An oil filtering device and a circulating oil washing system for surface lubrication of a cooling fan rotor of a vehicle

Abstract

The application relates to the technical field of oil liquid filtration, and particularly relates to an oil filtering device and a circulating oil washing system for surface lubrication of a rotor of a cooling fan of an automobile, an oil storage device, an oil washing tank connected with the oil storage device, a switching assembly connected with a circulating pump arranged on the oil washing tank, two groups of liquid outlets formed on the switching assembly, two groups of filtering pipes arranged on the oil washing tank and communicated with the two groups of liquid outlets, the switching assembly capable of circulating and pumping waste oil into the two groups of filtering pipes, an oil washing waste discharge pipeline connected with the filtering pipes, cleaning oil capable of entering the filtering pipes through the oil washing waste discharge pipeline, a screen pipe coaxially and rotatably connected with the filtering pipe, and a top of the screen pipe being provided with a follow-up disc, the follow-up disc capable of driving the filtering pipe to rotate when the oil washing waste discharge pipeline in the filtering pipe is conducted, so that non-stop cleaning is realized, and the cleaning speed is improved.

Description

Technical Field

[0001] This invention relates to the field of oil filtration technology, specifically to an oil filtration device and a circulating oil washing system for lubricating the surface of an automotive cooling fan rotor. Background Technology

[0002] In the fields of machinery manufacturing and automotive parts processing, the rotor of an automotive cooling fan is a key moving component, and the surface lubrication quality of its components directly affects the operational stability and service life of the fan assembly. Currently, rotor surface lubrication mostly employs a circulating oil washing system, which cleans and lubricates the rotor surface through the circulation of oil. However, as the oil washing process continues, solid impurities such as metal shavings, dust, and sludge gradually mix into the oil, leading to a decrease in oil cleanliness, weakened lubrication effect, and even potential secondary damage to the rotor surface.

[0003] To address these issues, existing oil washing systems are typically equipped with filtration devices to filter and purify the circulating oil. Traditional filtration devices often employ a single filter element structure. When waste oil flows through the filter medium, impurities are trapped on the surface of the filter element. As filtration time increases, impurities accumulate, gradually clogging the filter element, leading to increased filtration resistance, higher system pressure, and a significant decrease in filtration efficiency. At this point, the system must be shut down for disassembly, cleaning, or replacement of the filter element, which not only interrupts the oil washing process and affects production efficiency but also increases labor maintenance costs and equipment downtime.

[0004] To address the shortcomings of single-element filter cartridges, some improved solutions employ alternating use of two sets of filter cartridges to achieve continuous filtration. However, existing alternating filtration systems often rely on independent control valve assemblies and sensor detection, resulting in complex structures, cumbersome control logic, and issues such as oil circuit congestion or switching lag during switching, making it difficult to guarantee seamless connection between the two sets of filter cartridges. Furthermore, filter cartridge cleaning typically requires external cleaning equipment or manual intervention, leading to low cleaning efficiency, inconsistent cleaning results, and the inability to complete online cleaning simultaneously during the filtration process. Summary of the Invention

[0005] The purpose of this invention is to provide an oil filtration device and a circulating oil washing system for lubricating the surface of an automotive cooling fan rotor, in order to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] An oil filtration device includes: an oil storage device and an oil washing tank connected to the oil storage device;

[0008] A switching assembly is connected to a circulating pump installed on the oil washing tank, and the switching assembly has two sets of liquid outlets.

[0009] Two sets of filter tubes are provided and installed on the oil washing tank. The two sets of filter tubes are respectively connected to the two sets of liquid outlets. The switching component can circulate and pump waste oil to the two sets of filter tubes.

[0010] The oil washing waste discharge pipeline is connected to the filter pipe, and the cleaning oil can enter the filter pipe through the oil washing waste discharge pipeline;

[0011] A screen tube is rotatably connected to the filter tube on the same axis. A follower plate is installed on the top of the screen tube, which can drive the filter tube to rotate when the oil washing waste discharge pipeline in the filter tube is open.

