EP0934123B1 - Pompe - Google Patents

Pompe Download PDF

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Publication number
EP0934123B1
EP0934123B1 EP97948681A EP97948681A EP0934123B1 EP 0934123 B1 EP0934123 B1 EP 0934123B1 EP 97948681 A EP97948681 A EP 97948681A EP 97948681 A EP97948681 A EP 97948681A EP 0934123 B1 EP0934123 B1 EP 0934123B1
Authority
EP
European Patent Office
Prior art keywords
pump
base plate
piston
per
sleeve
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.)
Expired - Lifetime
Application number
EP97948681A
Other languages
German (de)
English (en)
Other versions
EP0934123A1 (fr
Inventor
Karl-Heinz Rosenthal
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.)
ILEOS GMH
Original Assignee
Ileos GmH
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
Application filed by Ileos GmH filed Critical Ileos GmH
Publication of EP0934123A1 publication Critical patent/EP0934123A1/fr
Application granted granted Critical
Publication of EP0934123B1 publication Critical patent/EP0934123B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/10—Valves; Arrangement of valves
    • 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
    • B05B11/0005—Components or details
    • B05B11/0062—Outlet valves actuated by the pressure of the fluid to be sprayed
    • B05B11/007—Outlet valves actuated by the pressure of the fluid to be sprayed being opened by deformation of a sealing element made of resiliently deformable material, e.g. flaps, skirts, duck-bill valves
    • 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
    • B05B11/0005—Components or details
    • B05B11/0062—Outlet valves actuated by the pressure of the fluid to be sprayed
    • B05B11/0075—Two outlet valves being placed in a delivery conduit, one downstream the other
    • 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
    • B05B11/1004—Piston pumps comprising a movable cylinder and a stationary piston
    • 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
    • B05B11/1042—Components or details
    • B05B11/1064—Pump inlet and outlet valve elements integrally formed of a deformable material
    • 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
    • B05B11/1042—Components or details
    • B05B11/1073—Springs
    • B05B11/1074—Springs located outside pump chambers
    • 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
    • B05B11/1042—Components or details
    • B05B11/1073—Springs
    • B05B11/1077—Springs characterised by a particular shape or material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D83/00—Containers or packages with special means for dispensing contents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D88/00—Large containers
    • B65D88/54—Large containers characterised by means facilitating filling or emptying
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/10—Valves; Arrangement of valves
    • F04B53/1072—Valves; Arrangement of valves the valve being an elastic body, the length thereof changing in the opening direction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
    • F04B9/14—Pumps characterised by muscle-power operation
    • 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
    • B05B11/0005—Components or details
    • B05B11/0037—Containers
    • B05B11/0039—Containers associated with means for compensating the pressure difference between the ambient pressure and the pressure inside the container, e.g. pressure relief means
    • B05B11/0044—Containers associated with means for compensating the pressure difference between the ambient pressure and the pressure inside the container, e.g. pressure relief means compensating underpressure by ingress of atmospheric air into the container, i.e. with venting means

