Filter capable of preventing filter holes from being blocked

Abstract

The invention discloses a filter capable of preventing filter holes from being blocked, and relates to the technical field of filters, the filter comprises a shell, the top of the shell is fixedly connected with an upper cover, the bottom of the shell is in threaded connection with a lower cover, the side face of the shell is communicated with an air outlet pipe, the upper cover is communicated with an air inlet pipe, the filter further comprises a screen, the screen is rotatably connected to the interior of the shell, and the air inlet pipe is communicated with the interior of the screen; a partition plate is fixedly connected between the outer side of the air duct and the bottom of the upper cover, and the partition plate extends into the screen. The screen and the air duct are arranged, and the filtering mechanism on the air duct is used for roughly filtering and drying air; through a net II connected with negative electricity and a screen connected with positive electricity, and through mesh blocking and electrostatic adsorption of the screen, the removal strength of particulate matters in the air is improved, and the filtering requirements of high-sand and high-dust air are met; and when the screen at the air outlet pipe is blocked by attached particles, the air flow passes through the air groove, the screen is driven to rotate through the self-adjusting mechanism, and the continuous filtering effect of the screen is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of filters, and particularly to a filter for preventing filter holes from being blocked. Background Art

[0002] A filter is a device that captures dust from a gas-solid two-phase flow through the action of a porous filtering material and purifies the gas. When in use, particulate matter in the air easily clogs the filter element of the filter, causing damage to the filter, requiring repair or even replacement, increasing the cost. In actual use, a pre-filtering device is usually set up to preliminarily filter the air and reduce the working burden of the filter. However, the filter element of the filter is still prone to clogging, affecting the continuous filtering effect.

[0003] In the prior art, a filter anti-clogging component is adopted. An air suction fan is used to suck the air filtering part, and then the dust flows into the dust collection seat. In this way, only the air filtering part is used for filtering, and the filtering ability is weak, unable to meet the rapid filtering requirements in a high-sand and high-dust environment. Moreover, an additional air suction fan needs to be set up, and the power of the air flow cannot be used for automatic cleaning, increasing the cost. An electric heating component is used to heat the filter material to prevent moisture in the air from affecting the filtering efficiency of the filter material. In this way, the moisture in the air cannot be removed during the filtering process, reducing the filtering effect on the air and unable to provide clean air for subsequent work. Summary of the Invention

[0004] The purpose of the present invention is to solve the problems in the prior art that only the air filtering part is used for filtering, the filtering ability is weak, unable to meet the rapid filtering requirements in a high-sand and high-dust environment, an additional air suction fan needs to be set up, the power of the air flow cannot be used for automatic cleaning, and the cost is increased. A filter for preventing filter holes from being blocked is proposed.

[0005] To achieve the above purpose, the present invention adopts the following technical scheme: A filter for preventing filter holes from being blocked, including a housing, the top of the housing is fixedly connected with an upper cover, the bottom is threadedly connected with a lower cover, and the side is communicated with an air outlet pipe. The upper cover is communicated with an air inlet pipe, and further includes: A screen, the screen is rotatably connected inside the housing, and the air inlet pipe is communicated with the inside of the screen; A wind cylinder, a partition is fixedly connected between the outer side of the wind cylinder and the bottom of the upper cover. The partition extends into the inside of the screen and is located between the air inlet pipe and the air outlet pipe. The wind cylinder communicates with both sides of the partition; A filtering mechanism, the filtering mechanism is connected inside the wind cylinder and is used for filtering large particulate matter and moisture in the air; Self-adjusting mechanism, the self-adjusting mechanism includes a second wind wheel. An air trough is formed between the outer side of the screen and the inner side of the housing. The air trough is located on one side of the air outlet pipe and is communicated with the air outlet pipe at the end. The second wind wheel is connected to the air trough, and rubber wheels are fixedly connected to both the top and the bottom, and the rubber wheels abut against the outer side of the screen.

[0006] In the above-mentioned filter for preventing filter holes from being blocked, both the housing and the screen are cylindrical, and they are arranged non-coaxially. Bearings II are installed between the top and the bottom of the screen and the housing, and rubber gaskets are fixedly connected in a sealed manner between the bearings II and the housing.

