Layered high-efficiency air filter

Abstract

The invention relates to the field of filters, in particular to a hierarchical efficient air filter which comprises a shell, mounting supports, a first filter part, a collecting part and a second filter part, the mounting supports are fixed to the shell, the first filter part comprises a filter screen, the filter screen is mounted in the shell, and the filter screen can filter part of particulate impurities in gas. The collecting part is used for removing and collecting impurities adhered to the outer surface of a filter screen, the second filtering part comprises a mixing box, gas filtered for the first time is transferred into the mixing box, and liquid is contained in the mixing box, so that two layers of filtering of gas filter screen filtering and liquid filtering are realized, the impurities in the gas are more thoroughly removed, and the filtering efficiency is improved. The filtering effect is better.

Description

Technical Field

[0001] The present invention relates to the field of filters, and particularly to a hierarchical high-efficiency air filter. Background Art

[0002] An air filter is a device that captures dust from a gas-solid two-phase flow through the action of a porous filter material and purifies the gas. It purifies the air with a low dust content and sends it into a room to meet the process requirements of a clean room and the air cleanliness in a general air-conditioned room.

[0003] The main requirements of an air filter are high filtration efficiency, good filtration effect, and the ability to be continuously used for a long time. At present, the existing air filters use a structural method of fixing the filter material for air filtration. As the use time increases, the filter material reduces the air filtration efficiency, and the filter material needs to be replaced regularly, which is cumbersome to operate. In addition, the existing air filters only use a solid-gas separation method to filter out large particle suspensions in the air, and cannot effectively filter and remove small particle suspensions smaller than the pore size of the filter material and odors mixed in the air, resulting in poor use effects of the air filter. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a hierarchical high-efficiency air filter, which solves the problems of low filtration efficiency and frequent replacement of the filter material of the existing air filter by timely removing impurities, and solves the technical problem of poor filtration effect of the existing air filter by the liquid-phase filtration method.

[0005] A hierarchical high-efficiency air filter of the present invention includes a housing, a mounting bracket, a first filtration part, a collection part, and a second filtration part.

[0006] A plurality of the mounting brackets are fixed on the housing, the first filtration part is installed inside the housing, multiple groups of the collection parts are evenly installed on the outer circumference of the housing, and the second filtration part is installed at the bottom of the housing.

[0007] The first filtration part includes a filter screen, the filter screen is installed inside the housing, and the filter screen can filter out some particulate impurities in the gas.

[0008] The collection part removes and collects the impurities adhered to the outer surface of the filter screen.

[0009] The second filtration part includes a mixing box, the gas after the first filtration is transferred into the mixing box, and a liquid is contained in the mixing box.

[0010] A hierarchical high-efficiency air filter of the present invention, wherein the first filtering part further includes a first motor, a first gear, a second gear, a first rotating shaft, a second gear, a synchronous belt, a support ring, a sealing plate, a first channel, a turbine, a second motor, an exhaust duct, and an air inlet channel;

[0011] The mounting bracket is fixedly connected to the first motor, the output shaft of the first motor is coaxially fixed to the first gear, the first gear meshes with the second gear, the second gear is coaxially fixed to one end of the first rotating shaft, the first rotating shaft is installed on the outer shell through a bearing, the other end of the first rotating shaft is coaxially fixed to the second gear, the second gear is coaxially fixed to the support ring, both ends of the support ring are rotatably and sealingly connected to the sealing plate, the side surface of the sealing plate is sealingly lapped with the inner surface of the filter screen, and the sealing plate is fixedly connected to the mounting bracket;

[0012] The structure composed of the second gear, the first rotating shaft, the second gear, and the support ring is symmetrically distributed in multiple groups about the axis center of the first gear, and multiple second gears are connected by synchronous belt drive through the synchronous belt. The synchronous belt is fixedly connected to one end of the filter screen, the inner surface of the filter screen is lapped with the outer surfaces of multiple support rings respectively, and the structure composed of the second gear and the synchronous belt is symmetrically distributed in two groups about the center of the filter screen up and down;

[0013] The outer surface of the filter screen faces the air inlet channel. The air inlet channel is opened on the outer shell, and the collection part is installed at the outer surface of the filter screen at the position lapped with the support ring;

[0014] The sealing plate installed at the bottom of the filter screen is fixedly connected and communicated with one end of the first channel. A turbine rotating along its axis is arranged in the first channel. The turbine is coaxially fixed to the output shaft of the second motor, the second motor is fixedly connected to the outer surface of the outer shell, the other end of the first channel is connected and communicated with one end of the exhaust duct, the exhaust duct is fixedly connected to the outer shell, and the other end of the exhaust duct is communicated with the outside.

