CN222228811U - Oil pump and compressor - Google Patents
Oil pump and compressor Download PDFInfo
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- CN222228811U CN222228811U CN202420949338.0U CN202420949338U CN222228811U CN 222228811 U CN222228811 U CN 222228811U CN 202420949338 U CN202420949338 U CN 202420949338U CN 222228811 U CN222228811 U CN 222228811U
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- 230000001105 regulatory effect Effects 0.000 claims abstract description 40
- 238000007789 sealing Methods 0.000 claims description 16
- 230000006835 compression Effects 0.000 abstract description 3
- 238000007906 compression Methods 0.000 abstract description 3
- 238000005457 optimization Methods 0.000 abstract description 3
- 239000000758 substrate Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
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Abstract
本申请提供一种油泵及压缩机，油泵包括泵体和调压组件：泵体包括进油管道、出油管道和油压调节腔，油压调节腔分别与进油管道和出油管道连通；调压组件包括阀芯、弹性件、垫片和固定组件；固定组件用于定位垫片，弹性件分别与阀芯和弹性件抵接，阀芯在第一位置和第二位置之间切换；其中，当阀芯在第一位置时，进油管道和出油管道连通；当阀芯在第二位置时，进油管道和出油管道断开。将油压调节腔分别与进油管道和出油管道连通，在油压调节腔内设置调压组件，当出油管道中的油压压力过大时，油液进入油压调节腔挤压调压组件，即通过调节弹簧的压缩量来调节流量和油压。本实施例中调节组件与油泵功能集成，从而具有灵活调节，成本优化，提高可靠性等优点。
The present application provides an oil pump and a compressor, the oil pump includes a pump body and a pressure regulating assembly: the pump body includes an oil inlet pipeline, an oil outlet pipeline and an oil pressure regulating chamber, the oil pressure regulating chamber is respectively connected to the oil inlet pipeline and the oil outlet pipeline; the pressure regulating assembly includes a valve core, an elastic member, a gasket and a fixing assembly; the fixing assembly is used to position the gasket, the elastic member abuts against the valve core and the elastic member respectively, and the valve core switches between a first position and a second position; wherein, when the valve core is in the first position, the oil inlet pipeline and the oil outlet pipeline are connected; when the valve core is in the second position, the oil inlet pipeline and the oil outlet pipeline are disconnected. The oil pressure regulating chamber is respectively connected to the oil inlet pipeline and the oil outlet pipeline, and a pressure regulating assembly is arranged in the oil pressure regulating chamber. When the oil pressure in the oil outlet pipeline is too large, the oil enters the oil pressure regulating chamber to squeeze the pressure regulating assembly, that is, the flow rate and oil pressure are adjusted by adjusting the compression amount of the spring. In this embodiment, the regulating assembly is integrated with the oil pump function, so it has the advantages of flexible adjustment, cost optimization, and improved reliability.
Description
Technical Field
The application relates to the technical field of oil pumps, in particular to an oil pump and a compressor.
Background
The oil pump is usually composed of a pump body, a driving device and a conveying pipeline, and the components such as a piston, an impeller or a screw rod in the pump body are moved by the power generated by a mechanical or electric device, so that negative pressure or positive pressure is generated, and the liquid is sucked or pushed out and conveyed to a target position.
However, in the prior art, the oil pump is generally designed as an oil pump with the oil pressure not being adjustable, and a set of independent pressure regulating device is needed to be added in order to ensure the normal operation of the unit. When a set of independent pressure regulating device is added, the first is complex in design and installation, the workload is increased in the installation process, the second is more parts and higher in cost, and the third is more leakage points, so that the risk of unclean system exists.
Therefore, it is necessary to design an oil pump that is highly integrated and flexible in adjustment.
Disclosure of utility model
The application provides an oil pump and a compressor, which have high integration level and flexible adjustment.
According to a first aspect of embodiments of the present specification, there is provided an oil pump comprising:
The pump body comprises an oil inlet pipeline, an oil outlet pipeline and an oil pressure regulating cavity, and the oil pressure regulating cavity is respectively communicated with the oil inlet pipeline and the oil outlet pipeline;
The pressure regulating assembly comprises a valve core, an elastic piece, a gasket and a fixing assembly, wherein the fixing assembly is used for positioning the gasket, the elastic piece is respectively abutted with the valve core and the elastic piece, and the valve core is switched between a first position and a second position;
When the valve core is at the first position, the oil inlet pipeline is communicated with the oil outlet pipeline, and when the valve core is at the second position, the oil inlet pipeline is disconnected from the oil outlet pipeline.
Further, the oil pressure adjusting cavity comprises a first cavity and a second cavity, the first cavity is communicated with the second cavity, the radial width of the first cavity is smaller than that of the second cavity, and the connecting end of the first cavity and the connecting end of the second cavity are provided with step surfaces.
Further, the valve core, the elastic piece, the gasket and the fixing component are sequentially arranged in the oil pressure adjusting cavity from inside to outside;
The oil inlet pipeline and the oil outlet pipeline are arranged on two sides of the oil pressure regulating cavity and are arranged in parallel relative to the oil pressure regulating cavity.
Further, the oil pressure adjusting cavity is provided with a low-pressure runner port connected with the oil inlet pipeline and a high-pressure runner port connected with the oil outlet pipeline, the low-pressure runner port is positioned on the inner wall of the second cavity, and the high-pressure runner port is positioned on the inner wall of the first cavity.
Further, the valve core includes a base, a first portion, and a second portion, the first portion and the second portion being symmetrically arranged about the base, a radial width of the base being greater than a radial width of the first chamber and less than a radial width of the second chamber;
Wherein when the spool is in the second position, the base abuts on the land.
Further, the radial width of the first portion is less than the radial width of the second chamber;
The shape of the second part is matched with that of the first chamber, a plurality of notches are formed in the side edge of the second part, and at least one notch faces the high-pressure runner port.
Further, the height of the notch is equal to the height of the first chamber.
Further, the fixing assembly comprises a rotating nut and an adjusting screw, one end of the rotating nut is accommodated in the oil pressure adjusting cavity and used for positioning the gasket, and the other end of the rotating nut is arranged outside the end part of the pump body and is in rotary connection with the rotating nut;
The rotating nut, the adjusting screw, the valve core and the elastic piece are coaxially arranged.
Further, the pump body further comprises a sealing plug, and the sealing plug is fixed on the rotating nut and is positioned outside the end part of the pump body;
the pump body also comprises a sealing element, and the sealing element is arranged between the rotating nut and the pump body.
According to a second aspect of embodiments of the present specification, there is provided a compressor comprising a main machine, a gear box, an oil tank and an oil pump as described in the first aspect, wherein one end of the pump body is in sealing connection with the gear box, and the other end of the pump body is connected with the oil tank.
The oil pressure regulating device has the advantages that the oil pressure regulating cavity is respectively communicated with the oil inlet pipeline and the oil outlet pipeline, the pressure regulating assembly is arranged in the oil pressure regulating cavity, and when the oil pressure in the oil outlet pipeline is overlarge, the oil enters the oil pressure regulating cavity to squeeze the pressure regulating assembly, namely, the flow and the oil pressure are regulated by regulating the compression amount of the spring. In the embodiment, the adjusting component is integrated with the oil pump function, so that the oil pump has the advantages of flexible adjustment, cost optimization, reliability improvement and the like.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the specification and together with the description, serve to explain the principles of the specification.
FIG. 1 is a schematic diagram of an oil pump according to an embodiment of the present application;
FIG. 2 is a partial cross-sectional view of an oil pump in an embodiment of the application;
Fig. 3 is a front view of a compressor in an embodiment of the present application.
Reference numerals illustrate:
100-oil pump, 200-main engine, 300-gear box and 400-oil tank;
10-a pump body, 11-an oil inlet pipeline, 12-an oil outlet pipeline, 131-a first chamber, 132-a second chamber, 133-a step surface, 134-a low-pressure flow channel port and 135-a high-pressure flow channel port;
20-pressure regulating assembly, 21-valve core, 211-base body, 212-first portion, 213-second portion, 22-elastic piece, 23-gasket, 24-rotating nut, 25-regulating screw, 26-sealing plug and 27-sealing piece.
Detailed Description
Referring to fig. 1-3, the present embodiment discloses an oil pump 100, the oil pump 100 includes a pump body 10 and a pressure regulating assembly 20, the pump body 10 includes an oil inlet pipe 11, an oil outlet pipe 12 and an oil pressure regulating cavity, the oil pressure regulating cavity is respectively communicated with the oil inlet pipe 11 and the oil outlet pipe 12, the pressure regulating assembly 20 is accommodated in the oil pressure regulating cavity and includes a valve core 21, an elastic member 22, a gasket 23 and a fixing assembly, the fixing assembly is used for positioning the gasket 23, the elastic member 22 is respectively abutted with the valve core 21 and the elastic member 22, and the valve core 21 is switched between a first position and a second position.
Wherein the oil inlet pipe 11 and the oil outlet pipe 12 are communicated when the spool 21 is in the first position, and the oil inlet pipe 11 and the oil outlet pipe 12 are disconnected when the spool 21 is in the second position. Thus, the oil pressure adjusting cavity is respectively communicated with the oil inlet pipeline 11 and the oil outlet pipeline 12, the pressure adjusting assembly 20 is arranged in the oil pressure adjusting cavity, and when the oil pressure in the oil outlet pipeline 12 is overlarge, the oil enters the oil pressure adjusting cavity to extrude the pressure adjusting assembly 20, namely, the flow and the oil pressure are adjusted by adjusting the compression amount of the spring. The adjusting component is functionally integrated with the oil pump 100 in the embodiment, so that the adjusting component has the advantages of flexible adjustment, cost optimization, reliability improvement and the like.
Specifically:
The oil pressure adjusting cavity comprises a first cavity 131 and a second cavity 132, the first cavity 131 and the second cavity 132 are communicated, the radial width of the first cavity 131 is smaller than that of the second cavity 132, and a step surface 133 is arranged at the connecting end of the first cavity 131 and the second cavity 132. In this embodiment, the valve core 21, the elastic member 22, the gasket 23 and the fixing assembly are sequentially disposed in the second chamber 132 from inside to outside.
Further, the oil inlet pipe 11 and the oil outlet pipe 12 are arranged at both sides of the oil pressure regulating cavity and are arranged in parallel with respect to the oil pressure regulating cavity, the oil pressure regulating cavity is provided with a low pressure flow passage 134 connected with the oil inlet pipe 11 and a high pressure flow passage 135 connected with the oil outlet pipe 12, the low pressure flow passage 134 is positioned at the inner wall of the second chamber 132, and the high pressure flow passage 135 is positioned at the inner wall of the first chamber 131. Specifically, two through grooves may be provided on the side wall of the pump body 10, one through groove communicating the high-pressure flow passage port 135 with the oil outlet pipe 12, and the other through groove communicating the low-pressure flow passage port 134 with the oil inlet pipe 11. Of course, in order to avoid the outflow of oil from the interior of the pump body 10 through the through-grooves, one side of the through-grooves is closed so that oil can only flow along the other side of the through-grooves, i.e., between the high-pressure flow passage ports 135, the oil outlet pipe 12, or the high-pressure flow passage ports 135.
The spool 21 includes a base 211, a first portion 212, and a second portion 213, the first portion 212 and the second portion 213 being symmetrically arranged about the base 211, the radial width of the base 211 being greater than the radial width of the first chamber 131 and less than the radial width of the second chamber 132. In this way, the substrate 211 can be flexibly adjusted within the second chamber 132 without entering the first chamber 131.
Wherein, when the valve core 21 is at the second position, the base 211 is abutted against the stepped surface 133. In this way, the substrate 211 is abutted against the step surface 133 to realize limiting, so that the second portion 213 is prevented from colliding with the bottom of the oil pressure adjusting cavity when extending and contracting, the service life of the oil pressure adjusting cavity is influenced, and the sealing performance between the second portion 213 and the first chamber 131 is further influenced.
In this embodiment, the radial width of the first portion 212 is less than the radial width of the second chamber 132. In this manner, it is ensured that the low pressure port 134 remains normally open when a gap exists between the first portion 212 and the second chamber 132.
Furthermore, the shape of the second portion 213 is adapted to the shape of the first chamber 131, and a plurality of notches (not shown) are provided at the side edges of the second portion 213, at least one of the notches being provided toward the high pressure fluid passage opening 135. In this way, the contact area between the high-pressure oil and the second portion 213 can be increased, so as to facilitate ejection of the second portion 213 from the first chamber 131. In addition, the plurality of notches are symmetrically arranged, so that the second portion 213 is uniformly stressed in the moving process and moves stably.
