluid level in the gap volume AV lies above the end face of the filling valve 1
- the fluid only comes into contact with the gas present in the container 2 at the annular contact surface.
- the circular ring of the ring width s represents an extremely small contact surface, whereby the absorption of gas (in particular atmospheric oxygen) in the fluid is very low.
- the lower-layer filling process is continued by upward movement of the filling tube 1 1 with the piston 10 in the open position, with hardly any turbulence and thus the gas input via the contact surface is further reduced.
- the reduced contact area leads to a significantly reduced oxygen uptake in the fluid with the reduced air volume and the lower-layer filling process.
- Step c), shown in Fig. 1, shows the opened filling valve 1 at a height of the container opening 21, to which the upward movement of the filling valve 1 is tuned within the container 2 with respect to the filling or the filling rate or the filling speed.
- a predetermined control parameter is used, which takes into account the predetermined filling volume in the container 2. Since cans are very accurately manufactured with respect to their volume, the predetermined filling volume corresponds to the nominal volume.
- the control parameter in step c) may be a pre-set fill time resulting from a predetermined fill volume in the container 2 and a set filling volume flow of the filling device results.
- no complex sensor technology is thus required.
- step d the closing of the filling valve 1 takes place in a step d), as by the Block arrow is indicated in the corresponding representation in Fig. 8, wherein the predetermined filling volume is reached in the container 2.
- step e the closed filling valve 1 is withdrawn, so that a next container 2 can be subjected to the filling process.
- FIG 11 shows a filling valve 1 with a conically tapered centering section 9 at the filling tip, through which the coaxially centered insertion of the filling valve 1 through the container opening 21 into the container 2 is supported.
- FIGS. 2 to 5 and FIGS. 9, 10 show method steps with a preferred filling arrangement, in which the filling valve 1 additionally has a separating tube 12, which is arranged directly and coaxially around the filling tube 11 and can be moved independently thereof.
- Fig. 2 shows the filling assembly without seal and Fig. 5 with seal.
- the method steps shown are applicable for both variants.
- the method which is carried out with the separating tube filling device 12 is also distinguished by the reduced contact surface, a reduced volume of air and the lower-layer filling process, which lead to a significantly reduced absorption of oxygen in the fluid.
- step a the filling valve 1 is completely inserted through the container opening 21 into the container 2.
- the gap volume ⁇ V which is formed between the container wall 20 and the separator tube 12
- the piston 10 has been transferred to an open position of the filling valve 1.
- the filling method which utilizes a filling valve 1 with a separating tube 12, can be carried out without sealing the container opening 21, as shown in FIG. 2, so that gas or air can escape.
- a pressure filling operation can be carried out in which the container opening 21 is sealed around the filling valve 1, as shown in Fig. 3, 4, 5 and 10.
- step bO the piston 10 is transferred to an open position of the filling valve 1 and the fluid is allowed to flow through the axial gap A into the radial gap volume AV between the container wall 20 and the separating tube 12.
- the fluid flows into the radial gap volume AV until a pressure equalization exists between the filling pressure preset in the filling device and the container pressure p, whereby the filling level h in the radial gap volume AV is determined.
- the tank pressure p may be predetermined and depends on whether the tank opening is sealed or not, and whether there is a check or spill valve.
- the fluid level in the gap volume AV in the container 2 does not increase when the filling valve 1 is open, when a pressure equalization between pressure in the container 2 and filling pressure is reached.
- a pumping step is preferably carried out (if appropriate, however, several of the pumping steps described below can also be carried out).
- step b1 During the subsequent upward movement of the filling tube 11 with the piston 10 in the open position within the separating tube 12, as indicated in step b1) by the block arrow above the piston, the separating tube 12 is left in its fully inserted position, so that the separating tube 12 filled with fluid.
- step b2) the upward movement of the filling tube 1 1 is terminated with the piston 10 in the open position at a predetermined height Hi and the piston 10 is transferred to the closed position.
- This height Hi is predetermined as a function of the filling height h in the radial gap volume AV, which coincides with the The height Hi can be calculated from the volume bounded in the separating tube 12 by the filling tube 11 at the height Hi and the volume difference of the gap volume AV between the maximum filling height h m ax and the achievable filling height h should correspond.
