CN212456227U - Enhanced self-lubricating oil pump - Google Patents
Enhanced self-lubricating oil pump Download PDFInfo
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- CN212456227U CN212456227U CN202021095471.2U CN202021095471U CN212456227U CN 212456227 U CN212456227 U CN 212456227U CN 202021095471 U CN202021095471 U CN 202021095471U CN 212456227 U CN212456227 U CN 212456227U
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Abstract
The utility model discloses an enhancement mode self-lubricating oil pump, it relates to oil pump technical field, aim at solving among the prior art, the oil pump is at the during operation, easy wearing and tearing between external rotor and the casing, lead to the external rotor not hard up, influence the normal work of oil pump, lead to the lower problem of oil pump reliability, its technical scheme main points include the casing, the external rotor, inner rotor and transmission shaft, the transmission shaft sets up along the axis direction of inner rotor, the one end of transmission shaft stretches out the casing, the one end that the transmission shaft stretches out the casing is equipped with the driving gear, the one end that the casing is kept away from the driving gear is equipped with the closing cap, one side that the casing is close to the closing cap is equipped with first inlet port and first oil outlet respectively, be; therefore, the possibility of outer rotor looseness caused by gaps generated between the outer rotor and the shell is reduced, the possibility of abnormal working of the oil pump is reduced, and the reliability of the oil pump is improved.
Description
Technical Field
The utility model relates to an oil pump technical field, more specifically say, it relates to an enhancement mode self-lubricating oil pump.
Background
The equipment for supplying oil in the lubricating system of the oil pump is mainly used for forcibly conveying the oil to the friction surfaces of various parts of an engine after the oil is increased to a certain pressure so as to complete the supply of the oil, and is commonly used on an internal combustion engine.
Chinese patent with publication number CN201502858U discloses a cylindrical shaft transmission oil pump, which comprises a transmission shaft, an outer rotor, an inner rotor, a pump body, a pump cover and a transmission gear; the transmission shaft is cylindrical; the transmission shaft is arranged in the shaft holes of the pump body and the pump cover; the inner rotor is sleeved in the middle of the transmission shaft through a shaft hole on the inner rotor, and the shaft hole of the inner rotor is in interference fit with the transmission shaft; the transmission gear is sleeved at the outer end of the transmission shaft through a shaft hole on the transmission gear, and the shaft hole of the transmission gear is in interference fit with the transmission shaft.
When the oil pump is used, the transmission gear drives the transmission shaft to rotate, the transmission shaft drives the inner rotor to rotate, the inner rotor drives the outer rotor to rotate, the oil is supplied, but the outer rotor is directly contacted with the shell, the outer rotor and the outer surface of the shell rub in the using process, the outer surface of the outer rotor is abraded, a gap is formed between the outer rotor and the shell, the outer rotor is loosened, the normal work of the oil pump is influenced, and the reliability of the oil pump is reduced.
SUMMERY OF THE UTILITY MODEL
The utility model aims to the deficiencies that exist prior art, the utility model aims to provide an enhancement mode self-lubricating oil pump, its advantage lies in self-lubricating external rotor and casing, reduces the possibility of wearing and tearing each other between external rotor and the casing, reduces the not hard up possibility of external rotor, reduces the unable normal possibility of working of oil pump, improves the reliability of oil pump.
The above object of the present invention can be achieved by the following technical solutions:
the utility model provides an enhancement mode self-lubricating oil pump, includes the casing, rotates the outer rotor of connection in the casing, set up the inner rotor in the outer rotor and with inner rotor fixed connection's transmission shaft, the transmission shaft sets up along the axis direction of inner rotor, the casing is stretched out to the one end of transmission shaft, the one end that the casing was stretched out to the transmission shaft is equipped with the driving gear, the one end that the driving gear was kept away from to the casing is equipped with the closing cap, one side that the casing is close to the closing cap is equipped with first inlet port and first oil outlet respectively, be equipped with second inlet port and second oil outlet on the closing cap respectively, first oil outlet with the second oil outlet is linked together, first inlet port with the second inlet port is linked together, be equipped with the automatic lubricated subassembly of fuel feeding between to outer.
