GB2009851A - Rotary positive-displacement fluid-machines - Google Patents

Rotary positive-displacement fluid-machines

Info

Publication number
GB2009851A
GB2009851A GB7847439A GB7847439A GB2009851A GB 2009851 A GB2009851 A GB 2009851A GB 7847439 A GB7847439 A GB 7847439A GB 7847439 A GB7847439 A GB 7847439A GB 2009851 A GB2009851 A GB 2009851A
Authority
GB
United Kingdom
Prior art keywords
chamber
fluid
line
machines
displacement fluid
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
GB7847439A
Other versions
GB2009851B (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.)
Allweiler GmbH
Original Assignee
Allweiler AG
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 Allweiler AG filed Critical Allweiler AG
Publication of GB2009851A publication Critical patent/GB2009851A/en
Application granted granted Critical
Publication of GB2009851B publication Critical patent/GB2009851B/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
    • F04C15/0003—Sealing arrangements in rotary-piston machines or pumps
    • F04C15/0034—Sealing arrangements in rotary-piston machines or pumps for other than the working fluid, i.e. the sealing arrangements are not between working chambers of the machine
    • F04C15/0038—Shaft sealings specially adapted for rotary-piston machines or pumps
    • 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
    • F04C2/16—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 with helical teeth, e.g. chevron-shaped, screw type

Landscapes

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

Abstract

A meshing screw pump is provided with idler screws (2, 3) and a drive screw (4) for pumping fluid from a suction chamber (6) to a pressure chamber (7). A scavenging fluid circulates through a passage (22), a compensating tank (23), a line (24) and a chamber (16). A thrust-balancing piston (11) is provided between the pressure chamber (7) and the chamber (16). The balance piston (11) is encircled by a throttle gap (13) and an annular chamber (14). The latter is connected by a line (15) to the suction chamber (6); and thus fluid from the pressure chamber (7) rising in the throttle gap (13), rather than entering the chamber (16), returns to the suction chamber (6) via the annular chamber (14) and line (15) and moreover, the fluid being pumped, which may be hot oil, does not contact a seal (17). <IMAGE>
GB7847439A 1977-12-08 1978-12-06 Screw spindle pump Expired GB2009851B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19772754612 DE2754612A1 (en) 1977-12-08 1977-12-08 SCREW PUMP

Publications (2)

Publication Number Publication Date
GB2009851A true GB2009851A (en) 1979-06-20
GB2009851B GB2009851B (en) 1982-07-21

Family

ID=6025561

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7847439A Expired GB2009851B (en) 1977-12-08 1978-12-06 Screw spindle pump

Country Status (6)

Country Link
CH (1) CH636930A5 (en)
DE (1) DE2754612A1 (en)
FR (1) FR2411319A1 (en)
GB (1) GB2009851B (en)
IT (1) IT1101489B (en)
SE (1) SE7812600L (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2175956A (en) * 1985-05-30 1986-12-10 Boc Group Plc Dealing with leakage between pump stages

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3916339A1 (en) * 1989-05-19 1990-11-22 Rehau Ag & Co Pump for delivery of cold-flow medium - with integration of second pump to deliver cleaning fluid
CN108050265B (en) * 2017-12-07 2019-07-02 东北石油大学 A kind of wide range pressure-regulating valve

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2175956A (en) * 1985-05-30 1986-12-10 Boc Group Plc Dealing with leakage between pump stages

Also Published As

Publication number Publication date
SE7812600L (en) 1979-06-09
DE2754612A1 (en) 1979-06-13
CH636930A5 (en) 1983-06-30
IT7830634A0 (en) 1978-12-06
FR2411319A1 (en) 1979-07-06
IT1101489B (en) 1985-09-28
FR2411319B3 (en) 1981-09-11
GB2009851B (en) 1982-07-21

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Legal Events

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