Filter screen backwashing function oil filter

Abstract

The utility model belongs to the filter oil device technical field, concretely relates to a filter screen backwash function's filter oil device, including upper cylinder and lower cylinder, the upper end of upper cylinder is assembled with electric telescopic handle, the output end of electric telescopic handle extends to inside, the outside of electric telescopic handle and be located the inside fixed piston of upper cylinder, the upper end of lower cylinder inside is provided with filter plate, the inside rotation of filter plate is connected with rotating cylinder, the inside sliding connection of rotating cylinder has moving link, the inner wall of rotating cylinder is set up with sliding slot, the lower end sliding connection of moving link inside has pressure plate, one end of pressure plate is fixed with sliding rod. This can in backwash, electric telescopic handle drives piston to change pressure, make the hydraulic oil of filter plate above in upper cylinder reverse flush filter plate, and sliding rod drives rotating cylinder rotation along helical sliding groove simultaneously, drive scraper to remove filter plate lower end impurity, avoid the blockage, guarantee the stable filtration efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of oil filter technology, specifically relating to an oil filter with a filter screen backwashing function. Background Technology

[0002] In industrial production and machinery operation, oil filters are key equipment for ensuring oil cleanliness, and their filtration effect directly affects the normal operation and service life of related equipment. After long-term use, traditional oil filters accumulate a large amount of impurities on the filter screen, and these impurities tend to accumulate at the bottom of the screen. If not cleaned in time, this can easily cause the filter screen to become clogged, resulting in a significant decrease in filtration efficiency and even affecting the normal flow of oil. Currently, most common oil filter cleaning methods rely on manual disassembly, which not only consumes a lot of manpower and time, affecting production progress, but also may damage filter components due to improper operation during disassembly. Furthermore, some oil filters with simple backwashing functions often only clean the filter screen through pressure backwashing, which is insufficient to thoroughly remove tightly adhered impurities accumulated on the lower surface of the filter screen. This limited cleaning effect fails to effectively prevent the filter screen from quickly re-clogging, leading to unstable filtration efficiency and posing a threat to the continuous operation of the equipment. Based on the above problems, this application proposes an oil filter with a filter screen backwashing function to improve these issues. Utility Model Content

[0003] The purpose of this invention is to provide an oil filter with a backwashing function. During backwashing, the electric telescopic rod drives the piston to change the pressure, causing the hydraulic oil above the filter plate in the upper cylinder to backwash the filter plate. At the same time, the sliding rod drives the rotating cylinder to rotate along the spiral sliding groove, which drives the scraper to remove impurities from the lower end of the filter plate, thus avoiding clogging and ensuring stable filtration efficiency.

[0004] The specific technical solution adopted in this utility model is as follows: An oil filter with a backwashing function includes an upper cylinder and a lower cylinder. An electric telescopic rod is mounted on the upper end of the upper cylinder, with its output end extending inwards. A piston is fixed to the outside of the electric telescopic rod and inside the upper cylinder. A filter plate is disposed on the upper end of the lower cylinder. A rotating cylinder is rotatably connected inside the filter plate. A moving rod is slidably connected inside the rotating cylinder. A sliding groove is formed on the inner wall of the rotating cylinder. A pressure plate is slidably connected to the lower end of the moving rod. A sliding rod is fixed to one end of the pressure plate, extending outwards from the moving rod and fitting with the sliding groove. Multiple scrapers are fixed to the outside of the rotating cylinder, located at the lower end of the filter plate. A first spring is disposed inside the moving rod, located at the end of the pressure plate away from the sliding rod.

[0005] In a preferred embodiment, a second spring is provided at the lower end of the interior of the rotating cylinder, and a support plate is fixed at the upper end of the second spring.

[0006] In a preferred embodiment, a support ring is fixed inside the lower cylinder, and the rotating cylinder and the support ring are rotatably connected.

[0007] In a preferred embodiment, the lower end of the outer side of the upper cylinder is provided with an external thread, the inner side of the outer side of the lower cylinder is provided with an internal thread, and the external thread and the internal thread are compatible. A sealing ring is fixed to the outer side of the upper cylinder.

[0008] In a preferred embodiment, a drain pipe is fixed to the lower end of the lower cylinder, and a valve is provided on the outside of the drain pipe.

[0009] In a preferred embodiment, an oil outlet pipe is fixed to one end of the upper cylinder, and an oil inlet pipe is fixed to one end of the lower cylinder.

