A groundwater treatment grid filtration device and its filtration method

Abstract

This invention discloses a bar screen filter device and its filtration method for groundwater treatment, relating to the field of groundwater filtration technology. To address the problem that existing bar screen filters suffer from reduced filtration efficiency due to impurities and particulate matter easily clogging the pores on the screen surface after use, traditional solutions primarily involve manual disassembly and cleaning. This method is time-consuming, labor-intensive, and costly, and the manual disassembly process can disrupt the groundwater filtration process, making it inconvenient for users. The invention includes a bar screen filter box, with a bar screen cleaning box mounted on top. The bar screen filter box contains a water flow chamber, and multiple through holes are provided between the bar screen cleaning box and the bar screen filter box. Multiple bar screen filters are installed inside the water flow chamber. The invention also includes a linear screw module installed at the top inside the bar screen cleaning box, comprising a ball screw and a screw motor.

Description

Technical Field

[0001] This invention relates to the field of groundwater filtration technology, specifically to a bar screen filtration device and filtration method for groundwater treatment. Background Technology

[0002] Groundwater refers to water that exists in the pores of rocks below the ground surface. In a narrow sense, it refers to water in saturated aquifers below the groundwater level. When treating groundwater, it is necessary to remove impurities and particulate matter from the groundwater. This process is mainly carried out through bar screen filtration devices. The bar screens remove impurities from the groundwater, reducing the amount of impurities and particulate matter inside the groundwater and improving the safety of subsequent groundwater use.

[0003] After use, the pores on the surface of existing bar screen filters are easily blocked by impurities and particulate matter, resulting in a decrease in the filtration effect of the bar screen filter. The traditional solution is to manually disassemble and replace and clean it. This method is time-consuming, labor-intensive, and has high labor costs. Moreover, the manual disassembly process will affect the groundwater filtration process, which is not conducive to the use of users. Therefore, we provide a bar screen filter device and its filtration method for groundwater treatment. Summary of the Invention

[0004] The purpose of this invention is to provide a bar screen filter device and its filtration method for groundwater treatment, in order to solve the problem mentioned in the background art that after the existing bar screen filter device is used, the pores on the surface of the bar screen are easily blocked by impurities and particulate matter, resulting in a decrease in the filtration effect of the bar screen filter device. The traditional solution is mainly to manually disassemble and replace and clean it. This method is time-consuming and labor-intensive, with high labor costs. Moreover, the manual disassembly process will affect the groundwater filtration process, which is not conducive to the use of the device.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a bar screen filter device for groundwater treatment, comprising a bar screen filter box, a bar screen cleaning box installed above the bar screen filter box, a water flow chamber provided inside the bar screen filter box, a plurality of through holes provided between the bar screen cleaning box and the bar screen filter box, and a plurality of bar screen filters installed inside the water flow chamber;

[0006] Also includes:

[0007] A linear screw module is installed at the top inside the bar screen cleaning box. The linear screw module includes a ball screw and a screw motor. A screw slider is installed on the outer wall of the ball screw. An electric cylinder is installed on the outer wall of the lower surface of the screw slider. The electric cylinder includes a piston rod. A first electromagnet is installed at the lower end of the piston rod, and the first electromagnet is magnetically connected to the bar screen filter.

[0008] A first motor is installed on the outer wall of the front end of the bar screen filter box. The output end of the first motor is provided with a first drive shaft. A rotating platform is installed at one end of the first drive shaft. Multiple electric telescopic rods are installed on the outer wall of the rotating platform. The telescopic ends of the electric telescopic rods are equipped with second electromagnets, and the second electromagnets are magnetically connected to the bar screen filter.

[0009] Preferably, a grid screen is installed on the outer wall of the grid filter, a locking block is installed on the lower surface of the grid filter, a combined mounting base is installed below the grid filter, a slot is provided on the outer wall of the combined mounting base, and the grid filter engages with the slot through the locking block.

[0010] Preferably, a mounting frame is installed on one side inside the bar screen cleaning box, and a toothed plate is installed at one end of the mounting frame. Multiple toothed rods are provided on the outer wall of the toothed plate, and the toothed rods are distributed in the same way as the holes of the bar screen.

[0011] Preferably, a second motor is installed on one side of the first motor, a second drive shaft is provided at the output end of the second motor, a take-up roller is installed at one end of the second drive shaft, and the second motor is connected to the take-up roller through the second drive shaft.

