EP0262484A2 - Dispositif de pompage - Google Patents

Dispositif de pompage Download PDF

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Publication number
EP0262484A2
EP0262484A2 EP87113228A EP87113228A EP0262484A2 EP 0262484 A2 EP0262484 A2 EP 0262484A2 EP 87113228 A EP87113228 A EP 87113228A EP 87113228 A EP87113228 A EP 87113228A EP 0262484 A2 EP0262484 A2 EP 0262484A2
Authority
EP
European Patent Office
Prior art keywords
conveying device
liquid
storage space
spring
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Withdrawn
Application number
EP87113228A
Other languages
German (de)
English (en)
Other versions
EP0262484A3 (fr
Inventor
Fritz Meckenstock
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Megaplast Dosiersysteme GmbH and Co
Original Assignee
Megaplast Dosiersysteme GmbH and Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from DE19863633173 external-priority patent/DE3633173A1/de
Priority claimed from DE19873722553 external-priority patent/DE3722553A1/de
Application filed by Megaplast Dosiersysteme GmbH and Co filed Critical Megaplast Dosiersysteme GmbH and Co
Publication of EP0262484A2 publication Critical patent/EP0262484A2/fr
Publication of EP0262484A3 publication Critical patent/EP0262484A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/02—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape
    • B05B1/10—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape in the form of a fine jet, e.g. for use in wind-screen washers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B9/00—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
    • B05B9/03—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material
    • B05B9/04—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump
    • B05B9/08—Apparatus to be carried on or by a person, e.g. of knapsack type
    • B05B9/085—Apparatus to be carried on or by a person, e.g. of knapsack type with a liquid pump
    • B05B9/0877—Apparatus to be carried on or by a person, e.g. of knapsack type with a liquid pump the pump being of pressure-accumulation type or being connected to a pressure accumulation chamber
    • B05B9/0883—Apparatus to be carried on or by a person, e.g. of knapsack type with a liquid pump the pump being of pressure-accumulation type or being connected to a pressure accumulation chamber having a discharge device fixed to the container
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1001—Piston pumps
    • B05B11/1009—Piston pumps actuated by a lever
    • B05B11/1011—Piston pumps actuated by a lever without substantial movement of the nozzle in the direction of the pressure stroke
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1038—Pressure accumulation pumps, i.e. pumps comprising a pressure accumulation chamber
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1038—Pressure accumulation pumps, i.e. pumps comprising a pressure accumulation chamber
    • B05B11/1039—Pressure accumulation pumps, i.e. pumps comprising a pressure accumulation chamber the outlet valve being mechanically opened after a defined accumulation stroke

