WO2003016720A1 - Pompe a engrenage - Google Patents
Pompe a engrenage Download PDFInfo
- Publication number
- WO2003016720A1 WO2003016720A1 PCT/EP2002/008970 EP0208970W WO03016720A1 WO 2003016720 A1 WO2003016720 A1 WO 2003016720A1 EP 0208970 W EP0208970 W EP 0208970W WO 03016720 A1 WO03016720 A1 WO 03016720A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- wheel
- wheels
- peripheral
- teeth
- central
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
- F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
- F01C21/10—Outer members for co-operation with rotary pistons; Casings
- F01C21/102—Adjustment of the interstices between moving and fixed parts of the machine by means other than fluid pressure
-
- 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
- F04C13/001—Pumps for particular liquids
- F04C13/002—Pumps for particular liquids for homogeneous viscous liquids
-
- 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
Definitions
- the present invention relates to positive displacement pumps intended in particular for rubber mixtures and, more particularly, gear pumps.
- volumetric gear pumps for high viscosity plastic materials such as that described in publication US 5 120 206.
- Such a pump uses a gear comprising a motorized drive gear wheel, “driving wheel”, and a second wheel in engagement with the first and driven in rotation by the latter, as well as a booster screw which makes it possible to forcefully feed said pump of high viscosity plastic material.
- the rubber mixtures also have a very high viscosity which causes a very high resistive torque on the driving wheel.
- This resistant torque is all the more important when one seeks to achieve high flow rates by increasing the width of the toothed wheels.
- the gear pump in particular for rubber mixtures, comprises an enclosure in which rotates a set of toothed wheels comprising a central toothed wheel which cooperates with two other peripheral toothed wheels, said pump comprising at least one supply chamber.
- at least one force-feeding means acts to push the material towards said enclosure through at least one passage orifice, each of the toothed wheels being driven directly by a driving torque and means of prestressing between the teeth ensuring tight contact of the meshing zone of the central wheel with each of the two peripheral wheels.
- This arrangement allows, on the one hand, the transmission of a motor torque to each toothed wheel of the gear and on the other hand a better distribution of the forces between the three toothed wheels making the pump more reliable and more resistant.
- the feed chamber comprises two orifices for passage towards the enclosure, the two orifices for passage being arranged symmetrically with respect to the center of the central wheel, and two orifices for leaving the mixture arranged symmetrically by relative to the center of the central wheel so that each passage orifice is disposed substantially symmetrically with an outlet orifice with respect to the straight line passing through the center of the three toothed wheels in projection in a plane perpendicular to the axes of said wheels.
- FIG. 1 is a partial longitudinal section of the pump according to the invention along line II shown in FIG. 2,
- FIG. 2 is an enlarged radial section of the pump according to the invention according to line II-II shown in FIG. 1,
- FIG. 3 is a functional section of the booster zone of the pump according to the invention according to line III shown in FIG. 2,
- FIG. 4 is a functional section of the delivery zone of the pump according to the invention along line IV shown in FIG. 2,
- FIG. 5 is a partial section of the prestressing means between the teeth of the pump along line V shown in Figure 1.
- the gear pump 1 comprises a body 10 comprising an enclosure 12 carrying a set 2 of toothed wheels whose function is to pump volumetrically.
- This assembly 2 comprises a central toothed wheel 4 which cooperate respectively with two peripheral toothed wheels 3 and 5.
- each of the two peripheral wheels 3, 5 respectively meshes with the central wheel 4 without however being engaged with the latter, in order to avoid in particular the driving of one of the toothed wheels by another.
- each of the toothed wheels 3, 4, 5 is driven directly by a motor so as, as mentioned above, to make the pump more reliable.
- a single motor can be used with a specific reduction gear to transmit power to each toothed wheel.
- the two toothed wheels 3 and 5 are arranged symmetrically with respect to the center of the central toothed wheel 4 which has an odd number of teeth.
- the two peripheral toothed wheels 3 and 5 have identical diameters and on each face of each of its wheels is positioned a flange 6 and 7 respectively for the wheel 3 and, 8 and 9 for the wheel 5.
- These flanges 6, 7, 8 , 9 whose diameter is greater than or equal to that of the end of the teeth of the wheels 3 and 5 make it possible to eliminate the lateral shearing of the rubber mixtures on the walls of the pump, which considerably reduces the shearing which is exerted on these mixtures.
- the small size of the gear wheels 3 and 5 makes it possible to generate low forces at the axes.
- each peripheral wheel 3, 5 prestressing means between the teeth of the central wheel 4 and respectively the peripheral wheels 3 and 5 allow, by means of the flanges 6, 7, 8, 9 to produce a system dynamic sealing by cantilevering said wheels 3 and 5 and by atmospheric pressure leaking of rubber mixtures.
- the prestressing means comprise a screw 25 engaged in a passage orifice which simultaneously passes through the drive shaft 11 of transmission to the shaft 51 of the wheel 5 and the shaft 51.
