EP0968370B1 - Dosierpumpe zum dosierten fördern von flüssigkeiten - Google Patents

Dosierpumpe zum dosierten fördern von flüssigkeiten Download PDF

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Publication number
EP0968370B1
EP0968370B1 EP98913716A EP98913716A EP0968370B1 EP 0968370 B1 EP0968370 B1 EP 0968370B1 EP 98913716 A EP98913716 A EP 98913716A EP 98913716 A EP98913716 A EP 98913716A EP 0968370 B1 EP0968370 B1 EP 0968370B1
Authority
EP
European Patent Office
Prior art keywords
valve
membrane
pump
liquid
suction
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
EP98913716A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0968370A1 (de
Inventor
Herbert Hunklinger
Klaus Rutz
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
Application filed by Lang Apparatebau GmbH filed Critical Lang Apparatebau GmbH
Publication of EP0968370A1 publication Critical patent/EP0968370A1/de
Application granted granted Critical
Publication of EP0968370B1 publication Critical patent/EP0968370B1/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

Definitions

  • the invention relates to a metering pump for metered delivery of liquids with a suction valve that enters a suction pipe coming from a suction tank is installed, with a pump chamber behind it, the displacement can be changed by means of a pumping goose, with one to the metering line leading pressure valve, one located at the top of the pump Venting device with a check valve and with one in a vent line built-in, flow-actuated ventilation and bypass valve, whose response behavior depends on the physical state of the fluid present, this valve is open in the idle state, only during the pressure stroke closes when there is liquid on the valve and has an elastic membrane.
  • Such a metering pump is known from DE 42 19 663 C2.
  • the membrane the vent valve has an opening acting as a throttle with such Diameter that the membrane is not deflected when gases flow through it will, but if liquid is applied to the membrane during the pressure stroke moved and in this way the valve outlet is closed.
  • the liquid in the pump chamber can both during of the pressure and during the suction stroke the gas contained in it to the Submit vent line.
  • the fluid when the fluid is completely deaerated it closes the membrane so that only a little liquid gets into the vent line.
  • a backflow of gases from the vent line into the pump chamber is prevented by a non-return valve, which is located behind the Membrane is arranged.
  • a small amount always flows during the venting Part of the liquid through the check valve in the vent line and to Suction tank back. After venting, it is wetted with the liquid Check valve surrounded by gas or air, the liquid gradually dries. Difficulties often arise because they are partially dry Liquid residues, especially those that tend to crystallize Liquids cause the valve member to stick to the valve seat of the Check valve.
  • the gas pressure is sufficient for a new venting process on the check valve is usually not sufficient to open the valve.
  • Another metering pump for metering liquids is from the DE 42 41 030 C1 known.
  • the pump also has a vent and Return line to the suction tank, but the vent valve is inside the Flow path from the pump chamber to the liquid outlet arranged.
  • the vent line is closed by a closing body when the fluid is vented closed, which is connected to a control membrane via support arms.
  • the vent valve is only from the pressure acting on the membrane, but not from the state of matter of the fluid present. The venting speed at this pump depends on the size of the control diaphragm.
  • the invention has for its object the susceptibility to failure of a pump significantly reduce the type mentioned.
  • This object is achieved in that the membrane with a distance arranged closing body is connected to the when the membrane is deflected Vent line closes, and that the check valve between the Membrane and the closing body is arranged.
  • the membrane is used in the Pump according to the invention not as a closing body, but only as Control for such a body.
  • its valve member e.g. B. a ball
  • vented liquid and thus closed vent line is always surrounded by liquid, so that the valve member too If the pump is operated with vented liquid for a long time, do not touch the valve seat can stick.
  • the space between the membrane and the closing body remains filled with the liquid until the non-deaerated liquid again is sucked in, the membrane returns to its rest position and thus the Closing body opens the vent line so that the gas can escape.