- step a1) (Fig. 5 and 9) by completely inserting the filling tube 1 1 with the piston 10 in the closed position from the separation tube 12 through the axial Gap A is pressed into the radial gap volume AV.
- the fluid level rises there accordingly - preferably up to the maximum level, the remaining existing gas is completely displaced from the container. If the complete filling of the gap volume AV can not be achieved with one pumping step, then the sequence of steps b0) -b1) -b2) -a1) -b0) must be repeated, if necessary, until a step a1) completely completes the gap volume AV a portion of the container opening 21 is filled.
- step c1) sketched in FIG. 9 the filling tube 11 is then moved upwards with the piston in the open position within the separating tube 12 into a region of the container opening 21, the fluid filling the entire separating tube volume.
- the upward movement (s) of the filling valve 1 within the container 2 to the container opening 21 er. follows here also timed, since all volumes (filling volume, gap volume, differential volume, volume in the separation tube, etc.) are predetermined or predeterminable.
- step d1) when the filling tube 1 1 has reached the predetermined height H in the region of the container opening 21, the piston 10 is transferred to the closed position and the separating tube 12 is withdrawn, the fluid column previously in the separating tube 12 up to the valve being in the Container 2 remains, which is thus completely filled, so that the filling valve 1 in step e) is withdrawn.
- FIG. 3 shows a method step aO) during the introduction of the filling valve 1 into the container 2 at a time at which the seal 14 is placed.
- the seal 14 can also be placed on the container 2 prior to insertion of the filling valve 1, wherein a maximum pressure of the container volume Vo and the volume V F of the fully inserted portion of the filling valve 1 after the complete insertion the filling valve 1 is achieved by compression of the amount of gas present in the container volume V D.
- a spandr pressure of 3 bar can be set when a filling pressure of 2 bar is provided.
- a circumferential, single-acting annular seal 18 such as a sealing lip, is used, which prevents fluid or Gas from the gap volume AV flows back into the separation pipe 12.
- Outflow of fluid through the axial gap A is permitted, and may be accomplished, in particular, by one or more of the pumping steps described above.
- volume compensator attachment 15 which is sealingly inserted between the container opening 21 and the sealing element 14 when the container opening 21 is sealed around the filling valve 1.
- the volume compensator attachment 15 is preferably used in one embodiment of the method, which additionally has an elastically expandable body, and which will be described in detail later in connection with FIG. 7.
- a pressure relief valve 16 can be arranged in the sealing element 14 (see FIGS. 5 and 6) or in the volume compensator attachment 15 (see FIG shown in a gas discharge 16 'can, but does not have to.
- the overpressure valve 16 in the "repressing" in step a1), the fluid volume which is present after step b2) up to the predetermined height Hi in the separating tube 12, by completely inserting the filling tube 1 1 with the piston 10 in the closed position of the Separating pipe 12 is pressed by the axial gap A in the radial gap volume ⁇ , prevents the pressure p in the container 2 exceeds the predetermined maximum pressure. In addition, by keeping constant the pressure in the container 2 an increased gas input is avoided, as he would otherwise take place with increasing pressure.
- FIG. 6 shows in eight illustrations an embodiment of the method which uses an alternative filling valve 1 with a combined separating / filling tube 12.
- the separating filling tube 112 has a larger inner diameter dn with the same outer diameter dFa, which is adapted to the diameter doo of the container opening 21, and consequently significantly thinner than the filling tube 11 Fig. 1 is. Consequently, the associated controlled guided piston 100 has a correspondingly larger diameter dx, which is adapted to the inner diameter dFi of the separating-Füllrohrs 12.
- the piston 100 in the separation fill tube 112 is a significantly increased stroke of the piston 100 in the separation fill tube 112:
- the thick piston 100 in the separating filling tube 1 12 can be moved to a second open position in which the piston 100 distally, d. H. removed, is arranged to the sealing seat 13 of the separating filling tube 12.
- the piston 100 defines a displacement volume Vv within the separation filling tube 1 12, which results in the predetermined filling volume of the container 2 with the gap volume AV.
- the filling valve 1 is completely inserted into the container 2 in step a) until the end face of the filling valve 1 contacts the container bottom 22.
- the illustrated variant shows a pressure filling, wherein the container opening 21 is sealed around the filling valve 1. The adjustment of the pressure is done as described above. The process can also be carried out without sealing.
- step bO the filling valve 1 is opened by moving the piston 00 into the first opened position of the filling valve 1 so that fluid can flow into the radial gap volume AV between the container wall 20 and the separation fill tube 112.
- step b1.1 an upward movement of the separating filling tube 1 12 is carried out with the piston 100 in the open position, wherein also achieves a lower-layer filling is, by the fluid level (not shown) in the gap volume ⁇ ⁇ / during the filling process in the upward movement above the end face of the filling valve 1 is located.
- step b2) at a predetermined height Hi, the upward movement of the separating filling tube 112 with the piston 100 in the first open position is stopped and the piston 100 is transferred to the closed position.
- step a1) by re-complete insertion of the separation-filling tube 1 12 with the piston 100 in the closed position, a repressing or pumping step, with the level of the fluid level in the gap volume ⁇ V is raised, the pressure in Container 2 remains constant due to the pressure relief valve 16.
- step bO) is repeated - whether steps b1.1), b2) and a1) are repeated depends on the geometric conditions and the predetermined height Hi - before in step c1) the separation-filling tube 1 12 is transferred to a position in which, like the separation tube 12, an axial gap A remains between the lower end of the separation fill tube 12 and the container bottom 22 before the piston 00 is moved to its second open position, with the separation fill tube 112 filling with fluid ,
- the position of the piston 100 in the second open position is selected so that the displacement volume V v within the separation fill tube 1 12 completes the gap volume AV to the predetermined fill volume, so that in step d1) the separation fill tube 112 to the predetermined height H in Area of the container opening 21 is retracted until the piston 100 comes into the closed position, so that the fluid from the separation-filling tube 12 passes into the container 2, and this is completely filled.
- step e not shown, in which the filling valve 1 is withdrawn.
- This method also uses the known geometric parameters and can be performed time-
- FIG. 7 A further exemplary embodiment of the method according to the invention with a filling arrangement likewise according to the invention is shown in FIG. 7.
- a filling valve 1 with a separating tube 2 is used, which is surrounded by an elastically expandable body 17, which extends along the entire in the container 2 (including volumenkompensa- toraufsatz 15 in this embodiment) introduced portion of the separating tube 12.
- an elastically expandable body 17 which extends along the entire in the container 2 (including volumenkompensa- toraufsatz 15 in this embodiment) introduced portion of the separating tube 12.
- a plurality of elastically expandable bodies may be arranged circumferentially and / or axially distributed around and on the filling valve 1.
- an arrangement of an elastically expandable body on one of the filling valves described without separation tube 1 conceivable.
- the elastically expandable body extends correspondingly only along the entire section of the separation tube 12 introduced into the container 2.
- the type, number and arrangement of the elastically expandable body or body depends on whether it has been removed in step a ) the closed filling valve 1 has been completely inserted into the container 2 sealed thereby, in step a1) is allowed to expand, so that in step a2) on the inner surfaces of the container 2 and, as in the example shown, on the inner surface of the Volumenkompensatoraufsatzes 15 comes to the plant while almost completely in the container 2 previously present ambient air (or another gas) by the present in the volume compensator 15 pressure relief valve 16 suppressed.
- the expansion of the elastically expandable body 17 can be effected by supplying an expansion fluid, which may be a gas, but it is also conceivable that after completely filling the filling valve 1, whereby gas has been displaced from the container, the filling tube 11 with the Piston 10 is moved upward in the closed position, whereby in the container 2, a negative pressure is created, which leads to the expansion of the elastically expandable body 17.
- an expansion fluid which may be a gas
- the filling tube 11 with the Piston 10 is moved upward in the closed position, whereby in the container 2, a negative pressure is created, which leads to the expansion of the elastically expandable body 17.
- the latter is only possible for containers with sufficient external pressure resistance; Although usually beverage cans have a high internal pressure resistance, but the external pressure resistance unfilled cans is not very high - empty cans can be relatively easily compressed. Consequently, expansion by supplying an expansion fluid may be preferred.
