EP1625093A1 - Procede de vidange d'un conteneur souple renfermant un produit visqueux - Google Patents
Procede de vidange d'un conteneur souple renfermant un produit visqueuxInfo
- Publication number
- EP1625093A1 EP1625093A1 EP04707566A EP04707566A EP1625093A1 EP 1625093 A1 EP1625093 A1 EP 1625093A1 EP 04707566 A EP04707566 A EP 04707566A EP 04707566 A EP04707566 A EP 04707566A EP 1625093 A1 EP1625093 A1 EP 1625093A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- flexible container
- container
- tank
- viscous product
- emptying
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
- B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
- B67D7/00—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes
- B67D7/02—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes for transferring liquids other than fuel or lubricants
- B67D7/0216—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes for transferring liquids other than fuel or lubricants by squeezing collapsible or flexible storage containers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
- B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
- B67D7/00—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes
- B67D7/02—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes for transferring liquids other than fuel or lubricants
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
- B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
- B67D7/00—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes
- B67D7/02—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes for transferring liquids other than fuel or lubricants
- B67D7/0227—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes for transferring liquids other than fuel or lubricants by an ejection plunger
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
- B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
- B67D7/00—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes
- B67D7/02—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes for transferring liquids other than fuel or lubricants
- B67D7/0238—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes for transferring liquids other than fuel or lubricants utilising compressed air or other gas acting directly or indirectly on liquids in storage containers
- B67D7/0244—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes for transferring liquids other than fuel or lubricants utilising compressed air or other gas acting directly or indirectly on liquids in storage containers by using elastic expandable bags
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
- B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
- B67D7/00—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes
- B67D7/02—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes for transferring liquids other than fuel or lubricants
- B67D7/0238—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes for transferring liquids other than fuel or lubricants utilising compressed air or other gas acting directly or indirectly on liquids in storage containers
- B67D7/0255—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes for transferring liquids other than fuel or lubricants utilising compressed air or other gas acting directly or indirectly on liquids in storage containers squeezing collapsible or flexible storage containers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
- B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
- B67D7/00—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes
- B67D7/06—Details or accessories
- B67D7/58—Arrangements of pumps
- B67D7/62—Arrangements of pumps power operated
- B67D7/64—Arrangements of pumps power operated of piston type
- B67D7/645—Barrel pumps
Definitions
- the present invention relates to a process for continuous or discontinuous emptying of viscous products contained in a flexible container, in particular of the "big bag” type, this emptying taking place through an opening provided in the lower part of the flexible container.
- the invention also relates to a drain kit, including in particular a device for draining viscous products contained in flexible containers.
- the viscous products in question in the context of the invention are more particularly products whose viscosity is at least 10 Pa.s and, preferably between 10 Pa.s and 200,000 Pa.s, this viscosity being measured in a manner known per se at 25 ° C and under a shear gradient of 0.01. s "1 ,
- silicone oils silicone gums, polyorganosiloxane compositions (optionally in the form of aqueous emulsions) crosslinkable into elastomers by polyaddition, polycondensation or dehydrogeno- (poly) condensation reactions, organic polymers comprising reactive organosilicon groups (called MS polymers) and charged compositions, in solvent or aqueous medium, comprising a
- acrylic polymer and crosslinkable to elastomers by drying may in particular be silicone sealants but also other viscous polymer products such as polyurethanes or viscous inks.
- Such viscous products can be stored in bulk in flexible containers of the "big bag” type, before being spilled or injected into other containers or before being packaged in other packaging.
- patent application DE-A-34 29 167 describes a method and a device for emptying flexible containers for particulate products. in bulk.
- the flexible container of the "big bag” type is of
- This vibration emptying device does not appear to be suitable for viscous products contained in flexible bags.
- Techniques are also known for emptying rigid barrels of viscous products using a barrel press comprising a pressure plate intended to penetrate and move in a barrel, to expel the viscous product contained in a bag under pressure. made of thin plastic, for example polyethylene.
- drain tubes containing a viscous silicone product using a device formed by a tube intended to receive the tube and in which a piston for pressurizing the viscous product can move, thus allowing its expulsion out of the tube.
- the distant technological background also includes container emptying systems consisting of a rigid cardboard box containing a thin polyethylene bag loaded with viscous products.
- the emptying of this type of container takes place using a presser plate capable of expelling the viscous product out of the polyethylene bag, said viscous product then being taken up by pumps provided for this purpose, to be conveyed to downstream elements.
- one of the essential objectives of the present invention is to provide a process for emptying flexible containers for viscous products, which process must be easy to implement and economical.
- Another essential objective of the invention is to provide a process for emptying flexible containers for viscous products and whose capacity is greater than or equal to 250 liters.
- Another essential objective of the present invention is to provide a process for emptying flexible containers for viscous products, which is simple, economical, which causes little loss of material, for example less than or equal to 1.5%, or even 0 , 8%, and which requires very little or no cleaning of the equipment used.
- Another essential objective of the present invention is to provide a need for emptying flexible containers, of the "big bag” type, for viscous products which is of simple and economical structure, which allows the emptying of flexible bags of capacity greater than or equal to 250 liters which is easy to use, which generates very little material loss (less than or equal to 1.5%) and which requires little or no cleaning.
