Oil pump convenient for pressure reduction

Abstract

The utility model discloses an oil pump convenient for pressure reduction, which belongs to the technical field of oil pumps and comprises a front cover shell, a fixing frame fixed on two sides of the bottom end of the front cover shell, an outer gear ring mounted in the front cover shell, a purification structure arranged on one side of the front cover shell and an oil inlet, and the pressure relief structure is mounted on one side of the purification structure and comprises a pressure relief pipe fixed to the top end of one side of the cover shell, an oil discharge pipe fixed to one side of the pressure relief pipe and a moving assembly arranged on one side of the reset spring. The check block is pushed to be separated from the sealing gasket through oil pressure, high-pressure engine oil enters the pressure relief pipe, pressure reduction is achieved, the pre-tightening force of the reset spring can be adjusted by rotating the screw rod, and therefore the automatic pressure reduction function of the device is achieved, and power loss and component abrasion caused by too high pressure are avoided. And the pressure reduction range can be flexibly adjusted to better adapt to engine working condition changes.

Description

Technical Field

[0001] This utility model relates to the field of oil pump technology, specifically an oil pump that facilitates pressure reduction. Background Technology

[0002] An oil pump is used to draw and pressurize engine oil from the oil pan and deliver it through pipelines to various moving parts of the engine. It ensures that the engine is adequately lubricated, cooled, cleaned, and sealed, and is therefore widely used in internal combustion engines, semiconductors, solar energy, and other fields.

[0003] Chinese patent CN214887279U discloses an oil pump, belonging to the field of oil pump technology. It includes an oil pump body with an oil pump cover fixedly connected to its end. An internal shaft is provided within the oil pump body's cavity. An inner rotor is sleeved on the shaft, with the outer teeth of the inner rotor meshing with the inner teeth of an outer rotor. The outer wall of the outer rotor is in contact with the inner wall of the oil pump body. An oil suction chamber and an oil discharge chamber are provided at the bottom of the inner cavity of the oil pump body. The oil suction chamber is connected to an oil inlet via an oil inlet channel, and the oil discharge chamber is connected to an oil discharge port via an oil outlet channel. A limiting groove is provided on the oil pump cover. One end of the driving shaft is located within the limiting groove, and the other end penetrates through the inner wall of the oil pump body. This invention solves the problem that during engine acceleration, the sudden increase in engine speed results in insufficient oil flow, leading to inadequate lubrication of the friction surfaces of various moving parts of the engine, resulting in wear of these parts and ultimately reducing the service life of the oil pump.

[0004] The aforementioned patent still has the following shortcomings: it has the defect of not being convenient to reduce oil pressure, which can easily lead to excessively high oil pressure when running at low speed or starting at low temperature, increasing the internal power consumption and friction loss of the engine. At the same time, long-term high-pressure operation will accelerate oil aging, reduce lubrication effect, and even cause oil leakage and other malfunctions. Utility Model Content

[0005] Technical problems to be solved

[0006] The purpose of this invention is to overcome the shortcomings of existing devices in that they are not convenient for reducing oil pressure.

[0007] Technical solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: an oil pump for easy pressure reduction, including a front cover housing, and further comprising:

[0009] A fixing bracket is fixed to both sides of the bottom end of the front cover, and an oil outlet is provided on one side inside the front cover.

[0010] An external gear ring is installed inside the front cover, and an internal gear is meshed inside the external gear ring, and a drive shaft is fixed inside the internal gear.

[0011] The rear cover is installed on one side of the front cover, and a suction chamber is provided on one side of the interior of the rear cover, and a pressure chamber is provided on the other side of the interior of the rear cover.

[0012] The purification structure, located on one side of the front cover, is used to filter the oil entering the device;

[0013] The oil inlet is installed on one side of the purification structure;

[0014] The drive wheel is fixed to one side of the drive shaft;

[0015] A pressure relief structure is fixed to the top of one side of the front cover. The pressure relief structure includes a pressure relief pipe fixed to the top of one side of the cover, a sealing gasket installed inside the pressure relief pipe, a stop block inserted inside the sealing gasket, a return spring fixed to one side of the stop block, an oil drain pipe fixed to one side of the pressure relief pipe, and a moving component disposed on one side of the return spring.

[0016] The above technical solution connects the transmission wheel to an external power source, causing the transmission shaft to drive the internal gear and external gear ring to mesh and rotate, so that the oil inlet draws in the oil and the oil outlet discharges the pressurized oil. The pressure of the discharged oil is controlled by the pressure relief structure.

[0017] Furthermore, the movable assembly includes a mounting base threaded inside one side of the pressure relief pipe, a screw threaded inside the mounting base, and a movable piston rotatably connected to one side of the screw and slidably connected to the pressure relief pipe.

[0018] The above technical solution uses hydraulic pressure to push the stop block away from the sealing gasket, allowing high-pressure oil to enter the pressure relief pipe and thus reduce pressure. The preload of the return spring can be adjusted by rotating the screw.

[0019] Furthermore, the stop block forms a telescopic structure with the sealing gasket via a return spring, and the internal shape of the sealing gasket matches the external shape of the stop block.

[0020] The above technical solution ensures that the sealing gasket and the stop block can effectively seal when the pressure is normal, preventing oil leakage.

[0021] Furthermore, a seal is installed between the movable piston and the pressure relief pipe, and the pressure relief pipe is connected to the pressure chamber.

[0022] The above technical solution ensures a tight seal during the pressure relief process by using sealing components, thus preventing oil leakage from the gaps.

[0023] Furthermore, the purification structure includes a cover fixed to one side of the front cover and connected to the suction chamber, a waste pipe installed at the bottom of the cover, a screw cap threaded to the outside of the bottom of the waste pipe, an oil filter fixed inside the cover, a spiral blade shaft rotatably connected inside the oil filter, a first bevel gear installed on one side of the spiral blade shaft, and a second bevel gear fixed to one side of the drive shaft and meshing with the first bevel gear.

[0024] The above technical solution filters the oil entering the suction chamber through an oil filter screen, while the spiral impeller pushes the intercepted sediment into the waste pipe.

[0025] Furthermore, the spiral blade shaft extends to the outside of the casing and connects to the first bevel gear, and the waste pipe extends to the inside of the casing and connects to the oil filter.

[0026] The above technical solution enables effective power transmission, driving the spiral blade shaft to rotate and scrape the sediment.

[0027] Furthermore, the outer wall of the waste pipe is provided with external threads, and the inside of the cap is provided with internal threads that cooperate with the external threads.

[0028] The above technical solution enables a tight connection and convenient disassembly between the cap and the waste pipe. The cap can be opened quickly when cleaning waste, making operation convenient. At the same time, the tight connection can prevent waste leakage.

[0029] Compared with existing technologies, this oil pump that facilitates pressure reduction has the following advantages:

[0030] I. This utility model uses hydraulic pressure to push the stop block away from the sealing gasket, allowing high-pressure oil to enter the pressure relief pipe and achieve pressure reduction. The preload of the return spring can be adjusted by rotating the screw, thereby realizing the automatic pressure reduction function of this device, avoiding power loss and component wear caused by excessive pressure, and the flexible adjustment of the pressure reduction range can better adapt to changes in engine operating conditions.

[0031] II. This utility model filters the engine oil entering the suction chamber through an oil filter screen, while the spiral impeller pushes the intercepted sediment into the waste pipe, thereby realizing the oil filtration function of this device, effectively removing impurities and particulate matter from the engine oil, preventing them from entering the oil pump, reducing wear, and extending the service life of components. Attached Figure Description

[0032] Figure 1 This is a frontal three-dimensional structural diagram of the present invention;

[0033] Figure 2 This is a rear-view three-dimensional structural diagram of the present invention;

[0034] Figure 3This is a frontal three-dimensional structural diagram of the pressure chamber of this utility model;

[0035] Figure 4 A three-dimensional cross-sectional structural diagram of the pressure relief structure provided by this utility model;

[0036] Figure 5 This is a three-dimensional cross-sectional structural diagram of the purification structure provided by this utility model.

[0037] In the diagram: 1. Front cover; 2. Pressure relief structure; 201. Pressure relief pipe; 202. Stop block; 203. Sealing gasket; 204. Oil drain pipe; 205. Return spring; 206. Moving piston; 207. Mounting base; 208. Screw; 3. Fixing bracket; 4. Purification structure; 401. Cover; 402. Oil filter; 403. Spiral blade shaft; 404. First bevel gear; 405. Second bevel gear; 406. Waste pipe; 407. Screw cap; 5. Rear cover; 6. Drive wheel; 7. Oil inlet; 8. Oil outlet; 9. Drive shaft; 10. Suction chamber; 11. Pressure chamber; 12. External gear ring; 13. Internal gear. Detailed Implementation

[0038] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0039] like Figure 1-5 As shown, an oil pump for easy pressure reduction includes a front cover housing 1, and further includes:

[0040] The fixing bracket 3 is fixed on both sides of the bottom end of the front cover 1, and an oil outlet 8 is provided on one side inside the front cover 1.

[0041] An external gear ring 12 is installed inside the front cover 1, and an internal gear 13 is meshed inside the external gear ring 12, and a drive shaft 9 is fixed inside the internal gear 13.

[0042] The rear cover 5 is installed on one side of the front cover 1, and a suction chamber 10 is provided on one side of the interior of the rear cover 5, and a pressure chamber 11 is provided on the other side of the interior of the rear cover 5.

[0043] Purification structure 4 is located on one side of the front cover 1 and is used to filter the oil entering the device;

[0044] Oil inlet 7 is installed on one side of the purification structure 4;

[0045] The transmission wheel 6 is fixed to one side of the transmission shaft 9;

[0046] The pressure relief structure 2 is fixed to the top of one side of the front cover 1. The pressure relief structure 2 includes a pressure relief pipe 201 fixed to the top of one side of the cover 1, a sealing gasket 203 installed inside the pressure relief pipe 201, a stop block 202 inserted inside the sealing gasket 203, a return spring 205 fixed to one side of the stop block 202, an oil drain pipe 204 fixed to one side of the pressure relief pipe 201, and a moving component disposed on one side of the return spring 205.

[0047] In this embodiment of the utility model, the transmission wheel 6 is connected to an external power source by using bolts to pass through the fixing bracket 3 and mounting it on the vehicle frame. The transmission wheel 6 drives the transmission shaft 9 to rotate, and the transmission shaft 9 drives the internal gear 13 to mesh and rotate with the external gear ring 12, forming the power to transport oil. The oil is introduced through the oil inlet 7 and discharged through the oil outlet 8. The suction chamber 10 is responsible for sucking in the oil introduced through the oil inlet 7, and the pressure chamber 11 is used to pressurize the oil. The oil is then discharged through the oil outlet 8.

[0048] like Figure 4 As shown, the movable assembly includes a mounting base 207 threadedly connected to the inside of one side of the pressure relief pipe 201, a screw 208 threadedly connected to the inside of the mounting base 207, and a movable piston 206 rotatably connected to one side of the screw 208 and slidably connected to the pressure relief pipe 201. The stop block 202 forms a telescopic structure with the sealing gasket 203 through the return spring 205. The internal shape of the sealing gasket 203 matches the external shape of the stop block 202. A seal is installed between the movable piston 206 and the pressure relief pipe 201. The pressure relief pipe 201 is connected to the pressure chamber 11.

[0049] In this embodiment of the invention, when the pressure inside the pressure chamber 11 is too high, the oil pressure overcomes the elastic force of the return spring 205, pushes the stop block 202 away from the sealing gasket 203, and allows the high-pressure oil to enter the pressure relief pipe 201, and then be discharged through the oil drain pipe 204 to achieve pressure reduction. By rotating the screw 208 to drive the moving piston 206 to move in the pressure relief pipe 201, the preload of the return spring 205 can be adjusted, thereby controlling the pressure relief pressure.

[0050] like Figure 5As shown, the purification structure 4 includes a cover 401 fixed to one side of the front cover 1 and connected to the suction chamber 10, a waste pipe 406 installed at the bottom of the cover 401, a screw cap 407 threaded to the outside of the bottom of the waste pipe 406, an oil filter 402 fixed inside the cover 401, a spiral blade shaft 403 rotatably connected inside the oil filter 402, a first bevel gear 404 installed on one side of the spiral blade shaft 403, and a second bevel gear 405 fixed to one side of the transmission shaft 9 and meshing with the first bevel gear 404. The spiral blade shaft 403 extends to the outside of the cover 401 and connects to the first bevel gear 404. The waste pipe 406 extends to the inside of the cover 401 and connects to the oil filter 402. The outer wall of the waste pipe 406 is provided with an external thread, and the inside of the screw cap 407 is provided with an internal thread that cooperates with the external thread.

[0051] In this embodiment of the invention, the oil entering the suction chamber 10 is filtered by the oil filter screen 402. At the same time, the spiral blade shaft 403 is driven to rotate by the transmission shaft 9 through the second bevel gear 405 and the first bevel gear 404, pushing the sediment intercepted by the oil filter screen 402 into the waste pipe 406. The rotating cap 407 is used to remove it so that the waste in the waste pipe 406 can be cleaned, ensuring the cleanliness of the oil.

