Underground purification device of coal-bed gas well

Abstract

The underground purification device comprises a purification box, a purification device body is arranged on the inner side of the purification box, the purification device body comprises an input pipe, a filter plate, a drain outlet and a water purification bin, the input pipe is connected to the top end of the purification box, the filter plate is installed in the purification box, the drain outlet is formed in one side of the purification box, and the water purification bin is arranged below the filter plate. One end of the input pipe is connected with a quick clamping device, the quick clamping device comprises a first motor, a small gear, a large gear, a lead screw, a fixing plate, limiting plates, an insertion pipe, a sleeve, an insertion mechanism, a rubber ring, a sliding sleeve, a matching block and a matching groove, the first motor is connected with the small gear, the large gear sleeves the outer side of the sleeve, the lead screw is connected with the sliding sleeve, and the limiting plates are arranged on the two sides of the fixing plate. The rubber ring is installed in the sleeve, the sleeve is sleeved with the sliding sleeve, the matching block is installed in the matching groove, and a cleaning device is installed in the purification box. According to the air purifier, the operation complexity and the maintenance cost caused by the fact that the purification bin is frequently taken out for cleaning are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of underground purification of coalbed methane wells, and more specifically, to an underground purification device for coalbed methane wells. Background Art

[0002] In the prior art, underground purification devices for coalbed methane wells mainly purify and filter sewage by placing a purification chamber directly into the well. This method can directly treat sewage in the well, thereby reducing the demand for sewage treatment facilities on the ground and achieving the effect of direct underground purification. However, this purification method has certain operational and maintenance challenges. Since the purification chamber needs to be taken out for cleaning or replacement of filter materials after the purification effect decreases, this process not only increases the complexity of the operation, but also the frequent maintenance operations increase costs, affecting the continuous operation efficiency of the purification device.

[0003] Secondly, in order to solve the limitations of the internal purification tank, some new technologies have adopted the design of an external purification tank. This design sets the purification device outside the well and transports the sewage in the well to the external purification tank for treatment through pipes. This configuration facilitates the maintenance of the purification tank and the replacement of filter plates, but it also faces the problem of filter plates being clogged by impurities such as sludge after long-term use. The blockage of the filter plate not only reduces the purification efficiency, but may also cause the pressure of the filtration system to increase, affecting the stability and safety of the entire system.

[0004] In addition, whether it is a built-in or external purification chamber, the existing technology is usually cumbersome in the connection and release operations of the pipeline. Traditional pipeline connection and release mostly rely on manual operation, which is not only labor-intensive but also inefficient. This cumbersome operation process prolongs maintenance time and increases the risk of operational errors, especially in emergency situations where rapid adjustment or replacement of pipelines is required. The inability to respond quickly greatly affects the flexibility of operation and the response speed of the system. Utility Model Content

[0005] 1. Technical issues to be solved

[0006] In view of the problems existing in the prior art, the utility model provides an underground purification device for a coalbed methane well to solve the technical problems mentioned in the background technology.

[0007] (II) Technical solution

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an underground purification device for a coalbed methane well, comprising a purification box, a purification device is arranged inside the purification box, the purification device comprises an input pipe, a filter plate, a sewage outlet and a clean water tank, the input pipe is connected to the top of the purification box, the filter plate is installed in the purification box, the sewage outlet is opened on one side of the purification box, the clean water tank is arranged below the filter plate, one end of the input pipe is connected to a quick-clamp device, the quick-clamp device comprises a first motor, a pinion, a large gear, a lead screw, a fixing plate, a limiting plate, a plug-in tube, a sleeve, a plug-in mechanism, a rubber ring, a sliding sleeve, a matching block and a matching groove, the first motor is installed outside the sleeve, the output end of the first motor and the pinion gear The large gear is movably mounted on the outside of the sleeve, and the large gear is meshed with the small gear. The lead screw and the sleeve are movably connected through threads, and the small gear is fixedly connected to one end of the lead screw. The fixed plate is fixedly connected to the outside of the sleeve. The limit plates are arranged on both sides of the fixed plate, and the limit plates are fixedly arranged on the lead screw. Opposite threads are arranged at both ends of the lead screw. One end of the plug-in tube can be removably inserted into the sleeve. The sleeve is fixedly connected to the clean water tank and one end of the input pipe. The rubber ring can be removably installed in the sleeve. The sleeve is mounted on the outside of the sleeve. The matching groove is opened on the side wall of the sleeve. The matching block is slidably installed in the matching groove. A cleaning device is installed in the purification box.

