EP0431497A2 - Pompe à main à double effet de dosage et/ou de pulvérisation - Google Patents

Pompe à main à double effet de dosage et/ou de pulvérisation Download PDF

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Publication number
EP0431497A2
EP0431497A2 EP90123018A EP90123018A EP0431497A2 EP 0431497 A2 EP0431497 A2 EP 0431497A2 EP 90123018 A EP90123018 A EP 90123018A EP 90123018 A EP90123018 A EP 90123018A EP 0431497 A2 EP0431497 A2 EP 0431497A2
Authority
EP
European Patent Office
Prior art keywords
pump
piston
extension
sealing lip
cylinder
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Withdrawn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
EP90123018A
Other languages
German (de)
English (en)
Other versions
EP0431497A3 (en
Inventor
Jörg Hofmann
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0431497A2 publication Critical patent/EP0431497A2/fr
Publication of EP0431497A3 publication Critical patent/EP0431497A3/de
Withdrawn legal-status Critical Current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
    • 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
    • B05B11/1088—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 the pump being a double-acting pump

Definitions

  • the invention relates to a manually operated, double-acting metering and / or atomizing pump according to the preamble of claim 1.
  • Such a pump is known from DE-PS 32 46 442 and is equipped in the transition area between the pump cylinder and the suction pipe with a valve which allows the passage of the prevents the suction pipe from drawing liquid from the pump cylinder back into a container during the downward movement of the pump piston.
  • the valve is formed by a ball valve
  • a sleeve instead of a ball valve, a sleeve is provided which has a sleeve section which extends obliquely upwards in the direction of the cylinder wall from a base and which seals between the cylinder wall and the one Bottom of the cylinder closing cage causes.
  • the sleeve and the cage are provided with a through opening.
  • the invention has for its object to design a pump of the type mentioned in such a way that it ensures safe operation with a simple structure.
  • the invention provides a pump in which a valve unit is provided in order to avoid backflow of the sucked-in liquid, which preferably consists of a neck section formed on the pump cylinder, pointing in the direction of the pump cylinder sealing lip is formed such that the sealing lip sealingly abuts a preferably circular cross-section extension of the piston.
  • a further sealing unit formed by an upwardly pointing sealing lip, is provided in the region of the piston rod, which sealingly contacts the piston rod and thereby creates an additional seal between the upper part of the pump cylinder and the piston rod.
  • the pump according to the invention simple assembly in the area of the pump body, the pump piston and the valves located on the lower side and optionally on the upper side of the pump cylinder results from the use of a preferably flat piston which has an extension corresponding to the piston rod on its lower side having. After the piston has been introduced, a seal is ensured downwards and possibly also upwards in the region of the piston rod.
  • the pump together with the sealing parts consists of a relatively small number of individual elements, the sealing lips themselves are preferably already formed on the pump cylinder, and no additional parts are required to form sealing elements or valves.
  • the drawing shows a sectional view through the pump with pump body and pump piston.
  • the pump consists of a pump body 1 which, according to the drawing, has an essentially tapered shape, but can also have any other shape.
  • a pump cylinder 3 which is closed on its upper side in the drawing by a flange-like section 5 and is received by the latter.
  • section 5 there is a central opening 7 for the passage of a piston rod 8.
  • the pump cylinder 3 has a section 10a, which is formed on the lower side and is reduced with respect to the inside and outside diameter compared to the pump cylinder 3, which according to the illustrated embodiment is preferably provided with a Pipe extension 10 is formed, the smaller outer diameter than the pump cylinder 3.
  • the inner diameter of the tubular extension 10 is slightly larger than the outer diameter of the piston extension 6, so that the piston extension 6, which preferably has a circular cross section and / or a shape corresponding to the piston rod 8 within of the pipe socket 10 is displaceable in the direction of an axis denoted by 12.
  • the opening defined in the tube extension 10 is slightly reduced in cross section in the region of the extension of the sealing lip 14.
  • the pipe socket 10 is connected to a suction pipe 16, which is inserted, for example, in or onto the pipe socket 10.
  • the pipe socket 10 is surrounded by a suction pipe 16, ie the suction pipe 16 has an inside corresponding to the outer diameter of the pipe socket 10 diameter and can be easily pushed onto the pipe socket 10.
  • the flange-like section 5 adjoins a cylindrical part 18, which serves to receive the piston rod 8 and defines an annular space 19 with respect to the piston rod 8, through which the liquid pushed up by the piston 9 closes an outlet opening 20 is guided.