Definitions

  • the invention relates to a conveying device for dispensing liquids, in particular for spraying the liquids, with a manually operable liquid conveying device.
  • Such a conveyor device is known from the cosmetics industry, with which e.g. Hair fastener can be applied.
  • To remove the hair set it is necessary to depress an actuating handle of the liquid delivery device, as a result of which the hair set is sucked in via a delivery tube which is immersed in the hair set and is discharged from a spray can.
  • the hair fastener is only discharged when the operating handle is pressed down, so that the spray jet breaks off when the operating handle is moved back.
  • a continuous spray jet cannot be achieved.
  • a continuous spraying process would, however, be advantageous for an even application of the hair set.
  • Conveyors with continuous liquid application could also be used to advantage in other areas that do not belong to the cosmetics industry.
  • Spray cans filled with propellant gas are known as spray cans filled with propellant gas. These facilities are depending on the propulsion used However, gas is harmful to the environment and, due to its pressurized containers, represents an explosion hazard.
  • the invention is therefore based on the object of providing a conveying device of the type mentioned at the outset which enables continuous liquid delivery, in particular a spray jet.
  • the liquid delivery device is connected to a storage space under volume contraction, into which an outlet for the stored liquid opens.
  • This device according to the invention enables a continuous dispensing of liquid by filling the storage space by means of the liquid conveying device, the stored liquid being pressurized by the volume-contracting effect of the storage space.
  • the liquid storage volume under pressure can leave the storage space continuously via the outlet.
  • the supply of the liquid into the storage space by means of the liquid delivery device can be done discontinuously.
  • the storage space has expandable, self-resetting walls.
  • the expandable walls are widened by the amount of liquid introduced via the liquid delivery device, so that a pressure builds up in the storage space. If the liquid is continuously dispensed through the outlet, the walls automatically return to their original position.
  • the storage space is preferably designed as a storage bellows.
  • the arrangement can be such that the liquid delivery device connects to the storage space via a pressure-controlled valve that opens in the discharge direction that is.
  • This valve fulfills two tasks: on the one hand, it clears the way for the amount of liquid delivered by the liquid delivery device into the storage space and, on the other hand, prevents the amount of liquid located in the storage area from flowing back into the liquid delivery device.
  • the valve is preferably formed by two series-connected, equivalent-acting individual valves. This has the advantage that an optimal seal between the devices is achieved and mutual interference is avoided.
  • a switching valve is connected to the outlet for switching the liquid flow discharged through the outlet on and off.
  • the delivery device is designed as a bellows pump.
  • the bellows pump is preferably connected via an inlet valve to a riser pipe immersed in the liquid to be conveyed.
  • the amount of liquid conveyed by the liquid conveying device per unit of time is greater than the amount of liquid dispensed through the outlet during the same period.
  • the storage bellows is arranged above the liquid delivery device.
  • This effect is achieved in that at least one wall of the storage space interacts with a spring with a hold-up effect and remaining restoring force, and in that in the hold-up position an outlet-side switching valve is shifted into the open position.
  • a spray jet that is stable from the beginning is now achieved.
  • the liquid under contraction is only released when there is a certain, ie sufficiently high internal pressure in the storage space.
  • the device defining this internal pressure is simple and expedient in that at least one wall of the storage space interacts with a spring with a hold-up effect and a permanent restoring force, and that in the hold-up position an outlet-side switching valve is shifted into the open position.
  • the expansion stroke of the storage space is advantageously used for the valve opening control.
  • the spring withstands the stretching force until the desired pressure build-up is achieved. This retention force then breaks down in a defined manner.
  • the spring is curved in the form of a dome in the basic position.
  • the dome shape creates the most favorable conditions for a uniform attack effect.
  • the spring is designed as a circular disc. Also with regard to the desired central system, the invention further proposes that the spring has a central opening which is penetrated by a plunger of the wall opposite the spring in the basic position, which acts on the switching valve with its free end.
  • the wall is designed as an insert piece that closes off the storage space and that has a channel that opens into the interior of the bellows and that also penetrates the tappet.
  • the insert also forms the flow connection bridge between the storage space and the outlet of the conveyor.
  • the insert has a bearing collar guided in a chamber receiving the storage bellows. Its side pointing in the direction of discharge acts as an abutment for the spring, the other side can serve as a push-on limit stop for the component creating the storage space.
  • the procedure is further such that the latter abuts peripherally on an end wall of the chamber on the switching valve side and that the end wall has a central projection for engaging the spring in the hold-up position.
  • the liquid delivery device is designed as a piston pump, which is connected to the storage space via an outlet valve.
  • Such a liquid delivery device proves to be robust; it is also structurally simple and requires only a few components.
  • a handling-friendly solution is achieved by designing the delivery device in the form of a pistol with a trigger valve engaging the piston of the piston pump. Such a device lies comfortably in the hand and creates another favorable prerequisite for the targeted alignment of the spray jet.
  • the invention proposes that the liquid delivery device be connected via a riser pipe to the interior of a housing containing the liquid to be dispensed. The liquid can be sucked out almost completely via the riser pipe, which usually reaches the bottom.
  • FIG. 1 illustrates the invention on the basis of an exemplary embodiment, namely it shows the largely schematically shown liquid associated with a housing 1 containing the liquid supply.
  • Conveyor E in the basic position.
  • the assignment can be reversible or also irreversible, in one case by screwing, in the other case by bouncing the liquid delivery device onto the neck 2 of the housing 1.
  • a screw connection is preferred.
  • a pipe section 5 protruding from the ceiling 4 of the screw cap 3 extends from the corresponding screw cap 3.
  • the liquid delivery device E forms a pump chamber 8 for receiving an axially compressible pump bellows 9, so that a so-called bellows pump is present, as described, for example, in DE-OS 35 09 178.
  • the accordion-shaped bellows wall merges at both ends into an annular wall which is plugged onto a collar 10 of the cap on the cap side and at the other end onto a collar 11 projecting into the pump chamber 8. It can be based on a clip connection.
  • the harmonica-like pump bellows 9 acts as a spring element and holds the liquid delivery device in the basic position shown.
  • the lower, drawn-in edge of the housing part 6 protrudes in a stop-limited manner under a shoulder 12 of the tube section 5 realized by wall offset.
  • the inlet valve V 1 of the liquid delivery device E in the likewise broken transverse bottom 7 of the housing part 1, also centrally located, the associated outlet valve V 2. It is in each case a frustoconical body, the correspondingly inclined valve seat surface in the way the simultaneous formation on the ceiling 4 and transverse floor 7 are generated.
  • the valve seat surface of the inlet valve V 1 continues downward into a nozzle 4 ⁇ , which is one of the feet tion of the cross-profiled valve stem and on the other hand for attaching a down to the bottom 1 ⁇ of the housing 1 rising pipe 14, via which the liquid F reaches the pump bellows 9 by axial displacement of the housing part 6.
  • the liquid delivery device E described is connected to a storage space Sp which is under volume contraction.
  • the latter is connected downstream of the pump bellows 9 in the axial direction.
  • the housing part 6 continues beyond the transverse floor 7 into a chamber 15, which ends at the top with a ceiling 16.
  • a central collar 17 extending somewhat into the chamber 15 extends from this ceiling 16.
  • the upper end of the storage space Sp likewise formed by a harmonica-like bellows body (storage bellows 13), is clipped on; its lower end engages in a corresponding manner on a collar 18 also directed into the chamber.
  • the storage bellows 13 forming the storage space is chosen to be larger than that of the bellows pump and, like this one, consists of expandable, fully resettable material.
  • the storage space Sp is also controlled by valves.
  • the centrally perforated connector 18 in turn has an inlet valve V 3 and the connector 17 of the ceiling 16 has an outlet valve, which, however, is designed as a switching valve and bears the reference symbol V 4.
  • V 3 is designed as a switching valve and bears the reference symbol V 4.
  • the medium pumped into the storage space Sp reaches the outlet 19 of a dispenser head designed as a push-button 20 by opening the switching valve V 4.
  • the outlet 19 consists of an angular channel with an end-side, peripherally arranged spray can 21.
  • the stop-limited displacement of the push-button 20 takes place on a central tube section extending from the ceiling 16, inside which the cross-profiled stem of the switching valve V 4 also leads. Because of the pressure prevailing in the storage space Sp, the latter lies sealingly against its valve seat surface. Holding lugs 22 overlap the widened head of the valve body at an axial distance and thus secure its position during assembly or in the non-filled state. Corresponding precautions have also been taken with regard to valves V 1 and V 3. A corresponding fuse is available for valve V 2 due to the special design of collar 18 there.
  • the pressure actuation button 20 which can also be slightly cushioned in the direction of its basic position, lies at a distance x from the top of the ceiling 16, which corresponds to only a fraction of the actuation stroke y of the liquid delivery device E.
  • the function is as follows: To actuate the dispenser-like device, a pressure force in the direction of arrow P is exerted on the pressure actuation button 30.
  • the switching valve V 4 opens primarily.
  • the bellows pump is also actuated in the subsequent so-called working stroke y, the medium conveyed by this is pushed into the storage space Sp, which thereby complements and exposes its stretchable walls.
  • the restoring force of its stretchy walls ensures the uninterrupted discharge of the storage contents.
  • the amount of liquid conveyed by the liquid conveying device E per unit of time is greater than the amount of liquid dispensed through the outlet 19 during the same period.
  • the storage volume can be adapted to different media types. Above all, reducing the cross-section of the outlet due to an inserted spray nozzle supports this achieved effect. It is above all essential to the invention that the dispensing path is always and quasi automatically opened and the actual pump actuation is connected to it. Even when the finger is only resting, for example when the conveyor is reset, the output jet is not interrupted. The switching valve only closes when the finger is completely lifted, be it by the internal pressure in the storage space or by a return spring (not shown) in the dispenser head.
  • the switching valve V 4 can be secured to avoid an unwanted opening, for example by accidental contact in the direction of the arrow P, for example by a locking device, for which a rotary movement would be suitable.
  • An alternative protective measure is that of the classic protective cap 24. The latter is assigned to the housing 1 by means of the plug connection.
  • the liquid portion discharged from the container 1 is replaced by air admitted through the neck 2.
  • a valve-like arrangement can be made there (not shown in detail).
  • FIGS. Another exemplary embodiment is shown in FIGS.
  • the conveying device shown has a housing 1 which holds a supply of liquid F.
  • the housing 1 can be a bottle which merges into a narrower neck 2 on the upper side.
  • the neck 2 is connected to a liquid delivery device E.
  • a liquid delivery device E can be reversible or also irreversible, in one case e.g. by screwing, in the other case, for example, by bouncing the liquid delivery device E onto the neck 2 of the housing 1.
  • a screw connection is preferred.
  • the liquid conveying device E forms a screw cap 3 as a base part, which carries the internal thread matching the external thread of the neck 2.
  • the liquid delivery device E is designed as a piston pump K.
  • a component of the same is a vertical tube 5 extending from the horizontal ceiling 4 of the screw cap 3.
  • a pipe socket 25 oriented transversely and slightly sloping from the tube 5 and connected to the interior of the tube 5 forms the pump chamber 8.
  • the pump chamber 8 lies approximately in the middle between a lower section 5 ⁇ of the tube 5 and an upper section 5 ⁇ thereof.
  • the pump room is cylindrical.
  • a piston 26 runs in it. The piston 26 forms axially spaced-apart lips which seal against the cylindrical inner wall of the pump chamber 8.
  • An outwardly facing, centrally arranged shaft 27 is articulated with an actuating handle in the form of a trigger valve 28 and is connected with some play.
  • the trigger tap 28 is pivotally mounted about a fixed pivot pin 29 of the liquid delivery device E, which is designed here in the form of a pistol.
  • the pistol-shaped outline is additionally indicated in FIGS. 2 and 3 in dash-dotted lines. It can be shell-shaped halves, which are assembled in the pivoting plane of the faucet 28. Such shells can be produced individually or as an integral part of the liquid conveying device, for example manufactured in the plastic injection molding process.
  • the position of the faucet 28 corresponds to the type of assignment customary in the pistol and therefore requires no further explanation.
  • the vertically arranged pipe 5 merges with its upper pipe section 5 ', which adjoins the pipe socket 25, into a horizontally oriented, that is to say at right-angle chamber 15, which is roughly comparable to the running area of a gun body.
  • the chamber 5 is formed by a cylindrical housing part 30.
  • a vertically aligned bottom 31 In the transition area between the chamber 15 and the upper tube section 5 ⁇ there is a vertically aligned bottom 31.
  • the latter continues into a collar 18 protruding into the chamber 15. which receives an inlet valve V3.
  • An inlet valve (V1) is connected upstream of this in the direction of flow arrow A. This lies partly in the pipe section 5 ⁇ of the vertical pipe 5 lying below the level of the pump chamber 8.
  • connection there to the liquid is provided by a riser pipe 14 upstream of the inlet valve V1.
  • the latter extends to just before the bottom 1 ⁇ of the housing 1.
  • the liquid delivery device E is connected to a storage space Sp which is under volume contraction.
  • the latter is connected to the inlet valve V3.
  • It is a harmonica-like bellows body made of elastic or flexible material. Due to its restoring force, it also acts as a spring element, which in the relaxed basic position assumes the position shown in FIG. 2. The bellows folds are even. There are a total of three folds which are supported on the cylindrical lateral wall of the chamber 15.
  • the respective storage bellows 13 has a plug-in collar 32 and 33 at both ends.
  • the latter lie coaxially in accordance with the rotationally symmetrical structure of the storage bellows 13.
  • the plug-in collar 32 facing the centrally perforated bottom 31 sits tightly on the collar 18; the plug collar 33 pointing in the opposite direction is connected to a comparably rigid wall Wa of the storage space Sp.
  • the wall Wa is implemented as an insert 34 forming the end of the storage space there.
  • the latter forms a disk-shaped bearing collar 35 which is oriented transversely to the horizontal longitudinal center axis zz of the chamber 15, that is to say parallel to the bottom 31.
  • the insert 34 leads in the chamber 15 over this bearing collar 35.
  • Said bearing collar 35 with its vertical ring surface forms the push-on limit stop for the bellows body side the plug collar 33 there of the storage bellows 13.
  • the bearing collar 35 continues centrally into a cylindrical plug projection 36, approximately according to the axial length of the plug collar 33 of the storage bellows 13.
  • the side of the bearing collar 35 facing the bellows forms a plunger 37, coaxially aligned with the plug-in projection 36.