[0009] The utility model is further configured that the plug-in mechanism includes a plug-in slot and a plug-in frame, the plug-in slot is arranged outside the plug-in tube, one end of the plug-in frame is inserted into the plug-in slot, and both ends of the plug-in frame are fixedly connected to the matching block.

[0010] The utility model is further configured that a limit block is provided on the outer side of the sliding sleeve, a limit groove is provided on the outer side of the sleeve, and the limit block is slidably installed in the limit groove.

[0011] The utility model is further configured such that a sealing groove is provided on the inner side of the sleeve, a sealing ring is provided on the outer side of the plug-in tube, and the sealing ring is matched with the sealing groove. The configuration of the above components further strengthens the sealing performance of the pipeline connection.

[0012] The utility model is further configured such that the cleaning device includes a cache bin, a nozzle and a water pipe, the cache bin can be movably installed in the purification box, the nozzle is installed at one end of the cache bin, the water pipe output end and one side of the cache bin are movably connected, and the cleaning device can realize the cleaning of the filter plate.

[0013] The utility model is further configured that a driven wheel is provided on the other side of the cache bin, a driving wheel is provided on one side of the driven wheel, and the driving wheel and the driven wheel are meshed with each other.

[0014] The utility model is further configured that a second motor is provided outside the purification box, and an output end of the second motor is connected to a driving wheel.

[0015] The utility model is further configured as follows: a baffle is provided on one side of the sewage outlet, a cylinder is provided on the top of the purification box, a piston rod is provided on the output end of the cylinder, the bottom end of the piston rod is connected to the top of the baffle, a slide groove is provided on one side of the purification box, and the baffle is slidably installed in the slide groove. The arrangement of the above components can ensure that debris can be discharged.

[0016] (III) Beneficial effects

[0017] Compared with the prior art, the utility model provides an underground purification device for coalbed methane wells, which has the following beneficial effects:

[0018] 1. The purification device uses a filter plate structure to effectively filter sewage, leaving impurities above the filter plate, while the filtered clean water enters the clean water tank. This design directly improves the purification efficiency, ensures the cleanliness and safety of the internal environment of the coalbed methane well, and also reduces the operational complexity and maintenance costs caused by frequent removal of the purification tank for cleaning.

[0019] 2. The quick-clamp device realizes the fast and accurate connection between the plug-in tube and the casing through the interaction of multiple components such as the first motor, small gear, large gear and screw. This mechanized quick connection mechanism significantly improves operating efficiency and reduces labor intensity, especially in emergency situations when the pipeline needs to be quickly replaced or adjusted. It can effectively shorten the response time and enhance the flexibility and adaptability of the system.

[0020] 3. The design of the cleaning device achieves efficient and all-round cleaning of the filter plate through the combination of multiple components such as the buffer bin, nozzle and water pipe. Water is transported to the buffer bin through the water pipe, and then evenly sprayed onto the filter plate by the nozzle, effectively removing impurities and sludge on the filter plate and maintaining the purification efficiency of the filter plate. In addition, through the coordinated work of the baffle and the cylinder, the debris after cleaning can be discharged smoothly, further improving the convenience of maintenance and the reliability of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the overall structure of an underground purification device for a coalbed methane well in the utility model;

[0022] Figure 2 It is a schematic diagram of the cross-sectional structure in the utility model;

[0023] Figure 3 This is a schematic diagram of the structure of the cache part of the utility model;

[0024] Figure 4It is a schematic diagram of the cross-sectional structure at a second angle in the utility model;

[0025] Figure 5 It is a cross-sectional structural diagram of the quick card device part of the utility model;

[0026] Figure 6 It is a cross-sectional structural schematic diagram of the second angle of the quick clamp device in the utility model.