[0007] In the above-mentioned filter for preventing filter holes from being blocked, the filtering mechanism includes a first net and a second net fixedly connected to both ends of the air cylinder. The first net is close to the air inlet pipe, and the second net is close to the air outlet pipe. One end of the air cylinder away from the air inlet pipe faces the air outlet pipe, and the end of the air outlet pipe away from the housing is communicated with an external air pump; Two first wind wheels are rotatably connected inside the air cylinder. Both of the two first wind wheels are located between the first net and the second net. Connecting rings are fixedly connected to the opposite sides of the two first wind wheels. A plurality of storage boxes are rotatably connected between the two connecting rings, and silica gel desiccants are placed inside the storage boxes.

[0008] In the above-mentioned filter for preventing filter holes from being blocked, a bearing I is installed between the first wind wheel and the air cylinder; the center of gravity of the storage box is located below its rotation point, and an opening is provided at the top of the storage box.

[0009] In the above-mentioned filter for preventing filter holes from being blocked, the filtering mechanism further includes a dehydration component. The dehydration component includes a heating rod installed inside the air cylinder and a refrigerating sheet installed at the inner top of the air cylinder. A water outlet pipe is communicated with the bottom of the air cylinder, and the end of the water outlet pipe away from the air cylinder penetrates through the housing in a sealed manner and is communicated with a water collecting bag.

[0010] In the above-mentioned filter for preventing filter holes from being blocked, the inner side of the air cylinder is the inner wall, and the top is the upper top. The refrigerating sheet is installed on the upper top, and the edges of the upper top are all inclined downward and are smoothly connected to the inner wall.

[0011] In the above-mentioned filter for preventing filter holes from being blocked, a rotating groove is communicated with the inner side of the housing, and the rotating groove is communicated with the air trough. The second wind wheel is rotatably connected inside the rotating groove and partially extends into the air trough.

[0012] In the above-mentioned filter for preventing filter holes from being blocked, the second net is energized negatively through a wire, and an electric brush I is in electrical rotational contact with the side of the screen close to the air outlet pipe, and the electric brush I is energized positively through a wire.

[0013] In the above-mentioned filter for preventing filter holes from being blocked, a plurality of electric brushes II are in electrical rotational contact with the outer side of the screen, and the plurality of electric brushes II are distributed on the side of the air cylinder away from the air outlet pipe, and the electric brushes II are grounded through wires.

[0014] In the above filter for preventing filter holes from being blocked, the bottom of the housing is funnel-shaped, and a discharge port is provided at the bottom end, and the lower cover is threadedly connected to the outside of the discharge port.

[0015] Compared with the existing technology, the advantages of the present invention are as follows: 1. By setting a screen and a wind tube, the first screen in the wind tube coarsely filters the air to prevent large particulate matters from damaging subsequent components, ensuring the normal use of the equipment and the service life of the screen; the first wind wheel in the wind tube drives a plurality of storage boxes to rotate by using the power of the air flow, enabling the air to fully contact the silica gel desiccant in the storage boxes, absorbing the moisture in the air to ensure the dryness of the air; and making the particulate matters in the air carry negative charges through the second screen connected to the negative electrode, making part of the screen at the air outlet pipe carry positive charges through the first carbon brush, and improving the removal intensity of the particulate matters in the air through the blocking of the screen holes and electrostatic adsorption, meeting the filtration requirements of high-sand and high-dust air; and when the screen at the air outlet pipe is blocked due to the attachment of particulate matters, the air flow bypasses the wind groove, drives the screen to rotate through the self-adjusting mechanism, ensuring the continuous filtration effect of the screen, and at the same time forming a negative pressure suction effect on the screen rotating to the air inlet pipe, promoting the particulate matters to fall off the screen, ensuring the smoothness of the screen, increasing the service life of the screen, reducing the cleaning cycle of the staff for the screen, and reducing the cleaning burden of the staff.

[0016] 2. By setting a heating rod and a refrigeration sheet, when a plurality of storage boxes operate inside the wind tube, through the heating of the heating rod, the moisture adsorbed by the desiccant in the storage box is desorbed and evaporated, and is quickly condensed by the refrigeration sheet, flowing along the upper top and the inner wall into the water outlet pipe and collecting into the inside of the water collection bag, enabling the desiccant to be continuously used, maintaining the water absorption effect, and at the same time collecting water sources for backup in water-scarce environments such as deserts. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a working schematic diagram of a filter for preventing filter holes from being blocked proposed by the present invention; Figure 2 is a half-section axonometric drawing of a filter for preventing filter holes from being blocked proposed by the present invention Figure 1 ; Figure 3 is Figure 2 a partial enlarged view at X in Figure 4 is a half-section axonometric drawing of a filter for preventing filter holes from being blocked proposed by the present invention Figure 2 ; Figure 5 is Figure 4 a partial enlarged view at Y in Figure 6 is a partial-section axonometric drawing of a filter for preventing filter holes from being blocked proposed by the present invention; Figure 7 is a partial enlarged view at Z in 6.

