EP0684384B1 - Pompe à courroies dentées - Google Patents

Pompe à courroies dentées Download PDF

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Publication number
EP0684384B1
EP0684384B1 EP95103052A EP95103052A EP0684384B1 EP 0684384 B1 EP0684384 B1 EP 0684384B1 EP 95103052 A EP95103052 A EP 95103052A EP 95103052 A EP95103052 A EP 95103052A EP 0684384 B1 EP0684384 B1 EP 0684384B1
Authority
EP
European Patent Office
Prior art keywords
toothed belt
toothed
pump
pulley
engagement region
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
EP95103052A
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German (de)
English (en)
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EP0684384A1 (fr
Inventor
Dieter Brox
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Individual
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Individual
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Publication of EP0684384A1 publication Critical patent/EP0684384A1/fr
Application granted granted Critical
Publication of EP0684384B1 publication Critical patent/EP0684384B1/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
    • F04C5/00—Rotary-piston machines or pumps with the working-chamber walls at least partly resiliently deformable
    • 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
    • F04C2/101—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 with a crescent-shaped filler element, located between the inner and outer intermeshing members

Definitions

  • the invention relates to an internal toothed belt pump, in particular an internal toothed belt pump, which can also deliver and meter non-lubricating liquids in a speed-controlled manner in the medium pressure range.
  • Pumps were originally developed to pump water. The resulting few technical requirements could be met with a small number of designs. Today, a large number of pump types are required to meet the specific requirements of the many areas of application for all types of liquids. Pumps can be divided into two main groups, the group of centrifugal pumps and the group of positive displacement pumps.
  • centrifugal pumps are suitable for pumping a wide variety of liquids, including non-lubricating ones, but are generally not self-priming and are not suitable as speed-controlled pumps over the entire speed range.
  • the displacement pumps primarily gear pumps and screw pumps, like the other known displacement pumps, are sensitive to foreign bodies and unsuitable for non-lubricating liquids without special precautions.
  • a toothed belt pump is known from US Pat. No. 2,745,355, which has a plurality of toothed disks which are in engagement with a toothed belt.
  • the suction and pressure chambers must be separated from each other by separate spacers.
  • DE-C 25 60 128 shows a pump with a conveyor belt which rotates on two pulleys.
  • This toothed belt pump has a different operating principle compared to US-A 2,745,355 in that the working chambers located between the tooth heads change their cross section by changing the curvature of the movement path.
  • DE-C 42 18 148 describes a toothed belt pump with a pulley and two laterally adjacent belt guide rollers, which have an endless toothed belt with outwardly facing teeth inside the pump housing circulate. Due to the arrangement of the toothed belt pulley with the deflection rollers arranged on the side, the rotating toothed belt is subjected to a considerable bending change with counter-bending, which can lead to material fatigue and belt breakage after some operating time.
  • the invention specified in claim 1 is based on the object of designing an internal toothed belt pump which, in the self-priming manner, can also deliver and meter non-lubricating liquids in a speed-controlled manner in the medium pressure range.
  • the internal toothed belt pump consists of a cylindrical housing 1, in which a rotatable, centrally mounted drive shaft 2 carries a toothed pulley 3 with a positive connection.
  • a favorable engagement ratio is achieved, that is, there are always all teeth within the engagement area 27 between the guide rollers 5 and 6 Toothed pulley 3 and toothed belt 4 fully engaged.
  • the pitch circle of the toothed belt 4 is adapted in the engagement area 27 by the guide rollers 5 and 6 to the pitch circle radius 25 around the toothed pulley center 23 of the toothed pulley 3. Also starting from the toothed pulley center 23, the radius 26 of the toothed belt back is identical to the radius of the housing inner wall 7 within the engagement region 27, but with less running play (gap).
  • the toothed belt 4 slides and seals with its tooth heads in a circular orbit around the second center 22 with the second pitch circle radius 24 on the peripheral surface 18 of the crescent-shaped filler piece 8, during which the belt back with a small gap and the same orbit without contact to the housing inner wall 9 treads.
  • the circular orbit ends when it re-enters the engagement area 27 and changes to the toothed disk center 23; a new revolution of the toothed belt 4 begins.
  • a suction space 10 is formed after opening the toothing, which is volumetrically limited by the toothed surfaces of the toothed belt 4, toothed pulley 3 and the sickle-shaped filler 8.
  • a pressure chamber 11 is formed by the surfaces of the toothing of the toothed belt 4, toothed pulley 3 and the sickle-shaped filler 8. Suction and pressure chamber are closed laterally by the pump housing and by the cover 12 of the pump.
  • An overflow channel 14 is incorporated in the inner wall of the cover 12 for the connection between the suction-side pump inlet 13 and the suction chamber 10, and an overflow channel 16 for the connection between the pressure-side pump outlet 15 and the pressure chamber 11.
  • a connecting groove 17 is machined laterally into the surface of the pump housing, as a result of which the pressure on the toothed belt 4 is compensated for.
  • Figure 1 shows a sectional view of the front view of an internal toothed belt pump.
  • FIG. 2 shows a front view of a toothed belt pump with a screwed-on housing cover.
  • FIG. 3 shows an enlarged detail in the area of the tooth engagement of the toothed belt and toothed pulley.
  • FIG. 4 shows a perspective illustration of an assembly drawing with the housing cover screwed on.
  • the toothed disk 3 By driving the drive shaft 2, the toothed disk 3 is set in rotation according to the direction of the arrow via a positive connection.
  • the toothed belt 4, which is in full tooth engagement with the toothed pulley 3 within the engagement region 27, likewise becomes a circular orbit outside the angular region 27, but around the center point 22 with the pitch circle radius 24 between the housing wall 9 and the peripheral surface 18 of the crescent-shaped filler 8 , moves, taking a path from the suction chamber 10 to the pressure chamber 11.
  • the conveying means is transported from the tooth spaces 19 of the pulley 3 and the tooth spaces 21 of the toothed belt 4 along the boundary surfaces 18 and 20 to the pressure chamber 11, where the meshing teeth of toothed pulley 3 and toothed belt 4 convey the material is displaced from the tooth gaps 19 and 21 via the overflow channel 16 to the pressure-side pump outlet 15.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
  • Pulleys (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Valves And Accessory Devices For Braking Systems (AREA)

