GB1085393A - Variable delivery reciprocating pumps - Google Patents

Variable delivery reciprocating pumps

Info

Publication number
GB1085393A
GB1085393A GB4612/64A GB461264A GB1085393A GB 1085393 A GB1085393 A GB 1085393A GB 4612/64 A GB4612/64 A GB 4612/64A GB 461264 A GB461264 A GB 461264A GB 1085393 A GB1085393 A GB 1085393A
Authority
GB
United Kingdom
Prior art keywords
hand end
system pressure
cam
ring
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.)
Expired
Application number
GB4612/64A
Inventor
Peter Spence
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.)
Dowty Technical Developments Ltd
Original Assignee
Dowty Technical Developments Ltd
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 Dowty Technical Developments Ltd filed Critical Dowty Technical Developments Ltd
Priority to GB4612/64A priority Critical patent/GB1085393A/en
Publication of GB1085393A publication Critical patent/GB1085393A/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
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/12—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by varying the length of stroke of the working members
    • F04B49/123—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by varying the length of stroke of the working members by changing the eccentricity of one element relative to another element
    • F04B49/128—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by varying the length of stroke of the working members by changing the eccentricity of one element relative to another element by changing the eccentricity of the cylinders, e.g. by moving a cylinder block
    • 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
    • F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
    • F04B1/06—Control
    • F04B1/07—Control by varying the relative eccentricity between two members, e.g. a cam and a drive shaft

Landscapes

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

Abstract

1,085,393. Fluid-pressure servomotor systems. DOWTY TECHNICAL DEVELOPMENTS Ltd. Jan. 29, 1965 [Feb. 4, 1964], No. 4612/64. Heading G3P. [Also in Division F1] In a radial piston pump having a cam-ring pivotably adjustable to vary the piston stroke (see Division F1), the cam-ring is adjusted by a control member 120 subjected to the pressure in the system supplied by the pump. The system pressure at connection 127 acts directly on the right-hand end of member 120 and via passages 131, 132, 142 on the left-hand end of the member, a spring 129 biasing the member to its full-stroke position shown. Above a predetermined level, the system pressure opens a pilot valve 136 to connect the left-hand end of member 120 to the pump casing via ports 139, 140, so that the system pressure acting on the right-hand end of member 120 moves the member leftwards to reduce the stroke. When the system pressure has dropped sufficiently, valve 136 closes and the pressures on either side of member 120 equalize, permitting spring 129 to return member 120 to its full-stroke position. Member 120 has frusto-conical faces 124, 125 engaging a gearlike tooth 119 of involute form on the cam-ring.
GB4612/64A 1964-02-04 1964-02-04 Variable delivery reciprocating pumps Expired GB1085393A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4612/64A GB1085393A (en) 1964-02-04 1964-02-04 Variable delivery reciprocating pumps

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4612/64A GB1085393A (en) 1964-02-04 1964-02-04 Variable delivery reciprocating pumps

Publications (1)

Publication Number Publication Date
GB1085393A true GB1085393A (en) 1967-09-27

Family

ID=9780457

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4612/64A Expired GB1085393A (en) 1964-02-04 1964-02-04 Variable delivery reciprocating pumps

Country Status (1)

Country Link
GB (1) GB1085393A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2361553A1 (en) * 1976-08-13 1978-03-10 Shimadzu Corp PISTON PUMP
EP1989444A2 (en) * 2006-02-27 2008-11-12 Chukar Equipment LLC High pressure pump of variable displacement

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2361553A1 (en) * 1976-08-13 1978-03-10 Shimadzu Corp PISTON PUMP
EP1989444A2 (en) * 2006-02-27 2008-11-12 Chukar Equipment LLC High pressure pump of variable displacement
EP1989444A4 (en) * 2006-02-27 2012-10-03 Chukar Equipment Llc High pressure pump of variable displacement
US8459970B2 (en) 2006-02-27 2013-06-11 Charles E. Johnston High pressure pump of variable displacement

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