[0052] Working principle: The drive wheel 6 is connected to an external power source by bolts passing through the fixing bracket 3 to install it on the frame. The drive wheel 6 drives the drive shaft 9 to rotate, which in turn drives the internal gear 13 to mesh with the external gear ring 12 to rotate, forming the power to transport oil. Oil is introduced through the oil inlet 7 and discharged through the oil outlet 8. The suction chamber 10 is responsible for sucking in the oil introduced through the oil inlet 7. The pressure chamber 11 is used to pressurize the oil, and then the oil is discharged through the oil outlet 8.

[0053] When the internal pressure of pressure chamber 11 is too high, the oil pressure overcomes the elastic force of return spring 205, pushes stop 202 away from sealing gasket 203, and allows high-pressure oil to enter pressure relief pipe 201, and then discharge through oil drain pipe 204 to achieve pressure reduction. By rotating screw 208 to drive moving piston 206 to move in pressure relief pipe 201, the preload of return spring 205 can be adjusted, thereby controlling pressure relief.

[0054] The oil entering the suction chamber 10 is filtered through the oil filter screen 402. At the same time, the spiral blade shaft 403 is driven to rotate by the drive shaft 9 through the second bevel gear 405 and the first bevel gear 404, pushing the sediment intercepted by the oil filter screen 402 into the waste pipe 406. The rotating cap 407 can be used to remove the waste pipe 406 to clean the waste material in the waste pipe 406 and ensure the cleanliness of the oil.

[0055] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An oil pump for easy pressure reduction, comprising a front cover (1), characterized in that, Also includes: The fixing bracket (3) is fixed on both sides of the bottom end of the front cover (1), and an oil outlet (8) is provided on one side inside the front cover (1). An external gear ring (12) is installed inside the front cover (1), and an internal gear (13) is meshed inside the external gear ring (12), and a drive shaft (9) is fixed inside the internal gear (13). The rear cover (5) is installed on one side of the front cover (1), and a suction chamber (10) is provided on one side of the interior of the rear cover (5), and a pressure chamber (11) is provided on the other side of the interior of the rear cover (5). The purification structure (4) is located on one side of the front cover (1) and is used to filter the oil entering the device; The oil inlet (7) is installed on one side of the purification structure (4); The transmission wheel (6) is fixed to one side of the transmission shaft (9); The pressure relief structure (2) is fixed to the top of one side of the front cover (1). The pressure relief structure (2) includes a pressure relief pipe (201) fixed to the top of one side of the cover (1), a sealing gasket (203) installed inside the pressure relief pipe (201), a stop block (202) inserted inside the sealing gasket (203), a return spring (205) fixed to one side of the stop block (202), an oil drain pipe (204) fixed to one side of the pressure relief pipe (201), and a moving component disposed on one side of the return spring (205).

2. The oil pump for easy pressure reduction according to claim 1, characterized in that, The movable assembly includes a mounting base (207) threaded inside one side of the pressure relief pipe (201), a screw (208) threaded inside the mounting base (207), and a movable piston (206) rotatably connected to one side of the screw (208) and slidably connected to the pressure relief pipe (201).

3. The oil pump for easy pressure reduction according to claim 2, characterized in that, The stop (202) forms a telescopic structure with the sealing gasket (203) through the return spring (205), and the internal shape of the sealing gasket (203) matches the external shape of the stop (202).

4. The oil pump for easy pressure reduction according to claim 2, characterized in that, A seal is installed between the movable piston (206) and the pressure relief pipe (201), and the pressure relief pipe (201) is connected to the pressure chamber (11).

5. An oil pump for easy pressure reduction according to claim 1, characterized in that, The purification structure (4) includes a cover (401) fixed to one side of the front cover (1) and connected to the suction chamber (10), a waste pipe (406) installed at the bottom of the cover (401), a screw cap (407) threaded to the outside of the bottom of the waste pipe (406), an oil filter (402) fixed inside the cover (401), a spiral blade shaft (403) rotatably connected inside the oil filter (402), a first bevel gear (404) installed on one side of the spiral blade shaft (403), and a second bevel gear (405) fixed to one side of the transmission shaft (9) and meshing with the first bevel gear (404).

6. The oil pump for facilitating pressure reduction according to claim 5, wherein The spiral blade shaft (403) extends to the outside of the casing (401) and is connected to the first bevel gear (404), and the waste pipe (406) extends to the inside of the casing (401) and is connected to the oil filter (402).

7. An oil pump for easy pressure reduction according to claim 5, characterized in that, The outer wall of the waste pipe (406) is provided with external threads, and the inside of the cap (407) is provided with internal threads that cooperate with the external threads.

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