- Another essential objective of the invention is to provide a kit for emptying flexible containers for viscous products, in which the flexible container optimally meets the industrial requirements of transport and logistics.
- the viscous product is chosen from the group of products whose viscosity is at least 10 Pa.s and, preferably between 10 Pa.s and 200,000 Pa.s, namely silicone oils, silicone gums, polyorganosiloxane compositions (optionally in the form of aqueous emulsions) crosslinkable into elastomers by polyaddition, polycondensation or dehydrogeno (poly) -condensation reactions, organic polymers comprising reactive organosilicon groups (called MS polymers) and compositions charged, in a solvent or aqueous medium, comprising an acrylic polymer and crosslinkable into elastomers by drying; ⁇ it essentially consists of:
- the characteristic of keeping the container or flexible bag in the at least partially inflated state makes it possible to overcome the problem of blocking the outlet orifice by conventional lining bags, the problem of soiling the material and the problem of loss of material; this latter problem being at least partly resolved by the technique according to the invention which allows crushing in bellows (or “accordion") minimizing the loss of material.
- Another advantage of the process of the invention is that it is possible to use containers whose capacity is greater than 250 liters, for example 1000 liters, which results in significant productivity gains both in terms of filling and emptying of viscous products.
- One of the essential characteristics of the invention is therefore the implementation of a flexible container, for example of the "big bag” type.
- a container the wall of which, in order to be flexible, nevertheless remains mechanically resistant and moreover preferably has sealing properties with respect to the viscous product considered.
- this wall essentially consists:
- At least one sealing element formed (i) by at least one polymer film, preferably in the form of a coating and / or (2i) by at least one waterproof lining bag composed of one or more layers of materials chosen from the group comprising: synthetic polymer films (in particular polyolefins
- This container formed by such a flexible envelope is sufficient packaging in terms of protection of the viscous product. It is a self-contained packaging which can be easily transported, for example by simply being placed on a pallet and attached, or even included in other containers which do not intervene in the emptying process, unlike bags thin polyethylene, which, in known manner, are housed in rigid containers used for both transportation and emptying.
- the flexible envelope container used in the process according to the invention can for example be a canvas bag (eg polypropylene) lined with a thin bag, for example multilayer (polyethylene / aluminum / polyethylene terephthalate) glued and / or sewn to the canvas, said container being optionally and advantageously provided with handles pe ⁇ nettant to suspend and handle it with a hoist or a forklift.
- a canvas bag eg polypropylene
- a thin bag for example multilayer (polyethylene / aluminum / polyethylene terephthalate) glued and / or sewn to the canvas, said container being optionally and advantageously provided with handles pe ⁇ nettant to suspend and handle it with a hoist or a forklift.
- These flexible containers or “big bags” can have large capacities, for example between 500 and 2000 liters.
- the container with a flexible envelope can be disposable, which is a source of savings, in particular in terms of transport and storage. This allows, for example, to avoid complicated supply chain rotations of metal containers
- viscous products concerned by the invention mention may be made of products whose viscosity is of the order of 3000 Pa.s such as silicone sealants.
- the method according to the invention offers a wide range of drainage rates which can be varied as a function of the viscosity of the product in question, the outlet diameter or the value of pressure exerted.
- the container outlet opening (s) are obtained: - by cutting in the wall of the container, - And / or by removing plug (s) or lids fitted to one (or more) orifice (s), the said orifice (s) being able to be provided with drain (s) from the wall of the container, and / or by removing a (de) link (s) fe ⁇ nant of (or) opening (s) already provided (s) on the container.
- a draining device comprising, on the one hand, at least one pressure member comprising at least one piston and, on the other hand, at least a drainage tank intended to receive the flexible container to be emptied or possibly only its lining bag and designed as a female part capable of cooperating and serving as a guide for the piston of the pressing member in movement, in particular in the forward direction corresponding to the pressurization of the flexible container or possibly its only liner bag.
- the emptying tank is designed so that it can be (hermetically) closed o and the piston is able to move under the action of a presser fluid.
- a presser fluid contained in an inflatable cylinder this cylinder being housed between the piston (5.1) and a cover of reversible fe ⁇ neture of the tank (6) and connected to means for supplying a pressurizing fluid which inflates and consequently displaces the piston (5.1), to allow the expulsion of the viscous product (2) from the tank (6).
- a draining device which comprises at least one draining tank intended to receive the flexible container to be emptied or possibly its only lining bag and suitable for being pressurized
- a drain device comprising:
- At least one pressing member comprising at least one set of at least one roller and at least one counter-roller element, preferably at least two substantially parallel rollers which can rotate about their axes respective
- the fluid used in the variant of the first mode and in the second embodiment can be a gas or a liquid. It can be a liquid with a viscosity less than or equal to 50 Pa.s. Water could be perfectly suitable for this purpose.
- the method according to the invention is operational without mechanical recovery of the viscous product from the container, it is entirely conceivable to provide for the force-feeding of mechanical elements (for example: pumps, screws, double screws) with the viscous product expelled in cases where it would be necessary to transport over a long distance or through pipes generating high pressure drops, or even to gain an economic gain.
- mechanical elements for example: pumps, screws, double screws
- the viscous drained product can be conveyed to storage means or packaging means.
