EP1155240B1 - Pompe médicale à engrenages - Google Patents

Pompe médicale à engrenages Download PDF

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Publication number
EP1155240B1
EP1155240B1 EP00991181A EP00991181A EP1155240B1 EP 1155240 B1 EP1155240 B1 EP 1155240B1 EP 00991181 A EP00991181 A EP 00991181A EP 00991181 A EP00991181 A EP 00991181A EP 1155240 B1 EP1155240 B1 EP 1155240B1
Authority
EP
European Patent Office
Prior art keywords
pump
gear
pin
pump housing
gears
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
EP00991181A
Other languages
German (de)
English (en)
Other versions
EP1155240A1 (fr
Inventor
Axel Rost
Rudolf Henes
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.)
Storz Endoskop GmbH
Original Assignee
Storz Endoskop 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 Storz Endoskop GmbH filed Critical Storz Endoskop GmbH
Publication of EP1155240A1 publication Critical patent/EP1155240A1/fr
Application granted granted Critical
Publication of EP1155240B1 publication Critical patent/EP1155240B1/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
    • F04C2/12—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
    • F04C2/18—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 with similar tooth forms
    • 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
    • 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
    • F04C2/12—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
    • F04C2/16—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 with helical teeth, e.g. chevron-shaped, screw type

Definitions

  • the invention relates to a medical gear pump for sucking and rinsing, with a pump body that is a pot-like Pump housing having two cylindrical openings, in where two meshing gears are included, namely a driving gear and a revolving gear, the driving gear journal bearing free in the corresponding opening is received, wherein the openings on the one hand with an inlet and on the other hand connected to an outlet, and with a lid for closing the pot-like pump housing.
  • Such a medical gear pump is known from DE 197 25 462 A1.
  • the assembly of pump housing, cover and the included therein meshing gears forms a compact pump body, the via a bayonet connection with a drive body is connectable, in such a way that then of the driving Gear protruding coupling pin in a corresponding Clutch slot of the drive body engages.
  • the pump body unlocked from the drive body via the bayonet connection, the lid of the pump housing removed, so that then the two Gears pulled out of the openings of the pump body can be.
  • the two gears can pushed back, put the lid on and so mounted Pump body be placed back on the drive body.
  • the coupling pin with a relatively large diameter be provided, but what a relatively high wear on the shaft seal due to an increased peripheral speed pulls.
  • the coupling pin is indeed from the pump body before, he must therefore have a shaft seal through the ground be passed through the pump body.
  • gear pump is intended for multiple or continuous use, So have optimal material pairings between the Housing and the therein rotating gears are provided, and correspondingly hard materials with a very good Lubricity.
  • two meshing gears are accommodated, namely a driving gear and a revolving gear.
  • the follower gear is received on a pin.
  • the driving gear including the Coupling pin on which this sits, via a spring in axial Direction with a force to apply.
  • the object is achieved in that of a Floor of the pump housing protrudes a pin, on which the revolving Gear is pushed, and that the pin is conical zerjüngt.
  • This measure has the advantage that through the guide pin the follower gear through the pin so far out is that, except in the context of provided tolerances, the revolving Gear from the driving gear not in excess of the Inner wall of the pump housing is pressed.
  • One conical pin has manufacturing technology the advantage much easier from an injection mold as a cylindrical pin to be peelable, and the taper also ensures easy centering of the gear in the Assembly and operation.
  • the pump body can via the bayonet connection Turned off the drive body and discarded, and for the next use of the pump, a new pump body be put on.
  • the pin is on cast the bottom of the pump housing.
  • This measure has the advantage that the bearing pin at the same time the manufacture of the pump housing with molded or molded becomes, so that a particularly simple and cost-effective Making the pump housing is possible.
  • Both the driving and the follower gear can be formed as a simple injection molded parts, which are then in a also designed as an injection molded pump housing and be closed over the lid. These parts can technically be made inexpensively and inexpensively be so that a pump body for single use available stands, or even with relatively idle drive power ensures a safe and sufficient pumping power.
  • a pump body shown in Figs. 1 and 2 is in its Entity provided with the reference numeral 10.
  • the pump body 10 has a pot-like pump housing 12, the bottom side over an integrally connected ground 14 is closed.
  • the pump housing is as a plastic injection part formed, for example. From the material PC Macrolon, such it is offered by Bayer, Germany.
  • the cup-shaped pump housing 12 via a lid 16 are closed.
  • One around the lid 16 circumferentially circumferential seal 17 ensures a tight seal the interior of the pump housing 12th
  • the openings 18 and 20 are on the one hand with an inlet port 22 in connection, which projects laterally from the pump housing 12.
  • the openings 18 and 20 with an outlet 24 connected, which also protrudes laterally and extends at the same height and parallel to the inlet pipe 22.
  • the coupling pin 32 extends through an opening 34 in the lid 16 through and stands from this.
  • a seal 36 surrounds the coupling pin 32, so that a tight seal to the inside the pump housing is guaranteed.
  • the gear 30 is thus the driving gear.
  • a pin 40th before which is slightly conical and directly to the ground 14 is molded, so even in the production of the pump housing 12 is poured with.
  • Both gears 30 and 42 are each with a helical toothing 44 and 46 provide and mesh with each other, as it is in itself from the aforementioned DE 197 25 462 A1 is known, so that insofar as this application is referred to directly.
  • the gear 42 is thus the follower gear.
  • the pump housing 12 is on its outside in the region of Cover 16 provided with a bayonet guide 48.
  • the coupling pin 32 of the driving gear 30 can directly be molded onto this gear 30 and either from a metallic material or consist of the plastic material, from which the driven gear 30 is made.
  • the outer end of the coupling pin 32 is a slot pin trained and is therefore not closer from one here shown slot coupling of the drive body of the pump when closing the bayonet connection, like that also from the aforementioned DE 197 25 462 A1 is known.
  • the pump body 10 may be in itself known drive body are placed. In doing so, the Clutch without further action.
  • the pump body 10 may be formed as a disposable part, that is, after a single use, it does not need to be disassembled and be cleaned, but can be thrown away. It is but also possible, if you choose appropriate durable materials to disassemble the pump body 10, to clean the items and to sterilize and return to one in the figures assembled pump body 10.

