CN2202811Y - High-function double-actionhy drolic paddle pump - Google Patents
High-function double-actionhy drolic paddle pump Download PDFInfo
- Publication number
- CN2202811Y CN2202811Y CN 93246382 CN93246382U CN2202811Y CN 2202811 Y CN2202811 Y CN 2202811Y CN 93246382 CN93246382 CN 93246382 CN 93246382 U CN93246382 U CN 93246382U CN 2202811 Y CN2202811 Y CN 2202811Y
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- Prior art keywords
- oil
- stator
- groove
- blade
- circular arc
- Prior art date
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- Expired - Fee Related
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- Details And Applications Of Rotary Liquid Pumps (AREA)
- Rotary Pumps (AREA)
Abstract
The utility model relates to a high-performance double-function hydraulic vane pump which belongs to the field of a mechanical device of a liquid volume fixing type. The utility model is characterized in that four sections of circular arc-shaped oil-through grooves are arranged on a port plate which is contacted with the root of a rotor vane groove, the top of a vane adopts a double chamfering shape, and an angle at a circular arc zone of a stator is from 45 to 50 DEG. When the pump works, the contact stress of the vane for the stator in an oil sucking and pressing zone is obviously reduced. The utility model has the advantages of high pressure, small pressure pulsation, low noise, high efficiency and long service life, and is widely used for the fields of machine tools, engineering machines, die casting machines, plastic machines, etc.
Description
The utility model is a kind of high-performance double-action hydraulic vane pump of design.Belong to liquid constant volume mechanical device.
At present, in the mesohigh that has various structures, high-pressure and hydraulic vane pump, relatively the traditional product that U.S. Vickers Ltd. is arranged of success is the double leaf chip vane pump that mother and sons' blade structure and West Germany rex Luo Te company produce in the world.But they are existing deficiency in varying degrees.As: the primary-auxiliary type vane pump, between female, sub two blades one loculus is arranged, pump is under load behavior, and loculus communicates with high pressure oil all the time.Narrower because of seal area between mother, sub two blades, when blade was in the oil suction district, the high pressure oil in the loculus passed through two interlobate gaps easily, and produced internal leakage with the rotor gap, thereby influenced the raising of the volumetric efficiency of pump.And double leaf chip vane pump, because of vane tip and bottom communication, pressure is in a basic balance before and after the blade, but narrower because of seal area, and part processing precision is required high, the gap is too small between two blades, it is insensitive to work, and influences performance and life-span, and the gap is big, volumetric efficiency is lower again.Its common shortcoming part is: comparatively complicated on the structure, processability of product structure is relatively poor, and cost of production is higher, and volume is bigger.
The purpose of this utility model designs a kind of simple in structure, pressure is high, noise is low, efficient is high, volume is little high-performance hydraulic vane pump exactly.
Technical characterstic of the present utility model is to utilize centrifugal action, makes blade contact with stator inner surface.To be divided into four sections with the logical oil groove of the contacted circular arc of rotor vane groove root on the thrust plate, two sections logical high pressure oils wherein, two sections logical low pressure oil in addition, and be symmetrically distributed respectively, the hydraulic coupling that makes vane tip and bottom inhale, laminated oil zone is all in a basic balance, can not produce that institute causes blade and the excessive contact stress of stator generation because pressure raises; Adopt the blade of two chamfer shapes, blade has two seamed edges contact with stator inner surface simultaneously in stator circular arc district all the time, and blade inhale, during laminated oil zone (being on the stator transition curve) slip, two seamed edges of blade contact with stator inner surface in turn; Stator circular arc district angle is got 45 °-50 °, is provided with the triangle compensating groove in oil distribution casing oil sucting cavity two edges, and at stator cylindrical place the vibration isolation circle is set.
The utility model compared with prior art, owing on thrust plate, be provided with the logical oil groove of four arcs shape, adopt two chamfer shapes with vane tip, and the stator arc angle is definite, with the vibration isolation circle that stator cylindrical place is provided with, make pump when work, blade is in suction, laminated oil zone and circular arc district, contact stress to stator obviously reduces, and has improved the life-span of mechanical efficiency and stator; The influence that give birth to because of radial motion convection current volume production vane tip and bottom is cancelled each other, thereby has reduced the pressure pulsation that causes because of flow pulsation; Vane tip adopts two chamfer shapes also to make blade in the circular arc district, and sealing is strengthened, and the internal leakage of pump is reduced, and has improved volumetric efficiency.Blade is in suction, laminated oil zone simultaneously, and two seamed edges on each blade contact with the transition curve of stator inner surface in turn, have improved the life-span of blade; Be provided with the triangle compensating groove in thrust plate oil sucting cavity two edges, reduce the noise of pump.
Fig. 1 of Figure of description is the axial sectional view of high-performance hydraulic vane pump; Fig. 2 is a high-performance hydraulic vane pump longitudinal section view.
