EP1778980B1 - Pompe a vis sans fin excentrique pourvue d'un dispositif d'entrainement integre - Google Patents

Pompe a vis sans fin excentrique pourvue d'un dispositif d'entrainement integre Download PDF

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Publication number
EP1778980B1
EP1778980B1 EP05768100A EP05768100A EP1778980B1 EP 1778980 B1 EP1778980 B1 EP 1778980B1 EP 05768100 A EP05768100 A EP 05768100A EP 05768100 A EP05768100 A EP 05768100A EP 1778980 B1 EP1778980 B1 EP 1778980B1
Authority
EP
European Patent Office
Prior art keywords
rotor
screw pump
eccentric screw
pump according
impeller
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.)
Not-in-force
Application number
EP05768100A
Other languages
German (de)
English (en)
Other versions
EP1778980A1 (fr
Inventor
Helmut Jaberg
Dirk Schmidt
Ralf Schueler
Thomas Ribbe
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 EP1778980A1 publication Critical patent/EP1778980A1/fr
Application granted granted Critical
Publication of EP1778980B1 publication Critical patent/EP1778980B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • F04C15/06—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
    • 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
    • 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
    • F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • 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
    • F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • F04C15/0057—Driving elements, brakes, couplings, transmission specially adapted for machines or pumps
    • F04C15/0061—Means for transmitting movement from the prime mover to driven parts of the pump, e.g. clutches, couplings, transmissions
    • 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
    • F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • F04C15/0057—Driving elements, brakes, couplings, transmission specially adapted for machines or pumps
    • F04C15/008—Prime movers
    • 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 a screw or eccentric screw pump, as it is used in particular for the promotion of highly viscous or mixed with solids media.
  • Eccentric screw pumps that correspond to the prior art, usually have a fixed outer stator and a rotor running therein.
  • the drive of the rotor is usually carried out by an external electric motor, which is connected by means of a joint or bending shaft with the rotor.
  • an external electric motor which is connected by means of a joint or bending shaft with the rotor.
  • a major improvement here is the arrangement of the DE 102 51 846 A1
  • the propeller shaft can be omitted.
  • Such an arrangement has the disadvantage that only special, equipped with expensive magnetic materials rotors can be used.
  • due to the helical arrangement of the stator results in a relatively complex stator winding, which also leads here to relatively high production costs.
  • the EP 0 357 317 B1 discloses a motor which can simultaneously perform a rotational movement as well as a lifting movement, in conjunction with an eccentric screw pump. Again, an elastic stator is used without jacket to compensate for the eccentric movement of the screw. Thus, this pump is not suitable for high pressures.
  • the invention has for its object to design an eccentric screw pump such that the torque required to drive the pump without additional, the design of the pump extending means and are supplied without shaft seals and shaft bearings can and at the same time the pump is also suitable for high pressures.
  • the device according to the invention comprises an eccentric screw pump with a stator 2 and a rotor 1 running therein.
  • a drive motor is provided, which is connected to the rotor.
  • This rotor comprises a rotor 3 and a stator winding 4.
  • the rotor is designed as a cylindrical rotor and runs through its rigid connection with the rotor on an eccentric circular path within an approximately cylindrical pot 5 to.
  • This pot 5 is at least partially enclosed by a stator winding 4.
  • the stator winding can also be integrated in this pot.
  • the inventive arrangement can also account for the conversion member, such as a propeller shaft or bending shaft, for the transformation of the central rotation of the drive motor in the eccentric movement of the rotor.
  • the conversion member such as a propeller shaft or bending shaft
  • a second rotor 3a is provided as an approximately cylindrical rotor. It is arranged at the end of the rotor 1, which is opposite to the first runner. Also, this rotor is rigidly connected to the rotor and therefore also runs on an eccentric circular path within a second pot 5a. This second pot is also enclosed by a second stator winding or contains a second stator winding.
  • a further advantageous embodiment of the invention is that the motor of rotor 3 and stator winding 4 is designed in the form of a reluctance motor.
