EP0866225A1 - Pompe à engrenages internes avec de segments d'étanchéité inserés dans les têtes des dents - Google Patents

Pompe à engrenages internes avec de segments d'étanchéité inserés dans les têtes des dents Download PDF

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Publication number
EP0866225A1
EP0866225A1 EP98101501A EP98101501A EP0866225A1 EP 0866225 A1 EP0866225 A1 EP 0866225A1 EP 98101501 A EP98101501 A EP 98101501A EP 98101501 A EP98101501 A EP 98101501A EP 0866225 A1 EP0866225 A1 EP 0866225A1
Authority
EP
European Patent Office
Prior art keywords
ring gear
pinion
sealing element
groove
toothing
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
EP98101501A
Other languages
German (de)
English (en)
Other versions
EP0866225B1 (fr
Inventor
Franz Arbogast
Peter Peiz
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.)
Voith Turbo GmbH and Co KG
Original Assignee
Voith Turbo GmbH and Co KG
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 Voith Turbo GmbH and Co KG filed Critical Voith Turbo GmbH and Co KG
Publication of EP0866225A1 publication Critical patent/EP0866225A1/fr
Application granted granted Critical
Publication of EP0866225B1 publication Critical patent/EP0866225B1/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
    • 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
    • F04C2/102—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 the two members rotating simultaneously around their respective axes

Definitions

  • the present invention relates to a sickle-free internal gear pump for Generation of high pressure according to the preamble of the claim.
  • a pump of this generic type is from DE 41 40 293 C2 known.
  • Internal gear pumps generally have an internal gear with which an externally toothed pinion meshes with a smaller number of teeth, i.e. is drivingly engaged.
  • the teeth of such pumps - based on the diameter of the pinion or the ring gear - relatively narrow, so that after the volume flow to be pumped through the height of the teeth and the width of the toothing is determined, this volume flow at the common pumps is limited for design reasons.
  • Sickle Internal gear pumps have the particular advantage of minimal Construction volume.
  • the profile groove also the The task is to limit the radial movement of the sealing element.
  • the profilnut has the function of a radial end stop.
  • the present invention is based on the problem, a sickle-free internal gear pump of the generic type to specify at the aforementioned problem does not exist.
  • the essence of the present invention lies in the sealing element and / or to design the profile groove so that along the contact surfaces between Sealing element and profile groove (at least) effecting pressure equalization (Control) groove is incorporated.
  • FIG. 1 shows a sickle-free, head-sealing and cross-section backlash, each with a flank sealing internal gear pump, and in the area of a housing part 1, which - viewed in the axial direction - Connect further housing parts.
  • a fixed on a drive shaft 4 externally toothed pinion 5 meshes with an internally toothed ring gear 6 and thus forms a toothing 12.
  • the pinion 5 and the ring gear 6 are not coaxially but eccentrically; also has the pinion 5 one tooth less than the pinion 6, so that the outside of each Toothed head 14 comes into contact with the ring gear 6.
  • a Suction port 7 in the zone where the rotation in the direction of arrow X Teeth on pinion 5 or ring gear 6 are out of engagement.
  • a pressure port 10 is also located starting from a ring gear 6 extending over a circumferential region extending pressure pocket 11, on the opposite side of the pump. The inflow from the pressure medium to the interior of the pump, i.e. to the Tooth gaps in the pinion 5 and in the ring gear 6, which promote the Cause pressure medium takes place via radial openings 17 in the ring gear 6. These openings 17 start from the outer surface 20 of the ring gear 6 and flow into its tooth base.
  • FIGS. 2 to 5 show "Z" according to FIG. 1, corresponding to detail a sealing element 30 inserted into a profile groove 34 of the pinion is shown, once - analogously to FIG. 1 - in supervision and once in a side view, arrows II, III, IV and V clarify how the side view is see is.
  • Fig. 2 shows a first embodiment, according to - in the direction of rotation X of the pinion 5 viewed - in the trailing side surface of the sealing element 30 a groove 52 is incorporated. As can be seen from the side view, is this groove 52 at both ends towards the head of the sealing element 30 pulled up.
  • Fig. 3 shows a second embodiment according to - in the direction of rotation X considered - a groove 53 on the trailing side surface of the profile groove 34 is incorporated. From the side view it can be seen that the Groove 53 at both ends to the head of the radial groove 34 or the tooth head on Pinion is pulled up.
  • Fig. 4 shows a third embodiment according to - in the direction of rotation X considered - a groove 54 on the leading side surface of the sealing element 30 is incorporated.
  • Fig. 5 shows a fourth embodiment, according to the lagging Side surface of the radial groove 34, a groove 55 is incorporated.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
EP98101501A 1997-03-22 1998-01-29 Pompe à engrenages internes avec de segments d'étanchéité inserés dans les têtes des dents Expired - Lifetime EP0866225B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19712169A DE19712169C1 (de) 1997-03-22 1997-03-22 Sichellose Innenzahnradpumpe mit in den Zahnköpfen eingesetzten Dichtelementen
DE19712169 1997-03-22

Publications (2)

Publication Number Publication Date
EP0866225A1 true EP0866225A1 (fr) 1998-09-23
EP0866225B1 EP0866225B1 (fr) 2001-07-04

Family

ID=7824358

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98101501A Expired - Lifetime EP0866225B1 (fr) 1997-03-22 1998-01-29 Pompe à engrenages internes avec de segments d'étanchéité inserés dans les têtes des dents

Country Status (7)

Country Link
US (1) US6093006A (fr)
EP (1) EP0866225B1 (fr)
JP (1) JPH10266974A (fr)
DE (2) DE19712169C1 (fr)
DK (1) DK0866225T3 (fr)
ES (1) ES2159160T3 (fr)
TW (1) TW411984U (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103573617A (zh) * 2012-07-24 2014-02-12 株式会社爱德克斯 齿轮泵装置

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19804134A1 (de) * 1998-02-03 1999-08-12 Voith Turbo Kg Sichellose Innenzahnradpumpe
CN101984257B (zh) * 2010-10-30 2012-03-28 辽宁工程技术大学 平衡式内啮合齿轮泵
US10207535B2 (en) * 2013-11-08 2019-02-19 Sanford, L.P. Self-cleaning gear assembly for pencil sharpeners

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3171587A (en) * 1961-01-21 1965-03-02 Nsu Motorenwerke Ag Sealing structures
US3238929A (en) * 1962-07-24 1966-03-08 Daimler Benz Ag Engine seal
EP0545424A1 (fr) * 1991-12-06 1993-06-09 J.M. Voith GmbH Pompe à engrenages internes avec joint d'étanchéité incorporé dans les dents

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US60366A (en) * 1866-12-11 moekis
DE3633330A1 (de) * 1986-10-01 1988-04-07 Pierburg Gmbh Drehkolbenmaschine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3171587A (en) * 1961-01-21 1965-03-02 Nsu Motorenwerke Ag Sealing structures
US3238929A (en) * 1962-07-24 1966-03-08 Daimler Benz Ag Engine seal
EP0545424A1 (fr) * 1991-12-06 1993-06-09 J.M. Voith GmbH Pompe à engrenages internes avec joint d'étanchéité incorporé dans les dents
DE4140293A1 (de) 1991-12-06 1993-06-09 J.M. Voith Gmbh, 7920 Heidenheim, De Sichellose innenzahnradpumpe mit in die zahnkoepfe eingesetzten dichtelementen

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103573617A (zh) * 2012-07-24 2014-02-12 株式会社爱德克斯 齿轮泵装置
CN103573617B (zh) * 2012-07-24 2016-12-07 株式会社爱德克斯 齿轮泵装置

Also Published As

Publication number Publication date
TW411984U (en) 2000-11-11
US6093006A (en) 2000-07-25
DE59800951D1 (de) 2001-08-09
ES2159160T3 (es) 2001-09-16
EP0866225B1 (fr) 2001-07-04
DK0866225T3 (da) 2001-10-15
DE19712169C1 (de) 1998-03-12
JPH10266974A (ja) 1998-10-06

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