[0010] The technical effects achieved by this utility model are as follows: This utility model utilizes an electric telescopic rod to move a piston during backwashing, changing the pressure and causing the hydraulic oil above the filter plate in the upper cylinder to backwash the filter plate. Simultaneously, a sliding rod slides along a spiral sliding groove, driving the rotating cylinder to rotate and causing a scraper to remove impurities attached to the lower end of the filter plate. This achieves efficient cleaning of the filter plate, effectively preventing clogging and ensuring stable filtration efficiency. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the internal structure of the upper and lower cylinders of this utility model; Figure 3 This is a schematic diagram of the internal structure of the rotating cylinder of this utility model; Figure 4 This is a partial structural schematic diagram of the sliding groove of this utility model; Figure 5 This is a bottom view of the upper cylinder of this utility model; Figure 6 This is a top view of the lower cylinder of this utility model; Figure 7 This is a bottom view of the lower cylinder of this utility model.

[0012] The attached diagram lists the components represented by each number as follows: 10. Upper cylinder; 11. Lower cylinder; 12. Electric telescopic rod; 13. Piston; 14. Filter plate; 15. Rotating cylinder; 16. Moving rod; 17. Sliding groove; 18. Pressure plate; 19. Sliding rod; 20. Scraper; 21. First spring; 22. Second spring; 23. Support plate; 24. Support ring; 25. Sealing ring; 26. Drain pipe; 27. Valve; 28. Oil outlet pipe; 29. ​​Oil inlet pipe. Detailed Implementation

[0013] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0014] Many specific details are set forth in the following description in order to provide a full understanding of this utility model. However, this utility model may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0015] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of this utility model. The phrase "in a preferred embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that mutually excludes other embodiments.

[0016] Secondly, this utility model is described in detail with reference to the schematic diagrams. When detailing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.

[0017] Please see the appendix Figures 1 to 4As shown, this utility model provides an oil filter with a backwashing function, including an upper cylinder 10 and a lower cylinder 11. An electric telescopic rod 12 is mounted on the upper end of the upper cylinder 10, and the output end of the electric telescopic rod 12 extends into the interior. A piston 13 is fixed on the outside of the electric telescopic rod 12 and inside the upper cylinder 10. A filter plate 14 is provided at the upper end inside the lower cylinder 11. A rotating cylinder 15 is rotatably connected inside the filter plate 14. A moving rod 16 is slidably connected inside the rotating cylinder 15. A sliding groove 17 is provided on the inner wall of the rotating cylinder 15. A pressure plate 18 is slidably connected to the lower end inside the moving rod 16. A sliding rod 19 is fixed at one end of the pressure plate 18. The sliding rod 19 extends to the outside of the moving rod 16 and is adapted to the sliding groove 17. Multiple scrapers 20 are fixed on the outside of the rotating cylinder 15. The multiple scrapers 20 are located at the lower end of the filter plate 14. A first spring 21 is provided inside the moving rod 16, and the first spring 21 is located at the end of the pressure plate 18 away from the sliding rod 19.