Further narrate below in conjunction with Figure of description of the present utility model:
The utility model high-performance hydraulic vane pump is by rotor 3, blade 5, and thrust plate 2,6 is tightened to an assembly with screw earlier, in the pump housing 1,7 of packing into then.Four arcs on rotor 3 and stator 4 internal surfaces is concentric.Inner surface configuration is like oval.
Be provided with the logical oil groove of four arcs shape on thrust plate described in the utility model, wherein two sections is the oil grooves 10 of logical high pressure oil, in addition two sections oil groove 11 and symmetrical distributions for logical low pressure oil.When rotor 3 rotation, because action of centrifugal force, make the top of blade 5 be close to the internal surface of stator 4.When blade entered the oil suction district, blade was protruding, and the volume between adjacent blades increases gradually, and the circular arc from thrust plate 2,6 is led to oil groove 11 fuel feeding of low pressure oil.When blade entered laminated oil zone, blade 5 was moved to the center by the restriction of stator 4, and the volume between the adjacent blades reduces gradually, and fluid is extruded through the pressure oil window of thrust plate 6.The bottom of blade 5 also communicates with the oil groove 10 of the circular arc high pressure oil of thrust plate 2,6.Thereby the active force that guarantees vane tip and bottom is in a basic balance.When blade 5 firm when entering the circular arc district from the oil suction district, or when entering the circular arc district from laminated oil zone is firm, in order to prevent that blade 5 from coming to nothing or clash into, the two ends that lead to the oil groove 10 of high pressure oil two sections circular arcs are respectively equipped with leg-of-mutton vibration damping groove 9, and are provided with triangle compensating groove 12 in oil distribution casing oil sucting cavity two edges.Blade 5 described in the utility model, adopt two chamfer shapes at its top, make blade 5 enter the circular arc district by the oil suction district, or enter the circular arc district by laminated oil zone, all there is 1/3rd masterpiece of the bottom liquid pressure that is equivalent to act on blade 5 to be used for the top of blade 5, two seamed edges are arranged at the top because of blade 5 again, blade 5 contact stress to stator in the circular arc district is obviously reduced, and strengthened the sealing of blade 5 in the circular arc district.Cylindrical place at stator 4 is provided with vibration isolation circle 8, to reduce the noise of pump when working.At the excessive contact stress of transition zone and jointing place, circular arc district, the angle of determining the circular arc of stator 4 is 45 °-50 ° for fear of blade 5.
The utility model is when work, and rotor 3 is whenever goed around, and each sealed volume is finished twice oil suction and pressed oil.
Claims (4)
1, a kind of high-performance hydraulic vane pump is made up of rotor, blade, stator, thrust plate, the pump housing, it is characterized in that with the contacted thrust plate of rotor vane groove root on be provided with the logical oil groove of four arcs shape; Two chamfer shapes are adopted at the top of blade (5); The circular arc district angle of stator (4) is 45 °-50 °; Be provided with the triangle compensating groove in oil distribution casing oil sucting cavity two edges.
2, high-performance hydraulic vane pump according to claim 1 is characterized in that being provided with vibration isolation circle (8) at the cylindrical place of described stator (4).
3, high-performance hydraulic vane pump according to claim 1 is characterized in that described four arcs shape is led to oil groove, is respectively that two sections circular arcs that are symmetrically distributed are led to the oil groove (10) of high pressure oil and the oil groove (11) of two sections logical low pressure oil.
4,, it is characterized in that the two ends of the oil groove (10) of the logical high pressure oil of described two sections circular arcs are respectively equipped with triangle vibration damping groove (9) according to claim 1 or 3 described high-performance hydraulic vane pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93246382 CN2202811Y (en) | 1993-12-08 | 1993-12-08 | High-function double-actionhy drolic paddle pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93246382 CN2202811Y (en) | 1993-12-08 | 1993-12-08 | High-function double-actionhy drolic paddle pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2202811Y true CN2202811Y (en) | 1995-07-05 |
Family
ID=33819082
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93246382 Expired - Fee Related CN2202811Y (en) | 1993-12-08 | 1993-12-08 | High-function double-actionhy drolic paddle pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2202811Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102141037A (en) * | 2011-03-08 | 2011-08-03 | 孙国校 | High-pressure hydraulic pressure vane pump |
| CN102979726A (en) * | 2012-12-10 | 2013-03-20 | 安徽江淮汽车股份有限公司 | Power steering pump assembly |
-
1993
- 1993-12-08 CN CN 93246382 patent/CN2202811Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102141037A (en) * | 2011-03-08 | 2011-08-03 | 孙国校 | High-pressure hydraulic pressure vane pump |
| CN102979726A (en) * | 2012-12-10 | 2013-03-20 | 安徽江淮汽车股份有限公司 | Power steering pump assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |