EP0260464B1 - Pompe de dosage - Google Patents

Pompe de dosage Download PDF

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Publication number
EP0260464B1
EP0260464B1 EP87111972A EP87111972A EP0260464B1 EP 0260464 B1 EP0260464 B1 EP 0260464B1 EP 87111972 A EP87111972 A EP 87111972A EP 87111972 A EP87111972 A EP 87111972A EP 0260464 B1 EP0260464 B1 EP 0260464B1
Authority
EP
European Patent Office
Prior art keywords
membrane
pump
valve
dosing
metering
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
EP87111972A
Other languages
German (de)
English (en)
Other versions
EP0260464A1 (fr
Inventor
Hans Kern
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.)
Gruenbeck Wasseraufbereitung GmbH
Original Assignee
Gruenbeck Wasseraufbereitung 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 Gruenbeck Wasseraufbereitung GmbH filed Critical Gruenbeck Wasseraufbereitung GmbH
Priority to AT87111972T priority Critical patent/ATE50321T1/de
Publication of EP0260464A1 publication Critical patent/EP0260464A1/fr
Application granted granted Critical
Publication of EP0260464B1 publication Critical patent/EP0260464B1/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
    • F04B43/00—Machines, pumps, or pumping installations having flexible working members
    • F04B43/02—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms
    • 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
    • F04B43/00—Machines, pumps, or pumping installations having flexible working members
    • F04B43/0009—Special features
    • F04B43/0045—Special features with a number of independent working chambers which are actuated successively by one mechanism
    • 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
    • F04B53/06—Venting

Definitions

  • the invention relates to a metering pump according to the first part of patent claim 1.
  • Such a metering pump is known from DE-A 2 803 470.
  • the vent valve arranged in the return line in this known metering pump is designed as a liquid throttle valve which practically only lets gases through and prevents the passage of liquids. The gases from the pump chamber can thus be conveyed back from the pump chamber into the dosing agent container during the pressure stroke. However, it cannot be prevented that gas also reaches the metering point during the pressure stroke.
  • a metering pump is known in which the diaphragm pump acts as a pre-feed pump.
  • a piston pump with the necessary piston seals is provided as a metering pump.
  • the piston seals have a limited lifespan when dosing aggressive media, so that such pumps are not suitable for dosing aggressive media.
  • the object of the invention is to provide a metering pump of the type described above, which is self-priming and self-venting.
  • the metering pump 1 has a pump head 2. This has a pump chamber 3 extending in the vertical direction. At the lower end of the pumping chamber, seen in the vertical direction, there is a suction channel 4, which is connected to a suction line 6 via a suction valve 5. The suction line 6 leads into a dosing agent container 7.
  • a riser 8 opens.
  • the upper end of the riser as seen in the vertical direction leads via a pressure valve 9 to a connection 10 that can be connected to a metering point.
  • a metering membrane 11 is clamped in the pump chamber in the manner shown in FIG.
  • the plunger has a stop 13. Between this and a fixed frame plate 14, a compression spring 15 is provided, which biases the membrane 11 in the suction position.
  • a shaft 18 is supported which carries a metering eccentric 19.
  • the end 16 of the plunger is biased against the metering eccentric 19 by the compression spring 15.
  • a transverse bore 20 opens as directly as possible at the upper end of the riser 8, that is to say directly in front of the pressure valve 9. This leads into the valve chamber 21 of a ventilation valve formed by a diaphragm pump 22. At the end of the transverse bore 20, a valve seat 23 is incorporated. In the upper region of the valve chamber 21, seen in the vertical direction, there is a riser pipe 23, which is connected to a return line 25 via a pressure valve 24. In the exemplary embodiment shown, this leads back into the dosing agent container 7.
  • the membrane is firmly connected to a tappet 26 on its side facing away from the valve chamber. Between the back of the membrane and a wall part 27 of the housing, a compression spring 28 is provided, which is biased so that the membrane is initially held in the closed position shown in FIG. 1.
  • the end of the plunger facing away from the membrane is adjustably connected to a yoke 29 by a lock nut 30.
  • a second eccentric 31 sits on the shaft 18.
  • the two eccentrics are fixedly connected to a toothed wheel 32, which is drivingly connected to a pinion 33 of a drive motor 34.
  • the second eccentric 31 is designed such that the plunger 26 is moved in the desired angular range such that the diaphragm 35 of the diaphragm pump executes a suction stroke against the compression spring 28.
  • the two eccentrics 19 and 31 are so angularly offset from one another that the cycle shown in FIG. 2 takes place.
  • the valve formed by the diaphragm pump 22 closes a small time period 36 before the pressure stroke of the metering diaphragm 11 is carried out.
  • the vent valve formed by the diaphragm pump opens a small time period 42 after the metering stroke has ended. During this period, the suction stroke 43 of the membrane 11 has already started.
  • the vent valve closes by placing the membrane 35 in the position shown in FIG. 1 a short time period 44 before the end of the suction stroke. This ensures that no gas can enter the system during the pressure stroke.
  • the locking spring 28 can be designed in such a way that it yields at a certain pressure in the pump head, so that the vent valve also acts as a pressure relief valve.
  • FIG. 3 initially has all the features shown in FIG. 1.
  • a check valve 38 is provided by the vent valve formed by the diaphragm pump 22. This accelerates the venting.
  • the plunger 26 is not pulled back into the suction position by the motor 34 but by a separately controlled lifting magnet 39.
  • the excitation of the solenoid 39 is controlled by a controller 40.
  • a sensor 45 is provided which detects the rotational position of the metering eccentric 19 and delivers an output signal to the controller 40 via this rotary position in order to ensure the synchronization of the metering stroke of the membrane 35 with the membrane 11 in the manner described above.
  • the controller 40 is designed in such a way that the membrane 35 does not follow each stroke of the membrane 11, but remains a predetermined number of working cycles of the membrane 11 in the closed position shown in FIG. It is thereby achieved that the diaphragm 35 is used much less without the pump performance of the pump as a whole being impaired.
  • the controller 40 can be set so that the number of skipped strokes through the membrane 35 is adjustable depending on the medium to be conveyed and its tendency to outgas.

