CN211874727U - Vane pump rotor adopting toothed rotating shaft hole - Google Patents
Vane pump rotor adopting toothed rotating shaft hole Download PDFInfo
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- CN211874727U CN211874727U CN202020206204.1U CN202020206204U CN211874727U CN 211874727 U CN211874727 U CN 211874727U CN 202020206204 U CN202020206204 U CN 202020206204U CN 211874727 U CN211874727 U CN 211874727U
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- vane pump
- pump rotor
- rotating shaft
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Abstract
The utility model relates to the technical field of machinery. The vane pump rotor adopting the tooth-shaped rotating shaft hole comprises a vane pump rotor main body, wherein a vane groove is formed in the outer circumference of the vane pump rotor main body, and the vane pump rotor main body comprises an inner ring part, a middle ring part and an outer ring part which are sequentially arranged from inside to outside in the radial direction; the axial length of the outer ring part is greater than that of the inner ring part, and the axial length of the inner ring part is greater than that of the middle ring part; the two ends of the outer ring part in the axial direction exceed the two ends of the middle ring part in the axial direction; one axial end of the inner ring part is flush with the end face of the middle ring part, and the other axial end of the inner ring part protrudes out of the end face of the outer ring part; the pivot hole is seted up in interior ring portion, and the inboard in pivot hole is equipped with the dentate processes of circumference arrangement. This patent has avoided interference fit's the difficult problem of dismantling, has also avoided the easy problem of losing of key simultaneously. In addition, when being convenient for guarantee oil mass accommodation space, guarantee and the pivot between the joint strength.
Description
Technical Field
The utility model relates to the technical field of machinery, specifically a vane pump rotor.
Background
The vane pump is a pump in which vanes in a rotor groove are in contact with a pump casing (stator ring) to press sucked liquid from an oil inlet side to an oil discharge side.
A rotating shaft hole of a rotor of the existing vane pump penetrates through a rotating shaft, and then the transmission of the rotating shaft to the rotor is realized. The transmission of the existing rotating shaft and the rotor is usually realized by matching or interference fit connection of a key and a key groove.
1) The mode cooperation of adopting key and keyway leads to easily that this finding of key is when carrying out impeller pump dismouting maintenance, tears the back open, loses easily. Keys and keyways are prone to produce a notching effect, affecting the load-bearing capacity and service life of the workpiece.
2) The interference fit connection needs a large external force due to the fact that the interference connection is disassembled, the matching surfaces of parts in the connection are often damaged, and the blade pump is inconvenient to assemble, disassemble and maintain.
To above-mentioned problem, chinese patent with application number CN201620965181.6, a variable vane pump rotor, it includes columniform rotor body, rotor body's center is run through there is the centre bore, the inner wall end lower extreme of centre bore is equipped with the internal spline, rotor body's top surface be equipped with the coaxial annular groove of centre bore, rotor body's lateral wall centrosymmetric ground is provided with two sets of blade installation groove groups, every group the blade installation groove group comprises at least three blade mounting groove, two be equipped with the arc shrinkage pool between the blade installation groove group. Although this patent discloses the form that adopts internal spline, has avoided the defect of key and keyway cooperation mode and interference fit mode, the axial length of this patent rotor body and the radial outside axial length of rotor body of the centre bore of pivot contact department is far less than, is unfavorable for guaranteeing the intensity of centre bore department.
SUMMERY OF THE UTILITY MODEL
Problem to prior art existence, the utility model provides an adopt vane pump rotor in cusp pivot hole to at least one technical problem more than solving.
In order to achieve the above object, the present invention provides a vane pump rotor using a tooth-shaped rotating shaft hole, comprising a vane pump rotor main body, wherein a vane groove is formed on the outer circumference of the vane pump rotor main body, and a rotating shaft hole is formed on the vane pump rotor main body;
the axial length of the outer ring part is greater than that of the inner ring part, and the axial length of the inner ring part is greater than that of the middle ring part;
the two ends of the outer ring part in the axial direction exceed the two ends of the middle ring part in the axial direction;
one axial end of the inner ring part is flush with the end face of the middle ring part, and the other axial end of the inner ring part protrudes out of the end face of the outer ring part;
the rotating shaft hole is formed in the inner ring portion, the inner side of the rotating shaft hole is provided with tooth-shaped protrusions which are circumferentially arranged, and the cross section of each tooth-shaped protrusion is arc-shaped.
This patent is through optimizing the structure of impeller pump rotor, and the inboard through the pivot hole is equipped with dentate protrudingly, and the later stage of being convenient for is connected with the pivot transmission, and the downthehole dentate between dentate protrudingly of pivot cooperatees with the dentate in the pivot outside, has avoided interference fit's the difficult problem of dismantling, has also avoided the easy problem of losing of key simultaneously. In addition, this patent divide into the different interior ring portion of axial length, middle ring portion and outer ring portion with traditional impeller pump, when being convenient for guarantee the oil mass accommodation space, guarantee and the pivot between joint strength.
Further preferably, the outer wall of the outer ring part is provided with a weight reduction groove.
The reduction of inertia when the rotor rotates is facilitated.
Further preferably, the number of the blade grooves is 7, and the 7 blade grooves are arranged clockwise at an interval angle of 51.4 degrees;
the interval angle of the head and the tail of the 7 clockwise-arranged blade grooves is 51.6 degrees;
and a circular hole is formed in the area, located between the two blade grooves with the interval angle of 51.6 degrees, of the inner ring part.
The weight reduction of the area between the two blade grooves with the interval angle of 51.6 degrees is realized through the circular holes, and the balance of the rotor in the operation process is realized.
Further preferably, the outer wall of the vane pump rotor body is coated with a teflon coating. This patent has the teflon coating through the peripheral cladding with the impeller pump rotor main part of traditional metal material, and the teflon coating has high temperature resistance's characteristics, and its coefficient of friction is extremely low, so can do the lubrication action in addition, can also realize the outsourcing protection to the impeller pump rotor. When the blade and the blade groove move relatively, a complete oil film can be formed better, and the continuity of the oil film is improved. Therefore, the abrasion between the vanes and the vane grooves is reduced, and the overall noise of the oil pump is greatly reduced.
Further preferably, an oil hole having an axial direction parallel to the axial direction of the vane pump rotor is opened in an inner wall of the vane groove, and the oil hole is provided at an outer end portion of the intermediate ring portion.
The oil storage capacity is increased through the arrangement of the oil hole, and the lubrication on the surface of the blade during the relative motion of the blade and the blade groove is increased.
Drawings
Fig. 1 is a schematic structural diagram of embodiment 1 of the present invention;
fig. 2 is a cross-sectional view of embodiment 1 of the present invention;
fig. 3 is a side view of embodiment 1 of the present invention;
fig. 4 is a schematic partial structure diagram of embodiment 2 of the present invention;
fig. 5 is a cross-sectional view of embodiment 3 of the present invention.
Wherein: the structure comprises a blade groove 2, a weight reduction groove 3, an oil hole 4, a circular hole 5, a limiting block 6, a limiting extending part 7, an inner ring part 11, a middle ring part 12 and an outer ring part 13.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
In embodiment 1, referring to fig. 1 to 3, a vane pump rotor using a tooth-shaped rotating shaft hole includes a vane pump rotor main body, a vane groove 2 is formed on an outer circumference of the vane pump rotor main body, a rotating shaft hole is formed on the vane pump rotor main body, and the vane pump rotor main body includes an inner ring portion 11, an intermediate ring portion 12, and an outer ring portion 13, which are sequentially arranged from inside to outside in a radial direction; the axial length of the outer ring part 13 is greater than that of the inner ring part 11, and the axial length of the inner ring part 11 is greater than that of the middle ring part 12; the two ends of the outer ring part 13 in the axial direction exceed the two ends of the middle ring part 12 in the axial direction; one axial end of the inner ring part 11 is flush with the end surface of the middle ring part 12, and the other axial end of the inner ring part 11 protrudes out of the end surface of the outer ring part 13; the rotating shaft hole is formed in the inner ring portion 11, the inner side of the rotating shaft hole is provided with tooth-shaped protrusions which are circumferentially arranged, and the sections of the tooth-shaped protrusions are arc-shaped. This patent is through optimizing the structure of impeller pump rotor, and the inboard through the pivot hole is equipped with dentate protrudingly, and the later stage of being convenient for is connected with the pivot transmission, and the downthehole dentate between dentate protrudingly of pivot cooperatees with the dentate in the pivot outside, has avoided interference fit's the difficult problem of dismantling, has also avoided the easy problem of losing of key simultaneously. In addition, this patent divide into the different interior ring portion 11 of axial length, middle ring portion 12 and outer ring portion 13 with traditional vane pump, when being convenient for guarantee the oil mass accommodation space, guarantee and the pivot between the joint strength. The difference of the axial length of the inner ring part and the axial length of the outer ring part is not more than 3 mm. The difference value of the circumferential length of the outer ring part and the circumferential length of the middle ring part is 4-6 mm. The outer diameter of the outer ring part is 39mm-42 mm.
The number of the blade grooves is 7, and the 7 blade grooves are arranged clockwise at an interval angle of 51.4 degrees; the interval angle of the head and the tail of the 7 clockwise-arranged blade grooves is 51.6 degrees; and a circular hole 5 is arranged on the inner ring part in the area between the two blade grooves with the interval angle of 51.6 degrees. The weight reduction of the area between the two blade grooves with the interval angle of 51.6 degrees is realized through the circular holes, and the balance of the rotor in the operation process is realized.
The vane groove 2 is formed by connecting a circular hole and a rectangular hole. The outer diameter of the vane pump rotor was 39.4 mm. The distance from the center of the circular hole to the center of the vane pump rotor is 11.37 mm.
The number of the dentations is 19.
The outer wall of the rotor body of the vane pump is coated with a Teflon coating. This patent has the teflon coating through the peripheral cladding with the impeller pump rotor main part of traditional metal material, and the teflon coating has high temperature resistance's characteristics, and its coefficient of friction is extremely low, so can do the lubrication action in addition, can also realize the outsourcing protection to the impeller pump rotor. When the blade and the blade groove move relatively, a complete oil film can be formed better, and the continuity of the oil film is improved. Therefore, the abrasion between the vanes and the vane grooves is reduced, and the overall noise of the oil pump is greatly reduced. Preferably, the inner walls of the blade grooves are coated with a teflon coating.
Referring to fig. 4, in embodiment 2, on the basis of embodiment 1, a weight-reducing groove 3 is formed in an outer wall of the outer ring portion. The reduction of inertia when the rotor rotates is facilitated. An oil hole 4 which is axially parallel to the axial direction of the vane pump rotor is formed in the inner wall of the vane groove, and the oil hole 4 is formed in the outer end part of the middle ring part. The oil storage capacity is increased through the arrangement of the oil hole, and the lubrication on the surface of the blade during the relative motion of the blade and the blade groove is increased.
Referring to fig. 5, in embodiment 3, based on embodiment 1, the outer ring portion and the middle ring portion are integrally formed into an outer ring, and the inner ring portion is detachably connected to the outer ring. And a limiting block 6 for limiting the screwing depth of the threads is arranged at the shaft end of the inner ring part or the outer ring. The independent replacement of the parts is convenient to realize. The inner ring part is provided with a limiting extension part 7 which extends outwards in the radial direction. The limiting protrusion is detachably connected with the outer ring through a screw. The inner ring part and the outer ring can be in threaded detachable connection. The inner ring part and the outer ring can be axially connected in a sliding way. The inner ring portion and the outer ring are provided with strip-shaped grooves and strip-shaped bulges which are circumferentially distributed and matched with each other. The inner ring part can be formed by vertically splicing an upper semicircular ring and a lower semicircular ring. When the outer ring is sleeved in the inner ring part, the upper semicircular ring and the lower semicircular ring of the inner ring part are spliced.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.
Claims (5)
1. The vane pump rotor adopting the tooth-shaped rotating shaft hole comprises a vane pump rotor main body, wherein a vane groove is formed in the outer circumference of the vane pump rotor main body, and a rotating shaft hole is formed in the vane pump rotor main body;
the axial length of the outer ring part is greater than that of the inner ring part, and the axial length of the inner ring part is greater than that of the middle ring part;
the two ends of the outer ring part in the axial direction exceed the two ends of the middle ring part in the axial direction;
one axial end of the inner ring part is flush with the end face of the middle ring part, and the other axial end of the inner ring part protrudes out of the end face of the outer ring part;
the rotating shaft hole is formed in the inner ring portion, the inner side of the rotating shaft hole is provided with tooth-shaped protrusions which are circumferentially arranged, and the cross section of each tooth-shaped protrusion is arc-shaped.
2. The vane pump rotor using the toothed rotating shaft hole according to claim 1, wherein: and the outer wall of the outer ring part is provided with a weight reduction groove.
3. The vane pump rotor using the toothed rotating shaft hole according to claim 1, wherein: the number of the blade grooves is 7, and the 7 blade grooves are arranged clockwise at an interval angle of 51.4 degrees;
the interval angle of the head and the tail of the 7 clockwise-arranged blade grooves is 51.6 degrees;
and a circular hole is formed in the area, located between the two blade grooves with the interval angle of 51.6 degrees, of the inner ring part.
4. The vane pump rotor using the toothed rotating shaft hole according to claim 1, wherein: the outer wall of the rotor body of the vane pump is coated with a Teflon coating.
5. The vane pump rotor using the toothed rotating shaft hole according to claim 1, wherein: and the inner wall of the blade groove is provided with an oil hole which is axially parallel to the axial direction of the vane pump rotor, and the oil hole is arranged at the outer end part of the middle ring part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020206204.1U CN211874727U (en) | 2020-02-25 | 2020-02-25 | Vane pump rotor adopting toothed rotating shaft hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020206204.1U CN211874727U (en) | 2020-02-25 | 2020-02-25 | Vane pump rotor adopting toothed rotating shaft hole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211874727U true CN211874727U (en) | 2020-11-06 |
Family
ID=73253574
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020206204.1U Active CN211874727U (en) | 2020-02-25 | 2020-02-25 | Vane pump rotor adopting toothed rotating shaft hole |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211874727U (en) |
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2020
- 2020-02-25 CN CN202020206204.1U patent/CN211874727U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 200949 No. 1836 Luoning Road, Luojing Town, Baoshan District, Shanghai Patentee after: Shanghai Yineixi Machinery Manufacturing Co.,Ltd. Address before: 200949 No. 1015, xinchuansha Road, Luojing Town, Baoshan District, Shanghai Patentee before: YINEIXI MACHINERY MANUFACTURING CO.,LTD. |
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| CP03 | Change of name, title or address |