- the viscous product expelled from the flexible container feeds at least one packaging unit for said product in an appropriate packaging, at a suitable flow rate greater than or equal to the consumption of the packaging unit.
- the flow rate is advantageously as high as possible, (for example greater than 50 liters per minute for a viscous product of 1000 Pa.s) so as to provide maximum productivity, in the case of feeding a packaging machine, it is desirable to be able to have high instantaneous flow rates (for example, which may be greater than 1 liter per minute).
- the flow rate naturally depends on all the parameters of Poiseuille's law (viscosity, pressure difference, geometry of the outlet pipe) and elements hindering the exit of the viscous product: valves, filters, roughness.
- the packaging unit could in particular be a device for putting in cartridges of viscous products, in particular silicone sealants ("cartridge sealer”), at a flow rate adapted at least to consumption of the packaging.
- the viscous product expelled from the flexible container feeds storage means and / or mechanical means for setting in motion the viscous product capable of increasing its flow, said mechanical means preferably being chosen from the group comprising: pumps, (double) screws.
- the method according to the invention is not limited as to the number of emptying devices and of conditioning, storage or mechanical recovery means arranged downstream.
- the method according to the invention consists in taking advantage of the flexibility of the container containing the viscous product, by applying to the wall of this flexible container, a pressure which is almost entirely transmitted to the viscous product, so that the container is kept in a state at least partially swollen and the viscous product is expelled.
- This expulsion of the viscous product, continuous or discontinuous, is effected by an opening made in the flexible container (for example by cutting, unscrewing a plug, by a drainage chute), or by one or more openings provided in the means or the associated elements downstream of the emptying device.
- the inflated state of the flexible container which results from the pressure exerted on only a part of its surface which can maintain a permanent tension of the wall of the container and thus eliminates the risk of an uncontrolled folding capable of causing blockage of the opening through which the viscous product is discharged.
- the pressure exerted is for example between 1 and 6 bars in the case of direct emptying, while it is adjusted so that the output flow rate of the viscous product is greater than or equal to the consumption of the means of the elements arranged downstream of the device drain.
- depressurization of the flexible container is carried out in accordance with the invention.
- the flexible container is re-routed and the possible remainder of viscous product which it contains towards a storage site.
- This optional operation is fast enough for it to be possible to drain a new viscous product incompatible with the previous one after a period not exceeding ten minutes for example, from the stop of the draining of the product previous until the start of the draining of the next product.
- the method according to the invention involves:
- the present invention relates to a kit for implementing the above-defined method, which kit being characterized in that it comprises: “a viscous product chosen from the group of products whose viscosity is d '' at least 10 Pa.s and, preferably between 10 Pa.s and 200,000 Pa.s,
- ⁇ namely silicone oils, silicone gums, polyorganosiloxane compositions (optionally in the form of aqueous emulsions) crosslinkable into elastomers by polyaddition, polycondensation or dehydrogeno (poly) condensation reactions, organic polymers comprising groups reactive organosilicon compounds (called MS polymers) and charged compositions, in a solvent or aqueous medium, comprising an acrylic polymer and crosslinkable into elastomers by drying; ⁇ a flexible container mechanically resistant and tight to the viscous product, preferably equipped with lifting handles and / or suspension; ⁇ a draining device comprising at least one pressing member and / or at least one pressing fluid; ⁇ optionally at least one package for packaging the viscous product in appropriate packaging; ⁇ optionally mechanical means for setting in motion the viscous product pe ⁇ nettant to increase its flow rate, said mechanical means preferably being chosen from the group comprising: pumps,
- the flexible container preferably comprises a wall made up:
- the flexible container has a mechanically resistant and leaktight wall made from canvas (s) whose weight in the uncoated state is in the range from 100 to 300 g / m 2 and in that the lining bag has a thickness in the range from 5 to 500 microns.
- the lining bag may be polypropylene canvas with a density equal to 150-300 g / m 2 for a container of 1000 liters.
- the lining bag is for example glued or sewn inside or outside the mechanically resistant wall.
- This thin lining bag can have a thickness of between 10 and 250 microns. It should be noted that the fabric thicknesses of the wall and the lining bag are a function of the mechanical strength and the physico-chemical protection desired.
- the flexible container is provided with one or more drainage spouts, of identical or different structure to that of the flexible container.
- each chute possibly provided on the flexible container can be used for emptying or filling said container and can also play the role of closing an opening, for example by means of a plug or a knotted link.
- This plug could consist of a weld and / or a glue joint.
- Each possible chute may further constitute an element for connecting the flexible container to a downstream means for storing mechanical recovery or conditioning.
- the flexible container has at least one large opening or so-called “total" opening facilitating filling.
- This large opening can be closed by welding and / or by a knot and / or by an adhesive joint. It is preferable that such a large opening is only used for filling, unlike the openings and / or the drainage spouts as described above.
- the emptying device comprises, on the one hand, a pressing member comprising at least one piston and, on the other hand, at least one emptying tank intended to receive the flexible container to be emptied and designed as a female part for the male part which is the piston of the pressing member in movement, in particular in the forward direction corresponding to the pressurization of the flexible container or of its only liner bag.