[0012] Preferably, an unwinding box is installed at the bottom of the water flow cavity, an unwinding roller is installed inside the unwinding box, a grid winding net is provided between the unwinding roller and the winding roller, a guide roller is installed above the unwinding box, and a baffle is provided between the unwinding box and the guide roller.

[0013] Preferably, a top cover plate is hinged to the outer wall of the upper surface of the bar screen cleaning box.

[0014] Preferably, the front and rear ends of the bar filter box are equipped with end covers, and the outer walls of the end covers are provided with inlets and outlets, which are connected to the water flow cavity.

[0015] Preferably, a bracket is installed below the bar filter box.

[0016] Preferably, a material receiving and pulling groove is provided below the toothed plate.

[0017] Preferably, a filtration method for a groundwater treatment grid filter includes the following steps:

[0018] Step 1: Groundwater enters the water flow chamber of the bar screen filter box from the inlet and outlet. Large particles of impurities in the groundwater first reach the first bar screen filter. The bar screen filter blocks the large particles of impurities, thus filtering the water. The filtered water passes through the through holes in the bar screen filter and reaches the second bar screen filter behind it. The second bar screen filter has smaller holes than the first bar screen filter, which allows it to block and filter the medium particles of impurities remaining in the groundwater.

[0019] Step 2: The groundwater, after being filtered by multiple grid screens, moves to the grid winding screen. The aperture of the grid winding screen is smaller than that of the grid screens, which allows it to block and filter smaller particles of impurities. This prevents the fine particles of impurities in the groundwater from being blocked and confined at the grid winding screen, while the water flows backward through the holes of the grid winding screen and is discharged from the inlet and outlet at the other end to the external equipment for subsequent groundwater treatment operations.

[0020] Step 3: The linear module of the lead screw drives the lead screw slider to move above the bar screen filter that needs to be cleaned. The electric cylinder follows the movement of the lead screw slider. When the bar screen needs to be cleaned, the electric cylinder drives the piston rod and the first electromagnet to extend downwards. The first electromagnet magnetically fixes the filter to the upper surface of the bar screen filter. Then, the electric cylinder drives the piston rod to retract upwards, allowing the bar screen filter to pass through the through hole and enter the bar screen cleaning box. This is used to move the used bar screen filter and prepare it for cleaning.

[0021] Step 4: The first motor drives the first transmission shaft to rotate at the rotating table. By rotating, the position of the electric telescopic rod is adjusted so that the electric telescopic rod faces the bar filter. The electric telescopic rod extends towards the bar filter, causing the second electromagnet to be magnetically fixed to the frame of the bar filter. The first electromagnet is de-energized and demagnetized, the lead screw and slider move to avoid the position, and the rotating table rotates again, so that the bar filter rotates towards the toothed plate. The electric telescopic rod extends forward, so that the bar screen of the bar filter contacts the toothed rod at the toothed plate. The toothed rod inserts into the holes of the bar screen, pushing out the impurities that are blocking the holes. The pushed-out impurities fall into the receiving and pulling trough below for collection.

[0022] Step 5: After the front-end filtration, the bar screen rewinding section removes even finer impurities and particles from the groundwater. The second motor drives the second drive shaft and the take-up roller to rotate, which in turn moves the bar screen rewinding section at the unwind roller. This moves the new bar screen rewinding section into the water flow chamber for blocking and filtration, while the previously used bar screen rewinding section is moved along the guide roller and rolled up onto the take-up roller for placement. The new bar screen rewinding section can be replaced periodically by moving it around during the rewinding process until the bar screen rewinding section is completely rolled up.

[0023] Step Six: After the grid is wound up, the grid winding mesh is located on the winding roller in the grid cleaning box. The wound grid winding mesh can be removed from the winding roller for cleaning and replacement by opening the top cover. After cleaning and replacement, the two ends of the grid winding mesh are loaded onto the unwinding roller and the winding roller respectively for use.

[0024] Compared with the prior art, the beneficial effects of the present invention are:

[0025] 1. In this invention, the lead screw linear module drives the lead screw slider to move above the grid filter to be cleaned. The electric cylinder moves with the lead screw slider. When the grid needs to be cleaned, the electric cylinder drives the piston rod and the first electromagnet to extend downwards and use the first electromagnet to magnetically fix it to the upper surface of the grid filter.