  • the stator winding on coils for generating a rotating magnetic field.
  • the rotor is a preferably tooth-shaped part made of magnetically conductive or soft magnetic material, such as iron.
  • the teeth align according to the magnetic field.
  • a control unit is for controlling the corresponding parts of the stator winding. 4 provided. This controls now the current flow through the stator winding such that for generating a torque, the flux is preferably passed through those areas of the pot 5, which have a minimum distance from the surface of the rotor 3.
  • a position sensor is preferably provided which sgnalome the exact position of the rotor or of the rotor with respect to the stator.
  • a position sensor can also be realized, for example, with the aid of the magnets integrated in the rotor.
  • the motor is designed in the form of an asynchronous motor.
  • the rotor is designed as a resistance rotor or preferably as a squirrel-cage rotor.
  • windings for generating a rotating field are provided in the stator winding. Due to the rotating field, voltages are induced in the rotor windings or in the conductive rotor structure which, depending on the electrical resistance of the windings or the conductive rotor structure, lead to corresponding currents. These currents in turn cause a magnetic field and thus a torque.
  • an optional control circuit advantageously a frequency converter, for generating the phase-shifted variable frequency signals for generating a rotating field with the desired rotational frequency is provided.
  • grooves for receiving rotor windings may be provided in the rotor.
  • Another embodiment of the invention provides that in the rotor 3, preferably axial bores are mounted, through which the medium can flow.
  • a diversion channel for the medium is no longer necessary. This results in a particularly compact, space-saving design of the arrangement.
  • the magnetic components or permanent magnets in the rotor and the coils in the stator are arranged such that a predetermined force is exerted in the axial direction of the rotor. It is particularly advantageous if the axial force counteracts the pump pressure with the same magnitude.
  • a bearing regulator is preferably used, which controls the position of the rotor by means of at least one position sensor.
  • Another embodiment of the invention provides a rotor which is displaceable in the axial direction by the axial force. By such displaceability, the reduction of the breakaway torque can be achieved at the pump start.
  • the pump outlet can be closed by the rotor itself.
  • a valve body can be actuated by the axial movement of the rotor. This allows especially for dosing pumps a particularly fine and follow-up dosing.
  • coils are polarized in the rotor opposite to the coils, which transmit the torque to the rotor.
  • a force is generated in the rotor, which counteracts the flow direction of the pumped medium and thus compensates or reduces the hydraulic forces generated by the medium on the end faces of the rotor.
  • the necessary number of reversely poled coils can be variably adjusted to the generated delivery pressure.
  • a device according to the invention is shown schematically in a section perpendicular to the axis of rotation.
  • An eccentric screw pump has a rotor 1, which moves in a stator 2.
  • the rotor 1 is rigidly connected to a rotor 3.
  • the runner runs on an eccentric path within the pot 5.
  • the medium to be conveyed in this case passes through the pot 5.
  • To generate the torque at least one stator winding 4 is provided.
  • the stator winding is integrated in the embodiment in the pot, but may preferably be arranged outside the pot and thus outside the medium. She can, too optionally integrated into the pot, for example, be potted.
  • the stator winding has individual coils. These coils can be supplied by a control unit optionally with power.
  • a position sensor is preferably provided, which signals the exact position of the rotor or the rotor with respect to the stator or the pot.
  • a position sensor can also be realized, for example, by or with the aid of the magnets integrated in the rotor.
  • Fig. 2 shows the arrangement previously shown in a perspective view.
  • FIG. 3 shows a further device according to the invention with a second rotor 3a.
  • This second rotor is arranged on the opposite end of the first rotor of the rotor. Accordingly, the second rotor is also associated with a second pot 5a and a second stator winding 4a for generating the torque.
  • the two runners are designed such that they generate a mutually directed axial thrust, which holds the two runners and the rotor in a predetermined position.
  • the runners can advantageously be formed at least slightly conical.
  • Fig. 4 shows the arrangement previously shown in a perspective view.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Percussion Or Vibration Massage (AREA)

