High pressure water filter anti-impurity device

Abstract

The application relates to the technical field of high-pressure fluid filtration, in particular to a high-pressure water filtration impurity prevention device. The device comprises a pipe body and a filter screen, the middle part of the pipe body is provided with a conveying channel facilitating liquid flow, the middle part of the conveying channel is obliquely provided with the filter screen, the upper surface of the filter screen is slidably provided with a flow guide ring, the inner wall of the flow guide ring is provided with flow guide strips, and the middle part of the filter screen is provided with a flow guide mechanism. The flow guide mechanism comprises a flow guide plate which is hinged to one side of a supporting rod and is arranged in parallel with the conveying channel. The side of the flow guide plate close to the filter screen is provided with a sharp end which is in close contact with the side wall of the filter screen. The device is provided with a slidable and rotatable filter screen. The fluid impact generated by the start and stop of high-pressure water drives the filter screen to move downward and rotate, dynamically changes the fluid flushing position and the impurity accumulation area, avoids the damage of the filter screen caused by long-term impact in a local part, balances the load of the filter screen, and prolongs the service life of the filter screen.

Description

Technical Field

[0001] This invention relates to the field of high-pressure fluid filtration technology. Specifically, it relates to a high-pressure water filtration device for preventing impurities. Background Technology

[0002] High-pressure water delivery pipelines are generally equipped with filters to intercept and filter fluid impurities. However, the filter screens in existing filter devices are in fixed positions. When the fluid continuously washes the same area of ​​the filter screen for a long time, it is easy to cause localized damage to the filter screen. At the same time, impurities continue to accumulate in the fixed position of the filter screen, which can easily cause blockage.

[0003] Conventional filters rely solely on unidirectional fluid flushing to remove impurities, lacking an active cleaning structure. Some filters with self-cleaning functions have complex structures, resulting in poor filter cleaning and a significant decrease in filtration efficiency. Summary of the Invention

[0004] Therefore, the technical problem to be solved by the present invention is to provide a high-pressure water filtration device for preventing impurities. The device is equipped with a sliding and rotating filter screen. The fluid impact generated by the start and stop of high-pressure water drives the filter screen to move down and rotate, dynamically changing the fluid flushing position and the impurity accumulation area, avoiding long-term impact damage to the filter screen in some areas, and balancing the filter screen load.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0006] The system includes a pipe body and a filter screen. The pipe body has a delivery channel in its middle section to facilitate liquid flow. A filter screen is obliquely installed in the middle of the delivery channel. A guide ring is slidably provided on the upper surface of the filter screen, and guide strips are provided on the inner wall of the guide ring. A flow guiding mechanism is installed in the middle of the filter screen. The flow guiding mechanism includes:

[0007] The guide plate is hinged to one side of the support rod and is arranged parallel to the conveying channel. The guide plate has a sharp end that fits against the side wall of the filter screen on the side near the filter screen.

[0008] The support rod has a circular through hole at the bottom of the filter screen to accommodate the rotation of the support rod, and a positioning groove is provided on the top of the support rod. An extension block is attached to the surface of the positioning groove and is integrally set at the hinge center of the guide plate.

[0009] The technical solution of the present invention achieves the following beneficial technical effects:

[0010] This device features a sliding and rotating filter screen. The fluid impact generated by the start and stop of high-pressure water drives the filter screen to move downwards and rotate, dynamically changing the fluid scouring position and the area where impurities accumulate. This prevents long-term, localized impact damage to the filter screen, balances the filter screen load, and extends its service life. It also includes a guide plate with a sharp tip. Under normal conditions, the guide plate directs the fluid entering the filter screen. Through the mechanical linkage caused by the start and stop of the pipeline, the guide plate can be driven to flip, allowing the sharp tip to adhere to the inner wall of the filter screen and scrape away attached impurities. This achieves targeted cleaning of the filter screen's inner wall and effectively alleviates filter screen clogging. Attached Figure Description

[0011] Figure 1 Schematic diagram of the cross-sectional structure of the tube body of the present invention;

[0012] Figure 2 Schematic diagram of the structure after the auxiliary ring of the present invention is installed;

[0013] Figure 3 This invention Figure 1 Schematic diagram of a local structure in the middle;

[0014] Figure 4 Schematic diagram of the bottom structure of the filter screen of this invention;

[0015] Figure 5 A schematic diagram of the flow guide ring structure of this invention.