Definitions

  • the invention relates to a pump for flowable media, in particular a cosmetic pump, with a base plate which can be fastened to a container and which, in the installed state, has a base plate bottom side facing the container and a base plate top side facing away from the container and is provided with a base plate hole for the passage of a medium contained in the container , wherein the base plate top has a base plate socket arranged around the base plate hole, which is designed to receive a pump device which has a piston which can be pretensioned by at least one compression spring which is supported against the base plate and has a piston cover, which has a piston underside facing the container, a piston top facing away from the container and has a piston hole for the medium, the piston underside having a piston socket which is in sealing connection and essentially axially displaceably connected to the base plate socket.
  • a known pump of the type mentioned is known to the applicant from an in-house prior art.
  • the pump consists of a steel ball that can be sealed onto the base plate hole and that is pressed into or onto the base plate hole by two coil springs that can be clamped under the piston underside.
  • intermediate links are used between the individual coil springs for better guidance of the springs.
  • Sealing rings are used to seal between the piston and an overcap that can be placed on it, which serves for easier actuation of the piston.
  • a pump known from the prior art consists of 7 to 8 different components. Preferably, as many of the components as possible are made of plastic as injection molded parts and are attached to a neck of the container.
  • Comparable pumps are known from DE 32 46 105 and DE 29 02 624.
  • the pump device has a valve spring which is provided with a lower plate which can be sealingly placed on the base plate hole and an upper plate which can be sealingly placed on a support of the piston neck which projects essentially radially to the longitudinal axis of the pump, and the lower plate and the top plate are connected via at least one spring element.
  • the lower plate is expediently designed as a poppet valve.
  • valve spring is particularly simple. It preferably consists of a component that is used during assembly between the piston neck and the base plate neck.
  • valve spring offers the possibility of a considerable reduction in the overall height.
  • the entire pump device can be arranged in the area above the base plate, so that no components have to protrude into the container neck. In this way, containers with a very small cross-section of the opening can be used, which were previously not suitable for use with pumps.
  • the compression spring is preferably arranged between the underside of the piston and the upper side of the base plate on the side of the piston neck and the base plate neck facing away from the central axis of the pump. This prevents the compression spring from coming into contact with the piston neck or the base plate neck when the pump is actuated.
  • the compression spring is integrally formed on the piston.
  • the absolutely necessary number of parts is reduced to four parts, since the pump only consists of the base plate, the piston, the valve spring and the overcap, although the overcap is not a mandatory part.
  • the base plate top side has a guide neck which is integrally formed on the base plate at a distance from the base plate neck in the direction facing away from the center line of the pump and the piston neck engages between the base plate neck and the guide neck.
  • the pump is to be designed in a particularly simple manner, it is also possible, however, for the piston connector to engage in the inside of the base plate connector and for no guide connector to be provided.
  • the base plate connector has a lip seal which bears against the inside of the piston connector. In addition, there is no need for additional sealing rings.
  • the piston socket advantageously also has a lip seal on its outside, which can be sealed against the inside of the guide socket.
  • the lip seals are preferably arranged on the upper edges of the connecting pieces, but can also be placed at other locations depending on the application.
  • the pump according to the invention can also be designed as an airless system in which the air opening is dispensed with.
  • the air opening is preferably arranged between the base plate connector and the guide connector.
  • the piston nozzle then acts as a control valve for the entry of air into the container. The air can flow into the container when the pump is pressed down so far that the sealing edge of the piston neck enters the air opening and the sealing seat between the piston neck and the guide neck no longer exists.
