CN213870261U - Variable displacement vane pump capable of suppressing interference - Google Patents
Variable displacement vane pump capable of suppressing interference Download PDFInfo
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- CN213870261U CN213870261U CN202023017995.2U CN202023017995U CN213870261U CN 213870261 U CN213870261 U CN 213870261U CN 202023017995 U CN202023017995 U CN 202023017995U CN 213870261 U CN213870261 U CN 213870261U
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Abstract
The utility model provides a variable displacement vane pump capable of suppressing interference, which comprises a pump body, a pump cover, a rotary pin, a variable slider and a variable spring, wherein one side of the variable slider is provided with a spring pressing block, the spring pressing block is provided with two side surfaces and an end surface, one side surface of the spring pressing block is contacted with the variable spring, a variable feedback cavity is formed between the other side surface and the inner wall surface of a cavity of the pump body, and a sealing element is arranged on the end surface of the spring pressing block; two sealing members are installed on the outer peripheral surface of the variable sliding block, a first balance cavity and a second balance cavity which are not communicated with each other are formed between the outer peripheral surface of the variable sliding block and the inner wall surface of the cavity of the pump body through the two sealing members, the first balance cavity and the second balance cavity are respectively arranged on two sides of the rotating pin and correspond to the oil outlet cavity of the pump body, a first oil drainage groove and a second oil drainage groove are formed in the end surface of the variable sliding block, the first oil drainage groove is used for communicating the rotor cavity with the first balance cavity, and the second oil drainage groove is used for communicating the rotor cavity with the second balance cavity.
Description
Technical Field
The utility model belongs to the technical field of variable displacement vane pump technique and specifically relates to indicate a variable displacement vane pump that can restrain interference.
Background
Variable displacement vane pumps have been widely used in engine lubrication systems as one type of oil pump. When the existing variable displacement vane pump faces the high-speed working condition of an engine, the temperature can rise along with the temperature, the dynamic viscosity of oil can be correspondingly reduced, at the moment, the oil is easy to leak to a variable feedback cavity from the end face gap of a variable sliding block, and then extra pressure is generated in the variable feedback cavity, so that a variable pressure point is interfered, and the vane pump generates a variable in advance.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a variable displacement vane pump that can restrain interference to above-mentioned problem.
In order to solve the technical problem, the utility model discloses a following technical scheme: a variable displacement vane pump capable of suppressing interference comprises a pump body, a pump cover, a rotating pin, a variable slider and a variable spring, wherein the variable slider is arranged in a cavity of the pump body and can swing left and right around the rotating pin, a rotor cavity for accommodating a rotor and a vane is arranged in the middle of the variable slider, a spring pressing block is arranged on one side of the variable slider and is provided with two side surfaces and an end surface, one side surface of the spring pressing block is contacted with the variable spring, a variable feedback cavity is formed between the other side surface of the spring pressing block and the inner wall surface of the cavity of the pump body, a sealing element is arranged on the end surface of the spring pressing block, two sealing elements are arranged on the outer peripheral surface of the variable slider, a first balance cavity and a second balance cavity which are not communicated with each other are formed between the outer peripheral surface of the variable slider and the inner wall surface of the cavity of the pump body by the two sealing elements, the first balance cavity and the second balance cavity are respectively arranged on two sides of the rotating pin and correspond to an oil outlet cavity of the pump body, and the end face of the variable sliding block is provided with a first oil drainage groove and a second oil drainage groove, the first oil drainage groove is used for communicating the rotor cavity with the first balance cavity, and the second oil drainage groove is used for communicating the rotor cavity with the second balance cavity.
Furthermore, an arc-shaped groove for communicating the first oil drainage groove with the second oil drainage groove is further formed in the variable sliding block.
Preferably, the cross sections of the first oil drainage groove and the second oil drainage groove are square or semicircular.
Preferably, the seal comprises a rectangular sealing strip and a rubber rod.
The utility model has the advantages that:
1) because a first balance cavity and a second balance cavity which are not communicated with each other are formed between the outer peripheral surface of the variable sliding block and the inner wall surface of the cavity of the pump body, oil in the oil outlet cavity of the pump body can enter the first balance cavity and the second balance cavity through the first oil drainage groove and the second oil drainage groove, and the oil in the rotor cavity cannot leak into the variable feedback cavity from the end surface of the variable sliding block;
2) because the first balance cavity and the second balance cavity are communicated with the oil outlet cavity, the volume of the oil outlet cavity is increased, so that the internal pressure of the pump cavity is reduced, and the oil outlet channel is easier to arrange;
3) the existence of the first balance cavity and the second balance cavity can balance the pressure generated by the pressure oil in the variable slider rotor cavity and the pressure generated by the periphery of the variable slider, so the influence of the pressure oil on the pressure in the variable slider rotor cavity is not needed to be considered when calculating the moment balance of the variable slider, and the interference factor is smaller.
Drawings
Fig. 1 is a schematic structural diagram of an oil pump in an embodiment of the present invention when the oil pump is not variable;
fig. 2 is a schematic structural diagram after the oil pump variables in the embodiment of the present invention;
the reference signs are:
1-pump body 2-rotary pin 3-variable slide block
4-variable spring 5-variable feedback cavity 6-first balance cavity
7-second balance cavity 31-spring press block 32-first oil drainage groove
33-second oil drainage groove 34-arc groove.
Detailed Description
In order to facilitate understanding of those skilled in the art, the present invention will be further described with reference to the following examples and drawings, which are not intended to limit the present invention.
It should be noted that, in the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
Furthermore, in the present disclosure, unless explicitly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature. The terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
As shown in fig. 1 and 2, a variable displacement vane pump capable of suppressing interference comprises a pump body 1, a pump cover, a rotary pin 2, a variable slider 3 and a variable spring 4, wherein the variable slider 3 is arranged in a cavity of the pump body 1 and can swing left and right around the rotary pin 2, a rotor cavity for accommodating a rotor and a vane is arranged in the middle of the variable slider 3, a spring pressing block 31 is arranged on one side of the variable slider 3, the spring pressing block 31 is provided with two side surfaces and one end surface, one side surface of the spring pressing block 31 is in contact with the variable spring 4, a variable feedback cavity 5 is formed between the other side surface and the inner wall surface of the cavity of the pump body, and a sealing element is arranged on the end surface of the spring pressing block 31; two sealing pieces are arranged on the peripheral surface of the variable sliding block 3, a first balance cavity 6 and a second balance cavity 7 which are not communicated with each other are formed between the peripheral surface of the variable sliding block 3 and the inner wall surface of the cavity of the pump body 1 through the two sealing pieces, and the first balance cavity 6 and the second balance cavity 7 are respectively arranged on two sides of the rotating pin 2 and correspond to the oil outlet cavity of the pump body; a first oil drainage groove 32, a second oil drainage groove 33 and an arc-shaped groove 34 for communicating the first oil drainage groove 32 with the second oil drainage groove 33 are formed in the end face of the variable sliding block 3, the first oil drainage groove 32 is used for communicating the rotor cavity with the first balance cavity 6, and the second oil drainage groove 33 is used for communicating the rotor cavity with the second balance cavity 7; the cross sections of the first oil drainage groove 32 and the second oil drainage groove 33 are square or semicircular; the seal in this embodiment comprises a rectangular seal strip and a rubber rod.
The above-mentioned embodiment is the utility model discloses the implementation scheme of preferred, in addition, the utility model discloses can also realize by other modes, any obvious replacement is all within the protection scope of the utility model under the prerequisite that does not deviate from this technical scheme design.
In order to make it easier for those skilled in the art to understand the improvement of the present invention over the prior art, some drawings and descriptions of the present invention have been simplified, and in order to clarify, some other elements have been omitted from this document, those skilled in the art should recognize that these omitted elements may also constitute the content of the present invention.
Claims (4)
1. The variable displacement vane pump capable of inhibiting interference comprises a pump body (1), a pump cover, a rotating pin (2), a variable slider (3) and a variable spring (4), wherein the variable slider (3) is arranged in a cavity of the pump body (1) and can swing left and right around the rotating pin (2), a rotor cavity for accommodating a rotor and a vane is arranged in the middle of the variable slider (3), a spring pressing block (31) is arranged on one side of the variable slider (3), the spring pressing block (31) is provided with two side surfaces and an end surface, one side surface of the spring pressing block (31) is in contact with the variable spring (4), a variable feedback cavity (5) is formed between the other side surface of the spring pressing block (31) and the inner wall surface of the cavity of the pump body, and a sealing element is installed on the end surface of the spring pressing block (31); the method is characterized in that: two sealing pieces are installed on the peripheral face of the variable sliding block (3), a first balance cavity (6) and a second balance cavity (7) which are not communicated with each other are formed between the peripheral face of the variable sliding block (3) and the inner wall face of a cavity of the pump body (1) through the two sealing pieces, the first balance cavity (6) and the second balance cavity (7) are respectively arranged on two sides of the rotating pin (2) and correspond to the oil outlet cavity of the pump body, a first oil drainage groove (32) and a second oil drainage groove (33) are formed in the end face of the variable sliding block (3), the first oil drainage groove (32) is used for communicating the rotor cavity with the first balance cavity (6), and the second oil drainage groove (33) is used for communicating the rotor cavity with the second balance cavity (7).
2. A disturbance-suppressible variable displacement vane pump as claimed in claim 1, wherein: and an arc-shaped groove (34) for communicating the first oil drainage groove (32) with the second oil drainage groove (33) is also arranged on the variable sliding block (3).
3. A disturbance-suppressible variable displacement vane pump according to claim 1 or 2, wherein: the cross sections of the first oil drainage groove (32) and the second oil drainage groove (33) are square or semicircular.
4. A disturbance-suppressible variable displacement vane pump according to claim 1 or 2, wherein: the sealing element comprises a rectangular sealing strip and a rubber rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023017995.2U CN213870261U (en) | 2020-12-16 | 2020-12-16 | Variable displacement vane pump capable of suppressing interference |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023017995.2U CN213870261U (en) | 2020-12-16 | 2020-12-16 | Variable displacement vane pump capable of suppressing interference |
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| Publication Number | Publication Date |
|---|---|
| CN213870261U true CN213870261U (en) | 2021-08-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023017995.2U Active CN213870261U (en) | 2020-12-16 | 2020-12-16 | Variable displacement vane pump capable of suppressing interference |
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| CN (1) | CN213870261U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115095519A (en) * | 2022-07-06 | 2022-09-23 | 湖南机油泵股份有限公司 | Swing type variable displacement oil pump |
-
2020
- 2020-12-16 CN CN202023017995.2U patent/CN213870261U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115095519A (en) * | 2022-07-06 | 2022-09-23 | 湖南机油泵股份有限公司 | Swing type variable displacement oil pump |
| CN115095519B (en) * | 2022-07-06 | 2024-04-16 | 湖南机油泵股份有限公司 | Oscillating variable displacement oil pump |
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