CN219711787U - Low pressure pulsation vane pump - Google Patents
Low pressure pulsation vane pump Download PDFInfo
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- CN219711787U CN219711787U CN202320752010.5U CN202320752010U CN219711787U CN 219711787 U CN219711787 U CN 219711787U CN 202320752010 U CN202320752010 U CN 202320752010U CN 219711787 U CN219711787 U CN 219711787U
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- oil
- pump body
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- 230000010349 pulsation Effects 0.000 title abstract description 22
- 230000000149 penetrating effect Effects 0.000 claims abstract description 10
- 230000000541 pulsatile effect Effects 0.000 claims description 7
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- 238000009826 distribution Methods 0.000 claims description 2
- 241001481833 Coryphaena hippurus Species 0.000 abstract description 4
- 239000003921 oil Substances 0.000 description 36
- 238000010030 laminating Methods 0.000 description 3
- 239000010705 motor oil Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
Landscapes
- Details And Applications Of Rotary Liquid Pumps (AREA)
- Rotary Pumps (AREA)
Abstract
The utility model discloses a low pressure pulsation vane pump, comprising: the pump body, the oil outlet chamber has been seted up to the inner wall of the pump body, the oil inlet chamber has been seted up to the inner wall of the pump body, the outer wall in oil outlet chamber is connected with the off-load groove in a penetrating way, the multiunit oil groove has been seted up to the outer wall of rotor, the inner wall sliding connection of oil groove has first blade, the inner wall sliding connection of oil groove has the second blade, and forms between first blade and the second blade and build the pressure chamber. According to the utility model, the first blade, the second blade, the pump body, the pump cover, the rotor and the sliding block are arranged to form the pressure building cavity, the long and thin unloading groove in the shape of the dolphin nozzle is added at the oil outlet cavity, so that the oil outlet cavity and the pressure building cavity are communicated in advance, the pressure of the oil outlet cavity and the pressure building cavity is balanced, the pressure difference between the two cavities is reduced, the pressure pulsation of the oil pump is reduced, NVH noise is reduced, and the non-uniform rotor blade design is adopted to disperse the order frequency and amplitude of the blades and reduce the NVH noise caused by the pressure pulsation.
Description
Technical Field
The utility model relates to the technical field of vane pumps, in particular to a vane pump with low pressure pulsation.
Background
The vane pump is a pump which is characterized in that vanes in a rotor groove are contacted with a pump shell (a stator ring) and the sucked liquid is pressed to an oil discharge side from an oil inlet side, and the vane pump can be divided into a vane type variable pump and a vane type constant displacement pump according to whether the theoretical displacement of each rotation of the vane pump is a fixed value or a variable value. However, the vane pump in the current market has the problem that the pressure pulsation of engine oil is more or less large, the problem of the large pulsation can bring about the problem of engine noise, influence the noise level of an engine or the whole body, bring about the problem of NVH and finally influence the comfort level of a whole vehicle customer.
The existing vane pump has the following defects:
patent document CN210799351U discloses a vane pump, the protective rights "comprising: a pump housing (1), and a stator (2), a rotor (3) and an oil distribution disc (4) accommodated in the pump housing; wherein the rotor includes a rotor core (31), a plurality of blade grooves (32) which are spaced apart in a circumferential direction of the rotor core and extend in a radial direction of the rotor core, and a plurality of rotor blades (33) which are respectively provided in the plurality of blade grooves. However, the vane pump proposed in the above patent document is not convenient for reducing the engine oil pressure pulsation, and is prone to cause the problem of engine noise.
Disclosure of Invention
The utility model aims to provide a low-pressure pulsation vane pump, which aims to solve the technical problems that the engine noise problem and NVH (noise vibration noise) problem are caused by the inconvenient reduction of the engine oil pressure of the conventional vane pump in the background technology, and finally the comfort of a whole vehicle customer is influenced.
In order to achieve the above purpose, the present utility model provides the following technical solutions: a low pressure pulsatile vane pump comprising:
the inner wall of the pump body is provided with an oil outlet cavity;
an oil inlet cavity is formed in the inner wall of the pump body;
the unloading groove is formed in the outer wall of the oil outlet cavity in a penetrating mode, the sliding block is fixedly mounted on the inner wall of the pump body, the rotor is fixedly connected with the outer wall of the rotating shaft, a plurality of groups of oil grooves are formed in the outer wall of the rotor, the inner wall of each oil groove is slidably connected with a first blade, a wear-resistant coating is arranged on the outer wall of each first blade, a second blade is slidably connected with the inner wall of each oil groove, a pressure build cavity is formed between each first blade and each second blade, and blades are distributed in a non-uniform angle mode on the inner walls of the plurality of groups of oil grooves.
Preferably, the outer wall of the pump body is provided with a shaft hole in a penetrating way.
