US3605566A - Hydraulic diapharagm pump - Google Patents

Hydraulic diapharagm pump Download PDF

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Publication number
US3605566A
US3605566A US782172A US3605566DA US3605566A US 3605566 A US3605566 A US 3605566A US 782172 A US782172 A US 782172A US 3605566D A US3605566D A US 3605566DA US 3605566 A US3605566 A US 3605566A
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US
United States
Prior art keywords
hydraulic
diaphragm
diaphragms
pump
medium
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
US782172A
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English (en)
Inventor
Gerhard Vetter
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 Herbert Ott GmbH and Co KG
Original Assignee
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 Herbert Ott GmbH and Co KG filed Critical Lewa Herbert Ott GmbH and Co KG
Application granted granted Critical
Publication of US3605566A publication Critical patent/US3605566A/en
Assigned to LEWA HERBERT OTT KG reassignment LEWA HERBERT OTT KG CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). EFFECTIVE SEPTEMBER 17, 1976 Assignors: LEWA HERBERT OTT
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
    • F04B43/0009—Special features
    • F04B43/0081—Special features systems, control, safety measures
    • F04B43/009—Special features systems, control, safety measures leakage control; pump systems with two flexible members; between the actuating element and the pumped fluid

Definitions

  • the invention relates to a diaphragm pump, in which the diaphragm consists of at least two individual diaphragms. A space between the two individual diaphragms is completely filled with a hydraulic medium. The space communicates with a hydraulic tank via a conduit containing a non-return valve opening towards the hydraulic tank.
  • the invention relates, as indicated, to a diaphragm pump with hydraulic displacement drive and with a diaphragm consisting of at least two individual, superimposed, diaphragms.
  • Diaphragm pumps of this type have been used widely, particularly in the field of chemical engineering. They have been adopted especially for metering, where one diaphragm separates the actual delivery chamber from a Working chamber filled with hydraulic working medium and is actuated by the hydraulic medium displaced by a mechanical piston.
  • the monitoring of the diaphragm for damage and fractures is difficult, because, when the diaphragm is damaged, the delivery medium and the hydraulic medium may combine; this cannot be immediately detected and can lead, in view of the large quantities of hydraulic or delivery medium, to a substantial contamination of the delivery chamber or of the hydraulic chamber.
  • the monitoring and safety are of paramount importance. For this reason it has already been proposed, for example in German Pat.
  • the present invention has therefore the object of proposing a hydraulic diaphragm pump with several diaphragms acting together as a unit, and ensuring a reliable,
  • this object is realized in that the space between the individual diaphragms is completely filled with the hydraulic medium.
  • the space between the individual diaphragms communicates through a lateral connection with a hydraulic tank.
  • an intermediate diaphragm provided with slots is mounted between the working diaphragms.
  • the diaphragms have lateral tongues with connections, and a spring-loaded nonreturn valve is mounted in the connection to the hydraulic tank.
  • these are preferably welded or glued together along their edges.
  • FIG. 1 shows a partly diagrammatical cross-section of a diaphragm pump according to the invention
  • FIG. 2 shows a single diaphragm acting as intermediate diaphragm in the hydraulic diaphragm pump.
  • the inlet and outlet valves 4 and 4' for the delivery medium are located in the cylinder cover 1.
  • the hydraulic cylinder 2 contains a mechanical displacement piston 6 in a hydraulic chamber 7, containing a perforated plate 8, known in the art, against which the diaphragm 3 is supported during the suction stroke to prevent deformation.
  • the diaphragms 3a, 3b, 3c are superimposed and may be glued or welded together along the edges to facilitate the assembly.
  • the intermediate diaphragm 31 has a number of radially extending slots, of which one terminates in diametrically opposite lugs 9.
  • the diaphragms 3a and 3c embracing the intermediate diaphragm 3b are tight diaphragms of identical shape.
  • the lateral lugs 9 are equipped with connections 10 and 11.
  • the connection 11 is adapted to be closed.
  • the connection 10 communicates via a slightly spring-loaded non-return valve 12 with a tank 13 containing hydraulic oil.
  • the space between the diaphragms 3a, 3b and 3c and the non-return valve 12 is filled through the connections 10 and 11 with a suitable hydraulic medium. This is effected conveniently by drawing in fluid through a vacuum pump. Then the connection 11 is closed. The tank 13 remains partially filled so that the diaphragms are perfectly hydraulically connected and cannot lift off during the suction stroke. With the use of a suitable hydraulic medium, the suction capacity of this hydraulic pump is in no way restricted.
  • the non-return valve 12 prevents fiuid from flowing in from the tank 13.
  • the intermediate diaphragm 3b can be omitted and be replaced by an intermediate annulus connecting the outer edges of the two other diaphragms 3a and 30.
  • the diaphragms are connected in a perfect manner hydraulical ly and loaded at optimum both during the suction and during the delivery strokes. Since the reliable maintenance of this hydraulic coupling requires only the provision of the tank 13, filled with hydraulic fluid, the structural expenditure is reduced to a minimum. Functionally the diaphragms form a closed unit, whilst enabling the perfect monitoring of diaphragm fractures to be carried out. If a fracture occurs of the diaphragm in contact with the delivery medium, only a very small amount of hydraulic fluid enters the delivery chamber, owing to the smallness of the chamber 5 between the diaphragms.
  • a diaphragm pump comprising a first variable volume pump chamber communicating with a hydraulic displacement drive means and a second variable volume pump chamber for the medium to be delivered, a diaphragm means separating said first and second cham-' bers, said diaphragm means comprising at least two individual diaphragms which are hydraulically connected by a hydraulic fluid completely filling an intermediate space between the two individual diaphragms, a reservoir containing hydraulic fluid and a biased one-way valve, whereby the intermediate space completely filled with hydraulic fluid is connected to said reservoir 4- through said biased one-way valve and said valve opens in the direction of said reservoir.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
US782172A 1967-12-15 1968-12-09 Hydraulic diapharagm pump Expired - Lifetime US3605566A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR132488 1967-12-15