By adopting the technical scheme, when the engine oil pump works, the driving gear is driven to rotate, the driving gear drives the driving shaft to rotate, the driving shaft drives the inner rotor to rotate, the inner rotor drives the outer rotor to rotate, so that lubricating oil is sucked in through the second oil inlet and enters between the inner rotor and the outer rotor through the first oil inlet, the inner rotor is matched with the outer rotor, the lubricating oil is discharged through the first oil outlet, and the lubricating oil leaves the engine oil pump through the second oil outlet, so that the supply of the lubricating oil is completed; in the rotating process of the rotating shaft, the lubricating component automatically supplies lubricating oil between the outer rotor and the shell, so that the friction force between the outer rotor and the shell is reduced, the possibility of mutual abrasion between the outer rotor and the shell is reduced, the possibility of looseness of the outer rotor caused by gaps generated between the outer rotor and the shell is reduced, the possibility of abnormal work of the oil pump is reduced, and the reliability of the oil pump is improved.
Furthermore, the lubricating assembly comprises an extrusion plate arranged on the inner side wall of the shell, a return spring arranged on the extrusion plate and an oil supply pipe arranged in the shell, wherein an extrusion groove is formed in the inner side wall of the shell, the extrusion plate is connected in the extrusion groove in a sliding manner, and one end, far away from the extrusion plate, of the return spring is connected with the groove side wall of the extrusion groove;
the oil supply pipe penetrates through the extrusion groove, one section of the oil supply pipe extending into the extrusion groove is positioned between the extrusion plate and the groove bottom wall of the extrusion groove, one end of the oil supply pipe is communicated with the first oil outlet hole, and the other end of the oil supply pipe is communicated with the inner cavity of the shell;
one side of the extrusion plate, which is far away from the oil supply pipe, extends out of the extrusion groove, one side of the extrusion plate, which extends out of the extrusion groove, is provided with an extrusion surface, the outer side wall of the outer rotor is provided with a plurality of extrusion strips which are abutted against the extrusion surface, the side surface of each extrusion strip is connected with the inner side wall of the shell in a sliding manner, and the plurality of extrusion strips are uniformly distributed along the circumferential direction of the outer rotor.
Through adopting above-mentioned technical scheme, at the oil pump during operation, partly entering into in the oil feed pipe through the lubricating oil of first oil-out, the external rotor is when rotating, drive the extrusion strip and rotate, the extrusion strip contacts with the casing inboard, the extrusion strip offsets with the plane of extrusion when rotating, thereby promote the plane of extrusion, and then promote the stripper plate and stretch into the extrusion inslot, the stripper plate pulling reset spring takes place tensile deformation, the stripper plate extrudees the oil feed pipe, thereby extrude the lubricating oil in the oil feed pipe, thereby lubricating oil gets into external rotor and casing smoothly.
Furthermore, one side of the extrusion strip, which is far away from the outer rotor, is provided with a sliding arc surface, and a convex surface of the sliding arc surface is in contact with the inner side wall of the shell.
Through adopting above-mentioned technical scheme, the cambered surface that slides reduces the area of contact of extrusion strip and casing inside wall, reduces the possibility that takes place wearing and tearing between extrusion strip and the casing.
Furthermore, a plurality of branch pipes are arranged on the side surface of the oil supply pipe, and the branch pipes are communicated with the inner cavity of the shell.
Through adopting above-mentioned technical scheme, the branch pipe increases the area of intercommunication of fuel feeding pipe and casing inner chamber, is favorable to increasing the supply capacity of fuel feeding pipe.
Furthermore, the extrusion surface is arc-shaped, and the convex surface of the extrusion surface extends out of the extrusion groove.
Through adopting above-mentioned technical scheme, the arc is personally submitted in the extrusion, reduces and extrude the frictional force between the strip, makes things convenient for the extrusion strip to promote the stripper plate smoothly.
Further, one side of the extrusion plate, which is close to the oil supply pipe, is provided with an extrusion arc surface, and the concave surface of the extrusion arc surface is attached to the outer side wall of the oil supply pipe.
