Backflow filter

Abstract

The utility model discloses a reflux filter, which relates to the field of reflux filters and comprises a reflux filter body, a sealing cover is fixedly mounted at the upper end of the reflux filter body, a limiting plate is fixedly mounted between the sealing cover and the upper end of the reflux filter body, and a filter screen is integrally formed at one end, far away from the sealing cover, of the limiting plate. A driving motor is fixedly installed in the sealing cover, a transmission rod is fixedly installed on an output shaft of the driving motor, a plurality of fixing rings are fixedly installed on the outer ring of the transmission rod, connecting plates are integrally formed on the two sides of the outer rings of the fixing rings, and brush plates are fixedly installed on the connecting plates on the two sides; and a plurality of brushes are arranged at the ends, away from the connecting plate, of the brush plates, and a liquid outlet pipe is integrally formed at the bottom of the backflow filter body. By adopting the structure, the filter screen is kept smooth, the stable proceeding of the filtering process is ensured, and the filtered clean liquid continuously flows downwards to reach the liquid outlet pipe.

Description

Technical Field

[0001] This utility model belongs to the field of reflux filters, and specifically relates to a reflux filter. Background Technology

[0002] In numerous fields such as industrial manufacturing, environmental protection, and pharmaceuticals, the recycling of liquids has a profound impact on production efficiency and product quality. With continuous industrial upgrading, higher demands are placed on the filtration process in liquid recycling, requiring not only the assurance of liquid purity but also a stable and efficient filtration process. Against this backdrop, the recirculation filter has emerged. Integrating advanced technology, it can precisely control the filtration effect, helping various industries achieve a qualitative leap in liquid treatment.

[0003] Existing technologies have specifically developed some reflux filters. For example, Chinese patent publication number "CN215137382U" discloses "a reflux filter with convenient filter element replacement". It uses a guide vane installed on the motor output end of the mounting bracket inside the liquid outlet. After being powered on through the power interface, the motor drives the guide vane to rotate, guiding the liquid entering through the liquid inlet pipe through the filter element installed between the filter element mounting slot at the bottom of the inner wall of the reflux filter body and the filter element mounting groove at the bottom of the sealing top cover. The liquid flows from the outside to the inside for filtration. The structure is simple and convenient for efficient reflux filtration.

[0004] Although the liquid introduced through the inlet pipe is guided by a motor-driven rotating impeller to flow through the filter element installed between the filter element mounting slot at the bottom of the inner wall of the return filter body and the filter element mounting groove at the bottom of the sealing top cover, the structure is simple and facilitates efficient flow filtration. However, the frequent replacement of filter screens and filter elements increases the workload for operators. The filter screen cannot be automatically cleaned effectively, which leads to frequent replacement and cleaning by operators, increasing the inconvenience. Utility Model Content

[0005] In view of the problems mentioned in the background art, the purpose of this utility model is to provide a reflux filter to solve the problems of reflux filters.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0007] A reflux filter includes a reflux filter body, a sealing cover fixedly installed on the upper end of the reflux filter body, a limiting plate fixedly installed between the sealing cover and the upper end of the reflux filter body, a filter screen integrally formed on the end of the limiting plate away from the sealing cover, a drive motor fixedly installed inside the sealing cover, a transmission rod fixedly installed on the output shaft of the drive motor, multiple fixing rings fixedly installed on the outer ring of the transmission rod, connecting plates integrally formed on both sides of the outer ring of the multiple fixing rings, brush plates fixedly installed on both sides of the connecting plates, multiple brushes provided on the end of the multiple brush plates away from the connecting plates, an outlet pipe integrally formed at the bottom of the reflux filter body, a fixing frame fixedly installed on the inner ring of the outlet pipe, a spiral rod rotatably installed inside the fixing frame, and an inlet pipe integrally formed on one side of the outer ring of the upper end of the reflux filter body.

[0008] As a preferred technical solution, a motor slot is provided inside the sealing cover, and the drive motor is fixedly installed inside the sealing cover through the motor slot. A limiting groove is provided inside the sealing cover at one end near the backflow filter body and at one end of the backflow filter body near the bottom of the sealing cover.