- step b1 b first the transfer of the piston 10 into the open position of the filling valve 1, so that fluid flows into the radial gap volume AV between the container wall 20 and the filling valve 1, whereby the elastically expandable body 17 in step b1 a) compressed is until it rests against the separation tube 12 again (step b1 b).
- step b2) (not shown) an upward movement of the filling tube 11 with the piston 10 in the open position up to a predetermined height H in a region of the container opening 21, wherein the separation tube 12 in the fully retracted position, in which the axial gap A remains, so that the separation tube 12 fills with fluid.
- the filling valve 1 is closed in step d1), if in step b2) the predetermined height H in the region of the container opening 21 is reached.
- step d2) the retraction of the separation tube 12 follows, which advantageously simultaneously opens the seal 14, which is connected to the separation tube 12. So- then the closed filling valve 1 is withdrawn from the completely filled container 2 in step e), not shown.
- the volume compensator top 15 also shown in Figure 4, provides with the annular gap 15 'formed between the inner wall of the volume compensator top 15 and the separator tube 12, a volume corresponding to a displaced volume passing through the part of the filler valve 1, which is present when closing the filling valve 1 in step d1) within the container 2, which is in the present case the separating tube 12.
- the fluid which has flowed in steps b) and c) when filling the container 2 first of the gap volume AV into the annular gap 15 'of the volume compensator attachment 15, when opening the seal 14 by the return process of the separation tube 12 in Step d2) run into the container 2, so that in the container 2, the predetermined filling volume is present.
- volume compensator attachment 15 wherein here also a sealing element 14 'is illustrated with which the volume compensator attachment 15 is sealed at the container opening 21 of the container 2.
- the embodiments with volume compensator attachment 15 described above may also be sealed to the container opening 21 with a suitable sealing element.
- the filling valve 1 has a radial spacer device 6, which in the example shown consists of a ring fastened to the piston, from which radial spacer sections extend. Due to the sectional illustration, only one of these spacer sections can be seen in FIG. 12, which are arranged symmetrically about the central axis defined by the piston 10.
- the spacer portions of the spacer device 6 are formed so that they can slide on the inside of the filling tube 1 when the piston 10 is moved to open and close the valve 1 up and down.
- a spacer device 6 have three symmetrically arranged at an angle of 120 ° to each other radial spacer sections, as this centering is ensured while the flow cross-section in the filling tube 1 1 is only slightly reduced. But it can also be provided more than three symmetrical to each other arranged radial spacer sections.
- a radial spacer device can also be arranged on the inside of the filling tube, wherein the spacer sections abut the piston 10 in a sliding manner.
- a fill valve may have a replaceable tip without having a tapered centering portion or radial spacers, and without the fill assembly comprising a sealed volume compensator cup. etc.
- these elements are not limited to a simple filling valve, but may also be present on filling arrangements with separating tube, combined filling-separating tube and with expandable body. The same applies to the embodiments of the filling valve with Strömungsleit Geneva described below.
- the filling valve 1 has a flow guide 9, which the outflowing fluid in a defined vortex or vortex movement offset. This avoids that the leaking fluid pressure radially collides with the container wall and back spills, which increasingly gas bubbles are included, which would accumulate until the end of the filling process and then lead to a strong foaming.
- the flow-guiding structure can be present on an inner side of the filling tube 11, as in the examples of FIGS. 14 to 16 on an outer side of the piston 10 above the respective sealing surfaces 11 ', 13. Contrary to what is shown, co-operating flow guiding structures may also be present on both the filling tube and the piston, just as the filling valve may be an outwardly or downwardly opening filling valve.
- FIGS. 13 and 14 each show in the filling tube 1 1 and on the piston 10 a flow guiding structure 9, which is formed by a spiral web similar to a thread. It can also be provided a plurality of parallel spiral webs.
- FIGS. 15 and 16 show a blading as Strömungsleit Scheme on the outside of the piston 10. Unlike shown, a blading can also be present on the inside of the filling tube.
- the flow-guiding blading 9 on the piston 10 in Fig. 15 is formed by a ring of vanes, which are curved at least in two planes to enable the fluid flowing past in a vortex or vortex movement.