[0027] In the figure: 1. purification box; 2. input pipe; 3. filter plate; 4. sewage outlet; 5. clean water tank; 6. first motor; 7. small gear; 8. large gear; 9. lead screw; 10. fixed plate; 11. limit plate; 12. plug-in tube; 13. sleeve; 14. rubber ring; 15. sliding sleeve; 16. matching block; 17. matching groove; 18. plug-in groove; 19. plug-in frame; 20. limit block; 21. limit groove; 22. sealing groove; 23. sealing ring; 24. cache; 25. nozzle; 26. water pipe; 27. driven wheel; 28. driving wheel; 29. ​​second motor; 30. baffle; 31. cylinder; 32. piston rod; 33. slide groove. DETAILED DESCRIPTION

[0028] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0029] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0030] In the present invention, unless otherwise specified, directions such as "up" and "down" are usually used in reference to the directions shown in the drawings, or in reference to the vertical, perpendicular or gravity direction; similarly, for ease of understanding and description, "left" and "right" are usually used in reference to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directions are not used to limit the present invention.

[0031] See also Figure 1-6A downhole purification device for a coalbed methane well comprises a purification box 1, a purification device is arranged inside the purification box 1, the purification device comprises an input pipe 2, a filter plate 3, a sewage outlet 4 and a clean water tank 5, the input pipe 2 is connected to the top of the purification box 1, the filter plate 3 is installed in the purification box 1, the sewage outlet 4 is opened on one side of the purification box 1, the clean water tank 5 is arranged below the filter plate 3, one end of the input pipe 2 is connected with a quick card device, the quick card device comprises a first motor 6, a pinion 7, a large gear 8, a lead screw 9, a fixing plate 10, a limiting plate 11, a plug-in tube 12, a sleeve 13, a plug-in mechanism, a rubber ring 14, a sliding sleeve 15, a matching block 16 and a matching groove 17, the first motor 6 is installed outside the sleeve 13, the output end of the first motor 6 is connected to the pinion 7, and the large gear 8 can be The movable sleeve is arranged on the outside of the sleeve 13, and the large gear 8 and the small gear 7 are meshed, the lead screw 9 and the sliding sleeve 15 are movably connected by threads, and the small gear 7 is fixedly connected to one end of the lead screw 9, the fixed plate 10 is fixedly connected to the outside of the sleeve 13, the limit plates 11 are arranged on both sides of the fixed plate 10, and the limit plates 11 are fixedly arranged on the lead screw 9, and opposite threads are arranged at both ends of the lead screw 9. One end of the plug-in tube 12 can be detachably inserted into the sleeve 13, the sleeve 13 is fixedly connected to the clean water tank 5 and one end of the input pipe 2, the rubber ring 14 can be detachably installed in the sleeve 13, the sliding sleeve 15 is sleeved on the outside of the sleeve 13, the matching groove 17 is opened on the side wall of the sliding sleeve 15, the matching block 16 is slidably installed in the matching groove 17, and a cleaning device is installed in the purification box 1.

[0032] The plug-in mechanism includes a plug-in slot 18 and a plug-in frame 19 . The plug-in slot 18 is arranged outside the plug-in tube 12 . One end of the plug-in frame 19 is inserted into the plug-in slot 18 . Both ends of the plug-in frame 19 are fixedly connected to the matching block 16 .

[0033] A limit block 20 is disposed on the outer side of the sliding sleeve 15 , and a limit groove 21 is provided on the outer side of the sleeve 13 , in which the limit block 20 is slidably installed.

[0034] A sealing groove 22 is formed on the inner side of the sleeve 13 , and a sealing ring 23 is formed on the outer side of the plug-in tube 12 . The sealing ring 23 is matched with the sealing groove 22 .