[0026] Subsequently, the electric cylinder drives the piston rod to retract upwards, allowing the bar filter to pass through the through-hole into the bar cleaning box. The first motor drives the first transmission shaft and the rotating table to rotate, adjusting the position of the electric telescopic rod so that it faces the bar filter. The electric telescopic rod extends towards the bar filter, causing the second electromagnet to magnetically fix it to the frame of the bar filter. The first electromagnet is de-energized, the lead screw and slider move to a safe position, and the rotating table rotates again, causing the bar filter to rotate towards the toothed plate. The electric telescopic rod extends forward, causing the bar screen of the bar filter to contact the toothed rods on the toothed plate. The toothed rods insert into the holes of the bar screen, pushing out the impurities clogging the holes. The pushed-out impurities fall into the receiving and pulling trough below for collection. Through the above structure, the equipment can automatically clean the bar filter, extending the time for manual bar replacement and cleaning, improving the bar filtration effect, and making it convenient for users.

[0027] 2. After front-end filtration, the bar screen winding section removes even finer particles from the groundwater. The second motor drives the second drive shaft and winding roller to rotate, which in turn moves the bar screen winding section at the unwinding roller. This moves the new bar screen winding section into the water flow chamber for blocking and filtration, while the previously used bar screen winding section is moved and wound onto the winding roller along the guide roller. The bar screen winding section can be replaced periodically by winding and moving it until it is completely wound up, at which point the entire bar screen is disassembled, cleaned, and replaced. Through the above structure, different methods can be used to treat the bar screen winding section, thereby extending the manual replacement and cleaning cycle. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0029] Figure 2 This is a schematic diagram of the internal structure of the bar filter box and bar cleaning box of the present invention;

[0030] Figure 3 This is a schematic diagram of the grid filter structure of the present invention;

[0031] Figure 4 This is a partial schematic diagram of the grid winding mesh of the present invention;

[0032] Figure 5 This is a schematic diagram of the combined mounting base structure of the present invention;

[0033] Figure 6 This is a partial structural diagram of the rotating platform of the present invention;

[0034] In the diagram: 1. Bar screen filter box; 2. Bar screen cleaning box; 3. End cover plate; 4. Inlet and outlet; 5. Water flow chamber; 6. Bar screen filter; 7. Bar screen mesh; 8. Locking block; 9. Combined mounting base; 10. Slot; 11. Through hole; 12. Lead screw linear module; 13. Ball screw; 14. Lead screw motor; 15. Lead screw slider; 16. Electric cylinder; 17. Piston rod; 18. First electromagnet; 19. First motor; 20. First drive shaft; 21. Rotating table; 22. Electric telescopic rod; 23. Second electromagnet; 24. Mounting frame; 25. Toothed plate; 26. Toothed rod; 27. Take-up roller; 28. Bar screen take-up mesh; 29. ​​Unwinding box; 30. Unwinding roller; 31. Guide roller; 32. Material receiving and pulling groove; 33. Second motor; 34. Second drive shaft; 35. Top cover plate; 36. Bracket; 37. Baffle. Detailed Implementation

[0035] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0036] See also Figure 1-6 An embodiment of the present invention provides a groundwater treatment bar filter device, including a bar filter box 1, a bar cleaning box 2 installed above the bar filter box 1, a water flow chamber 5 provided inside the bar filter box 1, a plurality of through holes 11 provided between the bar cleaning box 2 and the bar filter box 1, and a plurality of bar filters 6 installed inside the water flow chamber 5; specifically, the bar filters 6 are made of magnetically attractable metal and are used to magnetically combine with electromagnets;

[0037] Also includes:

[0038] The linear screw module 12 is installed at the top inside the bar screen cleaning box 2. The linear screw module 12 includes a ball screw 13 and a screw motor 14. A screw slider 15 is installed on the outer wall of the ball screw 13. An electric cylinder 16 is installed on the outer wall of the lower surface of the screw slider 15. The electric cylinder 16 includes a piston rod 17. A first electromagnet 18 is installed at the lower end of the piston rod 17, and the first electromagnet 18 is magnetically connected to the bar screen filter 6.

