EP1380352A1 - Dispenser pump - Google Patents

Dispenser pump Download PDF

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Publication number
EP1380352A1
EP1380352A1 EP03015143A EP03015143A EP1380352A1 EP 1380352 A1 EP1380352 A1 EP 1380352A1 EP 03015143 A EP03015143 A EP 03015143A EP 03015143 A EP03015143 A EP 03015143A EP 1380352 A1 EP1380352 A1 EP 1380352A1
Authority
EP
European Patent Office
Prior art keywords
housing
piston
valve
suction
housing portion
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
Application number
EP03015143A
Other languages
German (de)
French (fr)
Other versions
EP1380352B1 (en
Inventor
Ettore Masuzzo
Stefan Christ
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.)
Aero Pump GmbH
Original Assignee
Aero Pump GmbH
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 Aero Pump GmbH filed Critical Aero Pump GmbH
Publication of EP1380352A1 publication Critical patent/EP1380352A1/en
Application granted granted Critical
Publication of EP1380352B1 publication Critical patent/EP1380352B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • B05B11/1094—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 having inlet or outlet valves not being actuated by pressure or having no inlet or outlet valve
    • 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
    • B05B11/0059—Components or details allowing operation in any orientation, e.g. for discharge in inverted position
    • 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
    • B05B11/104—Pressure accumulation pumps, i.e. pumps comprising a pressure accumulation chamber the outlet valve being opened by pressure after a defined accumulation 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
    • B05B11/1042—Components or details
    • B05B11/1066—Pump inlet valves
    • B05B11/107—Gate valves; Sliding 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
    • B05B11/01—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
    • B05B11/1066—Pump inlet valves
    • B05B11/1067—Pump inlet valves actuated by pressure

Definitions

  • the invention relates to a suction-pressure pump for ejecting a product from a container, with a housing in which an axially drilled piston Sealed axially via a first housing section is displaceable, with a piston bore continuing hollow piston rod, which is in an opening of a Closing hood of housing and container movable is and on its free end a tightly fastened Actuating head, by the actuation of the Piston against the force of a return spring to an am Housing provided connection piece for a dip tube is pressed while in a pressure chamber of the housing builds up a pressure, which is a first valve closure piece in the connecting piece against a first valve seat presses, the actuator head of a to the Bore subsequent outlet channel via a check valve up to an ejection opening for the product is interspersed with at least one opening in one second housing portion between the first housing portion and the closure hood.
  • a known suction-pressure pump of this type (DE 27 09 796 B2) can indeed in upright normal position, in the Actuator head is higher than the connection piece, suck in the product from the container as well spend by a pressure stroke.
  • a reverse Attitude i. Overhead posture
  • the product could however not be sucked out of the container as soon as the level in the container in the overhead pose deeper as the suction opening of the dip tube (also called "suction tube”) called) is located.
  • the product issue would be in the Overhead posture only possible if previously in normal posture a suction stroke was performed.
  • the invention is therefore based on the object, a Specify suction-pressure pump of the type mentioned, which also in an overhead attitude at a level of the product in the container, which is lower than the suction port the immersion tube is the product of the Can suck in and spend container.
  • this object is achieved in that the piston in the unactuated state under the return spring force a passage between the pressure chamber and the or each opening in the second housing section releases and the connecting piece a second valve seat and a second valve closure piece, the in an attitude of suction-pressure pump, in which the actuator head lower than the connecting piece is, assumes its closed position on the second valve seat and in a reverse attitude, in which the actuator head higher than the connecting piece is, its opening position occupies.
  • the product is in an overhead posture over the opening or openings in the housing wall and the passage during the suction stroke of the pump in sucked in the pressure chamber, and then during the pressure stroke to be issued.
  • the suction pressure pump can therefore both upright and upside down Aspirate and dispense the product.
  • the illustrated suction-pressure pump 1 is on the edge the opening of a container 2 over an intermediate arranged sealing ring 3 tightly fastened.
  • the Suction-pressure pump 1 has a hollow cylindrical housing 4, the lower end by a check valve with a first valve closure piece 5 in the form of a ball can be locked.
  • the valve closure piece 5 is seated in his illustrated in Fig. 1 lower layer on a Valve seat 6 tight.
  • In the housing 4 is a hollow cylindrical piston 7, against the inside of the Housing 4 sealed in a first housing portion 4a, axially displaceable.
  • the bore of the piston 7th is set in a piston 7 integrally formed on the hollow piston rod 9 continues.
  • the piston rod 9 is in an opening 10 an upper closure cap 11 of the housing. 4 and container 2 sealed displaced.
  • Piston rod 9 On the free end of the protruding from the housing 4 Piston rod 9 is an actuating head 12 of the suction-pressure pump 1 tight and firmly attached.
  • the operating head 12 passes through an outlet 13, which is at the hole 8 connects.
  • the outlet 13 is set via a check valve 14 with a valve closure piece 15 and a return spring 16 to an ejection opening 17 in an insert 18, the one in the Ejection opening 17 has vortexing vortex chamber, continued.
  • the valve closure piece 15 is made of rubber-elastic Material, here an elastomer, and has a cylindrical Body, which is about in its axial center surrounded by a sealing lip 19.
  • the sealing lip is below one caused by its inherent elasticity Spring force on the inside of a coaxial with the Piston rod 9 extending first portion of the outlet channel 13 and locks in the unactuated state of the actuating head 12 extending transversely to the first second section of the outlet 13th
  • the piston 7 is in its unactuated position after the Fig. 1 and 2 with a circumferential at its free end Sealing lip 20 closely to the inside of the housing. 4 at.
  • a surrounding the piston 7 above the sealing lip 20 Bund 21 serves to guide the piston during his movement, but leaves a game between them and the inside of the housing 4 free.
  • a return spring 22, which is shown interrupted, is supported on the one hand in the piston 7 at the bottom of an annular space 23, the from the outer wall of the piston 7 and a pipe socket 24 is limited, and on the other hand on a shoulder 25 in the housing 4 from.
  • the housing 4 has the lower in Fig.
  • valve head 12 Upon actuation of the valve head 12 at the in 4 illustrated attitude of the suction-pressure pump 1, until the sealing lip 20 exceeds the gradation 27, in turn, in turn, the first valve closure member. 5 pressed against his seat 6 and the product 36 from the Pressure chamber 26 via the bore 8, which now opened again Valve 14 and the outlet channel 13 ejected.
  • the suction-pressure pump 1 can therefore be in any Holding suction and pressure strokes until the container is emptied 2 execute.
  • a modification of the illustrated embodiment may for example be that the grooves 33rd omitted and instead the openings 32 to the lower end in Fig. 1 of the grooves 33 are extended. The passage would then in the position of the piston. 7 2 released directly through the openings 32.
  • the grooves 33 have the advantage that the housing portion 4c remains stable and hardening its plastic mass in the production not worth mentioning warps, as in the housing section 4c reaching openings 32 could be the case. Between the housing 4 and the piston 7 is therefore on the entire piston stroke ensures intimate contact.

