US3881846A - Fluid pump with resilient pumping membrane - Google Patents

Fluid pump with resilient pumping membrane Download PDF

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Publication number
US3881846A
US3881846A US385853A US38585373A US3881846A US 3881846 A US3881846 A US 3881846A US 385853 A US385853 A US 385853A US 38585373 A US38585373 A US 38585373A US 3881846 A US3881846 A US 3881846A
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US
United States
Prior art keywords
series
membrane
cavities
pockets
pumping
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
US385853A
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English (en)
Inventor
Gerald E Kashmerick
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.)
Outboard Marine Corp
Original Assignee
Outboard Marine Corp
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 Outboard Marine Corp filed Critical Outboard Marine Corp
Priority to US385853A priority Critical patent/US3881846A/en
Priority to CA194,950A priority patent/CA1005276A/en
Priority to JP49086842A priority patent/JPS587836B2/ja
Application granted granted Critical
Publication of US3881846A publication Critical patent/US3881846A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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
    • F04B43/0045—Special features with a number of independent working chambers which are actuated successively by one mechanism
    • 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
    • F04B43/08—Machines, pumps, or pumping installations having flexible working members having tubular flexible members

Definitions

  • ABSTRACT Disclosed herein is a fluid pump comprising a housing having therein a pocket, a pumping membrane of resilient material and including therein a pumping cavity located in the housing pocket, together with one-way fluid inlet and outlet valves connected to the opposite ends of the pumping membrane and means for periodically squeezing the pumping cavity within the pocket so as to reduce the volume of the cavity and thereafter permitting expansion of the cavity to thereby induce fluid flow from the membrane through the outlet valve in response to squeezing of the cavity and to induce fluid into the cavity through the inlet valve in response to expansion of the cavity,
  • the invention relates generally to pumps and more particularly to pumps including a resilient membrane containing the fluid being pumped.
  • the invention provides a fluid pump including a housing having therein a pocket, a pumping membrane or member of resilient material located in the housing pocket and including therein a pumping cavity, a oneway fluid inlet valve connected to one end of the pumping cavity, a one-way outlet fluid valve connected to the other end of the pumping cavity, and means for periodically squeezing the membrane within the pocket so as to reduce the volume of the cavity and thereafter permitting expansion of the cavity to thereby induce fluid outflow from the cavity through the outlet valve in response to squeezing of the membrane and to induce fluid inflow into the cavity through the inlet valve in response to expansion of the cavity.
  • the housing includes a plurality of inwardly open pockets arranged in a circular array
  • the membrane includes a like plurality of cavities located in the pockets, and a series of inlet and outlet valves are provided, one inlet and one outlet valve for each cavity.
  • the means for periodically squeezing the membrane and thereafter permitting expansion of the cavities comprises a drive shaft extending through the housing in concentric relation to the array of pockets, a cylindrical cam element mounted on the drive shaft in excentric relation thereto and for common rotation therewith, a bearing located on the outer surface of the cam element, and a hollow cylindrical member including an outer surface bonded to the membrane and an inner surface in engagement with the bearing.
  • One of the principal features of the invention is the provision of a fluid pump in which there is no rubbing between fluid contacting components.
  • Another of the principal features of the invention is the provision of a fluid pump having dry suction ability.
  • Still another of the principal features of the invention is the provision of a fluid pump which provides pumping action without encountering high wear and heat generation when started dry and without experiencing high wear when pumping abrasive liquids.
  • Still another of the principal features of the invention is the provision of a fluid pump including a pumping membrane which is constructed of resilient material, such as rubber. and which includes a plurality of elongated cavities extending between one-way inlet and outlet valves and which are periodically squeezed in the direction transverse to the elongation of the cavities and then released to effect flow through the cavities from the inlet valves and out the outlet valves.
  • a pumping membrane which is constructed of resilient material, such as rubber. and which includes a plurality of elongated cavities extending between one-way inlet and outlet valves and which are periodically squeezed in the direction transverse to the elongation of the cavities and then released to effect flow through the cavities from the inlet valves and out the outlet valves.
  • FIG. 1 is a diametrical sectional view of a fluid pump in accordance with the invention.
  • FIG. 2 is a sectional view taken along line 22 of FIG. 1.
  • FIG. 3 is a sectional view taken along line 3-3 of FIG. I.
  • FIG. 4 is a sectional view taken-along line 4-4 of FIG. 1.
  • a fluid pump 11 which em' bodies the invention, which includes a housing 13 having therein a pocket 15, a pumping membrane 17 of resilient material having a pumping cavity 19 located in the housing pocket 15, a one-way fluid inlet valve 2l connected to the pumping cavity 19, a one-way fluid outlet valve 23 connected to pumping cavity 19, and
