EP0669465A2 - Dispositif de palier pour pompes pour fluides visqueux - Google Patents

Dispositif de palier pour pompes pour fluides visqueux Download PDF

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Publication number
EP0669465A2
EP0669465A2 EP95107891A EP95107891A EP0669465A2 EP 0669465 A2 EP0669465 A2 EP 0669465A2 EP 95107891 A EP95107891 A EP 95107891A EP 95107891 A EP95107891 A EP 95107891A EP 0669465 A2 EP0669465 A2 EP 0669465A2
Authority
EP
European Patent Office
Prior art keywords
bearing
pump
return
channels
collecting
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.)
Granted
Application number
EP95107891A
Other languages
German (de)
English (en)
Other versions
EP0669465A3 (fr
EP0669465B1 (fr
Inventor
Peter Dipl. Ing. Blume
Roger Dr. Ing. Stehr
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.)
Maag Pump Systems AG
Original Assignee
Maag Pump Systems AG
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
Priority to ES95107891T priority Critical patent/ES2110799T3/es
Priority to EP95107891A priority patent/EP0669465B1/fr
Priority to DE59501083T priority patent/DE59501083D1/de
Priority to AT95107891T priority patent/ATE161075T1/de
Application filed by Maag Pump Systems AG filed Critical Maag Pump Systems AG
Publication of EP0669465A2 publication Critical patent/EP0669465A2/fr
Publication of EP0669465A3 publication Critical patent/EP0669465A3/fr
Priority to JP8535234A priority patent/JPH11505910A/ja
Priority to AU53304/96A priority patent/AU5330496A/en
Priority to US08/952,649 priority patent/US6123531A/en
Priority to PCT/CH1996/000164 priority patent/WO1996037705A1/fr
Application granted granted Critical
Publication of EP0669465B1 publication Critical patent/EP0669465B1/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
    • 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
    • F04C13/00—Adaptations of machines or pumps for special use, e.g. for extremely high pressures
    • F04C13/001—Pumps for particular liquids
    • F04C13/002—Pumps for particular liquids for homogeneous viscous 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
    • F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • F04C15/0088—Lubrication
    • 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
    • F04C2/12—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
    • F04C2/14—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
    • 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
    • F04C2240/50—Bearings
    • F04C2240/56—Bearing bushings or details thereof