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)

Claims (2)

  1. Pompe médicale à engrenages destinée à aspirer et rincer, comportant un corps de pompe (10), qui comporte un carter (12) en forme de cuve avec deux ouvertures (18, 20) cylindriques, dans lesquelles sont logées deux roues dentées (30, 42) engrenant, à savoir une roue dentée motrice (30) et une roue dentée entraínée (42), la roue dentée motrice (30) étant logée sans coussinet de tourillon dans l'ouverture (18) correspondante, les ouvertures (18, 20) communiquant, d'une part, avec une entrée (26) et, d'autre part, avec une sortie (28), et comportant un couvercle (16) destiné à fermer le carter (12) en forme de cuve de la pompe, caractérisée en ce qu'un tourillon (40), sur lequel est montée la roue dentée entraínée (42), s'avance en saillie sur un fond (14) du carter (12) de la pompe, et en ce que le tourillon (40) se rétrécit en forme de cône.
  2. Pompe médicale à engrenages selon la revendication 1, caractérisée en ce que le tourillon (14) fait corps avec le fond (14).
EP00991181A 1999-12-23 2000-12-13 Pompe médicale à engrenages Expired - Lifetime EP1155240B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19962498 1999-12-23
DE19962498A DE19962498A1 (de) 1999-12-23 1999-12-23 Pumpenkörper für eine medizinische Zahnradpumpe
PCT/EP2000/012633 WO2001048382A1 (fr) 1999-12-23 2000-12-13 Corps de pompe pour pompe medicale a engrenages

Publications (2)

Publication Number Publication Date
EP1155240A1 EP1155240A1 (fr) 2001-11-21
EP1155240B1 true EP1155240B1 (fr) 2005-11-30

Family

ID=7934155

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00991181A Expired - Lifetime EP1155240B1 (fr) 1999-12-23 2000-12-13 Pompe médicale à engrenages

Country Status (4)

Country Link
US (1) US6537048B2 (fr)
EP (1) EP1155240B1 (fr)
DE (2) DE19962498A1 (fr)
WO (1) WO2001048382A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009051443A1 (de) 2009-10-30 2011-05-05 Storz Endoskop Produktions Gmbh Medizinische Zahnradpumpe

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19962498A1 (de) 1999-12-23 2001-07-05 Storz Endoskop Gmbh Schaffhaus Pumpenkörper für eine medizinische Zahnradpumpe
US6726065B2 (en) * 2002-02-04 2004-04-27 Brian C. Sanders Modular automatic colorant dispenser
DE102005042040B3 (de) * 2005-09-02 2007-05-16 Fresenius Medical Care De Gmbh Zahnradpumpe
WO2007093592A1 (fr) * 2006-02-15 2007-08-23 Continental Automotive Gmbh Pompe rotative et procédé de fabrication d'un BOITIER de pompe rotative
US20120258006A1 (en) * 2011-04-11 2012-10-11 Viking Pump, Inc. External Gear Pump for Hot Cooking Oil
US20120269668A1 (en) * 2011-04-19 2012-10-25 Viking Pump, Inc. Polymeric External Gear Pump for Hot Cooking Oil
JP5830435B2 (ja) * 2012-06-06 2015-12-09 日立アプライアンス株式会社 ギヤポンプ及びこれを備えた冷蔵庫
DE102021133396A1 (de) * 2021-12-16 2023-06-22 B.Braun Avitum Ag Verfahren zum Herstellen einer Pumpe

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE460962C (de) * 1928-06-08 Fried Krupp Akt Ges Gussstahlf Zahnradpumpe
US2869473A (en) * 1954-03-15 1959-01-20 American Viscose Corp Metering pump
US3105446A (en) * 1961-09-05 1963-10-01 Sr Oscar C Blomgren Gear pump assembly
FR1308375A (fr) * 1961-12-20 1962-11-03 Licentia Gmbh Pompe à engrenages
US4111614A (en) * 1977-01-24 1978-09-05 Micropump Corporation Magnetically coupled gear pump construction
DE8315309U1 (de) * 1983-05-25 1984-10-31 Robert Bosch Gmbh, 7000 Stuttgart Zahnradpumpe
DE19627405B4 (de) 1996-07-06 2004-10-21 Zf Friedrichshafen Ag Pumpenanordnung
DE19725462A1 (de) * 1997-06-16 1998-12-24 Storz Endoskop Gmbh Medizinische Zahnradpumpe zum Saugen und Spülen
DE19962498A1 (de) 1999-12-23 2001-07-05 Storz Endoskop Gmbh Schaffhaus Pumpenkörper für eine medizinische Zahnradpumpe

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009051443A1 (de) 2009-10-30 2011-05-05 Storz Endoskop Produktions Gmbh Medizinische Zahnradpumpe

Also Published As

Publication number Publication date
WO2001048382A1 (fr) 2001-07-05
US6537048B2 (en) 2003-03-25
DE19962498A1 (de) 2001-07-05
DE50011753D1 (de) 2006-01-05
EP1155240A1 (fr) 2001-11-21
US20020021979A1 (en) 2002-02-21

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