Preferably, the inner wall of the shaft hole is provided with a rotating shaft in a penetrating way.
Preferably, the connecting block is fixedly arranged on the outer wall of the pump body.
Preferably, the outer wall of the connecting block is provided with a connecting bolt in a penetrating way.
Preferably, the outer wall of the pump body is fixedly connected with a pump cover.
Compared with the prior art, the utility model has the beneficial effects that:
1. according to the utility model, the unloading groove, the first blade and the second blade are arranged, the first blade, the second blade, the pump body, the pump cover, the rotor and the sliding block are enclosed to form the pressure building cavity, the long and thin unloading groove in the shape of a dolphin nozzle is added at the oil outlet cavity, so that the oil outlet cavity and the pressure building cavity are communicated in advance, the pressure of the oil outlet cavity and the pressure building cavity is balanced, the pressure difference between the two cavities is reduced, the pressure pulsation of the oil pump is reduced by 50%, and NVH noise is reduced;
2. according to the utility model, by arranging the non-uniformly distributed rotor set design, the order frequency and the amplitude of seven sets of blades are dispersed, and the included angles among the non-uniformly distributed rotor blades are different (or at least 5 sets of angles are different, the minimum angle is 45 degrees and the maximum angle is 58 degrees), so that the pressure pulsation is reduced by about 20%, and the NVH noise caused by the pressure pulsation is reduced.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a pump body of the present utility model;
FIG. 2 is a schematic diagram of an unloading slot structure of the present utility model;
FIG. 3 is a schematic view of a pump cover portion of the present utility model;
fig. 4 is a schematic view of a first blade section of the present utility model.
In the figure: 1. a pump body; 2. an oil inlet cavity; 3. an oil outlet cavity; 4. a shaft hole; 5. an unloading groove; 6. a rotating shaft; 7. a rotor; 8. an oil groove; 9. a first blade; 10. a slide block; 11. a second blade; 12. a wear-resistant coating; 13. a connecting block; 14. a pump cover; 15. and (5) connecting bolts.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific direction, be configured and operated in the specific direction, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "provided," "connected," and the like are to be construed broadly, and may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
Referring to fig. 1, 2 and 3, a low pressure pulsation vane pump includes: the pump body 1, the shaft hole 4 has been seted up in the center department of pump body 1 in the penetration of the outer wall of pump body 1, shaft hole 4's inner wall runs through and installs pivot 6, and the outer wall of pivot 6 is laminated with the inner wall in shaft hole 4, the outer wall fixed mounting of pump body 1 has connecting block 13, and the installation group number of connecting block 13 is a plurality of groups, the outer wall fixedly connected with pump cover 14 of pump body 1, the right side outer wall of pump cover 14 and the laminating of the left side outer wall of pump body 1, the outer wall fixed mounting of pump cover 14 has connecting block 13, and with the laminating of the connecting block 13 outer wall of the fixed setting of pump cover 14, connecting bolt 15 is installed in the penetration of the outer wall of connecting block 13, run through two sets of connecting blocks 13 of laminating each other through setting up connecting bolt 15, be convenient for with pump body 1 and pump cover 14 fixed connection.
Referring to fig. 1, 2 and 4, an oil outlet cavity 3 is formed in the inner wall of a pump body 1, the oil outlet cavity 3 is located at the left side of a shaft hole 4, an oil inlet cavity 2 is formed in the inner wall of the pump body 1, the oil inlet cavity 2 is located at the right side of the shaft hole 4, an unloading groove 5 is connected to the outer wall of the oil outlet cavity 3 in a penetrating manner, the unloading groove 5 is formed in the inner wall of the pump body 1, the unloading groove 5 is a dolphin-shaped slender unloading groove 5, the unloading groove 5 can be directly formed through high-pressure casting of the pump body 1/a pump cover 14, different special processes are carried out, the left side outer wall of the unloading groove 5 is connected to the right side outer wall of the oil outlet cavity 3 in a penetrating manner, the bottom of the unloading groove 5 is a plane or an inclined plane, the inclined plane angle is 0-10 DEG, the angle length of the unloading groove 5 is 0.2B0.4B, the width of the unloading groove 5 is 0.2W0.4W, the height of the unloading groove 5 is 0.555mmh 2mm, the inner wall of the pump body 1 is fixedly provided with a sliding block 10, the sliding block 10 is in a circular shape, the sliding block 10 is located at different positions with the shaft hole 4, the outer wall of the rotating shaft 6 is fixedly connected with a rotor 7, a plurality of groups of oil grooves 8 are formed in the outer wall of the rotor 7, the oil grooves 8 are annularly distributed along the axis of the rotating shaft 6, the inner wall of the oil groove 8 is slidably connected with a first blade 9, the outer wall of the first blade 9 is provided with a wear-resistant coating 12, the inner wall of the oil groove 8 is slidably connected with a second blade 11, the second blade 11 is positioned on the right side of one blade of the second blade, the inner walls of the groups of oil grooves 8 are slidably connected with blades, the plurality of groups of blades are unevenly distributed to disperse the order frequency and amplitude of seven groups of blades, the plurality of groups of blades are unevenly distributed along the first blade 9, the included angles between the adjacent blades are 54.2 DEG, 53 DEG, 51 DEG, 49.5 DEG, 49 DEG, 50.8 DEG and 52.5 DEG (or the included angles between at least 5 adjacent blades are different in size, the minimum 45 DEG, the maximum 58 DEG), the seven groups of blades are unevenly distributed, the pressure pulsation is further reduced by about 20%, NVH noise caused by the pressure pulsation is reduced, the included angle between the first blade 9 and the second blade 11 is the largest in value, the first blade 9, the second blade 11, the pump body 1, the pump cover 14, the rotor 7 and the sliding block 10 enclose a pressure building cavity, the oil outlet cavity 3 is communicated with the pressure building cavity in advance by adding the long and thin unloading groove 5 in the shape of a dolphin nozzle at the oil outlet cavity 3, so that the pressure of the oil outlet cavity 3 and the pressure building cavity is balanced, the pressure difference between the two cavities is reduced, the pressure pulsation can be reduced by about 50%, the pressure pulsation of the oil pump is finally reduced, and the NVH noise problem is reduced.