Preferably, the height of the notch is equal to the height of the first chamber 131. Thus, when the high-pressure oil presses the second portion 213, the high-pressure oil flows into the second chamber 132 through the gap when the second portion 213 initially moves upward, so that the oil pressure is removed, and the efficiency is high. Of course, the height of the notch may be smaller than that of the first chamber 131, so that the pressure corresponding to the required oil pressure increases, and the moving distance of the pushing second portion 213 needs to be increased, so that the high-pressure oil can flow into the second chamber 132 through the notch.
The fixed assembly comprises a rotating nut 24 and an adjusting screw 25, one end of the rotating nut 24 is accommodated in the oil pressure adjusting cavity and used for positioning a gasket 23, and the other end of the rotating nut 24 is arranged outside the end part of the pump body 10 and is in rotary connection with the rotating nut 24. Thus, by rotating the adjusting screw 25, the elastic member 22 pushing the end of the spacer 23 is pressed toward the valve core 21 or is moved away from the valve core 21, so as to change the elastic force between the valve core 21 and the elastic member 22 and change the oil pressure pushing the valve core 21.
In addition, in another possible manner, the fixing assembly may be directly fixed to the end of the pump body 10 and isolate the oil pressure adjusting chamber from the outside through the seal member 27, so as to simplify the structure of the oil pump.
The pump body 10 further includes a sealing plug 26, the sealing plug 26 being secured to the swivel nut 24 and located outside the end of the pump body 10. In this way, oil can be prevented from flowing out of the gap between the swivel nut 24 and the adjusting screw 25.
The swivel nut 24, the adjusting screw 25, the spool 21 and the elastic member 22 are coaxially arranged. Thus, the overall structure of the oil pump 100 can be made more compact, and the space utilization is high.
The pump body 10 further includes a seal 27, the seal 27 being disposed between the swivel nut 24 and the pump body 10. In this way, oil is prevented from leaking out of the swivel nut 24 and the pump body 10 by the seal 27. Wherein the seal 27 may be an O-ring seal.
In this embodiment, when the force of the oil outlet pipe 12 acting on the valve core 21 is greater than the force of the oil inlet pipe 11 acting on the valve core 21 and the spring force of the valve core 21, the valve core 21 moves upward, the oil outlet pipe 12 and the oil inlet pipe 11 are connected to start pressure relief, and part of the oil in the oil outlet pipe 12 flows to the oil inlet pipe 11, so that the pressure of the oil outlet pipe 12 is reduced. In addition, when the force of the oil from the oil outlet pipe 12 acting on the spool 21 is smaller than the force of the oil from the oil inlet pipe 11 acting on the spool 21 and the spring force on the spool 21, the spool 21 moves downward, the oil outlet pipe 12 and the oil inlet pipe 11 are not connected, and the oil pump 100 operates normally.
The embodiment also discloses a compressor, which comprises a main machine 200, a gear box 300, an oil tank 400 and the oil pump 100, wherein one end of the pump body 10 is in sealing connection with the gear box 300, and the other end is connected with the oil tank 400.
Specifically, a first gear shaft and a second gear shaft which are meshed with each other are further arranged in the pump body 10, wherein the first gear shaft is connected with a shaft of the main machine 200 through a taper hole, and further the first gear shaft and the second gear shaft are driven to rotate through the shaft rotation of the main machine 200, and teeth in the first gear shaft and the second gear shaft are continuously meshed and out of meshing. The volume of the oil discharge pipeline is reduced when the oil discharge pipeline is meshed, the volume of the oil inlet pipeline 11 is increased when the oil discharge pipeline is out of meshing, tooth tops on the first gear shaft and the second gear shaft, the pump body 10 and the end cover separate oil suction cavities, a plurality of independent movement volumes are arranged between the oil suction cavities, and the oil is ensured to finish leaving the oil suction cavities before entering the oil discharge cavities.