[0018] In the figure: 1. Upper cover, 2. Housing, 3. Water collection bag, 4. Lower cover, 5. Sieve mesh, 11. Air inlet pipe, 12. Partition board, 13. Air duct, 14. Mesh one, 15. Mesh two, 16. Wind wheel one, 17. Bearing one, 18. Storage box, 19. Connecting ring, 110. Upper top, 111. Inner wall, 112. Heating rod, 113. Refrigeration sheet, 21. Air outlet pipe, 22. Discharge port, 23. Bearing two, 24. Rubber gasket, 25. Brush one, 26. Brush two, 27. Wind groove, 28. Wind wheel two, 29. Rubber wheel, 31. Water outlet pipe. Specific embodiments

[0019] The following embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention.

[0020] Refer to Figures 1-4 , a filter for preventing clogging of filter holes, comprising a housing 2, the top of the housing 2 is fixedly connected with an upper cover 1, the bottom is threadedly connected with a lower cover 4, the side is communicated with an air outlet pipe 21, the upper cover 1 is communicated with an air inlet pipe 11, and further comprising: A sieve mesh 5, the sieve mesh 5 is rotatably connected inside the housing 2, and the air inlet pipe 11 is communicated with the inside of the sieve mesh 5.

[0021] Both the housing 2 and the sieve mesh 5 are cylindrical, and the two are arranged non-coaxially. Bearings two 23 are installed between the top and bottom of the sieve mesh 5 and the housing 2, and a rubber gasket 24 is fixedly connected in a sealed manner between the bearing two 23 and the housing 2.

[0022] The rotation resistance of the sieve mesh 5 inside the housing 2 is reduced through the bearing two 23, which facilitates the rotation of the sieve mesh 5 when required in subsequent work and ensures the continuous filtering effect of the sieve mesh 5.

[0023] Sealing and insulation are ensured through the rubber gasket 24, preventing air from directly passing through the gap between the sieve mesh 5 and the housing 2, enabling the air entering the inside of the housing 2 to pass through the mesh holes of the sieve mesh 5, ensuring the filtering effect, and at the same time preventing the sieve mesh 5 from being electrified and causing the housing 2 to be electrified during subsequent work, avoiding the housing 2 from bringing harm to the safety of on-site personnel.

[0024] An air duct 13, a partition board 12 is fixedly connected between the outer side of the air duct 13 and the bottom of the upper cover 1. The partition board 12 extends into the inside of the sieve mesh 5 and is located between the air inlet pipe 11 and the air outlet pipe 21. The air duct 13 communicates the two sides of the partition board 12.

[0025] The inside of the sieve mesh 5 is generally divided into left and right parts through the partition board 12, guiding the air entering the inside of the housing 2 through the air inlet pipe 11 to pass through the partition board 12 through the air duct 13 on the partition board 12, facilitating the internal structure of the air duct 13 to process the air.

[0026] The filter mechanism is connected to the inside of the air cylinder 13 and is used to filter large particles and moisture in the air.

[0027] The filtering mechanism includes a net 14 and a net 2 15 fixedly connected at both ends of the air cylinder 13, the net 14 is close to the air inlet pipe 11, the net 2 15 is close to the air outlet pipe 21, the end of the air cylinder 13 away from the air inlet pipe 11 faces the air outlet pipe 21, and the end of the air outlet pipe 21 away from the shell 2 is connected to the external air pump.

[0028] The external air pump works to suck the air inside the screen 5 through the air outlet pipe 21 and the screen 5, so that the airflow quickly passes through the air inlet pipe 11 and the air cylinder 13, providing power for the movement of the subsequent structure.

[0029] Two wind wheels 16 are rotatably connected inside the wind tube 13, and the two wind wheels 16 are located between the net 14 and the net 2 15. A connecting ring 19 is fixedly connected to the opposite side of the two wind wheels 16, and a plurality of storage boxes 18 are rotatably connected between the two connecting rings 19, and silica gel desiccant is placed inside the storage boxes 18.

[0030] When the airflow passes through the wind tube 13 quickly, the airflow drives the wind wheel 16 to rotate, slowing down the flow rate of the airflow through the wind wheel 16, and causing the airflow to swirl inside the wind tube 13, so that the air fully contacts the silica gel desiccant inside the storage box 18, and fully removes moisture in the air.