  • the pump having a channel formed on the piston for leading the medium out of the pump through an outlet opening, the channel is designed such that the flow velocity of the medium is increased.
  • the channel is preferably formed in the piston cover and has at least one ring Provide area that has a narrowed radius at at least one point.
  • the annular area acts as an acceleration chamber in which the flow velocity of the medium is greatly increased due to the centrifugal force.
  • the channel can also have a linear region, the cross section of the linear region decreasing in the direction of flow of the medium.
  • This nozzle-like structure also increases the flow velocity of the medium.
  • the channel can have both an arcuate and a linear region which merge into one another in order to combine their effects. Depending on the area of application, several different areas can also be arranged alternately.
  • the channel can also have a deflection wall which runs essentially perpendicular to the direction of flow of the medium flowing through the channel. When the medium strikes this baffle, the medium is atomized.
  • the channel can be at least partially formed in the overcap, so that the channel is formed between the overcap and the piston.
  • An elastic sealing lip which is arranged on the outlet opening and is preferably provided on the overcap, closes the outlet opening when the pump is not in use. In this way, the medium is protected against environmental influences and drying out. It is particularly advantageous if this sealing lip is integrally formed on the overcap. The elastic sealing lip is pushed away by the pressure of the medium when using the pump and allows the medium to escape. At the same time, the sealing lip atomizes the medium in liquid media.
  • the piston and the overcap form an opening at the outlet opening through the area lying against one another, for example in the form of a slot nozzle.
  • the slot nozzle thus formed in the area between the piston and the overcap is significantly easier to manufacture than the slot nozzles known from the prior art, the manufacture of which requires very close tolerances and which are therefore also very susceptible to wear.
  • two prefabricated parts, namely the overcap and the piston are simply put together without special tolerances having to be observed.
  • the lower plate and the upper plate are connected to one another by two rod springs which are integrally formed on the lower plate and the upper plate.
  • rod springs which are integrally formed on the lower plate and the upper plate.
  • other springs e.g. Coil springs are used.
  • the valve spring has two rod springs, which are offset from one another and are integrally formed on the top plate. This configuration ensures that the bar springs do not interfere with the load and slide past one another when they snap. From a manufacturing point of view, this configuration also has the advantage that a jaw shape with two jaws can be used, so that the valve spring can be easily removed from the mold after spraying.
  • the top plate preferably has a smaller outside diameter than the inside diameter of the piston neck in the area above the support. This configuration ensures that the medium can escape.
  • the top plate is curved to the side facing away from the base plate, as a result of which the pretension necessary for the function between the upper contact point of the top plate on the underside of the piston and the guaranteed lower contact point of the top plate on the support is ensured.
  • the base plate, piston, overcap and valve spring are preferably made of one material. This also makes disposal easier.
  • the terms used outside and inside refer to the longitudinal axis 20 of the pump.
  • Outward means in the direction facing away from the longitudinal axis 20, inward in the direction facing the longitudinal axis 20.
  • the designations below and above refer to the pump arranged on the container 2. Downwards denotes the direction facing the container 2, upwards the direction away from the container.
  • the pump essentially consists of a base plate 1, which is fastened on a container 2, a piston 3, a valve spring 4 arranged between the base plate 1 and the piston, and an overcap 5.
  • the base plate 1 consists of a lid-like area with a base plate bottom 6 facing the container in the installed state and a base plate top 7 facing away from the container, which lies sealingly on the edge of a container neck 8 of the container 2.
  • the base plate 6 has a container edge 9 running perpendicular to the base plate 1 in the direction of the container 2 and on the base plate top side 7 a piston edge 10 running perpendicular to the base plate 1 in the opposite direction to the container 1.
