Anti-abrasion oil pump

Abstract

The utility model provides an anti-abrasion oil pump, and belongs to the technical field of oil pumps. The shell cover is fixed on the outer wall of one side of the oil pump shell through a bolt; the driving motor is fixed on the outer wall of the other side of the oil pump shell through a bolt; the driving oil conveying gear is fixed at the output end of the driving motor; the driven oil conveying gear rotates at the position, close to one side of the driving oil conveying gear, of the inner side wall of the oil pump shell; the annular groove and the engine oil circulation groove are formed in the outer wall of one side of the driving oil conveying gear; engine oil can penetrate through the low-pressure flow guide hole and the engine oil circulation groove to enter the space between the two adjacent gear teeth on the driving oil conveying gear and the single gear tooth on the driven oil conveying gear, the engine oil is filled between the meshed gear teeth, the contact faces between the gear teeth are lubricated through the engine oil, abrasion of the gear teeth is reduced, and the service life of the gear teeth is prolonged. And the condition of operation jamming caused by gear abrasion is avoided.

Description

Technical Field

[0001] This utility model belongs to the field of oil pump technology, and specifically relates to an anti-wear oil pump. Background Technology

[0002] The oil pump is used to pressurize the oil in the oil pan to the filter, and ensure that the oil can still be reliably delivered to the various lubrication channels and friction surfaces of the moving parts after passing through the filter. When the engine is running, the oil pump works continuously to ensure that the oil circulates continuously in the lubrication circuit.

[0003] The gear set in the existing oil pump will come into contact and rub during the transmission process. After the gear set has been running for a period of time, the gear teeth will gradually wear down, which can easily lead to gear wear and jamming. The gear set in the oil pump cannot lubricate itself during the oil delivery process.

[0004] Therefore, an anti-wear oil pump is proposed. Summary of the Invention

[0005] This invention provides an anti-wear oil pump, the purpose of which is to solve the problems mentioned above.

[0006] This utility model provides an anti-wear oil pump, including an oil pump housing; a housing cover bolted to one side of the outer wall of the oil pump housing; a drive motor bolted to the other side of the outer wall of the oil pump housing; a driving oil delivery gear fixed to the output end of the drive motor; a driven oil delivery gear rotatably located on the inner wall of the oil pump housing near the driving oil delivery gear; an annular groove and an oil flow groove formed on the outer wall of one side of the driving oil delivery gear, the oil flow groove being located outside the annular groove and connected to it; an oil flow-blocking ring bolted to the outer wall of one side of the housing cover near the inner side of the annular groove; and a low-pressure guide hole and a high-pressure guide hole penetrating the outer wall of the oil flow-blocking ring, the low-pressure guide hole being located on one side of the high-pressure guide hole.

[0007] Furthermore, the top of the oil pump housing is provided with an oil outlet, and the bottom of the oil pump housing is provided with an oil inlet. A high-pressure chamber is provided inside the oil pump housing near the upper position of the driving oil delivery gear and the driven oil delivery gear, and a low-pressure chamber is provided inside the oil pump housing near the lower position of the driving oil delivery gear and the driven oil delivery gear.

[0008] Furthermore, both the driving oil delivery gear and the driven oil delivery gear are provided with gear teeth, and the driving oil delivery gear and the driven oil delivery gear are driven by gear tooth meshing. Both the driving oil delivery gear and the driven oil delivery gear are rotatably connected to the outer casing cover.

[0009] By adopting the above technical solution, the active oil delivery gear and the driven oil delivery gear mesh and drive, so that the teeth on the active oil delivery gear and the driven oil delivery gear experience meshing and disengagement, thereby realizing volume change and using vacuum suction to realize oil delivery.

[0010] Furthermore, the outer wall of the oil flow barrier ring is precisely fitted with the inner wall of the annular groove;

[0011] By adopting the above technical solution, the gap between the oil flow barrier ring and the annular groove is reduced.

[0012] Furthermore, one low-pressure guide hole is provided, and the low-pressure guide hole is located on the horizontal side of the meshing point of the upper gear teeth of the driving oil supply gear and the driven oil supply gear;

[0013] By adopting the above technical solution, the high and low pressure difference at the connection between the low-pressure guide hole and the high-pressure guide hole can be used to allow the engine oil to pass through the high-pressure guide hole into the annular groove under high pressure, and then enter the gear meshing part through the low-pressure guide hole, thereby lubricating the gear meshing part.

[0014] Furthermore, the oil flow grooves are axially spaced at equal intervals between every two adjacent teeth of the drive oil delivery gear, and the oil flow grooves can be connected to the low-pressure guide hole and the high-pressure guide hole;

[0015] By adopting the above technical solution, the engine oil can enter between two adjacent teeth on the active oil delivery gear through the oil flow groove 7, thereby filling the meshing teeth with engine oil, lubricating the contact surface between the teeth and reducing tooth wear.

