An oil pump capable of supporting long-time operation

Abstract

This invention discloses an oil pump capable of supporting long-term operation, comprising: a main body, including a pump casing and an oil pumping motor, wherein the pump casing is provided with a return oil pipe and a top outlet pipe, the top outlet pipe supplying oil to the top of the pump casing; and an internal cooling mechanism, including a spiral tube disposed on the inner wall of the pump casing and fixedly connected to the return oil pipe, the spiral tube having a plurality of liquid outlets. The oil pump provided by this invention, capable of supporting long-term operation, allows the oil returned by the return oil pipe to pass through the spiral tube conforming to the inner wall of the pump casing, so that the temperature is transferred through the remaining oil in the oil tank via the pump casing to cool the oil. While the oil flows along the spiral tube, a portion of the oil flows into the pump casing through the liquid outlets, mixing with the oil in the pump casing to further cool the oil.

Description

Technical Field

[0001] This invention relates to the field of oil pump technology, and more specifically to an oil pump that can support long-term operation. Background Technology

[0002] A car fuel pump is a type of fuel pump that supplies gasoline to the engine while the car is running to keep the engine running.

[0003] According to patent number CN110848056A, published on February 28, 2020, a fuel tank and fuel pump assembly structure, a fuel pump, a fuel tank, and an automobile are disclosed. The fuel tank and fuel pump assembly structure includes: a fuel tank for storing fuel; a fuel pump assembly for delivering fuel to the engine; a fuel pump flange fixedly connected to the fuel tank for fixing the fuel pump assembly; a fuel pump reservoir connected to the fuel pump flange via a fuel pump guide rod; and a fuel pump mounting base fixedly connected to the fuel tank for fixing the fuel pump reservoir. The fuel pump mounting base and the fuel pump reservoir cooperate such that when the fuel pump reservoir rotates relative to the fuel pump mounting base in a first direction, the fuel pump reservoir is secured to the fuel pump mounting base; and when the fuel pump reservoir rotates relative to the fuel pump mounting base in a second direction, the fuel pump reservoir is released from the fuel pump mounting base. The oil tank and oil pump mating structure according to the present invention can enhance the strength and rigidity of the oil tank while maintaining the detachability of the oil pump.

[0004] In the prior art, including the aforementioned patent, the oil pump outputs a large amount of oil to ensure a sufficient supply of oil. The excess oil is returned to the oil pump through the return oil pipe, which can keep the oil pump sufficient. However, the oil returning from the engine carries heat. During long-term operation, the oil carrying heat that is continuously returned to the oil pump without being cooled is pumped directly into the oil pump, which can easily accelerate the aging of the oil pump motor and affect its lifespan. Summary of the Invention

[0005] The purpose of this invention is to provide an oil pump that can support long-term operation, aiming to solve the problem that the oil flowing back from the engine will increase the operating temperature of the oil pumping motor.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an oil pump capable of supporting long-term operation, comprising:

[0007] The body includes a pump casing and an oil pumping motor. The pump casing is provided with an oil return pipe and an outlet pipe, and the outlet pipe supplies oil to the top of the pump casing.

[0008] An internal cooling mechanism includes a spiral tube disposed on the inner wall of the pump housing and fixedly connected to the oil return pipe, and the spiral tube has several liquid outlets.

[0009] Preferably, an outer cooling mechanism is also included, comprising a limiting cover fitted over the pump casing, with a cooling channel clamped between the two, and a spiral plate disposed within the cooling channel.

[0010] Preferably, a cooling assembly is also included, which encloses a dispersion plate, and a top layer channel is provided between the dispersion plate and the top plate on the pump casing, wherein:

[0011] The top channel connects to the cooling channel as the oil rises;

[0012] The top channel disconnects from the cooling channel as the oil descends.