[0016] The reference numerals in the diagram represent: 1. Pipe body; 2. Filter screen; 3. Conveying channel; 4. Corresponding toothed block; 5. Guide ring; 6. Guide strip; 7. Guide plate; 8. Support rod; 9. Sharp end; 10. Positioning groove; 11. Extension block; 12. Inspection cover; 13. Rotating shaft; 14. Insert; 15. Main spring; 16. Surface bearing; 17. Hook block; 18. Through rod; 19. U-shaped block; 20. Positioning cover; 21. Bottom opening; 22. Auxiliary ring; 23. Auxiliary strip; 24. Auxiliary block; 25. Driving toothed block. Detailed Implementation

[0017] This implementation example is attached to the instruction manual. Figure 1-5 As shown, the tube body 1 is a hollow tube body, and a conveying pipe 3 is formed inside the tube body 1. A channel for placing the filter screen 2 is opened at an angle of 45° on the tube body 1. This channel is connected to the conveying pipe 3. After the filter screen 2 is assembled, the liquid flows through the filter screen 2 to achieve filtration, and impurities that cannot pass through the filter screen 2 are intercepted and collected.

[0018] As attached Figure 1As shown, the top of the filter screen 2 is slidably inserted into the inner wall of the conveying channel 3. The filter screen 2 has a downward moving stroke, and the bottom of the filter screen 2 is supported by the main spring 15. Since the filter screen 2 needs to rotate during operation, a plane bearing 16 is provided at the upper end of the main spring 15 to reduce the frictional resistance during the sliding process of the filter screen 2. When the tube body 1 stops conveying the medium and then introduces high-pressure liquid again, the high-pressure liquid impacts the filter screen 2 in a downward direction. Under the action of fluid thrust, the filter screen 2 moves downward as a whole and compresses the main spring 15.

[0019] A guide ring 5 is slidably mounted above the filter screen 2. An arc-shaped spiral guide strip 6 is arranged on the inner circumference of the guide ring 5. When high-pressure liquid is reintroduced, the fluid impacts the guide strip 6, driving the guide ring 5 to rotate. Multiple driving tooth blocks 25 arranged in a circumferential array are located on the outer side below the guide strip 6. Corresponding matching tooth blocks 4 are provided on the upper part of the filter screen 2. The driving tooth blocks 25 can mesh with the corresponding tooth blocks 4. It should be noted that... Figure 5 Only the corresponding toothed block 4 is shown. To avoid view obstruction, the filter screen 2 is not drawn synchronously. The guide ring 5 rotates clockwise under the impact of the fluid, which drives the toothed block 25 to mesh with the corresponding toothed block 4 and drives the filter screen 2 to rotate synchronously.

[0020] In this process, the axial sliding gap between the toothed block 25 and the corresponding toothed block 4 is less than the total downward sliding stroke of the filter screen 2, and also less than the contact engagement length between the filter screen 2 and the top of the guide ring 5. After the filter screen 2 slides down a certain distance, the toothed block 25 and the corresponding toothed block 4 disengage from each other, and the guide ring 5 no longer drives the filter screen 2 to rotate. Therefore, the motion trajectory of the filter screen 2 is as follows: synchronous rotation in the initial downward movement, and continued downward movement after disengagement until the end of the stroke stops sliding.

[0021] The downward sliding of filter screen 2 can change the vertical position of the liquid outflow on the right side of filter screen 2. This area is subjected to fluid scouring for a long time and is also the position where impurities are most likely to accumulate and filter screen 2 is most likely to be damaged. This device uses the fluid impact brought by the start and stop of the conveying channel 3 to drive filter screen 2 to move downward and rotate synchronously, dynamically adjusting the scouring area and impurity accumulation area of ​​filter screen 2 to avoid local continuous sludge accumulation and local long-term impact damage.

