CN201363269Y - Circular arc tooth conjugated inner gearing gear pump - Google Patents
Circular arc tooth conjugated inner gearing gear pump Download PDFInfo
- Publication number
- CN201363269Y CN201363269Y CNU2009200192858U CN200920019285U CN201363269Y CN 201363269 Y CN201363269 Y CN 201363269Y CN U2009200192858 U CNU2009200192858 U CN U2009200192858U CN 200920019285 U CN200920019285 U CN 200920019285U CN 201363269 Y CN201363269 Y CN 201363269Y
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- China
- Prior art keywords
- circular arc
- crescent
- pinion
- gear
- pump
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Abstract
The utility model relates to a circular arc tooth conjugated inner gearing gear pump, which mainly comprises a drive shaft, a pinion, a geared ring and a crescent-shaped separator, wherein the drive shaft in a pump casing drives the pinion, the pinion is geared with the geared ring, and runs with the geared ring in the same direction, the crescent-shaped separator which is arranged between the pinion and the geared ring divides the inner cavity of the pump casing into an oil suction cavity and an oil pressure cavity which are respectively independent. The circular arc tooth conjugated inner gearing gear pump is characterized in that tooth profiles on two sides of the pinion are designed into circular arc shapes, one end of the crescent-shaped separator and the pump casing on the rear segment are casted into one body, the other end is fixed on the pump casing on the front end through a straight pin, and a bearing of the drive shaft and a composite sleeve are provided with independent forced lubrication oil ways. The circular arc shaped tooth profile of the pinion leads an internally-geared gear pump to run more easily and reasonably, the crescent-shaped separator can not shake in running, the abrasion between the outer tooth surface of the pinion and the inner tooth surface of the geared ring is reduced, and by-pass forced lubrication plays an obvious effect of prolonging the service span of the device. The circular arc tooth conjugated inner gearing gear pump has easier running, low working noise, small friction coefficient and excellent lubrication effect.
Description
Technical field
The utility model belongs to the fluid machinery technical field, is specifically related to a kind of circle-arc tooth conjugate crescent seal gear pump.
Background technique
The circle-arc tooth crescent gear pump drives small gear by transmission shaft usually by pump case with holes in pump case, gear ring is given in transmission, because the effect of crescent shape divider forms two independently enclosed cavities, oil sucting cavity and pumping cavity, because the volume-variation of two oil pockets realizes pump oil process.
In the crescent gear pump of prior art, gear or gear ring are the teeth of straight shape tooth, round tooth or involute shape; The crescent shape divider floats, and has increased the manufacture difficulty and the unstability of oil pump, and difficulty of processing is bigger, and manufacturing efficiency is low, the processing cost height.
The model utility content
Goal of the invention of the present utility model is to improve the structure of prior art crescent gear pump, and difficulty of processing is reduced, and processing cost lowers, and manufacturing efficiency improves.
Goal of the invention of the present utility model is implemented by following technical solution:
Develop a kind of circle-arc tooth conjugate crescent seal gear pump, mainly by transmission shaft, small gear, gear ring and crescent shape divider constitute, pump case intermediate solid drive shaft driving pinion, the pinion gear ring turns round in the same way, and the crescent shape divider that is provided with between small gear and gear ring is divided into separately independently oil sucting cavity and pumping cavity with the pump case inner chamber, it is characterized in that:
1. small gear 2 both sides flank profils are set to circular arc;
2. crescent shape divider 4 one ends and back segment pump case 6 are cast as one, and the other end is fixed on the front end pump case 5 through straight pin 10;
3. the bearing 19 of transmission shaft 1 and compound cover 7-1,7-2 are provided with independent pressure lubrication oil circuit 17.
Above-mentioned circle-arc tooth conjugate crescent seal gear pump is characterized in that described small gear 2 both sides flank profil 2-1 are set to circular arc, and this circular arc flank profil is R=60mm～120mm to the radian of central angle.
Above-mentioned circle-arc tooth conjugate crescent seal gear pump is characterized in that described pressure lubrication oil circuit 17, is meant that an end is set connects oil sucting cavity 8, the pressure lubrication oil circuit 17 that the other end connection bearing 19 and compound cover 7-1,7-2 constitute
The utility model is a circular arc with the tooth Profile Design of small gear 2, and promptly profile of tooth both sides flank profil is represented with R; Make crescent gear pump on-stream lighter, more reasonable, more be better than the prior art that the small gear flank profil is designed to circle, lineal shape and involute shape.
Crescent shape divider one end and pump case are cast as one, along with the progress of machining and the raising of precision, work in-process can an input routine, crescent shape divider and pump case time processing finish, the precision and the manufacturing efficiency of workpiece have been improved, reduced floating type crescent shape cut piece and added man-hour separately, the error that is added up because of the multitrack operation link; The other end of crescent shape divider 4 is fixed on the leading portion pump case 5 with straight pin 10, like this structure, increased crescent shape divider 4 at high pressure greater than the intensity under the 30 MPa working staties, be not stressed size and be out of shape and fluid runs off, improved volumetric efficiency; Its advantage is that crescent shape divider 4 can not tremble in the running; The wearing and tearing of the small gear 2 outer flank of tooth and gear ring 3 inner toothed surface have been reduced simultaneously.
In order to improve lubricating quality to compound bearing, designed an independent lubricating oil path, used the bypass pressure lubrication, played the positive effect that prolongs service life of equipment.
Beneficial effect: the technical solution of the utility model is than the crescent gear pump of prior art, and it is lighter to turn round, and operating noise is low, and friction factor is little, high lubricating effect.
