GB1379575A - Meshing screw pump - Google Patents

Meshing screw pump

Info

Publication number
GB1379575A
GB1379575A GB1945971A GB1945971A GB1379575A GB 1379575 A GB1379575 A GB 1379575A GB 1945971 A GB1945971 A GB 1945971A GB 1945971 A GB1945971 A GB 1945971A GB 1379575 A GB1379575 A GB 1379575A
Authority
GB
United Kingdom
Prior art keywords
sleeve
screws
sleeves
june
serve
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
GB1945971A
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.)
Stothert and Pitt Ltd
Original Assignee
Stothert and Pitt 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 Stothert and Pitt Ltd filed Critical Stothert and Pitt Ltd
Priority to GB1945971A priority Critical patent/GB1379575A/en
Publication of GB1379575A publication Critical patent/GB1379575A/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
    • 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)
  • Rotary Pumps (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

1379575 Rotary positive-displacement pumps STOTHERT & PITT Ltd 7 June 1972 [8 June 1971] 19459/71 Heading F1F An intermeshing-screw pump comprises a pair of intermeshing screws 2, 3 mounted in a casing 1 having an inlet 14 and outlet 15, screws 2, 3 being surrounded by a fixed sleeve 16 and a movable sleeve 18, the movable sleeve being attached by tie rods to a balancing sleeve 20 which surrounds labyrinth sealing means 44, 45. The sleeve 20 and means 44, 45 serve to balance fluid-pressure forces on the sleeve 18 and screws 2, 3 respectively. Sleeve 20 is engaged by a threaded spindle 21 which can be rotated to move sleeves 18, 20 axially by a control means 23 Fig. 4 (not shown). Since the high-pressure outlet 15 leads to between sleeves 18, 20 it can be seen that the differential fluid-pressures acting on sleeve 18 are cancelled by those acting on sleeve 20. Similarly the interslotting discs 44 and spacers 45 on the shafts 4, 5 supporting screws 2, 3 serve to balance the forces on the screws 2,3. Thus adjustment of the sleeves 18, 20 is made easier, such adjustment effecting a change in capacity of the pump.
GB1945971A 1971-06-08 1971-06-08 Meshing screw pump Expired GB1379575A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1945971A GB1379575A (en) 1971-06-08 1971-06-08 Meshing screw pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1945971A GB1379575A (en) 1971-06-08 1971-06-08 Meshing screw pump

Publications (1)

Publication Number Publication Date
GB1379575A true GB1379575A (en) 1975-01-02

Family

ID=10129717

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1945971A Expired GB1379575A (en) 1971-06-08 1971-06-08 Meshing screw pump

Country Status (1)

Country Link
GB (1) GB1379575A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007068973A1 (en) * 2005-12-13 2007-06-21 Edwards Limited Screw pump
CN100417817C (en) * 2004-03-18 2008-09-10 北京化工大学 Double end compound tooth type labyrinth screw pump
WO2010125142A3 (en) * 2009-04-30 2011-07-14 Leistritz Pumpen Gmbh Screw pump comprising spindles provided with sets of profiled sections having different pitches
USD749138S1 (en) 2014-12-19 2016-02-09 Q-Pumps S.A. de C.V. Twin screw pump
CN109011121A (en) * 2018-08-31 2018-12-18 李安生 Electric fluid injection aid
WO2021118533A1 (en) * 2019-12-10 2021-06-17 Circor Pumps North America, Llc Screw pump or machine

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100417817C (en) * 2004-03-18 2008-09-10 北京化工大学 Double end compound tooth type labyrinth screw pump
WO2007068973A1 (en) * 2005-12-13 2007-06-21 Edwards Limited Screw pump
CN101351646B (en) * 2005-12-13 2013-11-06 爱德华兹有限公司 Screw pump
US8827669B2 (en) 2005-12-13 2014-09-09 Edwards Limited Screw pump having varying pitches
WO2010125142A3 (en) * 2009-04-30 2011-07-14 Leistritz Pumpen Gmbh Screw pump comprising spindles provided with sets of profiled sections having different pitches
DE102009019220B4 (en) * 2009-04-30 2013-04-11 Leistritz Pumpen Gmbh Screw Pump
USD749138S1 (en) 2014-12-19 2016-02-09 Q-Pumps S.A. de C.V. Twin screw pump
CN109011121A (en) * 2018-08-31 2018-12-18 李安生 Electric fluid injection aid
WO2021118533A1 (en) * 2019-12-10 2021-06-17 Circor Pumps North America, Llc Screw pump or machine
US12012957B2 (en) 2019-12-10 2024-06-18 Circor Pumps North America, Llc. Screw pump or machine with a liner that bends and/or pivots with the rotors

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Legal Events

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