  • the housing 13 is formed of two sections or members 29 and 31 and includes a generally cylindrical outer sur-' face 33 and a central part or portion 35 with an inner surface defining a series of elongated, radially inwardly open pockets 15 arranged in a. generally evenly spaced, circular array. Any number and form'of pockets can be employed. In the illustrated construction, six generally which are preferably circular and which are aligned with and communicate with the pockets 15.
  • the end of the housing 13 shown to the: left in FIG. 1 is provided with a housing end member or cover 41 including an axially inwardly opening, fluid outlet manifold passage 43 communicating with the adjacent series of openings 37 and with an outlet (not shown) adapted to communicate with exterior piping.
  • the housing 13 is provided with a valve retainer 51 which includes a series of counterbored openings 53 in alignment with and communicating with the adjacent series of openings 37 in the adjacent housing end, together with an axially outwardly open, common fluid inlet passage 55 which communicates with the openings 53 and has an inlet (not shown) adapted to be connected to a source of fluid to be pumped.
  • a valve retainer 51 which includes a series of counterbored openings 53 in alignment with and communicating with the adjacent series of openings 37 in the adjacent housing end, together with an axially outwardly open, common fluid inlet passage 55 which communicates with the openings 53 and has an inlet (not shown) adapted to be connected to a source of fluid to be pumped.
  • Covering the axially outwardly open inlet passage 55 is a housing end member or cover 57.
  • the membrane 17 is formed of 'resilient material and each cavity 19 is inherently biased to a maximum volume such that the associated @porjection 63 of volume is greater than the volume of the'associated pocket 15.
  • the number of cavities 19 corresponds to the number of housing pockets 15 and there is included a separate inlet and outlet -valve for each cavity.
  • one of the series of outlet valves 23 and i 1 the series ofinlet valves 21 is formed integrally with the -pumping membrane 17 and the other series is formed as one piece member 71 which is adapted to interflt with the adjacent end of the pumping membrane 17.
  • the series of outlet valves 23 is constructed integrally with the pumping membrane 17 and each outlet valve 23 comprises an op- I posed pair of lips 75 which are biased into engagement 3 with each other and arranged solely to permit fluid outflow from the associated cavity 19 in response to a greater pressure condition in the associated cavity than in the fluid outlet passage 43.
  • the intake valve member 71 interfits or nests with the adjacent end of the pumping membrane 71 and is retained in position by the valve retainer 51.
  • each inlet valve 21 is made of resilient material and each inlet valve 21 comprises an opposed pair of lips 77 which extend into the adjacent end of the associated cavity 19 and which are biased toward closed position and arranged solely to permit fluid inflow into the associated cavity from the inlet passage 55 in response to a pressure condition in the cavity less than in the inlet passage 55.
  • the means for squeezing the pumping membrane 17 to periodically reduce the volume of the cavities 19 and permitting expansion of the cavities to induce flow therethrough comprises a drive shaft 81 which extends centrally through the housing 13 and is supported by suitable bearings 83 and 85.
  • a generally cylindrical cam element 87 Excentrically mounted on the shaft 81 interiorly of the housing 13 and for common rotation therewith is a generally cylindrical cam element 87 having an outer surface engaging a bearing assembly 89.
  • the bearing assembly 89 is in engagement with the inner surface of a rigid hollow cylindrical member 91 having an outer surface bonded to the cylindrical portion 61 of the pumping membrane 17.
  • rotation of the drive shaft 81 causes rotating oscilation and consequent deformation of the pumping membrane 17 to press or squeeze the cavities 19 in the pockets 15 on one side of the housing 13 to thereby expell fluid from the squeezed cavities, while the diametrically opposite cavities are permitted to resiliently expand within the pockets 15 on the opposite side of the housing and thereby to induce inflow of fluid into the expanding cavities.
  • a fluid pump comprising a hollow housing including means defining a series of radially inwardly open, elongated pockets arranged in a circular array with the axis of said array being generally parallel with the elongation of said pockets, a pumping membrane of resilient material including a series of elongated pumping cavities respectively located in saidhousingvpockets, a series of one-way inlet valves respectively connected with said pumping cavities, a series of one-way outlet valves respectively connected with said pumping cavities, rotary means located within said housing in excentric relation to said array of pockets for periodically squeezing said membrane within said pockets to reduce the volume of said cavities and thereafter-permitting resilient expansion of said cavities within said pockets so as thereby to induce fluid outflow from said cavities through said outlet valves in response to squeezing of said membrane and to induce fluid inflow into said cavities through said inlet valves in response to said resilient expansion of said cavities.
  • said rotary means comprises a drive shaft extending through said housing in concentric relation to said array of pockets, a cylindrical cam element mounted on said drive shaft in excentric relation thereto and for common rotation therewith and including an outer surface, a bearing engaged with said outer surface of said cam element, and a hollow cylindrical member including an outer surface bonded to said membrane and an inner surface in engagement with saidbearing.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
US385853A 1973-08-06 1973-08-06 Fluid pump with resilient pumping membrane Expired - Lifetime US3881846A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US385853A US3881846A (en) 1973-08-06 1973-08-06 Fluid pump with resilient pumping membrane
CA194,950A CA1005276A (en) 1973-08-06 1974-03-14 Fluid pump with resilient pumping membrane
JP49086842A JPS587836B2 (ja) 1973-08-06 1974-07-29 リユウタイポンプ