Claims (4)

  1. Pompe à courroie à denture intérieure présentant les caractéristiques suivantes:
    (a) dans un carter de forme cylindrique (1), un disque denté (3) est porté par un arbre d'entraînement (2) susceptible de tourner, monté de manière centrale, avec une liaison par l'action mécanique résultant de sa forme;
    (b) par deux galets de guidage (5, 6) montés susceptibles de tourner, en contact d'appui contre la partie arrière de la courroie dentée (4) est définie une zone de venue en prise (27), à l'intérieur de laquelle la denture intérieure de la courroie dentée (4) est de manière complète en prise d'engrènement avec la denture extérieure du disque denté (3);
    (c) le cercle primitif de la courroie dentée (4) est, à l'intérieur de la zone de venue en prise (27), tangent au cercle primitif du disque denté (3) par les galets de guidage (5, 6) en contact d'appui contre la partie arrière de la courroie dentée (4);
    (d) à l'intérieur de la zone de venue en prise (27), le rayon (26) de la partie arrière de la courroie dentée (4) correspond (en ne tenant pas compte du jeu de fonctionnement), en partant du centre (23) du disque denté (3), au rayon de la paroi intérieure du carter (7);
    (e) en dehors de la zone de venue en prise (27), la courroie dentée (4) se déplace suivant une trajectoire de révolution de forme circulaire autour d'un deuxième centre (22) avec un deuxième rayon de cercle primitif (24), les sommets des dents de la courroie dentée (4) sont en contact de glissement et avec un effet d'étanchéité, entre une chambre d'aspiration (10) et une chambre de refoulement (11), avec la surface périphérique (18) d'un élément intercalaire en forme de croissant (8), et la partie arrière de la courroie dentée (4) est disposée avec un très faible écartement et sans contact par rapport à la paroi intérieure du carter (7);
    (f) pour un observateur placé dans le sens de la rotation de l'engrenage, la chambre d'aspiration (10) est définie à la fin de la zone de venue en prise (27) et la chambre de refoulement (11) au début de la zone de venue en prise (27), les chambres (10, 11) étant volumétriquement délimitées par l'engrènement de la courroie dentée (4) et du disque denté (3), l'élément intercalaire en forme de croissant (8), la partie latérale du carter de la pompe et un couvercle (12);
    (g) les premiers et deuxièmes creux de dents (19, 21) étanches, formés par les sommets des dents de la courroie dentée (4) et du disque denté (3) avec les surfaces périphériques (18, 20) de l'élément intercalaire (8) transportent du liquide de la chambre d'aspiration (10) vers la chambre de refoulement (11).
  2. Pompe à courroie à denture intérieure selon la revendication 1, caractérisée en ce qu'un canal de trop-plein destiné à assurer une liaison entre l'entrée de la pompe côté aspiration (13) et la chambre d'aspiration (10) est usiné dans la paroi interne du couvercle (12).
  3. Pompe à courroie à denture intérieure selon la revendication 1 ou 2, caractérisée en ce qu'un canal de trop-plein destiné à assurer une liaison entre la sortie de la pompe côté refoulement (15) et la chambre de refoulement (11) est usiné dans la paroi interne du couvercle (12).
  4. Pompe à courroie à denture intérieure selon l'une des revendications 1 à 3, caractérisée en ce que latéralement dans la face du carter de la pompe (1), à l'intérieur de la chambre de refoulement (11) est usinée une gorge de liaison (17) qui compense la pression exercée sur le côté denté de la courroie dentée (4) avec la partie arrière de la courroie dentée (4).
EP95103052A 1994-04-25 1995-03-03 Pompe à courroies dentées Expired - Lifetime EP0684384B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4414319 1994-04-25
DE4414319A DE4414319C2 (de) 1994-04-25 1994-04-25 Innenzahnriemenpumpe