  • the container rim 9 and the piston rim 10 are integrally formed on the base plate 1.
  • the base plate 1 is preferably injection molded from a plastic.
  • the container rim 9 has, on its inside facing the container 2, a collar 11 running radially in the direction of the container 2. This collar 11 engages in a recess 12 provided on the outside of the container neck 8.
  • the base plate 1 can thus be latched to the container 1.
  • the piston rim 10 also has a collar 13 at its upper end on its inside, which is used to fix the piston 3 and the overcap 5 and to reduce it the friction between these components when the pump is operated.
  • the base plate 1 Above the center of the container neck 8, the base plate 1 has a base plate hole 14 through which the medium contained in the container 2 can be conveyed out of the container 2 by the pump. The medium is sucked out of the container 2 via a riser pipe 15.
  • the riser pipe 15 is inserted in a riser pipe socket 16 integrally molded on the base plate underside 6 around the base plate hole 14 and is sealingly connected to the base plate.
  • a cylindrical base plate socket 17 is integrally formed on the base plate top 7, a cylindrical base plate socket 17 is integrally formed.
  • This base plate connector 17 surrounds the base plate hole 14 in a circular ring.
  • a guide stub 18 is integrally formed on the base plate top 7, which is arranged at a distance from the base plate stub 17 in the direction facing away from the longitudinal axis 20 of the pump, so that there is a circular annular gap between the outer surface of the base plate stub 17 and the inner surface of the guide stub 19 is formed.
  • This annular gap 19 serves to receive a piston neck 22, which is described below.
  • the piston 3 has a piston cover 21 which extends essentially transversely to the longitudinal axis 20 of the pump and has a piston underside 21a facing the container 2 and a piston top 21b facing away from the container.
  • a cylindrical piston connector 22 is integrally formed on the piston underside 21a.
  • This piston socket 22 surrounds a piston hole 23 provided in the piston cover 21 in an annular manner.
  • the piston hole 23 is arranged offset from the longitudinal axis 20 of the pump, but can be arranged at any point on the piston cover 21 within the piston nozzle 22, depending on the area of use.
  • the diameter of the piston socket 22 is slightly larger than that of the base plate socket 17, but on the other hand slightly smaller than that of the guide socket 18. In this way it is ensured that the piston socket 22 is in sealing connection with the base plate socket 17 when the pump is assembled by being in the Annular gap 19 engages.
  • the piston socket 22 is guided on its outside by the guide socket 18 and on its inside by the base plate socket 17.
  • both the base plate connector 17 and the piston connector are provided with lip seals 24, 25 which extend radially away from the longitudinal axis 20 of the pump.
  • the lip seal 24 of the base plate connector 17 bears against the inner surface of the piston connector 22 under prestress, and the lip seal 25 of the piston connector 22 bears against the inside of the guide connector 18 under prestress.
  • the space enclosed by the base plate connector 17 and piston connector 22 forms a pump chamber 35.
  • the piston underside 21a has an integrally formed spiral compression spring 26, which is arranged in the radial direction from the longitudinal axis 20 of the pump away from the piston neck 22 such that it is on the base plate top 7 at a radial distance from the longitudinal axis 20 of the pump Direction of the guide socket 18 rests.
  • the present compression spring 26 is designed with two gears in order to obtain a higher spring force with a shorter length of the compression spring 26. If a larger overall height of the pump is acceptable, the spring can also be single-track.
  • a downwardly extending cladding web 27 is also integrally formed. This cladding web 27 serves to axially guide the piston 3 when the pump is actuated and assembled with the overcap and disguises the pump. The lower end of the cladding web 27 abuts the collar 13.
  • the piston 3 can be actuated via an overcap 5 which can be placed thereon and which surrounds the piston 3 like a cover.
  • the overcap 5 is connected in a snap-in manner to the collar 13 by means of a radially outwardly extending bead 29 which is integrally formed thereon. This latching connection prevents the pump from being released from the container 2 unintentionally.
  • the overcap 5 is provided with a recess which is designed to accommodate the cladding web 27.
