GB1075941A - Method and means for preventing cavitation in hydraulic pumps - Google Patents

Method and means for preventing cavitation in hydraulic pumps

Info

Publication number
GB1075941A
GB1075941A GB26344/64A GB2634464A GB1075941A GB 1075941 A GB1075941 A GB 1075941A GB 26344/64 A GB26344/64 A GB 26344/64A GB 2634464 A GB2634464 A GB 2634464A GB 1075941 A GB1075941 A GB 1075941A
Authority
GB
United Kingdom
Prior art keywords
pump
inlet
rotor
ports
port
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
Application number
GB26344/64A
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.)
American Brake Shoe Co
Original Assignee
American Brake Shoe Co
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 American Brake Shoe Co filed Critical American Brake Shoe Co
Publication of GB1075941A publication Critical patent/GB1075941A/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
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C14/00—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
    • F04C14/02—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations specially adapted for several machines or pumps connected in series or in parallel
    • 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
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
    • F04B1/20—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis having rotary cylinder block
    • F04B1/2014—Details or component parts
    • F04B1/2064—Housings
    • 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
    • F04B23/00—Pumping installations or systems
    • F04B23/04—Combinations of two or more pumps
    • F04B23/08—Combinations of two or more pumps the pumps being of different types
    • F04B23/10—Combinations of two or more pumps the pumps being of different types at least one pump being of the reciprocating positive-displacement type
    • F04B23/106—Combinations of two or more pumps the pumps being of different types at least one pump being of the reciprocating positive-displacement type being an axial piston pump
    • 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
    • F04B23/00—Pumping installations or systems
    • F04B23/04—Combinations of two or more pumps
    • F04B23/08—Combinations of two or more pumps the pumps being of different types
    • F04B23/12—Combinations of two or more pumps the pumps being of different types at least one pump being of the rotary-piston positive-displacement type
    • 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
    • F04B23/00—Pumping installations or systems
    • F04B23/04—Combinations of two or more pumps
    • F04B23/08—Combinations of two or more pumps the pumps being of different types
    • F04B23/14—Combinations of two or more pumps the pumps being of different types at least one pump being of the non-positive-displacement type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C11/00—Combinations of two or more machines or pumps, each being of rotary-piston or oscillating-piston type; Pumping installations
    • F04C11/005—Combinations of two or more machines or pumps, each being of rotary-piston or oscillating-piston type; Pumping installations of dissimilar working principle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D9/00—Priming; Preventing vapour lock
    • F04D9/04—Priming; Preventing vapour lock using priming pumps; using booster pumps to prevent vapour-lock
    • F04D9/043—Priming; Preventing vapour lock using priming pumps; using booster pumps to prevent vapour-lock the priming pump being hand operated or of the reciprocating type

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
  • Hydraulic Motors (AREA)

Abstract

1, 075, 941. Reciprocating pumps; rotary pumps. AMERICAN BRAKE SHOE CO. June 25, 1964 [July 5, 1963], No. 26344/64. Headings F1A and F1F. In a rotating cylinder block axial piston pump or a rotary vane pump having axially directed inlet ports to the cylinders or inter-vane spaces, respectively, a rotator member is located between the pump inlet and the inlet ports to impart an angular velocity to the liquid entering the inlet ports which is substantially equal to that of the inlet ports. In the embodiment illustrated, liquid flowing through the inlet 20 to the cylinders 33 passes through a radial vane rotor 50, keyed to the pump drive shaft 25. The liquid flowing through the rotor 50 is directed to the outlet (74), Fig. 4 (not shown), of the rotor housing 11, which communicates with the cylinders 33 via the inlet port 35 in the port 27, by means of ramps (68, 68a) in the rotor housing. In a further embodiment, Figs. 8 to 14 (not shown), liquid flowing through the inlet (94) to the chambers of a vane pump (12) passes through a radial vane rotor (84), keyed to an extension (130) of the pump driving shaft (99). The pump comprises a rotor (98), splined to the driving shaft, having radial vanes (102) which are urged outwardly into sealing contact with a cam ring (97) which includes two diametrically opposed sealing portions disposed at equal radii from the axis of the driving shaft and two diametrically opposed transfer portions of equal but larger radii. The sealing and transfer portions are interconnected by ramps. The inlet to the chambers of the pump is through ports (120, 121 and 110, 111, 114, 115) in port plates (95 and 96) on opposite sides of the rotor (98). The pump delivers, via ports (123, 124, 125, 126) in one port plate (96) and similarly disposed ports in the second port plate (95), to an annular peripheral groove (122) in the second port plate.
GB26344/64A 1963-07-05 1964-06-25 Method and means for preventing cavitation in hydraulic pumps Expired GB1075941A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US293081A US3202101A (en) 1963-07-05 1963-07-05 Method and means for preventing cavitation in hydraulic piston and vane pumps