[0016] Furthermore, the oil outlet is connected to the high-pressure chamber, and the oil inlet is connected to the low-pressure chamber;

[0017] By adopting the above technical solution, the oil can be guaranteed to enter and exit the oil pump housing.

[0018] The beneficial effects of this utility model are as follows:

[0019] This invention utilizes the relative positional changes between the oil flow groove on the active oil delivery gear and the low-pressure and high-pressure guide holes on the oil flow obstruction ring to ensure that the oil flows along the designed path. Furthermore, by leveraging the high and low pressure difference at the point where the low-pressure and high-pressure guide holes connect, the oil can pass through the low-pressure guide hole and the oil flow groove into the space between two adjacent teeth on the active oil delivery gear and a single tooth on the driven oil delivery gear. The oil fills the meshing teeth, lubricating the contact surfaces and reducing tooth wear. This prevents gear wear from causing operational jamming, ensuring stable oil pump operation and extending its service life.

[0020] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of this invention can be realized and obtained by means of the structures particularly pointed out in the description and the drawings. Attached Figure Description

[0021] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0022] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0023] Figure 2 This is a schematic diagram of the engagement of the active oil delivery gear and the oil flow blocking ring in an embodiment of this utility model;

[0024] Figure 3 This is a schematic diagram of the oil pump housing structure according to an embodiment of the present utility model;

[0025] Figure 4 This is a schematic diagram of the oil flow barrier ring structure according to an embodiment of the present invention;

[0026] Figure 5 This is a front view of the oil pump housing according to an embodiment of the present utility model;

[0027] Reference numerals in the attached diagram: 1. Oil pump housing; 2. Housing cover; 3. Drive motor; 4. Driven oil delivery gear; 5. Driven oil delivery gear; 6. Annular groove; 7. Oil flow channel; 8. Oil flow barrier ring; 9. Low-pressure guide hole; 10. High-pressure guide hole; 11. Oil outlet; 12. Oil inlet; 13. High-pressure chamber; 14. Low-pressure chamber. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. The same reference numerals in the drawings represent the same components. It should be noted that the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0029] Reference Figure 1-5This utility model provides an anti-wear oil pump, including an oil pump housing 1. A housing cover 2 is bolted to one outer wall of the oil pump housing 1, and a drive motor 3 is bolted to the other outer wall of the oil pump housing 1. A drive oil delivery gear 4 is fixedly connected to the output end of the drive motor 3. A driven oil delivery gear 5 is rotatably connected to the inner wall of one side of the oil pump housing 1 near the drive oil delivery gear 4. The drive oil delivery gear 4 and the driven oil delivery gear 5... The outer sidewall is precisely matched to the inner sidewall of the oil pump housing 1. Both the driving oil delivery gear 4 and the driven oil delivery gear 5 are provided with gear teeth, and the driving oil delivery gear 4 and the driven oil delivery gear 5 are driven by gear tooth meshing. Both the driving oil delivery gear 4 and the driven oil delivery gear 5 are rotatably connected to the housing cover 2. Through the meshing transmission of the driving oil delivery gear 4 and the driven oil delivery gear 5, the gear teeth on the driving oil delivery gear 4 and the driven oil delivery gear 5 undergo meshing and disengagement, thereby realizing volume change and using vacuum suction to realize oil delivery.

[0030] An annular groove 6 is formed on the outer wall of the driving oil supply gear 4 adjacent to the driven oil supply gear 5. Several oil flow grooves 7 are axially spaced at equal intervals on the outer wall of the driving oil supply gear 4 near the outer side of the annular groove 6. These oil flow grooves 7 are axially spaced between every two adjacent teeth of the driving oil supply gear 4, allowing oil to enter between adjacent teeth through the oil flow grooves 7. This fills the meshing teeth with oil, lubricating the contact surfaces and reducing tooth wear. An oil flow barrier ring 8 is bolted to the outer wall of the outer casing 2 near the inside of the oil pump casing 1. The outer wall of the oil flow barrier ring 8 precisely fits the inner wall of the annular groove 6, reducing the oil flow barrier ring's resistance. The gap between the oil flow ring 8 and the annular groove 6 is provided with a through low-pressure guide hole 9 and a high-pressure guide hole 10 on one side of the outer wall of the oil flow ring 8. The low-pressure guide hole 9 is located on one side of the high-pressure guide hole 10. There is one low-pressure guide hole 9, and the low-pressure guide hole 9 is located on the horizontal side of the gear meshing point on the driving oil supply gear 4 and the driven oil supply gear 5. By utilizing the high and low pressure difference at the connection point of the low-pressure guide hole 9 and the high-pressure guide hole 10, the oil can pass through the high-pressure guide hole 10 under high pressure and enter the annular groove 6, and enter the gear meshing point through the low-pressure guide hole 9, thereby lubricating the gear meshing point. The oil flow groove 7 can be connected to the low-pressure guide hole 9 and the high-pressure guide hole 10 to ensure that the oil flows between the oil flow groove 7, the low-pressure guide hole 9 and the high-pressure guide hole 10.