Description of drawings
Fig. 1 is the utility model overall structure cross-sectional schematic;
Fig. 2 is the fixedly straight pin and the pressure lubrication oil circuit position partial schematic sectional view of swing link;
Fig. 3 is a small gear, gear ring, swing link, oil sucting cavity, the position view of pumping cavity;
Fig. 4 is A portion part (profile of tooth) enlarged diagram among Fig. 3.
Embodiment
Below in conjunction with accompanying drawing the utility model is further elaborated:
Among Fig. 1,1 transmission shaft; 2 small gears; The flank profil of 2-1 small gear; 3 gear rings; 5 leading portion pump cases; 6 back segment pump cases; 7-1,7-2 are compound cover; 11 fastening pieces; 12 rear end covers; 13 front covers; 14 backbone sealing rings; 15 ring washers; The locating stud of 18 leading portion pump cases and back segment pump case; 19 bearings.
Among Fig. 2,8 oil sucting cavities; 10 straight pins; 17 pressure lubrication oil circuits; All the other labels are the same.
Among Fig. 3,4 crescent shape dividers; 8 oil sucting cavities; 9 pumping cavities; The tooth of A small gear; All the other labels are the same.
Among Fig. 4,2-1 is the flank profil of small gear.
Mode of execution
The transmission shaft 1 of the utility model circle-arc tooth conjugate crescent seal gear pump connects small gear 2, and (flat key 16 through being provided with) driving pinion 2, and power transmission is again given the gear ring 3 of direct motion, and the running load of pump shaft has bearing 19 and compound cover 7-1,7-2 to finish.Ring washer 15 has been fixed bearing, has prevented the play of transmission shaft.These two ends are located correct position at pump case by front cover 13 and rear end cover 12; Gear ring 3 is arranged at interior and small gear 2 engagements of counterbore of back segment pump case 6, and crescent shape divider 4 is arranged between small gear 2 and the gear ring 3, and crescent shape divider 4 one ends and back segment pump case 6 are cast as one, and the other end is fixed on the leading portion pump case 5 by straight pin 10; The oil sources of pressure lubrication oil circuit 17 in oil sucting cavity 8 oil forces to input to compound cover 7-1,7-2 and bearing 19.
Through on probation, there has been the pressure lubrication oil circuit of science lubricated, firmer crescent shape divider has relatively been arranged, the relative more rational engagement of flank profil circular arc line with the gear ring of small gear has been arranged, oeverall quality is improved, and has reached the goal of the invention of expection.
Claims (3)
1. circle-arc tooth conjugate crescent seal gear pump, mainly by transmission shaft, small gear, gear ring and crescent shape divider constitute, pump case intermediate solid drive shaft driving pinion, the pinion gear ring turns round in the same way, and the crescent shape divider that is provided with between small gear and gear ring is divided into separately independently oil sucting cavity and pumping cavity with the pump case inner chamber, it is characterized in that:
1. small gear (2) both sides flank profil is set to circular arc;
2. crescent shape divider (4) one ends and back segment pump case (6) are cast as one, and the other end is fixed on the front end pump case (5) through straight pin (10);
3. the bearing (19) of transmission shaft (1) and compound cover (7-1), (7-2) are provided with independent pressure lubrication oil circuit (17).
2. circle-arc tooth conjugate crescent seal gear pump according to claim 1 is characterized in that described small gear (2) both sides flank profils (2-1) are set to circular arc, and this circular arc flank profil is R=60mm～120mm to the radian of central angle.
3. circle-arc tooth conjugate crescent seal gear pump according to claim 1, it is characterized in that described pressure lubrication oil circuit (17), be meant that an end is set connects oil sucting cavity (8), the pressure lubrication oil circuit (17) that the other end connection bearing (19) and compound cover (7-1), (7-2) constitute
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200192858U CN201363269Y (en) | 2009-02-13 | 2009-02-13 | Circular arc tooth conjugated inner gearing gear pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200192858U CN201363269Y (en) | 2009-02-13 | 2009-02-13 | Circular arc tooth conjugated inner gearing gear pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201363269Y true CN201363269Y (en) | 2009-12-16 |
Family
ID=41473933
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2009200192858U Expired - Fee Related CN201363269Y (en) | 2009-02-13 | 2009-02-13 | Circular arc tooth conjugated inner gearing gear pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201363269Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103925352A (en) * | 2014-03-31 | 2014-07-16 | 西安理工大学 | Same-direction meshing conjugate tooth profile pair and construction method |
| CN104295607A (en) * | 2014-09-11 | 2015-01-21 | 吴斯灏 | Improved servo control oil supply device |
| CN112639290A (en) * | 2018-11-26 | 2021-04-09 | 住友精密工业株式会社 | Internal gear pump |
-
2009
- 2009-02-13 CN CNU2009200192858U patent/CN201363269Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103925352A (en) * | 2014-03-31 | 2014-07-16 | 西安理工大学 | Same-direction meshing conjugate tooth profile pair and construction method |
| CN103925352B (en) * | 2014-03-31 | 2016-08-17 | 西安理工大学 | One engages conjugate profiles pair and building method in the same direction |
| CN104295607A (en) * | 2014-09-11 | 2015-01-21 | 吴斯灏 | Improved servo control oil supply device |
| CN104295607B (en) * | 2014-09-11 | 2017-11-28 | 苏州萨伯工业设计有限公司 | Modified SERVO CONTROL fueller |
| CN112639290A (en) * | 2018-11-26 | 2021-04-09 | 住友精密工业株式会社 | Internal gear pump |
| CN112639290B (en) * | 2018-11-26 | 2021-10-08 | 住友精密工业株式会社 | Internal gear pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091216 Termination date: 20120213 |