  • the valve spring 4 has a lower plate 30 which can be placed sealingly on the base plate hole 14, an upper plate 31 which can be placed sealingly on a support projecting radially to the central axis 20 of the pump and two rod springs 32, 33 integrally molded between the lower plate 30 and the upper plate on.
  • the support is designed as an annular collar 34 which is formed on the inside of the piston neck 22 at its upper end.
  • the outer diameter or the dimensions of the base plate 30 is slightly smaller than the inner diameter of the base plate connector 17, so that the base plate 30 is easily movable relative to the base plate connector 17, but is simultaneously guided through the base plate connector 17.
  • the base plate top side has a film seal 59 which is arranged around the base plate hole 14 and is integrally formed on the base plate.
  • the top plate 31 is curved upwards.
  • the zenith of the curvature of the top plate 31 bears against the piston underside 21a.
  • the curvature clamps the top plate 31 between the underside of the piston 21a and the support. In this way, the top plate 31 seals with the support.
  • a tight pump chamber 35 is thus formed in the space between the lower plate 30 of the upper plate 31, the base plate connector 17 and the piston connector 22.
  • the outer diameter of the upper plate 31 is smaller than the inner diameter of the piston neck 22 in the area above the support. This ensures that the edge of the top plate 31 can stand out from the support when pressure develops within the pump chamber 35.
  • the medium when leaving the piston hole 23, the medium enters a channel 36 formed in the piston top 21b, which is designed to increase the flow rate of the medium.
  • the channel 36 is initially designed as an essentially semicircular curved path that adjoins the point 37 has its narrowest radius. Due to this configuration of the channel 36, the medium is accelerated by the centrifugal force.
  • the channel 36 has a deflection wall 38 which runs essentially perpendicular to the direction of flow of the medium flowing through the channel.
  • This deflection wall 38 causes droplets to form in liquid media, since the cohesion of the substance is partially overcome by the impact of the medium on the deflection wall 38.
  • the direction of flow of the medium is deflected downward by the deflection wall 38.
  • the medium now enters a linear region 39 formed inside the piston top 21b. Strictly speaking, this linear region 39 is partially formed in the piston top 21b and the underside of the overcap 5, which form the linear region 39 in the assembled state.
  • the cross section of the linear region 39 decreases towards the outlet opening 40 and has its smallest cross section at the outlet opening 40. The flow velocity of the medium is increased again by this configuration of the channel.
  • the outlet opening 40 is closed by a downwardly projecting sealing lip 41 which is integrally formed on the underside of the overcap 5. Due to the pressure of the medium when the pump is actuated, this elastic sealing lip is pressed to the side and allows the medium to escape. In addition, the sealing lip 41 again ensures atomization of liquid media.
  • the pump is shown in the discharge.
  • the compression spring 26 presses the piston 3 and the overcap 5 back into their starting position.
  • the lip seal 25 is again in a sealing manner - after it has emerged from the area of the air opening 28 - on the inside of the guide connector 18.
  • a negative pressure is created in the pump chamber 35.
  • This negative pressure raises the lower plate 30 so that medium is sucked out of the container 2 through the riser pipe 15 and sucked into the pump chamber 35.
  • the pump chamber 35 is filled and is ready for another pump cycle. If no medium is contained in the pump chamber 35 when it is used for the first time, it is initially filled by a few pump movements.
  • FIG. 1 An alternative embodiment of the pump is shown in FIG.
  • the construction of the pump basically corresponds to the pump shown in FIGS. 1 to 5.
  • the embodiment shown here is designed as a screw version.
  • the pump has an integral internal thread 42 on the inside of the container rim 9, which engages with an external thread 44 integrally molded on the outside of the container socket 8, which corresponds to the internal thread 42.
  • This embodiment also has one between the container edge and the base plate underside 6 arranged elastic sealing ring 45, which maintains the necessary bias to prevent accidental release of the pump from the container 2.
  • FIG. This essentially corresponds to the clamp version shown in FIGS. 1 to 5.
  • the pump is additionally provided with a covering cap 46.
  • This covering cap covers the overcap 5 and is preferably made of aluminum, which is particularly resistant to many media, such as e.g. Perfume, hairspray and the like. It is also inexpensive to manufacture.