- the emptying device is such that:
- the piston of the presser member comprises a head (preferably circular) connected to a rod intended to cooperate with a fixed actuating cylinder in reciprocating translational movement, said actuator being mounted on a fixed structure, said head being intended to enter the drain tank to compress the flexible container; • and the drain tank which comprises at least one outlet for the viscous product, and which is optionally equipped with displacement means (preferably rollers), is preferably constituted by a hollow cylinder intended to receive the flexible container and in which the piston head is capable of sliding, this head preferably being circular and of a diameter sufficiently close to the internal diameter of the tank so that the tightness with respect to the viscous product can be ensured, advantageously using a peripheral O-ring resting on the preferably chamfered edge of the piston head and on the inner wall of the tank.
- the emptying tank is designed so as to be able to be (thermally) closed and in that the piston is able to move under the action of a presser fluid.
- the emptying device comprises an inflatable cylinder, housed between the piston and a cover for reversible closure of the tank and connected to means for supplying pressurizing fluid penetrating the inflation and consequently the displacement of the piston, to allow the expulsion of the viscous product out of the tank.
- the means for supplying the pressure fluid comprise at least one reservoir for the pressure fluid, at least means for conveying the pressure fluid and a pipe equipped with these means and connecting the reservoir for the pressure fluid to the inflatable cylinder.
- the presser fluid is e.g. chosen from the group of incompressible fluids, preferably from the subgroup comprising water or oil or from the group of compressible fluids, air being preferred.
- the emptying device comprises at least one emptying tank intended to receive the flexible container to be emptied or possibly its only liner bag and suitable for being pressurized by means of a pressure fluid, so as to expel the viscous product out of the tank.
- the partial pressure exerted on the flexible container results (respectively indirectly and directly) from a pressing fluid constituted by any liquid or gaseous fluid, advantageously liquid, viscosity less than 50 Pa.s.
- a pressing fluid constituted by any liquid or gaseous fluid, advantageously liquid, viscosity less than 50 Pa.s.
- the drain tank is designed as an autoclave provided with at least one orifice that can be opened or closed and used to introduce and / or evacuate the pressurizing fluid.
- this autoclave emptying tank also comprises at least one emptying opening for the viscous product.
- the emptying device comprises, on the one hand, a pressing member comprising at least one set comprising at least one roller and at least one counter-roller element, preferably at least two substantially parallel rollers and movable in rotation about their respective axes and, on the other hand, means for suspending the flexible container so that the opening (s) is (are) arranged at the bottom; the assembly being designed so that the two rollers are able to move from top to bottom while laminating and compressing the flexible container which runs between these two rollers, the latter possibly being driven by a motor, this mechanization possibly being combined or replaced by pulling the flexible container suspended upwards.
- the emptying device of this third embodiment is such that:
- the flexible container is equipped, in its upper part, with at least one grip handle pe ⁇ nettant its suspension and in its lower part, with at least one outlet opening for the viscous product, possibly provided with a chute, the container advantageously having a general shape of a pear, the flared part of which forms the base;
- the dimensions of the flexible container and possibly of its liner bag taken alone are chosen so that when pressurized, the container is kept in the inflated or partially inflated state. Only the flexible container and / or its lining bag are thus kept under tension, which limits the risks of unwanted folding leading to blockage of the drain opening (s).
- the dimensions of the flexible container and / or the lining bag are smaller in a proportion of 2 to 15% than those of the tank.
- the counter-roller can optionally be a plate associated with one or more rollers.
- the plate can also be replaced by a flat support which can be for example a vertical wall or a horizontal plane (the ground).
- the flexible container and / or its lining bag has no surface irregularity in the substantially vertical direction (for example vertical seam or vertical blister or vertical asperities) on at least part of their height so that the contact of the flexible container and / or its lining bag with the internal face of the emptying tank creates a substantially toric contiguous zone forming a barrier to viscous products.
- Figure 1 shows a block diagram of one embodiment of the drain kit according to the invention
- Figure 2 a block diagram of a variant of the embodiment according to Figure 1
- Figure 3 shows a block diagram of one embodiment of the drain kit according to the invention.
- FIG. 1 shows a kit for draining viscous products (viscosity> 50 Pa.s: for example silicone sealant 3000 Pa.s) comprising a device 1 for draining viscous products 2, included in a flexible container 3.
- the emptying device 1 comprises a structure or frame 4 on which is fixed a jack 5 comprising a piston 5.1 and a jack body 5.2. The latter is used to actuate the pressure piston 5.1.
- the latter has a maximum outside diameter slightly smaller than the minimum inside diameter of the tank (0.1 to 2.5% lower).
- the drain tank 6 fitted with rollers 7 constitutes another element of the drain device 1.
- the flexible container 3 is housed inside the drain tank 6.
- This flexible container 3 has a drain opening 9 formed in its lower part and arranged opposite the outlet conduit 8 of the drain tank 6. This opening emptying 9 is carried out just before pressurization by the pressing member -5, 5.1, 5.2- and after having transported the flexible container 3 from its storage and / or transport site to the emptying site defined by the drain tank 6.
- the flexible container 3 has an envelope 10 which can be formed: • either by a multilayer of mechanically resistant walls (for example polypropylene canvas) / thin polyethylene bags, possibly sewn and / or glued inside the wall in canvas; o either by the lining bag only after it has been extracted from the interior of the flexible container 3.