Definitions

  • the present invention relates to a bearing arrangement for a pump shaft for conveying Newtonian or non-Newtonian liquids with different viscosities with a bearing for the shaft, a gear pump and a method for collecting and returning leakage liquid passing through a bearing when pumping liquids with different viscosities.
  • a batchwise or batchwise polymerization can be carried out for process engineering reasons.
  • a gear pump can be used for this.
  • very low-viscosity liquid first enters the pump, which means that there is an extremely low pressure difference in the pump.
  • the pump conveys high to medium viscosity melt against downstream pressure consumers, such as filters, extrusion tools and the like. As a result, the pump has to convey against a significantly higher pressure difference.
  • the task is to ensure leakage lubrication when changing over from conveying a highly viscous medium to conveying a low-viscosity medium, i.e. that a heavily impeded flow or even a blockage of the return arrangement for the low-viscosity fluid is prevented.
  • the return duct system of a pump proposed for the conveyance of liquids with different viscosities has at least one catch or relief zone arranged either on the back of each bearing or on both pump covers, for collecting leakage liquid passing through the bearing along the shaft, which is also responsible for lubricating the bearing.
  • the return system has at least two return channels or bores from each of the collecting or relief zones in order to return the collected leakage fluid to the suction side of the pump.
  • At least one of the channels or bores can be closed, which makes it possible, depending on the viscosity of the medium to be pumped, to close one of the bores, or to keep all bores or return channels open. If high-viscosity media are fed, the hole for the low-viscosity medium should be closed; if the low-viscosity medium or product is being conveyed, the hole for the low-viscosity medium should be open. In last In the event, the flow resistance ratio is such that the return hole for the high-viscosity product appears to the low-viscosity product to be closed.
  • the return hole closer to the back of the bearing or the low-pressure side is preferably reserved for the return of the low-viscosity liquid.
  • this closer return hole is opened after the switchover from conveying a highly viscous medium to conveying the low-viscosity medium, which return channel is not "blocked" by highly viscous medium.
  • this closer return channel is opened after switching to polymerization or circulation mode.
  • the polymerization increases the viscosity in the polyester to be circulated, and after reaching a certain viscosity or after reaching a certain differential pressure or after switching back to extrusion operation, the nearer return duct is closed again so that no highly viscous material can enter it.
  • This closer return hole can be closed and opened hydraulically, pneumatically or by electric motor, for example using a stepper motor. Whether the shorter return channel ultimately runs through the slide bearing or through the housing surrounding the slide bearing depends, for example, on the geometric conditions. In any case, both versions are possible.
  • return channels of the same type at least along a common section, i.e. return channels for low-viscosity media can be combined and return channels for high-viscosity media.
  • a bearing of a drive shaft 1 of a gear pump is shown schematically in longitudinal section, running through a housing wall 7.
  • a gear 5 is arranged on the shaft 1 in the pump chamber 3 in order to convey a viscous liquid in the direction of arrow A.
  • the shaft 1 is supported in a slide bearing 9, through which bearing, along the shaft 1, in the intermediate space 10 due to the high pressure in the pump chamber 3, the medium to be pumped is driven.
  • This so-called leakage liquid also serves to lubricate the slide bearing 9.
  • a collecting or annular space 11 is arranged on the back of the slide bearing 9 in order to collect the leakage liquid passing through the slide bearing 9.
  • this collecting or annular space 11 is connected to the suction side of the pump space 3 via two return channels 13 and 15.
  • a valve 17 is also provided, for example.
  • FIG. 2 shows, analogously, in longitudinal section a further embodiment variant of a bearing according to the invention or a return arrangement, the collecting or annular space 11 now being arranged at least partially inside the rear of the sliding bearing 9.
  • the two return channels 13 and 15 are in turn arranged peripherally from this annular space 11, running outwards, with the result that at least the branch 13a or 15a of each return channel, which runs perpendicular to the shaft 1, appears as lying one on top of the other.
  • the two return duct sections 13a and 15a can also be guided independently of one another in this area, or they can be combined. This is because sections 13a and 15a can be very short. In contrast, the return holes 13 and 15, which are comparatively long, must be guided separately.
  • FIG. 3 shows an arrangement similar to that in FIG. 2, but the return duct sections 13a and 15a are guided in the cover 8 of the pump.
  • These return channel sections 13a and 15a can be formed, for example, by a so-called V-groove.
  • This V-groove or V-grooves open into the two, e.g. return bores 13 and 15 lying one behind the other, which is why they do not appear as separately guided bores in the illustration according to FIG. 3.
  • a sealing arrangement 16 is shown in the cover 8 in FIG. 3.
  • FIGS. 1-4 are of course only examples which can be modified, modified or supplemented in any manner. So it is of course possible to arrange further return channels and, in the case of several return channels, also to design more than one return channel to be closable. This can be useful, for example, if the viscosities of the different liquids to be pumped differ greatly.
  • the sealability of the return channels can also be achieved in various ways, but this is know-how which is known per se and cannot be explained in more detail here. It is also in itself immaterial whether the return channels are partially passed through the bearings themselves or through the housing wall. Finally, it should be pointed out that the illustration of the sealing arrangement adjacent to the collecting or annular space has been omitted in the figures, since this is not part of the present invention.
  • the discharge or return system has at least two return channels or bores, on each pump side.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Sliding-Contact Bearings (AREA)
  • Details Of Reciprocating Pumps (AREA)
EP95107891A 1995-05-24 1995-05-24 Dispositif de palier pour pompes pour fluides visqueux Expired - Lifetime EP0669465B1 (fr)

Priority Applications (8)

Application Number Priority Date Filing Date Title
ES95107891T ES2110799T3 (es) 1995-05-24 1995-05-24 Disposicion de cojinete para un eje de una bomba para impeler medios con diferente viscosidad.
EP95107891A EP0669465B1 (fr) 1995-05-24 1995-05-24 Dispositif de palier pour pompes pour fluides visqueux
DE59501083T DE59501083D1 (de) 1995-05-24 1995-05-24 Lageranordnung für eine Pumpenwelle einer Pumpe für das Fördern von Medien mit unterschiedlicher Viskosität
AT95107891T ATE161075T1 (de) 1995-05-24 1995-05-24 Lageranordnung für eine pumpenwelle einer pumpe für das fördern von medien mit unterschiedlicher viskosität
JP8535234A JPH11505910A (ja) 1995-05-24 1996-04-29 粘性の異なる媒体を搬送するためのポンプのポンプ軸用の軸受装置
PCT/CH1996/000164 WO1996037705A1 (fr) 1995-05-24 1996-04-29 Systeme de palier pour l'arbre d'une pompe servant a refouler des substances de differentes viscosites
AU53304/96A AU5330496A (en) 1995-05-24 1996-04-29 Bearing system for the shaft of a pump for conveying media f differing viscosity
US08/952,649 US6123531A (en) 1995-05-24 1996-04-29 Bearing arrangement for a pump shaft of a pump for delivering media of different viscosities

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP95107891A EP0669465B1 (fr) 1995-05-24 1995-05-24 Dispositif de palier pour pompes pour fluides visqueux

Publications (3)

Publication Number Publication Date
EP0669465A2 true EP0669465A2 (fr) 1995-08-30
EP0669465A3 EP0669465A3 (fr) 1995-12-20
EP0669465B1 EP0669465B1 (fr) 1997-12-10

Family

ID=8219282

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95107891A Expired - Lifetime EP0669465B1 (fr) 1995-05-24 1995-05-24 Dispositif de palier pour pompes pour fluides visqueux

Country Status (8)

Country Link
US (1) US6123531A (fr)
EP (1) EP0669465B1 (fr)
JP (1) JPH11505910A (fr)
AT (1) ATE161075T1 (fr)
AU (1) AU5330496A (fr)
DE (1) DE59501083D1 (fr)
ES (1) ES2110799T3 (fr)
WO (1) WO1996037705A1 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19833374A1 (de) * 1998-07-24 2000-01-27 Zahnradfabrik Friedrichshafen Verdrängerpumpe
DE19835122A1 (de) * 1998-08-04 2000-02-10 Zahnradfabrik Friedrichshafen Verdrängerpumpe
WO2002001072A1 (fr) * 2000-06-28 2002-01-03 Coperion Werner & Pfleiderer Gmbh & Co. Kg Pompe a engrenages
EP1855007A1 (fr) * 2006-05-12 2007-11-14 Maag Pump Systems Textron AG Pompe à engrenages
WO2012000812A2 (fr) 2010-07-02 2012-01-05 Oerlikon Textile Gmbh & Co. Kg Pompe à engrenages
WO2018114332A1 (fr) * 2016-12-21 2018-06-28 Robert Bosch Gmbh Pompe à fluide pour un système de récupération de chaleur perdue
EP3183458B1 (fr) 2014-08-18 2018-08-01 GETRAG B.V. & Co. KG Dispositif d'alimentation en fluide pour boîte de vitesses d'un véhicule automobile
EP3964689A1 (fr) * 2020-09-08 2022-03-09 Eaton Intelligent Power Limited Pompe à engrenages dotée de paliers autolubrifiants

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6544008B1 (en) * 1997-07-18 2003-04-08 John K. Apostolides Internal vent for reducing seal pressure in prelubrication pump assembly
US7137789B2 (en) * 1997-07-18 2006-11-21 Rpm Industries, Inc. Vent for reducing seal pressure in pump assembly
DE10014548A1 (de) * 2000-03-23 2001-09-27 Bosch Gmbh Robert Zahnradförderpumpe
US6685453B2 (en) 2001-06-14 2004-02-03 Parker-Hannifin Corporation Fluid transfer machine with drive shaft lubrication and cooling
KR100947715B1 (ko) * 2007-05-07 2010-03-16 나종갑 잉크 이송용 기어 펌프
WO2010035916A1 (fr) * 2008-09-25 2010-04-01 Jong-Gap Na Pompe possédant un trajet de dérivation
US11143183B2 (en) * 2019-03-26 2021-10-12 Hamilton Sundstrand Corporation Gear pump bearing with hybrid pad shutoff
EP3862532A1 (fr) * 2020-02-07 2021-08-11 Fluid-O-Tech S.r.l. Pompe destinée en particulier à pomper un liquide tel que de l'encre, de la peinture, de la colle ou analogue

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE544963C (de) 1932-02-24 Pfeiffer Arthur Wellenabdichtung fuer Vakuumpumpen, insbesondere mit Drehkolben
DE3135037A1 (de) 1980-09-12 1982-09-23 Barmag Barmer Maschinenfabrik Ag, 5630 Remscheid "austragspumpe"