Claims (10)
1. An oil pump, characterized by comprising:
The pump body (10) comprises an oil inlet pipeline (11), an oil outlet pipeline (12) and an oil pressure regulating cavity, wherein the oil pressure regulating cavity is respectively communicated with the oil inlet pipeline (11) and the oil outlet pipeline (12);
The pressure regulating assembly (20) comprises a valve core (21), an elastic piece (22), a gasket (23) and a fixing assembly, wherein the fixing assembly is used for positioning the gasket (23), the elastic piece (22) is respectively abutted with the valve core (21) and the elastic piece (22), and the valve core (21) is switched between a first position and a second position;
When the valve core (21) is at a first position, the oil inlet pipeline (11) and the oil outlet pipeline (12) are communicated, and when the valve core (21) is at a second position, the oil inlet pipeline (11) and the oil outlet pipeline (12) are disconnected.
2. The oil pump according to claim 1, wherein,
The oil pressure adjusting cavity comprises a first cavity (131) and a second cavity (132), the first cavity (131) is communicated with the second cavity (132), the radial width of the first cavity (131) is smaller than that of the second cavity (132), and a step surface (133) is arranged at the connecting end of the first cavity (131) and the connecting end of the second cavity (132).
3. The oil pump according to claim 2, wherein,
The valve core (21), the elastic piece (22), the gasket (23) and the fixing component are sequentially arranged in the oil pressure adjusting cavity from inside to outside;
The oil inlet pipe (11) and the oil outlet pipe (12) are arranged on two sides of the oil pressure regulating cavity and are arranged in parallel with respect to the oil pressure regulating cavity.
4. The oil pump according to claim 2, wherein,
The oil pressure regulating cavity is provided with a low-pressure runner port (134) connected with the oil inlet pipeline (11) and a high-pressure runner port (135) connected with the oil outlet pipeline (12), the low-pressure runner port (134) is positioned on the inner wall of the second chamber (132), and the high-pressure runner port (135) is positioned on the inner wall of the first chamber (131).
5. The oil pump according to claim 2, wherein,
The valve spool (21) comprises a base body (211), a first portion (212) and a second portion (213), the first portion (212) and the second portion (213) being symmetrically arranged with respect to the base body (211), a radial width of the base body (211) being greater than a radial width of the first chamber (131) and less than a radial width of the second chamber (132);
Wherein when the valve element (21) is in the second position, the base body (211) is abutted against the stepped surface (133).
6. The oil pump according to claim 5, wherein,
The radial width of the first portion (212) is smaller than the radial width of the second chamber (132);
The shape of the second part (213) is matched with the shape of the first chamber (131), a plurality of notches are arranged on the side edge of the second part (213), and at least one notch is arranged towards the high-pressure pipeline opening (135).
7. The oil pump according to claim 6, wherein,
The height of the gap is equal to the height of the first chamber (131).
8. The oil pump according to claim 1, wherein,
The fixing assembly comprises a rotating nut (24) and an adjusting screw (25), one end of the rotating nut (24) is accommodated in the oil pressure adjusting cavity and used for positioning the gasket (23), and the other end of the rotating nut is arranged outside the end part of the pump body (10) and is in rotary connection with the rotating nut (24);
The rotating nut (24), the adjusting screw (25), the valve core (21) and the elastic piece (22) are coaxially arranged.
9. The oil pump of claim 8, wherein,
The pump body (10) further comprises a sealing plug (26), and the sealing plug (26) is fixed on the rotating nut (24) and is positioned outside the end part of the pump body (10);
The pump body (10) further comprises a sealing element (27), and the sealing element (27) is arranged between the rotating nut (24) and the pump body (10).
10. Compressor, characterized in that it comprises a main machine (200), a gearbox (300), an oil tank (400) and an oil pump according to any of the preceding claims 1-9, one end of the pump body (10) being in sealing connection with the gearbox (300) and the other end being connected with the oil tank (400).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420949338.0U CN222228811U (en) | 2024-04-30 | 2024-04-30 | Oil pump and compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420949338.0U CN222228811U (en) | 2024-04-30 | 2024-04-30 | Oil pump and compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN222228811U true CN222228811U (en) | 2024-12-24 |
Family
ID=93916619
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202420949338.0U Active CN222228811U (en) | 2024-04-30 | 2024-04-30 | Oil pump and compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN222228811U (en) |
-
2024
- 2024-04-30 CN CN202420949338.0U patent/CN222228811U/en active Active
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