- an envelope 10 which can be formed: • either by a multilayer of mechanically resistant walls (for example polypropylene canvas) / thin polyethylene bags, possibly sewn and / or glued inside the wall in canvas; o either by the lining bag only after it has been extracted from the interior of the flexible container 3.
- the detail on the structure of this envelope 10 appears in more detail in FIG. 2 described below.
- the flexible container 3 must be designed so as to ensure a minimum loss of material, and in particular less than 2%.
- the flexible container 3 is a “big bag” type container with a cylindrical bottom, with no vertical seam, the diameter of which is slightly less than that of the emptying tank 6, so that the swelling undergone by this flexible container during of the pressurization keeps the wall of the flexible container 2 under tension during emptying.
- this wall is constituted by a polypropylene fabric comprising an internal bonded layer formed by a bonded polyethylene lining bag.
- This type of mechanically resistant wall has a protective role during transport and storage, while its internal layer (“inliner”) seals during emptying, so that the viscous product only flows through the opening for emptying the envelope of the flexible container when it is pressurized.
- the seal between the piston head 5.1 (pressure member) and the internal face of the drain tank 6 is ensured by an O-ring 11 which forms a barrier to the migration of the viscous product 2 above the piston head 5.1 .
- the O-ring 11a for example a section with a diameter equal to 50 mm, plus or minus 20 mm and its length is equal to the perimeter of the interior of the drain tank 6, so that by playing on the compressibility of the material making up the O-ring 11, preferably made of elastomeric material, this O-ring 11 is guaranteed to be continuous. It is housed in the space delimited by an annular zone of the internal face of the cylindrical emptying tank 6 and by the chamfered piston 5.1 (45 ° chamfer). This chamfer is used to exert an oblique force on the elastomer O-ring 11 so that it is perfectly pressed against the internal face of the tank to thus ensure a good seal.
- the flexible container can be transported from its storage site to the emptying site, for example by means of a forklift or a mobile hoist. To do this, it is advantageous that the flexible container has for example one or more resistant handles pe ⁇ uettant it to be lifted by the means of transport.
- outlet conduit 8 could be arranged on the piston head 5.1.
- This outlet conduit 8 allows the viscous fluid to be expelled from the drain tank 2.2 due to the pressure difference between the interior of the flexible container 3 and the external pressure.
- the diameter of this outlet duct is for example 76 mm.
- This outlet duct 8 may include a flexible hose permitting the transport of the viscous product 2 on storage conditioning or mechanical recovery means arranged downstream.
- this hose is removable so that it can be changed for each product drained.
- outlet orifices could be provided for distributing the viscous product 2 over several storage conditioning or mechanical recovery means.
- a certain pressure is available at the outlet level 8. This pressure is less than or equal to that to which the viscous product 2 is subjected in the flexible container 3.
- the pressurization assembly 5 (piston 5.1 and cylinder 5.2), it is possible to impose on the flexible container, a pressure all the greater as the product 2 is viscous (for example up to 6.5 bars without technical difficulties) and that the required flow is high.
- the deflection of the flexible container is controlled during emptying, so that this container does not tear, folds up optimally without blocking the outlet orifice 9.
- volume flow rates are measured from the mass passed over a given time and from the density of the viscous product 2.
- FIG. 2 shows a device similar to that of FIG. 1 as described above, in which the presser fluid allowing the pressurization to be carried out, is contained in a flexible inflatable jack 12 housed in the drain tank 60, between a tray of separation forming piston 5.10 and a cover 13.
- the latter can be fixed in a reversible manner at the top of the drain tank 60 by means of reversible securing means 14 represented symbolically in FIG. 2.
- These means 14 are for example bolts.
- the inflatable flexible cylinder 12 may for example be of the type sold by the company PRONAL.
- the drain tank 60 can for example be a stainless steel tank of capacity, e.g. 1000 liters.
- the drain tank 60 contains in its lower part a flexible container 30 of viscous products 2.
- the bottom of the flexible container has a drain opening 90 In the same way as for the embodiment according to FIG. 1, this drain opening 90 is formed in the flexible container 30 just before pressurization using the inflatable flexible jack 12.
- An elastomeric seal 110 is interposed between the separation plate / piston 5.10.
- This elastomeric seal 1 10 is an O-ring which plays the same role as that referenced 11 in Figure 1 described above. Sealing on either side of the piston plate 5.10 is thus ensured vis-à-vis the viscous product 2 contained in the flexible container 30.
- the flexible inflatable cylinder 12 is connected to a reservoir of presser fluid 16, by the through a pipe 17, equipped with routing means 17.
- the pressing fluid can be an incompressible fluid, namely a liquid such as water or oil, or even a compressible fluid such as air.
- the means 17 for conveying the fluid contained in the reservoir 15 to the flexible inflatable cylinder 12 via the pipe 16, are formed for example by an appropriate pump.
- said conveying means 17 correspond to a compressed air circuit comprising all the adapted components and known in themselves (valve, valve, etc.).