[0013] Preferably, the limiting cover is provided with baffles arranged in a circumferential array, and the first end of each baffle is provided with a float and a bending angle. The baffles slide along the limiting cover as the oil changes, wherein:

[0014] The shielding plate is fitted to the limiting cover so that the bending angle is fitted to the dispersion plate;

[0015] The shielding plate flips along the limiting cover so that the bending angle is away from the dispersing plate.

[0016] Preferably, a base plate is provided on the pump housing, and an elastic element is provided between the base plate and the baffle plate.

[0017] Preferably, the pumping motor is provided with a secondary oil outlet pipe, the secondary oil outlet pipe is provided with a water jet outlet, the top outlet pipe is provided with a diffusion hood, the water jet outlet is located inside the diffusion hood, and the top plate is provided with a dispersion plate.

[0018] Preferably, the dispersion plate is provided with a counter-flush circular groove, and the oil pumping motor includes the following two stations:

[0019] First station: The pumping motor outputs low power to allow the liquid to be discharged from the top pipe into the counter-flushing circular tank and diffused.

[0020] Second station: The pumping motor outputs high power to cause the liquid to be discharged from the top pipe into the counter-flushing groove and then back to counter-flushing.

[0021] Preferably, the pumping motor is provided with a guide cover, which collects liquid from the outside or into the pump casing as the pumping motor switches positions.

[0022] Preferably, the guide cover is provided with elastic sheets arranged in a circumferential array. The elastic sheets bend as the suction force of the oil pump motor increases, so as to draw liquid into the pump casing.

[0023] Preferably, the pump housing is provided with a filter screen facing the guide cover, and the pump housing is provided with a one-way valve that supplies oil into the pump housing.

[0024] In the above technical solution, the oil pump provided by the present invention, which can support long-term operation, has the following beneficial effects: the oil returned by the return oil pipe passes through a spiral tube that fits the inner wall of the pump casing, so as to transfer the temperature through the remaining oil in the oil tank through the pump casing to cool the oil. While the oil flows along the spiral tube, some oil will flow into the pump casing through the outlet and mix with the oil in the pump casing to further cool the oil. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0026] Figure 1 This is an overall schematic diagram provided for an embodiment of the present invention;

[0027] Figure 2 This is an overall exploded view provided for an embodiment of the present invention;

[0028] Figure 3 This is a schematic diagram of the internal structure of the body provided in an embodiment of the present invention;

[0029] Figure 4 This is a schematic cross-sectional view provided for an embodiment of the present invention;

[0030] Figure 5 for Figure 4 Enlarged diagram of point A in the middle.

[0031] Explanation of reference numerals in the attached figures:

[0032] 1. Main body; 11. Pumping motor; 111. Main oil outlet pipe; 112. Auxiliary oil outlet pipe; 113. Water jet outlet; 114. Return oil pipe; 12. Pump casing; 121. Casing bottom plate; 122. Filter screen; 123. Check valve; 13. Top outlet pipe; 131. Top discharge port; 14. Expansion cover; 15. Guide cover; 151. Elastic sheet; 16. Top plate; 2. Outer cooling mechanism; 21. Restriction cover; 211. Exchange port; 22. Baffle plate; 221. Float; 222. Bending angle; 223. Opening slot; 224. Base plate; 23. Spiral plate; 3. Continuous cooling assembly; 31. Dispersion plate; 32. Counter-current circular groove; 33. Dispersion liquid plate; 4. Internal cooling mechanism; 41. Spiral tube; 42. Liquid outlet. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the described embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0034] like Figure 1-5 As shown, an oil pump capable of supporting long-term operation includes:

[0035] The main body 1 includes a pump housing 12 and an oil pumping motor 11. The pump housing 12 is provided with an oil return pipe 114 and an outlet pipe 13, and the outlet pipe 13 supplies oil to the top of the pump housing 12.

[0036] The internal cooling mechanism 4 includes a spiral tube 41 disposed on the inner wall of the pump housing 12 and fixedly connected to the return oil pipe 114, and the spiral tube 41 is provided with a plurality of liquid outlets 42.