[0022] At the same time, the rotating guide ring 5 changes the direction of fluid flow with the help of the spiral guide strip 6, so that the liquid forms a spiral flow that impacts the surface of the filter screen 2 and attaches impurities, promoting the removal of impurities from the surface of the filter screen 2.

[0023] A circular through hole is provided at the bottom of the filter screen 2, and a rotatable support rod 8 is installed at the through hole. A guide plate 7 is hinged to one side of the upper part of the support rod 8 (see Appendix). Figure 3When the fluid impacts the guide plate 7, it can unload the fluid and guide the liquid to flow to the right, thus achieving the guiding function. The hinge center of the guide plate 7 extends to the left to form an extension block 11. The upper end of the extension block 11 abuts against the positioning groove 10, restricting the guide plate 7 from rotating clockwise and ensuring the stability of the guiding direction.

[0024] To prevent the filter screen 2 from failing to rotate due to insufficient driving force of the guide ring 5, an auxiliary ring 22 is integrally formed at the lower end of the filter screen 2. An auxiliary strip 23 is integrally set on the inner circumference of the auxiliary ring 22. The shape of the auxiliary strip 23 is consistent with that of the guide strip 6. During the downward sliding of the filter screen 2, the lower end of the auxiliary strip 23 contacts the top surface of the auxiliary block 24. The auxiliary block 24 is laterally slidably assembled on the inspection cover 12. With the limiting and abutting effect of the auxiliary block 24 on the auxiliary strip 23, the filter screen 2 is driven to rotate. There are multiple auxiliary strips 23. In the bottom view, the ends of two adjacent auxiliary strips 23 overlap each other. When the filter screen 2 is reset upward under the pushing force of the main spring 15, the auxiliary block 24 contacts the lower end of the next auxiliary strip 23 in turn. Relying on the downward inclined guide slope of the auxiliary block 24, the auxiliary block 24 is pushed to slide laterally and finally automatically reset. As the conveying channel 3 is repeatedly started and stopped, the filter screen 2 can achieve a rotation action every time it slides downward.

[0025] A rotating shaft 13 is mounted on the top of the inspection cover 12. The upper end of the rotating shaft 13 is provided with a vertical rectangular protrusion with an opening in the middle. The rectangular protrusion is adapted to be inserted into the socket 14. When the rotating shaft 13 rotates, it can drive the support rod 8 to rotate synchronously. When the rotating shaft 13 is locked, the support rod 8 can only slide vertically with the filter screen 2 and cannot rotate on its own, so as not to interfere with the up and down movement of the filter screen 2. The rotating shaft 13 is mounted on the filter screen 2 through a bearing, which restricts the axial movement of the rotating shaft 13 relative to the filter screen 2.

[0026] A rectangular bottom opening 21 with a horizontal arrangement is opened at the lower end of the rotating shaft 13. The positioning cover 20 is provided with a rectangular positioning boss that protrudes upward. The boss is adapted to be inserted into the bottom opening 21. After the positioning cover 20 is locked and fixed on both sides by bolts, the rotating shaft 13 is limited and locked. The guide plate 7 always maintains the orientation of guiding the flow to the right. After the positioning cover 20 is removed, the rotating shaft 13 and the support rod 8 can rotate freely. At this time, the motor output shaft can be connected through the release hole in the middle of the rotating shaft 13. The motor drives the rotating shaft 13 to rotate at high speed. The rotation generates centrifugal force. The guide plate 7 acts as a stirring component, stirring the impurities inside the filter screen 2 and preventing the impurities from sticking and clogging the filter screen 2.

[0027] With the guide bar 6 biased to one side, during high-speed centrifugal rotation, the sharp end 9 gradually comes into contact with the inner wall of the filter screen 2, scraping and cleaning the surface of the inner wall of the filter screen 2.