[0012] As a further aspect of the present invention: the switching assembly includes a switching tube body installed on the oil washing tank and a sealing plug that is slidably installed in the switching tube body, the sealing plug being connected to an electric telescopic rod disposed on the side of the switching tube body;

[0013] The switching pipe body is provided with a set of liquid inlets, which are connected to the circulating pump, and two sets of liquid outlets are provided on the switching pipe body.

[0014] As a further embodiment of the present invention: the top of the filter tube is connected to the liquid outlet, and a receiving pipe is provided at the bottom of the filter tube. The receiving pipe is coaxially arranged with the screen tube, so that the waste oil entering the filter tube from the top of the filter tube can pass through the screen tube and be discharged through the receiving pipe.

[0015] As a further aspect of the present invention: the oil washing waste discharge pipeline includes an oil inlet and an oil outlet disposed on the filter pipe. The cleaning oil entering the filter pipe through the oil inlet can impact the follower disk to drive the follower disk to rotate.

[0016] As a further aspect of the present invention, it also includes:

[0017] The drive structure is connected to the electric telescopic rod;

[0018] Two sets of automatic components are respectively connected to two sets of oil washing waste discharge pipelines on the two sets of filter tubes;

[0019] The switching valve structure is connected to the receiving pipe. The driving structure connects the switching valve structure and the two sets of driving components through a toothed belt, so that the oil washing and waste discharge pipelines on the two sets of filter pipes can be connected sequentially.

[0020] As a further embodiment of the present invention: the driving structure includes a limiting block and a spiral groove disposed on the telescopic end of the electric telescopic rod, wherein the limiting block is slidably connected to the limiting groove disposed on the switching tube body;

[0021] The end of the switching tube away from the electric telescopic rod is provided with a rotating sleeve and a connecting piece. The rotating sleeve is provided with an annular groove, and the annular groove is rotatably connected to the connecting piece.

[0022] A convex shaft is provided on the inner wall of the rotating sleeve, and the convex shaft can slide in the spiral groove.

[0023] As a further embodiment of the present invention: the transfer assembly includes a control valve connected to the oil washing waste discharge pipeline. The control valve is provided with a fixed ring and a rotating component. Both the fixed ring and the rotating component are provided with arc-shaped grooves. When the rotating component rotates relative to the fixed ring, the conduction area of ​​the arc-shaped grooves on the fixed ring and the rotating component will change.

[0024] The two sets of rotating parts on the two sets of transfer components are connected by two sets of meshing gears.

[0025] As a further embodiment of the present invention: the switching valve structure includes a ball valve connected to the receiving pipe and a valve core disposed within the ball valve.

[0026] A circulating oil washing system for lubricating the surface of an automotive cooling fan rotor includes the aforementioned oil filter device.

[0027] Compared with the prior art, the beneficial effects of the present invention are:

[0028] 1. This system enables automatic online cleaning of one set of filter tubes without shutting down or interrupting the overall filtration process, while ensuring that the other set of filter tubes continues to perform filtration tasks. This not only effectively avoids filtration interruptions caused by cleaning operations, significantly improving the equipment's continuous operation capability and processing efficiency, but also ensures the reliability of oil circuit control through precise switching of mechanical linkages, reducing the complexity and failure risk of the control system. This optimizes the overall equipment's operating rhythm and maintenance cycle, providing a strong guarantee for the efficient and stable operation of the waste oil treatment system.

[0029] 2. Through the dual action of centrifugal separation and oil flushing, this cleaning mechanism effectively removes impurities accumulated on the surface and inside of the filter tubes, preventing increased filtration resistance and abnormal pressure rises in the pipeline caused by screen clogging. Regular or on-demand automatic cleaning not only effectively maintains the permeability and filtration efficiency of the filter tubes but also significantly extends the service life of the screen tubes, reduces the frequency of manual maintenance and operating costs, thereby ensuring the long-term stable and efficient operation of the entire waste oil treatment system. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of one embodiment of an oil filtration device.

[0031] Figure 2This is a schematic diagram of the structure of the oil storage device after oil removal in one embodiment of the oil filtration device.

[0032] Figure 3 This is a schematic diagram of the structure of the oil storage device and the oil washing tank after removal in one embodiment of the oil filtration device.

[0033] Figure 4 This is a schematic diagram of the structure of the filter tube in one embodiment of an oil filtration device.

[0034] Figure 5 This is an exploded view of the structure of the filter pipe, screen pipe, and receiving pipe in one embodiment of an oil filtration device.

[0035] Figure 6 This is a schematic diagram of the switching component in one embodiment of an oil filtration device.

[0036] Figure 7 This is an exploded view of the switching component in one embodiment of an oil filtration device.

[0037] Figure 8 This is a schematic diagram of the structure of the transfer component in one embodiment of the oil filtration device.

[0038] Figure 9 This is an exploded view of a partial structure of the transfer component in one embodiment of an oil filtration device.

[0039] Figure 10 This is a schematic diagram of the structure of a ball valve in one embodiment of an oil filtration device.

[0040] In the diagram: 1. Oil storage device; 2. Oil washing tank; 3. Circulating pump; 4. Switching pipe; 401. Liquid inlet; 402. Liquid outlet; 403. Limiting groove; 5. Electric telescopic rod; 501. Limiting block; 502. Spiral groove; 6. Sealing plug; 7. Connecting piece; 8. Rotating sleeve; 801. Annular groove; 802. Protruding shaft; 9. Filter pipe; 901. Oil inlet; 902. Oil outlet; 10. Screen pipe; 11. Follower disc; 12. Receiving pipe; 13. Toothed belt; 14. Control valve; 15. Gear; 16. Fixing ring; 17. Rotating component; 18. Arc groove; 19. Connecting rod; 20. Valve core; 21. Ball valve. Detailed Implementation

[0041] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0042] Furthermore, elements in this invention are referred to as being "fixed to" or "set on" another element, which may be directly on the other element or may also include an intervening element. When an element is considered to be "connected" to another element, it may be directly connected to the other element or may also include an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementations.

[0043] Please see Figures 1 to 10 In this embodiment of the invention, an oil filtration device includes: an oil storage device 1, a switching component, a filter pipe 9, an oil washing and waste discharge pipe, and a screen pipe 10.

[0044] An oil washing tank 2 is connected to the oil storage device 1;

[0045] The switching assembly is connected to the circulating pump 3 installed on the oil washing tank 2, and two sets of liquid outlets 402 are formed on the switching assembly.

[0046] The switching assembly includes a switching tube 4 installed on the oil washing tank 2 and a sealing plug 6 that is slidably installed in the switching tube 4. The sealing plug 6 is connected to an electric telescopic rod 5 provided on the side of the switching tube 4.

[0047] The switching tube 4 is provided with a set of liquid inlets 401, which are connected to the circulating pump 3, and two sets of liquid outlets 402 are provided on the switching tube 4.

[0048] In this embodiment, the circulating pump 3 continuously pumps waste oil from the oil washing tank 2 to the inlet 401 of the switching pipe 4, allowing the waste oil to enter the switching pipe 4. At this time, by precisely controlling the extension and retraction of the electric telescopic rod 5, the sealing plug 6 can be driven to move smoothly along the axis within the switching pipe 4. When the sealing plug 6 is located on one side of the inlet 401, the inlet 401 will be connected to the outlet 402 on the other side, allowing the waste oil to be smoothly discharged from that outlet 402 and enter the corresponding filter pipe 9 for filtration. When the sealing plug 6 moves to another position under the drive of the electric telescopic rod 5, the previously connected outlet 402 is closed, and the other set of outlets 402 is opened, thus achieving flexible switching of the waste oil flow path. Through this control mechanism, waste oil can be reliably and controllably pumped alternately into the two sets of filter pipes 9. In this way, when the screen tube 10 in one set of filter tubes 9 becomes clogged due to the accumulation of impurities from long-term operation, the system can switch oil circuits to guide the waste oil into another set of filter tubes 9 to continue the filtration operation without shutting down, while simultaneously providing an opportunity to clean the clogged screen tube 10. This not only ensures the continuity and stability of the filtration process and avoids production interruptions caused by cleaning the screen tubes, but also significantly improves the automation level and operating efficiency of the system, extends the service life of the screen tubes, and thus improves the reliability and economy of the entire waste oil treatment system.

[0049] Please see Figures 4 to 5 The filter tubes 9 are provided in two sets and installed on the oil washing tank 2. The two sets of filter tubes 9 are respectively connected to the two sets of liquid outlets 402. The switching component can pump waste oil to the two sets of filter tubes 9.

[0050] The top of the filter tube 9 is connected to the liquid outlet 402, and the bottom of the filter tube 9 is provided with a receiving pipe 12. The receiving pipe 12 is coaxially arranged with the screen tube 10. Waste oil entering the filter tube 9 from the top of the filter tube 9 can pass through the screen tube 10 and be discharged through the receiving pipe 12.

[0051] In this application, the filter tube 9 is equipped with two switchable flow paths to achieve coordinated operation of filtration and cleaning / regeneration functions. The first flow path is a filtration pipeline mode. In this mode, the waste oil to be treated enters the tube body through the liquid inlet at the top of the filter tube 9 and flows through the outside of the screen tube 10. Because the surface of the screen tube 10 is covered with fine filter pores, the waste oil passes through the pores under pressure and enters the interior of the screen tube 10, while solid impurities contained in the waste oil are effectively intercepted and retained on the outer wall surface of the screen tube 10, thus achieving preliminary separation of oil and impurities. The oil purified by filtration through the screen tube 10 flows downwards along the inside of the screen tube and is finally discharged from the outlet at the bottom of the screen tube 10, and is then collected or transported to the next processing unit through the connected receiving pipe 12. Throughout the filtration process, the screen tube 10, as the core filtration element, determines the separation accuracy through the size and distribution of its filter pores, while the structural design of the filter tube 9 ensures smooth oil flow and sieving efficiency. By rationally setting the flow path, the system can stably retain suspended impurities in waste oil, ensuring that the cleanliness of the discharged oil meets the requirements of subsequent processes. At the same time, it provides a structural basis for the subsequent online cleaning mechanism, organically combining filtration and regeneration functions, and significantly improving the equipment's continuous operation capability and automation level.

[0052] Another flow path is an oil washing waste discharge pipeline, which is connected to the filter pipe 9, and the cleaning oil can enter the filter pipe 9 through the oil washing waste discharge pipeline;

[0053] The oil washing waste discharge pipeline includes an oil inlet 901 and an oil outlet 902 provided on the filter pipe 9. The cleaning oil entering the filter pipe 9 through the oil inlet 901 can impact the follower disk 11 to drive the follower disk 11 to rotate.

[0054] The screen tube 10 is rotatably connected to the filter tube 9 on the same axis. A follower plate 11 is installed on the top of the screen tube 10. When the oil washing waste discharge pipeline in the filter tube 9 is open, it can drive the filter tube 9 to rotate.

[0055] In this embodiment, after the filter pipe in the filter tube 9 is continuously open for a certain period of time, impurities in the waste oil gradually accumulate and adhere to the surface of the screen tube 10, affecting the filtration efficiency. At this time, the system automatically switches states, closing the filter pipe of this group of filter tubes 9, while simultaneously opening the oil washing waste discharge pipe and starting the cleaning program. The cleaning oil is pumped into the filter tube 9 through the oil inlet 901. During the entry process, the cleaning oil directly impacts and acts on the follower disk 11, driving it to accelerate its rotation. The rotation of the follower disk 11 then drives the screen tube 10 to rotate synchronously, so that the impurities adhering to the outer wall of the screen tube 10 are effectively thrown off by centrifugal force, detached from the surface of the screen tube 10, and fall onto the inner wall of the filter tube 9. At the same time, the cleaning oil continues to flow from top to bottom along the inside of the filter tube 9. With the help of the flushing force of the oil, the impurities that have been thrown off by centrifugal force but still adhere to the inner wall are further flushed away and finally discharged from the oil outlet 902 along with the cleaning oil. Through the combined action of centrifugal separation and oil flushing, this cleaning mechanism effectively removes impurities accumulated on the surface of the screen tube 10 and inside the filter tube, preventing increased filtration resistance and abnormal pressure rises in the pipeline caused by screen clogging. Regular or on-demand automatic cleaning not only effectively maintains the permeability and filtration efficiency of the screen tube 10 but also significantly extends its service life, reduces the frequency of manual maintenance and operating costs, thereby ensuring the long-term stable and efficient operation of the entire waste oil treatment system.

[0056] Please see Figures 2 to 3 , Figures 6 to 10 The oil filtration device further includes: a drive structure, a transfer assembly, and a switching valve structure.

[0057] The drive structure is connected to the electric telescopic rod 5. The drive structure includes a limiting block 501 and a spiral groove 502 disposed on the telescopic end of the electric telescopic rod 5. The limiting block 501 is slidably connected to the limiting groove 403 disposed on the switching tube 4.

[0058] The end of the switching tube 4 away from the electric telescopic rod 5 is provided with a rotating sleeve 8 and a connecting piece 7. The rotating sleeve 8 is provided with an annular groove 801, and the annular groove 801 is rotatably connected to the connecting piece 7.

[0059] A convex shaft 802 is provided on the inner wall of the rotating sleeve 8, and the convex shaft 802 can slide in the spiral groove 502.

[0060] In this embodiment, when the electric telescopic rod 5 drives the sealing plug 6 to move axially within the switching pipe 4 to change the waste oil flow path, the spiral groove 502 located at its actuating end changes position synchronously. Since the limiting block 501 and the limiting groove 403 always maintain a sliding fit, the actuating end of the electric telescopic rod 5 is effectively locked along its axis during movement, restricting its degree of freedom of rotation around the axis, thus precisely converting linear motion into controlled guide displacement. Under this locking action, when the electric telescopic rod 5 extends or retracts, the convex shaft 802 connected to the rotating sleeve 8 is forced to move along the guide trajectory of the spiral groove 502. Because the spiral groove 502 has a specific spiral angle and direction, the sliding of the convex shaft 802 will drive the rotating sleeve 8 to generate corresponding rotational motion around its axis. This rotational motion is synchronously transmitted to the transfer assembly and switching valve structure through the meshing toothed belt 13, thereby driving them to perform corresponding opening and closing actions, ultimately realizing the alternating conduction and switching of the filter pipeline and the oil washing waste discharge pipeline. Through this mechanical linkage mechanism, the system can automatically switch between filtration and cleaning states without the need for additional sensors or independent control units. This ensures the synchronization and reliability of the dual-pipeline switching, simplifies the control logic, and improves the response speed and repeatability of the switching action, thereby further enhancing the stability, coordination, and automation of the equipment under continuous operation.

[0061] Two sets of actuators are respectively connected to two sets of oil washing waste discharge pipelines on the two sets of filter pipes 9. Each actuator includes a control valve 14 connected to the oil washing waste discharge pipeline. The control valve 14 is provided with a fixed ring 16 and a rotating part 17. Both the fixed ring 16 and the rotating part 17 are provided with arc-shaped grooves 18. When the rotating part 17 rotates relative to the fixed ring 16, the conduction area of ​​the arc-shaped grooves 18 on the fixed ring 16 and the rotating part 17 will change.

[0062] The two sets of rotating parts 17 on the two sets of the transfer assembly are connected by two sets of meshing gears 15.

[0063] In this embodiment, each of the two sets of filter pipes 9 is equipped with a set of actuators to achieve independent control and precise switching of the cleaning oil path. Specifically, the oil inlets 901 of the two sets of filter pipes 9 are connected to the first set of actuators, while the oil outlets 902 are connected to the second set of actuators, forming a coordinated control structure. When the electric telescopic rod 5 drives the sealing plug 6 to switch the flow of waste oil from one set of filter pipes 9 (denoted as filter pipe a) to the other set of filter pipes 9 (denoted as filter pipe b), the toothed belt 13 will move accordingly, driving the rotating component 17 connected to it to rotate synchronously. The two sets of rotating components 17 are connected by two sets of gears 15 to ensure the coordination and consistency of the actions. During this process, the arc-shaped groove 18 on the rotating component 17 connected to the oil inlet 901 of filter pipe a is aligned and connected with the arc-shaped groove 18 on the fixed ring 16, allowing the cleaning oil to smoothly enter the interior of filter pipe a. Meanwhile, the arc-shaped groove 18 on the rotating component 17 connected to the oil inlet 901 of filter pipe b is misaligned and closed with the arc-shaped groove 18 on the fixed ring 16, blocking the passage of cleaning oil into filter pipe b. At this time, the cleaning oil flows directionally into filter pipe a, efficiently flushing and cleaning the impurities already attached to it. Simultaneously, another set of switching components connected to the oil outlet 902 performs the same switching action, allowing the cleaning oil in filter pipe a, along with the flushed impurities, to be smoothly discharged from the oil outlet 902, completing the entire cleaning cycle. For filter pipe b, it is now in a closed-circuit state, allowing waste oil to enter normally and perform filtration, achieving continuous interception and purification of impurities. Through the coordinated control of this split-function component, the system can automatically complete the online cleaning of one set of filter tubes 9 without stopping the overall filtration process, while ensuring that the other set of filter tubes 9 continues to perform filtration tasks. This design not only effectively avoids filtration interruptions caused by cleaning operations, significantly improving the continuous operation capability and processing efficiency of the equipment, but also ensures the reliability of oil circuit control through precise switching of mechanical linkages, reducing the complexity and failure risk of the control system, thereby optimizing the overall equipment's operating rhythm and maintenance cycle, and providing a strong guarantee for the efficient and stable operation of the waste oil treatment system.

[0064] Please see Figures 2 to 3 , Figure 10 The switching valve structure is connected to the receiving pipe 12. The drive structure connects the switching valve structure and the two sets of driving components through the toothed belt 13, so that the oil washing waste discharge pipelines on the two sets of filter pipes 9 can be connected in sequence. The switching valve structure includes a ball valve 21 connected to the receiving pipe 12 and a valve core 20 disposed in the ball valve 21. The ball valves 21 connecting the two sets of receiving pipes 12 are connected by a connecting rod 19.

[0065] In this embodiment, the switching valve structure and the switching components together constitute a precise and interconnected automatic control system, enabling coordinated scheduling of the working states of the two sets of filter tubes 9. When waste oil is switched into one set of filter tubes 9 (such as filter tube b) for filtration, the ball valve 21 at the bottom of that set of filter tubes 9 automatically switches to the open state under the action of the linkage mechanism, allowing the filtered clean oil to flow smoothly downwards and be discharged into the subsequent collection or treatment unit via the receiving pipe 12. This ensures that the set of filter tubes 9 can perform its filtration function normally, achieving continuous interception and separation of impurities in the waste oil. At the same time, under the control of the switching valve structure, the passages at both ends of the other set of filter tubes 9 (such as filter tube a) are simultaneously blocked, completely separating it from the main filtration process and entering an independent closed cleaning state. In this state, filter tube a only performs impurity removal. Through the circulation and centrifugal separation mechanism of the cleaning oil, the impurities attached to the surface of the screen tube 10 are completely peeled off and discharged outside the tube without causing any interference to the overall operation of the filtration system. Through this integrated control design, the two sets of filter tubes 9 can seamlessly switch and alternate between filtration and cleaning modes, ensuring the continuity of filtration operations while providing a safe and independent working environment for online cleaning. This control mechanism not only avoids the risk of cleaning oil mixing into the filter oil circuit during the cleaning process but also significantly improves the automation level and operational reliability of the equipment, effectively extends the service life of the screen tube 10, and reduces the frequency of manual intervention and maintenance costs, thus laying a solid foundation for the efficient, stable, and intelligent operation of the waste oil treatment system.