[0037] Specifically, the oil pump motor 11 is equipped with a main oil outlet pipe 111, which supplies oil to the engine. The return oil pipe 114 is used to receive excess oil flowing back from the engine. The top outlet pipe 13 supplies oil to the top of the pump housing 12. When there is a lot of oil in the oil tank, which covers the pump housing 12, the oil flows out of the pump housing 12 to promote the flow of oil in the oil tank and cool down the pump housing 12. When there is less oil in the oil tank, which does not cover the pump housing 12, the oil flows out from the top of the pump housing 12 and flows along the outer wall of the pump housing 12 to maintain the cooling effect. The spiral tube 41 is attached to the pump housing 12, and the oil in the return oil pipe 114 flows to the spiral tube 41 to be cooled by the pump housing 12. The oil pump motor 11 and the main body 1 are cooled by the cooling to extend their service life.

[0038] Body 1 is a fuel pump.

[0039] In the above technical solution, the oil returned by the return pipe 114 passes through the spiral tube 41 that is attached to the inner wall of the pump housing 12, so that the temperature is transferred through the pump housing 12 by the remaining oil in the oil tank to cool the oil. While the oil flows along the spiral tube 41, some of the oil will flow into the pump housing 12 through the outlet 42 to mix with the oil in the pump housing 12 to further cool the oil.

[0040] As one embodiment of the present invention, it also includes an outer cooling mechanism 2, which includes a limiting cover 21 covering the pump housing 12, with a cooling channel clamped between the two, and a spiral plate 23 disposed in the cooling channel.

[0041] Specifically, when the oil level in the tank is low and the top pipe 13 supplies oil to the top of the pump housing 12, the oil will flow into the cooling space and along the spiral plate 23. The first end of the limiting cover 21 has an outlet (for...). Figure 4 For reference, the first end is the lower end). The oil will flow along the spiral plate 23 and flow out from the outlet. The oil flowing along the spiral plate 23 ensures oil exchange and increases the cooling efficiency of the pump casing 12.

[0042] When there is a lot of oil in the tank, the oil flows out of the pump housing 12 to promote the flow of oil in the tank and cool down the pump housing 12. When there is a little oil in the tank, the oil flows out from the top of the pump housing 12 and flows along the spiral plate 23 to flow out from the outlet to maintain the cooling effect. The spiral tube 41 is attached to the pump housing 12, and the oil in the return oil pipe 114 flows to the spiral tube 41 to be cooled by the pump housing 12.

[0043] As one embodiment of the present invention, it further includes a cooling assembly 3, which encloses a dispersion plate 31, and a top layer channel is provided between the dispersion plate 31 and the top plate 16 on the pump housing 12, wherein:

[0044] The top channel connects to the cooling channel as the oil rises;

[0045] The top channel disconnects from the cooling channel as the oil descends.

[0046] Specifically, the dispersion plate 31 is installed on the main oil outlet pipe 111. The dispersion plate 31 and the top plate 16 are clamped together to form a top channel. When the oil tank is replenished and the oil in the tank is above the pump casing 12, the top channel will be connected to the cooling channel. At this time, the oil output from the top pipe 13 will flow into the cooling channel along the top channel to increase the flow rate through the spiral plate 23 for efficient cooling. As the oil in the tank decreases with use, when the oil level is lower than the pump casing 12, the top channel will disconnect from the cooling channel. At this time, some oil will still flow along the spiral plate 23, while the other part of the oil will flow directly out of the cooling channel and into the oil tank to increase the oil level in the tank and reduce the retention of oil, thereby reducing the impact on the oil level monitoring.

[0047] When there is a lot of oil in the tank, the oil output from the top pipe 13 will flow into the cooling channel along the top channel to cool the pump casing 12. When there is a little oil in the tank, the oil flows out from the top of the pump casing 12. Some of the oil will flow along the spiral plate 23 and flow out from the outlet, while the other part of the oil will flow directly out of the cooling channel and into the tank to maintain the cooling effect. The spiral tube 41 is attached to the pump casing 12, and the oil in the return oil pipe 114 flows to the spiral tube 41 to be cooled by the pump casing 12.

[0048] As one embodiment of the present invention, a baffle plate 22 is movably arranged in a circular array on the limiting cover 21. A float 221 and a bending angle 222 are provided at the first end of the baffle plate 22. The baffle plate 22 slides along the limiting cover 21 as the oil level changes, wherein:

[0049] The baffle 22 is attached to the limiting cover 21 so that the bending angle 222 is attached to the dispersion plate 31;

[0050] The baffle 22 is flipped along the limiting cover 21 so that the bending angle 222 is away from the dispersion plate 31;

[0051] A base plate 224 is provided on the pump housing 12, and an elastic element is provided between the base plate 224 and the baffle plate 22.

[0052] Specifically, with Figure 2 For reference, the first end is the upper end, the first end of the baffle plate 22. The elastic element (which can be a spring) on ​​the substrate 224 will continuously pull the baffle plate 22 closer to the substrate 224. The bending angle 222 is made of elastic material and can deform slightly. When there is a lot of oil in the tank, the float 221 will generate buoyancy as the oil rises to overcome the pull of the elastic element. After being pulled, the bending angle 222 will detach from the limiting cover 21 and deform slightly to fit the dispersing plate 31, thereby connecting the top layer channel and the cooling channel and increasing the flow rate of the spiral plate 23. When there is a little oil in the tank, the elastic element will pull the baffle plate 22 closer to the substrate 224 so that the baffle plate 22 will flip and tilt to detach from the limiting cover 21. At this time, the bending angle 222 will fit the limiting cover 21, thereby disconnecting the connection between the top layer channel and the cooling channel. The top layer channel and the cooling channel can be connected or disconnected to adapt to the situation of more or less oil in the tank.

[0053] When there is a lot of oil in the tank, the float 221 will generate buoyancy as the oil rises to overcome the pull of the elastic element, thereby connecting the top channel and the cooling channel. The oil output from the top pipe 13 will flow into the cooling channel along the top channel to cool the pump housing 12. When there is less oil in the tank, the elastic element will pull the baffle 22 closer to the base plate 224, thereby disconnecting the connection between the top channel and the cooling channel. The oil flows out from the top of the pump housing 12. Some of the oil will flow along the spiral plate 23 and flow out from the outlet, while the other part of the oil will flow directly out of the cooling channel and into the tank to maintain the cooling effect. The spiral tube 41 is attached to the pump housing 12, and the oil in the return oil pipe 114 flows to the spiral tube 41 to be cooled by the pump housing 12.

[0054] As one embodiment of the present invention, the baffle plate 22 is provided with an opening groove 223 and the limiting cover 21 is provided with a commutation port 211. The opening groove 223 and the commutation port 211 are staggered and sealed as the baffle plate 22 is attached to the limiting cover 21.

[0055] Specifically, when the baffle 22 is tilted, it is away from the limiting cover 21. At this time, the exchange port 211 is open, so that the oil on the spiral plate 23 flows into the oil tank from the exchange port 211, thereby further reducing the impact on the liquid level monitoring. When the baffle 22 is attached to the limiting cover 21, the opening groove 223 and the exchange port 211 are staggered and blocked to maintain the blocking state of the cooling channel.

