EP1370771A1 - Pompe a engrenages a centrage automatique - Google Patents

Pompe a engrenages a centrage automatique

Info

Publication number
EP1370771A1
EP1370771A1 EP02724189A EP02724189A EP1370771A1 EP 1370771 A1 EP1370771 A1 EP 1370771A1 EP 02724189 A EP02724189 A EP 02724189A EP 02724189 A EP02724189 A EP 02724189A EP 1370771 A1 EP1370771 A1 EP 1370771A1
Authority
EP
European Patent Office
Prior art keywords
gear
drive shaft
drive
drive gear
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.)
Withdrawn
Application number
EP02724189A
Other languages
German (de)
English (en)
Inventor
Dieter Brox
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.)
Buchrucker Karl
Original Assignee
Buchrucker Karl
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 Buchrucker Karl filed Critical Buchrucker Karl
Publication of EP1370771A1 publication Critical patent/EP1370771A1/fr
Withdrawn legal-status Critical Current

Links

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
    • F04C2/103—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 one member having simultaneously a rotational movement about its own axis and an orbital movement

Definitions

  • the invention relates to a self-centering gear pump, in particular for conveying and metering flowable pastes and liquids, but in a wide variety of temperature ranges during the conveying process, by means of an externally toothed plastic drive gear, which is plugged onto a centrally arranged, smooth motor shaft, without a positive connection, and an internally meshing, eccentrically to the motor shaft Ring gear revolving within a circular housing, which is closed on both sides by the housing side walls, but is slidingly abutting the inner wall on the ring gear and the drive gearwheel with little running play, the side wall facing away from the motor containing an inlet and an outlet opening for the passage of the liquids through the pump.
  • the invention specified in claim 1 is based on the object of designing a self-centering gear pump which can self-priming, flowable pastes and non-lubricating liquids even when used in a wide variety of temperature ranges and metered and metered.
  • the claim 1 of the invention enables a constant functionality with expansion coefficients of the same material, whereby an axial thrust with longitudinal expansion of the drive shaft 3 is not transmitted to the drive gear 4 carried by it.
  • Radial thermal expansion of the drive gear 4 and the floating ring gear 8 is absorbed and compensated for by the existing suction-side clearance 16 within the slot-shaped housing interior. Axially and radially, the rotating toothing elements can slide and position themselves in their optimal position for every temperature range during the work process.
  • the self-centering gear pump consists of a circular housing interior which is designed slightly as an elongated hole between the central axis 17 and 18 and in which a rotatable, centrally mounted smooth drive shaft 3 carries an axially displaceable drive gear 4 made of plastic without a positive connection.
  • a smooth drive shaft 3 rotates in the direction of the arrow about the fixed center point 5
  • the resulting torque is abruptly used by means of a roller freewheel 6 for the non-positive connection between the drive shaft 3 and gear hub 7 within the drive gear 4 and takes it into its rotational movement in accordance with the direction of rotation.
  • the drive gear 4 which is constantly in meshing engagement with the overhung internal gear ring 8, which has one more tooth, makes a circular orbital movement around the fixed center 5, while at the same time making the ring gear inside the wall of the semicircle 10 in the housing inner wall 8 circumferentially slides.
  • the difference in the number of teeth 1 between the drive gear 4 and the ring gear 8 causes a relative movement between the two, as a result of which constantly changing cavities 11 form, which expand on the suction side from zero to the greatest extent and decrease on the pressure side again to zero, which causes the liquid to be conveyed is sucked into the pump interior via the pump inlet 12 and the overflow channel 13 and is displaced again on the pressure side through the overflow channel 14 to the pump outlet 15.
  • Figure 1 shows a sectional view of the front view of a self-centering gear pump.
  • Figure 2 shows a front view of a self-centering gear pump with the housing cover on.
  • FIG. 3 shows a sectional illustration in the course A - A according to FIG. 2 of a self-centering gear pump.
  • the smooth drive shaft 3 By driving the smooth drive shaft 3 in the direction of the arrow around the fixed center point 5, the resulting torque abruptly establishes the non-positive connection between the drive shaft 3 and the gear hub 7 by means of the roller freewheel 6 and the axially attached drive gear 4 and brings the drive gear 4 into a rotational movement.
  • the constant mesh 9 is one more tooth internally toothed ring gear 8 also slidably rotated along the inner-walled semicircle 10 of the housing 1.
  • the difference in the number of teeth 1 between the drive gear 4 and the ring gear 8 generates a relative movement between the two and forms cavities 11 which expand their volume on the suction side from zero to the greatest extent and on the pressure side again to zero, which causes the liquid to be conveyed to pass through the pump inlet 12 and the overflow channel 13 is sucked into the pump interior and is displaced on the pressure side through the overflow channel 14 to the pump outlet 15.

