NO950310L - Transport screws for rotary displacement pump - Google Patents

Transport screws for rotary displacement pump

Info

Publication number
NO950310L
NO950310L NO950310A NO950310A NO950310L NO 950310 L NO950310 L NO 950310L NO 950310 A NO950310 A NO 950310A NO 950310 A NO950310 A NO 950310A NO 950310 L NO950310 L NO 950310L
Authority
NO
Norway
Prior art keywords
rotor
flank
reversal point
profile
height
Prior art date
Application number
NO950310A
Other languages
Norwegian (no)
Other versions
NO306076B1 (en
NO950310D0 (en
Inventor
Heinrich Moller
Henning Moller
Original Assignee
Heinrich Moller
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 Moller filed Critical Heinrich Moller
Publication of NO950310D0 publication Critical patent/NO950310D0/en
Publication of NO950310L publication Critical patent/NO950310L/en
Publication of NO306076B1 publication Critical patent/NO306076B1/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).
NO950310A 1992-07-29 1995-01-27 Transport screws for rotary displacement pump NO306076B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4224969A DE4224969C1 (en) 1992-07-29 1992-07-29 Feed screw pair for rotating positive displacement pumps
PCT/DE1993/000595 WO1994003730A1 (en) 1992-07-29 1993-07-03 Pair of conveyor worms for rotary positive-displacement pumps

Publications (3)

Publication Number Publication Date
NO950310D0 NO950310D0 (en) 1995-01-27
NO950310L true NO950310L (en) 1995-03-24
NO306076B1 NO306076B1 (en) 1999-09-13

Family

ID=6464331

Family Applications (1)

Application Number Title Priority Date Filing Date
NO950310A NO306076B1 (en) 1992-07-29 1995-01-27 Transport screws for rotary displacement pump

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
EP1421282B1 (en) * 2001-08-27 2007-11-07 Arthur Vanmoor Fluid displacement pump with backpressure stop
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
EP0653021A1 (en) 1995-05-17
DE4224969C1 (en) 1993-09-30
ZA935312B (en) 1994-02-10
ES2089828T3 (en) 1996-10-01
NO306076B1 (en) 1999-09-13
JPH07509295A (en) 1995-10-12
ATE139304T1 (en) 1996-06-15
WO1994003730A1 (en) 1994-02-17
CN1042259C (en) 1999-02-24
EP0653021B1 (en) 1996-06-12
NO950310D0 (en) 1995-01-27
CA2141455A1 (en) 1994-02-17
CN1088666A (en) 1994-06-29

Similar Documents

Publication Publication Date Title
NO950310D0 (en) Transport screws for rotary displacement pump
EP1610036A3 (en) A lubrication arrangement
US8905733B2 (en) Progressing cavity pump/motor
ATE413531T1 (en) VOLUMETRIC ROTARY MACHINE WITH ROTORS HAVING ASYMMETRIC PROFILES
IT201600076227A1 (en) Bi-helical gear wheel with variable helix angle and non-encapsulating tooth profile for gear hydraulic equipment
GB1467441A (en) Hydraulic gear pumps and motors
EA200401091A1 (en) METHOD OF SEISMIC MIGRATION BASED ON THE USE OF DIRECT DEPTH EXTRAPOLATING OPERATORS WITH A DYNAMICALLY VARIABLE OPERATOR LENGTH
ES8707582A1 (en) Stackable rotary vane pump with improved volumetric efficiency.
DE50009059D1 (en) STATOR WITH STABLE RING
ATE11806T1 (en) GEAR PUMP OR MOTOR.
GB1473713A (en) Drum type molecular pump and method of manufacturing it
RU2591216C1 (en) Screw hydraulic machine with variable teeth tension
US5669765A (en) Pair of conveyor worms for rotary positive-displacement pumps
SU931965A1 (en) Gear pump
US9951619B2 (en) Actuator of a rotary positive displacement machine
SU573600A2 (en) Screw-type positive-displacement machine
ES2042175T3 (en) OPERATION PROCEDURE OF A VOLUMETRIC PUMP.
RU34981U1 (en) Regular microrelief plain bearing
RU2321768C1 (en) Screw hydraulic gerotor motor
EP1655490A8 (en) Oil pump rotor
RU2236534C1 (en) Vortex pressure stage of turbo-drill turbine
SU1645627A1 (en) Sliding-vane pump
RU22210U1 (en) SLIDING BEARING
CN206111942U (en) Super moment of torsion hold -in range
SU714048A1 (en) Pump for high viscous liquids

Legal Events

Date Code Title Description
MM1K Lapsed by not paying the annual fees

Free format text: LAPSED IN JANUARY 2003