  • an atomizer nozzle (not shown) can be inserted in the outlet opening 20.
  • annular gap 22 which is larger than the annular gap 19, is fixed, which serves to enable the displacement of an actuating head 24, which is used practically as a pumping element and at the same time for guiding the pumped-up liquid to the outlet opening 20.
  • a compression spring is preferably mounted in the pump cylinder 3, presses with one side against the lower surface of the flat piston 9 and thus the piston 9 into an upper position.
  • the spring 25 presses e.g. a coil spring, on the bottom 3a of the pump cylinder 3.
  • the spring 25 can also be outside the pump cylinder 3 and e.g. be arranged in a correspondingly designed space 22 and in this case bias the piston 9 into its upper position above the actuating head 24.
  • the piston rod 18 can be provided at its upper end with a sealing device, preferably an outer sealing lip 26, which bears against the inner wall of the actuating head 24 and prevents passage in the space between the actuating head 24 and piston rod 19 of liquid in the annular space 22nd
  • the piston rod guide 18 is provided with a circumferential, upwardly directed sealing lip 28 which bears against the outer wall of the piston rod 8 and a seal between the piston rod 8 and the piston rod guide 18, i.e. a seal with respect to the pump cylinder 3.
  • the sealing lip 28 is formed on the flange 5 and extends upwards in the direction of the piston rod 8.
  • the sealing lip 28 can also be formed at another location on the inner wall of the piston rod receptacle 18.
  • the pump body 1 is provided in a manner known per se with an internal thread 30, which makes it possible to screw the pump body 1 onto a container (not shown). Furthermore, the pump body 1 has a ventilation opening, not shown, which allows air to pass from the atmosphere into the container, not shown.
  • the piston 9 is preferably provided with a lateral, upwardly facing sealing lip 32 formed on the piston 9 or with a corresponding sleeve which, when moving downward, allows liquid to pass laterally past the piston 9.
  • the sealing lip 32 presses sealingly against the inner wall of the pump cylinder 3.
  • a subsequent pressing down of the actuating head 24 causes the liquid located in the pump cylinder 3 below the piston 9 to be pressurized by the blocking action of the sealing lip 14 with respect to the piston extension 6 and flows past the side sealing lips 32 of the piston 9, between the sealing lip 28 which may be present and the piston rod 18 is pressed into the gap designated 19 and is guided from there to the outlet opening 20. Due to the pressure generated in the pump cylinder 3, the sealing lip 14 is pressed firmly against the wall of the extension 6 and thus prevents a liquid flow from the pump cylinder 3 down into the suction pipe 16.
  • the sealing lip 32 acts in a similar manner with the piston 9, ie when the piston 9 is pulled up, the sealing lip 32 has a blocking effect and when the piston 9 moves downward, a flow of liquid past the sealing lip 32 and against the inner wall of the pump cylinder 3 is permitted as a result their upward facing position.
  • the piston 9 with the sealing lip 32 can also be replaced by a piston of a different type, if that before upright operation is possible.
  • the pump according to the invention is preferably completely or at least largely made of plastic, preferably polypropylene (PP), polyfluoroethylene (PFE) or polyamide (PA), so that either all parts or at least all functional parts, such as pump body, piston, pump cylinder, are made of plastic .
  • PP polypropylene
  • PFE polyfluoroethylene
  • PA polyamide
  • the sealing lips 14 and 28 have a flexibility and rigidity that on the one hand a slight movement of their free end away from the piston extension 6 or piston rod 8 is possible in order to achieve a To allow bypassing of liquid or the like, on the other hand, it withstands the pressure of the liquid or the like and vice versa ensures a sealing condition.
  • the two sealing lips 14, 28 thus work as valves with an “open” or “blocked” state, depending on the direction of movement of the piston 9.
  • the piston has a flat shape and a diameter which is greater than the outer diameter of the piston rod 8 and / or the piston extension 6. It can be seen that the dimensioning of the outer diameter of the piston rod 8, the piston 9 and the piston extension 6 can be changed.
  • the piston rod 8 is inserted into a correspondingly formed recess 34 in the actuating head 24, preferably inserted in a clamped manner, so that after the assembly of the pump body, the piston rod 8 protrudes from the upper opening of the pump body and the actuating head 24 can easily be inserted by pushing it in cylindrical portion 24 can be placed in the annular space 22 on the piston rod 8.
  • a clamping action between the piston rod 8 and the receiving section 34 of the actuating head 24 is preferred.
  • the pump cylinder 3 is preferably received by the flange 5 in a clamping manner, but can also be applied to any other one be connected to the flange 5 ge way.
  • both the piston rod 8 and the piston extension 6 can have an axial cavity, which results in a material saving, but on the other hand both the piston rod and the piston extension 6 can have a full cross section.