[0015] A hierarchical high-efficiency air filter of the present invention, wherein the collection part includes a collection box, a guide groove, through holes, an exhaust fan, and a handle;

[0016] The outer surface of the filter screen at the lap joint with the support ring faces the air inlet of the collection box and is sealingly lapped with the side surface of the air inlet. The collection box is arranged in the guide groove and moves along it. The guide groove is opened on the outer shell. Multiple through holes are uniformly opened along the height direction on one side of the collection box away from the support ring. The through holes face the exhaust fan. The exhaust fan is fixedly connected to the outer shell. The top of the collection box is fixedly connected to the handle.

[0017] A hierarchical high-efficiency air filter of the present invention, wherein

[0018] The second filtering part further includes an annular channel, a shunt chamber, shunt pipes, air holes, a first water pump, a second water pump, a water distribution tank, and a batching port;

[0019] The other end of the first channel is hermetically and fixedly connected and communicated with one end of the annular channel. The other end of the annular channel is coaxially fixed and communicated with the middle of the shunt chamber. The upper surface of the annular channel is fixedly connected and communicated with one ends of a plurality of the shunt pipes along the circumferential direction. A plurality of the air holes are evenly formed in the side surface of the shunt pipe. The shunt pipe is arranged at the bottom of the mixing tank. One side of the top of the mixing tank is fixedly connected and communicated with one ends of a plurality of exhaust pipes. The mixing tank is coaxially arranged with the annular channel;

[0020] The bottom of the mixing tank is fixedly connected and communicated with the water inlet of the first water pump. The water outlet of the first water pump is fixedly connected and communicated with the top of the water distribution tank. The bottom of the water distribution tank is fixedly connected and communicated with the water inlet of the second water pump. The water outlet of the second water pump is fixedly connected and communicated with the top of the mixing tank. The water distribution tank is fixedly connected and communicated with one end of the batching port. The other end of the batching port is communicated with the outside.

[0021] A hierarchical high-efficiency air filter of the present invention, wherein the structure composed of the second gear, the first rotating shaft, the second gear, and the support ring is symmetrically distributed in 3 groups about the axis center of the first gear, and the number of the air inlet channels is equal to the number of the above structures.

[0022] A hierarchical high-efficiency air filter of the present invention, wherein the number of the air inlet channels is equal to the number of the collection parts, and the two are arranged at intervals.

[0023] A hierarchical high-efficiency air filter of the present invention, wherein the support ring is a hollow cylindrical structure, and a plurality of through holes are evenly formed in the side wall of the support ring along the circumferential direction.

[0024] The differences between a hierarchical high-efficiency air filter of the present invention and the prior art are as follows: 1. The hierarchical high-efficiency air filter of the present invention adopts a combination of filter screen filtration and liquid-phase filtration to achieve two-stage filtration of gas. It can not only filter out large particulate suspensions in the gas, but also remove small particulate matters or odors in the gas, making the gas filtration effect better; 2. In the present invention, the filter screen rotates cyclically, so that each position of the filter screen is evenly and fully utilized, and impurities on the outer surface of the filter screen are removed during the rotation of the filter screen, ensuring the filtration efficiency of the filter screen; 3. After the impurities on the outer surface of the filter screen are removed and collected, it is convenient for replacement and operation, reducing the steps and operation difficulty of filter screen cleaning and improving work efficiency.

[0025] The following further describes a hierarchical high-efficiency air filter of the present invention with reference to the accompanying drawings. Description of the Drawings

[0026] Figure 1 is the orthographic isometric view of a hierarchical high-efficiency air filter;

[0027] Figure 2 is Figure 1 the front view of the hierarchical high-efficiency air filter shown;

[0028] Figure 3 is the cross-sectional view along the A-A line in Figure 2 ;

[0029] Figure 4 is the cross-sectional view along the B-B line in Figure 2 ;

[0030] Figure 5 is Figure 1 the disassembly and cutting view of some components in

[0031] Figure 6 is Figure 2 the cutting front view of some parts in

[0032] Description of the Reference Numerals:

[0033] 101. Outer shell; 102. Mounting bracket; 200. First filtration section; 201. First motor; 202. First gear; 203. Second gear; 204. First rotating shaft; 205. Second gear; 206. Timing belt; 207. Filter screen; 208. Support ring; 209. Sealing plate; 210. First channel; 211. Turbine; 212. Second motor; 213. Exhaust duct; 214. Air inlet channel; 300. Collection section; 301. Collection box; 302. Guide groove; 303. Through hole; 304. Exhaust fan; 305. Handle; 400. Second filtration section; 401. Annular channel; 402. Diverging chamber; 403. Diverging pipe; 404. Air hole; 405. Mixing tank; 406. First water pump; 407. Second water pump; 408. Water distribution tank; 409. Batching port. Detailed implementation manners

[0034] As Figures 1 to 6 shown, a hierarchical high-efficiency air filter of the present invention includes an outer shell 101, a mounting bracket 102, a first filtration section 200, a collection section 300, and a second filtration section 400.

