EP1338796B1 - Pompe Moineau - Google Patents

Pompe Moineau Download PDF

Info

Publication number
EP1338796B1
EP1338796B1 EP03002763A EP03002763A EP1338796B1 EP 1338796 B1 EP1338796 B1 EP 1338796B1 EP 03002763 A EP03002763 A EP 03002763A EP 03002763 A EP03002763 A EP 03002763A EP 1338796 B1 EP1338796 B1 EP 1338796B1
Authority
EP
European Patent Office
Prior art keywords
screw
rotor
progressive cavity
pump according
flexible shaft
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 - Lifetime
Application number
EP03002763A
Other languages
German (de)
English (en)
Other versions
EP1338796A2 (fr
EP1338796A3 (fr
Inventor
Reinhard Denk
Bernhard Murrenhof
Christopher Martin Gwalchmai
Johann Kreidl
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.)
Netzsch Pumpen and Systeme GmbH
Original Assignee
Netzsch Pumpen and Systeme GmbH
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 Netzsch Pumpen and Systeme GmbH filed Critical Netzsch Pumpen and Systeme GmbH
Publication of EP1338796A2 publication Critical patent/EP1338796A2/fr
Publication of EP1338796A3 publication Critical patent/EP1338796A3/fr
Application granted granted Critical
Publication of EP1338796B1 publication Critical patent/EP1338796B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F04C13/00—Adaptations of machines or pumps for special use, e.g. for extremely high pressures
    • F04C13/001—Pumps for particular liquids
    • 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

Definitions

  • the invention relates to an eccentric screw pump, consisting of a pump part with a tubular pump housing, with a Statorausdire with a corresponding two-or multi-start screw shaped pump cavity, with a charging housing and with a drive and with a helical rotor, by means of a flexible shaft with a Drive shaft is connected and the flexible shaft is connected at its two ends via rigid coupling elements with the rotor and the drive shaft.
  • Such a pump construction is known from EP 0 657 649 B1.
  • the flexible shaft used there has a large radial distance from the inlet housing.
  • the flexible shaft is here by a screw connection to the drive shaft and a coupling which transmits the torque via a pin connected to the rotor head.
  • the pin is covered by a sleeve slid onto the rotor head.
  • the product supplied to the inlet housing passes into the rotor / stator area solely from the introduced pressure and the suction power of the pump.
  • an eccentric screw pump shows, in which a rigid connecting shaft between a helical rotor and a drive shaft is arranged. On the drive-side end of the connecting shaft sits a drive sleeve that holds a flying screw auger and rotate. The auger receives a certain smoothness and inherent stability in that it is constantly supported on the inner wall of the inlet housing.
  • the invention is based on the knowledge that it is necessary with increasing viscosity of the product to be conveyed to create an additional conveying effect in the feed housing of the pump.
  • an additional one Screw conveyor known in connection with the use of flexible shafts.
  • the invention also addresses the problem of unnecessary weight loading with a corresponding stability of the screw conveyor. So it has surprisingly been found that the screw conveyor can be shaped depending on the size with very thin and narrow material when the material is under a certain bias. This bias is expressed in the clamping path of the screw, which corresponds to 0.05 to 0.5 times the rotor diameter.
  • the bias is applied to the screw conveyor by positively deforming the screw by a value corresponding to the aforementioned tolerance range. This deformation is done by a mechanical stretching of the screw conveyor.
  • the screw conveyor is fixedly attached to one side of the flexible shaft or the coupling element located on this side on one of its sides and attached to the opposite side of the flexible shaft after spreading.
  • the screw conveyor can also be imposed a negative bias by the auger experiences a compression.
  • the value by which the screw conveyor is compressed is within the same tolerance range as with the positive preload. Due to the bias of the auger of the screw body remains dimensionally stable during the rotational movement, while the bending rod is deformed or twisted in accordance with the eccentricity generated by the rotor.
  • the weight savings resulting from the material savings for the screw conveyor has a positive effect on the wear reduction of all rotating parts and the related parts noticeable.
  • the compound of the screw conveyor with the flexible shaft and / or the drive shaft is apparent.
  • the screw conveyor which is provided for example on both sides with a welded ring, either by means of screws positive or positive connections received.
  • the pump shown in Fig. 1 consists of a pump part 10, a charging housing 12 and a housing 14, in or on which a seal 16 and a bearing 18 are attached or housed.
  • a stator 20 is composed of a tubular pump housing 22 and a stator liner 24. The stator is clamped between two flanges 26, 26 'by screws 28, 28'.
  • the stator liner 24 has a two-flighted helical pump cavity 30.
  • a flange 26 is provided with a connecting piece 32.
  • a coupling element 38 ensures the rigid connection to the flexible shaft 40. Coaxial with the bending rod 40 extends over the entire length of a screw conveyor 42 which has a radial distance both to the flexible shaft 40 and to the inside of the conveyor housing.