Landscapes

  • Closures For Containers (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Massaging Devices (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Reciprocating Pumps (AREA)

Abstract

Double-acting pump (1) comprises a piston (7) which in the non-operated state releases, under a restoring spring force, an outlet (33) between a pressure chamber (26) and an opening (32) in a housing section (4b). A connecting piece (28) has a valve seat (31) and a valve-closing part (30) which adopts a closing position on the valve seat when the pump is held so that the operating head (12) is lower than the connecting piece and an opening position when the pump is held the other way round. Preferred Features: The valve-closing part is operated under its own weight.

Description

Die Erfindung bezieht sich auf eine Saug-Druck-Pumpe zum Ausspritzen eines Produkts aus einem Behältnis, mit einem Gehäuse, in dem ein axial durchbohrter Kolben über einen ersten Gehäuseabschnitt abgedichtet axial verschiebbar ist, mit einer die Kolbenbohrung fortsetzenden hohlen Kolbenstange, die in einer Öffnung einer Verschlußhaube von Gehäuse und Behältnis verschiebbar ist und auf ihrem freien Ende einen dicht befestigten Betätigungskopf aufweist, durch dessen Betätigung der Kolben gegen die Kraft einer Rückstellfeder zu einem am Gehäuse vorgesehenen Anschlußstutzen für ein Tauchrohr gedrückt wird und dabei in einem Druckraum des Gehäuses einen Druck aufbaut, der ein erstes Ventilverschlußstück im Anschlußstutzen gegen einen ersten Ventilsitz drückt, wobei der Betätigungskopf von einem sich an die Bohrung anschließenden Auslaßkanal über ein Rückschlagventil bis zu einer Ausspritzöffnung für das Produkt durchsetzt ist, mit wenigstens einer Öffnung in einem zweiten Gehäuseabschnitt zwischen dem ersten Gehäuseabschnitt und der Verschlußhaube.The invention relates to a suction-pressure pump for ejecting a product from a container, with a housing in which an axially drilled piston Sealed axially via a first housing section is displaceable, with a piston bore continuing hollow piston rod, which is in an opening of a Closing hood of housing and container movable is and on its free end a tightly fastened Actuating head, by the actuation of the Piston against the force of a return spring to an am Housing provided connection piece for a dip tube is pressed while in a pressure chamber of the housing builds up a pressure, which is a first valve closure piece in the connecting piece against a first valve seat presses, the actuator head of a to the Bore subsequent outlet channel via a check valve up to an ejection opening for the product is interspersed with at least one opening in one second housing portion between the first housing portion and the closure hood.