[0031] A bearing 17 is installed between the wind wheel 16 and the wind tube 13; the center of gravity of the storage box 18 is located below its rotation point, and an opening is provided on the top of the storage box 18.

[0032] Since the center of gravity of the material storage box 18 is located below the rotation point thereof, the material storage box 18 always maintains an upward opening during the movement of the connecting ring 19, so that the moisture in the silica gel desiccant can be evaporated and overflowed by the subsequent structure.

[0033] Reference Figure 5 The filtering mechanism also includes a dehydration component, which includes a heating rod 112 installed inside the wind tube 13 and a cooling plate 113 installed on the top of the wind tube 13. The bottom of the wind tube 13 is connected to a water outlet pipe 31, and one end of the water outlet pipe 31 away from the wind tube 13 is sealed and passes through the shell 2, and is connected to a water collection bag 3.

[0034] The heating rod 112 and the cooling plate 113 both adopt the existing technology. The heating rod 112 heats the inside of the air duct 13, so that the silica gel desiccant near the heating rod 112 is separated from the water under the action of high temperature, and condensed into small water droplets in the cold zone formed by the cooling plate 113, and finally flows down along the inner side of the air duct 13, and is collected by the outlet pipe 31 and the water collection bag 3, so as to facilitate the reuse of water.

[0035] The inner side of the air duct 13 is the inner wall 111, and the top is the upper top 110. The refrigeration sheet 113 is installed on the upper top 110. The edges of the upper top 110 are all inclined downward and are smoothly connected to the inner wall 111.

[0036] Through the upper top 110 and the inner wall 111, it is beneficial for the condensed small water droplets to slide down along the two, improving the collection effect of the small water droplets.

[0037] Refer to Figure 6 and Figure 7 , the self-adjusting mechanism. The self-adjusting mechanism includes the second wind wheel 28. The outer side of the screen 5 and the inner side of the housing 2 enclose an air duct 27. The air duct 27 is located on one side of the air outlet pipe 21 and the end is communicated with the air outlet pipe 21. The second wind wheel 28 is connected to the air duct 27, and rubber wheels 29 are fixedly connected to both the top and the bottom. The rubber wheels 29 abut against the outer side of the screen 5.

[0038] A rotating groove is communicated with the inner side of the housing 2. The rotating groove is communicated with the air duct 27. The second wind wheel 28 is rotatably connected inside the rotating groove and part of it extends into the air duct 27.

[0039] The rotating shaft of the second wind wheel 28 is located inside the rotating groove. When part of the air flow passing through the air duct 27 blows towards the second wind wheel 28, the second wind wheel 28 rotates accordingly, thereby driving the screen 5 to rotate through the rubber wheels 29, maintaining the high-efficiency filtering effect of the screen 5.

[0040] The second screen 15 is energized negatively through an electric wire. One side of the screen 5 close to the air outlet pipe 21 is in electrical rotating contact with a first carbon brush 25. The first carbon brush 25 is energized positively through an electric wire.

[0041] Through the negatively charged second screen 15 and the positively charged part of the screen 5, an electrostatic dust removal effect is formed on the passing air, improving the removal intensity of the screen 5 for particulate matter in the air and meeting the filtering requirements of high sand and high dust.

[0042] The outer side of the screen 5 is in electrical rotating contact with a plurality of second carbon brushes 26. The plurality of second carbon brushes 26 are distributed on the side of the air duct 13 away from the air outlet pipe 21. The second carbon brushes 26 are grounded through electric wires.

[0043] The bottom of the housing 2 is funnel-shaped and a discharge port 22 is opened at the bottom end. The lower cover 4 is threadedly connected to the outside of the discharge port 22.

[0044] The present invention is applied to the pre-filtering work of industrial air pumps in high-sand and high-dust environments such as deserts. When in use, the upper cover 1 and the housing 2 are fixed together by bolts, and the lower cover 4 is connected to the housing 2 by threads.

[0045] The air outlet pipe 21 is connected to an external air pump. When the air pump works, the clean air inside the housing 2 is sucked negatively through the air outlet pipe 21, and the screen 5 performs the air filtering work.

[0046] The partition plate 12 is welded to the bottom of the upper cover 1 and divides the inside of the screen 5 into left and right parts. The outside air sequentially passes through the air inlet pipe 11, the left half part inside the screen 5, the air cylinder 13, and the right half part inside the screen 5, is filtered by the screen 5, and finally discharged from the air outlet pipe 21.