Publications (1)

Publication Number Publication Date
US3605566A true US3605566A (en) 1971-09-20

Family

ID=8643292

Family Applications (1)

Application Number Title Priority Date Filing Date
US782172A Expired - Lifetime US3605566A (en) 1967-12-15 1968-12-09 Hydraulic diapharagm pump

Country Status (4)

Country Link
US (1) US3605566A (de)
DE (1) DE1800018C3 (de)
FR (1) FR1552305A (de)
GB (1) GB1255164A (de)

Cited By (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4560324A (en) * 1984-05-25 1985-12-24 Clextral Automatic purger for a hydraulically controlled double diaphragm pump
US4787825A (en) * 1984-09-27 1988-11-29 Myron Mantell Failure sensing device for a diaphragm pump
US4838763A (en) * 1986-11-20 1989-06-13 Heyko Reinecker Canned motor pump
US4854823A (en) * 1987-02-14 1989-08-08 Paul Hatting Leak indicating device for centrifugal pump
US4881876A (en) * 1987-12-17 1989-11-21 Dosapro Milton Roy Device for detecting that a membrane in a membrane pump has broken
US4890988A (en) * 1986-11-20 1990-01-02 Heyko Reinecker Canned motor pump
US4934902A (en) * 1984-09-27 1990-06-19 Myron Mantell Failure sensing device for a diaphragm pump
US4971523A (en) * 1988-09-13 1990-11-20 Nordson Corporation Dual diaphragm apparatus with diaphragm assembly and rupture detection methods
US4998863A (en) * 1987-04-11 1991-03-12 Franz Klaus Union Armaturen Pumpen Gmbh & Co. Magnetic pump drive
US5188515A (en) * 1990-06-08 1993-02-23 Lewa Herbert Ott Gmbh & Co. Diaphragm for an hydraulically driven diaphragm pump
WO1993007389A1 (en) * 1991-10-07 1993-04-15 Pulsafeeder, Inc. Apparatus for controlling diaphragm extension in a diaphragm metering pump
US5983777A (en) * 1997-12-18 1999-11-16 Cassaday; Michael M. Method and apparatus for diaphragm pumping with adjustable flow
US6094970A (en) * 1998-12-15 2000-08-01 Milton Roy Company Leak detector for a pump
EP1777414A1 (de) * 2005-10-21 2007-04-25 Klaus Union GmbH & Co. KG Magnetischer Pumpenantrieb
US20120098215A1 (en) * 2010-10-22 2012-04-26 Oshkosh Corporation Pump for vehicle suspension system
US20130101445A1 (en) * 2010-03-26 2013-04-25 Promera GmbH & Co, KG Double diaphragm pump
CN103452817A (zh) * 2013-08-19 2013-12-18 米顿罗工业设备（上海）有限公司 一种可用于高温介质传输的双隔膜结构的计量隔膜泵
CN103899527A (zh) * 2014-03-26 2014-07-02 西安西热水务环保有限公司 一种计量泵双隔膜破裂报警装置
US20150076053A1 (en) * 2012-01-26 2015-03-19 Quanta Fluid Solutions Limited Dialysis Machine
US20150345487A1 (en) * 2012-12-21 2015-12-03 Tetra Laval Holdings & Finance S.A. A piston pump arrangement for hygienic processing applications
US20150354554A1 (en) * 2012-12-21 2015-12-10 Tetra Laval Holdings & Finance S.A. A piston pump arrangement for hygienic processing applications
US10221055B2 (en) 2016-04-08 2019-03-05 Oshkosh Corporation Leveling system for lift device
US20190195216A1 (en) * 2016-08-25 2019-06-27 Siemens Aktiengesellschaft Double membrane for a dust pump
US11571499B2 (en) 2015-12-30 2023-02-07 Quanta Dialysis Technologies Ltd. Dialysis machine
US11583618B2 (en) 2014-06-02 2023-02-21 Quanta Dialysis Technologies Limited Method of heat sanitization of a haemodialysis water circuit using a calculated dose
US11660382B2 (en) 2016-12-23 2023-05-30 Quanta Dialysis Technologies Limited Valve leak detection system
WO2023232689A1 (de) * 2022-06-03 2023-12-07 KSB SE & Co. KGaA Gedämpfter volumenkörper
USRE49881E1 (en) 2013-03-28 2024-03-26 Quanta Fluid Solutions Ltd. Re-use of a hemodialysis cartridge
USRE50004E1 (en) 2013-08-14 2024-06-11 Quanta Dialysis Technologies Ltd. Dual haemodialysis and haemodiafiltration blood treatment device
US12011528B2 (en) 2017-02-02 2024-06-18 Quanta Dialysis Technologies Ltd. Phased convective operation