[0009] As a preferred technical solution, the end of the sealing cover away from the return filter body is integrally formed with a handle, and the limiting plate is fixedly installed between the sealing cover and the return filter body through a limiting groove.

[0010] As a preferred technical solution, the output shaft of the drive motor passes through the sealing cover and is fixedly connected to the transmission rod. The multiple brushes are all attached to the inner ring of the filter screen. A sealing groove is opened at the bottom of the body of the return filter. The end of the filter screen away from the limiting plate is slidably installed inside the sealing groove.

[0011] As a preferred technical solution, a cross block is fixedly installed at the end of the transmission rod away from the output shaft of the drive motor. A rotating groove is opened inside the fixing frame, and a rotating rod is rotatably installed inside the rotating groove. The spiral rod is fixedly installed at the bottom of the rotating rod and is located in the inner ring of the liquid outlet pipe.

[0012] As a preferred technical solution, a cross-shaped groove block is fixedly installed at the end of the rotating rod away from the helical rod, and the cross-shaped groove block is inserted into the interior of the cross-shaped groove block.

[0013] As a preferred technical solution, the outer ring of the sealing cover is integrally formed with a first internal thread block on both sides, and the upper end of the return filter body is integrally formed with a second internal thread block on both sides. The first internal thread block and the second internal thread block are both threadedly connected with bolts.

[0014] In summary, the present invention has the following main advantages:

[0015] First, through continuous brushing, impurities can be removed from the filter screen in time, keeping the filter screen unobstructed and ensuring the stable operation of the filtration process. The clean liquid after filtration continues to flow downwards to the outlet pipe.

[0016] Secondly, as the transmission rod rotates, the cross block at its bottom engages with the cross groove block at the top of the rotating rod, causing the rotating rod to rotate within the rotating groove of the fixed frame. The helical rod at the bottom of the rotating rod rotates accordingly, guiding and propelling the liquid, allowing it to flow more smoothly from the outlet pipe and preventing liquid accumulation within it. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the internal cross-sectional structure of the reflux filter body of this utility model;

[0019] Figure 3 This is a schematic diagram of the filter structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the spiral rod structure of this utility model.

[0021] Reference numerals: 1. Handle; 2. Bolt; 3. Sealing cap; 4. First internal threaded block; 5. Second internal threaded block; 6. Inlet pipe; 7. Return filter body; 8. Outlet pipe; 9. Motor slot; 10. Drive motor; 11. Brush plate; 12. Fixing ring; 13. Connecting plate; 15. Cross block; 16. Filter screen; 17. Cross groove block; 18. Fixing frame; 19. Spiral rod; 20. Transmission rod; 21. Brush; 22. Limiting groove; 23. Sealing groove; 24. Limiting plate; 25. Rotating rod; 26. Rotating groove. Detailed Implementation

[0022] Example

[0023] refer to Figures 1-4A reflux filter according to this embodiment includes a reflux filter body 7. A sealing cover 3 is fixedly installed on the upper end of the reflux filter body 7. A limiting plate 24 is fixedly installed between the sealing cover 3 and the upper end of the reflux filter body 7. A filter screen 16 is integrally formed on the end of the limiting plate 24 away from the sealing cover 3. A drive motor 10 is fixedly installed inside the sealing cover 3. A transmission rod 20 is fixedly installed on the output shaft of the drive motor 10. Multiple fixing rings 12 are fixedly installed on the outer ring of the transmission rod 20. Connecting plates 13 are integrally formed on both sides of the outer ring of the multiple fixing rings 12. Brush plates 11 are fixedly installed on both sides of the connecting plates 13. Multiple brushes 21 are provided on the end of the multiple brush plates 11 away from the connecting plates 13. An outlet pipe 8 is integrally formed at the bottom of the reflux filter body 7. A fixing frame 18 is fixedly installed on the inner ring of the outlet pipe 8. A spiral rod 19 is rotatably installed inside the fixing frame 18. An inlet pipe 6 is integrally formed on one side of the outer ring of the upper end of the reflux filter body 7.

