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EP0117969B2 - Pompe doseuse à piston ayant une membrane - Google Patents
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EP0117969B2 - Pompe doseuse à piston ayant une membrane - Google Patents

Pompe doseuse à piston ayant une membrane Download PDF

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Publication number
EP0117969B2
EP0117969B2 EP84100026A EP84100026A EP0117969B2 EP 0117969 B2 EP0117969 B2 EP 0117969B2 EP 84100026 A EP84100026 A EP 84100026A EP 84100026 A EP84100026 A EP 84100026A EP 0117969 B2 EP0117969 B2 EP 0117969B2
Authority
EP
European Patent Office
Prior art keywords
metering
piston
pump
insert
wear
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
EP84100026A
Other languages
German (de)
English (en)
Other versions
EP0117969A3 (en
EP0117969A2 (fr
EP0117969B1 (fr
Inventor
Walter Eichner
Kay Bödecker
Wolfgang Huber
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.)
Ecolab Engineering GmbH
Original Assignee
Lang Apparatebau 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6187907&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0117969(B2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Lang Apparatebau GmbH filed Critical Lang Apparatebau GmbH
Priority to AT84100026T priority Critical patent/ATE34810T1/de
Publication of EP0117969A2 publication Critical patent/EP0117969A2/fr
Publication of EP0117969A3 publication Critical patent/EP0117969A3/de
Application granted granted Critical
Publication of EP0117969B1 publication Critical patent/EP0117969B1/fr
Publication of EP0117969B2 publication Critical patent/EP0117969B2/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
    • F04B23/00—Pumping installations or systems
    • F04B23/04—Combinations of two or more pumps
    • F04B23/06—Combinations of two or more pumps the pumps being all of reciprocating positive-displacement type
    • 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
    • F04B13/00—Pumps specially modified to deliver fixed or variable measured quantities

Definitions

  • the invention relates to a piston diaphragm metering pump with mechanical-hydraulic, mechanical-pneumatic or electric drive and with a metering piston designed as a plunger and a pre-delivery membrane for metering an additional liquid into the injection point of a main liquid line, in particular into a water line, and with a pump suction valve, a pre-delivery chamber and an exchangeable wear part insert housed in the lower part of the pump, which contains the dosing cylinder space, a piston sealing element which is fixed in position and allows the latter to be separated from the pre-delivery space, and a dosing check valve.
  • a piston diaphragm metering pump of the aforementioned type is known from FR-A 21 20 945.
  • Metering pumps of this type are used because, on the one hand, due to the high performance of the pre-delivery membrane, good ventilation and suction and, on the other hand, due to the small metering piston in relation to the membrane area in connection with an elastic sealing element, preferably as an O-ring, exact metering even with different viscosities and Pump back pressure must be guaranteed. From practice, however, it is known that the performance of piston pumps with small dosing quantities depends very much on the function of the sealing elements designed as a compression O-ring, suction and pressure valve.
  • the invention has for its object to improve a piston diaphragm metering pump of the type mentioned in such a way that a simple, quick and safe repair of the pump with regard to its most essential parts subject to wear and tear is possible without additional readjustment of the metered amount when wear occurs.
  • the disassembly and assembly should be carried out in such a way that the position of the sealing element assigned to the dosing piston is clearly retained exactly without readjustment.
  • the wear part insert also the pump suction valve, which is subject to substantial wear, and a the latter contains a press-fit ring which defines it, together with these parts as well as the metering check valve and the piston sealing element forms a structural unit which holds together even when not installed, and such a wear part insert is in direct contact with an application edge which is present in the lower part of the pump and ensures a precisely defined relative position of the piston sealing element and metering piston , as well as the latter for any replacement in the opposite direction to the dosing piston.
  • the replacement of the wear part insert can be carried out easily, quickly and safely and that no readjustment of the pump is required.
  • the functional elements that are most important for the function of the pump, but most exposed to wear in the wear part insert, it is possible to restore the pump to the required accuracy with a few simple steps by replacing the wear part insert after wear has occurred. Because of the contact edge on the lower part of the pump assigned to the wear part insert, the relative position of the piston sealing element to the metering piston remains exactly the same after each replacement of the wear part insert.
  • the metering pump shown in section in the drawing and designated as a whole by 1 has a metering piston 2 designed as a plunger and having a pre-delivery membrane.
  • a metering piston 2 designed as a plunger and having a pre-delivery membrane.
  • dosing liquid is sucked in via the suction pipe 5.
  • the metering piston 2 is moved back in the direction of the arrow 9, the metering liquid present in the metering cylinder chamber 7 is expelled into the metering line 12 via the metering check valve 10, which is in particular designed as a ring valve.
  • the pump 1 makes it possible to deliver the pre-delivery quantity not only through a separate suction channel directly into the pre-delivery space 8, but also through the metering cylinder space 7. This makes one special quick and safe self-venting and thus a quick and exact dosing.
  • the individual parts of the pump 1 which are mainly exposed to wear are combined in a separate wear part insert 13.
  • the insert 13 therefore contains a piston guide element 18, which is preferably to be engaged in the insert body via a bead 19 and serves to fix the piston sealing element 17 which is essential for the function of the pump 1.
  • the body of the pump 1 is to contain a guide 20, preferably designed as a bore, with a contact edge 21 in the pump lower part 22 that is precisely aligned with the metering piston 2.
  • the contact edge 21 must be aligned such that the guide 20 receives the insert 13 including the piston sealing element 17 exactly in the correct position relative to the metering piston 2 without further adjustment.
  • sealing elements 23 and 24, in particular O-rings are expediently provided, which seal the metering line against the pre-delivery chamber 8 or atmosphere.
  • a press-in ring 25, a sealing element 26 and an intermediate disk 27 serve to fix the retaining ring 15 of the ball 16 also towards the rear.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Closures For Containers (AREA)
  • Reciprocating Pumps (AREA)