[0039] The first motor 19 is installed on the outer wall of the front end of the bar filter box 1. The output end of the first motor 19 is provided with a first drive shaft 20. One end of the first drive shaft 20 is equipped with a rotating table 21. Multiple electric telescopic rods 22 are installed on the outer wall of the rotating table 21. The telescopic end of the electric telescopic rod 22 is equipped with a second electromagnet 23, and the second electromagnet 23 is magnetically connected to the bar filter 6.

[0040] The lead screw linear module 12 drives the lead screw slider 15 to move above the grid filter 6 that needs to be cleaned, and the electric cylinder 16 follows the lead screw slider 15 to move.

[0041] When the bar screen needs to be cleaned, the electric cylinder 16 drives the piston rod 17 and the first electromagnet 18 to extend downwards. The first electromagnet 18 is magnetically fixed to the upper surface of the bar screen filter 6. Specifically, an infrared detection element can be installed at the electric cylinder 16, and an infrared receiver can be installed on the upper surface of the bar screen filter 6. The electromagnet can be accurately positioned by infrared identification. Afterwards, the electric cylinder 16 drives the piston rod 17 to retract upwards, so that the bar screen filter 6 passes through the through hole 11 and enters the bar screen cleaning box 2.

[0042] The first motor 19 drives the first transmission shaft 20 to rotate at the rotating table 21. By rotating, the position of the electric telescopic rod 22 is adjusted so that the electric telescopic rod 22 faces the grid filter 6. The electric telescopic rod 22 extends towards the grid filter 6, driving the second electromagnet 23 to be magnetically fixed on the frame of the grid filter 6. The first electromagnet 18 is de-energized and demagnetized, and the lead screw slider 15 moves to avoid the position.

[0043] The rotating table 21 rotates again, causing the bar screen filter 6 to rotate towards the toothed plate 25. The electric telescopic rod 22 extends forward, bringing the bar screen 7 of the bar screen filter 6 into contact with the toothed rod 26 at the toothed plate 25. The toothed rod 26 inserts into the holes of the bar screen 7, pushing out the impurities clogging the holes. The pushed-out impurities fall into the receiving and pulling trough 32 below for collection. After cleaning, the electric telescopic rod 22 drives the bar screen filter 6 to retract backward and rotates it onto the through hole 11 via the rotating table 21. The electric cylinder 16 drives the piston rod 17 to engage with the first electromagnet 18 again, pulling the bar screen filter 6 downward and moving it into the water flow chamber 5. The locking block 8 at the bottom of the downward-moving bar screen filter 6 inserts into the combined mounting base 9 for locking and fixing, so that the bar screen filter 6 is stably and securely placed in the water flow chamber 5 for filtration. Through the above structure, the equipment can automatically clean the bar screen filter, extending the time for manual replacement and cleaning of the bar screen, improving the bar screen filtration effect, and making it convenient for users.

[0044] See also Figure 2 , Figure 3 , Figure 5 A grid screen 7 is installed on the outer wall of the grid filter 6, a locking block 8 is installed on the lower surface of the grid filter 6, a combined mounting base 9 is installed below the grid filter 6, a slot 10 is provided on the outer wall of the combined mounting base 9, and the grid filter 6 is engaged with the slot 10 through the locking block 8.

[0045] The bar screen 7 is used to block and filter impurities and particulate matter in groundwater. When the bar filter 6 is installed and fixed, the bottom locking block 8 will be inserted into the slot 10 of the combination mounting base 9 and combined by locking. During cleaning, the bar filter 6 is pulled upward and the locking block 8 is separated from the slot 10, which makes it convenient for users to switch the state of the bar filter 6.

[0046] See also Figure 2 A mounting bracket 24 is installed on one side inside the bar screen cleaning box 2. A toothed plate 25 is installed at one end of the mounting bracket 24. Multiple toothed rods 26 are provided on the outer wall of the toothed plate 25, and the toothed rods 26 have the same hole distribution as the bar screen 7.

[0047] See also Figure 1 , Figure 2 A second motor 33 is installed on one side of the first motor 19. A second drive shaft 34 is provided at the output end of the second motor 33. A take-up roller 27 is installed at one end of the second drive shaft 34, and the second motor 33 is connected to the take-up roller 27 through the second drive shaft 34.

[0048] The second motor 33 drives the second transmission shaft 34 to rotate at the take-up roller 27. By rotating, it moves the grid take-up net 28, which replaces the grid take-up net 28 and rolls the used grid take-up net 28 back to the take-up roller 27, making it convenient for users to replace and clean it later.