[0035] In this embodiment, when the device is needed to be used for underground purification, the first motor 6 is started first. The first motor 6 drives the large gear 8 to rotate outside the casing 13 through the small gear 7 connected to the output end, and then the large gear 8 drives the small gears 7 meshing therewith to rotate, and then the small gear 7 drives the lead screw 9 to rotate. Due to the mutual limitation of the limit plate 11 and the fixed plate 10, the lead screw 9 will not slide while rotating. Since the sliding sleeve 15 and the lead screw 9 are movably connected through threads, and opposite threads are provided at both ends of the lead screw 9, then the sliding sleeves on both sides 15 will move relatively inward, and at the same time, the sliding sleeve 15 will drive the limiting block 20 set on the inner side to slide in the limiting groove 21, and then the matching block 16 will slide in the matching groove 17. Due to the special structural design of the matching block 16 and the matching groove 17, when the sliding sleeve 15 moves, the matching block 16 will move outward while the sliding sleeve 15 moves inward, and then the matching block 16 will drive the plug-in frame 19 to move outward. When the sliding sleeve 15 cannot move, the first motor 6 is turned off. At this time, one end of the plug-in frame 19 is flush with the inner wall of the sleeve 13, and then the plug-in pipe 12 is inserted Insert it into the inner side of the sleeve 13, and make one end of the plug-in tube 12 abut against the rubber ring 14, then make the first motor 6 reverse, then the small gear 7 and the large gear 8 will move in the opposite direction, then the lead screw 9 will rotate in the opposite direction, thereby driving the sliding sleeve 15 to reset, and then the sliding sleeve 15 will drive the matching block 16 to reset through the matching groove 17, and then the plug-in frame 19 will reset and slowly insert into the plug-in groove 18. Due to the special chamfer design inside the plug-in groove 18, when the plug-in frame 19 is fully inserted into the plug-in groove 18, the plug-in frame 19 will drive the plug-in tube 12 to press the rubber ring 14. Tighten, and at the same time, multiple sealing rings 23 arranged on the outside of the plug-in tube 12 will be snapped into the corresponding sealing groove 22 one by one, and then the first motor 6 can be turned off, and then the sewage in the coalbed methane well is pumped out through the external power equipment, and then transported to the purification box 1 through the input pipe 2, the sewage will be filtered and purified by the filter plate 3 arranged in the purification box 1, and then impurities will remain above the filter plate 3, and the filtered and purified water will enter the clean water tank 5 arranged below, and then be discharged back into the coalbed methane well through the pipeline connected to the output end of the clean water tank 5, thereby realizing the underground purification of the coalbed methane well.

[0036] See also Figure 1-4 As an implementation method of the cleaning device: the cleaning device includes a cache bin 24, a nozzle 25 and a water pipe 26, the cache bin 24 can be movably installed in the purification box 1, the nozzle 25 is installed at one end of the cache bin 24, and the output end of the water pipe 26 is movably connected to one side of the cache bin 24.

[0037] A driven wheel 27 is disposed on the other side of the buffer bin 24 , and a driving wheel 28 is disposed on one side of the driven wheel 27 , and the driving wheel 28 and the driven wheel 27 are meshed with each other.

[0038] A second motor 29 is disposed outside the purification box 1 , and an output end of the second motor 29 is connected to the driving wheel 28 .

[0039] A baffle 30 is provided on one side of the sewage outlet 4, a cylinder 31 is provided on the top of the purification box 1, a piston rod 32 is provided on the output end of the cylinder 31, the bottom end of the piston rod 32 is connected to the top of the baffle 30, a slide groove 33 is opened on one side of the purification box 1, and the baffle 30 is slidably installed in the slide groove 33.

[0040] More specifically, after the device has been used for a long time, water is transported to the water pipe 26 through an external device, and then transported to the buffer bin 24 through the water pipe 26, and then sprayed into the purification box 1 through the nozzle 25 connected to one end of the buffer bin 24, so as to rinse the filter plate 3, and then the second motor 29 is turned on, and the second motor 29 drives the driven wheel 27 to rotate through the driving wheel 28 connected to the output end, thereby driving the buffer bin 24 to rotate, and then the spraying angle of the nozzle 25 will be changed, and then the cylinder 31 is turned on, and the cylinder 31 drives the baffle 30 to move upward through the piston rod 32 connected to the output end. The water in the washing machine 1 is then blown up and down, and the water in the washing machine 1 is sucked out of the washing machine 1 and the washing machine 1 is turned off. At the same time, the baffle plate 30 will slide in the slide groove 33, and then the baffle plate 30 will no longer block the sewage outlet 4, and then the washed debris will flow out through the sewage outlet 4 to the external storage device, and a part of the sprayed water will be filtered through the built-in filter plate 3 of the purification box 1 and enter the clean water tank 5 arranged below, and the other part will be filtered through the external filter plate 3 of the purification box 1 and enter the clean water tank 5 arranged below. After cleaning, turn off the first motor 6 and the external conveying equipment, and then open the cylinder 31, so that the cylinder 31 drives the baffle plate 30 through the piston rod 32 to block the sewage outlet 4 again.