[0018] In this embodiment, oil enters the lower cylinder 11 through the inlet pipe 29, is filtered by the filter plate 14, enters the upper cylinder 10, and is then discharged through the outlet pipe 28. The filter plate 14 can filter the oil. During backwashing, the outlet pipe 28 and the inlet pipe 29 are closed, and the drain pipe 26 is opened. By activating the electric telescopic rod 12, the electric telescopic rod 12 drives the piston 13 to move. The movement of the piston 13 changes the pressure inside the upper cylinder 10. Since there is oil inside the upper cylinder 10 and the lower cylinder 11, the downward movement of the piston 13 causes the hydraulic oil above the filter plate 14 in the upper cylinder 10 to flow below the filter plate 14, thereby achieving backwashing of the filter plate 14 and washing off the impurities attached to the filter plate 14. In addition, the moving rod 16 is located directly below the electric telescopic rod 12. When the output end of the telescopic rod 12 extends downward, it pushes the moving rod 16 to move downward. The lower end of the moving rod 16 is slidably connected to the sliding rod 19. Under the action of the electric telescopic rod 12, the moving rod 16 causes the sliding rod 19 to slide along the sliding groove 17 of the rotating cylinder 15, driving the rotating cylinder 15 to rotate. Multiple scrapers 20 are fixed on the outside of the rotating cylinder 15. The upper ends of the multiple scrapers 20 are in contact with the lower end of the filter plate 14. The rotation of the rotating cylinder 15 drives the multiple scrapers 20 fixed on its outside to rotate. The rotation of the multiple scrapers 20 can scrape off the impurities attached to the lower end of the filter plate 14. The scraped impurities can be discharged through the drain pipe 26. The scrapers 20 rotate with the rotating cylinder 15, which can clean the impurities on the filter plate 14, effectively avoid clogging, and ensure stable filtration efficiency. It should be noted that the inner wall of the rotating cylinder 15 is provided with a sliding groove 17, which is spirally arranged around the inner wall of the rotating cylinder 15 and matches the size and travel of the sliding rod 19. When the moving rod 16 moves downward under the push of the electric telescopic rod 12, the sliding rod 19 is embedded in the sliding groove 17 and slides along its spiral path. With the guiding effect of the spiral structure, the vertical downward linear motion of the moving rod 16 is smoothly converted into the rotational motion of the rotating cylinder 15, thereby driving the scraper 20 to uniformly scrape the lower end of the filter plate 14. At the same time, the inner wall of the sliding groove 17 is smoothed, which can reduce the frictional resistance when the sliding rod 19 slides, ensure the smooth rotation of the rotating cylinder 15, and improve the stability and efficiency of the backwashing process. Multiple sealing rings are installed between the rotating cylinder 15 and the filter plate 14 to prevent unfiltered oil from leaking into the upper cylinder 10. The electric telescopic rod 12 is electrically connected to an external power source through wires.

[0019] In a preferred embodiment, please refer to Figure 4 A second spring 22 is provided at the lower end of the rotating cylinder 15, and a support plate 23 is fixed at the upper end of the second spring 22.

[0020] In this embodiment, the moving rod 16 is compressed when it moves downward, generating elastic potential energy. When the electric telescopic rod 12 retracts, the moving rod 16 loses its downward force, the second spring 22 resets and pushes the support plate 23, causing the moving rod 16 to reset upward. The sliding rod 19 slides in the opposite direction along the sliding groove 17, causing the rotating cylinder 15 to rotate in the opposite direction, and the scraper 20 cleans the filter plate 14 again.

[0021] Secondly, please refer to again Figures 5 to 7 The lower cylinder 11 has a support ring 24 fixed inside, and the rotating cylinder 15 is rotatably connected to the support ring 24.

[0022] In this embodiment, the rotating cylinder 15 is rotatably connected to the support ring 24 fixed inside the lower cylinder 11. The support ring 24 provides stable support for the rotating cylinder 15 to ensure its stability during rotation. The scraper 20 on its outer side scrapes away the impurities at the lower end of the filter plate 14, and the impurities can be discharged through the drain pipe 26.

[0023] Secondly, please refer to the following as well. Figure 2 and Figure 3 The lower end of the outer side of the upper cylinder 10 is provided with an external thread, and the inner side of the outer side of the lower cylinder 11 is provided with an internal thread, and the external thread and the internal thread are compatible. A sealing ring 25 is fixed on the outer side of the upper cylinder 10.

[0024] In this embodiment, the threaded connection between the upper cylinder 10 and the lower cylinder 11 facilitates disassembly and assembly, making it convenient for the internal filter plate 14 component to be maintained and replaced. The sealing ring 25 enhances the connection sealing performance and prevents oil leakage.

[0025] To further understand and explain, Figure 1 For example, a drain pipe 26 is fixed at the lower end of the lower cylinder 11, and a valve 27 is provided on the outside of the drain pipe 26.

[0026] In this embodiment, the oil enters the lower cylinder 11 through the oil inlet pipe 29 fixed at one end of the lower cylinder 11, is filtered by the filter plate 14, enters the upper cylinder 10, and is discharged through the oil outlet pipe 28 fixed at one end of the upper cylinder 10. At this time, the valve 27 outside the drain pipe 26 is closed to prevent the oil from flowing out of the drain pipe 26 during normal filtration. During backwashing, the oil outlet pipe 28 and the oil inlet pipe 29 are closed to form a closed space inside the upper cylinder 10 and the lower cylinder 11. Then the valve 27 is opened, and impurities are discharged through the drain pipe 26 fixed at the lower end of the lower cylinder 11.

[0027] In a preferred embodiment, please refer to Figure 1 An oil outlet pipe 28 is fixed at one end of the upper cylinder 10, and an oil inlet pipe 29 is fixed at one end of the lower cylinder 11.