- the pressing fluid is an incompressible fluid of the oil or water type. It is then advantageous to provide, in the flexible inflatable cylinder 12, a cushion filled with compressible gas (for example air). Such a cushion behaves like a tampon pe ⁇ nettant to smooth the flow of the fluid and limit or even eliminate the latency times of flow of the viscous product at the opening of the drain tank.
- a cushion filled with compressible gas for example air.
- the cover 13, or even the emptying tank 60 is equipped with a safety valve allowing the evacuation of air overpressures.
- the device of FIG. 2 is for example arranged upstream of means for packaging the viscous product, for example in cartridges.
- FIG. 3 shows another embodiment of the emptying kit according to the invention.
- This kit includes a drain device 20 and a flexible container 21, generally made of pear.
- the emptying device 20 consists of a set of two rollers 22, 23 connected to each other by a linkage system 24 allowing the distance between the axes of the rollers 22 and 23 to be varied.
- the flexible container 21 comprises a mechanically resistant wall 25 and an internal lining bag 26 bonded to the internal face of the wall 25.
- This flexible container 21 is also equipped in its lower part with an outlet conduit 27 associated with a means of mechanical recovery 28 constituted by a pump.
- the flexible container 21 includes a lifting or suspension handle 29.
- the representation in solid lines in FIG. 3 corresponds to the situation of the emptying kit before pressurization and the representation in mixed lines to the situation of the emptying kit at the start of pressurization.
- the rollers 22, 23 are brought together so as to press the upper part of the flexible container 21.
- the rollers 22 and 23 thus brought together then begin their descent as symbolized by the vertical arrows.
- the flexible container 21 is thus gradually pressed from its upper end to its lower end.
- the viscous product contained in the container 21 is subjected to a pressure which depends on the resistance of the container and flows through the outlet conduit 27. The extraction of this viscous product is facilitated by the use of the pump 28.
- the handle 29 of the flexible container 21 is passed between the rollers 22, 23, the handle 29 is lifted, for example with a forklift.
- the rollers 22, 23 are clamped on either side of the upper end of the container by means of the inter-axis adjustment system 24.
- the rollers 22, 23 descend along the container under their own weight repelling the product viscous downwards until the weight of the rollers and the reaction forces of the compressed container 21 are balanced.
- the viscous product for example silicone sealant
- the rollers 22, 23 descend gradually pressing the entire contents of the container 21.
- This form of implementation works for example with a flow rate of approximately 35 liters per minute for a 33 cm diameter drain opening with 10 cm diameter steel rollers weighing approximately 40 kg between them (steel rollers coated with rubber to adhere well to the flexible container).
- the inner lining bag of the flexible container 21 is fixed by gluing or sewing to the external polypropylene fabric 25.
- the implementation of a pump 28 allows to significantly increase (xlO) the output flow of the viscous product.
- the description of the first embodiment is supplemented by the following examples.
- the device used is that shown in Figure 1 and described above. More specifically, use is made in this example of a tank press provided for emptying viscous products contained in tanks of diameter up to 1240 mm, said tanks being resistant to the working pressure.
- This press has a steel structure, the structure maintains a cylinder in a vertical position.
- the 20 cm diameter cylinder is hydraulic and operates with 0 to 250 bar of hydraulic pressure supplied by a hydraulic group.
- the pressure piston, actuated by the cylinder has a diameter of 1220 mm, more or less 3 mm.
- a control cabinet allows to control the raising and lowering of the jack.
- the tank used with an internal diameter of 1235 mm, more or less 10 mm, a depth of 1000 mm, is made of stainless steel and resists a pressure greater than 7 bars.
- the product outlet opening is located in the bottom of the tank, on the side.
- a pressure-resistant and flexible hose connects the orifice of the tank to the metering device of the cartoner.
- the hose has a length of one meter and an inside diameter of 76 mm.
- the “big bag” tested is a circular canvas “big bag” whose perimeter is 3640 mm, which is clearly less than the inside perimeter of the tank.
- This "big bag” has a flat cylindrical bottom, a 100 micron full opening polyethylene bag, not glued to the “big bag”, but sewn to it at the intersection between the cylinder (body of the “big bag ”) and the upper disc closing the upper part of the” big bag “.
- the “big bag” has a filling spout placed on the upper disc of the “big bag”, 5 cm from the edge (this spout can be used to carry out a "clean” emptying by serving as an emptying spout, thus protecting from dirt. orifice in the pressure plate).
- the upper disc and the chute are made of a canvas coated with polyethylene, tight to the product contained.
- the flexible container contains 680 kg of product at the start of emptying.
- the product contained in the flexible container for the test is a silicone sealant of the Oxime type.
- the tank has rollers pe ⁇ nettant its movement on a flat ground.
- the product contained in the flexible container for the test is a silicone sealant of the Acetoxy type.
- the flexible container is placed in the tank with a forklift. On the flexible container, a polyethylene film is placed, then the rubber seal against the edges of the tank.
- the flexible container is pierced through the outlet orifice: the slot made measures approximately 10 cm. Connect the hose to the outlet, then pressurize by lowering the cylinder.
- the metering device of the cartoner fills up quickly (time less than 1 second, close to 0.5 seconds)
- the cartoner normally operates at 30 strokes per minute.
- the material loss at the bottom of the flexible container is 8.6 liters or 1.26%.