[0035] A plurality of the mounting brackets 102 are fixed on the outer shell 101. The first filtration section 200 is installed inside the outer shell 101. A plurality of groups of the collection sections 300 are uniformly installed on the outer side of the outer shell 101 in the circumferential direction. The second filtration section 400 is installed at the bottom of the outer shell 101.

[0036] The first filtration section 200 includes a filter screen 207. The filter screen 207 is installed inside the outer shell 101, and the filter screen 207 can filter some particulate impurities in the gas.

[0037] The collection section 300 removes and collects the impurities adhering to the outer surface of the filter screen 207.

[0038] The second filtration section 400 includes a mixing tank 405. The gas after the first filtration is transferred into the mixing tank 405, and a liquid is contained in the mixing tank 405.

[0039] In the present invention, the first filtering part 200 first sucks the external gas into the interior of the housing 101. During this process, the external gas passes through the filter screen 207 to complete the first filtration. The filter screen 207 blocks the impurities in the gas on the outer surface of the filter screen 207. The collecting part 300 removes and collects the impurities on the outer surface of the filter screen 207. The gas after the first filtration is transferred by the second filtering part 400 into the mixing tank 405 and mixed with the liquid in the mixing tank 405, so that the small particulate impurities in the gas remain in the mixing tank 405 to complete the second filtration. Through the above structure, two levels of filtration, namely gas filter screen filtration and liquid filtration, are realized, so that the impurities in the gas are removed more thoroughly and the filtration effect is better. In addition, the collecting part 300 timely removes and collects the impurities on the outer surface of the filter screen 207 to prevent the impurities from blocking the filter holes of the filter screen 207, making the gas filtration efficiency higher.

[0040] Among them, multiple groups of the collecting parts 300 are evenly distributed along the circumferential direction of the housing 101, and the number of groups can be 3 groups, 4 groups, 5 groups, 6 groups, 7 groups, 8 groups or multiple groups, preferably 3 groups.

[0041] As a further explanation of the present invention, refer to Figure 1 、 2 、3、5;

[0042] The first filtering part 200 further includes a first motor 201, a first gear 202, a second gear 203, a first rotating shaft 204, a second gear 205, a synchronous belt 206, a support ring 208, a sealing plate 209, a first channel 210, a turbine 211, a second motor 212, an exhaust duct 213, and an air inlet channel 214;

[0043] The mounting bracket 102 is fixedly connected to the first motor 201. The output shaft of the first motor 201 is coaxially fixed to the first gear 202. The first gear 202 meshes with the second gear 203. The second gear 203 is coaxially fixed to one end of the first rotating shaft 204. The first rotating shaft 204 is installed on the housing 101 through a bearing. The other end of the first rotating shaft 204 is coaxially fixed to the second gear 205. The second gear 205 is coaxially fixed to the support ring 208. Both ends of the support ring 208 are rotatably and sealingly connected to the sealing plate 209. The side surface of the sealing plate 209 is sealingly lapped with the inner surface of the filter screen 207. The sealing plate 209 is fixedly connected to the mounting bracket 102;

[0044] A plurality of structures composed of the second gear 203, the first rotating shaft 204, the second gear 205, and the support ring 208 are symmetrically distributed in multiple groups about the axis center of the first gear 202. And a plurality of the second gears 205 are connected by synchronous belt drive through the synchronous belt 206. One end of the synchronous belt 206 is fixedly connected to the filter screen 207. The inner surface of the filter screen 207 is respectively lapped with the outer surfaces of a plurality of the support rings 208. A structure composed of the second gear 205 and the synchronous belt 206 is symmetrically distributed in two groups about the center of the filter screen 207 up and down;

[0045] The outer surface of the filter screen 207 faces the air inlet passage 214. The air inlet passage 214 is opened on the housing 101. The collection part 300 is installed at the outer surface of the filter screen 207 at the position lapped with the support ring 208;

[0046] The sealing plate 209 installed at the bottom of the filter screen 207 is fixedly connected and communicated with one end of the first passage 210. A turbine 211 rotating along its axis is arranged in the first passage 210. The turbine 211 is coaxially fixed to the output shaft of the second motor 212. The second motor 212 is fixedly connected to the outer surface of the housing 101. The other end of the first passage 210 is connected and communicated with one end of the exhaust duct 213. The exhaust duct 213 is fixedly connected to the housing 101. The other end of the exhaust duct 213 is communicated with the outside.