Claims (6)

  1. Pompe doseuse à membrane et à piston (1) ayant un entraînement mécano-hydraulique, mécano-pneumatique ou électrique et comportant un piston doseur (2) sous forme de piston plongeur, ainsi qu'une membrane de prérefoulement (3) pour effectuer le dosage final d'un liquide d'appoint à l'emplacement d'injection d'une conduite de liquide principale, notamment d'une conduite d'eau, un clapet d'aspiration de pompe (6), une chambre de prérefoulement (8) et une cartouche d'usure (13) remplaçable logée dans une partie inférieure (22) de la pompe et comprenant la chambre du cylindre de dosage (7), un élément à piston (17) permettant de séparer cette dernière de la chambre de prérefoulement (8) et dont la position est fixe à l'intérieur de la cartouche (13), ainsi qu'un clapet de retenue de dosage (10), cette pompe étant caractérisée par le fait que la cartouche d'usure (13) contient également le clapet d'aspiration de pompe (6) soumis à une usure considérable, ainsi qu'un anneau emmanché à force (25) maintenant ce dernier en place, qu'elle forme un ensemble solidaire, même en étant non montée, avec ces éléments (6, 25) ainsi qu'avec le clapet de retenue de dosage (10) et l'élément d'étanchéité de piston (17), et qu'une telle cartouche d'usure (13) prend appui directement sur un bord de guidage (21) ménagé dans la partie inférieure de la pompe (22) assurant une position relative précise de l'élément d'étanchéité de piston (12) et du piston de dosage (2), et pouvant être retirée de ce bord de guidage dans le sens opposé au piston de dosage (2) pour un remplacement éventuel.
  2. Pompe selon la revendication 1, caractérisée par le fait que le clapet d'aspiration de pompe (6) contenu dans la cartouche (13) a la forme d'un clapet sphérique constitué d'une bille (16), d'un anneau de retenue (15) et d'un joint torique (14).
  3. Pompe selon l'une ou l'autre des revendications 1 ou 2, caractérisée par le fait que la cartouche (13) contient un clapet de retenue de dosage (10) ayant la forme d'un clapet annulaire à faible zone morte.
  4. Pompe selon l'une quelconque des revendications 1 à 3, caractérisée par le fait que la cartouche (13) comprend un élément d'étanchéité de piston (17) ayant la forme d'un joint torique et étant fixé à l'intérieur de la cartouche (13) par un élément de guidage de piston (18) qui, de préférence, est fixé dans celle-ci.
  5. Pompe selon l'une quelconque des revendications 1 à 4, caractérisée par le fait qu'un guide (20) ayant de préférence la forme d'un alésage et étant situé dans la partie inférieure (22) de la pompe, est adapté à la cartouche (13).
  6. Pompe selon l'une quelconque des revendications 1 à 5, caractérisée par le fait que la cartouche (13) comporte un conduit de dosage (12) opposé à la chambre de prérefoulement (8) et des éléments d'étanchéité (23, 24), de préférence des joints toriques, qui isolent de l'atmosphère.
EP84100026A 1983-01-08 1984-01-03 Pompe doseuse à piston ayant une membrane Expired - Lifetime EP0117969B2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84100026T ATE34810T1 (de) 1983-01-08 1984-01-03 Kolben-membrandosierpumpe.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3300461 1983-01-08
DE3300461A DE3300461A1 (de) 1983-01-08 1983-01-08 Kolben-membrandosierpumpe

