EP0833056B1 - Procédé pour le positionnement d'arbre et pompe à engrenages - Google Patents

Procédé pour le positionnement d'arbre et pompe à engrenages Download PDF

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Publication number
EP0833056B1
EP0833056B1 EP19970122713 EP97122713A EP0833056B1 EP 0833056 B1 EP0833056 B1 EP 0833056B1 EP 19970122713 EP19970122713 EP 19970122713 EP 97122713 A EP97122713 A EP 97122713A EP 0833056 B1 EP0833056 B1 EP 0833056B1
Authority
EP
European Patent Office
Prior art keywords
gears
gear
housing
inlet
pump
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 - Lifetime
Application number
EP19970122713
Other languages
German (de)
English (en)
Other versions
EP0833056A3 (fr
EP0833056A2 (fr
Inventor
Peter Blume
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
Maag Pump Systems Textron 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
Application filed by Maag Pump Systems AG, Maag Pump Systems Textron AG filed Critical Maag Pump Systems AG
Priority to DE59711969T priority Critical patent/DE59711969D1/de
Priority to EP19970122713 priority patent/EP0833056B1/fr
Publication of EP0833056A2 publication Critical patent/EP0833056A2/fr
Publication of EP0833056A3 publication Critical patent/EP0833056A3/fr
Application granted granted Critical
Publication of EP0833056B1 publication Critical patent/EP0833056B1/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
    • F04C2/082—Details specially related to intermeshing engagement type machines or pumps
    • F04C2/086—Carter
    • 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
    • F04C2/082—Details specially related to intermeshing engagement type machines or pumps
    • F04C2/084—Toothed wheels

Definitions

  • the present invention relates to a method according to The preamble of claim 1, a gear pump according to the preamble of claim 3 and a Manufacturing process according to the preamble of Patent claim 7.
  • Gear pumps of the simplest type consist of a pair equally large, interlocking gears that enclosed on all sides by a housing.
  • the Gears sit on two shafts mounted in the housing, of which - again in the simplest construction - one as Drive shaft out through a shaft seal to the outside is.
  • the housing has both sides of the Gearing engagement per one opening for entry and exit of the conveyed medium.
  • Gear pumps provide proven pressure build-up units high volumetric efficiency. Accordingly large are therefore also on the gears and thus on the forces acting on the gears carrying waves, which in known manner received by corresponding plain bearings Need to become.
  • the plain bearings are from the pumped medium flows through and lubricated. According to storage theory comes it causes the waves in the camp to float when the Operating conditions are chosen correctly, bringing the Bearing load and the bearing capacity are in balance.
  • a known gear pump is for example in the Document EP-0 753 678.
  • gear pumps have the Disadvantage on that these gear pumps of the rheological and thermal limits of the pumped medium are dependent, i.e., that gear pumps due to the Pumped medium must be designed.
  • the present invention is therefore the task based on specifying a method or a gear pump, where the above-mentioned disadvantages do not occur.
  • the invention has the following advantages: Radial positioning of the gears via tooth tips and Inner sides of the housing bores is made is a decoupling of the operating conditions of the Achieved delivery medium properties, at least one any remaining dependency of the Operating conditions of the flow behavior of the pumped medium low. Accordingly, the manufacturing costs for Gear pump according to the invention can be considerably reduced.