[0028] The opening in the middle of the rectangular protrusion at the upper end of the rotating shaft 13 allows the hook block 17 to rotate. The lower end of the hook block 17 is the rotation center, and a torsion spring is configured at the rotation center. The upper end of the hook block 17 holds the lower end of the through rod 18. When the filter screen 2 moves downward, it drives the support rod 8 and the through rod 18 to move downward synchronously. The downward stroke of the through rod 18 relative to the hook block 17 has a limit. After the through rod 18 reaches the downward limit position, it remains stationary. The support rod 8 continues to slide downward, causing the through rod 18 to move upward relative to the support rod 8. The top of the through rod 18 is hinged to a U-shaped block 19. A torsion spring is also provided at the hinge position. The U-shaped block 19 is U-shaped and consists of four cylindrical rods on the top, bottom, left, and right. A space-adapting extension strip 11 enters in the middle. The lower cylinder of the U-shaped block 19 is hinged to the upper end of the through rod 18, and the upper cylinder extends outward.

[0029] When the through rod 18 moves upward, the cylindrical part of the loop block 19 contacts the side of the extension block 11 (e.g., Figure 3 After the loop block 19 is pushed to rotate counterclockwise, it springs back, causing the cylinder on the loop block 19 to lock into the upper part of the extension block 11. When the filter screen 2 is reset to the top position under the action of the main spring 15, the hook block 17 pulls the side of the extension block 11 to rotate counterclockwise, causing the sharp end 9 to scrape the inner wall of the filter screen 2 and clean the area where sludge easily accumulates. After the extension block 11 rotates counterclockwise at a certain angle, it separates from the loop block 19 and returns to its tilted posture under its own gravity.

[0030] It should be noted that the actual sliding distance between hook block 17 and through rod 18 is very small, as indicated in the instruction manual. Figure 4 The image has been enlarged for easy display. Releasing the hook block 17 is also very convenient. A release hole is provided in the middle of the rotating shaft 13. The screwdriver passes through the release hole and presses against the release ramp, causing the hook block 17 to rotate clockwise, thus releasing the rod 18.

[0031] A conveying channel 3 for facilitating liquid flow is provided in the middle of the pipe body 1. A filter screen 2 is obliquely installed in the middle of the conveying channel 3. A guide ring 5 is slidably provided on the upper surface of the filter screen 2. A guide strip 6 is provided on the inner wall of the guide ring 5. A guide mechanism is installed in the middle of the filter screen 2. The guide mechanism includes: a guide plate 7, which is hinged to one side of the support rod 8. The guide plate 7 is arranged parallel to the conveying channel 3. A sharp end 9 that fits against the side wall of the filter screen 2 is provided on the side of the guide plate 7 near the filter screen 2; and a support rod 8. A circular opening is provided at the inner bottom of the filter screen 2 to accommodate the rotation of the support rod 8. A through hole is formed, and a positioning groove 10 is provided above the support rod 8. An extension block 11 is attached to the surface of the positioning groove 10. The extension block 11 is integrally set at the hinge center of the guide plate 7. A maintenance cover 12 is installed in the middle of the tube body 1 with an oblique thread. A rotating shaft 13 is rotatably set in the middle of the maintenance cover 12. A socket 14 is provided below the support rod 8 to accommodate the insertion of the rotating shaft 13. An elastic support mechanism is provided between the maintenance cover 12 and the filter screen 2. The elastic support mechanism includes a main spring 15 and a plane bearing 16. The main spring 15 is installed above the maintenance cover 12. A hook block 17 is rotatably mounted above the rotating shaft 13. An opening is provided above the rotating shaft 13 for the hook block 17 to rotate. A through rod 18 is engaged above the hook block 17. A hole for sliding the through rod 18 is provided in the middle of the support rod 8. A loop block 19 is hinged above the through rod 18. One side of the extension block 11 blocks the path of the loop block 19. Torsion springs are installed at the hinge positions of the hook block 17 and the loop block 19. A positioning cover 20 is installed below the inspection cover 12, and an adaptation positioning cover is provided below the rotating shaft 13. The bottom opening 21 of the 20-clamp joint is provided. An auxiliary ring 22 is installed below the filter screen 2. An auxiliary strip 23 is installed on the inner arc of the auxiliary ring 22. An auxiliary block 24 is slidably arranged above the inspection cover 12. A reset spring is installed on one side of the auxiliary block 24. The guide ring 5 is rotatably arranged inside the conveying channel 3. A driving tooth block 25 is arranged below the guide ring 5. A corresponding tooth block 4 is adapted to slide on the surface of the driving tooth block 25. The corresponding tooth block 4 is integrally arranged above the filter screen 2. A release hole is opened above the rotating shaft 13. A release slope is arranged below the hook block 17.