Claims (9)

1. Pompe doseuse comprenant une chambre de pompage (3) munie d'une membrane (11) et destinée à refouler vers une zone de dosage, la chambre de pompage (3) pouvant être reliée à un réservoir de fluide à doser par une conduite d'aspiration (6) qui présente un clapet d'aspiration (5); une conduite de retour (25) présentant un premier clapet de refoulement (24) et une soupape de dégazage (22); ainsi qu'une sortie pouvant être reliée à une zone de dosage et qui est reliée à la conduite de retour (25) et présente un deuxième clapet de refoulement (9), caractérisée par un dispositif d'actionnement (31 à 34; 39, 40) qui actionne la soupape de dégazage (22) de manière que cette soupape soit fermée pendant toute la course de refoulement de la membrane (11).
2. Pompe doseuse selon la revendication 1, caractérisée en ce que le dispositif d'actionnement (31 à 34; 39, 40) libère la soupape de dégazage (22) pendant la course d'aspiration de la membrane (11).
3. Pompe doseuse selon l'une des revendications 1 ou 2, caractérisée en ce que le dispositif d'actionnement (31 à 34; 39, 40) ferme la coupape de dégazage (22) un court instant avant l'exécution de la course de refoulement de la membrane (11).
4. Pompe doseuse selon l'une des revendications 1 à 3, caractérisée en ce que le dispositif d'actionnement (31 à 34; 39, 40) ouvre la soupape de dégazage (22) un court instant après la fin de la course de compression de refoulement de la membrane (11).
5. Pompe doseuse selon l'une des revendications 1 à 4, caractérisée en ce que la soupape de dégazage (22) constitue une pompe munie d'une membrane (35).
6. Pompe doseuse selon l'une des revendications 1 à 5, caractérisée en ce qu'une colonne montante (8) est intercalée entre la chambre de pompage (3) et le deuxième clapet de refoulement (9).
7. Pompe doseuse selon La revendication 6, caractérisée en ce que la conduite de retour (25) débouche dans la colonne montante (8), aussi près que possible de l'extrémité supérieure de cette colonne.
8. Pompe doseuse selon l'une des revendications 5 à 7, caractérisée en ce que les deux membranes (11, 35) peuvent être entraînées par un entraînement commun.
9. Pompe doseuse selon la revendication 8, caractérisée en ce que la soupape de dégazage (22) constituant une pompe à membrane ne décrit une course d'aspiration que toutes les (n/m)èmes courses, n désignant le nombre des courses de la membrane (11 ) de la chambre de pompage et m étant un nombre entier.
EP87111972A 1986-09-19 1987-08-18 Pompe de dosage Expired - Lifetime EP0260464B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87111972T ATE50321T1 (de) 1986-09-19 1987-08-18 Dosierpumpe.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3631984A DE3631984C1 (de) 1986-09-19 1986-09-19 Dosierpumpe
DE3631984 1986-09-19