[0056] When there is a lot of oil in the tank, the float 221 will generate buoyancy as the oil rises to overcome the pull of the elastic element. The opening slot 223 and the exchange port 211 are staggered and blocked, thereby connecting the top channel and the cooling channel. The oil output from the top pipe 13 will flow into the cooling channel along the top channel to cool the pump housing 12. When there is a little oil in the tank, the elastic element will pull the baffle 22 closer to the base plate 224. The baffle 22 moves away from the limiting cover 21. At this time, the exchange port 211 is in an open state, thereby disconnecting the connection between the top channel and the cooling channel. The oil flows out from the top of the pump housing 12. Some of the oil will flow along the spiral plate 23 and flow out from the outlet, while the other part of the oil will flow directly out of the cooling channel and into the tank to maintain the cooling effect. The spiral tube 41 is attached to the pump housing 12. The oil in the return oil pipe 114 flows to the spiral tube 41 to be cooled by the pump housing 12.

[0057] As an embodiment of the present invention, the oil pumping motor 11 is provided with a secondary oil outlet pipe 112, the secondary oil outlet pipe 112 is provided with a water jet outlet 113, the top outlet pipe 13 is provided with a diffusion cover 14, the water jet outlet 113 is located inside the diffusion cover 14, and the top plate 16 is provided with a dispersion plate 33.

[0058] Specifically, the water jet outlet 113 has a water outlet diameter of 3mm to 45mm. The expansion cover 14 is connected to the oil tank. When the oil pumping motor 11 is working, it supplies oil to the main oil outlet pipe 111 and also supplies oil to the auxiliary oil outlet pipe 112, so that the oil is sprayed out from the water jet outlet 113. The rapidly flowing water jet will use the venturi effect to draw the oil in the oil tank through the conical structure of the expansion cover 14, so as to supply oil to the top drain port 131 opened on the top plate 16 to cool the limiting cover 21. The output oil will diffuse along the dispersion plate 33. The dispersion plate 33 is a curved arc strip to diffuse the oil and make it flow evenly, reducing the occurrence of oil gaps.

[0059] When there is a lot of oil in the tank, the float 221 will generate buoyancy as the oil rises to overcome the pull of the elastic element. The opening slot 223 and the exchange port 211 are staggered and blocked, thereby connecting the top channel and the cooling channel. The oil is sprayed out from the water jet outlet 113, which drives the oil in the tank to be transported to the top drain port 131 opened on the top plate 16. The oil output from the top pipe 13 will flow into the cooling channel along the top channel to cool the pump casing 12. When there is a little oil in the tank, the elastic element will pull... The baffle 22 moves closer to the substrate 224 and away from the limiting cover 21. At this time, the exchange port 211 is in an open state, thereby disconnecting the top channel and the cooling channel. The oil flows out from the top of the pump housing 12. Some of the oil flows along the spiral plate 23 and flows out from the outlet, while the other part of the oil flows directly out of the cooling channel and into the oil tank to maintain the cooling effect. The spiral tube 41 is attached to the pump housing 12, and the oil in the return oil pipe 114 flows to the spiral tube 41 to be cooled by the pump housing 12.

[0060] As one embodiment of the present invention, the dispersion plate 31 is provided with a counter-current circular groove 32, and the oil pumping motor 11 includes the following two stations:

[0061] First station: The pumping motor 11 outputs low power to make the liquid outlet pipe 13 discharge and diffuse into the anti-flushing circular groove 32;

[0062] Second station: The pumping motor 11 outputs high power to make the liquid from the top pipe 13 flow out to the counter-flushing groove 32 and back to counter-flushing.

[0063] Specifically, when the engine is accelerating, the oil pumping motor 11 switches to the second position, which increases the efficiency of oil pumping. At this time, the oil output of both the main oil outlet pipe 111 and the auxiliary oil outlet pipe 112 increases, and the oil discharged from the top pipe 13 increases, so as to flush the oil into the anti-flushing circular groove 32. At this time, the impact speed is fast, and the oil will be guided back along the anti-flushing circular groove 32 to reduce the oil output of the top pipe 13, thereby reducing the oil pumped by the expansion cover 14 and reducing the burden of oil pumping motor 11. When the oil pumping motor 11 is in the first position with low power output, the impact force of the oil discharged from the top pipe 13 is small, and the oil can diffuse along the anti-flushing circular groove 32.

[0064] When there is a lot of oil in the tank, the float 221 will generate buoyancy as the oil rises to overcome the pull of the elastic element. The opening slot 223 and the exchange port 211 are staggered and blocked, thereby connecting the top channel and the cooling channel. The oil is sprayed out from the water jet outlet 113, which drives the oil in the tank to be transported to the top drain port 131 opened on the top plate 16. The oil output from the top pipe 13 will flow into the cooling channel along the top channel to cool the pump casing 12. When there is a little oil in the tank, the elastic element will pull the baffle 22 closer to the base plate 224. The baffle 22 moves away from the limiting cover 21. At this time, the exchange port 211 In the open state, the top channel and the cooling channel are disconnected. Oil flows out from the top of the pump housing 12. Some oil flows along the spiral plate 23 and flows out from the outlet, while the other part flows directly out of the cooling channel and into the oil tank to maintain the cooling effect. The spiral tube 41 is attached to the pump housing 12. The oil in the return oil pipe 114 flows to the spiral tube 41 to be cooled by the pump housing 12. When the engine is accelerating, the amount of oil discharged from the top tube 13 will increase to flush the oil into the counter-current groove 32. At this time, the impact speed is fast, and the oil will be guided back along the counter-current groove 32 to reduce the amount of oil discharged from the top tube 13.

[0065] As an embodiment of the present invention, a filter screen 122 facing the guide cover 15 is provided on the pump housing 12, and a one-way valve 123 is provided on the pump housing 12, which supplies oil to the pump housing 12.

[0066] Specifically, the filter screen 122 is installed on the bottom plate 121 of the pump housing 12 to filter the oil and reduce impurities from entering the pump motor 11, thereby protecting the pump motor 11. The one-way valve 123 is also installed on the bottom plate 121 to fill the pump housing 12 with oil during refueling, ensuring that there is a certain amount of oil in the pump housing 12, so as to ensure smooth oil suction by the pump motor 11 through the surface tension of the oil.

[0067] As the preferred embodiment of the present invention, the oil pumping motor 11 is provided with a guide cover 15, which collects liquid to the outside or into the pump casing 12 as the oil pumping motor 11 switches positions.

[0068] The guide cover 15 is provided with elastic sheets 151 arranged in a circumferential array. The elastic sheets 151 bend as the suction force of the oil pump motor 11 increases, so as to draw liquid into the pump housing 12.

[0069] Specifically, the elastic sheet 151 is disposed in the slot opened on the guide cover 15. When the oil pumping motor 11 switches to the second station for high-power oil suction, the suction force generated by the oil pumping motor 11 will drive the elastic sheet 151 to flip and open the slot. At this time, the oil in the pump housing 12 will also be sucked by the oil pumping motor 11 to further reduce the burden on the oil pumping motor 11.

[0070] When there is a lot of oil in the tank, the float 221 will generate buoyancy as the oil rises to overcome the pull of the elastic element. The opening slot 223 and the exchange port 211 are staggered and blocked, thereby connecting the top channel and the cooling channel. The oil is sprayed out from the water jet outlet 113, which drives the oil in the tank to be transported to the top drain port 131 opened on the top plate 16. The oil output from the top pipe 13 will flow into the cooling channel along the top channel to cool the pump casing 12. When there is a little oil in the tank, the elastic element will pull the baffle 22 closer to the base plate 224. The baffle 22 moves away from the limiting cover 21. At this time, the exchange port 211 is in an open state, thereby disconnecting the connection between the top channel and the cooling channel. The oil flows from the top channel 221 to the bottom channel 224. Oil flows out from the top of the pump housing 12. Some of the oil flows along the spiral plate 23 and flows out from the outlet, while the other part of the oil flows directly out of the cooling channel and into the oil tank to maintain the cooling effect. The spiral tube 41 is attached to the pump housing 12, and the oil in the return oil pipe 114 flows to the spiral tube 41 to be cooled by the pump housing 12. When the engine is accelerating, the amount of oil discharged from the top tube 13 will increase to flush the oil into the counter-flushing groove 32. At this time, the impact speed is fast, and the oil will be guided back along the counter-flushing groove 32 to reduce the amount of oil discharged from the top tube 13. At the same time, the suction force generated by the oil pumping motor 11 will drive the elastic plate 151 to flip to open the groove. At this time, the oil in the pump housing 12 will also be sucked by the oil pumping motor 11.

