EP1249609B1 - Pompe avec axe d'entraînement emboîtable auto-centrable - Google Patents

Pompe avec axe d'entraînement emboîtable auto-centrable Download PDF

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Publication number
EP1249609B1
EP1249609B1 EP20020006304 EP02006304A EP1249609B1 EP 1249609 B1 EP1249609 B1 EP 1249609B1 EP 20020006304 EP20020006304 EP 20020006304 EP 02006304 A EP02006304 A EP 02006304A EP 1249609 B1 EP1249609 B1 EP 1249609B1
Authority
EP
European Patent Office
Prior art keywords
shaft
pump
ring
self
housing
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 - Fee Related
Application number
EP20020006304
Other languages
German (de)
English (en)
Other versions
EP1249609A1 (fr
Inventor
Joachim Schreiber
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.)
ixetic Bad Homburg GmbH
Original Assignee
ixetic Bad Homburg 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 ixetic Bad Homburg GmbH filed Critical ixetic Bad Homburg GmbH
Publication of EP1249609A1 publication Critical patent/EP1249609A1/fr
Application granted granted Critical
Publication of EP1249609B1 publication Critical patent/EP1249609B1/fr
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D11/00—Preventing or minimising internal leakage of working-fluid, e.g. between stages
    • F01D11/003—Preventing or minimising internal leakage of working-fluid, e.g. between stages by packing rings; Mechanical seals
    • 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
    • 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
    • F04C2/30—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F04C2/34—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members
    • F04C2/344—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
    • 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
    • F04C2230/603—Centering; Aligning
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2300/00—Materials; Properties thereof
    • F05D2300/40—Organic materials
    • F05D2300/43—Synthetic polymers, e.g. plastics; Rubber
    • F05D2300/432—PTFE [PolyTetraFluorEthylene]

Definitions

  • the present invention relates to a pump having a rotor disposed in a pump housing rotatably driven by a drive shaft and rotatably attached to the drive shaft, wherein between the housing and the surface of the shaft acts a sealing ring, on the one hand against the surface of the shaft and on the other hand supported against the pump housing and thus pressed against the surface of the shaft,
  • Pumps of the type in question are designed, for example, as vane or gear pumps and serve to convey a fluid medium, namely gaseous or liquid substances.
  • the delivery unit of the pump comprises a rotor, which in turn is driven by a pump shaft.
  • the pump shaft is rotatably supported within the pump housing by means of bearings.
  • the pump shaft will always be referred to below as the drive shaft.
  • Pumps of the generic type are u.a. used for diesel in motor vehicles.
  • From the DE 198 27 922 A is a generic type pump known.
  • This pump comprises a pump housing and a rotor disposed in the pump housing, which is rotatably driven via a drive shaft and rotatably on the shaft can be plugged. Between the housing and the surface of the shaft acts a sealing ring, which is supported on the one hand against the surface of the shaft and on the other hand against the pump housing and thus pressed against the surface of the shaft.
  • a similar pump is also from the DE 197 17 295 A known.
  • the radial shaft seal provided there, however, is inadequate particularly in the course of temperature, in particular at low temperatures.
  • the present invention is therefore the object of a pump of the generic type to design and further develop that with simple means a sufficiently good radial shaft seal is created. Even at very low temperatures and with increased wave shock, the sealing effect should be sufficient.
  • a generic type pump of the type mentioned is characterized in that the sealing ring comprises an annular body with a circumferential groove and that in the circumferential groove an O-ring is inserted, that the annular body made of PTFE (Teflon) and that the sealing ring is an arcuate Includes sealing lip, which presses against the surface of the shaft.
  • PTFE Teflon
  • the radial shaft sealing ring made of PTFE ensures a good sealing effect even at low temperatures and high waves.
  • PTFE Teflon, registered trademark
  • the radial shaft sealing ring made of PTFE ensures a good sealing effect even at low temperatures and high waves.
  • the use of PTFE is cheaper than the otherwise known in Vitans fuels such as diesel or biodiesel (Rapsölmethylesther, RME) used Vitan.
  • the PTFE shaft seal in the use of poorly lubricious or aggressive media, such as plastic, an advantage.
  • a static seal and for attachment can serve an additional O-ring.
  • the single FIGURE shows a schematic view of an embodiment of a shaft seal according to the invention 22.
  • the shaft seal consists of a ring 22 made of PTFE (Teflon, registered trademark) and has a circumferential groove 26 in which an O-ring 21 is arranged.
  • the shaft sealing ring presses against the surface 27 of the shaft 3 with an arcuate sealing lip 28.
  • the shaft sealing ring is supported against the housing 20 and additionally produces a good static seal through the O-ring 21.
  • the O-ring 21 is due to its bias and resilient contact force in addition to the attachment of the shaft seal.
  • the media page 23 e.g. containing fuel, against the ambient side 24, e.g. against the atmosphere, sealed.
  • Vitan registered trademark
  • a costly chrome plating of the shaft is unnecessary in the starting region of the sealing lip 28, as it is otherwise necessary for some pumps.
  • this seal is resistant to the overpressure that occurs when using a hand pump.
  • the sealing lip 28 can be reinforced by a spring, which is proven especially in tumbling waves.

Landscapes

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

Claims (1)

  1. Pompe comportant un rotor (2) qui est disposé dans un carter de pompe (1), ledit rotor étant entraîné en rotation par l'intermédiaire d'un arbre d'entraînement (3) et relevable à cet effet sur l'arbre d'entraînement (3) de manière résistant à la rotation, une bague d'étanchéité (22) agissant entre le carter (1) et la surface (27) de l'arbre (3) s'appuyant d'une part contre la surface (27) de l'arbre (3) et d'autre part contre le carter de pompe (1) et se pressant ainsi contre la surface (27) de l'arbre (3),
    caractérisée en ce que la bague d'étanchéité (22) comprend un corps annulaire avec une rainure circulaire (26) et en ce qu'un joint torique (21) est inséré dans la rainure circulaire (26), en ce que le corps annulaire (22) est réalisé en PTFE (Téflon) et en ce que la bague d'étanchéité (22) comprend une lèvre d'étanchéité (28) arquée qui se presse contre la surface (27) de l'arbre (3).
EP20020006304 2001-04-12 2002-03-20 Pompe avec axe d'entraînement emboîtable auto-centrable Expired - Fee Related EP1249609B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10118720 2001-04-12
DE2001118720 DE10118720A1 (de) 2001-04-12 2001-04-12 Pumpe

Publications (2)

Publication Number Publication Date
EP1249609A1 EP1249609A1 (fr) 2002-10-16
EP1249609B1 true EP1249609B1 (fr) 2008-04-09

Family

ID=7681678

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20020006304 Expired - Fee Related EP1249609B1 (fr) 2001-04-12 2002-03-20 Pompe avec axe d'entraînement emboîtable auto-centrable

Country Status (2)

Country Link
EP (1) EP1249609B1 (fr)
DE (2) DE10118720A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH704333A2 (de) * 2011-01-13 2012-07-13 Mueller Haustechnik Ag M Drehschieberpumpe zum Pumpen einer Flüssigkeit, insbesondere für ein Wasserklosett mit Unterdusche.
JP6932312B2 (ja) * 2016-11-10 2021-09-08 日本オイルポンプ株式会社 ベーンポンプ

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5478168A (en) * 1977-12-02 1979-06-22 Akitoshi Kitano Vertical displacement type flow meter
US6036453A (en) * 1995-05-09 2000-03-14 Xolox Corporation Pump assembly
JPH1054382A (ja) * 1996-08-14 1998-02-24 Mitsubishi Electric Corp ベーン式真空ポンプ
DE19717295C2 (de) * 1997-04-24 1999-09-23 Danfoss As Fluid-Maschine
JP3656205B2 (ja) * 1997-06-25 2005-06-08 株式会社日立製作所 パワーステアリング装置用油圧ポンプ
DE19857560A1 (de) 1997-12-23 1999-06-24 Luk Fahrzeug Hydraulik Pumpe ohne eigene Lagerung
US6347843B1 (en) * 1998-04-22 2002-02-19 Denso Corporation Pump equipment and method for assembling same
WO2001079700A1 (fr) * 2000-04-18 2001-10-25 Luk Fahrzeug-Hydraulik Gmbh & Co. Kg Pompe
DE20022348U1 (de) * 2000-04-18 2001-09-27 Luk Fahrzeug Hydraulik Pumpe

Also Published As

Publication number Publication date
EP1249609A1 (fr) 2002-10-16
DE50212045D1 (de) 2008-05-21
DE10118720A1 (de) 2002-10-17

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