Through adopting above-mentioned technical scheme, the extrusion cambered surface increases the area of contact of stripper plate and fuel feed pipe, makes things convenient for the stripper plate extrusion to supply fuel feed pipe.
Furthermore, two connecting grooves for inserting the extrusion plates are arranged on the bottom wall of the extrusion groove, and the two connecting grooves are positioned on two sides of the oil supply pipe.
Through adopting above-mentioned technical scheme, when the extrusion board extrudeed the fuel feed pipe, insert in the spread groove to increase the compression degree of extrusion board to the fuel feed pipe.
Furthermore, a backflow hole is formed in the inner bottom wall of the shell and located between the outer rotor and the inner cavity of the shell, and the backflow hole is arranged close to one side of the sealing cover.
By adopting the technical scheme, when the lubricating oil is accumulated between the shell and the outer rotor, the lubricating oil flows into the backflow hole and leaves the inner cavity of the shell through the backflow hole, so that the possibility of accumulating the lubricating oil in the inner cavity of the shell is reduced.
Furthermore, sealing glue is filled between the sealing cover and the shell.
By adopting the technical scheme, the sealant fills the gap between the sealing cover and the shell, the sealing property between the sealing cover and the shell is improved, and the possibility of lubricating oil leakage is reduced.
To sum up, the utility model discloses following beneficial effect has:
1. when the oil pump works, the driving gear is driven to rotate, the transmission shaft drives the inner rotor to rotate, the inner rotor drives the outer rotor to rotate, lubricating oil enters the first oil inlet hole through the second oil inlet hole and then enters the space between the inner rotor and the outer rotor, the inner rotor and the outer rotor continuously rotate, the lubricating oil is discharged into the first oil outlet hole and then discharged out of the shell through the second oil outlet hole, the supply of the lubricating oil is completed, meanwhile, the lubricating component automatically lubricates the inner sides of the outer rotor and the shell, the friction force between the outer rotor and the shell is reduced, the possibility of abrasion between the outer rotor and the shell is reduced, the possibility of loosening of the outer rotor is reduced, the possibility of abnormal work of;
2. the sliding arc surface reduces the contact area between the extrusion strip and the inner cavity of the shell and reduces the friction force between the extrusion strip and the shell;
3. when the lubricating oil is accumulated in the shell, the lubricating oil flows out through the return hole and leaves the inner cavity immediately, so that the possibility of accumulating the lubricating oil in the inner cavity of the shell is reduced.
Drawings
Fig. 1 is a schematic structural diagram of the embodiment.
Fig. 2 is a sectional view taken along line a-a in fig. 1.
Fig. 3 is a sectional view taken along line B-B in fig. 1.
Fig. 4 is an enlarged view of the portion C in fig. 3.
Fig. 5 is a sectional view taken along line D-D in fig. 1.
In the figure: 1. a housing; 11. sealing the cover; 111. a second oil inlet hole; 112. a second oil outlet hole; 12. an outer rotor; 121. extruding the strip; 122. a sliding arc surface; 13. an inner rotor; 14. a drive shaft; 15. a driving gear; 16. sealing glue; 17. a first oil inlet hole; 18. a first oil outlet hole; 19. a return orifice; 2. a lubrication assembly; 21. a pressing plate; 211. extruding a groove; 212. a reset groove; 213. a reset plate; 214. extruding surface; 215. extruding the cambered surface; 216. connecting grooves; 22. a return spring; 23. an oil supply pipe; 24. a branch pipe; 25. and (4) dividing the tube.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Example (b):
referring to fig. 1 and 2, an enhanced self-lubricating oil pump comprises a shell 1, a sealing cover 11, an outer rotor 12, an inner rotor 13, a transmission shaft 14 and a driving gear 15, wherein the sealing cover 11 is detachably connected to the shell 1, one side of the shell 1, which is close to the sealing cover 11, is coated with a sealant 16, the sealant 16 is a silica gel sealant, the shell 1 is respectively provided with a first oil inlet hole 17 and a first oil outlet hole 18, the sealing cover 11 is respectively provided with a second oil inlet hole 111 and a second oil outlet hole 112, the first oil inlet hole 17 is communicated with the second oil inlet hole 111, and the first oil outlet hole 18 is communicated with the second oil outlet hole 112.
