GB1255230A - Improvement in relation to helical screw pumps - Google Patents

Improvement in relation to helical screw pumps

Info

Publication number
GB1255230A
GB1255230A GB6194169A GB6194169A GB1255230A GB 1255230 A GB1255230 A GB 1255230A GB 6194169 A GB6194169 A GB 6194169A GB 6194169 A GB6194169 A GB 6194169A GB 1255230 A GB1255230 A GB 1255230A
Authority
GB
United Kingdom
Prior art keywords
stator
tongues
flange
groove
helical screw
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
GB6194169A
Inventor
Peter Arnold Dawson
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 GB6194169A priority Critical patent/GB1255230A/en
Publication of GB1255230A publication Critical patent/GB1255230A/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
    • F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
    • F04C2/107—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member with helical teeth
    • F04C2/1071—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member with helical teeth the inner and outer member having a different number of threads and one of the two being made of elastic materials, e.g. Moineau type
    • F04C2/1073—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member with helical teeth the inner and outer member having a different number of threads and one of the two being made of elastic materials, e.g. Moineau type where one member is stationary while the other member rotates and orbits
    • F04C2/1075—Construction of the stationary member

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

1,255,230. Rotary pumps. STOTHERT & PITT Ltd. Dec. 19, 1969, No. 61941/69. Heading F1F. In a rotary helical screw pump comprising a resilient stator member S having internal threads 1 for co-operation with a rotor member (not shown), the end-face of the stator is formed with an annular bead 2 having axially projecting tongues for sealing engagement in an annular groove 5 of a mating component M of the pump casing which casing also includes a rigid tube C supporting the stator. On sealing engagement the tongues 3 engage both the bottom and sides of the groove 5. In another embodiment, the tube C is omitted, and the stator is formed with a flange intermediate its ends with the flange formed with an axially directed bead having tongues which again sealingly engage in a groove in a mating part of the pump casing. The flange may be supported by a rigid surrounding bush.
GB6194169A 1969-12-19 1969-12-19 Improvement in relation to helical screw pumps Expired GB1255230A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB6194169A GB1255230A (en) 1969-12-19 1969-12-19 Improvement in relation to helical screw pumps

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB6194169A GB1255230A (en) 1969-12-19 1969-12-19 Improvement in relation to helical screw pumps

Publications (1)

Publication Number Publication Date
GB1255230A true GB1255230A (en) 1971-12-01

Family

ID=10487663

Family Applications (1)

Application Number Title Priority Date Filing Date
GB6194169A Expired GB1255230A (en) 1969-12-19 1969-12-19 Improvement in relation to helical screw pumps

Country Status (1)

Country Link
GB (1) GB1255230A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2937403A1 (en) * 1979-09-15 1981-04-02 Gummi-Jäger KG GmbH & Cie, 3000 Hannover Stator for eccentric-screw pump - comprises rubber or elastomer moulding with integral seals which overlap housing ends
WO2013167120A3 (en) * 2012-05-05 2014-05-22 Netzsch Pumpen Und Systeme Gmbh Divided stator casing

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2937403A1 (en) * 1979-09-15 1981-04-02 Gummi-Jäger KG GmbH & Cie, 3000 Hannover Stator for eccentric-screw pump - comprises rubber or elastomer moulding with integral seals which overlap housing ends
WO2013167120A3 (en) * 2012-05-05 2014-05-22 Netzsch Pumpen Und Systeme Gmbh Divided stator casing
CN104285062A (en) * 2012-05-05 2015-01-14 奈赤－泵和系统有限责任公司 Divided stator casing
RU2597272C2 (en) * 2012-05-05 2016-09-10 Неч Пумпен Унд Зюстеме Гмбх Separate stator casing
US9719506B2 (en) 2012-05-05 2017-08-01 NETZSCH Pumpen & Systems GmbH Divided stator casing

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