EP0354484B1 - Dosierpumpe - Google Patents

Dosierpumpe Download PDF

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Publication number
EP0354484B1
EP0354484B1 EP89114391A EP89114391A EP0354484B1 EP 0354484 B1 EP0354484 B1 EP 0354484B1 EP 89114391 A EP89114391 A EP 89114391A EP 89114391 A EP89114391 A EP 89114391A EP 0354484 B1 EP0354484 B1 EP 0354484B1
Authority
EP
European Patent Office
Prior art keywords
pump
dosing
stroke
metering
ventilation device
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
EP89114391A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0354484A1 (de
Inventor
Hans Dipl.-Ing. Kern (Fh)
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 AT89114391T priority Critical patent/ATE71434T1/de
Publication of EP0354484A1 publication Critical patent/EP0354484A1/de
Application granted granted Critical
Publication of EP0354484B1 publication Critical patent/EP0354484B1/de
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
    • 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
    • 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
    • F04B43/04—Pumps having electric drive
    • 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
    • F04B7/00—Piston machines or pumps characterised by having positively-driven valving
    • F04B7/0042—Piston machines or pumps characterised by having positively-driven valving with specific kinematics of the distribution member
    • F04B7/0053—Piston machines or pumps characterised by having positively-driven valving with specific kinematics of the distribution member for reciprocating distribution members

Definitions

  • the invention relates to a metering pump according to the first part of patent claim 1.
  • Such a metering pump is known from US-A-4236881.
  • the venting device is coupled to the diaphragm pump in such a way that the venting device is closed during the suction stroke of the diaphragm pump and can be opened via an adjustable part of the pressure stroke of the diaphragm pump. The metering takes place in the remaining part of the pressure stroke.
  • a dosing pump is known from DE-C-3631984, in which the venting device closes a small time period before the pressure stroke of the dosing membrane is carried out and opens a small time period after the dosing stroke has ended.
  • a pressure valve is provided in the return line. This means that the return is not exactly defined.
  • the object of the invention is to improve the ventilation in a metering pump of the type described in the introduction.
  • the return should be precisely defined.
  • 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 diaphragm pump with a clamped-in metering diaphragm 11, which is firmly connected to a plunger 12 on its rear side, is provided.
  • the plunger has a stop 13.
  • a compression spring 15 is provided, which biases the membrane 11 in the suction position.
  • a motor 34 is fastened in the pump housing 17 connected to the pump head 2 in the manner shown in FIG. 1. This has a motor-driven shaft 18 which carries a metering eccentric 19. The end 16 of the plunger 12 is biased by the compression spring 15 on the metering eccentric 19.
  • a cross 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 device formed by a membrane valve 22. At the end of the transverse bore 20, a valve seat 23 is incorporated. A return line 25 connects in the upper region of the valve chamber 21 as seen in the vertical direction. In the exemplary embodiment shown, this leads back into the dosing agent container 7.
  • the membrane of the membrane valve 22 is firmly connected on its side facing away from the valve chamber with a tappet 26. Between the rear 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 has a yoke 29.
  • a second eccentric 31 running on the shaft 18 runs in the yoke 29.
  • the eccentric 31 is connected to the shaft 18 via an intermediate gear 32.
  • the second eccentric 31 is designed such that the plunger 26 is moved in the desired angular range so that the membrane of the diaphragm valve 22 executes a stroke against the compression spring 28.
  • the two eccentrics 19 and 31 are so angularly offset from each other that the cycle shown in Fig. 4a takes place.
  • the diaphragm valve 22 is open during a metering stroke of the metering membrane 11.
  • the vent valve formed by the diaphragm valve closes. In this way it is ensured that gas present during the metering stroke exits via the return line.
  • the ratio determined by the design of the intermediate gear 32 is selected such that the diaphragm valve 22 does not release the return flow with every metering stroke but with every nth pressure stroke, where n is an integer smaller than the number of Dosing strokes. n also determines the dosing quantity. E.g. Vented every second stroke, halves the original dosage. If the air is only vented every tenth stroke, the dosing quantity is reduced by only 1/10.
  • the embodiment shown in FIG. 2 differs from that shown in FIG. 1 only in that the diaphragm valve 22 is actuated by a separate solenoid 39.
  • 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 via this rotary position to the controller 40 in order to ensure the synchronization of the metering stroke of the diaphragm valve 22 with the diaphragm 11 in the manner described above.
  • the controller 40 is designed such that, as in the first embodiment, the venting takes place only on every n-th metering stroke, as can be seen from FIG. 4b.
  • a second lifting magnet 41 is provided instead of the motor 34 with shaft 18 and metering eccentric 19.
  • the actuation of the two solenoids 39 and 41 takes place via the control 40.
  • the temporal work sequence for the membrane 11 and the membrane of the membrane valve 22 takes place in the same way as in the previous two exemplary embodiments, as can be seen from FIG. 4c.
  • the venting stroke runs so synchronously with the respective metering stroke that the venting valve is open during the nth metering stroke, otherwise it is closed.
  • the number n can be set via the controller 40.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)
  • Medicines Containing Plant Substances (AREA)
EP89114391A 1988-08-12 1989-08-03 Dosierpumpe Expired - Lifetime EP0354484B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89114391T ATE71434T1 (de) 1988-08-12 1989-08-03 Dosierpumpe.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3827489A DE3827489C1 (ko) 1988-08-12 1988-08-12
DE3827489 1988-08-12