  • the entire, rotationally symmetrical insert 34 is perforated centrally.
  • the corresponding channel has the reference symbol 38. It connects the storage space Sp in terms of flow technology to an outlet 19 of the conveying device.
  • the end of the outlet 19 forms a spray nozzle 21.
  • the valve spring forms a conical spring 39 which is accommodated in a correspondingly enlarged spring chamber and which is supported in a stationary manner with its larger base turn and loads the spherical body with the more closely wound head turn.
  • the valve seat surface is formed by a screw nipple 40. Its external thread engages in a corresponding internal thread in the ceiling 4 of the screw cap 3.
  • the section adjoining the screw nipple in the direction of the riser pipe 14 is disc-shaped. This disk 41, projecting in the direction of the housing 1, forms a central plug-in socket 42, onto which the end of the riser pipe 14 is attached.
  • the whole body 40-42 is perforated centrally, on the top to create the Spring chamber for the conical spring 39 and underneath for the formation of the valve seat and for the passage of the liquid F.
  • valve seat surface is formed by a head piece 43 which can be screwed into the housing 30. Following the valve seat surface, it merges into a longitudinal bore 44 in which the tappet 37 leads.
  • said spring chamber is provided in part by the head piece 43.
  • the remainder is formed by a screw nipple 45 which has the spray nozzle 21.
  • Its free jacket wall section and the subsequent free jacket wall section of the head piece 43 are designed in a continuously conical shape.
  • the taper lies in the direction of the spray nozzle 21.
  • the conical region of the head piece 43 has a greater width than the threaded section thereof. This creates a step 43 ⁇ , which overlaps the end face of the housing part 30 there, with the interposition of a sealing ring 46.
  • the end of the plunger 37 facing the spherical body of the switching valve V4 is transversely grooved. The same also applies to the inner end of the screw nipple 45 facing the spherical body, so that despite contact with the spherical body there is a flowing flow.
  • transverse grooves are labeled 37 ⁇ and in the other case 45 ⁇ .
  • the wall Wa of the storage space Sp interacts with a spring 47 with a hold-up effect but with a restoring force. It is a kind of "spring clip".
  • the load lying in the direction of arrow P results from the pump-induced filling of the storage space Sp and a related horizontal forward displacement of this wall Wa.
  • the corresponding stroke is used to actuate the switching valve V4 by opening the forehead there de of the plunger 37 in the hold-up position against the force of the conical spring 39 which loads it, the spherical body lifts off its valve seat surface. The corresponding triggering occurs suddenly.
  • the spring 47 is designed in a disk-shaped manner for the central, free passage of the plunger 37. In the basic position, it has a uniform dome-shaped curvature (see FIG. 2).
  • the central opening of the spring 47 is designated by 48.
  • the convex side lies in the direction of the wall Wa of the insert 34. In the exemplary embodiment there is still an axial distance between the zenith of the spring 47 and the side of the wall Wa there. It can be referred to as a kind of idle stroke, so that only after that Passing through this distance, the load on the spring 47 begins.
  • the circular spring 47 is supported peripherally on the switching valve-side end wall of the chamber 15. This end wall is formed by the head piece 43 and bears the reference symbol 43 ⁇ .
  • the front edge lies in the corner between the said front wall and the cylindrical inner wall of the chamber 15. The position in this regard is secured by the internal tension of the spring in the manner of a clamping system.
  • the opening 48 is so large that there is no contact with the outer wall of the plunger 37.
  • a projection 49 protrudes from the end wall 43 ⁇ of the head piece 43 in the direction of the concave side of the spring 47 the spring 47, which suddenly gives way under pressure with a hold-up effect, with its front edge.
  • this projection it is an annular wall which is penetrated axially by the plunger and is concentric with the longitudinal bore 44.
  • the inlet valve V3 between the pump chamber 8 and the storage chamber Sp is designed as a cone valve.
  • the valve seat surface takes on a corresponding shape.
  • the stem of the valve body is cross-shaped in cross section. Retaining lugs 22 serve to secure the position of this valve body. The latter overlap the widened head section of the valve body at an axial distance and thus secure its position during assembly or in the non-filled state.
  • the relevant valve body is not spring-loaded, but could have a corresponding precaution.
  • the spring withstands up to a certain internal pressure that has built up due to the pumping movements. Eventually, the resistance of the spring breaks down.
  • the plunger 37 moves forward accordingly. It lifts the ball body of the switching valve V4 from its valve seat. The liquid under pressure shoots into the outlet 19 while flushing the ball in order to leave the nozzle opening 21 as a strong, stable jet. This state is maintained by further pumping movements, since sufficient liquid is conveyed into the storage space Sp. Only when it is fed subsides, the accumulator bellows 13 relaxes. Its contraction force pulls the plunger 37 back, supported by the same effect of the conical spring 39 and spring 47. The hold-up position is canceled due to the restoring force still inherent in spring 47.
  • the switching valve V4 closes.
  • the spring 47 is then again available as a "predetermined breaking" barrier for the next use in the manner explained.