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US385853A US3881846A (en) 1973-08-06 1973-08-06 Fluid pump with resilient pumping membrane

Publications (1)

Publication Number Publication Date
US3881846A true US3881846A (en) 1975-05-06

Family

ID=23523128

Family Applications (1)

Application Number Title Priority Date Filing Date
US385853A Expired - Lifetime US3881846A (en) 1973-08-06 1973-08-06 Fluid pump with resilient pumping membrane

Country Status (3)

Country Link
US (1) US3881846A (enrdf_load_stackoverflow)
JP (1) JPS587836B2 (enrdf_load_stackoverflow)
CA (1) CA1005276A (enrdf_load_stackoverflow)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4004865A (en) * 1973-05-01 1977-01-25 Nikkiso Eiko Co., Ltd. Pump with yieldable radial partitions and rotatable side plates
US4407436A (en) * 1982-02-25 1983-10-04 Broadfoot John T Metering and/or feeding device for materials
US6637476B2 (en) 2002-04-01 2003-10-28 Protedyne Corporation Robotically manipulable sample handling tool
US20050132822A1 (en) * 2003-03-28 2005-06-23 Peter Massaro Robotically manipulable sample handling tool
US20070068969A1 (en) * 2005-09-23 2007-03-29 Orzech Thomas S Food dispenser with pump for dispensing from a plurality of sources
US20070068966A1 (en) * 2005-09-23 2007-03-29 Orzech Thomas S Food dispenser with pump for easy loading of containers therein
US8308278B2 (en) 2010-04-02 2012-11-13 Xerox Corporation System and method for operating a conduit to transport fluid through the conduit
US20130108477A1 (en) * 2010-04-16 2013-05-02 Veinux Aps Pump element for a tube pump
CN106438381A (zh) * 2016-09-29 2017-02-22 周宁县善长祥农业机械研发有限公司 胶囊自吸泵及其使用方法
US20170350383A1 (en) * 2014-12-17 2017-12-07 Qonqave Gmbh Conveying device
WO2020229568A1 (fr) * 2019-05-14 2020-11-19 Ams R&D Sas Pompe de circulation de fluide