Publications (2)

Publication Number Publication Date
EP0354484A1 EP0354484A1 (de) 1990-02-14
EP0354484B1 true EP0354484B1 (de) 1992-01-08

Family

ID=6360773

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89114391A Expired - Lifetime EP0354484B1 (de) 1988-08-12 1989-08-03 Dosierpumpe

Country Status (5)

Country Link
US (1) US4990066A (ko)
EP (1) EP0354484B1 (ko)
JP (1) JPH02140470A (ko)
AT (1) ATE71434T1 (ko)
DE (2) DE3827489C1 (ko)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4219663A1 (de) * 1992-06-16 1993-12-23 Prominent Dosiertechnik Gmbh Flüssigkeits-Dosierpumpe
DE4219664A1 (de) * 1992-06-16 1993-12-23 Prominent Dosiertechnik Gmbh Fördereinheit für eine Verdrängerdosierpumpe

Families Citing this family (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9023552D0 (en) * 1990-10-30 1990-12-12 Domino Printing Sciences Plc A two-stage pump for a continuous ink jet printer
US5188516A (en) * 1991-09-20 1993-02-23 Huang Yuh T Hydraulic/pneumatic pump
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
DE19712096C1 (de) * 1997-03-22 1998-04-02 Lang Apparatebau Gmbh Dosierpumpe zum dosierten Fördern von Flüssigkeiten
US6371740B1 (en) * 1999-05-11 2002-04-16 Jansen's Aircraft Systems Controls, Inc. Jet engine fuel delivery system with non-pulsating diaphragm fuel metering pump
AUPQ616200A0 (en) * 2000-03-10 2000-03-30 Speight, Christopher Chemical metering pump
EP1132616A1 (de) * 2000-03-10 2001-09-12 BMO Treuhand und Verwaltung AG Dosierpumpe
DE10044609B4 (de) * 2000-09-09 2004-11-04 Siemens Ag Kraftstofffördereinheit
JP2005076535A (ja) * 2003-08-29 2005-03-24 Mitsumi Electric Co Ltd 排気弁装置及び血圧計に用いられる排気弁装置
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
US7544048B2 (en) * 2003-09-04 2009-06-09 Grigori Lishanski Universal vibratory pump
JP2005204903A (ja) * 2004-01-22 2005-08-04 Mitsumi Electric Co Ltd 血圧計用ポンプユニットの強制排気機構
US7140847B2 (en) * 2004-08-11 2006-11-28 The Boc Group, Inc. Integrated high vacuum pumping system
JP4723218B2 (ja) * 2004-09-10 2011-07-13 シーケーディ株式会社 薬液供給用ポンプユニット
EP2194270B1 (de) * 2008-12-05 2013-06-12 ebm-papst St. Georgen GmbH & Co. KG Dosierpumpe
DE102008061904A1 (de) * 2008-12-15 2010-06-17 Alldos Eichler Gmbh Verfahren und Vorrichtung zur Entgasung des Förderraums einer Dosierpumpe
WO2010085840A1 (en) * 2009-01-27 2010-08-05 Doig Ian D Pumps with extended surface valves and vent system
AU2010256350B2 (en) 2009-06-02 2015-11-12 Topcon Precision Agriculture Pty Ltd Vehicle guidance system
US20120107150A1 (en) * 2010-11-02 2012-05-03 Bogdan Pawlak Radial Diaphragm Pump