[0032] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of the claims of this patent application.

Claims

1. A high-pressure water filtration device for preventing impurities, comprising a pipe body (1) and a filter screen (2), characterized in that, The pipe body (1) has a conveying channel (3) in the middle to facilitate liquid flow. A filter screen (2) is obliquely installed in the middle of the conveying channel (3). A guide ring (5) is slidably provided on the upper surface of the filter screen (2). A guide strip (6) is provided on the inner wall of the guide ring (5). A guide mechanism is installed in the middle of the filter screen (2). The guide mechanism includes: The guide plate (7) is hinged to one side of the support rod (8). The guide plate (7) is arranged parallel to the conveying channel (3). The guide plate (7) has a sharp end (9) that fits against the side wall of the filter screen (2) on the side near the filter screen (2). The inner bottom of the support rod (8) and the filter screen (2) is provided with a circular through hole adapted to the rotation of the support rod (8). A positioning groove (10) is provided on the upper part of the support rod (8). An extension block (11) is attached to the surface of the positioning groove (10). The extension block (11) is integrally set at the hinge center of the guide plate (7).

2. The high-pressure water filtration and impurity removal device according to claim 1, characterized in that, The pipe body (1) is fitted with a maintenance cover (12) by a slanted thread in the middle. A rotating shaft (13) is rotatably provided in the middle of the maintenance cover (12). A socket (14) adapted to be inserted above the rotating shaft (13) is provided below the support rod (8).

3. The high-pressure water filtration and impurity removal device according to claim 2, characterized in that, An elastic support mechanism is provided between the inspection cover (12) and the filter screen (2). The elastic support mechanism includes a main spring (15) and a plane bearing (16). The main spring (15) is installed above the inspection cover (12).

4. The high-pressure water filtration and impurity removal device according to claim 2, characterized in that, A hook block (17) is rotatably mounted above the rotating shaft (13). An opening is provided above the rotating shaft (13) for the hook block (17) to rotate. A through rod (18) is snapped onto the top of the hook block (17). A hole is provided in the middle of the support rod (8) to accommodate the sliding of the through rod (18). A loop block (19) is hinged above the through rod (18). One side of the extension block (11) blocks the path of the loop block (19).

5. A high-pressure water filtration and impurity removal device according to claim 4, characterized in that, Torsion springs are installed at the hinge positions of the hook block (17) and the hinge positions of the loop block (19).

6. A high-pressure water filtration device for preventing impurities according to claim 2, characterized in that, A positioning cover (20) is installed below the inspection cover (12), and a bottom opening (21) for the positioning cover (20) to be snapped into is provided below the rotating shaft (13).

7. A high-pressure water filtration device for preventing impurities according to claim 2, characterized in that, An auxiliary ring (22) is installed below the filter screen (2), and an auxiliary strip (23) is installed on the inner arc of the auxiliary ring (22). An auxiliary block (24) is slidably installed above the inspection cover (12), and a reset spring is installed on one side of the auxiliary block (24).

8. A high-pressure water filtration device for preventing impurities according to claim 1, characterized in that, The guide ring (5) is rotatably set inside the conveying channel (3). A driving tooth block (25) is set below the guide ring (5). A corresponding tooth block (4) is adapted to slide on the surface of the driving tooth block (25). The corresponding tooth block (4) is integrally set above the filter screen (2).

9. A high-pressure water filtration device for preventing impurities according to claim 2, characterized in that, A release hole is provided above the rotating shaft (13).

10. A high-pressure water filtration device for preventing impurities according to claim 4, characterized in that, A release ramp is provided below the hook block (17).

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