Publications (4)

Publication Number Publication Date
EP0117969A2 EP0117969A2 (fr) 1984-09-12
EP0117969A3 EP0117969A3 (en) 1986-05-14
EP0117969B1 EP0117969B1 (fr) 1988-06-01
EP0117969B2 true EP0117969B2 (fr) 1994-01-05

Family

ID=6187907

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84100026A Expired - Lifetime EP0117969B2 (fr) 1983-01-08 1984-01-03 Pompe doseuse à piston ayant une membrane

Country Status (3)

Country Link
EP (1) EP0117969B2 (fr)
AT (1) ATE34810T1 (fr)
DE (2) DE3300461A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103649520A (zh) * 2011-05-13 2014-03-19 株式会社三国 高压燃料泵装置

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3329006C2 (de) * 1983-08-11 1993-12-09 Lang Apparatebau Gmbh Tauchkolben-Dosierpumpe
DE3738656C1 (de) * 1987-11-13 1989-03-23 Gruenbeck Josef Wasseraufb Dosierpumpe
DE3741968C3 (de) * 1987-12-11 2002-11-14 Huebers Verfahrenstech Dosierpumpe
DE3928411A1 (de) * 1989-08-28 1991-03-07 Gruenbeck Josef Wasseraufb Dosierpumpe
DE9109288U1 (de) * 1991-07-27 1992-09-03 Verpaco AG, Hünenberg Mehrfach-Dosierstation zum aseptischen Abfüllen von Produkten
IT1259323B (it) * 1992-03-10 1996-03-12 Dispositivo monoblocco per l'impiego su di un automezzo adibito alla pulizia delle strade da neve e ghiaccio
GB2366335B (en) * 2000-08-22 2004-09-01 Imi Cornelius Valve
WO2007013797A1 (fr) * 2005-07-29 2007-02-01 Robert Bosch Gmbh Courroie d’entraînement

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE330902C (de) * 1919-11-05 1920-12-23 Carl Schmidt Einfach wirkende Tauchkolbenpumpe mit Einsatzzylinder
US2766701A (en) * 1953-03-09 1956-10-16 Nat Supply Co Plunger and cylinder for pump
FR1074110A (fr) * 1953-10-26 1954-10-01 Pompe perfectionnée
US3223040A (en) * 1962-04-09 1965-12-14 Stewart Warner Corp Two component pumping and proportioning system
US3680985A (en) * 1970-12-28 1972-08-01 Mec O Matic The Pump
BE800023A (nl) * 1973-05-25 1973-09-17 Unitas Sa Pomp voor het verpompen van kleine hoeveelheden gedoseerde vloeistoffen,
US4242063A (en) * 1979-06-13 1980-12-30 Lear Siegler, Inc. High pressure multi-cylinder pump
DE3134940C2 (de) * 1981-09-03 1983-12-15 Grünbeck Wasseraufbereitung GmbH, 8884 Höchstädt Dosierpumpe

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103649520A (zh) * 2011-05-13 2014-03-19 株式会社三国 高压燃料泵装置
CN103649520B (zh) * 2011-05-13 2016-05-04 株式会社三国 高压燃料泵装置
US9353716B2 (en) 2011-05-13 2016-05-31 Mikuni Corporation High-pressure fuel pump device

Also Published As

Publication number Publication date
EP0117969A3 (en) 1986-05-14
EP0117969A2 (fr) 1984-09-12
ATE34810T1 (de) 1988-06-15
EP0117969B1 (fr) 1988-06-01
DE3471721D1 (en) 1988-07-07
DE3300461A1 (de) 1984-08-30

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