JP5816446B2 (ja) * 2011-03-22 2015-11-18 株式会社川本製作所 給水ユニット
US10107279B2 (en) 2012-12-10 2018-10-23 Kongsberg Automotive Ab Unitary fluid flow apparatus for inflating and deflating a device
DE102014204478B4 (de) 2013-03-11 2023-06-15 Herrmann Gmbh & Co. Kg Mikrodosierpumpe und Verfahren hierfür
US10697447B2 (en) * 2014-08-21 2020-06-30 Fenwal, Inc. Magnet-based systems and methods for transferring fluid
DE102014112833A1 (de) * 2014-09-05 2016-03-10 Prominent Gmbh Verdrängerpumpe mit Fluidreservoir
CN105221380A (zh) * 2015-09-29 2016-01-06 苏州巧泰精密机械有限公司 计量泵
DE102017121274B3 (de) * 2017-09-14 2019-02-21 Wollin Gmbh Sprühdüse für ein Sprühwerkzeug
WO2019161259A1 (en) * 2018-02-15 2019-08-22 Jacobsen Innovations, Inc. Digital hydraulic system
DE102018133214A1 (de) * 2018-12-20 2020-06-25 Lutz-Jesco Gmbh Dosierpumpe mit integriertem Überströmventil und Ventileinsatz für eine Dosierpumpe
CN111577568B (zh) * 2020-06-02 2023-01-17 威海东椿电子有限公司 一种同步带定量泵及方法
DE102020119502A1 (de) 2020-07-23 2022-01-27 Washtec Holding Gmbh Verfahren zum betreiben einer dosierpumpe in einem flüssigkeitsversorgungssystem
CN112343803B (zh) * 2020-11-03 2022-05-13 常州拓川泵业科技有限公司 一种旋转推力式计量泵

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4734891U (ko) * 1971-05-11 1972-12-18
DE2318713A1 (de) * 1973-04-13 1974-10-24 Bayer Ag Dosierpumpe mit selbsttaetiger entluefung
US4236881A (en) * 1978-05-03 1980-12-02 Ecodyne Corporation Liquid metering pump
US4453931A (en) * 1980-08-01 1984-06-12 Oximetrix, Inc. Intravenous metering device
DE3410529A1 (de) * 1984-03-22 1985-10-03 Fa. J. Eberspächer, 7300 Esslingen Steuereinrichtung fuer eine dosierpumpe
JPS62228683A (ja) * 1986-03-31 1987-10-07 Keihin Seiki Mfg Co Ltd ダイヤフラム式電磁ポンプ
DE3631984C1 (de) * 1986-09-19 1987-12-17 Hans Ing Kern Dosierpumpe
DE3631982C1 (de) * 1986-09-19 1988-02-04 Hans Ing Kern Dosierpumpe
DE8801774U1 (de) * 1988-02-11 1988-05-11 Brown, Gary, Dipl.-Ing., 6454 Bruchköbel Förder- und Dosierpumpe für Flüssigkeiten

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4219663A1 (de) * 1992-06-16 1993-12-23 Prominent Dosiertechnik Gmbh Flüssigkeits-Dosierpumpe
DE4219664A1 (de) * 1992-06-16 1993-12-23 Prominent Dosiertechnik Gmbh Fördereinheit für eine Verdrängerdosierpumpe

Also Published As

Publication number Publication date
DE3827489C1 (ko) 1989-10-12
US4990066A (en) 1991-02-05
JPH02140470A (ja) 1990-05-30
ATE71434T1 (de) 1992-01-15
DE58900696D1 (de) 1992-02-20
EP0354484A1 (de) 1990-02-14

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