[0031] The top of the oil pump housing 1 is provided with an oil outlet 11, and the bottom of the oil pump housing 1 is provided with an oil inlet 12. A high-pressure chamber 13 is provided inside the oil pump housing 1 near the driving oil delivery gear 4 and the driven oil delivery gear 5 and between the oil outlet 11. A low-pressure chamber 14 is provided inside the oil pump housing 1 near the driving oil delivery gear 4 and the driven oil delivery gear 5 and between the oil inlet 12. The oil outlet 11 and the high-pressure chamber 13 are connected, and the oil inlet 12 and the low-pressure chamber 14 are connected to ensure that the oil enters and exits the oil pump housing 1.

[0032] The specific implementation method is as follows: In use, the drive motor 3 drives the active oil delivery gear 4 to rotate counterclockwise through its output end on one side. Through the meshing transmission between the active oil delivery gear 4 and the driven oil delivery gear 5, the driven oil delivery gear 5 rotates clockwise. The low-pressure chamber 14 inside the oil pump housing 1 generates a vacuum negative pressure suction force. The oil enters the low-pressure chamber 14 through the oil inlet 12. The gear teeth on the active oil delivery gear 4 and the driven oil delivery gear 5 deliver the oil to the high-pressure chamber 13. The oil accumulates in the high-pressure chamber 13 and is discharged through the oil outlet 11. Under the obstruction of the oil flow-blocking ring 8, the oil in the high-pressure chamber 13 passes through the oil flow groove 7 and the high-pressure guide hole 10 in sequence and enters the annular groove 6. Under the action of the oil pressure difference, the oil in the annular groove 6 passes through the low-pressure guide hole 9 and the oil flow groove 7 in sequence and is guided to the meshing point of the gear teeth on the active oil delivery gear 4 and the driven oil delivery gear 5. The oil lubricates the contact surface between the gear teeth and reduces gear wear.

[0033] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A wear-resistant oil pump, characterized in that: Including the oil pump housing (1); The housing cover (2) is bolted to the outer wall of one side of the oil pump housing (1); and The drive motor (3) is fixed to the outer wall of the other side of the oil pump housing (1) by bolts; The active oil delivery gear (4) is fixed to the output end of the drive motor (3); The driven oil delivery gear (5) rotates on the inner wall of the oil pump housing (1) near the active oil delivery gear (4); An annular groove (6) and an oil flow groove (7) are formed on the outer wall of one side of the active oil delivery gear (4). The oil flow groove (7) is located outside the annular groove (6) and the oil flow groove (7) and the annular groove (6) are connected. An oil flow barrier ring (8) is fixed to the outer wall of one side of the outer casing (2) near the inner side of the annular groove (6) by bolts. The low-pressure guide hole (9) and the high-pressure guide hole (10) are opened through the outer wall of the oil flow barrier ring (8), and the low-pressure guide hole (9) is located on one side of the high-pressure guide hole (10).

2. The anti-wear oil pump according to claim 1, characterized in that: The top of the oil pump housing (1) is provided with an oil outlet (11), and the bottom of the oil pump housing (1) is provided with an oil inlet (12). The interior of the oil pump housing (1) is provided with a high-pressure chamber (13) near the upper position of the driving oil delivery gear (4) and the driven oil delivery gear (5), and the interior of the oil pump housing (1) is provided with a low-pressure chamber (14) near the lower position of the driving oil delivery gear (4) and the driven oil delivery gear (5).

3. The anti-wear oil pump according to claim 1, characterized in that: Both the active oil delivery gear (4) and the driven oil delivery gear (5) are provided with gear teeth, and the active oil delivery gear (4) and the driven oil delivery gear (5) are driven by gear teeth meshing. Both the active oil delivery gear (4) and the driven oil delivery gear (5) are rotatably connected to the outer cover (2).

4. The anti-wear oil pump according to claim 1, characterized in that: The outer wall of the oil flow barrier ring (8) is precisely fitted with the inner wall of the annular groove (6).

5. The anti-wear oil pump according to claim 1, characterized in that: One low-pressure guide hole (9) is provided, and the low-pressure guide hole (9) is located on the horizontal side of the meshing point of the upper gear teeth of the driving oil supply gear (4) and the driven oil supply gear (5).

6. The anti-wear oil pump according to claim 1, characterized in that: The oil flow groove (7) is axially and equally spaced between every two adjacent teeth on the active oil delivery gear (4). The oil flow groove (7) can be connected to the low-pressure guide hole (9) and the high-pressure guide hole (10).

7. The anti-wear oil pump according to claim 2, characterized in that: The oil outlet (11) is connected to the high-pressure chamber (13), and the oil inlet (12) is connected to the low-pressure chamber (14).

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