- the tank is mostly clean: only the parts close to the outlet orifice are dirty, i.e. over a radius of approximately 25 cm.
- the device used is that shown in Figure 1 and described above. More specifically, use is made in this example of a tank press provided for emptying viscous products contained in tanks of diameter up to 1240 mm, said tanks being resistant to the working pressure.
- This press has a steel structure, the structure maintains a cylinder in a vertical position.
- the 20 cm diameter cylinder is hydraulic and operates with 0 to 250 bar of hydraulic pressure supplied by a hydraulic unit.
- the pressure piston, actuated by the cylinder has a diameter of 1220 mm, more or less 3 mm.
- a control apnet allows to control the raising and lowering of the jack.
- the tank used with an internal diameter of 1235 mm, more or less 10 mm, a depth of 1000 mm is made of stainless steel and withstands a pressure greater than
- the product outlet opening is located in the pressure plate, on the side, approximately 15 cm from the edge of the plate.
- a pressure-resistant steel pipe serves as a conveyor from the tray outlet to the top of a drain container.
- the hose is fixed to the orifice of the pressure plate by a tight fitting.
- the hose has a total length of 2.5 meters and an inside diameter of 76 mm.
- the “big bag” tested is a “big bag” circular canvas with offset straps, 1100 mm high, its perimeter is 3640 mm, which is significantly less than the inside perimeter of the tank.
- This "big bag” has a flat cylindrical bottom, an opening polyethylene bag total thickness 100 microns, not glued to the “big bag” but sewn to it at the intersection between the cylinder (body of the “big bag") and the upper disc closing the upper part of the "big bag”.
- the “big bag” has a filling chute placed on the upper disc of the "big bag", 5 cm from the edge of the "big bag”.
- the upper disc and the chute are made of a canvas coated with polyethylene, tight to the product contained.
- the container contains 680 kg of product at the start of emptying.
- the tank has wheels that allow it to move.
- the product contained in the flexible container for the test is an acetoxy type silicone sealant.
- the flow rate obtained at the outlet of the pipe is greater than 70 liters per minute, it oscillates above all around the value 120 liters per minute with a maximum of 145 liters per minute, this for an oil pressure in the cylinder of 220 bars (this which corresponds to approximately 5.7 bars in the tank).
- the flexible container weighed after emptying to a mass of 12 kg.
- the flexible container weighs
- the device used is that shown in Figure 1 and described above. More specifically, use is made in this example of a tank press for a rigid tank, resistant to the working pressure, of diameter up to 1240 mm.
- This press has a steel structure, the structure maintains a cylinder in a vertical position.
- the 20 cm diameter cylinder is hydraulic and operates with 0 to 250 bar of hydraulic pressure supplied by a hydraulic group.
- the pressure piston, actuated by the cylinder has a diameter of 1220 mm plus or minus 3 mm.
- a control cabinet allows to control the raising and lowering of the jack.
- the tank used with an internal diameter of 1235 mm, more or less 10 mm, a depth of 1000 mm, is made of stainless steel and withstands a pressure greater than 10 bar.
- the product outlet opening is located in the bottom of the tank, on the side.
- a pressure-resistant and flexible hose connects the orifice of the tank to the metering device of the cartoner.
- the hose has a length of one meter and an inside diameter of 76 mm.
- the “big bag” tested is a circular canvas “big bag” whose perimeter is 3640 mm, which is clearly less than the inside perimeter of the tank.
- This "big bag” has a flat cylindrical bottom, a 100 micron thick polyethylene bag, not glued to the "big bag” but sewn to it at the intersection between the cylinder (body of the "big bag") and the upper disc fennant the upper part of the "big bag”.
- the "big bag” has a filling spout which acts as a drainage spout, placed on the upper disc of the "big bag", 5 cm from the edge, for emptying from above through an orifice in the pressure plate.
- the upper disc and the chute are made of a canvas coated with polyethylene, tight to the product contained.