[0049] See also Figure 2 , Figure 4 The bottom of the water flow chamber 5 is equipped with an unwinding box 29, the unwinding box 29 is equipped with an unwinding roller 30, a grid winding net 28 is provided between the unwinding roller 30 and the winding roller 27, a guide roller 31 is installed above the unwinding box 29, and a baffle 37 is provided between the unwinding box 29 and the guide roller 31.

[0050] The unwinding roller 30 is used to pre-position the required grid take-up mesh 28, and connects one end of the grid take-up mesh 28 to the take-up roller 27 to ensure that the grid take-up mesh 28 can move with the take-up rotation. When the grid take-up mesh 28 is located in the water flow chamber 5, it can block and filter impurities and particles in the groundwater through the holes on its surface. The unwinding and take-up process of the grid take-up mesh 28 extends the required cleaning and replacement cycle, improves work efficiency, and makes it convenient for users.

[0051] See also Figure 1 , Figure 2 A top cover plate 35 is installed on the outer wall of the upper surface of the bar grid cleaning box 2 via a hinge;

[0052] The top cover 35 is designed to facilitate user access for replacing and cleaning the take-up roller 27 inside the grid cleaning box 2.

[0053] See also Figure 1 , Figure 2 The front and rear ends of the bar filter box 1 are equipped with end cover plates 3. The outer wall of the end cover plate 3 is provided with inlet and outlet 4, and the inlet and outlet 4 are connected to the water flow chamber 5.

[0054] The end cover plate 3 serves as the end assembly and is connected to the water flow chamber 5 through the inlet and outlet 4, facilitating the entry of water into the water flow chamber 5 for filtration. The inlet and outlet 4 can be installed with the pipeline via flanges for easy water transport.

[0055] See also Figure 1 A bracket 36 is installed below the bar filter box 1;

[0056] The bracket 36 serves to support and fix the grid filter box 1, improving stability and firmness.

[0057] See also Figure 2 A material receiving and pulling groove 32 is provided below the toothed plate 25;

[0058] The receiving pull-out groove 32 serves to collect the ejected impurity particles, allowing users to easily remove the groove by pulling it out for cleaning.

[0059] Please see Figure 1-6 A filtration method for a groundwater treatment grid filter device includes the following steps:

[0060] Step 1: Groundwater enters the water flow chamber 5 of the bar filter box 1 from inlet / outlet 4. Large particles of impurities in the groundwater first reach the first bar filter 6. The bar filter 6 blocks the large particles of impurities through the bar screen 7, thus filtering the water. The filtered water passes through the through holes on the bar screen 7 and reaches the rear of the bar filter 6, where it is filtered a second time by the second bar filter 6. The diameter of the holes in the bar screen 7 of the second bar filter 6 is smaller than that of the first bar screen 7, so that it can block and filter the medium particles of impurities remaining in the groundwater.

[0061] Step 2: The groundwater, filtered by multiple grid screens 7, moves to the grid winding mesh 28. The aperture of the grid winding mesh 28 is smaller than that of the grid screens 7, which allows it to block and filter smaller particles of impurities. This prevents the fine particles of impurities in the groundwater from being blocked and confined at the grid winding mesh 28, while the water flows backward through the holes of the grid winding mesh 28 and is discharged from the inlet and outlet 4 at the other end to the external equipment for subsequent groundwater treatment operations.

[0062] Step 3: The linear screw module 12 drives the screw slider 15 to move above the grid filter 6 that needs to be cleaned. The electric cylinder 16 moves with the screw slider 15. When the grid needs to be cleaned, the electric cylinder 16 drives the piston rod 17 and the first electromagnet 18 to extend downward. The first electromagnet 18 is magnetically fixed to the upper surface of the grid filter 6. Then, the electric cylinder 16 drives the piston rod 17 to retract upward, so that the grid filter 6 passes through the through hole 11 and enters the grid cleaning box 2. This is used to move the used grid filter 6 and wait for the cleaning operation.

