EP2295800A2 - Pompe à vis sans fin excentrique - Google Patents

Pompe à vis sans fin excentrique Download PDF

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Publication number
EP2295800A2
EP2295800A2 EP10172673A EP10172673A EP2295800A2 EP 2295800 A2 EP2295800 A2 EP 2295800A2 EP 10172673 A EP10172673 A EP 10172673A EP 10172673 A EP10172673 A EP 10172673A EP 2295800 A2 EP2295800 A2 EP 2295800A2
Authority
EP
European Patent Office
Prior art keywords
rotor
shaft
pump body
eccentric screw
screw
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.)
Withdrawn
Application number
EP10172673A
Other languages
German (de)
English (en)
Other versions
EP2295800A3 (fr
Inventor
André Hellinger
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.)
BARTEC Dispensing Technology GmbH
Original Assignee
BARTEC Dispensing Technology 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=43304804&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP2295800(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by BARTEC Dispensing Technology GmbH filed Critical BARTEC Dispensing Technology GmbH
Publication of EP2295800A2 publication Critical patent/EP2295800A2/fr
Publication of EP2295800A3 publication Critical patent/EP2295800A3/fr
Withdrawn legal-status Critical Current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
    • 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
    • F04C15/0073—Couplings between rotors and input or output shafts acting by interengaging or mating parts, i.e. positive coupling of rotor and shaft
    • 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
    • F04C15/0003—Sealing arrangements in rotary-piston machines or pumps
    • F04C15/0034—Sealing arrangements in rotary-piston machines or pumps for other than the working fluid, i.e. the sealing arrangements are not between working chambers of the machine
    • F04C15/0038—Shaft sealings specially adapted for rotary-piston machines or pumps
    • 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
    • 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
    • F04C2230/00—Manufacture
    • F04C2230/60—Assembly methods
    • 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
    • F04C2230/00—Manufacture
    • F04C2230/70—Disassembly methods
    • 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
    • F04C2240/00—Components
    • F04C2240/60—Shafts

Definitions

  • the invention relates to an eccentric screw pump, comprising a pump body with a relative to the pump body rotatable screw-like rotor, which is coupled via a connecting means with a drive motor, via which the conveying element is rotatable.
  • Eccentric screw pumps serve to convey fluid media.
  • the rotor is usually made of a sufficiently strong material, usually stainless steel
  • the stator is made of an elastic material, usually a rubber or plastic material.
  • compartments which move during the rolling movement in the axial direction to a housing outlet.
  • the fluid material to be delivered is introduced into the housing at a position above the rotor-stator arrangement.
  • the basic structure and operation of such an eccentric screw pump is well known.
  • the drive of the rotor via a housing side to be connected to the drive motor, which is coupled in known eccentric screw directly with the coiled rotor.
  • corresponding connecting means are provided on the rotor as well as on the output shaft of the drive motor.
  • the invention is thus based on the problem of specifying a progressing cavity pump, which allows a simpler change of the rotor.
  • an eccentric screw pump of the type mentioned that the connecting means is rotatably mounted in the pump body and the pump body via at least one sealing element sealed connection shaft to which the rotor is detachably attached.
  • the rotor itself is not rotatably mounted and sealed to the pump housing. He is also not directly to couple with the drive motor. Rather, according to the invention a rotationally mounted in the pump body rotatably mounted connection shaft is provided, on the one hand has the connecting means for coupling the drive motor, and on the other hand has corresponding connection means for releasably securing the rotor at the other end of the shaft.
  • the rotor itself is not rotatably mounted in the pump body or sealed off to this, this is provided solely by the connection shaft.
  • a particularly simple type of detachable connection between the rotor and the connecting shaft is inventively characterized in that the connecting shaft is a hollow shaft, in which a screwed into the rotor, mounted counter to the hollow shaft connecting screw is inserted.
  • the hollow shaft is accessible from its end serving for coupling the drive motor end side, from this side, the connecting screw is used.
  • the rotor has a corresponding internal thread, in which the screw is screwed, about which the rotor is axially and rotatably coupled to the drive shaft.
  • a sealing ring is preferably arranged below the screw head.
  • a plug-in sleeve is expediently provided with the internal thread, which engages in a counter-mounted socket on the hollow shaft.
  • At least one sealing element can furthermore be arranged between the connecting shaft and the rotor.
  • Rotor and connecting shaft are axially seen with corresponding shoulders together, in between a suitable sealing ring can be arranged, which also ensures a complete seal here.
  • FIG. 1 shows a sectional view of an eccentric screw pump 1 according to the invention comprising a pump body 2 consisting of a first body part 3 and a second body part 4, in which a rotatable rotor 5, which extends through both body parts 3, 4, and a positionally fixed stator 6, the second body part 4 is arranged are received.
  • Via inlets 7, 8 can be supplied to be conveyed fluid medium, which passes in the diameter larger than the rotor 5 designed pump body in the effective range between the rotor 5 and stator 6, where it is discharged from there via an outlet 9.
  • the rotor 5 has a coiled, helical metal rotor section 10, the inner side 11 of the stator 6 is also helically wound, so that it comes to the formation of longitudinally to the outlet 9 "migrating" cavities, so-called compartments, in which the fluid medium is transported.
  • the rotor 5 itself has in addition to the helical rotor portion 10 via a flexible, wave-like portion 12, which allows an eccentric movement of the rotor 5.
  • the flexible rotor portion 12 is fixedly connected to the helical rotor portion 10 via a retaining sleeve 13, at the other end of the flexible rotor portion 12 is a further retaining sleeve 14 is provided, which will be discussed below, the releasable coupling is used to a connection shaft.
  • the basic structure of such an eccentric screw pump as well as a rotor 5 and stator 6 is well known and need not be explained.
  • connection shaft 15 is provided, which is rotatably mounted on the housing body 3 in the example shown two bearings 16. About seals 17, the connecting shaft 15 is sealed to the pump body 2 respectively to the body member 3, so that the discontinued before the seals 17 material can not get in the direction of the connecting shaft 15.
  • the connecting shaft 15 has at its right end shown in the figure via connecting means for releasably coupling to a drive motor respectively the output shaft thereof. It is designed as a hollow shaft 19 to receive a connecting screw 20 which serves to releasably fix the rotor 5.
  • the hollow shaft 19 on the one hand on an inwardly projecting stop collar 21 on which the screw head 22 is superimposed.
  • An insertion opening 23 leads into a socket 24 whose inner diameter is slightly larger than the outer diameter of a socket 25 which is formed on the bushing 14 and has an internal thread 26 into which the shank of the connecting screw 20 is screwed.
  • sealing element 27 for example a sealing ring or a sealing washer, received, in a groove 28 at the free end of the socket 24 is another sealing element 29, also in the form of a sealing ring provided.
  • sealing element 27 is a secure seal in the screw head bearing, via the sealing element 29, the transition between the rotor 5 and the connecting shaft 15 is sealed.
  • the second body component 4 which is screwed to the first body component 3 via a screw connection 30, is unscrewed, so that the stator 6, which consists of a soft, elastic material, is unscrewed from the rotor 5 respectively can be deducted from the rotor section 10.
  • connection shaft 15 remains rotatably mounted and completely sealed in the pump body 2 and the body part 3, after neither the rolling bearings 16 nor the seals 17 to remove the rotor 5 are to be removed. This is because in the eccentric screw pump according to the invention, the connection shaft 15 is rotatably mounted and received sealed to the pump body 2 out, but not the rotor 5 itself.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
EP10172673A 2009-08-20 2010-08-12 Pompe à vis sans fin excentrique Withdrawn EP2295800A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200910037993 DE102009037993B4 (de) 2009-08-20 2009-08-20 Exzenterschneckenpumpe