[0047] When the air passes through the air cylinder 13, a net one 14 and a net two 15 are respectively welded to both ends of the air cylinder 13. The air sequentially passes through the net one 14, the inside of the air cylinder 13, and the net two 15. The net one 14 first blocks large particles such as small stones in the air to prevent large particles from jamming or damaging subsequent components and the screen 5, and ensure the normal service life of this filter.

[0048] On both sides of the air cylinder 13, a wind wheel one 16 is installed through a bearing one 17 respectively. When the air enters the inside of the air cylinder 13, the air flow pushes the wind wheel one 16 to rotate continuously.

[0049] The rotation of the wind wheel one 16 makes the air flow entering the air cylinder 13 swirl, increases the residence time of the air inside the air cylinder 13, and ensures the contact time between the air and the desiccant. At the same time, it drives the storage box 18 to rotate through the connecting ring 19. The storage box 18 contains silica gel desiccant. The storage box 18 is rotationally connected to the connecting ring 19 and always keeps the top of the box facing upward under the action of gravity. The air entering the air cylinder 13 contacts the silica gel desiccant in the storage box 18 and the moisture is absorbed.

[0050] As the wind wheel one 16 rotates, multiple storage boxes 18 rotate reciprocally. When the storage box 18 reaches the heating rod 112, affected by heating, the moisture in the silica gel desiccant desorbs and evaporates and floats upward. When the water vapor contacts the refrigerating sheet 113 located at the upper top 110, it is instantly condensed into water droplets, and slides down along the upper top 110 and the inner wall 111 until it enters the inside of the water outlet pipe 31 and collects inside the water collecting bag 3, so that the desiccant can be used continuously, maintain the water absorption effect, and obtain a certain amount of water.

[0051] A negative charge is applied to the net two 15, so that when the dry air passes through the net two 15, the particulate matter in the air carries a negative charge. A positive charge is supplied to the side of the screen 5 close to the air outlet pipe 21 through a brush one 25. When the air passing through the net two 15 passes through the screen 5 and enters the air outlet pipe 21, the particulate matter such as dust carrying a negative charge is tightly combined with the screen 5 under the blockage and electrostatic adsorption of the mesh holes of the screen 5, improving the removal intensity of the particulate matter in the air and meeting the filtration requirements of high-sand and high-dust air.

[0052] When too much particulate matter adheres to the part of the screen 5 close to the air outlet pipe 21, the resistance of the screen 5 increases, and the air flow cannot easily pass through. The air flow can only bypass and enter the inside of the air outlet pipe 21 from the air groove 27. When the air flow passes through the air groove 27, it pushes the wind wheel two 28 to rotate. Rubber wheels 29 are provided at the upper and lower ends of the wind wheel two 28. The rotation of the wind wheel two 28 makes the rubber wheels 29 drive the corresponding rotation of the screen 5.

[0053] When the screen 5 rotates by a certain angle, the part of the screen 5 blocked by particulate matter moves away from the air outlet pipe 21, the resistance of the screen 5 weakens, and the air flow can directly pass through the screen 5 and enter the air outlet pipe 21 again, and the screen 5 stops rotating.

[0054] A second grounding brush 26 is provided on the side of the screen 5 away from the air outlet pipe 21 to further ensure that the housing 2 is not charged.

[0055] When the part of the screen 5 carrying particulate matter rotates to the position of the second brush 26, the screen 5 and the particulate matter are no longer charged, the bonding strength between the particulate matter and the screen 5 is weakened, and some particulate matter falls to the bottom of the housing 2. At the same time, when the air enters the inside of the air duct 13 through the air inlet pipe 11, the air inside the air groove 27 and near the screen 5 is sucked accordingly, forming an air flow backwashing effect on the screen 5, further promoting the particulate matter to fall from the screen 5, ensuring the smoothness of the screen 5, increasing the service life of the screen 5, reducing the cleaning cycle of the staff for the screen 5, and reducing the cleaning burden of the staff.

[0056] The particulate matter falling to the bottom of the housing 2 is collected at the discharge port 22 along its funnel-shaped structure. The maintenance personnel can regularly unscrew the lower cover 4 to quickly discharge the collected dust and clean the dirt.

