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WO2004081385A8 - Eccentric screw pump - Google Patents

Eccentric screw pump

Info

Publication number
WO2004081385A8
WO2004081385A8 PCT/DE2004/000538 DE2004000538W WO2004081385A8 WO 2004081385 A8 WO2004081385 A8 WO 2004081385A8 DE 2004000538 W DE2004000538 W DE 2004000538W WO 2004081385 A8 WO2004081385 A8 WO 2004081385A8
Authority
WO
WIPO (PCT)
Prior art keywords
rotor
head part
area
recess
pressure
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.)
Ceased
Application number
PCT/DE2004/000538
Other languages
German (de)
French (fr)
Other versions
WO2004081385A1 (en
Inventor
Peter Roesner
Anke Stegner
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DE502004000924T priority Critical patent/DE502004000924D1/en
Priority to DE112004000856T priority patent/DE112004000856D2/en
Priority to EP04719362A priority patent/EP1601875B1/en
Publication of WO2004081385A1 publication Critical patent/WO2004081385A1/en
Anticipated expiration legal-status Critical
Publication of WO2004081385A8 publication Critical patent/WO2004081385A8/en
Ceased 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

Landscapes

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

Abstract

The invention relates to an eccentric screw pump (1) comprising a stator (2) and a rotor (3) between which the material, which is to be transported, is displaced when the rotor (3) is rotated in the stator (2) from an inlet area (4) on the suction side to a discharge area (5) on the pressure side. Said pump comprises a rotor head part (7) which closes the pressure-side discharge area (5) and which is fixed to the front (6) of the rotor (3), rotating therewith. Said rotor head part comprises at least one recess (8) which transverses the head part and which is disposed in the rotor head part (7) in relation to the rotor surface (6) which is to be maintained, such that the recess (8), which rotates at the same time as the rotor (3) in the direction of conveyance (10), opens up the pressure volume area (11, 11') and a recess-free rotor head part area (13) keeps the opposite-lying suction volume area (12, 12') sealed while the pressure volume area (12, 12') is opened.
PCT/DE2004/000538 2003-03-12 2004-03-11 Eccentric screw pump Ceased WO2004081385A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE502004000924T DE502004000924D1 (en) 2003-03-12 2004-03-11 Cavity Pump
DE112004000856T DE112004000856D2 (en) 2003-03-12 2004-03-11 Cavity Pump
EP04719362A EP1601875B1 (en) 2003-03-12 2004-03-11 Eccentric screw pump

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE20304292.1 2003-03-12
DE20304292U DE20304292U1 (en) 2003-03-12 2003-03-12 Cavity Pump

Publications (2)

Publication Number Publication Date
WO2004081385A1 WO2004081385A1 (en) 2004-09-23
WO2004081385A8 true WO2004081385A8 (en) 2006-02-16

Family

ID=7980896

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2004/000538 Ceased WO2004081385A1 (en) 2003-03-12 2004-03-11 Eccentric screw pump

Country Status (6)

Country Link
EP (1) EP1601875B1 (en)
CN (1) CN100429402C (en)
AT (1) ATE332443T1 (en)
DE (3) DE20304292U1 (en)
ES (1) ES2268641T3 (en)
WO (1) WO2004081385A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013003833A1 (en) * 2013-03-07 2014-09-11 Wilo Se Pump with overpressure protection
CN104405631B (en) * 2014-09-30 2016-06-01 余雷 A kind of can the pump head of deep water intake
CN106685152B (en) * 2015-11-10 2019-03-12 耐驰（兰州）泵业有限公司 Manufacture for eccentrie helical totorpump can hydraulic adjustment stator method
CN108000836B (en) * 2017-12-11 2023-08-29 华南理工大学 Melt conveying flow balance compensation method and stabilizing device of eccentric rotor extruder

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
HU175810B (en) * 1977-12-28 1980-10-28 Orszagos Koolaj Gazipari Axial-flow multiple-purpose flow apparatus
DE3641855A1 (en) * 1986-12-08 1988-06-16 Allweiler Ag Werk Bottrop Adjustable stator for eccentric screw pumps
US4802827A (en) * 1986-12-24 1989-02-07 Kabushiki Kaisha Toshiba Compressor
JP2897844B2 (en) * 1990-10-26 1999-05-31 兵神装備株式会社 Single shaft eccentric screw pump
CN2100511U (en) * 1991-04-16 1992-04-01 王时正 Internal engagement epicycloidal oil pump
DE20215849U1 (en) * 2002-10-10 2003-01-09 Löffler, Norbert, Dr., 01734 Rabenau Helical pump has stator and rotor discharging via back-flow prevention valve

Also Published As

Publication number Publication date
DE502004000924D1 (en) 2006-08-17
EP1601875B1 (en) 2006-07-05
DE112004000856D2 (en) 2006-02-02
CN1791750A (en) 2006-06-21
ATE332443T1 (en) 2006-07-15
ES2268641T3 (en) 2007-03-16
CN100429402C (en) 2008-10-29
DE20304292U1 (en) 2003-05-15
EP1601875A1 (en) 2005-12-07
WO2004081385A1 (en) 2004-09-23

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