Publications (2)

Publication Number Publication Date
EP0260464A1 EP0260464A1 (fr) 1988-03-23
EP0260464B1 true EP0260464B1 (fr) 1990-02-07

Family

ID=6309976

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87111972A Expired - Lifetime EP0260464B1 (fr) 1986-09-19 1987-08-18 Pompe de dosage

Country Status (5)

Country Link
US (1) US4865525A (fr)
EP (1) EP0260464B1 (fr)
JP (1) JPS6388283A (fr)
AT (1) ATE50321T1 (fr)
DE (1) DE3631984C1 (fr)

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DE3827489C1 (fr) * 1988-08-12 1989-10-12 Gruenbeck Wasseraufbereitung Gmbh, 8884 Hoechstaedt, De
GB9023552D0 (en) * 1990-10-30 1990-12-12 Domino Printing Sciences Plc A two-stage pump for a continuous ink jet printer
DE9109288U1 (fr) * 1991-07-27 1992-09-03 Verpaco Ag, Huenenberg, Ch
DE4219663C2 (de) * 1992-06-16 1996-01-18 Prominent Dosiertechnik Gmbh Flüssigkeits-Dosierpumpe
DE4241030C1 (de) * 1992-12-05 1994-06-01 Lang Apparatebau Gmbh Dosierpumpe mit Entlüftungsventil
US5354183A (en) * 1993-02-11 1994-10-11 Elasis Sistema Ricerca Fiat Nel Mezzogiorno Societa Consortile Per Azioni Pumping device with a main pumping stage and a supply pump
US5407424A (en) * 1993-02-24 1995-04-18 Scimed Life Systems, Inc. Angioplasty perfusion pump
DE4439962A1 (de) * 1994-11-09 1996-05-15 Lang Apparatebau Gmbh Dosierpumpe mit Entlüftungseinrichtung
JP3601148B2 (ja) * 1994-12-26 2004-12-15 アイシン精機株式会社 ベローズポンプ
DE19712096C1 (de) * 1997-03-22 1998-04-02 Lang Apparatebau Gmbh Dosierpumpe zum dosierten Fördern von Flüssigkeiten
US8172546B2 (en) 1998-11-23 2012-05-08 Entegris, Inc. System and method for correcting for pressure variations using a motor
US7029238B1 (en) * 1998-11-23 2006-04-18 Mykrolis Corporation Pump controller for precision pumping apparatus
US6325932B1 (en) * 1999-11-30 2001-12-04 Mykrolis Corporation Apparatus and method for pumping high viscosity fluid
JP3718118B2 (ja) * 2000-10-05 2005-11-16 株式会社コガネイ 液体吐出装置および液体吐出方法
JP3890229B2 (ja) * 2001-12-27 2007-03-07 株式会社コガネイ 薬液供給装置および薬液供給装置の脱気方法
JP3947398B2 (ja) * 2001-12-28 2007-07-18 株式会社コガネイ 薬液供給装置および薬液供給方法
JP2005076534A (ja) * 2003-08-29 2005-03-24 Mitsumi Electric Co Ltd 排気弁装置付小型ポンプ及びその排気弁装置付小型ポンプを使用した血圧計
US11319944B2 (en) * 2003-10-30 2022-05-03 Deka Products Limited Partnership Disposable interconnected pump cassettes having first and second pump chambers with valved inlet and outlet connections
ES2359126T3 (es) * 2004-09-20 2011-05-18 Medela Holding Ag Bomba de aspiración con una válvula de seguridad.
CN101155992B (zh) 2004-11-23 2013-02-20 恩特格里公司 用于可变原位置分配系统的系统和方法
US8753097B2 (en) 2005-11-21 2014-06-17 Entegris, Inc. Method and system for high viscosity pump
WO2007061956A2 (fr) 2005-11-21 2007-05-31 Entegris, Inc. Systeme et procede pour une pompe avec facteur de forme reduit
US7850431B2 (en) 2005-12-02 2010-12-14 Entegris, Inc. System and method for control of fluid pressure
US8083498B2 (en) 2005-12-02 2011-12-27 Entegris, Inc. System and method for position control of a mechanical piston in a pump
WO2007067342A2 (fr) 2005-12-02 2007-06-14 Entegris, Inc. Système et procédé destinés à un séquencement de vannes dans une pompe
US7878765B2 (en) 2005-12-02 2011-02-01 Entegris, Inc. System and method for monitoring operation of a pump
WO2007067343A2 (fr) * 2005-12-02 2007-06-14 Entegris, Inc. Raccords et ensembles raccords peu volumineux sans joint torique
CN101356372B (zh) 2005-12-02 2012-07-04 恩特格里公司 用于在泵中进行压力补偿的系统和方法
KR101364385B1 (ko) 2005-12-02 2014-02-17 엔테그리스, 아이엔씨. 펌프 제어기를 인터페이스시키는 ｉ/ｏ 시스템, 방법 및디바이스
WO2007067339A2 (fr) * 2005-12-02 2007-06-14 Entegris, Inc. Systeme de soupape a volume fixe
US7897196B2 (en) * 2005-12-05 2011-03-01 Entegris, Inc. Error volume system and method for a pump
TWI402423B (zh) 2006-02-28 2013-07-21 Entegris Inc 用於一幫浦操作之系統及方法
US7494265B2 (en) 2006-03-01 2009-02-24 Entegris, Inc. System and method for controlled mixing of fluids via temperature
US7684446B2 (en) * 2006-03-01 2010-03-23 Entegris, Inc. System and method for multiplexing setpoints
US20140056724A1 (en) * 2012-08-27 2014-02-27 Hamilton Sundstrand Corporation Diaphragm metering pump having a degassing system
ES2706523T3 (es) * 2015-06-22 2019-03-29 Seko Spa Válvula de purga y bomba de purgado automático provista con tal válvula
JP6177850B2 (ja) * 2015-09-17 2017-08-09 株式会社オーヤラックス ポンプ装置
JP6892982B2 (ja) * 2017-02-03 2021-06-23 応研精工株式会社 ダイヤフラムポンプ
DE102018133214A1 (de) 2018-12-20 2020-06-25 Lutz-Jesco Gmbh Dosierpumpe mit integriertem Überströmventil und Ventileinsatz für eine Dosierpumpe
EP4095224A1 (fr) * 2021-05-26 2022-11-30 LANXESS Deutschland GmbH Procédé et dispositif de conservation de boissons par déaération d'une pompe

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Also Published As

Publication number Publication date
DE3631984C1 (de) 1987-12-17
ATE50321T1 (de) 1990-02-15
EP0260464A1 (fr) 1988-03-23
US4865525A (en) 1989-09-12
JPS6388283A (ja) 1988-04-19

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