  • the covering cap 46 is provided with a hole 47 through which the medium can exit unhindered. In order not to hinder the flow of the medium in any case, the hole 46 is preferably formed significantly larger than the outlet opening 40.
  • the pump can also be provided with a coupling ring 48 arranged on the outer sides of the container rim 9 and the piston rim 10 of the base plate 1, which preferably consists of the same material as the covering cap 46 and also serves to protect the pump from aggressive media and to improve the design ,
  • FIG. 7 A front view of the outlet opening 40 of the pump from FIG. 7 is shown in FIG.
  • the pump shown in FIGS. 9 and 10 represents an alternative embodiment of the pump as a lotion pump.
  • a lotion is a viscous medium which is not conveyed out of the pump under such high pressure and therefore does not have to be accelerated.
  • atomization is not necessary.
  • the pump can also be used for other viscous media.
  • the piston 49 is provided with a piston hole 51 arranged offset from the longitudinal axis 50 of the pump. This is located in the area of the piston cover 52, which is positioned within the piston socket 53 which is integrally formed on the underside of the piston 49.
  • the lotion from the pump chamber 54 enters the channel 56 formed between the underside of the overcap 55 and the top of the piston 49.
  • This channel leads the lotion directly to the outlet opening, which is designed as a slot nozzle, without an acceleration chamber.
  • the abutting areas of the overcap 55 and the piston 49 are formed such that a fine slot nozzle is formed between them.
  • the channel 56 runs towards the slot 57 of the slot nozzle essentially conically.
  • the slotted nozzle is closed when the pump is not in operation, so that no bacteria can penetrate and the lotion is protected from drying out.
  • the slot 57 is slightly opened by the internal pressure of the lotion and allows it to escape.
  • the configuration of the slot nozzle according to the invention is considerably cheaper than that known from the prior art, in which very narrow manufacturing tolerances have to be observed in the transition region from the overcap to the slot nozzle formed in one piece, which make the production very complex and cost-intensive.
  • a steel core with a diameter of 0.75 mm is required for spraying the plastic parts.
  • the slot nozzle is formed by assembling two prefabricated parts.
  • a film seal 58 is integrally formed around the channel 56 and the piston hole 51 on the underside of the overcap 55, which is to be placed on the Top of the piston 49 comes.
  • Such film seals can also be provided in the embodiment according to FIG. 1.
  • the riser pipe 15 can also be pushed onto the riser pipe socket 16 from the outside.
  • FIG. 9 A front view of the pump from FIG. 9 looking in the direction of the slot nozzle is shown in FIG.
  • all of the embodiments are essentially rotationally symmetrical cylindrical embodiments which are rotationally symmetrical about the longitudinal axis 20 of the pump. It is also within the scope of the invention to design certain components offset from the center line 20 of the pump, that is to say not to make the pump and the container 2 rotationally symmetrical, and to provide other geometries.
  • the individual plastic components are preferably sharpened, so that their manufacture is particularly simple and inexpensive.
  • the components can also be partially made of metal or other suitable materials, provided that the elasticity of the plastic is not required.
  • the design of the pump according to the invention significantly simplifies its construction. Compared to the prior art, only three or four parts are required instead of eight or more parts previously.
  • the construction according to the invention reduces the overall height, so that the pump is completely in the area can be arranged above the base plate. This enables use on containers with a small and limited opening cross-section. All that is really needed is an opening cross-section of the container that is sufficient to pass a riser pipe. Since all components of the pump can be injection molded from a single plastic, production is particularly simple and inexpensive. Disposal is also made easier.
  • the pump can be operated with and without a cap.
  • the inventive design of the channel as an acceleration chamber can be dispensed with additional nozzles for accelerating and atomizing liquid media. In the prior art, these nozzles represent expensive individual parts.
  • the container is expediently made of an elastic material.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Closures For Containers (AREA)
  • Fluid-Driven Valves (AREA)
  • Eye Examination Apparatus (AREA)
  • Reciprocating Pumps (AREA)