Publications (2)

Publication Number Publication Date
EP0684384A1 EP0684384A1 (fr) 1995-11-29
EP0684384B1 true EP0684384B1 (fr) 1997-12-17

Family

ID=6516329

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95103052A Expired - Lifetime EP0684384B1 (fr) 1994-04-25 1995-03-03 Pompe à courroies dentées

Country Status (12)

Country Link
US (1) US5782623A (fr)
EP (1) EP0684384B1 (fr)
JP (1) JPH09512319A (fr)
CN (1) CN1085787C (fr)
AT (1) ATE161316T1 (fr)
AU (1) AU692603B2 (fr)
CA (1) CA2188758A1 (fr)
CZ (1) CZ285350B6 (fr)
DE (3) DE4414319C2 (fr)
ES (1) ES2113688T3 (fr)
GR (1) GR3026378T3 (fr)
WO (1) WO1995029339A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998030801A1 (fr) * 1997-01-08 1998-07-16 Tickner, Stephen, Ronald Pompe pourvue d'une courroie crantee
GB9700277D0 (en) * 1997-01-08 1997-02-26 Woodhouse Timothy C Fluid pump
DE19748120C2 (de) * 1997-10-31 2003-01-02 Werner Scheffel Verdrängerpumpe
CN101608617B (zh) * 2008-06-20 2012-07-25 安徽理工大学 一种内啮合低脉动齿轮泵
DE102010034101B4 (de) * 2010-08-12 2013-02-28 Siemens Aktiengesellschaft Anordnung für die Strahlentherapie mit einem Haltearm zur Unterstützung diagnostischer Bestrahlung
TWI743126B (zh) * 2016-07-08 2021-10-21 瑞士商雀巢製品股份有限公司 旋轉式壓縮機配置
DE102020100915A1 (de) 2020-01-16 2021-07-22 Fink Chem + Tec GmbH Zahnradpumpe zum Fördern eines Fördermediums

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE460732C (de) * 1928-06-02 Max Ams Chemical Engineering C Zahnradpumpe mit zwei ineinanderliegenden Zahnraedern
US2745355A (en) * 1953-06-01 1956-05-15 Roper Corp Geo D Pump or fluid motor of the gear type
AT207693B (de) * 1957-06-12 1960-02-25 Elio Parodi Zahnradgetriebe mit umlaufendem Zahnkranz, insbesondere zum Fördern von Flüssigkeiten oder Gasen
GB903788A (en) * 1960-04-20 1962-08-22 Eisele Soehne Franz Improvements in or relating to double-acting rotary displacement pumps
CH591627A5 (fr) * 1975-12-19 1977-09-30 Rollstar Ag
DE2560128C2 (de) * 1975-12-22 1984-10-04 Manfred 7141 Beilstein Streicher Rotationskolbenpumpe
DE2558074C3 (de) * 1975-12-22 1981-04-30 Manfred 7141 Beilstein Streicher Rotationskolbenpumpe
JPS5557601A (en) * 1978-10-20 1980-04-28 Tokico Ltd Fluid machine
SU1355760A1 (ru) * 1984-07-20 1987-11-30 Омский политехнический институт Шестеренный насос
SU1399504A1 (ru) * 1985-12-13 1988-05-30 Предприятие П/Я В-8670 Шестеренна гидромашина внутреннего зацеплени
GB8817284D0 (en) * 1988-07-20 1988-08-24 Jaguar Cars Hydraulic devices
DE4218148A1 (de) * 1992-06-02 1992-10-08 Dieter Brox Zahnriemenpumpe

Also Published As

Publication number Publication date
CZ310196A3 (en) 1997-02-12
GR3026378T3 (en) 1998-06-30
DE4414319C2 (de) 1995-02-09
CN1146794A (zh) 1997-04-02
DE4414319A1 (de) 1994-09-29
ES2113688T3 (es) 1998-05-01
JPH09512319A (ja) 1997-12-09
WO1995029339A1 (fr) 1995-11-02
CZ285350B6 (cs) 1999-07-14
EP0684384A1 (fr) 1995-11-29
AU692603B2 (en) 1998-06-11
CA2188758A1 (fr) 1995-11-02
DE19510079A1 (de) 1996-09-26
US5782623A (en) 1998-07-21
AU3556395A (en) 1995-11-16
DE59501120D1 (de) 1998-01-29
CN1085787C (zh) 2002-05-29
ATE161316T1 (de) 1998-01-15

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