[0071] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An oil pump capable of supporting long-term operation, characterized in that, include: The main body (1) includes a pump housing (12) and an oil pumping motor (11). The pump housing (12) is provided with an oil return pipe (114) and an outlet pipe (13), and the outlet pipe (13) supplies oil to the top of the pump housing (12). The internal cooling mechanism (4) includes a spiral tube (41) disposed on the inner wall of the pump housing (12) and fixedly connected to the return oil pipe (114), and the spiral tube (41) is provided with a plurality of liquid outlets (42). It also includes an outer cooling mechanism (2), which includes a limiting cover (21) covering the pump housing (12), and a cooling channel is clamped between the two, and a spiral plate (23) is provided in the cooling channel. It also includes a continuous cooling assembly (3), which includes a dispersion plate (31). A baffle plate (22) is movably arranged in a circular array on the limiting cover (21). The first end of the baffle plate (22) is provided with a float (221) and a bending angle (222). The baffle plate (22) slides along the limiting cover (21) as the oil changes, wherein: The shield (22) is attached to the limiting cover (21) so that the bending angle (222) is attached to the dispersing plate (31); The shield (22) is flipped along the limiting cover (21) so that the bending angle (222) is away from the dispersing plate (31).

2. The oil pump capable of supporting long-term operation according to claim 1, characterized in that, A top-level channel is provided between the dispersion plate (31) and the top plate (16) on the pump casing (12), wherein: The top channel connects to the cooling channel as the oil rises; The top channel disconnects from the cooling channel as the oil descends.

3. The oil pump capable of supporting long-term operation according to claim 1, characterized in that, A base plate (224) is provided on the pump housing (12), and an elastic element is provided between the base plate (224) and the baffle plate (22).

4. An oil pump capable of supporting long-term operation according to claim 2, characterized in that, The pumping motor (11) is provided with a secondary oil outlet pipe (112), the secondary oil outlet pipe (112) is provided with a water jet outlet (113), the top outlet pipe (13) is provided with a diffusion cover (14), the water jet outlet (113) is located inside the diffusion cover (14), and the top plate (16) is provided with a dispersion plate (33).

5. An oil pump capable of supporting long-term operation according to claim 4, characterized in that, The dispersion plate (31) is provided with a counter-flush circular groove (32), and the oil pumping motor (11) includes the following two stations: First station: The pumping motor (11) outputs low power to cause the ejector pipe (13) to discharge liquid into the counter-flowing groove (32) and diffuse it; Second station: The pumping motor (11) outputs high power to make the ejector pipe (13) discharge liquid into the counter-flushing groove (32) and return to the counter-flushing.

6. An oil pump capable of supporting long-term operation according to claim 5, characterized in that, The oil pumping motor (11) is provided with a guide cover (15), which collects liquid from the outside or into the pump casing (12) as the oil pumping motor (11) switches positions.

7. An oil pump capable of supporting long-term operation according to claim 6, characterized in that, The guide cover (15) is provided with elastic sheets (151) arranged in a circumferential array. The elastic sheets (151) bend as the suction force of the oil pumping motor (11) increases, so as to draw liquid into the pump casing (12).

8. An oil pump capable of supporting long-term operation according to claim 7, characterized in that, A filter screen (122) facing the guide cover (15) is provided on the pump housing (12), and a one-way valve (123) is provided on the pump housing (12) to supply oil into the pump housing (12).

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