- Fig. 16 shows an example in which the flow-guiding blading 9 is formed by a ring of blades, which are unbent here.
- the piston 10 is rotatably drivable, as indicated by the block arrow.
- the piston 10 When the blades are curved, it is sufficient for the piston 10 to be rotatably supported, as the fluid flowing past the blades causes the piston 10 to rotate, thereby promoting spin without drive.
- a flow-guiding structure can simultaneously be formed as a radial spacer device, or the radial spacer sections can be designed as a flow-guiding structure, that is to say as a shovel-shaped one.
- the opening direction of the filling valve is always shown connected to a movement of the piston inwardly or upwardly, the sealing seat on the piston facing down and the sealing seat on the filling tube upwards.
- filling valves which open in the reverse direction, ie, in which the piston is moved to open down, for which the piston tip usually a plate-like spread end portion has to provide an upwardly facing sealing seat, which can come to rest on a corresponding downwardly facing sealing seat of the filling tube.
- the filling quantity is determined by the known geometries (volume) of the container (can) and the filling valve, which also represents a displacement element.
- volume volume
- the filling valve various designs are conceivable.
- An inventive filling valve (with or without separator tube, expansion body ...) is matched with its outer diameter to the diameter of the container to be filled, which has only a small difference to the container diameter.
- expensive measuring devices such as MID sensors omitted.
- actuator and appropriate control logic can be dispensed with.
- the size of the annular surface between the container wall and filling valve is dependent on the container diameter and container opening diameter and therefore can also be very small - there is the contact surface reduction, which has a reduced gas absorption in the bottled fluid result.
- the ambient air present in the container is flushed by carbon dioxide, which causes a very high carbon dioxide consumption
- the amount of oxygen according to the invention already by the mechanical displacement the air from the container due to the geometric conditions significantly reduced even in embodiments without expandable body. Due to the lower-layer filling process around the separating or filling tube, less or no turbulence of filled fluid and residual gas in the container is produced, as a result of which oxygen uptake is further minimized.
- the pressure required for pressure filling (back pressure, saturation pressure, filling pressure), which is generated in the prior art by compressed gas, usually carbon dioxide or nitrogen, mechanically provided by sealing the filling opening during insertion of the filling valve, so that clamping gas and corresponding Devices for feeding can be omitted.
- the desired pressure is simply adjustable by determining the required insertion depth given geometric conditions.
- a vom Kunststoffrohrlose pressure filling is possible, whereby the separate control, cleaning and maintenance of the return air pipes or return air lines is eliminated, which is still required in the prior art:
- the one-chamber principle is usually applied to the filling.
- the container to be filled and a reservoir on the filling device (ring bowl) form a chamber during the actual filling process.
- the liquid flowing into the container to be filled displaces the gas present there into the storage container.
- multi-chamber solutions but so far have not prevailed, since the individual chambers can only be properly separated if a Gregut lymph is accepted.
- a true separation of the chambers is only complicated in terms of apparatus with a balloon element or impermeable membrane.
- the filling device used can be very simple design and hardly prone to error. But even if the invention preferably makes do without rinsing and clamping gas, the implementation of such steps in the inventive method is not excluded.
- known sizes that do not change before, during and after the filling process are used. The decisive factor is that these quantities can not be changed or regulated. The ambient pressure, the can volume and the displacement volume of the filling valve remain and can not be regulated. These quantities are determined at any time (measured or calculated) and used at another time for pressure and (filling) volume determination during the filling process.
