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GB2012875A - Gear Pumps - Google Patents

Gear Pumps

Info

Publication number
GB2012875A
GB2012875A GB7842403A GB7842403A GB2012875A GB 2012875 A GB2012875 A GB 2012875A GB 7842403 A GB7842403 A GB 7842403A GB 7842403 A GB7842403 A GB 7842403A GB 2012875 A GB2012875 A GB 2012875A
Authority
GB
United Kingdom
Prior art keywords
shaft
housing
pumping chamber
drive shaft
externally
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
GB7842403A
Other versions
GB2012875B (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.)
ZF International UK Ltd
Original Assignee
Lucas Industries 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 Lucas Industries Ltd filed Critical Lucas Industries Ltd
Priority to GB7842403A priority Critical patent/GB2012875B/en
Publication of GB2012875A publication Critical patent/GB2012875A/en
Application granted granted Critical
Publication of GB2012875B publication Critical patent/GB2012875B/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
    • F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • F04C15/0042—Systems for the equilibration of forces acting on the machines or pump
    • F04C15/0046—Internal leakage control
    • 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
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/12—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
    • F04C2/14—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons

Landscapes

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

Abstract

A gear pump has a housing (35) defining a pumping chamber in which a pair of externally-toothed gear elements (32, 46) are in mesh, one gear element (32) being in splined engagement with a drive shaft (30) which extends externally of the housing (35). An axially-directed face(s) of the shaft (30) is isolated from high pressure in the pumping chamber by a seal (36), thereby obviating a need for a thrust bearing for the shaft (30). The said face(s) is exposed to a relatively low pressure owing to e.g. connection of a drain passage (34) with a zone (41) encircling the drive shaft. <IMAGE>
GB7842403A 1978-01-18 1978-10-30 Gear pumps Expired GB2012875B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB7842403A GB2012875B (en) 1978-01-18 1978-10-30 Gear pumps

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB199678 1978-01-18
GB7842403A GB2012875B (en) 1978-01-18 1978-10-30 Gear pumps

Publications (2)

Publication Number Publication Date
GB2012875A true GB2012875A (en) 1979-08-01
GB2012875B GB2012875B (en) 1982-04-21

Family

ID=26237133

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7842403A Expired GB2012875B (en) 1978-01-18 1978-10-30 Gear pumps

Country Status (1)

Country Link
GB (1) GB2012875B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117167187A (en) * 2023-08-08 2023-12-05 苏州热工研究院有限公司 Nuclear power plant top-charging pump oil circuit hydraulic motor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117167187A (en) * 2023-08-08 2023-12-05 苏州热工研究院有限公司 Nuclear power plant top-charging pump oil circuit hydraulic motor

Also Published As

Publication number Publication date
GB2012875B (en) 1982-04-21

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Legal Events

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

Effective date: 19931030