[0063] Step 4: The first motor 19 drives the first transmission shaft 20 to rotate at the rotating table 21. By rotating, the position of the electric telescopic rod 22 is adjusted so that the electric telescopic rod 22 faces the grid filter 6. The electric telescopic rod 22 extends towards the grid filter 6, driving the second electromagnet 23 to be magnetically fixed to the frame of the grid filter 6. The first electromagnet 18 is de-energized and demagnetized. The lead screw slider 15 moves to a safe position. The rotating table 21 rotates again, so that the grid filter 6 rotates towards the toothed plate 25. The electric telescopic rod 22 extends forward, so that the grid screen 7 of the grid filter 6 contacts the toothed rod 26 at the toothed plate 25. The toothed rod 26 is inserted into the hole of the grid screen 7, pushing out the impurities that are blocking the hole. The pushed-out impurities fall into the receiving and pulling groove 32 below for collection.

[0064] Step 5: After the front-end filtration, the bar screen 28 removes finer impurities and particles from the groundwater; the second motor 33 drives the second drive shaft 34 and the take-up roller 27 to rotate, which in turn moves the bar screen 28 at the unwind roller 30, so that the new bar screen 28 moves into the water flow chamber 5 for blocking and filtration. The previously used bar screen 28 is moved and wound up onto the take-up roller 27 along the guide roller 31 for placement. The new bar screen 28 can be replaced periodically by winding and moving until the bar screen 28 is completely wound up.

[0065] Step 6: After the grid is wound up, the grid winding net 28 is located on the winding roller 27 in the grid cleaning box 2. Subsequently, the wound grid winding net 28 can be removed from the winding roller 27 for cleaning and replacement by opening the upper cover plate 35. After cleaning and replacement, the two ends of the grid winding net 28 are respectively loaded onto the unwinding roller 30 and the winding roller 27 for use.

[0066] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A groundwater treatment grid filtration device, comprising a grid filter box (1), a grid cleaning box (2) installed above the grid filter box (1), a water flow chamber (5) provided inside the grid filter box (1), a plurality of through holes (11) provided between the grid cleaning box (2) and the grid filter box (1), and a plurality of grid filters (6) installed inside the water flow chamber (5); Its features are: Also includes: A linear screw module (12) is installed at the top inside the bar screen cleaning box (2). The linear screw module (12) includes a ball screw (13) and a screw motor (14). A screw slider (15) is installed on the outer wall of the ball screw (13). An electric cylinder (16) is installed on the outer wall of the lower surface of the screw slider (15). The electric cylinder (16) includes a piston rod (17). A first electromagnet (18) is installed at the lower end of the piston rod (17), and the first electromagnet (18) is magnetically connected to the bar screen filter (6). A first motor (19) is installed on the outer wall of the front end of the grid filter box (1). The output end of the first motor (19) is provided with a first drive shaft (20). A rotating platform (21) is installed at one end of the first drive shaft (20). Multiple electric telescopic rods (22) are installed on the outer wall of the rotating platform (21). A second electromagnet (23) is installed at the telescopic end of the electric telescopic rod (22), and the second electromagnet (23) is magnetically connected to the grid filter (6).

2. The groundwater treatment bar filter device according to claim 1, characterized in that: A grid screen (7) is installed on the outer wall of the grid filter (6), a locking block (8) is installed on the lower surface of the grid filter (6), a combination mounting base (9) is installed below the grid filter (6), a slot (10) is provided on the outer wall of the combination mounting base (9), and the grid filter (6) is engaged with the slot (10) through the locking block (8).

3. A groundwater treatment bar filter device according to claim 2, characterized in that: A mounting bracket (24) is installed on one side inside the grid cleaning box (2). A toothed plate (25) is installed at one end of the mounting bracket (24). Multiple toothed rods (26) are provided on the outer wall of the toothed plate (25), and the toothed rods (26) have the same hole distribution as the grid screen (7).

4. A groundwater treatment bar filter device according to claim 3, characterized in that: A second motor (33) is installed on one side of the first motor (19). A second drive shaft (34) is provided at the output end of the second motor (33). A take-up roller (27) is installed at one end of the second drive shaft (34), and the second motor (33) is connected to the take-up roller (27) through the second drive shaft (34).

5. A groundwater treatment bar filter device according to claim 4, characterized in that: An unwinding box (29) is installed at the bottom inside the water flow cavity (5). An unwinding roller (30) is installed inside the unwinding box (29). A grid winding net (28) is provided between the unwinding roller (30) and the winding roller (27). A guide roller (31) is installed above the unwinding box (29). A baffle (37) is provided between the unwinding box (29) and the guide roller (31).