  • Fig. 1 shows as parts of a known gear pump Plain bearing GL with a bearing bore LB, in which a shaft W is supported, wherein the shaft W carries a gear Z, the in a second gear (not shown) engages.
  • One Pumped through the gear pump - in the Tooth gaps of gears Z - from an inlet opening (also referred to as the suction side) to the outlet opening (also known as printing page) is promoted, due to the prevailing pressure conditions of the Tooth gap in the storage area according to the in Fig. 1st shown arrow SZ, i. the fluid flows in Slide bearing GL from the gear side ZS to the seal side DS.
  • the fluid, the on the sealing side exits from the plain bearing GL, dissipate and otherwise to use or dispose of.
  • Fig. 2 shows an inventive gear pump, the a housing G, a housing cover D and two Intermeshing gears Z1 and Z2 exists, with at This embodiment, the first gear Z1 on a shaft AW mounted or forms with this a pump component.
  • the shaft AW and thus the gear Z1 are using a motor (not shown) driven.
  • the second gear Z2 through the first driven.
  • the first Z1 and the second gear Z2 each be powered by a separate motor.
  • two Provide shaft bushings of course also be sealed accordingly, with this conventional seals are used.
  • Fig. 3 is a gear pump with such three-part pump housing shown, with the Gears Z1 and Z2 receiving housing G front each is provided with a cover D1 or D2.
  • Fig. 4 shows a partial cross-section according to Sectional plane A-A through that shown in Fig. 2 Gear pump according to the invention.
  • this cross section are Inlet and outlet openings EO and AO for the Conveyed medium FM, the gears Z1 and Z2 with their Tooth heads ZK and partially the housing G of Gear pump according to the invention can be seen.
  • the radial positioning of the gears Z1 takes place and Z2 via their tooth tips ZK and the housing G.
  • Due the force distribution in steady state operation of the Gear pump is mainly in load ranges LB a adequate lubrication is required because in these Load ranges LB corresponding forces from the housing G must be included.
  • an entrance and a Outlet bore for the pumped medium FM are provided, which is substantially perpendicular to the longitudinal axes of Gears Z1 and Z2 are stationary.
  • Conceivable and also advantageous opposite to the above variant is a Embodiment in which two or more entrance and / or Outlet openings are provided for the pumped medium FM, because in such an embodiment, the Possibility that the tooth heads ZK also in the field of Can support the inlet and outlet openings.
  • These Embodiment has the particular advantage that the edges of the inlet opening are relieved.
  • the Conveying medium with respect to the toothed wheels at the front side or dissipated is basically the Possibility that the tooth heads are stored the same way on all sides can be.
  • the inlet and / or the outlet opening or the associated inlet and outlet bore Run substantially in this embodiment parallel to the gear axes.
  • FIGs. 5A and 5B is a detail of a gear 5A
  • a Fig. 5A is a known - provided that slide bearings are provided for the shafts - and FIG. 5B shows an embodiment according to the invention in a section perpendicular to the gear center axis MA show.
  • slide bearings are added used to hold the gears in their position. In the case of the gear pumps according to the invention, this takes place Positioning as mentioned in that the tooth heads ZK slide on the inside of the housing bore.
  • Coating Since durable materials are expensive, will proposed, instead of a massive construction, the strong claimed parts with a protective layer of the To coat resistant material (so-called Coating).

