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GB2036168A - Diaphragm pumps - Google Patents

Diaphragm pumps

Info

Publication number
GB2036168A
GB2036168A GB7937001A GB7937001A GB2036168A GB 2036168 A GB2036168 A GB 2036168A GB 7937001 A GB7937001 A GB 7937001A GB 7937001 A GB7937001 A GB 7937001A GB 2036168 A GB2036168 A GB 2036168A
Authority
GB
United Kingdom
Prior art keywords
diaphragm
pumping
air chamber
chamber
stroke
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
GB7937001A
Other versions
GB2036168B (en
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.)
Madan & Co Ltd C
Original Assignee
Madan & Co Ltd C
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 Madan & Co Ltd C filed Critical Madan & Co Ltd C
Publication of GB2036168A publication Critical patent/GB2036168A/en
Application granted granted Critical
Publication of GB2036168B publication Critical patent/GB2036168B/en
Expired 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
    • F04B43/0009—Special features
    • F04B43/0054—Special features particularities of the flexible members
    • 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
    • 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
    • F04B43/073—Pumps having fluid drive the actuating fluid being controlled by at least one valve
    • F04B43/0736—Pumps having fluid drive the actuating fluid being controlled by at least one valve with two or more pumping chambers in parallel

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)

Abstract

Diaphragm pumps are used for pumping liquids and comprise rods passing through a housing for effecting diaphragm return movement. This invention provides a novel diaphragm pump which avoids the use of those rods. The novel pump has an air chamber (26) and a pumping chamber (30) separated by a composite diaphragm (16, 18). Feeding compressed air to the air chamber (26) moves the diaphragm to effect a pumping stroke. The return stroke of the diaphragm is achieved by exhausting the air chamber (26) while feeding compressed air to a further air chamber formed between first (16) and second (18) membranes of the composite diaphragm. The area difference between the membranes is sufficient to make the composite membrane (16, 18) self-erecting, to draw fluid into the pumping chamber (30) ready for the next pumping stroke of the diaphragm.
GB7937001A 1977-10-11 1978-10-11 Diaphragm pumps Expired GB2036168B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4220877 1977-10-11

Publications (2)

Publication Number Publication Date
GB2036168A true GB2036168A (en) 1980-06-25
GB2036168B GB2036168B (en) 1983-04-20

Family

ID=10423332

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7937001A Expired GB2036168B (en) 1977-10-11 1978-10-11 Diaphragm pumps

Country Status (6)

Country Link
EP (1) EP0007945A1 (en)
JP (1) JPS54500006A (en)
DE (1) DE2857091C1 (en)
GB (1) GB2036168B (en)
SE (1) SE7909301L (en)
WO (1) WO1979000197A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10578098B2 (en) 2005-07-13 2020-03-03 Baxter International Inc. Medical fluid delivery device actuated via motive fluid
US11478578B2 (en) 2012-06-08 2022-10-25 Fresenius Medical Care Holdings, Inc. Medical fluid cassettes and related systems and methods

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0673651B2 (en) * 1986-10-31 1994-09-21 トリニテイ工業株式会社 Coating agent supply device
DE9308247U1 (en) * 1993-06-02 1993-09-02 Schneider, Friedhelm, 51580 Reichshof Hydraulically operated diaphragm pump
DE4327969C2 (en) * 1993-08-19 1997-07-03 Ott Kg Lewa Hydraulically driven diaphragm pump

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2323950A (en) * 1940-05-14 1943-07-13 John B Wade Proportional feeder
US2391703A (en) * 1943-03-06 1945-12-25 Infilco Inc Proportioning pump
US2675758A (en) * 1949-01-06 1954-04-20 Infilco Inc Chemical feeder
US2869474A (en) * 1954-07-24 1959-01-20 Pleuger Friedrich Wilhelm Diaphragm piston pump
FR1207196A (en) * 1958-08-29 1960-02-15 Pompes Noel Advanced pump
US3387566A (en) * 1966-01-10 1968-06-11 Ici Australia Ltd Fluid operated prime mover
FR1477595A (en) * 1966-03-02 1967-04-21 Realisations D Automatismes Et Suction and pressure dosing pump operating by pulses
GB1238020A (en) * 1967-12-18 1971-07-07
GB1234921A (en) * 1969-01-06 1971-06-09 Thomas Henry Baggaley Improvements in diaphragm pumps
DE1962151A1 (en) * 1969-12-11 1971-06-24 Cillichemie Dosing device
FR2177181A5 (en) * 1972-03-22 1973-11-02 Skm Sa

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10578098B2 (en) 2005-07-13 2020-03-03 Baxter International Inc. Medical fluid delivery device actuated via motive fluid
US10590924B2 (en) 2005-07-13 2020-03-17 Baxter International Inc. Medical fluid pumping system including pump and machine chassis mounting regime
US10670005B2 (en) 2005-07-13 2020-06-02 Baxter International Inc. Diaphragm pumps and pumping systems
US11384748B2 (en) 2005-07-13 2022-07-12 Baxter International Inc. Blood treatment system having pulsatile blood intake
US12392335B2 (en) 2005-07-13 2025-08-19 Baxter International Inc. Medical fluid pumping system having backflow prevention
US11478578B2 (en) 2012-06-08 2022-10-25 Fresenius Medical Care Holdings, Inc. Medical fluid cassettes and related systems and methods

Also Published As

Publication number Publication date
WO1979000197A1 (en) 1979-04-19
DE2857091A1 (en) 1981-01-08
GB2036168B (en) 1983-04-20
DE2857091C1 (en) 1985-09-12
SE7909301L (en) 1979-11-09
EP0007945A1 (en) 1980-02-20
JPS54500006A (en) 1979-08-09

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee