EP0361260A2 - Pompe à piston pour dosage des substances coulantes - Google Patents

Pompe à piston pour dosage des substances coulantes Download PDF

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Publication number
EP0361260A2
EP0361260A2 EP89117225A EP89117225A EP0361260A2 EP 0361260 A2 EP0361260 A2 EP 0361260A2 EP 89117225 A EP89117225 A EP 89117225A EP 89117225 A EP89117225 A EP 89117225A EP 0361260 A2 EP0361260 A2 EP 0361260A2
Authority
EP
European Patent Office
Prior art keywords
piston
cylinder
piston pump
stop ring
ring
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
EP89117225A
Other languages
German (de)
English (en)
Other versions
EP0361260A3 (en
EP0361260B1 (fr
Inventor
Hermann Ophardt
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.)
OPHARDT PRODUCT HERMANN OPHARDT
Original Assignee
OPHARDT PRODUCT HERMANN OPHARDT
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 OPHARDT PRODUCT HERMANN OPHARDT filed Critical OPHARDT PRODUCT HERMANN OPHARDT
Priority to AT8989117225T priority Critical patent/ATE104837T1/de
Publication of EP0361260A2 publication Critical patent/EP0361260A2/fr
Publication of EP0361260A3 publication Critical patent/EP0361260A3/de
Application granted granted Critical
Publication of EP0361260B1 publication Critical patent/EP0361260B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
    • B67D7/00—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes
    • B67D7/02—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes for transferring liquids other than fuel or lubricants
    • B67D7/0205—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes for transferring liquids other than fuel or lubricants by manually operable pumping apparatus
    • 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
    • B05B11/1023—Piston pumps having an outlet valve opened by deformation or displacement of the piston relative to its actuating stem

Definitions

  • the invention relates to a piston pump for dosing flowable substances, for example disinfectants, liquid soaps or creams, with a permanently spring-loaded piston which has a radial groove in which an annular valve element is arranged axially displaceably, which seals and slides on the piston when the piston is actuated Cylinder wall rests, wherein it releases a passage opening for the substance to be conveyed during the pressure stroke, which blocks it during the suction stroke.
  • a piston pump for dosing flowable substances for example disinfectants, liquid soaps or creams
  • a permanently spring-loaded piston which has a radial groove in which an annular valve element is arranged axially displaceably, which seals and slides on the piston when the piston is actuated Cylinder wall rests, wherein it releases a passage opening for the substance to be conveyed during the pressure stroke, which blocks it during the suction stroke.
  • Piston pumps of this type have the disadvantage that they drip when conveying low-viscosity substances, since the valve element, usually an O-ring, does not provide sufficient sealing when the piston is at rest.
  • the invention is therefore based on the object of improving a piston pump of the type mentioned in such a way that, with a simple design, it does not drip even when low-viscosity substances are conveyed.
  • this object is achieved in that the cylinder wall has a circumferential stop ring for the valve element, which is in the starting position of the piston against the stop.
  • the pressure of the return spring is used to press the valve element between the piston and cylinder in a sealing manner.
  • the stop ring is formed by a form-fitting sleeve inserted into the cylinder, in which the piston is guided.
  • the stop ring is formed by a radial deformation of the cylinder wall.
  • the cylinder is designed as a step cylinder, the stop ring being located in the vicinity of the step.
  • the diameter of the cylinder in front of the step is to be chosen larger or smaller than the diameter of the cylinder behind the step.
  • FIG. 1 shows a longitudinal section of a piston pump according to the invention.
  • the hollow-cylindrical piston (1) has at its rear end a radial groove (2) in which an O-ring (3), the outer diameter of which is axially displaceable, is arranged is larger than that of the piston.
  • an O-ring (3) the outer diameter of which is axially displaceable, is arranged is larger than that of the piston.
  • two diametrically arranged passage openings (4) are provided, which open into the interior of the piston.
  • a sleeve (6) is inserted in the front section of the stepped cylinder (5) in which the piston (1) is guided tightly using a piston ring (11).
  • the sleeve (6) has a collar (7) at its front end and an inner circumferential ring (7a) at its rear end, which forms the stop ring.
  • the original diameter difference of the stepped cylinder is compensated for by the sleeve (6) used, so that the cylinder diameter is the same size on both sides of the stop ring.
  • a return spring (8) is clamped between the cylinder base (12) and the piston (11) and is constantly under tension.
  • FIG. 2 shows a longitudinal section of a piston pump according to the invention.
  • the piston (1) corresponds to that described in FIG. 1.
  • the design of the cylinder (5) is made in one piece, the stop ring (6) being obtained by deforming the cylinder wall and separating the cylinder (5) into two cylinder spaces (7, 8), the cylinder diameter being the same on both sides of the stop ring (6) remains.
  • the piston (1) is guided in the cylinder chamber (7) tightly using a piston ring (11).
  • a reset Spring (9) is clamped between the cylinder base (12) and the piston (1) in the cylinder chamber (8) and is constantly under tension.
  • FIG. 3 shows a longitudinal section of a piston pump according to the invention.
  • the piston (1) corresponds to that described in Figures 1 and 2.
  • the cylinder (5) is held in one piece in its design and of the type of a stepped cylinder.
  • the circumferential stop ring (6) is formed on the cylinder wall and forms the boundary between two cylinder spaces (7, 8) of the cylinder (5). Both cylinder rooms are different in diameter.
  • the piston (1) is guided in the cylinder chamber (7) tightly using a piston ring (11).
  • a return spring (9) is clamped between the cylinder base (12) and the piston (1) in the cylinder chamber (8) and is constantly under tension.
  • FIG. 4 shows a longitudinal section of a piston pump according to the invention.
  • the design of the piston (1) corresponds to that described in the previous figures.
  • a sleeve (9) which is provided with an inner circumferential stop ring (7), is inserted into the cylinder (5) in a form-fitting manner and sealed with an O-ring (6).
  • the stop ring (7) obtained by deforming the sleeve forms a umlau on the outside of the sleeve fende ring groove (10), which receives the O-ring (6).
  • the circumferential stop ring (7) separates the cylinder (5) into two cylinder spaces, the cylinder diameter remaining the same on both sides of the stop ring (7).
  • the piston (1) is guided in the cylinder chamber (13) tightly using a piston ring (14).
  • the return spring (15) is clamped between the cylinder base (16) and the piston (1) in the cylinder chamber (12) and is constantly under tension.
  • the piston (1) is returned to its starting position by the return spring (8), liquid being sucked in through the valve (10) arranged here in an exemplary embodiment.
  • the O-ring (3) lies in a rear position blocking the passage openings (4).
  • the O-ring (3) is pressed by the force of the return spring (8) between the ring groove (2) of the piston (1) and the stop ring (7a), so that a liquid-tight seal between the piston (1) and cylinder (5) arises.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Details Of Reciprocating Pumps (AREA)
EP89117225A 1988-09-17 1989-09-18 Pompe à piston pour dosage des substances coulantes Expired - Lifetime EP0361260B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT8989117225T ATE104837T1 (de) 1988-09-17 1989-09-18 Kolbenpumpe zum dosieren fliessfaehiger substanzen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8811811U DE8811811U1 (de) 1988-09-17 1988-09-17 Kolbenpumpe zum Dosieren fließfähiger Substanzen
DE8811811U 1988-09-17