- the screw also passes through a convex key 26 whose walls convex are respectively in contact with a wall 111 of the drive shaft and a wall 511 of the shaft 51 so that the tightening of the screw 25 generates by means of the key 26 a torsional torque between the shaft motor 11 and the shaft 51.
- This prestress acts in the same direction as the rotation of the pump represented by the arrow F.
- the body 10 carries a feeding means which essentially consists of a screw 15, which rotates in a supply chamber 16.
- the supply and pressurization chamber 16 comprises, on the side opposite the assembly 2 of the wheels, a supply port (not shown) used to supply the pump.
- These through holes 17, 18 are arranged symmetrically with respect to one another with respect to the center of the central wheel 4 and such that they are respectively disposed near said central wheel and one peripheral wheels.
- the enclosure 12 opens onto two outlet openings for the mixture 19 and 20, also arranged symmetrically with respect to one another with respect to the center of the central wheel 4, so that they are respectively arranged at proximity of said central wheel and one of the peripheral wheels, so that each passage orifice 17, 18 is disposed substantially symmetrically with an outlet orifice 19, 20 relative to the straight line passing through the center of the three toothed wheels 3, 4, 5 in projection in a plane perpendicular to the axes of said wheels.
- the distance between the inlet zone into the enclosure 12 and the discharge zone is minimal, which also facilitates the guarantee of tightness.
- the shape of the teeth has been optimized to convey the mixture in the enclosure 12.
- the displacement of the tooth axes is as large as possible while the peripheral shear surfaces are reduced.
- the outlet orifices 19 and 20 open respectively into two channels, only the channel 19 'corresponding to the orifice 19 is shown in FIG. 4.
- the two channels meet at the junction zone 22 in a channel 23 up to a outlet 24.
- a rubber mixture is introduced into the supply chamber 16 through an orifice not shown, in a form which can be either a continuous strip or granules. The mixture is thus distributed on the booster screw 15.
- the rubber mixture is discharged by being pressurized up to the passage orifices 17 and 18 which lead it into the enclosure 12, opening opposite to the center of the main wheel 4 as shown in FIG. 2.
- B and C denote the two parts of the mixture emerging respectively from the orifices 17 and 18 to follow their course using the arrows shown in FIG. 2.
- Part of the mixture B thus engages in the hollows of teeth of the peripheral wheel 5 up to the outlet orifice 19 while the other part of the mixture B engages in the opposite direction of rotation in the hollows of teeth from the central wheel 4 to the orifice 20.
- part of the flow of the mixture C engages in the hollows of teeth of the peripheral wheel 3 up to the orifice 20 and the other part in the opposite direction of rotation in the hollows of teeth of the wheel 4 to port 19.
- the pre-stressed mounting of the teeth of the wheels 3 and 5 respectively in contact with the teeth of the wheel 4 prevents the mixture from creeping between the teeth of the wheels 3 and 4 or 5 and 4.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Rotary Pumps (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
- Lubrication Of Internal Combustion Engines (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003520986A JP4279139B2 (ja) | 2001-08-16 | 2002-08-09 | ギヤポンプ |
EP02758458A EP1421281B1 (fr) | 2001-08-16 | 2002-08-09 | Pompe a engrenage |
DE60224811T DE60224811T2 (de) | 2001-08-16 | 2002-08-09 | Zahnradpumpe |
US10/778,224 US7335005B2 (en) | 2001-08-16 | 2004-02-17 | Gear pump with prestressed gear teeth |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0110879 | 2001-08-16 | ||
FR0110879A FR2828717A1 (fr) | 2001-08-16 | 2001-08-16 | Pompe a engrenage |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/778,224 Continuation US7335005B2 (en) | 2001-08-16 | 2004-02-17 | Gear pump with prestressed gear teeth |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2003016720A1 true WO2003016720A1 (fr) | 2003-02-27 |
Family
ID=8866580
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2002/008970 WO2003016720A1 (fr) | 2001-08-16 | 2002-08-09 | Pompe a engrenage |
Country Status (8)
Country | Link |
---|---|
US (1) | US7335005B2 (fr) |