Eine bekannte Saug-Druck-Pumpe dieser Art (DE 27 09 796 B2) kann zwar in aufrechter Normalhaltung, in der der Betätigungskopf höher als der Anschlußstutzen liegt, das Produkt aus dem Behältnis sowohl ansaugen als auch durch einen Druckhub ausgeben. In einer umgekehrten Haltung, d.h. Überkopf-Haltung, könnte das Produkt jedoch nicht aus dem Behältnis angesaugt werden, sobald der Füllstand im Behältnis in der Überkopf-Haltung tiefer als die Ansaugöffnung des Tauchrohrs (auch "Saugrohr" genannt) liegt. Die Produktausgabe wäre in der Überkopf-Haltung nur möglich, wenn zuvor in der Normalhaltung ein Saughub ausgeführt wurde.A known suction-pressure pump of this type (DE 27 09 796 B2) can indeed in upright normal position, in the Actuator head is higher than the connection piece, suck in the product from the container as well spend by a pressure stroke. In a reverse Attitude, i. Overhead posture, the product could however not be sucked out of the container as soon as the level in the container in the overhead pose deeper as the suction opening of the dip tube (also called "suction tube") called) is located. The product issue would be in the Overhead posture only possible if previously in normal posture a suction stroke was performed.

Der Erfindung liegt daher die Aufgabe zugrunde, eine Saug-Druck-Pumpe der eingangs genannten Art anzugeben, die auch in einer Überkopf-Haltung bei einem Füllstand des Produkts im Behältnis, der niedriger als die Ansaugöffnung des Tauchrohrs liegt, das Produkt aus dem Behältnis ansaugen und ausgeben kann.The invention is therefore based on the object, a Specify suction-pressure pump of the type mentioned, which also in an overhead attitude at a level of the product in the container, which is lower than the suction port the immersion tube is the product of the Can suck in and spend container.

Erfindungsgemäß ist diese Aufgabe dadurch gelöst, daß der Kolben im unbetätigten Zustand unter der Rückstellfederkraft einen Durchlaß zwischen dem Druckraum und der oder jeder Öffnung im zweiten Gehäuseabschnitt freigibt und der Anschlußstutzen einen zweiten Ventilsitz und ein zweites Ventilverschlußstück aufweist, das bei einer Haltung der Saug-Druck-Pumpe, in der der Betätigungskopf tiefer als der Anschlußstutzen liegt, seine Schließlage am zweiten Ventilsitz einnimmt und bei einer umgekehrten Haltung, in der der Betätigungskopf höher als der Anschlußstutzen liegt, seine Öffnungslage einnimmt.According to the invention, this object is achieved in that the piston in the unactuated state under the return spring force a passage between the pressure chamber and the or each opening in the second housing section releases and the connecting piece a second valve seat and a second valve closure piece, the in an attitude of suction-pressure pump, in which the actuator head lower than the connecting piece is, assumes its closed position on the second valve seat and in a reverse attitude, in which the actuator head higher than the connecting piece is, its opening position occupies.

Bei dieser Lösung wird das Produkt bei einer Überkopf-Haltung über die Öffnung oder Öffnungen in der Gehäusewand und den Durchlaß während des Saughubs der Pumpe in den Druckraum angesaugt, um dann während des Druckhubs ausgegeben zu werden. Die Saug-Druck-Pumpe kann daher sowohl in aufrechter Haltung als auch in Kopfüber-Haltung das Produkt ansaugen und ausgeben.In this solution, the product is in an overhead posture over the opening or openings in the housing wall and the passage during the suction stroke of the pump in sucked in the pressure chamber, and then during the pressure stroke to be issued. The suction pressure pump can therefore both upright and upside down Aspirate and dispense the product.

Vorzugsweise ist dafür gesorgt, daß der Durchlaß durch wenigstens eine axiale Nut in der Innenseite eines mittleren Gehäuseabschnitts zwischen dem ersten und dem zweiten Gehäuseabschnitt gebildet ist.Preferably, it is ensured that the passage through at least one axial groove in the inside of a middle housing portion between the first and the second housing portion is formed.

Ferner kann das zweite Ventilverschlußstück unter seinem Eigengewicht betätigbar sein.Further, the second valve closure piece under his Dead weight be actuated.

Die Erfindung und ihre Weiterbildungen werden nachstehend anhand der beiliegenden Zeichnungen eines bevorzugten Ausführungsbeispiels näher beschrieben. Darin stellen dar:

Fig. 1
einen Axialschnitt durch eine erfindungsgemäße Saug-Druck-Pumpe und ein Behältnis, bevor dieses mit einem auszugebenden Produkt gefüllt worden ist,
Fig. 2
den gleichen Axialschnitt wie den nach Fig. 1, bei dem das Behältnis und die Pumpe das auszugebende Produkt enthalten,
Fig. 3
die gleiche Schnittansicht wie die nach Fig. 2, jedoch bei betätigter Saug-Druck-Pumpe in aufrechter Normalhaltung von Pumpe und Behältnis,
Fig. 4
den gleichen Axialschnitt wie den nach Fig. 3, jedoch in einer Kopfüber-Haltung.
The invention and its developments are described below with reference to the accompanying drawings of a preferred embodiment. In it represent:
Fig. 1
an axial section through a suction-pressure pump according to the invention and a container before it has been filled with a product to be dispensed,
Fig. 2
the same axial section as that of FIG. 1, in which the container and the pump contain the product to be dispensed,
Fig. 3
the same sectional view as that of FIG. 2, but with actuated suction-pressure pump in upright maintenance of the pump and container,
Fig. 4
the same axial section as that of FIG. 3, but in a head-over-attitude.

