ZA935312B - Pair of conveyor screws for rotating positive-displacement pumps - Google Patents

Pair of conveyor screws for rotating positive-displacement pumps

Info

Publication number
ZA935312B
ZA935312B ZA935312A ZA935312A ZA935312B ZA 935312 B ZA935312 B ZA 935312B ZA 935312 A ZA935312 A ZA 935312A ZA 935312 A ZA935312 A ZA 935312A ZA 935312 B ZA935312 B ZA 935312B
Authority
ZA
South Africa
Prior art keywords
rotor
pair
displacement pumps
flank
reversal point
Prior art date
Application number
ZA935312A
Inventor
Heinrich Moeller
Henning Moeller
Original Assignee
Heinrich Moeller
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 Heinrich Moeller filed Critical Heinrich Moeller
Publication of ZA935312B publication Critical patent/ZA935312B/en

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
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C18/082—Details specially related to intermeshing engagement type pumps
    • F04C18/084—Toothed wheels

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)

Abstract

The invention relates to a pair of conveyor worms for rotary positive-displacement pumps, the conveyor worms of which, which are formed as a rotor and counter-rotor, rotate contactlessly in the drilling and the sides at the same speed (worm-drive pump), form loss gaps between them and have the same throat depth and pitch and symmetrical flank profiles on each side, made up with respect to their land height of a tooth base beneath the flank profile reversal point (q) and a tooth head thereabove. To provide an improvement it is proposed that the height of the loss gap (c) determined by the profile in the axial section on the pitch circle can be kept constant for a given rotor diameter (DK) by shifting the flank profile reversal point (q) as a function of a technically attainable rotor rise (H).
ZA935312A 1992-07-29 1993-07-22 Pair of conveyor screws for rotating positive-displacement pumps ZA935312B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4224969A DE4224969C1 (en) 1992-07-29 1992-07-29 Feed screw pair for rotating positive displacement pumps

Publications (1)

Publication Number Publication Date
ZA935312B true ZA935312B (en) 1994-02-10

Family

ID=6464331

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA935312A ZA935312B (en) 1992-07-29 1993-07-22 Pair of conveyor screws for rotating positive-displacement pumps

Country Status (10)

Country Link
EP (1) EP0653021B1 (en)
JP (1) JPH07509295A (en)
CN (1) CN1042259C (en)
AT (1) ATE139304T1 (en)
CA (1) CA2141455A1 (en)
DE (1) DE4224969C1 (en)
ES (1) ES2089828T3 (en)
NO (1) NO306076B1 (en)
WO (1) WO1994003730A1 (en)
ZA (1) ZA935312B (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1026399A1 (en) 1999-02-08 2000-08-09 Ateliers Busch S.A. Twin feed screw
DE19924616C2 (en) * 1999-05-28 2001-04-19 Bornemann J H Gmbh Process for the production of rotors
DE19941787B4 (en) * 1999-09-02 2011-06-16 Leybold Vakuum Gmbh Screw vacuum pump with screw flights with changing pitch
DE10129341A1 (en) * 2001-06-19 2003-01-02 Ralf Steffens Profile contour of a spindle pump
ES2295340T3 (en) * 2001-08-27 2008-04-16 Arthur Vanmoor FLUID DISPLACEMENT PUMP WITH COUNTERPRESSURE BUMPER.
DE10259444B3 (en) * 2002-12-19 2004-04-15 Joh. Heinr. Bornemann Gmbh Conveyor screw for screw type pump has asymmetrical rotor profile for reduced profile-dependent flank gaps, with convex flank section for increased sealing surface
CN100379993C (en) * 2005-12-08 2008-04-09 无锡压缩机股份有限公司 Oil-free screw compressor rotor clearance structure
JP6679158B2 (en) * 2015-10-30 2020-04-15 蛇の目ミシン工業株式会社 Feed dog adjusting mechanism and sewing machine equipped with the adjusting mechanism
CN114483575B (en) * 2022-02-08 2024-05-03 黄山黄泵双螺杆科技有限公司 Twin screw pump for transporting fluids of high specific gravity

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB254986A (en) * 1925-10-06 1926-07-15 Alexander Johan Mollinger Improvements in or relating to screw pumps
DE594691C (en) * 1933-01-04 1934-03-21 Aeg Screw compressor, consisting of right- and left-handed, mutually engaging screws coupled by cogwheels
US3289600A (en) * 1964-03-13 1966-12-06 Joseph E Whitfield Helically threaded rotors for screw type pumps, compressors and similar devices
GB2182393A (en) * 1985-11-04 1987-05-13 Ngk Insulators Ltd Intermeshing screw pump

Also Published As

Publication number Publication date
DE4224969C1 (en) 1993-09-30
EP0653021B1 (en) 1996-06-12
JPH07509295A (en) 1995-10-12
CN1042259C (en) 1999-02-24
NO950310L (en) 1995-03-24
NO950310D0 (en) 1995-01-27
CN1088666A (en) 1994-06-29
ATE139304T1 (en) 1996-06-15
ES2089828T3 (en) 1996-10-01
EP0653021A1 (en) 1995-05-17
NO306076B1 (en) 1999-09-13
WO1994003730A1 (en) 1994-02-17
CA2141455A1 (en) 1994-02-17

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