Referring to fig. 2, the outer rotor 12 is rotatably connected in the housing 1, the inner rotor 13 is arranged in the outer rotor 12, the transmission shaft 14 is arranged on the inner rotor 13, the transmission shaft 14 extends to one side far away from the sealing cover 11, one end of the transmission shaft 14 far away from the sealing cover 11 extends out of the housing 1, the driving gear 15 is arranged at one end of the transmission shaft 14 extending out of the housing 1, and the driving gear 15 and the inner rotor 13 are in interference fit with the transmission shaft 14.
Referring to fig. 2, a lubricating assembly 2 for automatically supplying oil between the outer rotor 12 and the housing 1 is arranged on the housing 1, a backflow hole 19 is arranged on the inner side wall of the housing 1, the backflow hole 19 is arranged close to one side of the sealing cover 11, and the backflow hole 19 is positioned between the outer side plate of the outer rotor 12 and the inner side wall of the housing 1; when the engine oil pump works, the driving gear 15 is driven to rotate, the driving gear 15 drives the transmission shaft 14 to rotate, the transmission shaft 14 drives the inner rotor 13 to rotate, the inner rotor 13 drives the outer rotor 12 to rotate, lubricating oil enters the first oil inlet hole 17 through the two oil inlet holes 111 and then enters between the inner rotor 13 and the outer rotor 12, the inner rotor 13 and the outer rotor 12 continue to rotate, and the lubricating oil enters the second oil outlet hole 112 through the first oil outlet hole 18 and then leaves the shell 1 to finish oil supply.
Referring to fig. 2, during the operation of the oil pump, the lubricating assembly 2 continuously supplies oil between the outer rotor 12 and the casing 1, and when the lubricating oil is accumulated in the casing 1, the lubricating oil flows out of the casing 1 through the return hole 19, so that the possibility of the accumulation of the lubricating oil in the casing 1 is reduced; therefore, the friction force between the outer rotor 12 and the shell 1 is reduced, the possibility of mutual abrasion between the outer rotor 12 and the shell 1 is reduced, the possibility of looseness of the outer rotor 12 is reduced, the possibility of abnormal operation of the oil pump is reduced, and the reliability of the oil pump is improved.
Referring to fig. 3 and 4, the lubricating assembly 2 includes an extrusion plate 21, a reset spring 22, an oil supply pipe 23 and a plurality of branch pipes 24, an extrusion groove 211 is formed in the inner side wall of the housing 1, the extrusion groove 211 is arranged along the height direction of the housing 1, the extrusion plate 21 is connected in the extrusion groove 211 in a sliding manner, a reset groove 212 is formed in the side wall of the extrusion groove 211 opposite to the groove, the reset groove 212 is arranged along the depth direction of the extrusion groove 211, a reset plate 213 sliding in the reset groove 212 is integrally manufactured on the side surface of the extrusion plate 21, one end of the reset spring 22 is connected to the side surface of the reset plate 213, the other end of the reset spring is fixedly connected with the groove side wall of the reset groove 212.
Referring to fig. 4, one side of the pressing plate 21, which is close to the outer rotor 12, extends out of the pressing groove 211, one side of the pressing plate 21, which extends out of the pressing groove 211, is provided with an arc-shaped pressing surface 214, and a convex surface of the pressing surface 214 extends out of the pressing groove 211; the outer side plate of the outer rotor 12 is provided with a plurality of extrusion strips 121, the plurality of extrusion strips 121 are uniformly distributed along the circumferential direction of the outer rotor 12, one side of each extrusion strip 121, which is far away from the outer rotor 12, is provided with a sliding arc surface 122, and a convex surface of the sliding arc surface 122 is connected with the inner side wall of the shell 1 in a sliding manner, so that the contact area between the extrusion strips 121 and the shell 1 is reduced, and the friction force between the extrusion strips 121 and the shell 1 is reduced.