Die dargestellte Saug-Druck-Pumpe 1 ist auf dem Rand der Öffnung eines Behältnisses 2 über eine dazwischen angeordnete Dichtringscheibe 3 dicht befestigt. Die Saug-Druck-Pumpe 1 hat ein hohlzylindrisches Gehäuse 4, dessen unteres Ende durch ein Rückschlagventil mit einem ersten Ventilverschlußstück 5 in Form einer Kugel absperrbar ist. Das Ventilverschlußstück 5 sitzt in seiner in Fig. 1 dargestellten unteren Lage auf einem Ventilsitz 6 dicht auf. In dem Gehäuse 4 ist ein hohlzylindrischer Kolben 7, gegen die Innenseite des Gehäuses 4 in einem ersten Gehäuseabschnitt 4a abgedichtet, axial verschiebbar. Die Bohrung des Kolbens 7 setzt sich in einer am Kolben 7 angeformten hohlen Kolbenstange 9 fort. Die Kolbenstange 9 ist in einer Öffnung 10 einer oberen Verschlußhaube 11 von Gehäuse 4 und Behältnis 2 abgedichtet verschiebbar.The illustrated suction-pressure pump 1 is on the edge the opening of a container 2 over an intermediate arranged sealing ring 3 tightly fastened. The Suction-pressure pump 1 has a hollow cylindrical housing 4, the lower end by a check valve with a first valve closure piece 5 in the form of a ball can be locked. The valve closure piece 5 is seated in his illustrated in Fig. 1 lower layer on a Valve seat 6 tight. In the housing 4 is a hollow cylindrical piston 7, against the inside of the Housing 4 sealed in a first housing portion 4a, axially displaceable. The bore of the piston 7th is set in a piston 7 integrally formed on the hollow piston rod 9 continues. The piston rod 9 is in an opening 10 an upper closure cap 11 of the housing. 4 and container 2 sealed displaced.

Auf dem freien Ende der aus dem Gehäuse 4 herausragenden Kolbenstange 9 ist ein Betätigungskopf 12 der Saug-Druck-Pumpe 1 dicht und fest aufgesetzt. Den Betätigungskopf 12 durchsetzt ein Auslaßkanal 13, der sich an die Bohrung 8 anschließt. Der Auslaßkanal 13 setzt sich über ein Rückschlagventil 14 mit einem Ventilverschlußstück 15 und einer Rückstellfeder 16 bis zu einer Ausspritzöffnung 17 in einem Einsatz 18, der eine in die Ausspritzöffnung 17 mündende Wirbelkammer aufweist, fort.On the free end of the protruding from the housing 4 Piston rod 9 is an actuating head 12 of the suction-pressure pump 1 tight and firmly attached. The operating head 12 passes through an outlet 13, which is at the hole 8 connects. The outlet 13 is set via a check valve 14 with a valve closure piece 15 and a return spring 16 to an ejection opening 17 in an insert 18, the one in the Ejection opening 17 has vortexing vortex chamber, continued.

Das Ventilverschlußstück 15 besteht aus gummielastischem Material, hier einem Elastomer, und hat einen zylindrischen Körper, der etwa in seiner axialen Mitte von einer Dichtlippe 19 umgeben ist. Die Dichtlippe liegt unter einer durch ihre Eigenelastizität bewirkten Federkraft an der Innenseite eines sich koaxial zur Kolbenstange 9 erstreckenden ersten Abschnitts des Auslaßkanals 13 an und versperrt im unbetätigten Zustand des Betätigungskopfes 12 einen sich quer zum ersten erstreckenden zweiten Abschnitt des Auslaßkanals 13.The valve closure piece 15 is made of rubber-elastic Material, here an elastomer, and has a cylindrical Body, which is about in its axial center surrounded by a sealing lip 19. The sealing lip is below one caused by its inherent elasticity Spring force on the inside of a coaxial with the Piston rod 9 extending first portion of the outlet channel 13 and locks in the unactuated state of the actuating head 12 extending transversely to the first second section of the outlet 13th