EP (1) | EP1421281B1 (fr) |
JP (1) | JP4279139B2 (fr) |
CN (1) | CN1320276C (fr) |
AT (1) | ATE384875T1 (fr) |
DE (1) | DE60224811T2 (fr) |
FR (1) | FR2828717A1 (fr) |
WO (1) | WO2003016720A1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007508965A (ja) * | 2003-10-22 | 2007-04-12 | ベルシュトルフ・ゲゼルシャフト・ミト・ベシュレンクテル・ハフツング | 歯車ポンプ |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8292597B2 (en) * | 2008-10-16 | 2012-10-23 | Pratt & Whitney Canada Corp. | High-speed gear pump |
US8137085B2 (en) * | 2008-12-18 | 2012-03-20 | Hamilton Sundstrand Corporation | Gear pump with slots in teeth to reduce cavitation |
US8087913B2 (en) * | 2008-12-22 | 2012-01-03 | Hamilton Sundstrand Corporation | Gear pump with unequal gear teeth on drive and driven gear |
CN103206258A (zh) * | 2012-01-16 | 2013-07-17 | 陈园国 | 新形式气动马达 |
CN109882406B (zh) * | 2019-04-18 | 2024-05-28 | 青岛科技大学 | 一种双齿吃料式橡胶齿轮泵 |
CN111005867B (zh) * | 2019-12-25 | 2021-10-08 | 潍柴动力股份有限公司 | 一种泵的驱动轴连接结构及组合齿轮泵 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1103716A (fr) * | 1953-12-28 | 1955-11-07 | Prec Ind | Perfectionnement aux pompes à engrenages multiples |
DE2321639A1 (de) * | 1973-04-28 | 1974-11-07 | Georg Draeger | Zahnradpumpe bzw. zahnradmotor |
US4025056A (en) * | 1974-07-15 | 1977-05-24 | Imperial Chemical Industries Limited | Mixing apparatus |
US5120206A (en) | 1991-04-08 | 1992-06-09 | Bridgestone/Firestone, Inc. | Gear metering pump for compounded elastomeric material |
US5224838A (en) * | 1991-04-07 | 1993-07-06 | Paul Troester Maschinenfabrik | Gear pump with groover sealing means |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2088121A (en) * | 1932-10-01 | 1937-07-27 | Swink Rufus Clyde | Rotary engine |
US3050009A (en) * | 1960-10-28 | 1962-08-21 | Lowry Hydraulic Co | Postitive pressure pump |
GB1057282A (en) * | 1963-04-19 | 1967-02-01 | John Wilmott Marshall | Rotary internal combustion engines and fluid motors |
US3854492A (en) * | 1969-07-31 | 1974-12-17 | Shimadzu Corp | Gear type flow divider |
US3941527A (en) * | 1974-10-29 | 1976-03-02 | Allington Jackson H | Rotary engine |
US4145168A (en) * | 1976-11-12 | 1979-03-20 | Bobby J. Travis | Fluid flow rotating machinery of lobe type |
SE407839B (sv) * | 1977-09-15 | 1979-04-23 | Imo Industri Ab | Skruvmaskin |
DE4130312C1 (fr) * | 1991-09-12 | 1992-12-24 | Hermann Berstorff Maschinenbau Gmbh, 3000 Hannover, De | |
CN2118181U (zh) * | 1992-01-04 | 1992-10-07 | 万舜伯 | 行星齿轮泵 |
US5788471A (en) * | 1996-06-11 | 1998-08-04 | Eaton Corporation | Spool valve wheel motor |
-
2001
- 2001-08-16 FR FR0110879A patent/FR2828717A1/fr active Pending
-
2002
- 2002-08-09 CN CNB028159829A patent/CN1320276C/zh not_active Expired - Fee Related
- 2002-08-09 JP JP2003520986A patent/JP4279139B2/ja not_active Expired - Fee Related
- 2002-08-09 AT AT02758458T patent/ATE384875T1/de not_active IP Right Cessation
- 2002-08-09 DE DE60224811T patent/DE60224811T2/de not_active Expired - Lifetime
- 2002-08-09 WO PCT/EP2002/008970 patent/WO2003016720A1/fr active IP Right Grant
- 2002-08-09 EP EP02758458A patent/EP1421281B1/fr not_active Expired - Lifetime
-
2004
- 2004-02-17 US US10/778,224 patent/US7335005B2/en not_active Expired - Fee Related
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1103716A (fr) * | 1953-12-28 | 1955-11-07 | Prec Ind | Perfectionnement aux pompes à engrenages multiples |
DE2321639A1 (de) * | 1973-04-28 | 1974-11-07 | Georg Draeger | Zahnradpumpe bzw. zahnradmotor |
US4025056A (en) * | 1974-07-15 | 1977-05-24 | Imperial Chemical Industries Limited | Mixing apparatus |
US5224838A (en) * | 1991-04-07 | 1993-07-06 | Paul Troester Maschinenfabrik | Gear pump with groover sealing means |
US5120206A (en) | 1991-04-08 | 1992-06-09 | Bridgestone/Firestone, Inc. | Gear metering pump for compounded elastomeric material |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007508965A (ja) * | 2003-10-22 | 2007-04-12 | ベルシュトルフ・ゲゼルシャフト・ミト・ベシュレンクテル・ハフツング | 歯車ポンプ |
Also Published As
Publication number | Publication date |
---|---|
CN1320276C (zh) | 2007-06-06 |
US7335005B2 (en) | 2008-02-26 |
DE60224811T2 (de) | 2009-01-22 |
EP1421281B1 (fr) | 2008-01-23 |
FR2828717A1 (fr) | 2003-02-21 |
JP4279139B2 (ja) | 2009-06-17 |
EP1421281A1 (fr) | 2004-05-26 |
ATE384875T1 (de) | 2008-02-15 |
JP2005500456A (ja) | 2005-01-06 |
DE60224811D1 (de) | 2008-03-13 |
US20040161357A1 (en) | 2004-08-19 |
CN1543541A (zh) | 2004-11-03 |
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