EP1291524A3 - Hydraulic diaphragm pump with prestressed diaphragm - Google Patents

Hydraulic diaphragm pump with prestressed diaphragm Download PDF

Info

Publication number
EP1291524A3
EP1291524A3 EP02018670A EP02018670A EP1291524A3 EP 1291524 A3 EP1291524 A3 EP 1291524A3 EP 02018670 A EP02018670 A EP 02018670A EP 02018670 A EP02018670 A EP 02018670A EP 1291524 A3 EP1291524 A3 EP 1291524A3
Authority
EP
European Patent Office
Prior art keywords
hydraulic
zone
membrane
diaphragm
pump
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
EP02018670A
Other languages
German (de)
French (fr)
Other versions
EP1291524B1 (en
EP1291524A2 (en
Inventor
Nils Dr. Kohlhase
Waldemar Horn
Rüdiger Schnorr
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.)
Lewa GmbH
Lewa Herbert Ott GmbH and Co KG
Original Assignee
Lewa GmbH
Lewa Herbert Ott GmbH and Co KG
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 Lewa GmbH, Lewa Herbert Ott GmbH and Co KG filed Critical Lewa GmbH
Publication of EP1291524A2 publication Critical patent/EP1291524A2/en
Publication of EP1291524A3 publication Critical patent/EP1291524A3/en
Application granted granted Critical
Publication of EP1291524B1 publication Critical patent/EP1291524B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • F04B43/06—Pumps having fluid drive
    • F04B43/067—Pumps having fluid drive the fluid being actuated directly by a piston

Abstract

The hydraulic membrane pump has a membrane (1) clamped at the edges between a pump body (2) and a pump cover (3), which separates the discharge zone (4) from the hydraulic zone (5). The membrane is tensed by a spring in the suction stroke direction. The hydraulic membrane drive has an oscillating displacement piston (6), which slides in the pump body between a supply zone (8) for the hydraulic fluid and the hydraulic zone. The spring tension on the membrane is sufficiently strong to apply pressure to the hydraulic fluid in the hydraulic zone, to build up an overpressure against the discharge zone.
EP02018670A 2001-09-07 2002-08-20 Hydraulic diaphragm pump with prestressed diaphragm Expired - Lifetime EP1291524B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10143978A DE10143978B4 (en) 2001-09-07 2001-09-07 Hydraulically driven diaphragm pump with prestressed diaphragm
DE10143978 2001-09-07

Publications (3)

Publication Number Publication Date
EP1291524A2 EP1291524A2 (en) 2003-03-12
EP1291524A3 true EP1291524A3 (en) 2004-07-28
EP1291524B1 EP1291524B1 (en) 2005-11-30

Family

ID=7698108

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02018670A Expired - Lifetime EP1291524B1 (en) 2001-09-07 2002-08-20 Hydraulic diaphragm pump with prestressed diaphragm

Country Status (5)

Country Link
US (1) US6884045B2 (en)
EP (1) EP1291524B1 (en)
JP (1) JP4416149B2 (en)
AT (1) ATE311536T1 (en)
DE (2) DE10143978B4 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10322221B3 (en) * 2003-05-16 2005-01-27 Lewa Herbert Ott Gmbh + Co Leakage monitoring in the hydraulic pressure chamber of a diaphragm pump
NO20045382D0 (en) * 2004-12-09 2004-12-09 Clavis Impuls Technlogy As Method and apparatus for transporting fluid in a duct
US20080003120A1 (en) * 2006-06-30 2008-01-03 Meza Humberto V Pump apparatus and method
FR2941749A1 (en) * 2009-02-03 2010-08-06 Milton Roy Europe ELASTIC MEMBRANE PUMP WITH HYDRAULIC CONTROL
DE102010004600A1 (en) 2010-01-13 2011-07-14 Marseille, Oliver, Dr.-Ing., 52066 Arrangement with a blood pump and a gas exchanger for extracorporeal membrane oxygenation
DE102010039831B4 (en) 2010-08-26 2022-02-03 Prominent Gmbh Diaphragm pump and method for adjusting such
DE102014010108B4 (en) 2014-07-08 2016-01-28 Lewa Gmbh Hydraulically driven diaphragm pump
ITUB20151971A1 (en) * 2015-07-06 2017-01-06 Seko Spa MEMBRANE PUMP
AU2019255317B2 (en) * 2018-04-18 2023-08-10 Wanner Engineering, Inc. Device for protecting a diaphragm pump from pressure differential

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB339136A (en) * 1929-01-12 1930-12-04 Barostat Company Improvements in and relating to diaphragm devices operated by fluid pressure
US4776771A (en) * 1986-09-19 1988-10-11 Grunbeck Wasseraufbereitung Gmbh Metering pump
US5192198A (en) * 1989-08-31 1993-03-09 J. Wagner Gmbh Diaphragm pump construction
US6086340A (en) * 1999-05-11 2000-07-11 Milton Roy Company Metering diaphragm pump having a front removable hydraulic refill valve
US6276907B1 (en) * 1999-08-12 2001-08-21 Wagner Spray Tech Corporation Hydraulically driven diaphragm pump

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2546302A (en) * 1946-06-04 1951-03-27 Cooper Bessemer Corp Flexible diaphragm pump
US2642090A (en) * 1946-11-16 1953-06-16 Niles Bement Pond Co Diaphragm assembly and method of making same
US2653552A (en) * 1951-08-15 1953-09-29 Geeraert Corp High-pressure pump
DE1034030B (en) * 1955-09-22 1958-07-10 Reiners Walter Dr Ing Diaphragm pump for non-lubricating and chemically aggressive fluids, especially for pest control in agriculture
US3075468A (en) * 1960-04-06 1963-01-29 Hills Mccanna Co Hydraulically actuated diaphragm pump
US3386388A (en) * 1966-06-22 1968-06-04 Rosenberg David Hydraulically actuated pump
US4022114A (en) * 1974-07-05 1977-05-10 Refrigerating Specialties Company Flexible diaphragm construction
HU168667B (en) * 1975-02-25 1976-06-28
JPH0314930A (en) * 1989-02-28 1991-01-23 Tatsuta Electric Wire & Cable Co Ltd Coned disc spring

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB339136A (en) * 1929-01-12 1930-12-04 Barostat Company Improvements in and relating to diaphragm devices operated by fluid pressure
US4776771A (en) * 1986-09-19 1988-10-11 Grunbeck Wasseraufbereitung Gmbh Metering pump
US5192198A (en) * 1989-08-31 1993-03-09 J. Wagner Gmbh Diaphragm pump construction
US6086340A (en) * 1999-05-11 2000-07-11 Milton Roy Company Metering diaphragm pump having a front removable hydraulic refill valve
US6276907B1 (en) * 1999-08-12 2001-08-21 Wagner Spray Tech Corporation Hydraulically driven diaphragm pump

Also Published As

Publication number Publication date
US20030049145A1 (en) 2003-03-13
EP1291524B1 (en) 2005-11-30
DE10143978A1 (en) 2003-03-27
US6884045B2 (en) 2005-04-26
JP4416149B2 (en) 2010-02-17
ATE311536T1 (en) 2005-12-15
JP2003097449A (en) 2003-04-03
DE10143978B4 (en) 2005-03-03
EP1291524A2 (en) 2003-03-12
DE50205092D1 (en) 2006-01-05

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