- a target pressure and / or a target volume are set by relative movement of the individual parts (filling valve, gasket, separator pipe, etc.) along an axis with respect to the container leaves.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Filling Of Jars Or Cans And Processes For Cleaning And Sealing Jars (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP17000013.7A EP3345862B1 (de) | 2017-01-05 | 2017-01-05 | Füllanordnung und verfahren zum befüllen von zylindrischen behältern |
| PCT/EP2017/001433 WO2018127268A1 (de) | 2017-01-05 | 2017-12-20 | Verfahren zur befüllen von zylindrischen behälten behältern, insbesondere dosen und füllanordnung aus füllvorrichtung und behälter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3565780A1 true EP3565780A1 (de) | 2019-11-13 |
Family
ID=57758472
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP17000013.7A Active EP3345862B1 (de) | 2017-01-05 | 2017-01-05 | Füllanordnung und verfahren zum befüllen von zylindrischen behältern |
| EP17002044.0A Active EP3345863B1 (de) | 2017-01-05 | 2017-12-20 | Füllanordnung und verfahren zum befüllen von dosen |
| EP17842415.6A Withdrawn EP3565780A1 (de) | 2017-01-05 | 2017-12-20 | Verfahren zur befüllen von zylindrischen behälten behältern, insbesondere dosen und füllanordnung aus füllvorrichtung und behälter |
Family Applications Before (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP17000013.7A Active EP3345862B1 (de) | 2017-01-05 | 2017-01-05 | Füllanordnung und verfahren zum befüllen von zylindrischen behältern |
| EP17002044.0A Active EP3345863B1 (de) | 2017-01-05 | 2017-12-20 | Füllanordnung und verfahren zum befüllen von dosen |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US10894704B2 (de) |
| EP (3) | EP3345862B1 (de) |
| CN (1) | CN110167869B (de) |
| ES (1) | ES2786560T3 (de) |
| HU (1) | HUE049288T2 (de) |
| PL (1) | PL3345862T3 (de) |
| WO (1) | WO2018127268A1 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US12263570B2 (en) | 2022-06-06 | 2025-04-01 | Enerpac Tool Group Corp. | Hydraulic tools |
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| DE1186768B (de) | 1963-08-13 | 1965-02-04 | Jagenberg Werke Ag | Verfahren und Vorrichtung zum Abfuellen von Fluessigkeiten |
| BE770848A (fr) * | 1970-08-29 | 1971-12-16 | Holstein & Kappert Maschine Fa | Procede et dispositif pour le soutirage d'un liquide dans un recipient |
| US3830265A (en) * | 1972-08-14 | 1974-08-20 | American Can Co | Method and apparatus for filling a container |
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| US4121633A (en) * | 1976-10-18 | 1978-10-24 | Jerry Diez | Transfer device for heat sensitive material |
| DE3102678A1 (de) * | 1981-01-28 | 1982-09-02 | Holstein Und Kappert Gmbh, 4600 Dortmund | Verfahren zum abfuellen von sauerstoffempfindlichen fluessigkeiten |
| US4750533A (en) * | 1981-11-27 | 1988-06-14 | Crown Cork & Seal Company, Inc. | Filling valve for counterpressure filling of cans |
| US4986318A (en) * | 1981-11-27 | 1991-01-22 | Crown Cork & Seal Company, Inc. | Filling valve for counterpressure filling of cans |
| SE431186B (sv) * | 1982-08-17 | 1984-01-23 | Tetra Pak Int | Fyllare vid forpackningsmaskiner |
| DE3444515A1 (de) * | 1984-12-06 | 1986-06-19 | Hans Dipl.-Chem. 8953 Obergünzburg Gabler | Verfahren zum fuellen von steifen behaeltnissen |
| US5145008A (en) * | 1985-04-05 | 1992-09-08 | Crown Cork & Seal Company, Inc. | Filling valve for counterpressure filling of cans |
| US4915146A (en) * | 1988-03-14 | 1990-04-10 | John R. Nalbach Engineering Co., Inc. | Measuring flask for use in a filling machine |