[0024] refer to Figure 3 The sealing cover 3 has a motor groove 9 inside, and the drive motor 10 is fixedly installed inside the sealing cover 3 through the motor groove 9. The sealing cover 3 has a limiting groove 22 at one end near the return filter body 7 and at one end near the bottom of the sealing cover 3. The sealing cover 3 has a handle 1 integrally formed at the end away from the return filter body 7. The limiting plate 24 is fixedly installed between the sealing cover 3 and the return filter body 7 through the limiting groove 22. Through the limiting groove 22 opened at the upper end of the return filter body 7 and the bottom of the sealing cover 3, the limiting plate 24 can be fixed inside the limiting groove 22, which improves the fixing effect of the filter screen 16.

[0025] refer to Figures 2 to 3 The output shaft of the drive motor 10 passes through the sealing cover 3 and is fixedly connected to the transmission rod 20. Multiple brushes 21 are attached to the inner ring of the filter screen 16. A sealing groove 23 is provided at the bottom of the return filter body 7. The end of the filter screen 16 away from the limiting plate 24 is slidably installed inside the sealing groove 23. Through the continuous brushing of the brushes 21, impurities can be removed from the filter screen 16 in time, keeping the filter screen 16 unobstructed and ensuring the stable operation of the filtration process. The filtered clean liquid continues to flow downwards and reaches the outlet pipe 8.

[0026] refer to Figures 3 to 4A cross block 15 is fixedly installed at the end of the transmission rod 20 away from the output shaft of the drive motor 10. A rotating groove 26 is opened inside the fixing frame 18. A rotating rod 25 is rotatably installed inside the rotating groove 26. A spiral rod 19 is fixedly installed at the bottom of the rotating rod 25. The spiral rod 19 is located in the inner ring of the liquid outlet pipe 8. A cross groove block 17 is fixedly installed at the end of the rotating rod 25 away from the spiral rod 19. The cross block 15 is inserted into the cross groove block 17. When the transmission rod 20 rotates, the cross block 15 at its bottom cooperates with the cross groove block 17 at the top of the rotating rod 25, driving the rotating rod 25 to rotate in the rotating groove 26 of the fixing frame 18. The spiral rod 19 at the bottom of the rotating rod 25 rotates accordingly. The rotation of the spiral rod 19 guides and pushes the liquid, which enables the liquid to be discharged more smoothly from the liquid outlet pipe 8 and avoids the liquid from accumulating in the liquid outlet pipe 8.

[0027] refer to Figure 1 The sealing cover 3 has a first internal thread block 4 integrally formed on both sides of the outer ring, and the return filter body 7 has a second internal thread block 5 integrally formed on both sides of the upper end. The first internal thread block 4 and the second internal thread block 5 are both threaded with bolts 2, which can effectively fix the sealing cover 3 to the upper end of the return filter body 7.

[0028] Operating principle and advantages: Before use, the liquid to be filtered enters the backflow filter body 7 through the inlet pipe 6. Under pressure, the liquid flows from the inlet pipe 6 into the chamber of the body and begins to flow towards the filter screen 16. At this time, the drive motor 10 starts, driving the output shaft to rotate, which in turn drives the connected transmission rod 20 to start rotating. When the liquid reaches the filter screen 16, the filtration operation begins. Because the filter screen 16 has a specific pore structure, its pore size is smaller than the size of the impurity particles in the liquid to be filtered. Therefore, the impurities are intercepted on one side of the filter screen 16, while the clean liquid can continue to flow downward through the pores of the filter screen 16. In this process, the rotation of the transmission rod 20 drives the fixed ring 12, the connecting plate 13, and the brush plate 11 to rotate together. The brush 21 at the end of the brush plate 11 is attached to the inner ring of the filter screen 16. The rotation of the brush 21 plays an important role, as it can... The filter screen 16 is continuously brushed to prevent impurities from accumulating on it. If too many impurities accumulate, the pores of the filter screen 16 will be blocked, thereby reducing the filtration efficiency and potentially affecting the filtration effect. Through the continuous brushing of the brush 21, impurities can be removed from the filter screen 16 in time, keeping the filter screen 16 unobstructed and ensuring the stable operation of the filtration process. The filtered clean liquid continues to flow downwards to the outlet pipe 8. While the transmission rod 20 rotates, the cross block 15 at its bottom cooperates with the cross groove block 17 at the top of the rotating rod 25, driving the rotating rod 25 to rotate in the rotating groove 26 of the fixed frame 18. The spiral rod 19 at the bottom of the rotating rod 25 rotates accordingly. The rotation of the spiral rod 19 guides and propels the liquid, allowing it to drain more smoothly from the outlet pipe 8, preventing the liquid from accumulating in the outlet pipe 8 and improving the efficiency of liquid discharge.