  • the membrane is by its own bias or alternatively or additionally held in this starting position by a spring.
  • This power Response value of the valve specified. This value is chosen so that the Diaphragm only works in the pump room when the liquid is vented.
  • a particular advantage of the metering pump according to the invention is that Particularly quick venting, since there is no control output when the fluid is not vented on the membrane is required to open the vent line. Necessary is only the relatively low control output on the check valve.
  • the dependence of the response behavior of the vent valve on the state of aggregation of the fluid present is preferably achieved in that the The membrane forms a closed surface except for a throttle bore.
  • the diameter of the bore is based on the fluid and the preload Membrane tuned so that the bore is sufficiently high Flow resistance for the liquid and the membrane during the pressure stroke is operated. The flow resistance is too low for an applied gas Lift off the membrane to reach its seat.
  • the piston pump has an intake line 12, which is not shown Suction container for the liquid to be conveyed is connected to a metering line 13 and an inner pump chamber 7 arranged between the two lines.
  • a pumping membrane that changes the volume of the pump chamber 7 is used for pumping 6 moved by a motor, not shown, in the direction of the arrows.
  • a suction valve is provided, the one as a ball formed valve member 8 by a compression spring 14 in its closed position is held.
  • a corresponding metering valve at the inlet of metering line 13 also has a valve ball 9, which is on its by a compression spring 15 Valve seat is pressed.
  • the pump chamber 7 is in the upper part of the pump with a venting device connected via a vent line 10 to the not shown Intake tank is returned.
  • the venting unit is shown on an enlarged scale in FIG. She points two valves on, a diaphragm valve and a check valve with a valve ball 2.
  • the diaphragm valve consists of a diaphragm 5 with a throttle acting bore 3.
  • the membrane serves as a control for one with it closing body 4 connected via support arms 1, which is the actual valve member forms. This is between the membrane 5 and the closing body 4 Check valve arranged.
  • the Diaphragm 5 by its bias, with a compression spring also being provided can be in the rest position and lies flat on its valve seat.
  • the ball 2 of the check valve closes the bore 3 in the membrane, but the closing body 4 is lifted from its valve seat 11 and gives the Vent line 10 free.
  • the movement of the conveyor membrane 6 to the right (FIG 1) increases the volume of the pump chamber 7, the valve ball 8 of the Intake valve stands out against the compression spring 14 from its valve seat, and Liquid, air or both is sucked into the pump chamber 7.
  • the pressure valve 9 is closed.
  • the negative pressure in the pump chamber 7 acts on the relatively large area of the membrane 5 and in the direction of the bias Membrane so that it remains in its rest position.
  • FIG. 4 shows the pressure position of the metering pump when the pump head is vented.
  • the Valve ball 8 of the intake valve is in turn closed.
  • By the bigger one Backflow of the liquid at the throttle bore 3 of the membrane 5 rises Membrane from its flat seat upwards and presses the closing body 4th against its seat 11 so that the vent line 10 is closed.
  • Corresponding the area of the membrane 5 and its path increases Volume of the pump chamber 7.
  • the valve ball 9 of the metering valve lifts from its valve seat against the Force of the compression spring 15, since now with completely deaerated liquid filled pump chamber 7 a sufficient pressure acts on the ball 9.
  • the Liquid is metered into the metering line 13.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)
  • Nozzles (AREA)
EP98913716A 1997-03-22 1998-03-13 Dosierpumpe zum dosierten fördern von flüssigkeiten Expired - Lifetime EP0968370B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19712096 1997-03-22
DE19712096A DE19712096C1 (de) 1997-03-22 1997-03-22 Dosierpumpe zum dosierten Fördern von Flüssigkeiten
PCT/EP1998/001458 WO1998042983A1 (de) 1997-03-22 1998-03-13 Dosierpumpe zum dosierten fördern von flüssigkeiten

Publications (2)

Publication Number Publication Date
EP0968370A1 EP0968370A1 (de) 2000-01-05
EP0968370B1 true EP0968370B1 (de) 2001-12-19

