A multi-stage filtration lubricating oil production device

Abstract

The utility model relates to lubricating oil production device technical field, especially a kind of multistage filtration's lubricating oil production device, including filter tank, circular ring filter plate, circular table filter plate, inclined discharge pipe, vertical discharge pipe, waste tank, solenoid control valve, backflushing pipe, cleaning brush, feed pipe, discharge pipe, rotating assembly, flushing assembly and drive assembly, the inside fixed setting of filter tank has multiple circular ring filter plates, circular ring filter plate's middle fixed setting has circular table filter plate, the lateral wall of filter tank is provided with multiple inclined discharge pipes, the side of filter tank is provided with vertical discharge pipe, the inside of filter tank is provided with multiple backflushing pipes, the inside of filter tank is provided with multiple cleaning brushes, a kind of multistage filtration's lubricating oil production device in the use process of the utility model, the depth integration of the device through three-dimensional filter frame and reciprocating backflushing mechanism, can solve the problem of the influence of flow efficiency caused by the impurity accumulation on filter plate surface.

Description

Technical Field

[0001] This utility model relates to the technical field of lubricating oil production equipment, and in particular to a multi-stage filtration lubricating oil production equipment. Background Technology

[0002] Lubricating oil is a liquid or semi-solid lubricant used in various types of automobiles and mechanical equipment to reduce friction and protect machinery and processed parts. It mainly plays the roles of lubrication, auxiliary cooling, rust prevention, cleaning, sealing and buffering. During the production process, the lubricating oil needs to be filtered using a filtration device.

[0003] When lubricating oil production equipment is in use, existing lubricating oil filtration equipment typically adopts a single-stage filtration structure, with its filter components mostly being planar filter screens. At the same time, some lubricating oil filtration equipment uses a backwashing structure to extend the service life of the filter screen. However, the backwashing mechanism is a fixed nozzle, with a limited rinsing coverage area. Such traditional equipment has obvious technical defects in the precision production scenario of lubricating oil. When processing lubricating oil containing viscous impurities such as gum and asphalt, the planar filter screen is prone to a sharp reduction in flow cross-sectional area due to impurity accumulation, requiring frequent shutdowns for cleaning. On the other hand, the fixed backwashing structure, due to its single rinsing angle, is difficult to thoroughly remove impurities adhering to the micropores, resulting in reduced filtration accuracy and failing to meet the fine filtration requirements of high-end lubricating oil products.

[0004] Therefore, to address the problem of impurity accumulation on the filter plate surface affecting flow efficiency when processing lubricating oil with viscous impurities, a multi-stage filtration lubricating oil production device can be designed. When this device is in use, during multi-stage filtration of lubricating oil containing viscous impurities, the lubricating oil is first added to the filter tank through the feed pipe. The lubricating oil then passes sequentially through three sets of vertically arranged filter structures, each consisting of a frustum-shaped filter plate and an annular filter plate. The filter holes in the top and bottom filter structures are arranged from largest to smallest. When impurities accumulate on the filter plate surface to the point of affecting flow efficiency, the impurities intercepted on the frustum-shaped filter plate slide down the conical inclined surface under gravity to the upper surface of the annular filter plate, forming an annular impurity band. At this point, multiple sets of cleaning brushes are driven to rotate synchronously. Each cleaning brush consists of nylon bristles and a stainless steel frame, effectively removing tiny particles adhering to the filter hole surface. The reciprocating backwash pipe forms a fan-shaped backwash coverage area. This oscillating backwash design allows the cleaning fluid to penetrate the filter plate at multiple angles, thoroughly flushing out sticky impurities such as colloids and asphalt that clog the micropores. During the cleaning process, the removed impurities gather towards the edge of the tank under the centrifugal force of the rotating cleaning brush. When the electromagnetic control valves on the multiple inclined discharge pipes are opened, the impurities flow into the inclined discharge pipes with the cleaning fluid. The inclined design of this pipe, combined with the Teflon coating on the surface, ensures that the impurities quickly slide down to the vertical discharge pipe under gravity and finally flow into the waste tank. In summary, when treating lubricating oil containing sticky impurities such as colloids and asphalt, this device, through the deep integration of a three-dimensional filtration architecture and a reciprocating backwash mechanism, can effectively remove impurities adhering to the micropores of the filter screen, improve the filtration accuracy of the filter screen, and thus solve the problem of impurity accumulation on the filter plate surface affecting the flow efficiency, meeting the fine filtration requirements of high-end lubricating oil products. Utility Model Content