Claims (18)

  1. Pompe pour milieux fluides, en particulier pompe à cosmétiques, avec une plaque de base (1) pouvant être fixée à un récipient, plaque qui présente dans l'état monté une face inférieure de plaque de base orientée vers le récipient et une face supérieure de plaque de base orientée de l'autre côté du récipient, et qui est dotée d'un trou de plaque de base (14) pour le passage d'un milieu contenu dans le récipient, la face supérieure de la plaque de base présentant une tubulure de plaque de base (17) disposée autour du trou de plaque de base, qui est conformé en vue de recevoir un dispositif de pompe, qui présente un piston (3, 49) avec un couvercle de piston (21) pouvant être tendu par au moins un ressort de compression (26) qui s'appuie contre la plaque de base, le piston comprenant une face inférieure de piston orientée vers le récipient et une face supérieure de piston orientée de l'autre côté du récipient et un trou de piston pour le milieu, la face inférieure du piston présentant une tubulure de piston (22, 53), agissant avec la tubulure de plaque de base (17) comme étanchement et mobile essentiellement axialement, caractérisée en ce que le dispositif de pompe présente un ressort de soupape (4) qui est doté d'une plaque inférieure (30) pouvant être placée comme étanchement sur le trou de plaque de base (14) et d'une plaque supérieure (31), qui peut être placée comme étanchement sur un rebord de la tubulure du piston (22), rebord saillant essentiellement radialement par rapport à l'axe médian (20, 50) de la pompe, tandis que la plaque inférieure (30) et la plaque supérieure (31) sont reliées par au moins un élément élastique.
  2. Pompe selon la revendication 1, caractérisée en ce que le ressort de compression (26) entre la face inférieure du piston (21a) et la face supérieure de la plaque de base (7) est disposé sur les côtés de la tubulure de piston (22, 53) et de la tubulure de plaque de base (17) détournés de l'axe médian (20, 50) de la pompe.
  3. Pompe selon la revendication 2, caractérisée en ce que le ressort de compression (26) est venu d'une pièce avec le piston (3, 49).
  4. Pompe selon l'une des revendications 1 à 3, caractérisée en ce que la face supérieure de la plaque de base (7) présente une tubulure de guidage (18) qui est disposée à une distance de la tubulure de plaque de base (17) dans la direction détournée de l'axe médian (20, 50) de la pompe, et en ce que la tubulure de piston (22, 53) prend entre la tubulure de guidage (18) et la tubulure de plaque de base (17).
  5. Pompe selon l'une des revendications 1 à 4, caractérisée en ce que la tubulure de plaque de base (17) présente un joint à lèvre (24), qui repose pour étanchement contre la face intérieure de la tubulure de piston (22, 53).
  6. Pompe selon l'une des revendications 4 ou 5, caractérisée en ce que la tubulure de piston (22, 53) présente un joint à lèvre (25) qui peut reposer pour étanchement contre la face intérieure de la tubulure de guidage (18).
  7. Pompe selon l'une des revendications 1 à 6, conformée comme pompe aspirante d'air et présentant au moins un orifice d'entrée pour l'air ambiant, caractérisée en ce que la plaque de base (1) présente du côté de la tubulure de plaque de base (17) détourné du trou de plaque de base (14) un orifice pour l'air (28), par lequel l'air peut pénétrer dans le récipient (2).
  8. Pompe selon la revendication 7, caractérisée en ce que l' orifice pour l'air (28) est disposé entre la tubulure de plaque de base (17) et la tubulure de guidage (18).
  9. Pompe selon l'une des revendications 1 à 8, qui présente un canal pratiqué sur le piston pour extraire le milieu de la pompe par un orifice de sortie, caractérisée en ce que le canal (36) est formé de façon à accélérer la vitesse d'écoulement du milieu.
  10. Pompe selon la revendication 9, caractérisée en ce que le canal (36) est formé dans le couvercle de piston (21) et présente au moins une zone annulaire, laquelle présente en au moins un endroit un rayon rétréci (37).
  11. Pompe selon la revendication 9, caractérisée en ce que le canal présente une zone linéaire (39), la section de la zone linéaire (39) diminuant dans le sens de l'écoulement du milieu.
  12. Pompe selon l'une des revendications 9 à 11, caractérisée en ce que le canal présente une paroi de détournement (38), qui est essentiellement perpendiculaire à la direction de l'écoulement du milieu qui s'écoule dans le canal (36).
  13. Pompe selon l'une des revendications 9 à 12, qui peut être actionnée par un capuchon de recouvrement pouvant venir coiffer le piston, caractérisée en ce que le canal est pratiqué au moins en partie dans le capuchon de recouvrement (5, 55), de telle sorte que le canal (36) est formé entre le capuchon de recouvrement (5, 55) et le piston (3, 49).
  14. Pompe selon la revendication 13, caractérisée en ce que le capuchon de recouvrement présente une lèvre d'étanchéité élastique (41) disposée à l'orifice de sortie (40), qui obture l'orifice de sortie (40) quand la pompe n'est pas utilisée.
  15. Pompe selon la revendication 13, caractérisée en ce que cette dernière est conformée comme pompe à lotion et en ce que le piston (3, 49) et le capuchon de recouvrement (5, 55) forment au niveau de l'orifice de sortie (40) une buse en forme de fente par leurs parties reposant l'une sur l'autre.
  16. Pompe selon l'une des revendications 1 à 15, caractérisée en ce que la plaque inférieure (30) et la plaque supérieure (31) sont reliées ensemble par au moins un ressort en barreau (32, 33), venu en une pièce avec la plaque inférieure (30) et avec la plaque supérieure (31).
  17. Pompe selon la revendication 16, caractérisée en ce que le ressort de soupape(4) présente deux ressorts en barreau, décalés l'un de l'autre et qui sont venus en une pièce avec la plaque supérieure (31).
  18. Pompe selon l'une des revendications 1 à 17, caractérisée en ce que la plaque supérieure (31) présente un diamètre extérieur plus petit que le diamètre intérieur de la tubulure de piston (22, 53) dans la zone au-dessus du rebord et en ce que la plaque supérieure (31) est bombée du côté opposé à la plaque de base (1).
EP97948681A 1996-11-04 1997-10-27 Pompe Expired - Lifetime EP0934123B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19645393 1996-11-04
DE19645393A DE19645393C1 (de) 1996-11-04 1996-11-04 Pumpe
PCT/DE1997/002508 WO1998019796A1 (fr) 1996-11-04 1997-10-27 Pompe

Publications (2)

Publication Number Publication Date
EP0934123A1 EP0934123A1 (fr) 1999-08-11
EP0934123B1 true EP0934123B1 (fr) 2003-01-29

Family

ID=7810597

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97948681A Expired - Lifetime EP0934123B1 (fr) 1996-11-04 1997-10-27 Pompe

Country Status (9)

Country Link
US (1) US6186369B1 (fr)
EP (1) EP0934123B1 (fr)
JP (1) JP2001508351A (fr)
AT (1) ATE231744T1 (fr)
AU (1) AU7001398A (fr)
BR (1) BR9712861A (fr)
CA (1) CA2270936C (fr)
DE (2) DE19645393C1 (fr)
WO (1) WO1998019796A1 (fr)

Families Citing this family (18)

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Publication number Priority date Publication date Assignee Title
FR2802187B1 (fr) * 1999-12-13 2002-02-22 Techniplast Dispositif de distribution d'un produit, comportant un flacon loge dans un recipient
FR2806933B1 (fr) * 2000-03-31 2003-04-11 Oreal Bouton-poussoir a effet ressort
DE10017340A1 (de) * 2000-04-07 2001-10-18 Rosenthal Karl Heinz Pumpe
FR2809714B1 (fr) * 2000-05-31 2002-12-06 Valois Sa Distributeur a organe de fixation a etancheite peripherique
FR2815617B1 (fr) * 2000-10-23 2003-02-14 Valois Sa Distributeur de produit fluide
US20050133539A1 (en) * 2003-12-22 2005-06-23 Valois Sas Fluid dispenser member
US7740154B2 (en) * 2007-01-12 2010-06-22 The Clorox Company Bottle Fitment
US8376192B2 (en) * 2008-03-24 2013-02-19 Mary Kay Inc. Apparatus for dispensing fluids using a press-fit diptube
USD636668S1 (en) 2008-03-24 2011-04-26 Mary Kay Inc. Dip tubes
US9789502B2 (en) 2008-06-05 2017-10-17 Mary Kay Inc. Apparatus for dispensing fluids using a removable bottle
GB201017662D0 (en) * 2009-12-23 2010-12-01 Leafgreen Ltd Small manual fluid trigger dispenser
FR2961192B1 (fr) * 2010-06-10 2012-07-27 Rexam Healthcare La Verpillier Dispositif de distribution de produit comprenant une pompe et un embout de distribution
MX2013004380A (es) * 2010-10-20 2013-12-06 Meadwestvaco Calmar Inc Mecanismos de bomba de precompresion.
US20150090741A1 (en) * 2012-03-23 2015-04-02 Ddps Global, Llc Compression Spring and Pump for Dispensing Fluid
CN102606444B (zh) * 2012-04-16 2014-11-05 宁波卡帝亚电器有限公司 一种水电分离自吸泵
EP2873465A1 (fr) * 2013-11-18 2015-05-20 Sulzer Mixpac AG Piston pour distribuer un fluide d'une cartouche
USD717666S1 (en) 2014-03-14 2014-11-18 The Clorox Company Fluid dispenser
CN111959940B (zh) * 2020-07-24 2024-05-07 中山市联昌喷雾泵有限公司 一种主柱和活塞一体成型的全塑乳液泵

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DE2902624C2 (de) * 1979-01-24 1985-10-10 Pfeiffer Zerstäuber Vertriebsgesellschaft mbH & Co KG, 7760 Radolfzell Ausgabepumpe
US4410107A (en) * 1981-12-18 1983-10-18 Corsette Douglas Frank Liquid dispensing pump
DE3310029A1 (de) * 1983-03-19 1984-09-20 Gebr. Jordan GmbH & Co KG, 5860 Iserlohn Dosierspenderpumpe fuer fluessigkeiten
US4640443A (en) * 1983-06-08 1987-02-03 Corsette Douglas Frank Manually operated dispensing pump
EP0282595B1 (fr) * 1986-07-31 1991-04-03 Pentel Kabushiki Kaisha Mecanisme de refoulement de fluide
DE29504817U1 (de) * 1995-03-22 1995-11-09 Piepenstock, Friedhelm, 99842 Ruhla Schraubendruckfeder

Also Published As

Publication number Publication date
ATE231744T1 (de) 2003-02-15
JP2001508351A (ja) 2001-06-26
WO1998019796A1 (fr) 1998-05-14
DE19645393C1 (de) 1998-02-05
CA2270936A1 (fr) 1998-05-14
BR9712861A (pt) 1999-12-07
CA2270936C (fr) 2003-03-18
AU7001398A (en) 1998-05-29
DE59709241D1 (de) 2003-03-06
EP0934123A1 (fr) 1999-08-11
US6186369B1 (en) 2001-02-13

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