Claims (12)

  1. Pompe à vis sans fin excentrique, comprenant un stator (2) et un rotor (1) fonctionnant dans ce dernier, ainsi qu'un moteur d'entraînement pour entraîner le rotor, qui est relié avec le rotor (1), comprenant un enroulement de stator (4), un induit (3, 3a), qui est conçu sous la forme d'un induit approximativement cylindrique, caractérisée en ce que l'induit tourne sur une trajectoire circulaire excentrique à l'intérieur d'un pot (5) approximativement cylindrique, sur lequel est disposé l'enroulement de stator (4), l'induit et le rotor étant rigidement reliés.
  2. Pompe à vis sans fin excentrique selon la revendication 1,
    caractérisée en ce que
    un deuxième induit (3a) sous forme d'un induit approximativement cylindrique est disposé sur l'extrémité du rotor (1) qui est opposée au premier induit et tourne sur une trajectoire circulaire excentrique au sein d'un pot approximativement cylindrique (5a), sur lequel est disposé le deuxième enroulement de stator (4a).
  3. Pompe à vis sans fin excentrique selon la revendication 1 ou 2,
    caractérisée en ce que
    plusieurs rotors (1) avec chaque fois un induit (3) suivant ce dernier sont disposés dans une chaîne d'induits et de rotors.
  4. Pompe à vis sans fin excentrique selon l'une quelconque des revendications précédentes,
    caractérisée en ce que,
    dans l'induit (3) sont prévus des aimants permanents, des aimants à réluctance ou des matières électromagnétiques souples.
  5. Pompe à vis sans fin excentrique selon l'une quelconque des revendications précédentes,
    caractérisée en ce que,
    il est prévu une unité de commande, qui actionne les éléments correspondants de l'enroulement de stator (4) en fonction de la position de l'induit (3), de sorte qu'un couple soit exercé sur le rotor, le flux magnétique étant guidé de préférence par les zones du pot (5) qui présentent une distance minimale par rapport à la surface de l'induit (3).
  6. Pompe à vis sans fin excentrique selon l'une quelconque des revendications précédentes,
    caractérisée en ce que,
    l'induit (3) comporte des perçages, à travers lesquels le milieu peut circuler.
  7. Pompe à vis sans fin excentrique selon l'une quelconque des revendications précédentes,
    caractérisée en ce que,
    que dans l'induit (3), des aimants permanents et par ailleurs des bobines (4) sont disposés de sorte qu'une force axiale prédéfinie soit exercée sur le rotor (1).
  8. Pompe à vis sans fin excentrique selon l'une quelconque des revendications précédentes,
    caractérisée en ce que,
    dans l'induit (3), des aimants permanents ou des bobines (4) sont disposés en groupes, les forces axiales des groupes individuels agissant sur le rotor, dans des directions de préférence opposées.
  9. Pompe à vis sans fin excentrique selon la revendication 7 ou 8, caractérisée en ce que,
    le rotor est déplaçable en direction axiale, par la force axiale.
  10. Pompe à vis sans fin excentrique selon la revendication 7 ou 8,
    caractérisée en ce que
    pour réduire le couple de décollage au démarrage de la pompe, une force axiale supplémentaire est exercée ou un déplacement axial supplémentaire est réalisé.
  11. Pompe à vis sans fin excentrique selon la revendication 7 ou 8,
    caractérisée en ce que
    un déplacement axial supplémentaire est utilisé pour fermer la sortie de la pompe ou pour actionner un corps de soupape.
  12. Pompe à vis sans fin excentrique selon l'une quelconque des revendications précédentes,
    caractérisée en ce que,
    un déplacement axial supplémentaire est utilisé pour fermer la sortie de la pompe ou pour actionner un corps de soupape.
EP05768100A 2004-08-10 2005-07-15 Pompe a vis sans fin excentrique pourvue d'un dispositif d'entrainement integre Not-in-force EP1778980B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004038686A DE102004038686B3 (de) 2004-08-10 2004-08-10 Exzenterschneckenpumpe mit integriertem Antrieb
PCT/DE2005/001251 WO2006015571A1 (fr) 2004-08-10 2005-07-15 Pompe a vis sans fin excentrique pourvue d'un dispositif d'entrainement integre