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4025109C1 (de) * 1990-08-08 1991-11-07 J. Wagner Gmbh, 7990 Friedrichshafen, De
US5145331A (en) * 1991-07-29 1992-09-08 J. Wagner Gmbh Diaphragm pump
US6276907B1 (en) 1999-08-12 2001-08-21 Wagner Spray Tech Corporation Hydraulically driven diaphragm pump
DE10231920B4 (de) * 2002-07-15 2006-10-19 SCHÜTZE, Thomas Mehrlagen-Membran
DE10233561B4 (de) * 2002-07-24 2008-02-21 Prominent Dosiertechnik Gmbh Sicherheitsmembran für eine Membranpumpe

Cited By (43)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4560324A (en) * 1984-05-25 1985-12-24 Clextral Automatic purger for a hydraulically controlled double diaphragm pump
US4787825A (en) * 1984-09-27 1988-11-29 Myron Mantell Failure sensing device for a diaphragm pump
US4934902A (en) * 1984-09-27 1990-06-19 Myron Mantell Failure sensing device for a diaphragm pump
US4890988A (en) * 1986-11-20 1990-01-02 Heyko Reinecker Canned motor pump
US4838763A (en) * 1986-11-20 1989-06-13 Heyko Reinecker Canned motor pump
US4854823A (en) * 1987-02-14 1989-08-08 Paul Hatting Leak indicating device for centrifugal pump
US4998863A (en) * 1987-04-11 1991-03-12 Franz Klaus Union Armaturen Pumpen Gmbh & Co. Magnetic pump drive
US4881876A (en) * 1987-12-17 1989-11-21 Dosapro Milton Roy Device for detecting that a membrane in a membrane pump has broken
US4971523A (en) * 1988-09-13 1990-11-20 Nordson Corporation Dual diaphragm apparatus with diaphragm assembly and rupture detection methods
AU618126B2 (en) * 1988-09-13 1991-12-12 Nordson Corporation A diaphragm pump
US5188515A (en) * 1990-06-08 1993-02-23 Lewa Herbert Ott Gmbh & Co. Diaphragm for an hydraulically driven diaphragm pump
WO1993007389A1 (en) * 1991-10-07 1993-04-15 Pulsafeeder, Inc. Apparatus for controlling diaphragm extension in a diaphragm metering pump
US5249932A (en) * 1991-10-07 1993-10-05 Erik Van Bork Apparatus for controlling diaphragm extension in a diaphragm metering pump
US5983777A (en) * 1997-12-18 1999-11-16 Cassaday; Michael M. Method and apparatus for diaphragm pumping with adjustable flow
US6094970A (en) * 1998-12-15 2000-08-01 Milton Roy Company Leak detector for a pump
EP1777414A1 (de) * 2005-10-21 2007-04-25 Klaus Union GmbH & Co. KG Magnetischer Pumpenantrieb
US20130101445A1 (en) * 2010-03-26 2013-04-25 Promera GmbH & Co, KG Double diaphragm pump
US8821130B2 (en) 2010-10-22 2014-09-02 Oshkosh Corporation Pump for vehicle suspension system
US8596648B2 (en) * 2010-10-22 2013-12-03 Oshkosh Corporation Pump for vehicle suspension system
US20120098215A1 (en) * 2010-10-22 2012-04-26 Oshkosh Corporation Pump for vehicle suspension system
US9581153B2 (en) 2010-10-22 2017-02-28 Oshkosh Corporation Pump for vehicle suspension system
US20150076053A1 (en) * 2012-01-26 2015-03-19 Quanta Fluid Solutions Limited Dialysis Machine
US9833553B2 (en) * 2012-01-26 2017-12-05 Quanta Fluid Solutions Ltd. Dialysis machine
US20150345487A1 (en) * 2012-12-21 2015-12-03 Tetra Laval Holdings & Finance S.A. A piston pump arrangement for hygienic processing applications
US20150354554A1 (en) * 2012-12-21 2015-12-10 Tetra Laval Holdings & Finance S.A. A piston pump arrangement for hygienic processing applications
US10018192B2 (en) * 2012-12-21 2018-07-10 Tetra Laval Holdings & Finance S.A. Piston pump arrangement for hygienic processing applications
USRE49881E1 (en) 2013-03-28 2024-03-26 Quanta Fluid Solutions Ltd. Re-use of a hemodialysis cartridge
USRE50004E1 (en) 2013-08-14 2024-06-11 Quanta Dialysis Technologies Ltd. Dual haemodialysis and haemodiafiltration blood treatment device
CN103452817A (zh) * 2013-08-19 2013-12-18 米顿罗工业设备（上海）有限公司 一种可用于高温介质传输的双隔膜结构的计量隔膜泵
CN103452817B (zh) * 2013-08-19 2016-03-30 米顿罗工业设备（上海）有限公司 一种可用于高温介质传输的双隔膜结构的计量隔膜泵
CN103899527A (zh) * 2014-03-26 2014-07-02 西安西热水务环保有限公司 一种计量泵双隔膜破裂报警装置
US11583618B2 (en) 2014-06-02 2023-02-21 Quanta Dialysis Technologies Limited Method of heat sanitization of a haemodialysis water circuit using a calculated dose
US11571499B2 (en) 2015-12-30 2023-02-07 Quanta Dialysis Technologies Ltd. Dialysis machine
US10934145B2 (en) 2016-04-08 2021-03-02 Oshkosh Corporation Leveling system for lift device
US11565920B2 (en) 2016-04-08 2023-01-31 Oshkosh Corporation Leveling system for lift device
US11679967B2 (en) 2016-04-08 2023-06-20 Oshkosh Corporation Leveling system for lift device
US10221055B2 (en) 2016-04-08 2019-03-05 Oshkosh Corporation Leveling system for lift device
US12091298B2 (en) 2016-04-08 2024-09-17 Oshkosh Corporation Leveling system for lift device
US10781807B2 (en) * 2016-08-25 2020-09-22 Dipl. Ing. Ernst Schmitz Gmbh & Co. Kg Maschinen Und Apparatebau Double membrane for a dust pump
US20190195216A1 (en) * 2016-08-25 2019-06-27 Siemens Aktiengesellschaft Double membrane for a dust pump
US11660382B2 (en) 2016-12-23 2023-05-30 Quanta Dialysis Technologies Limited Valve leak detection system
US12011528B2 (en) 2017-02-02 2024-06-18 Quanta Dialysis Technologies Ltd. Phased convective operation
WO2023232689A1 (de) * 2022-06-03 2023-12-07 KSB SE & Co. KGaA Gedämpfter volumenkörper

Also Published As

Publication number Publication date
DE1800018B2 (de) 1975-04-03
FR1552305A (de) 1969-01-03
GB1255164A (en) 1971-12-01
DE1800018A1 (de) 1969-08-07
DE1800018C3 (de) 1975-11-20

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Legal Events

Date Code Title Description
AS Assignment

Owner name: LEWA HERBERT OTT KG

Free format text: CHANGE OF NAME;ASSIGNOR:LEWA HERBERT OTT;REEL/FRAME:004375/0501

Effective date: 19850104