Publications (1)

Publication Number Publication Date
GB1075941A true GB1075941A (en) 1967-07-19

Family

ID=23127585

Family Applications (1)

Application Number Title Priority Date Filing Date
GB26344/64A Expired GB1075941A (en) 1963-07-05 1964-06-25 Method and means for preventing cavitation in hydraulic pumps

Country Status (3)

Country Link
US (1) US3202101A (en)
DE (1) DE1453427B1 (en)
GB (1) GB1075941A (en)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3499391A (en) * 1968-04-15 1970-03-10 Sperry Rand Corp Power transmission
FR2268956B1 (en) * 1974-04-24 1977-06-24 Messier Hispano Sa
US4014628A (en) * 1975-05-15 1977-03-29 Caterpillar Tractor Co. Supercharged three-section pump
US4240567A (en) * 1979-05-09 1980-12-23 Nordson Corporation Pump
US4281971A (en) * 1979-07-31 1981-08-04 Abex Corporation Inlet inducer-impeller for piston pump
GB2093916B (en) * 1981-03-02 1984-10-03 Atsugi Motor Parts Co Ltd Rotary pumps
FR2592920B1 (en) * 1986-01-16 1989-06-02 Penitot Pierre OSCILLATING PISTON TYPE MULTI - FUNCTION VOLUMETRIC PUMP.
US5413466A (en) * 1993-10-25 1995-05-09 Coltec Industries Inc. Unified fuel pump assembly
DE19536997C1 (en) * 1995-10-04 1997-02-20 Brueninghaus Hydromatik Gmbh Double pump with charge pump
DE19756277A1 (en) * 1997-12-18 1999-07-01 Peter Kleinedler Grinding wheel for axial piston machines
US6675697B1 (en) 1998-12-07 2004-01-13 Apis Energy Gmbh Inclined plate for axial piston motors
DE10154723A1 (en) * 2000-11-10 2002-10-31 Parker Hannifin Corp Axial piston pump has vanes in cylinder protruding radially outwards and finishing with radially outer edge adjacent to inner wall surface of cylinder chamber, and when cylinder rotates vanes effect pre-compression of fluid
US7278263B1 (en) 2003-06-27 2007-10-09 Hydro-Gear Limited Partnership Charge pump for a hydraulic pump
US7007468B1 (en) 2003-06-27 2006-03-07 Hydro-Gear Limited Partnership Charge pump for a hydrostatic transmission
CN102865206A (en) * 2012-10-07 2013-01-09 四川省宜宾普什驱动有限责任公司 High-speed pump
CN103573610B (en) * 2013-11-06 2016-04-20 四川省宜宾普什驱动有限责任公司 A kind of hydraulic variable flow plunger pump repairing and Rinsing unit and method
KR102653277B1 (en) * 2017-11-22 2024-04-03 파커-한니핀 코포레이션 Bent axis hydraulic pump with centrifugal assistance
DE102022206873A1 (en) 2022-07-06 2024-01-11 Robert Bosch Gesellschaft mit beschränkter Haftung Axial piston machine

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1927799A (en) * 1932-03-07 1933-09-19 Goulds Pumps Rotary pump
US2055587A (en) * 1935-10-11 1936-09-29 Gulf Research Development Co Pump
US2402398A (en) * 1943-05-29 1946-06-18 Pesco Products Co Booster pump for aircraft fuel systems
US2365309A (en) * 1943-07-12 1944-12-19 Robert E Barry High-pressure pump
US2769393A (en) * 1951-03-23 1956-11-06 Sundstrand Machine Tool Co Hydraulic pump and control
US3004494A (en) * 1957-11-14 1961-10-17 Thompson Ramo Wooldridge Inc Turbine driven pump inducer

Also Published As

Publication number Publication date
DE1453427B1 (en) 1970-10-01
US3202101A (en) 1965-08-24

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