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51117303A (en) * 1975-04-08 1976-10-15 Nitsukisou Eiko Kk Improved displacement type pump
JPS521603A (en) * 1975-06-24 1977-01-07 Nichiousou Eiko Kk Improvement of a tube pump

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2898864A (en) * 1956-12-27 1959-08-11 Nicotron Developments Ltd Rotary pumps
US2970748A (en) * 1958-07-15 1961-02-07 Wilfrid H Bendall Rotary compressors
US3127845A (en) * 1960-10-03 1964-04-07 Carl S Voelcker Pump design
US3148624A (en) * 1961-06-21 1964-09-15 Alan W Baldwin Hydraulic pump

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2898864A (en) * 1956-12-27 1959-08-11 Nicotron Developments Ltd Rotary pumps
US2970748A (en) * 1958-07-15 1961-02-07 Wilfrid H Bendall Rotary compressors
US3127845A (en) * 1960-10-03 1964-04-07 Carl S Voelcker Pump design
US3148624A (en) * 1961-06-21 1964-09-15 Alan W Baldwin Hydraulic pump

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4004865A (en) * 1973-05-01 1977-01-25 Nikkiso Eiko Co., Ltd. Pump with yieldable radial partitions and rotatable side plates
US4334842A (en) * 1973-05-01 1982-06-15 Yoshi Ikeda Rotary pump with radial yieldable partitions and rotatable side plate
US4407436A (en) * 1982-02-25 1983-10-04 Broadfoot John T Metering and/or feeding device for materials
US6637476B2 (en) 2002-04-01 2003-10-28 Protedyne Corporation Robotically manipulable sample handling tool
US20050132822A1 (en) * 2003-03-28 2005-06-23 Peter Massaro Robotically manipulable sample handling tool
US7249529B2 (en) 2003-03-28 2007-07-31 Protedyne Corporation Robotically manipulable sample handling tool
US20070068969A1 (en) * 2005-09-23 2007-03-29 Orzech Thomas S Food dispenser with pump for dispensing from a plurality of sources
US20070068966A1 (en) * 2005-09-23 2007-03-29 Orzech Thomas S Food dispenser with pump for easy loading of containers therein
US7651010B2 (en) * 2005-09-23 2010-01-26 Nestec S.A. Food dispenser with pump for dispensing from a plurality of sources
US20100258590A1 (en) * 2005-09-23 2010-10-14 Nestec S.A. Food dispenser with pump for easy loading of containers therein
US8308278B2 (en) 2010-04-02 2012-11-13 Xerox Corporation System and method for operating a conduit to transport fluid through the conduit
US8585195B2 (en) 2010-04-02 2013-11-19 Xerox Corporation System and method for operating a conduit to transport fluid through the conduit
US20130108477A1 (en) * 2010-04-16 2013-05-02 Veinux Aps Pump element for a tube pump
US20170350383A1 (en) * 2014-12-17 2017-12-07 Qonqave Gmbh Conveying device
US10227967B2 (en) * 2014-12-17 2019-03-12 Qonqave Gmbh Conveying device
CN106438381A (zh) * 2016-09-29 2017-02-22 周宁县善长祥农业机械研发有限公司 胶囊自吸泵及其使用方法
WO2020229568A1 (fr) * 2019-05-14 2020-11-19 Ams R&D Sas Pompe de circulation de fluide
FR3096094A1 (fr) * 2019-05-14 2020-11-20 Ams R&D Sas Pompe de circulation de fluide.
CN113853481A (zh) * 2019-05-14 2021-12-28 Ams R&D联合股份有限公司 流体循环泵
CN113853481B (zh) * 2019-05-14 2023-08-22 Ams R&D联合股份有限公司 流体循环泵

Also Published As

Publication number Publication date
CA1005276A (en) 1977-02-15
JPS5044505A (enrdf_load_stackoverflow) 1975-04-22
JPS587836B2 (ja) 1983-02-12

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