Der Kolben 7 liegt in seiner unbetätigten Lage nach den Fig. 1 und 2 mit einer an seinem freien Ende umlaufenden Dichtlippe 20 eng an der Innenseite des Gehäuses 4 an. Ein den Kolben 7 oberhalb der Dichtlippe 20 umgebender Bund 21 dient der Führung des Kolbens während seiner Bewegung, läßt jedoch ein Spiel zwischen sich und der Innenseite des Gehäuses 4 frei. Eine Rückstellfeder 22, die unterbrochen dargestellt ist, stützt sich einerseits im Kolben 7 am Boden eines Ringraums 23, der von der äußeren Wand des Kolbens 7 und einem Rohrstutzen 24 begrenzt ist, und andererseits an einer Schulter 25 im Gehäuse 4 ab. Das Gehäuse 4 hat am in Fig. 1 unteren Ende eines durch das Gehäuse 4 begrenzten Druckraums 26 eine Abstufung 27, unterhalb der der Innendurchmesser des Gehäuses 4 etwas größer als der Außendurchmesser der Dichtlippe 20 des Kolbens ist. In einem Anschlußstutzen 28 am freien unteren Ende des Gehäuses 4 ist ein bis nahe an den Boden des Behältnisses 2 reichendes Tauchrohr 29 befestigt. Im Anschlußstutzen 28 zwischen dem inneren Ende des Tauchrohrs 29 und dem Ventilsitz 6 ist ein zweites Ventilverschlußstück 30 in Form einer Kugel axial verschiebbar gelagert, das mit einem zweiten Ventilsitz 31 im Anschlußstutzen 28 zusammenwirkt und ebenso wie das erste Ventilverschlußstück 5 unter seinem Eigengewicht betätigbar ist. Das durch das erste Ventilverschlußstück 5 und den ersten Ventilsitz 6 gebildete Rückschlagventil schließt und öffnet entgegengesetzt zu dem durch das zweite Ventilverschlußstück 30 und den zweiten Ventilsitz 31 gebildeten Rückschlagventil.The piston 7 is in its unactuated position after the Fig. 1 and 2 with a circumferential at its free end Sealing lip 20 closely to the inside of the housing. 4 at. A surrounding the piston 7 above the sealing lip 20 Bund 21 serves to guide the piston during his movement, but leaves a game between them and the inside of the housing 4 free. A return spring 22, which is shown interrupted, is supported on the one hand in the piston 7 at the bottom of an annular space 23, the from the outer wall of the piston 7 and a pipe socket 24 is limited, and on the other hand on a shoulder 25 in the housing 4 from. The housing 4 has the lower in Fig. 1 End of a limited by the housing 4 pressure chamber 26 a gradation 27, below the inside diameter of the housing 4 is slightly larger than the outer diameter the sealing lip 20 of the piston is. In one Connecting piece 28 at the free lower end of the housing 4 is a reaching almost to the bottom of the container 2 Immersion tube 29 attached. In connection piece 28 between the inner end of the dip tube 29 and the Valve seat 6 is a second valve closure piece 30 in FIG Shape of a ball mounted axially displaceable, with a second valve seat 31 in the connecting piece 28 cooperates and as well as the first valve plug 5 is operable under its own weight. The through the first valve closure piece 5 and the first Valve seat 6 formed check valve closes and opens opposite to that through the second valve plug 30 and the second valve seat 31 formed Check valve.

Oberhalb der in Fig. 1 und 2 dargestellten oberen Endlage des Kolbens 7 sind in einem zweiten Abschnitt 4b des Gehäuses 4, der an der Verschlußhaube 11 angrenzt, vier gleichmäßig über den Gehäuseumfang verteilte schlitzförmige Öffnungen 32 ausgebildet, die den Innenraum des Gehäuses 4 mit dem Innenraum des Behältnisses 2 oberhalb des maximalen Füllstands des im Behältnis 2 enthaltenen Produkts in der aufrechten Haltung nach Fig. 2 verbinden. Grundsätzlich würde jedoch nur eine Öffnung 32 genügen. Im unbetätigten Zustand gibt der Kolben 7 unter der Kraft der Rückstellfeder 22 einen Durchlaß 33 in Form axialer Nuten in der Innenseite eines mittleren Gehäuseabschnitts 4c zwischen dem ersten Gehäuseabschnitt 4a und dem zweiten Gehäuseabschnitt 4b frei. Auch hier würde nur eine Nut 33 in dem mittleren Gehäuseabschnitt 4c ausreichen. Above the upper end position shown in Fig. 1 and 2 of the piston 7 are in a second section 4b of the housing 4, which is adjacent to the closure cap 11, Four evenly distributed over the housing circumference slit-shaped openings 32 are formed, which the interior the housing 4 with the interior of the container 2 above the maximum level of the container in the second contained product in the upright posture Fig. 2 connect. Basically, however, only one would Opening 32 suffice. In the unactuated state of the Piston 7 under the force of the return spring 22 a Passage 33 in the form of axial grooves in the inside of a middle housing portion 4c between the first Housing portion 4a and the second housing portion 4b free. Again, only one groove would be 33 in the middle Be sufficient housing section 4c.