[0041] In summary, when the overall equipment is in use or running: when the equipment needs to be used to purify the underground, the first motor 6 is started first, and the first motor 6 drives the large gear 8 to rotate on the outside of the casing 13 through the small gear 7 connected to the output end, and then the large gear 8 drives the small gears 7 meshing with it to rotate, and then the small gear 7 will drive the lead screw 9 to rotate. Due to the mutual limitation of the limit plate 11 and the fixed plate 10, the lead screw 9 will not slide while rotating. Since the sliding sleeve 15 and the lead screw 9 are movably connected by threads, and opposite threads are provided at both ends of the lead screw 9, Then the sliding sleeves 15 on both sides will move relatively inwards, and at the same time the sliding sleeves 15 will drive the limiting blocks 20 set on the inner side to slide in the limiting grooves 21, and then the matching blocks 16 will slide in the matching grooves 17. Due to the special structural design of the matching blocks 16 and the matching grooves 17, when the sliding sleeve 15 moves, the matching blocks 16 will move outwards while the sliding sleeve 15 moves inwards, and then the matching blocks 16 will drive the plug-in frame 19 to move outwards. When the sliding sleeve 15 cannot move, the first motor 6 is turned off. At this time, one end of the plug-in frame 19 is flush with the inner wall of the sleeve 13, and then the plug-in frame 19 is The tube 12 is inserted into the inner side of the sleeve 13, and one end of the plug-in tube 12 is pressed against the rubber ring 14, and then the first motor 6 is reversed, and then the small gear 7 and the large gear 8 will move in the opposite direction, and then the lead screw 9 will rotate in the opposite direction, thereby driving the sliding sleeve 15 to reset, and then the sliding sleeve 15 will drive the matching block 16 to reset through the matching groove 17, and then the plug-in frame 19 will reset and slowly insert into the plug-in groove 18. Due to the special chamfer design inside the plug-in groove 18, when the plug-in frame 19 is fully inserted into the plug-in groove 18, the plug-in frame 19 will drive the plug-in tube 12 to contact the rubber ring 14 The plug-in tube 12 is compressed, and the multiple sealing rings 23 arranged on the outside of the plug-in tube 12 are engaged with the corresponding sealing grooves 22 one by one. Then the first motor 6 is turned off, and the sewage in the coalbed methane well is pumped out through an external power device, and then transported to the purification box 1 through the input pipe 2. The sewage will be filtered and purified by the filter plate 3 arranged in the purification box 1, and then impurities will remain above the filter plate 3. The filtered and purified water will enter the clean water tank 5 arranged below, and then be discharged back into the coalbed methane well through the pipeline connected to the output end of the clean water tank 5, thereby realizing the underground purification of the coalbed methane well.

[0042] After the device has been used for a long time, water is transported to the water pipe 26 through an external device, and then transported to the buffer bin 24 through the water pipe 26, and then sprayed into the purification box 1 through the nozzle 25 connected to one end of the buffer bin 24, so as to rinse the filter plate 3, and then the second motor 29 is turned on, and the second motor 29 drives the driven wheel 27 to rotate through the driving wheel 28 connected to the output end, thereby driving the buffer bin 24 to rotate, and then the spraying angle of the nozzle 25 will be changed, and then the cylinder 31 is turned on, and the cylinder 31 drives the baffle 30 to rise through the piston rod 32 connected to the output end, and at the same time When the baffle plate 30 slides in the slide groove 33, the baffle plate 30 will no longer block the sewage outlet 4, and the washed debris will flow out through the sewage outlet 4 to the external storage device. A part of the sprayed water will be filtered through the built-in filter plate 3 of the purification box 1 and enter the clean water tank 5 arranged below, and the other part will be filtered through the external filter plate 3 of the purification box 1 and enter the clean water tank 5 arranged below. After cleaning, turn off the first motor 6 and the external conveying equipment, and then open the cylinder 31, so that the cylinder 31 drives the baffle plate 30 through the piston rod 32 to block the sewage outlet 4 again.