Referring to fig. 4, the oil supply pipe 23 is disposed in the casing 1, one end of the oil supply pipe 23 is communicated with the first oil outlet 18, the other end of the oil supply pipe 23 is communicated with the inner cavity of the casing 1, the end of the oil supply pipe 23 connected with the inner cavity of the casing 1 is far away from the sealing cover 11, the oil supply pipe 23 passes through the extrusion groove 211, the oil supply pipe 23 is disposed along the length direction of the extrusion groove 211, an extrusion arc surface 215 is disposed on one side of the extrusion plate 21 close to the oil supply pipe 23, a concave surface of the extrusion arc surface 215 is attached to the outer side of the oil supply pipe 23, two connection grooves 216 are disposed on the bottom wall of the extrusion groove 211; the pressing arc surface 215 increases the contact area of the pressing plate 21 and the oil supply pipe 23, and the connecting groove 216 increases the moving range of the pressing plate 21 and increases the degree of pressing of the pressing plate 21 against the oil supply pipe 23.
Referring to fig. 4 and 5, a shunt pipe 25 is annularly arranged in the shell 1, the shunt pipe 25 is communicated with the oil supply pipe 23, one end of the branch pipe 24 is communicated with the shunt pipe 25, the other end of the branch pipe 24 is communicated with the inner cavity of the shell 1, and a plurality of branch pipes 24 are uniformly distributed along the circumferential direction of the shunt pipe 25; when the oil pump works, lubricating oil enters the oil supply pipe 23 through the first oil outlet hole 18, the outer rotor 12 rotates to drive the extrusion strip 121 to rotate, the sliding arc surface 122 of the extrusion strip 121 is abutted to the extrusion surface 214 to push the extrusion plate 21 to move, the extrusion plate 21 drives the reset plate 213 to move, the reset plate 213 drives the reset spring 22 to stretch, the extrusion arc surface 215 extrudes the oil supply pipe 23 to push the lubricating oil passing through the oil supply pipe 23 to enter the cavity of the shell 1, the branch pipe 24 increases the passage of the lubricating oil entering the shell 1, and the amount of the lubricating oil entering the shell 1 is increased; after the oil is delivered once, the return spring 22 recovers deformation, the return plate 213 is pulled to move in the return groove 212, the return plate 213 drives the extrusion plate 21 to recover the original position, the oil supply pipe 23 recovers, and the lubricating oil continues to enter the oil supply pipe 23.
The implementation principle of the above embodiment is as follows: when the oil pump works, the driving gear 15 is driven to rotate, the driving gear 15 drives the transmission shaft 14 to rotate, the transmission shaft 14 drives the inner rotor 13 to rotate, the inner rotor 13 drives the outer rotor 12 to rotate, so that lubricating oil is sucked into the first oil inlet hole 17 through the second oil inlet hole 111, the lubricating oil enters between the inner rotor 13 and the outer rotor 12, the inner rotor 13 continues to drive the outer rotor 12 to rotate, the lubricating oil is driven to enter the first oil outlet hole 18, and the lubricating oil leaves the shell 1 through the second oil outlet hole 112, so that the supply of the lubricating oil; in the working process of the oil pump, the lubricating component 2 continuously supplies oil to the outer rotor 12 and the inner side of the shell 1, so that the friction force between the outer rotor 12 and the shell 1 is reduced, the possibility that the outer rotor 12 wears the shell 1 is reduced, the possibility that the outer rotor 12 and the shell 1 are loosened is reduced, the possibility that the oil pump cannot normally work is reduced, and the reliability of the oil pump is improved.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.
Claims (9)
1. The utility model provides an enhancement mode self-lubricating oil pump, includes casing (1), rotation connection in casing (1) external rotor (12), set up in external rotor (12) inner rotor (13) and with inner rotor (13) fixed connection's transmission shaft (14), the axis direction setting of inner rotor (13) is followed in transmission shaft (14), casing (1) is stretched out to the one end of transmission shaft (14), the one end that casing (1) was stretched out in transmission shaft (14) is equipped with driving gear (15), its characterized in that: one end of the shell (1) far away from the driving gear (15) is provided with a sealing cover (11), one side of the shell (1) close to the sealing cover (11) is provided with a first oil inlet hole (17) and a first oil outlet hole (18) respectively, the sealing cover (11) is provided with a second oil inlet hole (111) and a second oil outlet hole (112) respectively, the first oil outlet hole (18) is communicated with the second oil outlet hole (112), the first oil inlet hole (17) is communicated with the second oil inlet hole (111), and the shell (1) is provided with a lubricating assembly (2) which automatically supplies oil between the outer rotor (12) and the shell (1).
2. An enhanced self-lubricating oil pump according to claim 1, characterized in that: the lubricating assembly (2) comprises an extrusion plate (21) arranged on the inner side wall of the shell (1), a return spring (22) arranged on the extrusion plate (21) and an oil supply pipe (23) arranged in the shell (1), an extrusion groove (211) is formed in the inner side wall of the shell (1), the extrusion plate (21) is connected in the extrusion groove (211) in a sliding mode, and one end, far away from the extrusion plate (21), of the return spring (22) is connected with the side wall of the extrusion groove (211);
the oil supply pipe (23) penetrates through the extrusion groove (211), one section of the oil supply pipe (23) extending into the extrusion groove (211) is positioned between the extrusion plate (21) and the groove bottom wall of the extrusion groove (211), one end of the oil supply pipe (23) is communicated with the first oil outlet hole (18), and the other end of the oil supply pipe is communicated with the inner cavity of the shell (1);
one side that fuel feed pipe (23) was kept away from in stripper plate (21) stretches out in extrusion groove (211), stripper plate (21) stretch out one side of extrusion groove (211) is equipped with extrusion face (214), be equipped with on the lateral wall of outer rotor (12) with extrusion face (214) to a plurality of extrusion strip (121) of contradicting, the side and casing (1) inside wall of extrusion strip (121) slide and be connected, a plurality of extrusion strip (121) are followed the circumference equipartition of outer rotor (12).
3. An enhanced self-lubricating oil pump according to claim 2, characterized in that: one side of the extrusion strip (121) far away from the outer rotor (12) is provided with a sliding arc surface (122), and a convex surface of the sliding arc surface (122) is in contact with the inner side wall of the shell (1).
4. An enhanced self-lubricating oil pump according to claim 2, characterized in that: a plurality of branch pipes (24) are arranged on the side surface of the oil supply pipe (23), and the branch pipes (24) are communicated with the inner cavity of the shell (1).
5. An enhanced self-lubricating oil pump according to claim 2, characterized in that: the extrusion surface (214) is arc-shaped, and the convex surface of the extrusion surface (214) extends out of the extrusion groove (211).
6. An enhanced self-lubricating oil pump according to claim 2, characterized in that: the extrusion plate (21) is close to one side of fuel feeding pipe (23) is equipped with extrusion cambered surface (215), the concave surface of extrusion cambered surface (215) with the outside wall of fuel feeding pipe (23) is laminated mutually.
7. An enhanced self-lubricating oil pump according to claim 2, characterized in that: two connecting grooves (216) for inserting of the extrusion plate (21) are formed in the wall of the bottom of the extrusion groove (211), and the two connecting grooves (216) are located on two sides of the oil supply pipe (23).
8. An enhanced self-lubricating oil pump according to claim 1, characterized in that: be equipped with backward flow hole (19) on the bottom wall in casing (1), backward flow hole (19) are located between outer rotor (12) and casing (1) inner chamber.
9. An enhanced self-lubricating oil pump according to claim 1, characterized in that: and a sealing glue (16) is filled between the sealing cover (11) and the shell (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021095471.2U CN212456227U (en) | 2020-06-13 | 2020-06-13 | Enhanced self-lubricating oil pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021095471.2U CN212456227U (en) | 2020-06-13 | 2020-06-13 | Enhanced self-lubricating oil pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212456227U true CN212456227U (en) | 2021-02-02 |
Family
ID=74469771
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021095471.2U Active CN212456227U (en) | 2020-06-13 | 2020-06-13 | Enhanced self-lubricating oil pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212456227U (en) |
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2020
- 2020-06-13 CN CN202021095471.2U patent/CN212456227U/en active Active
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