Publications (2)

Publication Number Publication Date
EP1778980A1 EP1778980A1 (fr) 2007-05-02
EP1778980B1 true EP1778980B1 (fr) 2007-10-31

Family

ID=34802032

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05768100A Not-in-force EP1778980B1 (fr) 2004-08-10 2005-07-15 Pompe a vis sans fin excentrique pourvue d'un dispositif d'entrainement integre

Country Status (13)

Country Link
US (1) US20070104595A1 (fr)
EP (1) EP1778980B1 (fr)
JP (1) JP2008509335A (fr)
KR (1) KR100874043B1 (fr)
CN (1) CN100460680C (fr)
AT (1) ATE377150T1 (fr)
BR (1) BRPI0513307A (fr)
CA (1) CA2553795C (fr)
DE (3) DE102004038686B3 (fr)
ES (1) ES2294727T3 (fr)
MX (1) MXPA06011759A (fr)
RU (1) RU2361116C2 (fr)
WO (1) WO2006015571A1 (fr)

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JP5190618B2 (ja) * 2007-08-20 2013-04-24 兵神装備株式会社 ロータ駆動機構及びポンプ装置
DE102008039973A1 (de) * 2008-08-27 2010-03-04 Wmf Württembergische Metallwarenfabrik Ag Exzenterschneckenpumpe
DE102009024088A1 (de) 2009-06-06 2010-12-09 Zeus Gmbh Reifenfüllmasse, Verfahren zur Herstellung einer Reifenfüllung und Vorrichtung zur Durchführung des Verfahrens
MD4338C1 (ro) * 2013-05-21 2015-10-31 Юрий ЩИГОРЕВ Pompă electrică cu şnec cu răcire autonomă
CN103423064B (zh) * 2013-08-29 2016-12-28 中矿瑞杰(北京)科技有限公司 一种液力马达
PT2944819T (pt) 2014-05-12 2017-10-02 Hugo Vogelsang Maschb Gmbh Bomba de parafuso excêntrico
JP6635694B2 (ja) * 2014-08-05 2020-01-29 兵神装備株式会社 ポンプ体、ポンプ装置、流量計及び発電機
WO2017154023A1 (fr) * 2016-03-07 2017-09-14 Sona Pumps Moteur doté d'une pompe hélicoïdale à déplacement positif à l'intérieur d'un arbre de moteur
BE1025347B1 (nl) * 2017-06-28 2019-02-05 Atlas Copco Airpower Naamloze Vennootschap Cilindrisch symmetrische volumetrische machine
CN113062859A (zh) * 2021-04-21 2021-07-02 中国石油大学(华东) 一种转子内置式机泵一体全金属螺杆泵采油装置

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Also Published As

Publication number Publication date
BRPI0513307A (pt) 2008-05-06
DE112005002517A5 (de) 2007-07-12
RU2361116C2 (ru) 2009-07-10
MXPA06011759A (es) 2007-05-31
CN101006276A (zh) 2007-07-25
EP1778980A1 (fr) 2007-05-02
CN100460680C (zh) 2009-02-11
KR100874043B1 (ko) 2008-12-12
CA2553795C (fr) 2009-07-14
DE102004038686B3 (de) 2005-08-25
JP2008509335A (ja) 2008-03-27
RU2006145438A (ru) 2008-09-20
CA2553795A1 (fr) 2006-02-16
KR20070033954A (ko) 2007-03-27
DE502005001849D1 (de) 2007-12-13
US20070104595A1 (en) 2007-05-10
ES2294727T3 (es) 2008-04-01
WO2006015571A1 (fr) 2006-02-16
ATE377150T1 (de) 2007-11-15

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