CN203856716U - Low-rotating-speed vane pump - Google Patents
Low-rotating-speed vane pump Download PDFInfo
- Publication number
- CN203856716U CN203856716U CN201420187617.4U CN201420187617U CN203856716U CN 203856716 U CN203856716 U CN 203856716U CN 201420187617 U CN201420187617 U CN 201420187617U CN 203856716 U CN203856716 U CN 203856716U
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- stator
- low
- vane pump
- rotor
- rotating speed
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Abstract
The utility model discloses a low-rotating-speed vane pump which comprises a rotor, a stator and vanes, wherein the multiple vanes are respectively mounted in a plurality of grooves in the outer circumference of the rotor; the surface of an inner cavity of the stator is formed by connecting long-shaft curved surfaces and short-shaft curved surfaces in the circumferential direction at intervals; pressure springs are mounted between the bottoms in the grooves and the bottoms of the vanes; due to the elasticity of the pressure springs, the tops of the vanes are tightly attached to the long-shaft curved surfaces of the inner cavity of the stator. The pressure springs are mounted between the bottoms in the grooves and the bottoms of the vanes, so that the tops of the vanes are tightly attached to the long-shaft curved surfaces of the inner cavity of the stator to realize sealing, and the aims of successfully realizing oil suction and discharging functions are fulfilled under a condition that the rotor has a low rotating speed of 60-150r/m, and therefore, the vane pump can be applied to an occasion in which a power shaft is low in rotating speed, such as an oil supply occasion, and is high in working efficiency.
Description
Technical field
The utility model relates to a kind of vane pump, relates in particular to a kind of by the shaft-driven low-rotating speed vane pump of slow-revving power.
Background technique
Vane pump is mainly by rotor, stator, blade, the parts such as oil distribution casing and end cap form, be used for pump oil, rotor is wherein by external line shaft driven rotary, the surface of internal cavity of stator at circumferencial direction by two major axis curved surfaces (being the curved surface that radius is greater than minor axis subsequent corrosion) and alternate being formed by connecting of two minor axis curved surfaces (being the curved surface that radius is less than major axis subsequent corrosion), rotor is installed in stator, between rotor and stator, exist bias, multiple blades are arranged on respectively in the groove in rotor outer circle week and can slide flexibly, rotor rotate centrifugal force and pass under the effect of root of blade pressure oil, vane tip is adjacent on stator inner surface, so two adjacent blades, oil distribution casing, between stator and rotor, just form the active chamber of sealing one by one.The swept volume that such two blades and rotor and stator inner surface form, descending oil extraction again after first ascending oil suction, thus complete oil suction and oil extraction.
Traditional blades pump is to drive rotor high-speed (1000～10000 revs/min) rotation that centrifugal blade throwing away with bore of stator curved surface coordinated by high-revolving line shaft, by hydraulic oil by the place's oil suction of stator major axis curved surface, minor axis curved surface place pumps pressure oil, circulate with this, reach the object that pumps certain flow.But in practical application, some occasion is as used in drilling well time, because line shaft rotating speed is lower, such as being 60～150 revs/min, cannot rotor driven High Rotation Speed, its centrifugal force is less, be difficult to make vane tip to be adjacent on stator inner surface, thus the active chamber of sealing cannot be formed, thus cannot realize oil suction and oil extraction, or can partly realize, but inefficiency.So traditional vane pump is difficult to be applied in the occasion that line shaft rotating speed is lower.
Model utility content
The purpose of this utility model is just to provide in order to address the above problem a kind of can guarantee under the slow-speed of revolution that vane tip is adjacent to the low-rotating speed vane pump at stator inner surface.
The utility model is achieved through the following technical solutions above-mentioned purpose:
A kind of low-rotating speed vane pump, comprise rotor, stator and blade, multiple described blades are installed on respectively in multiple grooves in described rotor outer circle week, the surface of internal cavity of described stator is formed by connecting by major axis curved surface is alternate with minor axis curved surface at circumferencial direction, between bottom in described groove and the bottom of described blade, stage clip is installed, the spring energy of described stage clip guarantees to make the top of described blade to be adjacent on the major axis curved surface of described bore of stator.