[0028] The working principle of this utility is as follows: During normal filtration, the oil enters the lower cylinder 11 from the inlet pipe 29 at one end, passes through the filter plate 14, enters the upper cylinder 10, and is discharged from the outlet pipe 28 at one end of the upper cylinder 10. At this time, the valve 27 on the outside of the drain pipe 26 is closed to prevent oil loss. During backwashing, the outlet pipe 28 and the inlet pipe 29 are closed, forming a closed space between the upper cylinder 10 and the lower cylinder 11. The valve 27 is opened, and the electric telescopic rod 12 is activated. Its output end pushes the moving rod 16 downward. The sliding rod 19 inside the moving rod 16 slides along the spiral sliding groove 17 on the inner wall of the rotating cylinder 15, converting linear motion into rotational motion of the rotating cylinder 15. The rotating cylinder 15 rotates stably under the support of the support ring 24, driving the outer... The scraper 20 scrapes away impurities at the lower end of the filter plate 14. At the same time, the electric telescopic rod 12 drives the piston 13 to move downward, changing the pressure inside the upper cylinder 10. This causes the oil inside the upper cylinder 10 to backwash the filter plate 14. The impurities that are washed off, along with those scraped off by the scraper 20, are discharged through the drain pipe 26. When the electric telescopic rod 12 retracts, the second spring 22 inside the rotating cylinder 15 returns to its original position, pushing the support plate 23 to move the moving rod 16 upward. The sliding rod 19 slides in the opposite direction along the sliding groove 17, causing the rotating cylinder 15 to rotate in the opposite direction. The scraper 20 cleans the filter plate 14 again. The upper cylinder 10 and the lower cylinder 11 are connected by threads for easy disassembly and maintenance. The sealing ring 25 ensures a leak-proof seal. All components work together to achieve efficient filtration and automatic backwashing.

[0029] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the art.

Claims

1. An oil filter with a backwashing function, comprising an upper cylinder (10) and a lower cylinder (11), characterized in that: An electric telescopic rod (12) is mounted on the upper end of the upper cylinder (10). The output end of the electric telescopic rod (12) extends into the interior. A piston (13) is fixed on the outside of the electric telescopic rod (12) and inside the upper cylinder (10). A filter plate (14) is provided at the upper end of the interior of the lower cylinder (11). A rotating cylinder (15) is rotatably connected inside the filter plate (14). A moving rod (16) is slidably connected inside the rotating cylinder (15). A sliding groove (17) is provided on the inner wall of the rotating cylinder (15). The moving rod (16) is slidably connected inside the rotating cylinder (15). 6) A pressure plate (18) is slidably connected to the lower end of the interior. A sliding rod (19) is fixed to one end of the pressure plate (18). The sliding rod (19) extends to the outside of the moving rod (16), and the sliding rod (19) and the sliding groove (17) are adapted to each other. Multiple scrapers (20) are fixed to the outside of the rotating cylinder (15). The multiple scrapers (20) are located at the lower end of the filter plate (14). A first spring (21) is provided inside the moving rod (16), and the first spring (21) is located at the end of the pressure plate (18) away from the sliding rod (19).

2. An oil filter with a backwashing function according to claim 1, characterized in that: The lower end of the rotating cylinder (15) is provided with a second spring (22), and the upper end of the second spring (22) is fixed with a support plate (23).

3. An oil filter with a backwashing function according to claim 1, characterized in that: The lower cylinder (11) has a support ring (24) fixed inside, and the rotating cylinder (15) and the support ring (24) are rotatably connected.

4. An oil filter with a backwashing function according to claim 1, characterized in that: The lower end of the outer side of the upper cylinder (10) is provided with an external thread, and the inner side of the outer side of the lower cylinder (11) is provided with an internal thread, and the external thread and the internal thread are compatible. A sealing ring (25) is fixed on the outer side of the upper cylinder (10).

5. An oil filter with a backwashing function according to claim 1, characterized in that: The lower end of the lower cylinder (11) is fixed with a drain pipe (26), and a valve (27) is provided on the outside of the drain pipe (26).

6. An oil filter with a backwashing function according to claim 1, characterized in that: An oil outlet pipe (28) is fixed at one end of the upper cylinder (10), and an oil inlet pipe (29) is fixed at one end of the lower cylinder (11).

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