[0066] As an embodiment of the present invention, a circulating oil washing system for lubricating the surface of an automotive cooling fan rotor is also proposed, including the aforementioned oil filtration device.

[0067] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0068] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An oil filtration device, comprising: An oil storage device and an oil washing tank connected to the oil storage device; characterized in that it further includes: A switching assembly is connected to a circulating pump installed on the oil washing tank, and the switching assembly has two sets of liquid outlets. Two sets of filter tubes are provided and installed on the oil washing tank. The two sets of filter tubes are respectively connected to the two sets of liquid outlets. The switching component can circulate and pump waste oil to the two sets of filter tubes. The oil washing waste discharge pipeline is connected to the filter pipe, and the cleaning oil can enter the filter pipe through the oil washing waste discharge pipeline; A screen tube is rotatably connected to the filter tube on the same axis. A follower plate is installed on the top of the screen tube, which can drive the filter tube to rotate when the oil washing waste discharge pipeline in the filter tube is open.

2. The oil filtration device according to claim 1, characterized in that, The switching assembly includes a switching tube body installed on the oil washing tank and a sealing plug that is slidably installed in the switching tube body. The sealing plug is connected to an electric telescopic rod provided on the side of the switching tube body. The switching pipe body is provided with a set of liquid inlets, which are connected to the circulating pump, and two sets of liquid outlets are provided on the switching pipe body.

3. The oil filtration device according to claim 2, characterized in that, The top of the filter tube is connected to the liquid outlet, and a receiving pipe is provided at the bottom of the filter tube. The receiving pipe is coaxially arranged with the screen tube, so that the waste oil entering the filter tube from the top of the filter tube can pass through the screen tube and be discharged through the receiving pipe.

4. The oil filtration device according to claim 1, characterized in that, The oil washing waste discharge pipeline includes an oil inlet and an oil outlet installed on the filter pipe. The cleaning oil entering the filter pipe through the oil inlet can impact the follower disc to drive the follower disc to rotate.

5. An oil filtration device according to claim 3, characterized in that, Also includes: The drive structure is connected to the electric telescopic rod; Two sets of automatic components are respectively connected to two sets of oil washing waste discharge pipelines on the two sets of filter tubes; The switching valve structure is connected to the receiving pipe. The driving structure connects the switching valve structure and the two sets of driving components through a toothed belt, so that the oil washing and waste discharge pipelines on the two sets of filter pipes can be connected sequentially.

6. An oil filtration device according to claim 5, characterized in that, The drive structure includes a limiting block and a spiral groove disposed on the telescopic end of the electric telescopic rod, and the limiting block is slidably connected to the limiting groove disposed on the switching tube body; The end of the switching tube away from the electric telescopic rod is provided with a rotating sleeve and a connecting piece. The rotating sleeve is provided with an annular groove, and the annular groove is rotatably connected to the connecting piece. A convex shaft is provided on the inner wall of the rotating sleeve, and the convex shaft can slide in the spiral groove.

7. An oil filtration device according to claim 5, characterized in that, The transfer assembly includes a control valve connected to the oil washing waste discharge pipeline. The control valve is provided with a fixed ring and a rotating component. Both the fixed ring and the rotating component are provided with arc-shaped grooves. When the rotating component rotates relative to the fixed ring, the conduction area of ​​the arc-shaped grooves on the fixed ring and the rotating component will change. The two sets of rotating parts on the two sets of transfer components are connected by two sets of meshing gears.

8. An oil filtration device according to claim 5, characterized in that, The switching valve structure includes a ball valve connected to the receiving pipe and a valve core disposed within the ball valve.

9. A circulating oil washing system for lubricating the surface of an automotive cooling fan rotor, characterized in that, Includes the oil filtration device as described in any one of claims 1 to 8.

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