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)

Claims (7)

  1. Pompe à vis sans fin excentrique comprenant
    - une partie de pompe (10)
    - avec un carter de pompe (22) de forme tubulaire avec un habillage de stator (24) avec une cavité de pompe (30) formée en fonction d'une vis sans fin à un ou deux pas
    - avec un boîtier d'alimentation (12)
    - avec un entraînement
    - avec un rotor (34) en forme de vis sans fin, qui est relié au moyen d'un arbre (40) souple à un arbre d'entraînement (54)
    - l'arbre (40) souple étant relié par ses deux extrémités au moyen d'éléments de couplage (38, 48) rigides au rotor (34) et à l'arbre d'entraînement (54),
    caractérisée en ce que
    l'arbre (40) souple est entouré par une vis sans fin (42) disposée sur le même axe, qui est soumise à une pré-tension positive sous la forme d'un étirement ou sous la forme d'une pré-tension négative sous la forme d'un refoulement.
  2. Pompe à vis sans fin excentrique selon la revendication 1,
    caractérisée en ce que
    la course de serrage de la vis sans fin (42) représente 0,05 à 0,5 fois le diamètre du rotor.
  3. Pompe à vis sans fin excentrique selon l'une quelconque des revendications précédentes,
    caractérisée en ce que
    la vis sans fin (42) présente un élément annulaire (44, 44') au moins sur une extrémité.
  4. Pompe à vis sans fin excentrique selon la revendication 5,
    caractérisée en ce que
    l'arbre (40) souple présente au moins sur une extrémité un élément de couplage (38, 48) rigide sur lequel est fixé l'élément annulaire (44, 44').
  5. Pompe à vis sans fin excentrique selon l'une quelconque des revendications précédentes,
    caractérisée en ce que
    la vis sans fin (42) est reliée par complémentarité de forme au rotor (34) et/ou à l'arbre d'entraînement (54).
  6. Pompe à vis sans fin excentrique selon les revendications 1 à 6,
    caractérisée en ce que
    la vis sans fin (42) est reliée par adhérence de force ou par adhérence de frottement au rotor (34) et/ou à l'arbre d'entraînement (54).
  7. Pompe à vis sans fin excentrique selon l'une quelconque des revendications précédentes,
    caractérisée en ce que
    la vis sans fin (42) est à base d'un matériau plat.
EP03002763A 2002-02-22 2003-02-07 Pompe Moineau Expired - Lifetime EP1338796B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10207483 2002-02-22
DE10207483A DE10207483C1 (de) 2002-02-22 2002-02-22 Exzenterschneckenpumpe

Publications (3)

Publication Number Publication Date
EP1338796A2 EP1338796A2 (fr) 2003-08-27
EP1338796A3 EP1338796A3 (fr) 2003-10-29
EP1338796B1 true EP1338796B1 (fr) 2006-05-31

Family

ID=7713903

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03002763A Expired - Lifetime EP1338796B1 (fr) 2002-02-22 2003-02-07 Pompe Moineau

Country Status (4)

Country Link
US (1) US7040878B2 (fr)
EP (1) EP1338796B1 (fr)
AT (1) ATE328201T1 (fr)
DE (2) DE10207483C1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060011656A1 (en) * 2004-07-16 2006-01-19 Ming-Te Tu Liquid extruding device
BRPI0815403A2 (pt) * 2007-08-17 2015-02-03 Seepex Gmbh Bomba de parafuso excêntrico com estator dividido
US8726981B2 (en) * 2011-06-01 2014-05-20 Baker Hughes Incorporated Tandem progressive cavity pumps
JP2013158747A (ja) * 2012-02-08 2013-08-19 Nishihara Environment Co Ltd 汚泥脱水システム
US8967985B2 (en) 2012-11-13 2015-03-03 Roper Pump Company Metal disk stacked stator with circular rigid support rings
DE102014116779B4 (de) * 2014-11-17 2016-07-21 Pumpenfabrik Wangen Gmbh System zur Förderung viskoser Medien und Verfahren zum Fördern eines viskosen Mediums mit einem solchen System
DE102015104300B4 (de) * 2015-03-23 2016-12-01 Pumpenfabrik Wangen Gmbh Exzenterschneckenpumpe und Verfahren zum Ausbau eines Stators aus einer derartigen Exzenterschneckenpumpe
FR3133065B1 (fr) * 2022-02-28 2024-03-15 Pcm Tech Dispositif de pompage

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE37294C (de) * STREHLE in München, Amalienstr. 77 I Bremsvorrichtung an Fahrrädern. 0
DE1553201A1 (de) * 1966-04-27 1971-02-18 Schlecht Karl Exzenter-Schneckenpumpe mit zentrischer Ruehrschnecke
DE6916941U (de) * 1969-04-26 1969-08-21 G A Kiesel Ges Mit Beschraenkt Exzenterschneckenpumpe
DE2316127A1 (de) * 1973-03-30 1974-10-10 Netzsch Mohnopumpen Gmbh Exzenterschneckenpumpe
GB2284646B (en) * 1993-12-09 1996-01-10 Mono Pumps Ltd Rotor and flexible drive shaft assembly
JPH07223718A (ja) * 1994-02-10 1995-08-22 Denyou Kakoki Kk スクリューポンプ
DE4408659A1 (de) * 1994-03-15 1995-09-21 Koch Marmorit Gmbh Vorrichtung zum Pumpen von zähflüssigen Materialien, insbesondere angemachten Baumaterialien
JPH07328698A (ja) * 1994-05-31 1995-12-19 Heishin Sobi Kk 脱水ケーキ用サンプリングポンプ
JPH1077974A (ja) * 1996-09-03 1998-03-24 Heishin Sobi Kk 一軸偏心ねじポンプ
JP2000145660A (ja) * 1998-11-04 2000-05-26 Shin Nippon Machinery Co Ltd 一軸偏心ねじポンプ
JP2001271764A (ja) * 2000-03-27 2001-10-05 Shin Nippon Machinery Co Ltd 一軸偏心ねじポンプ

Also Published As

Publication number Publication date
US7040878B2 (en) 2006-05-09
US20040028546A1 (en) 2004-02-12
EP1338796A2 (fr) 2003-08-27
DE10207483C1 (de) 2003-06-18
ATE328201T1 (de) 2006-06-15
DE50303530D1 (de) 2006-07-06
EP1338796A3 (fr) 2003-10-29

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