Landscapes

  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Reciprocating Pumps (AREA)
  • Loading And Unloading Of Fuel Tanks Or Ships (AREA)
EP87113228A 1986-09-30 1987-09-10 Dispositif de pompage Withdrawn EP0262484A3 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3633173 1986-09-30
DE19863633173 DE3633173A1 (de) 1986-09-30 1986-09-30 Foerdereinrichtung
DE3722553 1987-07-08
DE19873722553 DE3722553A1 (de) 1987-07-08 1987-07-08 Foerdereinrichtung

Publications (2)

Publication Number Publication Date
EP0262484A2 true EP0262484A2 (fr) 1988-04-06
EP0262484A3 EP0262484A3 (fr) 1989-08-02

Family

ID=25847970

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87113228A Withdrawn EP0262484A3 (fr) 1986-09-30 1987-09-10 Dispositif de pompage

Country Status (6)

Country Link
US (1) US4858788A (fr)
EP (1) EP0262484A3 (fr)
KR (1) KR880003672A (fr)
CN (1) CN87106640A (fr)
BR (1) BR8705023A (fr)
PT (1) PT85816A (fr)

Cited By (1)

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WO2021105367A1 (fr) * 2019-11-27 2021-06-03 Rieke Packaging Systems Limited Distributeur à gâchette de pulvérisation continue

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US5114052A (en) * 1988-08-25 1992-05-19 Goody Products, Inc. Manually actuated trigger sprayer
US5183185A (en) * 1991-02-14 1993-02-02 Ecopac, L. P. Mechanically pressurized dispenser system
US5439178A (en) * 1993-06-24 1995-08-08 The Procter & Gamble Company Pump device including multiple function collapsible pump chamber
US5303867A (en) * 1993-06-24 1994-04-19 The Procter & Gamble Company Trigger operated fluid dispensing device
US5664703A (en) * 1994-02-28 1997-09-09 The Procter & Gamble Company Pump device with collapsible pump chamber having supply container venting system and integral shipping seal
US5518147A (en) * 1994-03-01 1996-05-21 The Procter & Gamble Company Collapsible pump chamber having predetermined collapsing pattern
US5561901A (en) * 1994-10-06 1996-10-08 The Procter & Gamble Company Assembly process including severing part of integral collapsible pump chamber
US5476195A (en) * 1994-10-06 1995-12-19 Procter & Gamble Company Pump device with collapsible pump chamber and including dunnage means
US5716008A (en) * 1996-03-04 1998-02-10 Nottingham-Spirk Design Associates, Inc. Trigger sprayer
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Also Published As

Publication number Publication date
EP0262484A3 (fr) 1989-08-02
KR880003672A (ko) 1988-05-28
BR8705023A (pt) 1988-05-24
CN87106640A (zh) 1988-04-13
PT85816A (pt) 1988-10-14
US4858788A (en) 1989-08-22

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