[0005] To overcome the problem that when lubricating oil production equipment is used to process lubricating oil containing viscous impurities such as gum and asphalt, the flat filter screen is prone to a sharp reduction in flow cross-sectional area due to the accumulation of impurities, requiring frequent shutdowns for cleaning. Furthermore, the fixed backwashing structure has a single washing angle, which makes it difficult to solve the problem of impurity accumulation on the filter plate surface affecting flow efficiency.

[0006] The technical solution of this utility model is as follows: a multi-stage filtration lubricating oil production device, comprising a filter tank, an annular filter plate, a frustum-shaped filter plate, an inclined discharge pipe, a vertical discharge pipe, a waste tank, an electromagnetic control valve, a backwash pipe, a cleaning brush, a feed pipe, a discharge pipe, a rotating assembly, a flushing assembly, and a drive assembly. Multiple sets of annular filter plates are fixedly arranged inside the filter tank, with a frustum-shaped filter plate fixedly arranged in the middle of each annular filter plate. Multiple sets of inclined discharge pipes are arranged on the side wall of the filter tank. A vertical discharge pipe is arranged on one side of the filter tank, with a waste tank located at the lower end of the vertical discharge pipe. An electromagnetic control valve is installed inside the upper end of the inclined discharge pipe. Multiple sets of backwash pipes and cleaning brushes are arranged inside the filter tank. A feed pipe is connected through the top of the filter tank, and a discharge pipe is connected through the bottom of the filter tank. A rotating assembly is located at the bottom of the filter tank. A flushing assembly is located on one side of the filter tank, and a drive assembly is located on the other side of the filter tank.

[0007] Preferably, when the lubricating oil production unit is in use, during multi-stage filtration of lubricating oil containing viscous impurities, the lubricating oil is first added to the inside of the filter tank through the feed pipe. The lubricating oil then passes through three sets of vertically arranged filter structures, each consisting of a frustum-shaped filter plate and an annular filter plate. The filter holes in the top and bottom filter structures are arranged from largest to smallest. During this process, the lubricating oil passes through the top filter plate, effectively intercepting large particles; the middle filter plate removes medium-sized particles; and the bottom filter plate achieves deep filtration. The lubricating oil, after multi-stage filtration, is finally discharged through the discharge pipe. When impurities accumulate on the filter plate surface to the point of affecting flow efficiency, the impurities intercepted on the frustum-shaped filter plate slide down the conical inclined surface under gravity to the upper surface of the annular filter plate, forming an annular impurity band. At this time, multiple sets of cleaning brushes are driven to rotate synchronously. Each set of cleaning brushes consists of nylon bristles and a stainless steel frame, effectively removing impurities. Tiny particles adhering to the surface of the filter pores are simultaneously driven by the backwashing pipe to reciprocate, forming a fan-shaped rinsing coverage area. This oscillating backwashing design allows the cleaning fluid to penetrate the filter plate at multiple angles, thoroughly flushing out sticky impurities such as colloids and asphalt that clog the micropores. During the cleaning process, the removed impurities gather towards the edge of the tank under the centrifugal force of the rotating cleaning brush. When the electromagnetic control valves on multiple sets of inclined discharge pipes are opened, the impurities flow into the inclined discharge pipes with the cleaning fluid. This pipe adopts an inclined angle design, combined with a Teflon coating on the surface, to ensure that the impurities quickly slide down to the vertical discharge pipe under the action of gravity, and finally flow into the waste tank. In summary, when treating lubricating oil containing sticky impurities such as colloids and asphalt, this device, through the deep integration of a three-dimensional filtration architecture and a reciprocating backwashing mechanism, can effectively remove impurities adhering to the micropores of the filter screen, improve the filtration accuracy of the filter screen, and thus solve the problem of impurity accumulation on the filter plate surface affecting the flow efficiency, meeting the fine filtration requirements of high-end lubricating oil products.

[0008] Preferably, the upper end of the inclined discharge pipe is connected to the interior of the annular filter plate, the lower end of the inclined discharge pipe is connected to the side wall of the vertical discharge pipe, and the backwash pipe is located below the frustum-shaped filter plate.

[0009] Preferably, the rotating assembly includes a rotating motor and a rotating shaft. The rotating motor is fixedly installed at the bottom of the filter tank, and the rotating shaft is installed at the output end of the rotating motor. Multiple sets of cleaning brushes are fixedly installed on the side wall of the rotating shaft, and the inner wall of the cleaning brushes is in contact with the upper surface of the frustum-shaped filter plate and the annular filter plate, respectively.

[0010] Preferably, the flushing assembly includes an adjusting shaft, a connecting hose, a storage tank, a backwash pump, a water supply pipe, and a flushing valve. One end of the backwash pipe is rotatably connected to the inner wall of the filter tank, and the other end of the backwash pipe is fixedly equipped with an adjusting shaft. One end of the adjusting shaft is rotatably connected to the inner wall of the filter tank. A connecting hose is provided through one end of the backwash pipe. A storage tank is fixedly installed on the side wall of the filter tank. A backwash pump is fixedly installed at the bottom of the storage tank. A water supply pipe is provided at the bottom of the backwash pump. One end of the connecting hose is connected through the side wall of the water supply pipe, and a flushing valve is provided on the side wall of the connecting hose.

[0011] Preferably, the drive assembly includes a fixed plate, a guide rod, an adjusting toothed plate, and a hydraulic cylinder. Two sets of fixed plates are fixedly installed on the side wall of the filter tank, and a guide rod is fixedly installed between the two sets of fixed plates. A hydraulic cylinder is fixedly installed on the inner wall of the upper fixed plate, and multiple sets of adjusting toothed plates are installed on the side wall of the guide rod. The adjusting toothed plates are slidably connected to the guide rod.

[0012] Preferably, the drive assembly also includes a connecting cylinder and adjusting gears. A connecting cylinder is fixedly disposed between the two sets of guide tooth plates. The connecting cylinder is slidably disposed on the side wall of the guide rod. The telescopic end of the hydraulic cylinder is fixedly connected to the side wall of the upper set of adjusting tooth plates. Adjusting gears are disposed on both sides of the adjusting tooth plates. The two sets of adjusting gears mesh with the two sides of the adjusting tooth plates respectively. The adjusting gears are fixedly disposed on the outer end of the adjusting shaft.

[0013] Preferably, a stirring rack is fixedly installed on the side wall of the rotating shaft, and a scraper is fixedly installed on the lower side wall of the rotating shaft, with the inner wall of the scraper abutting against the inner bottom wall of the filter tank.

[0014] The beneficial effects of this utility model are:

[0015] When the lubricating oil production unit is in use, during the multi-stage filtration of lubricating oil containing viscous impurities, the lubricating oil is first added to the inside of the filter tank through the feed pipe. The lubricating oil then passes through three sets of vertically arranged filter structures, each consisting of a frustum-shaped filter plate and a ring-shaped filter plate. The filter holes in the top filter structure are arranged from largest to smallest. During this process, the lubricating oil passes through the top filter plate, effectively intercepting large particles; the middle filter plate removes medium-sized particles; and the bottom filter plate achieves deep filtration. The lubricating oil, after multi-stage filtration, is finally discharged through the discharge pipe. When impurities accumulate on the surface of the filter plates to the point of affecting flow efficiency, the impurities intercepted on the surface of the frustum-shaped filter plate slide down the conical inclined surface under gravity onto the upper surface of the ring-shaped filter plate, forming a ring-shaped impurity band. At this point, multiple sets of cleaning brushes are driven to rotate synchronously. Each set of cleaning brushes consists of nylon bristles and a stainless steel frame, effectively removing the attached impurities. The device removes tiny particles from the filter pore surface while simultaneously driving the backwash pipe to rotate reciprocally, forming a fan-shaped backwash coverage area. This oscillating backwash design allows the cleaning fluid to penetrate the filter plate at multiple angles, thoroughly flushing out sticky impurities such as colloids and asphalt that clog the micropores. During the cleaning process, the removed impurities gather towards the edge of the tank under the centrifugal force of the rotating cleaning brush. When the electromagnetic control valves on the multiple sets of inclined discharge pipes are opened, the impurities flow into the inclined discharge pipes with the cleaning fluid. This pipe adopts an inclined angle design, combined with a Teflon coating on the surface, to ensure that the impurities quickly slide down to the vertical discharge pipe under gravity and finally flow into the waste tank. In summary, when treating lubricating oil containing sticky impurities such as colloids and asphalt, this device, through the deep integration of a three-dimensional filtration architecture and a reciprocating backwash mechanism, can effectively remove impurities adhering to the micropores of the filter screen, improve the filtration accuracy of the filter screen, and thus solve the problem of impurity accumulation on the filter plate surface affecting the flow efficiency, meeting the fine filtration requirements of high-end lubricating oil products. Attached Figure Description

[0016] Figure 1 The diagram shown is a first three-dimensional structural schematic of a multi-stage filtration lubricating oil production device according to this utility model.

[0017] Figure 2 The diagram shown is a first partial cross-sectional three-dimensional structural schematic of a multi-stage filtration lubricating oil production device according to this utility model.

[0018] Figure 3 The diagram shown is a half-section three-dimensional structural diagram of the filter tank of a multi-stage filtration lubricating oil production device according to this utility model.

[0019] Figure 4 The diagram shown is a three-dimensional structural representation of the outer periphery of the rotating shaft of a multi-stage filtration lubricating oil production device according to this utility model.

[0020] Figure 5The diagram shown is a three-dimensional structural diagram of the outer periphery of the frustum-shaped filter plate of a multi-stage filtration lubricating oil production device according to this utility model.

[0021] Figure 6 The diagram shows a three-dimensional view of the backwash pipe of a multi-stage filtration lubricating oil production device according to this utility model.

[0022] Explanation of reference numerals in the attached drawings: 1. Filter tank; 2. Circular filter plate; 3. Frustum-shaped filter plate; 4. Inclined discharge pipe; 5. Vertical discharge pipe; 6. Waste tank; 7. Electromagnetic control valve; 8. Backwash pipe; 9. Cleaning brush; 10. Feed pipe; 11. Discharge pipe; 12. Rotary motor; 13. Rotating shaft; 14. Adjusting shaft; 15. Connecting hose; 16. Storage tank; 17. Backwash pump; 18. Water supply pipe; 19. Flushing valve; 20. Fixing plate; 21. Guide rod; 22. Hydraulic cylinder; 23. Adjusting toothed plate; 24. Connecting cylinder; 25. Adjusting gear; 26. Stirring frame; 27. Scraper rod. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] Please see Figure 1 and Figure 5 This utility model provides an embodiment: a multi-stage filtration lubricating oil production device, including a filter tank 1, annular filter plates 2, frustum-shaped filter plates 3, inclined discharge pipes 4, vertical discharge pipes 5, a waste tank 6, electromagnetic control valves 7, backwash pipes 8, cleaning brushes 9, feed pipes 10, discharge pipes 11, a rotating assembly, a flushing assembly, and a driving assembly. Multiple sets of annular filter plates 2 are fixedly arranged inside the filter tank 1, and a frustum-shaped filter plate 3 is fixedly arranged in the middle of the annular filter plates 2. Multiple sets of inclined... The filter tank 1 has a discharge pipe 4 and a vertical discharge pipe 5 on one side. A waste tank 6 is installed at the lower end of the vertical discharge pipe 5. An electromagnetic control valve 7 is installed inside the upper end of the inclined discharge pipe 4. Multiple sets of backwash pipes 8 and multiple sets of cleaning brushes 9 are installed inside the filter tank 1. A feed pipe 10 is installed through the top of the filter tank 1 and a discharge pipe 11 is installed through the bottom of the filter tank 1. A rotating component is installed at the bottom of the filter tank 1. A flushing component is installed on one side of the filter tank 1 and a drive component is installed on the other side of the filter tank 1.

[0025] Please see Figure 2 and Figure 6The upper end of the inclined discharge pipe 4 is connected to the interior of the annular filter plate 2, and the lower end of the inclined discharge pipe 4 is connected to the side wall of the vertical discharge pipe 5. The backwash pipe 8 is located below the frustum-shaped filter plate 3. When the electromagnetic control valves 7 on the multiple sets of inclined discharge pipes 4 are opened, impurities flow into the inclined discharge pipes 4 with the cleaning liquid. The pipe adopts an inclined angle design and, with the Teflon coating on the surface, ensures that the impurities slide quickly to the vertical discharge pipe 5 under the action of gravity and finally flow into the waste tank 6. The rotating component includes a rotating motor 12 and a rotating shaft 13. The rotating motor 12 is fixedly installed at the bottom of the filter tank 1, and the rotating shaft 13 is installed at the output end of the rotating motor 12. Multiple sets of cleaning brushes 9 are fixedly installed on the side wall of the rotating shaft 13. The inner wall of the cleaning brushes 9 is in contact with the upper surface of the frustum-shaped filter plate 3 and the annular filter plate 2. When the rotating motor 12 is started, the output end of the rotating motor 12 can drive the multiple sets of cleaning brushes 9 through the rotating shaft 13. The system rotates synchronously. The flushing assembly includes an adjusting shaft 14, a connecting hose 15, a storage tank 16, a backwash pump 17, a water supply pipe 18, and a flushing valve 19. One end of the backwash pipe 8 is rotatably connected to the inner wall of the filter tank 1, and the other end of the backwash pipe 8 is fixedly equipped with the adjusting shaft 14. One end of the adjusting shaft 14 is rotatably connected to the inner wall of the filter tank 1. One end of the backwash pipe 8 is connected to the connecting hose 15. The storage tank 16 is fixedly installed on the side wall of the filter tank 1. The backwash pump 17 is fixedly installed at the bottom of the storage tank 16. The water supply pipe 18 is installed at the bottom of the backwash pump 17. One end of the connecting hose 15 is connected to the side wall of the water supply pipe 18. The side wall of the connecting hose 15 is equipped with a flushing valve 19. When multiple sets of flushing valves 19 on the side walls of the connecting hose 15 and the backwash pump 17 are activated, the cleaning liquid in the storage tank 16 is pressurized by the backwash pump 17, and the flushing liquid is then transported to the interior of multiple sets of backwash pipes 8 through the water supply pipe 18.

[0026] Please see Figure 3 and Figure 4The drive assembly includes a fixed plate 20, a guide rod 21, an adjusting toothed plate 23, and a hydraulic cylinder 22. Two sets of fixed plates 20 are fixedly installed on the side wall of the filter tank 1, and a guide rod 21 is fixedly installed between the two sets of fixed plates 20. A hydraulic cylinder 22 is fixedly installed on the inner wall of the upper fixed plate 20. Multiple sets of adjusting toothed plates 23 are provided on the side wall of the guide rod 21. The adjusting toothed plates 23 are slidably connected to the guide rod 21. Activating the hydraulic cylinder 22 can drive the multiple sets of adjusting toothed plates 23 to reciprocate up and down along the guide rod 21. The drive assembly also includes a connecting cylinder 24 and adjusting gears 25. A connecting cylinder 24 is fixedly installed between the two sets of guide toothed plates and is slidably installed on the side wall of the guide rod 21. The telescopic end of the hydraulic cylinder 22 is fixedly connected to the side wall of the upper set of adjusting toothed plates 23. Adjusting gears 25 are provided on both sides of the adjusting toothed plate 23, and the two sets of adjusting gears 25 are respectively connected to the two sides of the adjusting toothed plate 23. The meshing adjustment gear 25 is fixedly installed at the outer end of the adjustment shaft 14. The adjustment gear plate 23 can drive the adjustment gears 25 on both sides and the adjustment shaft 14 to achieve reciprocating rotation. The adjustment shaft 14 can drive the backwash pipe 8 to achieve reciprocating rotation, forming a fan-shaped backwash coverage area. This swing-type backwash design allows the cleaning liquid to penetrate the filter plate at multiple angles, thoroughly flushing out sticky impurities such as colloids and asphalt that are blocked in the micropores. The side wall of the rotating shaft 13 is fixedly equipped with a stirring frame 26, and the lower side wall of the rotating shaft 13 is fixedly equipped with a scraper 27. The inner wall of the scraper 27 is in contact with the inner bottom wall of the filter tank 1. When the rotating motor 12 is started, the stirring frame 26 and the scraper 27 can be driven to rotate through the stirring shaft. The rotation of the stirring frame 26 can prevent high-viscosity lubricating oil from settling at the bottom of the tank, and the rotation of the scraper 27 can scrape off the oil film adhering to the inner bottom wall of the tank, ensuring that the oil flows fully.

[0027] When the lubricating oil production unit is in use, during the multi-stage filtration of lubricating oil containing viscous impurities, the lubricating oil is first added to the interior of the filter tank 1 through the feed pipe 10. The lubricating oil then passes through three sets of vertically arranged filter structures, each consisting of a frustum-shaped filter plate 3 and an annular filter plate 2. The filter holes in the top and bottom filter structures are arranged from largest to smallest. During this process, the lubricating oil passes through the top filter plate, effectively intercepting large particles; through the middle filter plate, removing medium-sized particles; and through the bottom filter plate, achieving deep filtration. Finally, the lubricating oil, after multi-stage filtration, is discharged through the discharge pipe 11.

[0028] Furthermore, starting the rotating motor 12 will drive the stirring frame 26 and the scraper rod 27 to rotate via the stirring shaft. The rotation of the stirring frame 26 can prevent high-viscosity lubricating oil from settling at the bottom of the tank, and the rotation of the scraper rod 27 can scrape off the oil film adhering to the inner bottom wall of the tank, ensuring that the oil flows fully.

[0029] When impurities accumulate on the surface of the filter plate to the point of affecting flow efficiency, the impurities intercepted on the surface of the frustum-shaped filter plate 3 slide down the conical inclined surface under the action of gravity to the upper surface of the annular filter plate 2, forming an annular impurity band. At this time, the rotating motor 12 is started, and the output end of the rotating motor 12 can drive multiple sets of cleaning brushes 9 to rotate synchronously through the rotating shaft 13. Each set of cleaning brushes 9 is composed of nylon bristles and a stainless steel frame, which can effectively remove tiny particles attached to the surface of the filter pores.

[0030] Simultaneously, the flushing valves 19 on the side walls of multiple connecting hoses 15 and the backwash pump 17 are activated. After the cleaning fluid in the storage tank 16 is pressurized by the backwash pump 17, the flushing fluid is then transported through the water supply pipe 18 to the interiors of multiple backwash pipes 8. At the same time, the hydraulic cylinder 22 is activated, which drives multiple adjusting gear plates 23 to reciprocate up and down along the guide rod 21. Since the two adjusting gears 25 mesh with the two sides of the adjusting gear plate 23 respectively, the adjusting gear plate 23 can drive the two adjusting gears 25 and the adjusting shaft 14 to achieve reciprocating rotation. The adjusting shaft 14 can then drive the backwash pipes 8 to achieve reciprocating rotation, forming a fan-shaped flushing coverage area. This swing-type backwashing design allows the cleaning fluid to penetrate the filter plate at multiple angles, thoroughly flushing out sticky impurities such as colloids and asphalt that are blocked in the micropores.

[0031] During the cleaning process, the removed impurities gather towards the edge of the tank under the centrifugal force of the rotating cleaning brush 9. When the electromagnetic control valves 7 on the multiple sets of inclined discharge pipes 4 are opened, the impurities flow into the inclined discharge pipes 4 with the cleaning fluid. This pipe adopts an inclined angle design, combined with a Teflon coating on the surface, to ensure that the impurities quickly slide down to the vertical discharge pipe 5 under the action of gravity, and finally flow into the waste tank 6.

[0032] In summary, when processing lubricating oil containing viscous impurities such as gum and asphalt, this device, through the deep integration of a three-dimensional filtration architecture and a reciprocating backwashing mechanism, can effectively remove impurities adhering to the micropores of the filter screen, improve the filtration accuracy of the filter screen, and thus solve the problem of impurity accumulation on the filter plate surface affecting the flow efficiency, meeting the fine filtration requirements of high-end lubricating oil products.

[0033] Through the above steps, when the lubricating oil production device is in use, during multi-stage filtration of lubricating oil containing viscous impurities, the lubricating oil is first added to the interior of the filter tank 1 through the feed pipe 10. The lubricating oil then passes through three sets of vertically arranged filter structures, each consisting of a frustum-shaped filter plate 3 and an annular filter plate 2. Simultaneously, the filter holes in the top and bottom filter structures are arranged from large to small. During this process, the lubricating oil effectively intercepts large particles of impurities through the top filter plate, removes medium-sized impurities through the middle filter plate, and achieves deep filtration through the bottom filter plate. The lubricating oil, after multi-stage filtration, is finally discharged through the discharge pipe 11. When impurities accumulate on the surface of the filter plates to the point of affecting flow efficiency, the impurities intercepted on the surface of the frustum-shaped filter plate 3 slide down the conical inclined surface under gravity to the upper surface of the annular filter plate 2, forming an annular impurity band. At this time, multiple sets of cleaning brushes 9 are driven to rotate synchronously. Each set of cleaning brushes 9 consists of nylon bristles and a stainless steel frame. The device effectively removes tiny particles adhering to the surface of the filter pores. Simultaneously, it drives the backwash pipe 8 to rotate reciprocally, forming a fan-shaped rinsing coverage area. This oscillating backwash design allows the cleaning fluid to penetrate the filter plate at multiple angles, thoroughly flushing out sticky impurities such as colloids and asphalt that clog the micropores. During the cleaning process, the removed impurities gather towards the edge of the tank under the centrifugal force of the rotating cleaning brush 9. When the electromagnetic control valves 7 on the multiple sets of inclined discharge pipes 4 are opened, the impurities flow into the inclined discharge pipes 4 with the cleaning fluid. This pipe adopts an inclined angle design, combined with a Teflon coating on the surface, to ensure that the impurities quickly slide down to the vertical discharge pipe 5 under the action of gravity, and finally flow into the waste tank 6. In summary, when treating lubricating oil containing sticky impurities such as colloids and asphalt, this device, through the deep integration of a three-dimensional filtration architecture and a reciprocating backwash mechanism, can effectively remove impurities adhering to the micropores of the filter screen, improve the filtration accuracy of the filter screen, and thus solve the problem of impurity accumulation on the surface of the filter plate affecting the flow efficiency, meeting the fine filtration requirements of high-end lubricating oil products.

[0034] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A multi-stage filtration lubricating oil production apparatus, comprising a filter tank (1), characterized in that: It also includes annular filter plates (2), frustum-shaped filter plates (3), inclined discharge pipes (4), vertical discharge pipes (5), waste tank (6), electromagnetic control valves (7), backwash pipes (8), cleaning brushes (9), feed pipes (10), discharge pipes (11), rotating components, flushing components, and driving components. Multiple sets of annular filter plates (2) are fixedly installed inside the filter tank (1). A frustum-shaped filter plate (3) is fixedly installed in the middle of the annular filter plates (2). Multiple sets of inclined discharge pipes (4) are installed on the side wall of the filter tank (1). A vertical discharge pipe is installed on one side of the filter tank (1). A straight discharge pipe (5) is provided at the lower end of the vertical discharge pipe (5), a waste tank (6) is provided at the upper end of the inclined discharge pipe (4), an electromagnetic control valve (7) is provided inside the filter tank (1), multiple sets of backwash pipes (8) are provided inside the filter tank (1), multiple sets of cleaning brushes (9) are provided inside the filter tank (1), a feed pipe (10) is provided through the top of the filter tank (1), a discharge pipe (11) is provided through the bottom of the filter tank (1), a rotating component is provided at the bottom of the filter tank (1), a flushing component is provided on one side of the filter tank (1), and a drive component is provided on the other side of the filter tank (1).

2. The multi-stage filtration lubricating oil production apparatus according to claim 1, characterized in that: The upper end of the inclined discharge pipe (4) is connected to the interior of the annular filter plate (2), the lower end of the inclined discharge pipe (4) is connected to the side wall of the vertical discharge pipe (5), and the backwash pipe (8) is located below the frustum-shaped filter plate (3).

3. The multi-stage filtration lubricating oil production apparatus according to claim 1, characterized in that: The rotating assembly includes a rotating motor (12) and a rotating shaft (13). The rotating motor (12) is fixedly installed at the bottom of the filter tank (1). The rotating shaft (13) is installed at the output end of the rotating motor (12). Multiple sets of cleaning brushes (9) are fixedly installed on the side wall of the rotating shaft (13). The inner wall of the cleaning brushes (9) is in contact with the upper surface of the frustum-shaped filter plate (3) and the annular filter plate (2).

4. The multi-stage filtration lubricating oil production apparatus according to claim 1, characterized in that: The flushing assembly includes an adjusting shaft (14), a connecting hose (15), a storage tank (16), a backwash pump (17), a water supply pipe (18), and a flushing valve (19). One end of the backwash pipe (8) is rotatably connected to the inner wall of the filter tank (1), and the other end of the backwash pipe (8) is fixedly provided with an adjusting shaft (14). One end of the adjusting shaft (14) is rotatably connected to the inner wall of the filter tank (1). One end of the backwash pipe (8) is provided with a connecting hose (15). The side wall of the filter tank (1) is fixedly provided with a storage tank (16). The bottom of the storage tank (16) is fixedly provided with a backwash pump (17). The bottom of the backwash pump (17) is provided with a water supply pipe (18). One end of the connecting hose (15) is connected to the side wall of the water supply pipe (18). The side wall of the connecting hose (15) is provided with a flushing valve (19).

5. The multi-stage filtration lubricating oil production apparatus according to claim 4, characterized in that: The drive assembly includes a fixed plate (20), a guide rod (21), an adjusting toothed plate (23), and a hydraulic cylinder (22). Two sets of fixed plates (20) are fixedly installed on the side wall of the filter tank (1), and a guide rod (21) is fixedly installed between the two sets of fixed plates (20). A hydraulic cylinder (22) is fixedly installed on the inner wall of the upper fixed plate (20). Multiple sets of adjusting toothed plates (23) are installed on the side wall of the guide rod (21), and the adjusting toothed plates (23) are slidably connected to the guide rod (21).

6. The multi-stage filtration lubricating oil production apparatus according to claim 5, characterized in that: The drive assembly also includes a connecting cylinder (24) and an adjusting gear (25). The connecting cylinder (24) is fixedly disposed between the two sets of guide tooth plates. The connecting cylinder (24) is slidably disposed on the side wall of the guide rod (21). The telescopic end of the hydraulic cylinder (22) is fixedly connected to the side wall of the upper set of adjusting tooth plates (23). Adjusting gears (25) are disposed on both sides of the adjusting tooth plate (23). The two sets of adjusting gears (25) mesh with the two sides of the adjusting tooth plate (23) respectively. The adjusting gears (25) are fixedly disposed on the outer end of the adjusting shaft (14).

7. The multi-stage filtration lubricating oil production apparatus according to claim 3, characterized in that: A stirring rack (26) is fixedly installed on the side wall of the rotating shaft (13), and a scraper rod (27) is fixedly installed on the lower side wall of the rotating shaft (13). The inner wall of the scraper rod (27) is in contact with the inner bottom wall of the filter tank (1).

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