Claims

1. A return filter comprising a return filter body (7), characterized in that: The upper end of the reflux filter body (7) is fixedly installed with a sealing cover (3), the sealing cover (3) and the upper end of the reflux filter body (7) are fixedly installed with a limiting plate (24), one end of the limiting plate (24) away from the sealing cover (3) is integrally formed with a filter screen (16), the sealing cover (3) is fixedly installed with a driving motor (10), the output shaft of the driving motor (10) is fixedly installed with a transmission rod (20), the outer circle of the transmission rod (20) is fixedly installed with a plurality of fixed rings (12), the outer circle of the plurality of fixed rings (12) is integrally formed with a connecting plate (13) on both sides, the connecting plate (13) is fixedly installed with a brush plate (11) on both sides, one end of the brush plate (11) away from the connecting plate (13) is provided with a plurality of brushes (21), the bottom of the reflux filter body (7) is integrally formed with a liquid outlet pipe (8), the inner circle of the liquid outlet pipe (8) is fixedly installed with a fixed frame (18), the inside of the fixed frame (18) is rotatably installed with a spiral rod (19), one side of the outer circle of the upper end of the reflux filter body (7) is integrally formed with a liquid inlet pipe (6).

2. A return filter according to claim 1, wherein: The inside of the sealing cover (3) is provided with a motor groove (9), the driving motor (10) is fixedly installed in the inside of the sealing cover (3) through the motor groove (9), the end of the sealing cover (3) close to the reflux filter body (7) and the end of the reflux filter body (7) close to the bottom of the sealing cover (3) are both provided with a limiting groove (22).

3. A return filter according to claim 2, wherein: One end of the sealing cover (3) away from the reflux filter body (7) is integrally formed with a handle (1), the limiting plate (24) is fixedly installed between the sealing cover (3) and the reflux filter body (7) through the limiting groove (22).

4. A return filter according to claim 1, wherein: The output shaft of the driving motor (10) penetrates through the sealing cover (3) and is fixedly connected with the transmission rod (20), the brushes (21) are all attached to the inner circle of the filter screen (16), the inside bottom of the reflux filter body (7) is provided with a sealing groove (23), one end of the filter screen (16) away from the limiting plate (24) is slidably installed in the inside of the sealing groove (23).

5. A return filter according to claim 1, wherein: One end of the transmission rod (20) away from the output shaft of the driving motor (10) is fixedly installed with a cross block (15), the inside of the fixed frame (18) is provided with a rotating groove (26), the inside of the rotating groove (26) is rotatably installed with a rotating rod (25), the spiral rod (19) is fixedly installed at the bottom of the rotating rod (25), and the spiral rod (19) is arranged in the inner circle of the liquid outlet pipe (8).

6. A return filter according to claim 5, wherein: One end of the rotating rod (25) away from the spiral rod (19) is fixedly installed with a cross groove block (17), and the cross block (15) is inserted into the inside of the cross groove block (17).

7. A return filter according to claim 1, wherein: The outer circle of the sealing cover (3) is integrally formed with a first internal thread block (4) on both sides, the upper end of the reflux filter body (7) is integrally formed with a second internal thread block (5) on both sides, and the inside of the first internal thread block (4) and the second internal thread block (5) is threadedly connected with a bolt (2).

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