Bei der erstmaligen Betätigung des Betätigungskopfes 12 durch manuelle Ausübung eines Drucks auf seine mit einer Riffelung 34 versehene Oberseite bewegt sich der Kolben 7 gegen die Kraft der Rückstellfeder 22 in dem Raum 26 in der aufrechten Haltung nach den Fig. 2 und 3 in Richtung auf den Anschlußstutzen 28 nach unten. Durch den dabei im Raum 26, in der Bohrung 8 und im Auslaßkanal 13 entstehenden Luftdruck wird einerseits das Rückschlagventil 5, 6 geschlossen gehalten und andererseits die Dichtlippe 19 des Ventilverschlußstücks 15 dicht an die Innenseite des ersten Abschnitts des Auslaßkanals 13 gedrückt, so daß das Ventilverschlußstück 15 gegen die Kraft der Rückstellfeder 16 nach oben bewegt wird und den Durchtritt durch den zweiten Abschnitt des Auslaßkanals 13 zur Ausspritzöffnung 17 freigibt. Die zunächst noch im Druckraum 26 enthaltene Luft kann dann über die Bohrung 8 und den Auslaßkanal 13 entweichen. Nach Wegnahme des manuellen Drucks drückt die Rückstellfeder 22 den Kolben 7 wieder in die obere Endlage und die Rückstellfeder 16 das Ventilverschlußstück 15 in die untere Endlage nach Fig. 2. Durch den dabei im Druckraum 26 entstehenden Unterdruck nimmt das erste Ventilverschlußstück 5 seine obere Endlage an axialen Rippen 35 im Anschlußstutzen 28 ein, während das zweite Ventilverschlußstück 30 zwar vom oberen Ende des Tauchrohrs 29 abgehoben, jedoch nicht bis in die Schließlage am Ventilsitz 31 angehoben und das Produkt 36, z.B. eine Flüssigkeit, aus dem Behältnis 2 durch das Tauchrohr 29 und den Anschlußstutzen 28 hindurch in den Druckraum 26 und - gegebenenfalls nach einer weiteren Betätigung und Entlastung des Betätigungskopfes 12 - durch die Bohrung 8 bis zum Ventilverschlußstück 15 hochgesaugt wird. Durch erneutes Niederdrücken des Betätigungskopfes 12 in die Lage nach Fig. 3 wird das Produkt solange ausgegeben, bis die Dichtlippe 20 des Kolbens 7 unter die Abstufung 27 niedergedrückt worden ist. In diesem Augenblick wird der Druck im Druckraum 26 an der Dichtlippe 20 und dem Bund 21 vorbei über den Durchlaß 33 und die Öffnungen 32 zum Innenraum des Behältnisses 2 abgebaut, so daß die Produktausgabe bei einem Druckhub aufhört. Dadurch ergibt sich eine genau dosierte Ausgabemenge, jedesmal wenn der Betatigungskopf 12 betätigt wird.When the actuating head 12 is actuated for the first time by manually exerting pressure on his with a Corrugation 34 provided top moves the Piston 7 against the force of the return spring 22 in the Room 26 in the upright posture of FIGS. 2 and 3 in the direction of the connecting piece 28 down. By the case in the space 26, in the hole 8 and in the Outlet 13 resulting air pressure on the one hand the check valve 5, 6 kept closed and on the other hand the sealing lip 19 of the valve closure piece 15 close to the inside of the first section of the Outlet channel 13 is pressed so that the valve closure piece 15 against the force of the return spring 16 after is moved above and the passage through the second Section of the outlet channel 13 to the ejection opening 17th releases. The first still contained in the pressure chamber 26 Air can then through the bore 8 and the outlet channel 13 escape. After removal of manual pressure the return spring 22 pushes the piston 7 back into the upper end position and the return spring 16, the valve closure piece 15 in the lower end position of FIG takes the resulting pressure in the space 26 negative pressure the first valve closure piece 5 its upper end position axial ribs 35 in the connecting piece 28, while Although the second valve closure piece 30 from the upper end the dip tube 29 lifted off, but not to the Closed position raised on the valve seat 31 and the product 36, e.g. a liquid from the container 2 through the dip tube 29 and the connecting piece 28 through in the pressure chamber 26 and - optionally after another Actuation and discharge of the actuating head 12 - Through the bore 8 to the valve closure member 15th is sucked up. By again depressing the actuating head 12 in the position of FIG. 3 is the Product issued until the sealing lip 20 of the Piston 7 has been depressed under the gradation 27 is. At that moment, the pressure in the pressure chamber 26 past the sealing lip 20 and the collar 21 over the Passage 33 and the openings 32 to the interior of the container 2 dismantled, so that the product issue at stops a pressure stroke. This results in a precise metered dispensing amount each time the actuation head 12 is pressed.