[0043] In all the schemes mentioned above, the connection between two parts can be selected according to actual conditions by welding, bolt and nut matching connection, bolt or screw connection or other well-known connection methods, which are not described here one by one. In the above, all fixed connections are preferably welded. Although the embodiments of the utility model have been shown and described, it can be understood by ordinary technicians in this field that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the utility model. The scope of the utility model is defined by the attached claims and their equivalents.

Claims

1. An underground purification device for a coalbed methane well, comprising a purification box (1), characterized in that: A purification device is provided inside the purification box (1), and the purification device comprises an input pipe (2), a filter plate (3), a sewage outlet (4) and a clean water tank (5). The input pipe (2) is connected to the top of the purification box (1), the filter plate (3) is installed in the purification box (1), the sewage outlet (4) is opened on one side of the purification box (1), and the clean water tank (5) is arranged below the filter plate (3). One end of the input pipe (2) is connected to a quick-clamp device, and the quick-clamp device comprises a first motor (6), a small gear (7), a large gear (8), a lead screw (9), a fixing plate (10), a limit plate (11), a plug-in pipe (12), a sleeve (13), a plug-in machine (14), and a plurality of plug-in machines (15). The invention relates to a cleaning box (1) comprising a first motor (6) and a small gear (7), a large gear (8) being sleeved on the outside of a sleeve (13), a lead screw (9) and a sleeve (15) being connected by threads, a fixing plate (10) being connected to the outside of the sleeve (13), a limit plate (11) being arranged on the lead screw (9), opposite threads being arranged at both ends of the lead screw (9), a rubber ring (14) being installed in the sleeve (13), a sleeve (15) being sleeved on the outside of the sleeve (13), a matching block (16) being installed in the matching groove (17), and a cleaning device being installed in the cleaning box (1).

2. The underground purification device for coalbed methane well according to claim 1 is characterized in that: The plug-in mechanism comprises a plug-in slot (18) and a plug-in frame (19); the plug-in slot (18) is arranged outside the plug-in tube (12); one end of the plug-in frame (19) is inserted into the plug-in slot (18); and both ends of the plug-in frame (19) are fixedly connected to the matching block (16).

3. The underground purification device for coalbed methane well according to claim 2 is characterized in that: A limit block (20) is provided on the outside of the sliding sleeve (15), a limit groove (21) is provided on the outside of the sleeve (13), and the limit block (20) is slidably installed in the limit groove (21).

4. The underground purification device for coalbed methane well according to claim 3 is characterized by: A sealing groove (22) is provided on the inner side of the sleeve (13), and a sealing ring (23) is provided on the outer side of the plug-in tube (12), wherein the sealing ring (23) is matched with the sealing groove (22).

5. A downhole purification device for a coalbed methane well according to any one of claims 1 to 4, characterized in that: The cleaning device comprises a buffer chamber (24), a nozzle (25) and a water pipe (26); the buffer chamber (24) is movably mounted in the purification box (1); the nozzle (25) is mounted at one end of the buffer chamber (24); and the output end of the water pipe (26) is movably connected to one side of the buffer chamber (24).

6. The underground purification device for coalbed methane well according to claim 5 is characterized by: A driven wheel (27) is provided on the other side of the cache bin (24), and a driving wheel (28) is provided on one side of the driven wheel (27), and the driving wheel (28) and the driven wheel (27) are meshed with each other.

7. The underground purification device for coalbed methane well according to claim 6 is characterized by: A second motor (29) is disposed outside the purification box (1), and an output end of the second motor (29) is connected to a driving wheel (28).

8. The underground purification device for coalbed methane well according to claim 7 is characterized in that: A baffle (30) is provided on one side of the sewage outlet (4); a cylinder (31) is provided on the top of the purification box (1); a piston rod (32) is provided on the output end of the cylinder (31); the bottom end of the piston rod (32) is connected to the top of the baffle (30); a slide groove (33) is provided on one side of the purification box (1); and the baffle (30) is slidably installed in the slide groove (33).

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