In said structure, the elasticity that the effect of stage clip is to utilize himself by blade to extrapolation, thereby the top of blade is adjacent on the major axis curved surface of bore of stator, realize the sealing between blade and the surface of internal cavity of stator, thereby realize the function of oil suction and oil extraction.
Preferably, described stage clip is sheet stage clip, and the bottom of described blade is provided with " U " shape groove, and two groove angles of described " U " shape groove are withstood respectively at the two ends of described sheet stage clip.This springs makes the two ends pressurized of blade even, guarantees the sealing effect between blade and stator.
Preferably, the surface of internal cavity of described stator at circumferencial direction by three major axis curved surfaces and three alternate being formed by connecting of minor axis curved surface.The surface of internal cavity of the stator of traditional blades pump at circumferencial direction by two major axis curved surfaces and two alternate being formed by connecting of minor axis curved surface, in the time that the rotating speed of rotor is lower, the less problem of oil mass that existence is pumped, the utility model adopts three major axis curved surfaces and three minor axis curved surfaces, can improve the oil mass pumping.
In order to ensure sealing effect, between the two ends of described stator and two end caps, be separately installed with exterior seal ring, between the two ends of described rotor and two end caps, be separately installed with inner seal ring.This structure can guarantee this vane pump in the time that surrounding enviroment have pressure (as in water, or in other various media environments that have pressure) all can be reliably, normally work.
Further, between the two ends of described stator and two end caps, be connected by hollow tapped locating stud respectively.Dismounting when hollow tapped locating stud is convenient to assembling, maintenance, by endoporus exhaust, is convenient to smooth assembling while press-fiting; When dismounting, only need be screwed into the screw of identical thread standard, can split out smoothly, quick and easy, reliable.
The beneficial effects of the utility model are:
The utility model is by installing stage clip between the bottom in groove and the bottom of blade, the top of blade is adjacent on the major axis curved surface of bore of stator and realizes sealing, reach the object that realizes smoothly oil suction and oil extraction function at rotor in the slow-speed of revolution as 60～150 revs/min in the situation that, so this vane pump can be applied in occasion that line shaft rotating speed is lower as down-hole fuel feeding occasion, and has higher working efficiency.
Brief description of the drawings
Fig. 1 is the axial sectional view of low-rotating speed vane pump described in the utility model;
Fig. 2 is the A-A sectional view in Fig. 1;
Fig. 3 is the surface of internal cavity shape schematic diagram of stator described in the utility model, and visual angle is consistent with Fig. 2.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail:
As Fig. 1, shown in Fig. 2 and Fig. 3, low-rotating speed vane pump described in the utility model comprises rotor 6, stator 7 and blade 4, multiple blades 4 are installed on respectively multiple grooves of rotor 6 excircles (because being filled by blade 4 and sheet stage clip 5, so unmarked in figure) in, the surface of internal cavity of stator 7 at circumferencial direction by three major axis curved surfaces 71 and three alternate being formed by connecting of minor axis curved surface 72, sheet stage clip 5 is installed between the bottom of the bottom in groove and blade 4, the bottom of blade 4 is provided with " U " shape groove (unmarked in figure), two groove angles of " U " shape groove are withstood respectively at the two ends of sheet stage clip 5, the spring energy of sheet stage clip 5 guarantees to make the top of blade 4 to be adjacent on the major axis curved surface 71 of inner chamber of stator 7, correspondingly, also can guarantee to make the top of blade 4 to be adjacent on the minor axis curved surface 72 of inner chamber of stator 7.
As shown in Figure 1, between the left end of stator 7 and left end cap 1, exterior seal ring 3 is all installed between the right-hand member of stator 7 and right end cap 8, between the left end of rotor 6 and left end cap 1, inner seal ring 2 is all installed between the right-hand member of rotor 6 and right end cap 8, between the left end of stator 7 and left end cap 1, be all connected by hollow tapped locating stud 9 between the right-hand member of stator 7 and right end cap 8.
In Fig. 2, also show the internal spline 10 of the surface of internal cavity of rotor 6, internal spline 10, for coordinating with the external splines of line shaft (not shown), drives rotor 6 to rotate thereby realize line shaft.
As required, the surface of the surface of internal cavity of stator 7, blade 4 and the surface of rotor 6 all can spray the coating of different coefficients of friction and hardness, thereby effectively reduce kinematic friction coefficient, improve reliability and the pump oil efficiency of product.
As shown in Figure 1, Figure 2 and Figure 3, when the work of this low-rotating speed vane pump, the rotor 6 of being built with flower in band by the line shaft with external splines coordinates, realizing by line shaft drives rotor 6 to rotate, exerted pressure to blade 4 by the sheet stage clip 5 in rotor 6, the top of blade 4 is close on the inner chamber curved surface of stator 7 and rotatablely moves.Oil suction while entering major axis curved surface 71 from minor axis curved surface 72; In the time that major axis curved surface 71 enters minor axis curved surface 72, pump pressure oil, so circulation, reaches object normal, that continue to provide pressure oil.
Above-described embodiment is preferred embodiment of the present utility model, is not the restriction to technical solutions of the utility model, such as: sheet stage clip 5 also can adopt spirality stage clip, and multiple side by side in the groove of rotor 6; The inner chamber curved surface of stator 7 also can adopt four major axis curved surfaces 71 and four minor axis curved surfaces 72; As long as the technological scheme that can realize on the basis of above-described embodiment without creative work, all should be considered as falling within the scope of the rights protection of the utility model patent.
Claims (5)
1. a low-rotating speed vane pump, comprise rotor, stator and blade, multiple described blades are installed on respectively in multiple grooves in described rotor outer circle week, the surface of internal cavity of described stator is formed by connecting by major axis curved surface is alternate with minor axis curved surface at circumferencial direction, it is characterized in that: between the bottom in described groove and the bottom of described blade, stage clip is installed, the spring energy of described stage clip guarantees to make the top of described blade to be adjacent on the major axis curved surface of described bore of stator.
2. low-rotating speed vane pump according to claim 1, is characterized in that: described stage clip is sheet stage clip, and the bottom of described blade is provided with " U " shape groove, and two groove angles of described " U " shape groove are withstood respectively at the two ends of described sheet stage clip.
3. low-rotating speed vane pump according to claim 1 and 2, is characterized in that: the surface of internal cavity of described stator at circumferencial direction by three major axis curved surfaces and three alternate being formed by connecting of minor axis curved surface.
4. low-rotating speed vane pump according to claim 1 and 2, is characterized in that: between the two ends of described stator and two end caps, be separately installed with exterior seal ring, between the two ends of described rotor and two end caps, be separately installed with inner seal ring.
5. low-rotating speed vane pump according to claim 1 and 2, is characterized in that: between the two ends of described stator and two end caps, be connected respectively by hollow tapped locating stud.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420187617.4U CN203856716U (en) | 2014-04-17 | 2014-04-17 | Low-rotating-speed vane pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420187617.4U CN203856716U (en) | 2014-04-17 | 2014-04-17 | Low-rotating-speed vane pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203856716U true CN203856716U (en) | 2014-10-01 |
Family
ID=51606571
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420187617.4U Expired - Fee Related CN203856716U (en) | 2014-04-17 | 2014-04-17 | Low-rotating-speed vane pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203856716U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111120300A (en) * | 2018-10-31 | 2020-05-08 | 中石化石油工程技术服务有限公司 | Hydraulic pump for downhole tool for drilling |
-
2014
- 2014-04-17 CN CN201420187617.4U patent/CN203856716U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111120300A (en) * | 2018-10-31 | 2020-05-08 | 中石化石油工程技术服务有限公司 | Hydraulic pump for downhole tool for drilling |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141001 Termination date: 20160417 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |