Filter screen circulating washing type air purifier

Abstract

The utility model discloses a filter screen circulation washing type air purifier, which comprises a support frame, an air purification assembly, a fan, a shield, an isolation hood and a water tank, a filter screen is arranged in the air purification assembly, the filter screen is in an end-to-end ring belt shape, and the filter screen goes out of a filter air channel, winds a driving roller body and then enters the filter air channel. The upper and lower arc end heads of the air channel plate are folded back in the air filtering channel, and the air filtering channel enters the water tank, winds the rotary drum body, penetrates through the upper and lower brushes for brushing and then enters the air filtering channel to form circulating motion. The supporting frame is composed of a plurality of sets of cross beams, the seven sets of air purification assemblies are arranged in the supporting frame in a stacked mode, the draught fan is installed at the front end of the supporting frame, the two sets of protective covers are arranged, and the two sets of protective covers are installed at the tail of the supporting frame and the front end of the draught fan respectively. The isolation hood is installed at the top of the supporting frame, the water tank is located at the bottom of the supporting frame, and the lower ends of the seven air water purification assemblies are all located in the water tank.

Description

Technical Field

[0001] The utility model relates to the technical field of air purification equipment, in particular to a filter circulation water washing type air purifier. Background Art

[0002] Air purification equipment is a type of equipment used to purify indoor air quality. It provides a clean, healthy and comfortable indoor environment by removing pollutants, odors, particulate matter and other harmful substances in the air.

[0003] The smoke and dust removal mechanisms of actual air purification devices include microporous filtration, water sprinkling and dust reduction, and electrostatic dust collection. However, the existing air purification equipment has the following problems during use: the air filtration flow rate of microporous filtration type dust removal is small, such as the bag-type dust removal equipment in thermal power plants is large in size, the industrial water sprinkling dust removal facilities are large in size, and the electrostatic dust removal requires the air humidity to be maintained at about 60% RH. Based on the above, a new type of air purification device is proposed, which utilizes the mechanism of smoke and dust in the air adhering to the surface of the filter and the water dust reduction mechanism, and sets up multiple layers of water stain filters in the air circulation channel to achieve air purification effects, and has a filter cleaning function. It realizes a large purified air flow rate, a small facility size, no requirements for air humidity, and a self-cleaning filter. The smoke and dust removal mechanism of the actual air purification device includes microporous filtration, water sprinkling and electrostatic dust absorption. In order to ensure the dust removal effect of the dust collector of the device and reduce the air flow resistance to maintain the flow rate, the microporous dust collector is knocked to clean the accumulated dust, or the dust collector is replaced, and the electrostatic dust collector uses reverse voltage to remove the dust on the dust collector. Although the above methods can achieve the purpose of cleaning the dust collector, the degree of automation is not high, and the dust removal effect of the dust collector itself is not good. Therefore, a corresponding technical solution is designed to solve the existing technical problems. Utility Model Content

[0004] The purpose of the utility model is to provide a filter circulating water washing type air purifier, which solves the shortcomings of existing air purification devices. Its air purification mechanism is that air containing smoke and dust passes through multiple layers of moving filters with water stains in the air duct, and the smoke and dust collide with the filter and adhere to the filter, thereby achieving the effect of purifying the air. The filter is cleaned by a brush in a water tank and moves into the air channel to keep the filter mesh clear.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a filter circulation water-washing air purifier, comprising a support frame, an air purification component, a fan, a protective cover, an isolation cover and a water tank, the support frame is composed of a plurality of groups of channel steel horizontal and longitudinal beams, the air purification component is divided into seven groups and is stacked and arranged in the support frame, the fan is installed at the front end of the support frame, discharges the purified air, and attracts the air containing smoke and dust into the air duct, the protective cover is divided into two groups, the two groups of the protective covers are respectively installed at the rear of the support frame and the front end of the fan, the isolation cover is installed at the top of the support frame, the water tank is located at the bottom of the support frame, and the rotary drum support components of the seven groups of the air purification components are all located in the water tank;

[0006] The air purification component comprises a filter, an air duct plate, a partition plate, a driving roller support plate, a return roller support plate, and a brush. The air duct plate, two sets of partition plates, the driving roller support plate and the return roller support plate are stacked and pressed through positioning bolts to form a filtered air channel, wherein the driving roller support plate is installed with a driving roller assembly, the return roller support plate is installed with a rotary roller support assembly, and a filter is arranged in the filtered air channel, and the filter is in the shape of an annular belt connected end to end. The filter exits the filtered air channel, winds around the driving roller body and then enters the filtered air channel, turns back in the filtered air channel through the upper and lower arc ends of the air duct plate, exits the filtered air channel and enters the water box, winds around the rotary roller body, passes through the upper and lower brushes for brushing, and then enters the filtered air channel to form a circulating motion. The driving roller assembly is located above the filtered air channel, and the rotary roller support assembly is located above and below the filtered air channel;

[0007] The isolation cover has a driving roller assembly of an air purification assembly in it, and the edge of the isolation cover is tightly fixed to the crossbeam surface on the support frame.

[0008] The driving roller assembly includes a motor fixing plate, a driving motor, a driving roller body, a lifting plate, a driving roller shaft seat, a driving roller shaft seat fixing plate, a tensioning adjustment screw and a double-headed fixing bolt. Four groups of sliding holes are symmetrically opened at both ends of the driving roller support plate. The motor fixing plate and the driving roller shaft seat fixing plate are respectively slidably installed at the two ends of the driving roller support plate. The double-headed fixing bolts are provided with four groups, two groups of handles pass through the sliding holes and the motor fixing plate, and two groups of handles pass through the sliding holes and the driving roller shaft seat fixing plate. The lifting plates at both ends of the driving roller are respectively installed on the driving roller shaft seat fixing plate below the motor fixing plate. Below the fixed plate, the tension adjustment screw is composed of two screws and a screw handle end pad, the handle pad is implemented on the filtered air channel, and the tension adjustment screw is divided into two groups, one group of screw handles successively passes through the threaded holes of the motor fixing plate light hole lifting plate, and the other group of screw handles successively passes through the threaded holes of the drive roller shaft seat fixing plate light hole lifting plate, the drive motor is installed on the motor fixing plate, the drive roller shaft seat is installed on the drive roller shaft seat fixing plate, the power output D-type shaft of the drive motor is embedded in the shaft end hole of the drive roller body and is fixedly connected with a locking screw, and the other end of the drive roller body is connected to the drive roller shaft seat;

[0009] The rotary roller support assembly includes a rotary roller shaft seat, an adjusting bolt, a rotary roller body, an upper brush and a lower brush. Two groups of slots are symmetrically provided at both ends of the return roller support plate. A positioning clip is fixed at the edge of the slot. A groove is provided on the rotary roller shaft seat and is clamped in the two groups of slots. The adjusting bolt stands in the middle of the slot, passes through the positioning clip hole, and the bolt head is positioned against the positioning clip and then passes through the threaded hole on the rotary roller shaft seat. The rotary roller body is divided into two groups and is symmetrically installed between the two groups of rotary roller shaft seats. The upper brush and the lower brush are symmetrically arranged in the middle of the two rotary roller bodies and fixed at both ends on the two groups of rotary roller shaft seats. The filter passes between the upper brush and the lower brush.

[0010] As a preferred embodiment of the present invention, the mesh number of the filter is between 40 meshes and 100 meshes.

[0011] As a preferred embodiment of the utility model, the water tank includes a box body, a water inlet, a pipeline, a faucet and a sewage outlet. The water inlet is connected to the faucet through a pipeline. The water level automatic control faucet is built into the box body and has a sewage outlet installed at the bottom of the box body.

[0012] As a preferred embodiment of the present invention, the heights of both ends of the bottom of the box body are greater than the height in the middle, and the sewage outlet is installed in the middle of the box body.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0014] The air purifier designed in this scheme has a filter cleaning function. It adopts the air purification method of smoke collision filter attachment. The air passing resistance is small. Under the same air purification facility volume, it has the advantage of large purified air flow rate. It is particularly suitable for production plants with large exhaust gas emission flow. Because of the filter cleaning function, the air purification with large smoke content in the air can maintain a stable purification function and air purification index, and there is no humidity requirement for the purified air. The air purifier is made of corrosion-resistant and high-temperature resistant materials, and can purify air containing corrosive gases and high-temperature air. Targeted use of different filter cleaning liquids can purify the corresponding components in the air. Disinfectant can be added to the water for cleaning the filter, which can be used in indoor venues to disinfect and sterilize the air. Due to the friction between the air flowing in the air duct and the water film on the filter, oxygen negative ions are produced. When used in indoor venues where people gather, the air there can have the effect of after rain. Fragrance can be added to the water for cleaning the filter to make the air fragrant. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a southwest isometric view of the overall structure of the utility model;

[0016] Figure 2 It is a southwest isometric view of the overall split structure of the utility model;

[0017] Figure 3 This is a front view of the air purification component of the utility model;

[0018] Figure 4 It is a southeast isometric view of the section of the air purification assembly of the utility model;

[0019] Figure 5 It is a cross-sectional schematic diagram of the water tank of the utility model;

[0020] In the figure: 1. Support frame; 2. Air purification component; 3. Fan; 4. Protective cover; 5. Isolation cover; 6. Water tank; 8. Air duct plate; 9. Partition plate; 10. Drive roller support plate; 11. Positioning bolt; 12. Return roller support plate; 14. Filter air channel; 15. Filter screen; 16. Motor fixing plate; 17. Drive motor; 18. Drive roller body; 19. Lifting plate; 20. Drive roller shaft seat; 21. Tensioning adjustment screw; 22. Stud fixing bolt; 23. Sliding hole; 24. Rotary roller shaft seat; 25. Tensioning adjustment bolt; 26. Rotary roller body; 27. Upper brush; 28. Lower brush; 29. ​​Slot; 30. Water tank body; 31. Water inlet; 32. Pipeline; 33. Faucet; 34. Sewage outlet; 35. Transition plate; 36. Positioning card; 37. Drive roller shaft seat fixing plate; 38. Frame bolt. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-5 The utility model provides a technical solution: a filter circulation water washing air purifier, including a support frame 1, an air purification component 2, a fan 3, a protective cover 4, an isolation cover 5, a water tank 6, and a transition plate 35. The support frame 1 is composed of a plurality of groups of channel steel longitudinal beams and cross beams 7. The air purification component 2 is divided into seven groups, and the transition plates 35 are sandwiched between the seven groups and stacked in the support frame 1. Six frame bolts 38 pass through the support frame 1, through the transition plates 35, through the seven groups of air purification components 2 and the transition plates 35 between the purification components 2, and then through the transition plates 35 and the support frame 1, and are pressed and fixed with the support frame 1. The hole position on the transition plate 35 is the same as that of the air duct plate 8, and the thickness is greater than twice the thickness of the head of the positioning bolt 11 by 2 mm. The head of the positioning bolt 11 is inserted into the hole corresponding to the positioning bolt 11 to achieve a superimposed sealing effect between the purification components 2. The fan 3 is installed at the front end of the support frame 1, and the shield 4 is divided into two groups. The two groups of shields 4 are respectively installed at the rear of the support frame 1 and the front end of the fan 3. The isolation cover 5 is installed at the top of the support frame 1. The water tank 6 is located at the bottom of the support frame 1. The rotary drum support assembly of the seven groups of air purification components 2 is located in the water tank 6;

[0023] The air purification assembly 2 includes an air duct plate 8, a partition plate 9, a drive roller assembly, a return roller support assembly, a filter screen 15, an upper brush 27 and a lower brush 28. The air duct plate 8, two partition plates 9, a drive roller support plate 10 and a return roller support plate 12 are stacked to form a filtered air channel 14. Four positioning bolts 11 pass through the stack to position and tighten. The positioning bolts 11 are composed of a long cylindrical nut and bolts at both ends of the nut. The nut passes through the stack and the bolts at both ends are tightened. The driving roller assembly is provided with a rotary roller support assembly on the return roller support plate 12. A filter screen 15 is provided in the filter air passage 14. The air duct plate 8 is hollow and has two partition plates 9 sandwiched between the two air duct plates 8. The space between the filter screen and the air duct is formed. The thickness of the partition plate 9 is 0.03mm greater than the thickness of the filter screen 15. The filter screen 15 is combined from head to tail into an annular belt shape. It enters and exits the filter air passage 14 from the middle of the left and right two groups of partition plates 9, wraps around the upper and lower arc ends of the air duct plate 8, and returns in the filter air passage. 14 constitutes a multi-layer filter screen, in and out of the filtered air channel 14, wrapped around the driving roller body 19, out of the filtered air channel 14 into the water tank 6, wrapped around the rotary roller body 26, passed through the middle of the upper brush 27 and the lower brush 28, wrapped around another rotary roller 26 and entered the filtered air channel 14, and as the driving roller body 18 rotates, the driving filter screen 15 moves up and down in the filtered air channel 14 in a folding shape, enters and exits the water tank, wraps around the two rotary roller bodies 26 and moves between the upper brush 27 and the lower brush 28, forming a circulating motion of the filter screen 15 of the air purification component 2, the driving roller assembly is located above the filtered air channel 14, the rotary roller support assembly is located below the filtered air channel 14, the upper brush 27 and the lower brush 28 are located between the two rotary roller bodies 26, and the two ends are respectively fixed on the rotary roller shaft seat 24, the upper and lower brushes clamp the filter screen, and the filter screen is cleaned in the moving state, and in the process of air flowing through the air channel 14, the smoke and dust particles in the air collide and adhere to the filter screen 15 in the filtered air channel 14, so as to achieve air purification.

[0024] Seven groups of driving roller assemblies of the air purification assembly 2 and corresponding electric control circuits are installed inside the isolation cover 5. The edge of the isolation cover 5 is tightly fixed to the upper crossbeam of the support frame 1 with screws, so that the filtered air channel 14 is closed and isolated from the outside.

[0025] The water tank 6 is provided with seven groups of rotary drum support components of the air purification components. The edge of the water tank 6 is attached to the lower cross beam of the support frame 1 and is fixed tightly with screws to close and isolate the air passage from the outside.

[0026] The driving roller assembly includes a motor fixing plate 16, a driving motor 17, a driving roller body 18, a lifting plate 19, a driving roller shaft seat fixing plate 37, a driving roller shaft seat 20, a tensioning adjustment screw 21 and a double-headed fixing bolt 22. The double-headed fixing bolt 22 is in the shape of a double handle with a common block head. Four sets of sliding holes 23 are symmetrically opened at both ends of the driving roller support plate 10. The motor fixing plate 16 and the driving roller shaft seat fixing plate 37 are respectively slidably installed at the two ends of the driving roller support plate 10. The double-headed fixing bolt 22 has a Four groups, two groups of handles respectively pass through the sliding hole 23, the motor fixing plate 16, and two groups of handles respectively pass through the sliding hole 23 and the driving roller shaft seat fixing plate 37. The two ends of the driving roller body 18 are provided with lifting plates 19, which are respectively installed under the motor fixing plate 16 and under the driving roller shaft seat fixing plate 37. There are two threaded holes on the lifting plate 19. The tensioning adjustment screw 21 is composed of two screws and a screw handle end pad. The handle pad is implemented on the filtered air channel. The tensioning adjustment screw 21 is divided into two groups, one group The handle passes through the optical hole of the motor fixing plate 16 and the threaded hole of the lifting plate 19 in turn, and one group passes through the optical hole of the driving roller shaft seat fixing plate 37 and the threaded hole on the lifting plate 19 in turn. By rotating and adjusting the tension adjustment screw 21, the lifting plate 19 can be driven to be lifted and lowered, and the motor fixing plate 16 or the driving roller shaft seat fixing plate 37 can be pushed in or loosened, thereby adjusting the distance between the driving roller body 18 and the filtered air channel 14 to achieve the tightness adjustment of the filter 15; after the adjustment is completed, the stud bolts 22 are tightened to clamp the motor fixing plate 16 of the driving roller support plate 10 or the driving roller shaft seat fixing plate 38 of the driving roller support plate 10, so as to fix the position of the driving roller body 18, and the driving motor 17 is installed on the motor fixing plate 16, and the output D-type shaft of the driving motor 17 is embedded in the shaft end hole of the driving roller body 18 and fixedly connected with the locking screw, and the other end of the driving roller body 18 is connected to the driving roller shaft seat 20, and the driving motor 17 drives the driving roller body 18 to rotate, and the driving roller body 18 rotates to drive the filter 15 to move.

[0027] The rotary roller support assembly includes a rotary roller shaft seat 24, an adjusting bolt 25, a rotary roller body 26, an upper brush 27 and a lower brush 28. Two groups of slots 29 are symmetrically provided at both ends of the return roller support plate 12. The positioning card 36 is fixed to the edge of the slot of the return roller support plate 12 with screws. There are grooves on the rotary roller shaft seat 24, which are divided into two groups and are respectively clamped in the two groups of slots 29. The adjusting bolt 25 stands in the middle of the slot, and the handle passes through the light hole of the positioning card 36 and then passes through the threaded hole on the rotary roller shaft seat 24. The head of the adjusting bolt 25 is attached to the positioning card, and the joint of the head and the handle is clamped in the light hole of the positioning card 36. The adjusting bolt 25 is rotated to pull the rotary roller shaft seat 24 up and down in the slot 29. The filter 15 moves, and then adjusts and positions the distance between the rotary drum body 26 and the filtered air channel 14, so as to adjust the tightness of the filter 15. The rotary drum body 26 is divided into two groups and is symmetrically installed between the two groups of rotary drum shaft seats 24. An upper brush 27 and a lower brush 28 are arranged in the middle of the two rotary drum bodies 26. The brushes are symmetrically arranged up and down, and both ends are fixed on the two groups of rotary drum shaft seats 24. The filter 15 exits the filtered air channel 14 and enters the water tank body 6 to wrap around the rotary drum body 26, passes between the upper brush 27 and the lower brush 28 and is located in the middle of the two, wraps around the rotary drum body 26 on the other side to enter the filtered air channel 14, and the filter 15 passes between the upper brush 27 and the lower brush 28 to be brushed.

[0028] In a further improvement, the mesh number of the filter screen 15 is 40 mesh to 100 mesh.

[0029] Further improved, the water tank 6 includes a box body 30, a water inlet 31, a pipeline 32, a faucet 33 with an automatic water level control function and a sewage outlet 34. The water inlet 31 is connected to the faucet 33 through the pipeline 32. The faucet 33 is built in the box body 30. The sewage outlet 34 is installed at the bottom of the box body 30. Water is led to the faucet 33 through the pipeline 32, and water is put into the water tank 6 through the faucet 33. The water level inside the water tank 6 is flush with the arc surface on the rotary drum, and the rotary drum brush filter is immersed in water to brush the filter.

[0030] Specifically, the heights of both ends of the bottom of the box body 30 are greater than the height in the middle, and the drain outlet 34 is installed in the middle of the box body 30 . This design makes it easy to flush the dirt on the surface of the filter and discharge it through the drain outlet 34 .

[0031] When in use: the utility model guides the air through the fan 3, the outside air is introduced and filtered through the protective cover 4, and the purified air is circulated through the filter air channels 14 of the seven groups of air purification components 2. In order to improve the air purification standard, the size of the support frame can be increased and more air purification components 2 can be stacked.

[0032] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. Filter circulating water washing air purifier, characterized by: The invention comprises a support frame (1), an air purification component (2), a fan (3), a protective cover (4), an isolation cover (5) and a water tank (6), wherein the support frame (1) is composed of a plurality of groups of cross beams (7), the air purification component (2) is divided into seven groups and is stacked and arranged in the support frame (1), the fan (3) is installed at the front end of the support frame (1), the protective cover (4) is divided into two groups, and the two groups of protective covers (4) are respectively installed at the rear of the support frame (1) and the front end of the fan (3), the isolation cover (5) is installed at the top of the support frame (1), the water tank (6) is located at the bottom of the support frame (1), and the lower ends of the seven groups of air purification components (2) are all located in the water tank (6); The air purification component (2) comprises an air duct plate (8), a partition plate (9), a driving roller support plate (10), four sets of positioning bolts (11), and a return roller support plate (12), which are stacked to form a filtered air channel (14) and a filter screen (15). The four positioning bolts (11) pass through the stacked body for positioning and tightening. The positioning bolts (11) are composed of a long cylindrical nut and bolts at both ends of the nut. The nut passes through the stacked body and is tightened by the bolts at both ends. The filter screen (15) is connected from head to tail to form an annular belt. The filter air passage (14) is in and out of the middle of the two right partition plates (9), and the upper and lower arc ends of the wind duct plate (8) are folded back. A plurality of filter screens (15) are formed in the filter air passage (14), and the filter air passage (14) is in and out of the filter air passage (14), and the filter air passage (15) is wound around the driving roller body (18). The filter air passage (14) enters the water tank (6) and is wound around the rotary roller body (26). The filter air passage (15) passes through the upper brush (27) and the lower brush (28) located between the upper brush (27) and the lower brush (28), and is wound around the other rotary roller body (26) and enters the filter air passage (14). The air passage (14) drives the filter screen (15) to move up and down in the filter air passage (14) as the driving roller body (18) rotates, and the inlet and outlet water tanks (6) are wound around the two rotating roller bodies (26) and move between the upper brush (27) and the lower brush (28), thereby forming a circulating movement of the filter screen (15) of the air purification component (2), wherein the upper brush (27) and the lower brush (28) are located between the two rotating roller bodies (26), and the two ends are respectively fixed with rotating roller shaft seats (24). The driving roller support plate (10) and the return roller support plate (12) are formed by extending the air duct plate (8); a driving roller assembly is installed on the driving roller support plate (10); a rotary roller support assembly is installed on the return roller support plate (12); the air duct plate (8) is hollow in a circular shape; two partition plates (9) are sandwiched between the two air duct plates (8); a space is formed in the middle for the filter to enter the air channel from top to bottom; the thickness of the partition plate (9) is 0.03 mm greater than the thickness of the filter (15); The driving roller assembly: the driving roller support plate (10) is symmetrically provided with four groups of sliding holes (23), a motor fixing plate (16), a driving motor (17), a driving roller shaft seat fixing plate (37), a driving roller shaft seat (20) and double-headed fixing bolts (22) at both ends, which are respectively slidably installed at the two ends of the driving roller support plate (10). The double-headed fixing bolts (22) are in the shape of a double handle and a block head, and are provided with four groups. The two groups of handles respectively pass through the sliding holes (23) and the motor fixing plate (16) in sequence. The driving motor (17) is installed on the motor fixing plate (16). The two groups of handles respectively pass through the sliding holes (23), the driving roller shaft seat fixing plate ( 37), the two axial ends of the driving roller body (18) are provided with lifting plates (19), which are respectively installed below the motor fixing plate (16) and below the driving roller shaft seat fixing plate (37), the lifting plate (19) is provided with two threaded holes, and a tension adjustment screw (21) is also provided, the tension adjustment screw (21) is composed of two screws and a screw handle end pad, the handle pad is placed on the filtered air channel (14), the tension adjustment screw (21) is divided into two groups, one group of handles successively passes through the light hole of the motor fixing plate (16) and the threaded hole of the lifting plate (19), and the other group successively passes through the light hole of the driving roller shaft seat fixing plate (37) and the threaded hole on the lifting plate (19); The rotary roller support assembly comprises a rotary roller shaft seat (24) and an adjusting bolt (25). Two groups of slots (29) and a positioning clamp (36) are symmetrically provided at both ends of the return roller support plate (12). The positioning clamp (36) is fixed to the slot edge of the return roller support plate (12) by screws. The rotary roller shaft seat (24) is provided with grooves, which are divided into two groups and are respectively clamped in the two groups of slots (29). The adjusting bolt (25) is provided on the clamp. In the middle of the groove (29), the handle passes through the light hole of the positioning clamp (36) and then passes through the threaded hole on the rotary drum shaft seat (24). The joint between the head of the adjusting bolt (25) and the handle is positioned in the light hole of the positioning clamp (36). The adjusting bolt (25) is rotated to pull the rotary drum shaft seat (24) to move up and down in the clamping groove (29), thereby adjusting the distance between the rotary drum body (26) and the filtered air channel (14) to achieve tightness adjustment of the filter screen (15).

2. The filter circulating water washing type air purifier according to claim 1 is characterized in that: The mesh number of the filter (15) is 40 to 100 meshes.

3. The filter circulating water washing type air purifier according to claim 1 is characterized in that: The water tank (6) comprises a box body (30), a water inlet (31), a pipeline (32), a faucet (33) and a sewage outlet (34); the water inlet (31) is connected to the faucet (33) via the pipeline (32); the faucet (33) is built into the box body (30) and has a water level control function; the sewage outlet (34) is installed at the bottom of the box body (30).

4. The filter circulating water washing type air purifier according to claim 3 is characterized in that: The heights of the two ends of the bottom of the box body (30) are greater than the height of the middle part, and the sewage outlet (34) is installed in the middle part of the box body (30).

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