- the product contained in the flexible container for the test is a silicone sealant of the Oxime type.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
- Packages (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
- Basic Packing Technique (AREA)
- Drying Of Solid Materials (AREA)
- Extraction Or Liquid Replacement (AREA)
- Silicon Polymers (AREA)
- Devices For Dispensing Beverages (AREA)
- Control And Other Processes For Unpacking Of Materials (AREA)
Abstract
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE602004011209.7T DE602004011209T3 (de) | 2003-02-13 | 2004-02-03 | Vorrichtung zum entfernen von einem viskosen produkt aus einem flexiblen behälter |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0301724A FR2851241B1 (fr) | 2003-02-13 | 2003-02-13 | Procede de vidange d'un conteneur souple renfermant un produit visqueux |
| FR0307872A FR2851242B1 (fr) | 2003-02-13 | 2003-06-30 | Procede de vidange d'un conteneur souple renfermant un produit visqueux |
| PCT/FR2004/050039 WO2004074164A1 (fr) | 2003-02-13 | 2004-02-03 | Procede de vidange d’un conteneur souple renfermant un produit visqueux |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP1625093A1 true EP1625093A1 (fr) | 2006-02-15 |
| EP1625093B1 EP1625093B1 (fr) | 2008-01-09 |
| EP1625093B2 EP1625093B2 (fr) | 2017-03-08 |
Family
ID=32773880
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP04707566.8A Expired - Lifetime EP1625093B2 (fr) | 2003-02-13 | 2004-02-03 | Procede de vidange d'un conteneur souple renfermant un produit visqueux |
Country Status (15)
| Country | Link |
|---|---|
| US (2) | US8157127B2 (fr) |
| EP (1) | EP1625093B2 (fr) |
| JP (1) | JP2006519143A (fr) |
| KR (3) | KR101414250B1 (fr) |
| AT (1) | ATE383319T2 (fr) |
| AU (1) | AU2004213207B2 (fr) |
| BR (1) | BRPI0407498B1 (fr) |
| CA (1) | CA2515037C (fr) |
| DE (1) | DE602004011209T3 (fr) |
| ES (1) | ES2300744T5 (fr) |
| FR (1) | FR2851242B1 (fr) |
| MX (1) | MXPA05008590A (fr) |
| PL (1) | PL204468B1 (fr) |
| RU (1) | RU2339557C2 (fr) |
| WO (1) | WO2004074164A1 (fr) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3650364A1 (fr) | 2018-11-06 | 2020-05-13 | Fluid-Bag Ltd | Procédé et agencement pour vider un récipient flexible |
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| DE102009003044A1 (de) * | 2009-05-12 | 2010-11-18 | Wacker Chemie Ag | Verfahren zur Dosierung von Massen auf der Basis von Organopolysiloxanen |
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- 2004-02-03 KR KR1020137022244A patent/KR101414250B1/ko not_active Expired - Fee Related
- 2004-02-03 KR KR1020127014090A patent/KR20120065453A/ko not_active Ceased
- 2004-02-03 US US10/544,375 patent/US8157127B2/en not_active Expired - Fee Related
- 2004-02-03 RU RU2005128515/12A patent/RU2339557C2/ru active
- 2004-02-03 EP EP04707566.8A patent/EP1625093B2/fr not_active Expired - Lifetime
- 2004-02-03 PL PL378631A patent/PL204468B1/pl unknown
- 2004-02-03 JP JP2006502171A patent/JP2006519143A/ja active Pending
- 2004-02-03 CA CA2515037A patent/CA2515037C/fr not_active Expired - Lifetime
- 2004-02-03 MX MXPA05008590A patent/MXPA05008590A/es active IP Right Grant
- 2004-02-03 AU AU2004213207A patent/AU2004213207B2/en not_active Ceased
- 2004-02-03 DE DE602004011209.7T patent/DE602004011209T3/de not_active Expired - Lifetime
- 2004-02-03 AT AT04707566T patent/ATE383319T2/de active
- 2004-02-03 WO PCT/FR2004/050039 patent/WO2004074164A1/fr not_active Ceased
- 2004-02-03 KR KR1020057015013A patent/KR20060018812A/ko not_active Ceased
- 2004-02-03 BR BRPI0407498-0A patent/BRPI0407498B1/pt not_active IP Right Cessation
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2009
- 2009-09-22 US US12/564,144 patent/US8590740B2/en not_active Expired - Fee Related
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3650364A1 (fr) | 2018-11-06 | 2020-05-13 | Fluid-Bag Ltd | Procédé et agencement pour vider un récipient flexible |
| US11053043B2 (en) | 2018-11-06 | 2021-07-06 | Fluid-Bag Ltd | Method and arrangement for emptying a flexible container |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1625093B2 (fr) | 2017-03-08 |
| WO2004074164A1 (fr) | 2004-09-02 |
| AU2004213207A1 (en) | 2004-09-02 |
| BRPI0407498A (pt) | 2006-02-14 |
| JP2006519143A (ja) | 2006-08-24 |
| US20100006594A1 (en) | 2010-01-14 |
| DE602004011209T3 (de) | 2017-08-03 |
| PL378631A1 (pl) | 2006-05-15 |
| ATE383319T2 (de) | 2008-01-15 |
| BRPI0407498B1 (pt) | 2015-08-18 |
| FR2851242A1 (fr) | 2004-08-20 |
| RU2005128515A (ru) | 2006-01-27 |
| AU2004213207B2 (en) | 2010-06-17 |
| US20060249535A1 (en) | 2006-11-09 |
| PL204468B1 (pl) | 2010-01-29 |
| KR20060018812A (ko) | 2006-03-02 |
| ES2300744T3 (es) | 2008-06-16 |
| FR2851242B1 (fr) | 2005-10-21 |
| MXPA05008590A (es) | 2006-02-28 |
| DE602004011209D1 (de) | 2008-02-21 |
| KR20130112945A (ko) | 2013-10-14 |
| RU2339557C2 (ru) | 2008-11-27 |
| KR101414250B1 (ko) | 2014-07-01 |
| US8157127B2 (en) | 2012-04-17 |
| KR20120065453A (ko) | 2012-06-20 |
| ES2300744T5 (es) | 2017-07-20 |
| CA2515037C (fr) | 2012-11-20 |
| CA2515037A1 (fr) | 2004-09-02 |
| US8590740B2 (en) | 2013-11-26 |
| EP1625093B1 (fr) | 2008-01-09 |
| DE602004011209T2 (de) | 2009-01-08 |
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