Eine solche Betätigung in aufrechter Haltung der Saug-Druck-Pumpe und des Behältnisses 2 ist in Fig. 3 dargestellt.Such operation in upright posture of the suction-pressure pump and the container 2 is shown in Fig. 3.

In einer umgekehrten Haltung, z.B. einer Kopfüber-Haltung, wie sie in Fig. 4 dargestellt ist, in der mithin der Betätigungskopf 12 tiefer als der Anschlußstutzen 28 liegt, kann weder das Produkt 36 noch Luft über das Tauchrohr 29 aus dem Behältnis 2 angesaugt werden. Vielmehr wird das Produkt 36 nur über die Öffnungen 32 und die Nuten 33 angesaugt, sobald die Dichtlippe 20 in den Bereich der Nuten 33 übergeht, weil dann das zweite Ventilverschlußstück 30 sowohl unter dem Unterdruck als auch unter seinem Eigengewicht am Ventilsitz 31 anliegt und den Durchgang durch den Anschlußstutzen 28 sperrt, während das erste Ventilverschlußstück 5 von seinem Ventilsitz 6 entfernt worden ist.In a reverse attitude, e.g. a head-high attitude, as shown in Fig. 4, in the mithin the actuator head 12 deeper than the connecting piece 28, neither the product 36 nor air can over the dip tube 29 are sucked out of the container 2. Rather, the product 36 only through the openings 32nd and the grooves 33 sucked as soon as the sealing lip 20 in the area of the grooves 33 passes, because then the second Valve closure 30 both under the negative pressure than also rests on the valve seat 31 under its own weight and the passage through the connecting piece 28 blocks, while the first valve closure piece 5 of his Valve seat 6 has been removed.

Bei einer Betätigung des Ventilkopfes 12 bei der in Fig. 4 dargestellten Haltung der Saug-Druck-Pumpe 1, bis die Dichtlippe 20 die Abstufung 27 überschreitet, wird dagegen wiederum das erste Ventilverschlußstück 5 gegen seinen Sitz 6 gedrückt und das Produkt 36 aus dem Druckraum 26 über die Bohrung 8, das nunmehr wieder geöffnete Ventil 14 und den Auslaßkanal 13 ausgestoßen.Upon actuation of the valve head 12 at the in 4 illustrated attitude of the suction-pressure pump 1, until the sealing lip 20 exceeds the gradation 27, in turn, in turn, the first valve closure member. 5 pressed against his seat 6 and the product 36 from the Pressure chamber 26 via the bore 8, which now opened again Valve 14 and the outlet channel 13 ejected.

Die Saug-Druck-Pumpe 1 kann daher in jeder beliebigen Haltung Saug- und Druckhübe bis zur Entleerung des Behältnisses 2 ausführen.The suction-pressure pump 1 can therefore be in any Holding suction and pressure strokes until the container is emptied 2 execute.

Eine Abwandlung des dargestellten Ausführungsbeispiels kann beispielsweise darin bestehen, daß die Nuten 33 weggelassen und statt dessen die Öffnungen 32 bis an das in Fig. 1 untere Ende der Nuten 33 verlängert werden. Der Durchlaß würde dann in der Lage des Kolbens 7 nach Fig. 2 unmittelbar über die Öffnungen 32 freigegeben. Die Nuten 33 haben jedoch den Vorteil, daß der Gehäuseabschnitt 4c stabil bleibt und sich beim Aushärten seiner Kunststoffmasse bei der Herstellung nicht nennenswert verzieht, wie dies bei in den Gehäuseabschnitt 4c reichenden Öffnungen 32 der Fall sein könnte. Zwischen dem Gehäuse 4 und dem Kolben 7 ist daher über den gesamten Kolbenhub eine innige Berührung gewährleistet.A modification of the illustrated embodiment may for example be that the grooves 33rd omitted and instead the openings 32 to the lower end in Fig. 1 of the grooves 33 are extended. The passage would then in the position of the piston. 7 2 released directly through the openings 32. However, the grooves 33 have the advantage that the housing portion 4c remains stable and hardening its plastic mass in the production not worth mentioning warps, as in the housing section 4c reaching openings 32 could be the case. Between the housing 4 and the piston 7 is therefore on the entire piston stroke ensures intimate contact.