6. A groundwater treatment bar filter device according to claim 5, characterized in that: A top cover plate (35) is installed on the outer wall of the upper surface of the bar grid cleaning box (2) via a hinge.

7. A groundwater treatment bar filter device according to claim 6, characterized in that: The front and rear ends of the grid filter box (1) are equipped with end cover plates (3), and the outer wall of the end cover plate (3) is provided with inlet and outlet (4), and the inlet and outlet (4) are connected to the water flow cavity (5).

8. A groundwater treatment bar filter device according to claim 7, characterized in that: A bracket (36) is installed below the grid filter box (1).

9. A groundwater treatment bar filter device according to claim 8, characterized in that: A material receiving and pulling groove (32) is provided below the toothed plate (25).

10. A filtration method for a groundwater treatment bar filter device, implemented based on the groundwater treatment bar filter device according to claim 9, characterized in that, Includes the following steps: Step 1: Groundwater enters the water flow chamber (5) of the bar filter box (1) from the inlet and outlet (4). Large particles of impurities in the groundwater first reach the first bar filter (6). The bar filter (6) blocks the large particles of impurities through the bar screen (7), thus filtering the water. The filtered water passes through the through holes on the grid screen (7) and reaches the back of the grid filter (6). It is then filtered again by the second grid filter (6). The diameter of the holes in the grid screen (7) of the second grid filter (6) is smaller than that of the first grid screen (7), so that it can block and filter the medium-sized impurities remaining in the groundwater. Step 2: The groundwater filtered by multiple grid screens (7) moves to the grid winding screen (28). The aperture of the grid winding screen (28) is smaller than that of the grid screen (7), so that it can block and filter smaller particles of impurities. This prevents the fine particles of impurities in the groundwater from being blocked and restricted at the grid winding screen (28), while the water flows backward through the holes of the grid winding screen (28) and is discharged from the inlet and outlet (4) at the other end to the external equipment for subsequent groundwater treatment operations. Step 3: The lead screw linear module (12) drives the lead screw slider (15) to move above the grid filter (6) to be cleaned. The electric cylinder (16) moves with the lead screw slider (15). When the grid needs to be cleaned, the electric cylinder (16) drives the piston rod (17) and the first electromagnet (18) to extend downward. The first electromagnet (18) is magnetically fixed to the upper surface of the grid filter (6). Then, the electric cylinder (16) drives the piston rod (17) to retract upward, so that the grid filter (6) passes through the through hole (11) and enters the grid cleaning box (2) to move the used grid filter (6) and wait for the cleaning operation. Step 4: The first motor (19) drives the first transmission shaft (20) to rotate at the rotating table (21). By rotating, the position of the electric telescopic rod (22) is adjusted so that the electric telescopic rod (22) faces the grid filter (6). The electric telescopic rod (22) extends towards the grid filter (6) and drives the second electromagnet (23) to magnetically fix itself on the frame of the grid filter (6). The first electromagnet (18) is de-energized and demagnetized. The lead screw slider (15) moves to avoid the position. The rotating table (21) rotates again so that the grid filter (6) rotates towards the toothed plate (25). The electric telescopic rod (22) extends forward so that the grid screen (7) of the grid filter (6) contacts the toothed rod (26) at the toothed plate (25). The toothed rod (26) is inserted into the hole of the grid screen (7) to push out the impurity particles that block the hole. The pushed-out impurity particles fall into the receiving and pulling groove (32) below for collection. Step 5: After the front-end filtration, the bar screen (28) removes finer impurities from the groundwater. The second motor (33) drives the second drive shaft (34) and the winding roller (27) to rotate. The rotation drives the bar screen (28) at the unwinding roller (30) to move, so that the new bar screen (28) moves into the water flow chamber (5) for blocking and filtration. The previously used bar screen (28) is moved and wound up onto the winding roller (27) along the guide roller (31) for placement. The new bar screen (28) can be replaced periodically by winding and moving until the bar screen (28) is wound up. Step 6: After the grid is wound up, the grid winding net (28) is located on the winding roller (27) in the grid cleaning box (2). The wound grid winding net (28) can be removed from the winding roller (27) for cleaning and replacement by opening the upper cover plate (35). After cleaning and replacement, the two ends of the grid winding net (28) are loaded onto the unwinding roller (30) and the winding roller (27) respectively for use.

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