Family

ID=7824306

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98913716A Expired - Lifetime EP0968370B1 (de) 1997-03-22 1998-03-13 Dosierpumpe zum dosierten fördern von flüssigkeiten

Country Status (6)

Country Link
US (1) US6168390B1 (no)
EP (1) EP0968370B1 (no)
AT (1) ATE211221T1 (no)
DE (2) DE19712096C1 (no)
NO (1) NO994581D0 (no)
WO (1) WO1998042983A1 (no)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8968237B2 (en) 2009-01-19 2015-03-03 Mitsubishi Gas Chemical Company, Inc. Method for injecting drug into living body by electrospraying and device thereof
EP4095224A1 (de) * 2021-05-26 2022-11-30 LANXESS Deutschland GmbH Verfahren und vorrichtung zur konservierung von getränken mit pumpenentlüftung

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10044609B4 (de) * 2000-09-09 2004-11-04 Siemens Ag Kraftstofffördereinheit
US6568926B1 (en) * 2001-10-31 2003-05-27 The Gorman-Rupp Company Fluid metering pump
US7140847B2 (en) * 2004-08-11 2006-11-28 The Boc Group, Inc. Integrated high vacuum pumping system
DE102012102088A1 (de) * 2012-03-13 2013-09-19 Prominent Dosiertechnik Gmbh Verdrängerpumpe mit Zwangsentlüftung
DE102014112833A1 (de) * 2014-09-05 2016-03-10 Prominent Gmbh Verdrängerpumpe mit Fluidreservoir
WO2016207788A1 (en) * 2015-06-22 2016-12-29 Seko S.P.A. Bleed valve and self-bleeding pump provided with such valve
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
DE102018133214A1 (de) * 2018-12-20 2020-06-25 Lutz-Jesco Gmbh Dosierpumpe mit integriertem Überströmventil und Ventileinsatz für eine Dosierpumpe
AU2022381333A1 (en) 2021-11-04 2024-03-28 Lanxess Deutschland Gmbh Device and method for feeding a preservative into a beverage with pressure sensors

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH457146A (de) * 1967-11-20 1968-05-31 Glutz Blotzheim Nachfolger Ag Elektromagnetische Schwingankerpumpe
GB2177183B (en) * 1985-07-05 1989-07-19 Mpl Pumps Limited Valve
DE3631984C1 (de) * 1986-09-19 1987-12-17 Hans Ing Kern Dosierpumpe
DE3827489C1 (no) * 1988-08-12 1989-10-12 Gruenbeck Wasseraufbereitung Gmbh, 8884 Hoechstaedt, De
US4951701A (en) 1989-07-17 1990-08-28 Vernay Laboratories, Inc. Combination air vent and overpressure valve
DE4130166C1 (no) * 1991-09-11 1993-03-11 Lang Apparatebau Gmbh, 8227 Siegsdorf, De
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
DE4439962A1 (de) * 1994-11-09 1996-05-15 Lang Apparatebau Gmbh Dosierpumpe mit Entlüftungseinrichtung

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8968237B2 (en) 2009-01-19 2015-03-03 Mitsubishi Gas Chemical Company, Inc. Method for injecting drug into living body by electrospraying and device thereof
EP4095224A1 (de) * 2021-05-26 2022-11-30 LANXESS Deutschland GmbH Verfahren und vorrichtung zur konservierung von getränken mit pumpenentlüftung
WO2022248514A1 (de) * 2021-05-26 2022-12-01 Lanxess Deutschland Gmbh Verfahren und vorrichtung zur konservierung von getränken mit pumpenentlüftung

Also Published As

Publication number Publication date
EP0968370A1 (de) 2000-01-05
ATE211221T1 (de) 2002-01-15
DE19712096C1 (de) 1998-04-02
US6168390B1 (en) 2001-01-02
DE59802532D1 (de) 2002-01-31
WO1998042983A1 (de) 1998-10-01
NO994581L (no) 1999-09-21
NO994581D0 (no) 1999-09-21

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