Publications (2)

Publication Number Publication Date
EP2295800A2 true EP2295800A2 (fr) 2011-03-16
EP2295800A3 EP2295800A3 (fr) 2012-06-13

Family

ID=43304804

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10172673A Withdrawn EP2295800A3 (fr) 2009-08-20 2010-08-12 Pompe à vis sans fin excentrique

Country Status (2)

Country Link
EP (1) EP2295800A3 (fr)
DE (1) DE102009037993B4 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102734155A (zh) * 2012-07-20 2012-10-17 赵锡寰 潜油螺杆泵机组的节能启动装置
CN103075336A (zh) * 2013-02-23 2013-05-01 赵润波 自止推单螺杆泵系统
WO2019154571A1 (fr) * 2018-02-06 2019-08-15 Seepex Gmbh Pompe à cavité progressive
US12018688B2 (en) 2022-02-14 2024-06-25 Johnson & Johnson Surgical Vision, Inc. Sealing assembly for a progressive cavity pump

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018002084A1 (de) * 2018-03-15 2019-09-19 bdtronic GmbH Verfahren und Vorrichtung zum Erhitzen eines Verbindungselementes

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1346417A (fr) * 1962-11-07 1963-12-20 Machine à engrenages perfectionnée, utilisable en particulier comme pompe, compresseur ou moteur
FR2498264A1 (fr) * 1981-01-19 1982-07-23 Mecanique Metallurgie Ste Gle Perfectionnements apportes aux pompes a engrenage
EP0155755A2 (fr) * 1984-03-21 1985-09-25 Mono Pumps Limited Arbre de commande flexible
GB9303507D0 (en) * 1993-02-22 1993-04-07 Mono Pumps Ltd Progressive cavity pump or motors
JP2001271764A (ja) * 2000-03-27 2001-10-05 Shin Nippon Machinery Co Ltd 一軸偏心ねじポンプ
DE102004060222A1 (de) * 2004-12-15 2006-06-29 Netzsch-Mohnopumpen Gmbh Exzenterschneckenpumpe in Kompaktbauweise
JP2006226280A (ja) * 2005-01-24 2006-08-31 Heishin Engineering & Equipment Co Ltd 一軸偏心ねじポンプ
US20090252630A1 (en) * 2005-08-12 2009-10-08 Heishin Sobi Kabushiki Kaisha Single-Shaft Eccentric Screw Pump
EP1988289A1 (fr) * 2007-05-03 2008-11-05 Knoll Maschinenbau Gmbh Interface

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102734155A (zh) * 2012-07-20 2012-10-17 赵锡寰 潜油螺杆泵机组的节能启动装置
CN102734155B (zh) * 2012-07-20 2014-12-03 赵锡寰 潜油螺杆泵机组的节能启动装置
CN103075336A (zh) * 2013-02-23 2013-05-01 赵润波 自止推单螺杆泵系统
WO2019154571A1 (fr) * 2018-02-06 2019-08-15 Seepex Gmbh Pompe à cavité progressive
US12018688B2 (en) 2022-02-14 2024-06-25 Johnson & Johnson Surgical Vision, Inc. Sealing assembly for a progressive cavity pump

Also Published As

Publication number Publication date
DE102009037993B4 (de) 2014-07-03
DE102009037993A8 (de) 2011-06-01
EP2295800A3 (fr) 2012-06-13
DE102009037993A1 (de) 2011-03-03

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