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 (7)

  1. Procédé pour le positionnement de roues dentées dans une pompe à engrenages comprenant un boítier de pompe (G; D; D1, D2) avec au moins deux alésages destinés à recevoir au moins deux roues dentées (Z1, Z2) présentant des dents (ZK) qui s'engrènent et comprenant une ouverture d'entrée (EO) et une ouverture de sortie (AO) pur le milieu à refouler (FM), le positionnement radial des roues dentées (Z1, Z2) étant effectué via les dents (ZK) et la surface intérieure des alésages dans ledit boítier de pompe (G; D; D1, D2), caractérisé en ce que les roues dentées (Z1, Z2) en vue d'un positionnement radial ultérieur sont supportées dans la zone de l'ouverture d'entrée (EO) et de l'ouverture de sortie (AO) par le fait qu'ils sont prévues deux ou plusieurs ouvertures d'entrée (EO) et/ou ouvertures de sortie (AO) pour le milieu à refouler (FM).
  2. Procédé selon la revendication 1, caractérisé en ce que le positionnement axial est effectué via au moins un couvercle de boítier (D; D1, D2).
  3. Pompe à engrenages pour le refoulement d'un milieu liquide (FM), ladite pompe présentant un boítier de pompe (G; D; D1, D2) avec au moins deux alésages dans lesquels sont logées des roues dentées qui s'engrènent (Z1, Z2) avec des dents (ZK) et comprenant une ouverture d'entrée (EO) et une ouverture de sortie (AO) pour le milieu à refouler (FM), lesdites roues dentées (Z1, Z2) étant supportées radialement dans le boítier (G), les surfaces de support étant formées d'un côté par des sections de dents (ZK) et de l'autre côté par des sections des surfaces intérieures des alésages dans le boítier de pompe (G; D; D1, D2), caractérisée en ce que l'ouverture d'entrée (EO) et l'ouverture de sortie (AO) sont subdivisées pur garantir un support des roues dentées (Z1, Z2) également dans la zone de l'ouverture d'entrée (EO) et de l'ouverture de sortie (AO).
  4. Pompe à engrenages selon la revendications 3, caractérisée en ce que les roues dentées (Z1, Z2) sont supportées axialement dans le boítier de pompe (G; D; D1, D2), les surfaces de support d'un côté étant formées par des sections du boítier de pompe (G; D; D1, D2), d'au moins un couvercle du boítier (D; D1, D2) et de l'autre côté par des sections des faces frontales des roues dentées (Z1, Z2).
  5. Pompe à engrenages, selon l'une des revendications 3 à 4, caractérisée en ce que les surfaces de support sur les dents (ZK) et/ou sur le boítier de pompe (G; D; D1, D2) sont formées d'un matériau extrêmement résistant, les zones soumises à des efforts forts étant de préférence recouvertes d'une couche d'un tel matériau.
  6. Pompe à engrenages selon l'une des revendications 3 à 5, caractérisée en ce que l'ouverture d'entrée (EO) et/ou l'ouverture de sortie (AO) sont prévues du côté frontal par rapport aux roues dentées (Z1, Z2).
  7. Procédé de fabrication d'une pompe à engrenages comprenant un boítier de pompe (G; D; D1, D2) avec au moins deux alésages destinés à recevoir au moins deux roues dentées (Z1, Z2) présentant des dents (ZK) qui s'engrènent et comprenant une ouverture d'entrée (EO) et une ouverture de sortie (AO) pour le milieu à refouler (FM), le positionnement radial des roues dentées (Z1, Z2) étant effectué via les dents (ZK) et la surface intérieure des alésages dans le boítier de la pompe (G; D; D1, D2), caractérisé en ce que les roues dentées (Z1, Z2) en vue d'un positionnement radial ultérieur sont supportées dans la zone de l'ouverture d'entrée (EO) et de l'ouverture de sortie (AO) par la prévision de deux ou plusieurs ouvertures d'entrée (EO) et/ou ouvertures de sortie (AO) pour le milieu à refouler (FM).
EP19970122713 1997-12-23 1997-12-23 Procédé pour le positionnement d'arbre et pompe à engrenages Expired - Lifetime EP0833056B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE59711969T DE59711969D1 (de) 1997-12-23 1997-12-23 Verfahren zur Wellenpositionierung und eine Zahnradpumpe
EP19970122713 EP0833056B1 (fr) 1997-12-23 1997-12-23 Procédé pour le positionnement d'arbre et pompe à engrenages

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19970122713 EP0833056B1 (fr) 1997-12-23 1997-12-23 Procédé pour le positionnement d'arbre et pompe à engrenages

Publications (3)

Publication Number Publication Date
EP0833056A2 EP0833056A2 (fr) 1998-04-01
EP0833056A3 EP0833056A3 (fr) 1998-07-15
EP0833056B1 true EP0833056B1 (fr) 2004-09-29

Family

ID=8227861

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19970122713 Expired - Lifetime EP0833056B1 (fr) 1997-12-23 1997-12-23 Procédé pour le positionnement d'arbre et pompe à engrenages

Country Status (2)

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EP (1) EP0833056B1 (fr)
DE (1) DE59711969D1 (fr)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE323573C (de) * 1918-04-23 1920-07-31 Fried Krupp Akt Ges Zahnradpumpe fuer hohe Drehzahlen
US2626570A (en) * 1947-06-13 1953-01-27 Euclid Road Machinery Co Floating gear pump
US3286643A (en) * 1963-10-14 1966-11-22 Dowty Technical Dev Ltd Gear pumps and motors
FR2163935A5 (fr) * 1971-12-07 1973-07-27 Rhone Poulenc Sa
US4386893A (en) * 1981-05-04 1983-06-07 Deere & Company Gear pump or motor with a shaftless gear
DE3312868C2 (de) * 1983-04-09 1986-03-20 Glyco-Antriebstechnik Gmbh, 6200 Wiesbaden Hydropumpe
EP0753678B1 (fr) 1996-07-17 2003-04-23 Maag Pump Systems Textron AG Palier à contact lisse pour un arbre

Also Published As

Publication number Publication date
EP0833056A3 (fr) 1998-07-15
DE59711969D1 (de) 2004-11-04
EP0833056A2 (fr) 1998-04-01

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