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GB1413998A - Piston pump - Google Patents

Piston pump

Info

Publication number
GB1413998A
GB1413998A GB5706872A GB5706872A GB1413998A GB 1413998 A GB1413998 A GB 1413998A GB 5706872 A GB5706872 A GB 5706872A GB 5706872 A GB5706872 A GB 5706872A GB 1413998 A GB1413998 A GB 1413998A
Authority
GB
United Kingdom
Prior art keywords
valve
line
pump
opening
spring
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
GB5706872A
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.)
Langen Co Thomas K H
Original Assignee
Langen Co Thomas K H
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 Langen Co Thomas K H filed Critical Langen Co Thomas K H
Publication of GB1413998A publication Critical patent/GB1413998A/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
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/02—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having two cylinders
    • 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
    • F04B1/053—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement with actuating or actuated elements at the inner ends of the cylinders
    • 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
    • F04B49/16—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 adjusting the capacity of dead spaces of working chambers

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Control Of Positive-Displacement Pumps (AREA)

Abstract

1413998 Reciprocating pumps K-H THOMAS [trading as LANGEN & CO] 11 Dec 1972 [11 Dec 1971] 57068/72 Heading F1A A pump comprises two or more pistons 111, 112 reciprocated in antiphase in cylinders 115, 116 connected by a by-pass line 124 having a valve 125 operable to open or close line 124, opening of line 124 causing liquid to flow to and fro between cylinders 115, 116 with no delivery through discharge line 123. Valve 125 is operated automatically in accordance with the pump delivery pressure in line 123. In Fig.4 (not shown), the valve is a spool valve subjected at one end to the delivery pressure and at the other to a spring-bias, which may be adjustable. A spring-loaded ball engages grooves in the valve spool to hold it in its end positions; the ball spring may be adjustable to vary the differential between the opening and closing pressures. In Fig.2 (not shown), a second valve (225') opening at a higher pressure than valve 125 is arranged in parallel with valve 125, a checkvalve being provided in series with valve 125, so that the pump can operate at full, half or zero output according to the delivery pressure. In Fig.3 (not shown), the pump pistons have through passages (17), (18) which connect the pumping chambers to an inlet chamber (8) at bottom dead centre.
GB5706872A 1971-12-11 1972-12-11 Piston pump Expired GB1413998A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19712161560 DE2161560A1 (en) 1971-12-11 1971-12-11 PISTON PUMP

Publications (1)

Publication Number Publication Date
GB1413998A true GB1413998A (en) 1975-11-12

Family

ID=5827697

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5706872A Expired GB1413998A (en) 1971-12-11 1972-12-11 Piston pump

Country Status (5)

Country Link
JP (1) JPS4866203A (en)
DE (1) DE2161560A1 (en)
FR (1) FR2164424A5 (en)
GB (1) GB1413998A (en)
IT (1) IT971341B (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4041800A1 (en) * 1990-12-24 1992-06-25 Teves Gmbh Alfred Two-cylinder pump with chambers interconnectable by valve - allows pistons to perform induction and pressure strokes alternately with fluid circulating without consumption of power
DE4136624A1 (en) * 1991-11-07 1993-05-27 Daimler Benz Ag VALVE CONTROLLED DISPLAY UNIT WITH VALVE RELEASE
CN1057146C (en) * 1994-05-06 2000-10-04 卡明斯发动机公司 High pressure pump for fuel injection systems
US7318706B2 (en) 2003-09-15 2008-01-15 Edwards Limited Valving for multi-stage vacuum pumps

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007029670A1 (en) * 2006-10-20 2008-04-24 Robert Bosch Gmbh Hydraulic working machine

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4041800A1 (en) * 1990-12-24 1992-06-25 Teves Gmbh Alfred Two-cylinder pump with chambers interconnectable by valve - allows pistons to perform induction and pressure strokes alternately with fluid circulating without consumption of power
DE4041800C2 (en) * 1990-12-24 1998-09-17 Teves Gmbh Alfred Pump device
DE4136624A1 (en) * 1991-11-07 1993-05-27 Daimler Benz Ag VALVE CONTROLLED DISPLAY UNIT WITH VALVE RELEASE
CN1057146C (en) * 1994-05-06 2000-10-04 卡明斯发动机公司 High pressure pump for fuel injection systems
US7318706B2 (en) 2003-09-15 2008-01-15 Edwards Limited Valving for multi-stage vacuum pumps

Also Published As

Publication number Publication date
IT971341B (en) 1974-04-30
JPS4866203A (en) 1973-09-11
DE2161560A1 (en) 1973-06-14
FR2164424A5 (en) 1973-07-27

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Legal Events

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