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR572694A (fr) * 1923-11-06 1924-06-11 Perfectionnement aux pompes rotatives
DE442185C (de) * 1925-11-29 1927-03-22 Wolfgang Gaede Dr Einrichtung fuer Vakuum-Drehkolbenpumpen mit OElabschluss zur Verhinderung des OEleintritts in die Vakuumleitung beim Stillstand der Pumpe
GB1554262A (en) * 1975-06-24 1979-10-17 Kayaba Industry Co Ltd Gear pump
GB1572467A (en) * 1977-02-01 1980-07-30 Hamworthy Hydraulics Ltd Gear pumps
JPS5773883A (en) * 1980-10-27 1982-05-08 Katsuya Ishizaki Oil leakage preventing method for rotary pump
US4392798A (en) * 1981-04-03 1983-07-12 General Signal Corporation Gear pump or motor with low pressure bearing lubrication
GB2102074B (en) * 1981-07-18 1985-01-30 Dowty Group Services Positive-displacement fluid-machines
US4737087A (en) * 1984-12-10 1988-04-12 Barmag Ag Drive shaft seal for gear pump and method
GB2169350B (en) * 1985-01-05 1989-06-21 Hepworth Plastics Ltd Gear pumps
DE59303699D1 (de) * 1992-03-06 1996-10-17 Berstorff Gmbh Masch Hermann Einrichtung zur Verarbeitung von hochviskosem Kautschuk oder thermoplastischem Kunststoff
EP0846860A3 (fr) * 1992-10-28 1998-07-01 Maag Pump Systems Textron AG Procédé pour le traitement de fonte thermoplastique avec une pompe à engrenages
US5641281A (en) * 1995-11-20 1997-06-24 Lci Corporation Lubricating means for a gear pump
ATE208461T1 (de) * 1996-02-09 2001-11-15 Maag Pump Systems Ag Zahnradpumpe

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE544963C (de) 1932-02-24 Pfeiffer Arthur Wellenabdichtung fuer Vakuumpumpen, insbesondere mit Drehkolben
DE3135037A1 (de) 1980-09-12 1982-09-23 Barmag Barmer Maschinenfabrik Ag, 5630 Remscheid "austragspumpe"

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19833374A1 (de) * 1998-07-24 2000-01-27 Zahnradfabrik Friedrichshafen Verdrängerpumpe
DE19833374B4 (de) * 1998-07-24 2007-03-22 Zf Friedrichshafen Ag Verdrängerpumpe
DE19835122A1 (de) * 1998-08-04 2000-02-10 Zahnradfabrik Friedrichshafen Verdrängerpumpe
WO2002001072A1 (fr) * 2000-06-28 2002-01-03 Coperion Werner & Pfleiderer Gmbh & Co. Kg Pompe a engrenages
US6761546B2 (en) 2000-06-28 2004-07-13 Coperion Werner & Pfleiderer Gmbh & Co. Kg Gear pump having bearings with cooling ducts
EP1855007A1 (fr) * 2006-05-12 2007-11-14 Maag Pump Systems Textron AG Pompe à engrenages
WO2012000812A2 (fr) 2010-07-02 2012-01-05 Oerlikon Textile Gmbh & Co. Kg Pompe à engrenages
EP3183458B1 (fr) 2014-08-18 2018-08-01 GETRAG B.V. & Co. KG Dispositif d'alimentation en fluide pour boîte de vitesses d'un véhicule automobile
WO2018114332A1 (fr) * 2016-12-21 2018-06-28 Robert Bosch Gmbh Pompe à fluide pour un système de récupération de chaleur perdue
EP3964689A1 (fr) * 2020-09-08 2022-03-09 Eaton Intelligent Power Limited Pompe à engrenages dotée de paliers autolubrifiants
US11703050B2 (en) 2020-09-08 2023-07-18 Eaton Intelligent Power Limited Gear pump with self-lubricating bearings

Also Published As

Publication number Publication date
AU5330496A (en) 1996-12-11
EP0669465A3 (fr) 1995-12-20
WO1996037705A1 (fr) 1996-11-28
EP0669465B1 (fr) 1997-12-10
JPH11505910A (ja) 1999-05-25
ATE161075T1 (de) 1997-12-15
DE59501083D1 (de) 1998-01-22
ES2110799T3 (es) 1998-02-16
US6123531A (en) 2000-09-26

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