Claims (3)

Saug-Druck-Pumpe (1) zum Ausspritzen eines Produkts (36) aus einem Behältnis (2), mit einem Gehäuse (4), in dem ein axial durchbohrter Kolben (7) über einen ersten Gehäuseabschnitt (4a) abgedichtet axial verschiebbar ist, mit einer die Kolbenbohrung (8) fortsetzenden hohlen Kolbenstange (9), die in einer Öffnung (10) einer Verschlußhaube (11) von Gehäuse (4) und Behältnis (2) verschiebbar ist und auf ihrem freien Ende einen dicht befestigten Betätigungskopf (12) aufweist, durch dessen Betätigung der Kolben (7) gegen die Kraft einer Rückstellfeder (22) zu einem am Gehäuse (4) vorgesehenen Anschlußstutzen (28) für ein Tauchrohr (29) gedrückt wird und dabei in einem Druckraum (26) des Gehäuses (4) einen Druck aufbaut, der ein erstes Ventilverschlußstück (5) im Anschlußstutzen (28) gegen einen ersten Ventilsitz (6) drückt, wobei der Betätigungskopf (12) von einem sich an die Bohrung (8) anschließenden Auslaßkanal (13) über ein Rückschlagventil (14) bis zu einer Ausspritzöffnung (17) für das Produkt (36) durchsetzt ist, mit wenigstens einer Öffnung (32) in einem zweiten Gehäuseabschnitt (4b) zwischen dem ersten Gehäuseabschnitt (4a) und der Verschlußhaube (11), dadurch gekennzeichnet, daß der Kolben (7) im unbetätigten Zustand unter der Rückstellfederkraft einen Durchlaß (33) zwischen dem Druckraum (26) und der oder jeder Öffnung (32) im zweiten Gehäuseabschnitt (4b) freigibt und der Anschlußstutzen (28) einen zweiten Ventilsitz (31) und ein zweites Ventilverschlußstück (30) aufweist, das bei einer Haltung der Saug-Druck-Pumpe (1), in der der Betätigungskopf (12) tiefer als der Anschlußstutzen (28) liegt, seine Schließlage am zweiten Ventilsitz (31) einnimmt und bei einer umgekehrten Haltung, in der der Betätigungskopf (12) höher als der Anschlußstutzen (28) liegt, seine Öffnungslage einnimmt.Suction-pressure pump (1) for ejecting a product (36) from a container (2), with a housing (4) in which an axially drilled piston (7) via a first housing portion (4a) is axially displaceable sealed, with a hollow piston rod (9) which continues the piston bore (8) and which is displaceable in an opening (10) of a closure hood (11) of housing (4) and container (2) and has a tightly secured actuating head (12) on its free end. by the operation of the piston (7) against the force of a return spring (22) to a housing (4) provided connection piece (28) for a dip tube (29) is pressed and thereby in a pressure chamber (26) of the housing (4 ) builds up a pressure which presses a first valve closure piece (5) in the connecting piece (28) against a first valve seat (6), wherein the actuating head (12) from a to the bore (8) subsequent outlet channel (13) via a check valve ( 14) to an off injection opening (17) for the product (36) is penetrated, with at least one opening (32) in a second housing portion (4b) between the first housing portion (4a) and the closure cap (11), characterized in that the piston (7) in the unactuated state under the return spring force a passage (33) between the pressure chamber (26) and the or each opening (32) in the second housing portion (4b) releases and the connecting piece (28) has a second valve seat (31) and a second valve closure piece (30 ), which in an attitude of the suction-pressure pump (1), in which the actuating head (12) is lower than the connecting piece (28) assumes its closed position on the second valve seat (31) and in a reverse attitude, in the the actuating head (12) is higher than the connecting piece (28), assumes its open position. Saug-Druck-Pumpe nach Anspruch 1, dadurch gekennzeichnet, daß der Durchlaß (33) durch wenigstens eine axiale Nut in der Innenseite eines mittleren Gehäuseabschnitts (4c) zwischen dem ersten und dem zweiten Gehäuseabschnitt (4a, 4b) gebildet ist.Suction-pressure pump according to claim 1, characterized in that the passage (33) is formed by at least one axial groove in the inside of a central housing portion (4c) between the first and the second housing portion (4a, 4b). Saug-Druck-Pumpe nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß das zweite Ventilverschlußstück (30) unter seinem Eigengewicht betätigbar ist.Suction-pressure pump according to claim 1 or 2, characterized in that the second valve closure piece (30) can be actuated under its own weight.
EP03015143A 2002-07-13 2003-07-04 Dispenser pump Expired - Lifetime EP1380352B1 (en)

Applications Claiming Priority (2)

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DE10231751A DE10231751B4 (en) 2002-07-13 2002-07-13 Suction-pressure pump for ejecting a product from a container
DE10231751 2002-07-13

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EP1380352A1 true EP1380352A1 (en) 2004-01-14
EP1380352B1 EP1380352B1 (en) 2005-01-12

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US (1) US6779690B2 (en)
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AT (1) ATE286783T1 (en)
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US6779690B2 (en) 2004-08-24
DK1380352T3 (en) 2005-05-09
DE10231751B4 (en) 2004-07-29
DE50300245D1 (en) 2005-02-17
EP1380352B1 (en) 2005-01-12
ES2231747T3 (en) 2005-05-16
US20040007597A1 (en) 2004-01-15
DE10231751A1 (en) 2004-02-05
ATE286783T1 (en) 2005-01-15

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