When the low-pressure pulsation vane pump is used, the long and thin unloading groove 5 in the shape of the dolphin nozzle is added at the oil outlet cavity 3, so that the oil outlet cavity 3 is communicated with the pressure building cavity in advance, the pressure of the oil outlet cavity 3 and the pressure building cavity is balanced, the pressure difference between the two cavities is reduced, the pressure pulsation of the oil pump is finally reduced, the NVH noise problem is solved, seven groups of vanes are unevenly distributed, the pressure pulsation is further reduced by about 20%, the NVH noise caused by the pressure pulsation is reduced, the structure is simple, the processing and the manufacturing are convenient, and the cost is low.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (6)
1. A low pressure pulsatile vane pump comprising:
the pump comprises a pump body (1), wherein an oil outlet cavity (3) is formed in the inner wall of the pump body (1);
an oil inlet cavity (2), wherein the inner wall of the pump body (1) is provided with the oil inlet cavity (2);
unloading groove (5), the outer wall through connection of play oil cavity (3) has unloading groove (5), the inner wall fixed mounting of pump body (1) has slider (10), the outer wall fixedly connected with rotor (7) of pivot (6), multiunit oil groove (8) have been seted up to the outer wall of rotor (7), the inner wall sliding connection of oil groove (8) has first blade (9), the outer wall of first blade (9) is provided with wear-resisting coating (12), the inner wall sliding connection of oil groove (8) has second blade (11), and forms between first blade (9) and second blade (11) and build the pressure chamber, multiunit oil groove (8) inner wall all is provided with the blade, and the inhomogeneous angle distribution of blade.
2. A low pressure pulsatile vane pump as claimed in claim 1 and wherein: the outer wall of the pump body (1) is provided with a shaft hole (4) in a penetrating way.
3. A low pressure pulsatile vane pump as claimed in claim 2 and wherein: the inner wall of the shaft hole (4) is provided with a rotating shaft (6) in a penetrating way.
4. A low pressure pulsatile vane pump as claimed in claim 1 and wherein: the outer wall of the pump body (1) is fixedly provided with a connecting block (13).
5. A low pressure pulsatile vane pump of claim 4 and wherein: the outer wall of the connecting block (13) is provided with a connecting bolt (15) in a penetrating way.
6. A low pressure pulsatile vane pump as claimed in claim 1 and wherein: the outer wall of the pump body (1) is fixedly connected with a pump cover (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320752010.5U CN219711787U (en) | 2023-04-07 | 2023-04-07 | Low pressure pulsation vane pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320752010.5U CN219711787U (en) | 2023-04-07 | 2023-04-07 | Low pressure pulsation vane pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219711787U true CN219711787U (en) | 2023-09-19 |
Family
ID=87979347
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320752010.5U Active CN219711787U (en) | 2023-04-07 | 2023-04-07 | Low pressure pulsation vane pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219711787U (en) |
-
2023
- 2023-04-07 CN CN202320752010.5U patent/CN219711787U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: No. 33 Longzi Road, Wujin National High tech Industrial Development Zone, Changzhou City, Jiangsu Province, 213100 Patentee after: Dechang Drive Technology (Changzhou) Co.,Ltd. Country or region after: China Address before: No. 33, Longzi Road, Wujin District, Changzhou City, Jiangsu Province, 213166 Patentee before: Shiteke fluid power system (Changzhou) Co.,Ltd. Country or region before: China |
|
| CP03 | Change of name, title or address |