Abstract

L'invention concerne une pompe à engrenages à centrage automatique, destinée en particulier au transport et au dosage de pâtes fluides et de liquides, tout en fonctionnant dans diverses plages de températures lors du processus de transport. Cette pompe se caractérise par une roue dentée motrice montée axialement sur un arbre moteur lisse central, sans liaison de forme, et par une roue creuse excentrée s'engrenant au niveau de sa paroi intérieure et se trouvant en rotation à l'intérieur d'un boîtier cylindrique, lequel est fermé des deux côtés par des parois latérales.
EP02724189A 2001-03-22 2002-03-01 Pompe a engrenages a centrage automatique Withdrawn EP1370771A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10114148A DE10114148C1 (de) 2001-03-22 2001-03-22 Selbstzentrierende Zahnradpumpe
DE10114148 2001-03-22
PCT/EP2002/002253 WO2002077458A1 (fr) 2001-03-22 2002-03-01 Pompe a engrenages a centrage automatique

Publications (1)

Publication Number Publication Date
EP1370771A1 true EP1370771A1 (fr) 2003-12-17

Family

ID=7678638

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02724189A Withdrawn EP1370771A1 (fr) 2001-03-22 2002-03-01 Pompe a engrenages a centrage automatique

Country Status (5)

Country Link
US (1) US20040136856A1 (fr)
EP (1) EP1370771A1 (fr)
CA (1) CA2441596A1 (fr)
DE (1) DE10114148C1 (fr)
WO (1) WO2002077458A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108916628B (zh) * 2018-07-10 2019-12-31 浙江平柴泵业有限公司 一种高效机油泵

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE451437C (de) * 1924-03-14 1927-10-27 Hill Compressor And Pump Co In Seitendichtung fuer Zahnradverdichter oder -pumpen mit exzentrisch ineinanderliegenden Zahnraedern
US1631592A (en) * 1926-09-01 1927-06-07 Hill Compressor & Pump Company Rotary pumping machine
US2434135A (en) * 1942-12-02 1948-01-06 Eaton Mfg Co Gear pump structure
AT174800B (de) * 1952-01-15 1953-05-11 Benno Fiala-Fernbrugg Zahnradpumpe
US3958494A (en) * 1974-09-30 1976-05-25 Moog Inc. Multiple displacement hydraulic motor drive apparatus
DE19651683A1 (de) * 1996-12-12 1998-06-18 Otto Eckerle Füllstücklose Innenzahnradpumpe
DE19710804A1 (de) * 1997-03-17 1998-09-24 Geraete Und Pumpenbau Gmbh Zahnradpumpe zum Fördern von Fluiden
DE29810548U1 (de) * 1998-06-16 1998-12-17 Joma Polytec Gmbh Zahnrad für eine Zahnradpumpe
JP2001132660A (ja) * 1999-11-09 2001-05-18 Mitsubishi Materials Corp 構造部材が小さい相手攻撃性で、すぐれた耐摩耗性を発揮するＡｌ合金製内接ギア型オイルポンプ
JP2001214869A (ja) * 2000-01-31 2001-08-10 Sumitomo Electric Ind Ltd オイルポンプ
DE10262395B4 (de) * 2001-08-09 2016-03-03 Denso Corporation Rotatorische Pumpe mit höherem Abgabedruck und Bremsvorrichtung, die dieselbe aufweist

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO02077458A1 *

Also Published As

Publication number Publication date
US20040136856A1 (en) 2004-07-15
CA2441596A1 (fr) 2002-10-03
DE10114148C1 (de) 2002-06-06
WO2002077458A1 (fr) 2002-10-03

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