Landscapes

  • Reciprocating Pumps (AREA)
EP19900123018 1989-12-04 1990-11-30 Double-acting spraying and/or dosing hand pump Withdrawn EP0431497A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3940101 1989-12-04
DE3940101A DE3940101A1 (de) 1989-12-04 1989-12-04 Handbetaetigbare, doppelt wirkende dosier- und/oder zerstaeuberpumpe

Publications (2)

Publication Number Publication Date
EP0431497A2 true EP0431497A2 (fr) 1991-06-12
EP0431497A3 EP0431497A3 (en) 1991-11-21

Family

ID=6394796

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900123018 Withdrawn EP0431497A3 (en) 1989-12-04 1990-11-30 Double-acting spraying and/or dosing hand pump

Country Status (4)

Country Link
US (1) US5110271A (fr)
EP (1) EP0431497A3 (fr)
JP (1) JPH03182688A (fr)
DE (1) DE3940101A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5332129A (en) * 1993-06-16 1994-07-26 Moen Incorporated Soap dispenser assembly
DE19510745A1 (de) * 1995-03-24 1996-09-26 Bosch Gmbh Robert Kolbenpumpe
US6050457A (en) * 1995-12-06 2000-04-18 The Procter & Gamble Company High pressure manually-actuated spray pump
JP3427383B1 (ja) * 2002-04-08 2003-07-14 有限会社ケー・エム・シー ピストンポンプ
FR2859460B1 (fr) * 2003-09-10 2005-11-04 Valois Sas Pompe de distribution de produit fluide
US8065758B1 (en) 2006-05-17 2011-11-29 Edgar Gabriel Mendez Lavatory vessel liquid dispenser
NL2015724B1 (en) 2015-11-04 2017-05-24 Gab Eng & Dev B V Storage holder for a dispenser.
NL2016644B1 (en) 2016-04-20 2017-11-07 Gab Eng & Development B V Storage holder for a dispenser

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1290043B (de) * 1966-03-12 1969-02-27 Albert Rudolf Zerstaeuberpumpe, insbesondere fuer Parfuem oder andere kosmetische Fluessigkeiten
FR2320788A2 (fr) * 1975-08-14 1977-03-11 Pulverisation Step Ste Tech Perfectionnements apportes aux vaporisateurs
FR2346056A1 (fr) * 1975-07-11 1977-10-28 Step Soc Tech Pulverisation Perfectionnements apportes aux vaporisateurs
US4274560A (en) * 1976-04-30 1981-06-23 Emson Research Incorporated Atomizing pump dispenser
IT1086022B (it) * 1977-09-05 1985-05-28 Coster Tecnologie Speciali Spa Pompetta manuale alternativa nebulizzatrice di liquidi,come profumi ed altri liquidi
DE7807299U1 (de) * 1978-03-10 1979-05-31 Vereinigte Verpackungsgesellschaft Mbh, 4019 Monheim Vorrichtung zum verspruehen einer fluessigkeit
FR2433982A1 (fr) * 1978-08-23 1980-03-21 Mitani Valve Co Ltd Atomiseur a pompe
DE2838613A1 (de) * 1978-09-05 1980-03-13 Seltmann Hans Juergen Ausgabepumpe, insbesondere zum zerstaeuben von fluessigkeiten
CS235119B1 (en) * 1981-12-16 1985-05-15 Miloslav Sorm Double-acting mechanical pump for liquid sprayers
US4512501A (en) * 1982-08-23 1985-04-23 Realex Corporatrion Down-locking dispensing pump with guided check valve hold-down structure
US4643338A (en) * 1983-05-24 1987-02-17 Yoshino Kogyosho Co., Ltd. Manual liquid dispenser
GB2163220B (en) * 1984-08-17 1987-09-09 Univ Malaya Pumps
DE8712593U1 (de) * 1987-09-18 1987-12-23 Seitz, Susanne, 8597 Wiesau Kleinpumpe mit Zerstäuber-Aufsatz für Sprühflaschen
DE8904089U1 (de) * 1989-04-03 1989-07-06 Hodek, Jiri, Dipl.-Ing., 8580 Bayreuth Doppelt-effektive Kleinpumpe mit Zerstäuber

Also Published As

Publication number Publication date
US5110271A (en) 1992-05-05
DE3940101A1 (de) 1991-06-06
EP0431497A3 (en) 1991-11-21
JPH03182688A (ja) 1991-08-08

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