[0057] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A filter for preventing filter holes from being blocked, comprising a housing (2), wherein an upper cover (1) is fixedly connected to the top of the housing (2), a lower cover (4) is threadedly connected to the bottom, an air outlet pipe (21) is communicated with the side surface, and an air inlet pipe (11) is communicated with the upper cover (1), and is characterized in that, It further includes: A sieve mesh (5), the sieve mesh (5) is rotatably connected inside the housing (2), and the air inlet pipe (11) communicates with the inside of the sieve mesh (5); An air duct (13), a partition (12) is fixedly connected between the outer side of the air duct (13) and the bottom of the upper cover (1), the partition (12) extends into the inside of the sieve mesh (5), and is located between the air inlet pipe (11) and the air outlet pipe (21), and the air duct (13) communicates with both sides of the partition (12); A filtering mechanism, the filtering mechanism is connected inside the air duct (13) and is used for filtering large particles and moisture in the air; A self-adjusting mechanism, the self-adjusting mechanism includes a second air wheel (28), an air groove (27) is formed between the outer side of the sieve mesh (5) and the inner side of the housing (2), the air groove (27) is located on one side of the air outlet pipe (21), and the end is communicated with the air outlet pipe (21), the second air wheel (28) is connected to the air groove (27), and rubber wheels (29) are fixedly connected to both the top and the bottom, and the rubber wheels (29) abut against the outer side of the sieve mesh (5).

2. The filter for preventing clogging of filter holes according to claim 1, characterized in that, Both the housing (2) and the sieve mesh (5) are cylindrical, and they are arranged non-coaxially. Bearing two (23) is installed between the top and bottom of the sieve mesh (5) and the housing (2), and a rubber pad (24) is fixedly connected in a sealed manner between the bearing two (23) and the housing (2).

3. The filter for preventing clogging of filter holes according to claim 1, wherein, The filtering mechanism includes a first net (14) and a second net (15) fixedly connected to both ends of the air duct (13), the first net (14) is close to the air inlet pipe (11), the second net (15) is close to the air outlet pipe (21), one end of the air duct (13) away from the air inlet pipe (11) faces the air outlet pipe (21), and one end of the air outlet pipe (21) away from the housing (2) is communicated with an external air pump; Two first air wheels (16) are rotatably connected inside the air duct (13), both of the two first air wheels (16) are located between the first net (14) and the second net (15), connecting rings (19) are fixedly connected to the opposite sides of the two first air wheels (16), and a plurality of storage boxes (18) are rotatably connected between the two connecting rings (19), and silica gel desiccant is placed inside the storage boxes (18).

4. The filter for preventing clogging of filter holes according to claim 3, wherein A bearing one (17) is installed between the first air wheel (16) and the air duct (13); the center of gravity of the storage box (18) is located below its rotation point, and an opening is provided at the top of the storage box (18).

5. The filter for preventing clogging of filter holes according to claim 3, characterized in that, The filtering mechanism further includes a dehydration component, the dehydration component includes a heating rod (112) installed inside the air duct (13) and a refrigeration sheet (113) installed on the inner top of the air duct (13), a water outlet pipe (31) is communicated with the bottom of the air duct (13), and one end of the water outlet pipe (31) away from the air duct (13) penetrates through the housing (2) in a sealed manner and is communicated with a water collecting bag (3).

6. The filter for preventing clogging of filter holes according to claim 5, characterized in that, The inner side of the air duct (13) is the inner wall (111), and the top is the upper top (110). The refrigeration sheet (113) is installed on the upper top (110), and the edges of the upper top (110) are all inclined downward and are smoothly connected to the inner wall (111).

7. The filter for preventing clogging of filter holes according to claim 1, wherein, A rotating groove is communicated with the inside of the housing (2), the rotating groove is communicated with the air groove (27), the second air wheel (28) is rotatably connected inside the rotating groove, and part of it extends into the air groove (27).

8. The filter for preventing clogging of filter holes according to claim 3, characterized in that, The second net (15) is energized negatively through an electric wire. One side of the sieve (5) close to the air outlet pipe (21) is in electrical rotational contact with a first brush (25), and the first brush (25) is energized positively through an electric wire.

9. The filter for preventing clogging of filter holes according to claim 8, characterized in that, There are multiple second brushes (26) in electrical rotational contact on the outer side of the sieve (5). The multiple second brushes (26) are distributed on one side of the air duct (13) away from the air outlet pipe (21), and the second brushes (26) are grounded through electric wires.

10. The filter for preventing clogging of filter holes according to claim 1, characterized in that, The bottom of the housing (2) is funnel-shaped, and a discharge port (22) is opened at the bottom end. The lower cover (4) is threadedly connected to the outside of the discharge port (22).

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