Publications (3)

Publication Number Publication Date
EP0361260A2 true EP0361260A2 (fr) 1990-04-04
EP0361260A3 EP0361260A3 (en) 1990-08-01
EP0361260B1 EP0361260B1 (fr) 1994-04-27

Family

ID=6828052

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89117225A Expired - Lifetime EP0361260B1 (fr) 1988-09-17 1989-09-18 Pompe à piston pour dosage des substances coulantes

Country Status (3)

Country Link
EP (1) EP0361260B1 (fr)
AT (1) ATE104837T1 (fr)
DE (2) DE8811811U1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1426662A1 (fr) * 2002-12-06 2004-06-09 Boehringer Ingelheim International GmbH Pompe à piston
RU2329929C2 (ru) * 2002-06-28 2008-07-27 Томас Гмбх Регулирующий клапан
EP2441365A1 (fr) 2010-10-12 2012-04-18 Hans-Jürgen Brachtendorf Ensemble de remplissage de liquide
USD1061260S1 (en) 2023-07-18 2025-02-11 S. C. Johnson & Son, Inc. Dispenser

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10341748B4 (de) * 2003-09-08 2017-01-26 Ophardt Product Kg Pumpe zum Entleeren stehender und hängender Behälter

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1201684B (de) * 1964-01-28 1965-09-23 Erich Pfeiffer K G Metallwaren In einem Gefaess eingebaute einfach wirkende handbetaetigte Schubkolbenpumpe
US3257961A (en) * 1964-04-23 1966-06-28 Holmes T J Co Pump
US3187960A (en) * 1964-05-08 1965-06-08 Sterling Drug Inc Non-metallic pump dispenser
US3319577A (en) * 1965-02-25 1967-05-16 Margrete L Stinnes Sliding seal and valve for reciprocating pump plunger
US3500760A (en) * 1968-04-22 1970-03-17 Holmes T J Co Pump for an atomizer or the like
DK125729B (da) * 1970-03-19 1973-04-30 Broen Armatur As Doseringsapparat for væsker.
FR2082807A5 (fr) * 1970-03-26 1971-12-10 Step Soc Tech Pulverisation
GB1527224A (en) * 1975-09-17 1978-10-04 Metal Box Co Ltd Device for producing a jet or spray of liquid
FR2606643A1 (fr) * 1986-11-17 1988-05-20 Congio Gerard Seringue rendue hors d'usage apres la premiere utilisation

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2329929C2 (ru) * 2002-06-28 2008-07-27 Томас Гмбх Регулирующий клапан
EP1426662A1 (fr) * 2002-12-06 2004-06-09 Boehringer Ingelheim International GmbH Pompe à piston
WO2004053362A1 (fr) * 2002-12-06 2004-06-24 Boehringer Ingelheim International Gmbh Systeme pompe a piston
US7284474B2 (en) 2002-12-06 2007-10-23 Boehringer Ingelheim International Gmbh Piston-pumping system having o-ring seal properties
EP2441365A1 (fr) 2010-10-12 2012-04-18 Hans-Jürgen Brachtendorf Ensemble de remplissage de liquide
WO2012048868A1 (fr) 2010-10-12 2012-04-19 Brachtendorf Hans-Juergen Ensemble de distribution de liquide
USD1061260S1 (en) 2023-07-18 2025-02-11 S. C. Johnson & Son, Inc. Dispenser

Also Published As

Publication number Publication date
DE8811811U1 (de) 1988-10-27
DE58907565D1 (de) 1994-06-01
EP0361260A3 (en) 1990-08-01
EP0361260B1 (fr) 1994-04-27
ATE104837T1 (de) 1994-05-15

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