| JPH0431293A (ja) * | 1990-05-15 | 1992-02-03 | Mitsubishi Heavy Ind Ltd | 高速液体充填装置 |
| ZA915594B (en) | 1990-08-13 | 1993-03-31 | Colgate Palmolive Co | Package filling method and apparatus |
| DE9416912U1 (de) * | 1994-10-20 | 1995-11-16 | Krones Ag Hermann Kronseder Maschinenfabrik, 93073 Neutraubling | Füllorgan für Gefäßfüllmaschinen |
| IT1293960B1 (it) * | 1997-06-20 | 1999-03-11 | Mbf Spa | Macchina riempitrice rotativa per il riempimento di contenitori con liquidi |
| SE9801399D0 (sv) | 1998-04-21 | 1998-04-21 | Astra Pharma Prod | Method and apparatus for filling containers |
| JP2009502665A (ja) * | 2005-07-28 | 2009-01-29 | シデル | 液体室、気体室、及び中間室を備えた充填バルブ、及び充填バルブを備えた充填機 |
| DE102006051237B4 (de) * | 2006-10-31 | 2015-09-10 | Khs Gmbh | Spülgaseinbringung in Getränkedosen |
| DE102008030948A1 (de) | 2008-07-02 | 2010-01-21 | Khs Ag | Füllsystem zum Füllen von Flaschen oder dergleichen Behältern sowie Füllmaschine |
| DE102010022875A1 (de) * | 2010-06-07 | 2011-12-08 | Khs Gmbh | Füllelement sowie Füllmaschine zum Füllen von Flaschen oder dergleichen Behältern |
| DE102011100560B3 (de) | 2011-05-05 | 2012-03-15 | Leibinger Smb Technik Gmbh | Vorrichtung zum Befüllen eines Behältnisses mit einer zum Verzehr bestimmten Flüssigkeit |
| DE102011103876B3 (de) * | 2011-06-10 | 2012-03-15 | Leibinger Smb Technik Gmbh | Vorrichtung zum Befüllen eines Behältnisses mit einer insbesondere zum Verzehr bestimmten Flüssigkeit |
| US9783402B2 (en) * | 2013-06-11 | 2017-10-10 | Leibinger Gmbh | Valve attachment, filling device, filling assembly, and method for filling a container with liquid and draining said container of liquid |
| DE102013113070B3 (de) | 2013-11-26 | 2015-03-19 | Khs Gmbh | Füllelement sowie Füllmaschine |
| DE102014102953A1 (de) * | 2014-03-06 | 2015-09-10 | Krones Ag | Vorrichtung und Verfahren zum Befüllen eines Behälters mit einem Füllprodukt |
| DE102014106404A1 (de) * | 2014-05-07 | 2015-11-12 | Khs Gmbh | Füllvorrichtung |
| CN204022440U (zh) * | 2014-08-28 | 2014-12-17 | 宁波德永机械有限公司 | 一种易拉罐灌装阀 |
| DE102014014317B4 (de) * | 2014-10-01 | 2018-06-07 | Leibinger Gmbh | Vorrichtung und Verfahren zum messmittellosen Befüllen eines Behältnisses |
| DE202014104841U1 (de) * | 2014-10-10 | 2014-10-27 | Krones Ag | Vorrichtung zum Befüllen eines Behälters mit einem Füllprodukt |
-
2017
- 2017-01-05 PL PL17000013T patent/PL3345862T3/pl unknown
- 2017-01-05 HU HUE17000013A patent/HUE049288T2/hu unknown
- 2017-01-05 EP EP17000013.7A patent/EP3345862B1/de active Active
- 2017-01-05 ES ES17000013T patent/ES2786560T3/es active Active
- 2017-12-20 WO PCT/EP2017/001433 patent/WO2018127268A1/de not_active Ceased
- 2017-12-20 US US16/468,065 patent/US10894704B2/en active Active
- 2017-12-20 EP EP17002044.0A patent/EP3345863B1/de active Active
- 2017-12-20 EP EP17842415.6A patent/EP3565780A1/de not_active Withdrawn
- 2017-12-20 CN CN201780082572.0A patent/CN110167869B/zh active Active
Also Published As
| Publication number | Publication date |
|---|---|
| EP3345863A2 (de) | 2018-07-11 |
| EP3345863A3 (de) | 2019-06-12 |
| EP3345862B1 (de) | 2020-03-04 |
| CN110167869B (zh) | 2021-09-03 |
| EP3345863C0 (de) | 2023-06-21 |
| HUE049288T2 (hu) | 2020-09-28 |
| US20200017343A1 (en) | 2020-01-16 |
| EP3345862A1 (de) | 2018-07-11 |
| PL3345862T3 (pl) | 2020-08-24 |
| WO2018127268A1 (de) | 2018-07-12 |
| US10894704B2 (en) | 2021-01-19 |
| EP3345863B1 (de) | 2023-06-21 |
| ES2786560T3 (es) | 2020-10-13 |
| CN110167869A (zh) | 2019-08-23 |
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