[0047] In the present invention, when it is necessary to filter the gas, the second motor 212 is started. At this time, the output shaft of the second motor 212 drives the turbine 211 to rotate synchronously, so that a negative pressure is formed inside the closed space surrounded by the filter screen 207 and the sealing plate 209, thereby sucking the outside air into the housing 101 through the air inlet passage 214, and completing the first filtration through the filter screen 207 during this process. At the same time, the first motor 201 drives a plurality of the second gears 203 to rotate in the same direction through the first gear 202, and drives the synchronous belt 206 and the filter screen 207 to rotate unidirectionally through the first rotating shaft 204 and the second gear 205, so that each position of the filter screen 207 faces the air inlet passage 214 in turn, ensuring that each position of the filter screen 207 can complete the filtration of the gas, making the use of the filter screen 207 more uniform. And when each position of the filter screen 207 passes through the support ring 208, the outer surface of the filter screen 207 is cleaned by the collection part 300. Therefore, through the above structure, it is ensured that during the rotation of the filter screen 207, the filter holes of the filter screen 207 always remain unobstructed, increasing the efficiency of gas filtration.

[0048] Among them, a plurality of the exhaust air ducts 213 are evenly distributed along the circumferential direction of the outer shell 101, and the number can be 4, 5, 6, 7, 8, 9 or more, preferably 6.

[0049] As a further explanation of the present invention, refer to Figure 1 , 4 ;

[0050] The collection part 300 includes a collection box 301, a guide groove 302, through holes 303, an exhaust fan 304, and a handle 305;

[0051] The outer surface of the filter screen 207 at the lap joint with the support ring 208 faces the air inlet of the collection box 301 and is hermetically lapped with the side surface of the air inlet. The collection box 301 is arranged in the guide groove 302 and moves along it. The guide groove 302 is opened on the outer shell 101. A plurality of the through holes 303 are evenly opened on one side of the collection box 301 away from the support ring 208 along its height direction. The through holes 303 face the exhaust fan 304. The exhaust fan 304 is fixedly connected to the outer shell 101. The top of the collection box 301 is fixedly connected to the handle 305.

[0052] In the present invention, an operator starts the exhaust fan 304 according to requirements. When the exhaust fan 304 is in the on state, the exhaust fan 304 discharges the gas in the collection box 301 to the outside through the through holes 303, thereby forming a negative pressure in the collection box 301, so that the gas inside the outer shell 101 passes through the filter screen 207 and enters the collection box 301. In this process, the impurities on the outer surface of the filter screen 207 are brought into the collection box 301 by the gas to complete the cleaning and collection. And with the rotation of the filter screen 207, the cleaning of impurities at each position on the outer surface of the filter screen 207 is completed, ensuring the filtering efficiency of the filter screen 207. And the sliding configuration relationship between the collection box 301 and the guide groove 302 facilitates the replacement of the collection box 301.

[0053] Among them, the number of the through holes 303 is equal to that of the exhaust fan 304, and the number is preferably 2. The purpose of the present invention is to start a plurality of the exhaust fans 304 simultaneously to facilitate the cleaning and collection of impurities on the outer surface of the filter screen 207.

[0054] Among them, the installation, driving and control methods of the exhaust fan 304 are prior arts and will not be elaborated here.

[0055] As a further explanation of the present invention, refer to Figure 3 , 6 ;

[0056] The second filtering part 400 further includes an annular channel 401, a shunt chamber 402, shunt pipes 403, air holes 404, a first water pump 406, a second water pump 407, a water distribution tank 408, and a batching port 409;

[0057] The other end of the first channel 210 is hermetically and fixedly connected and communicated with one end of the annular channel 401. The other end of the annular channel 401 is coaxially fixed and communicated with the middle of the shunt chamber 402. The upper surface of the annular channel 401 is fixedly connected and communicated with one end of a plurality of the shunt pipes 403 along the circumference. A plurality of the air holes 404 are evenly formed in the side surface of the shunt pipe 403. The shunt pipe 403 is arranged at the bottom of the mixing tank 405. One end of the side surface of the top of the mixing tank 405 is fixedly connected and communicated with one end of a plurality of the exhaust pipes 213. The mixing tank 405 is coaxially arranged with the annular channel 401;

[0058] The bottom of the mixing tank 405 is fixedly connected and communicated with the water inlet of the first water pump 406. The water outlet of the first water pump 406 is fixedly connected and communicated with the top of the water distribution tank 408. The bottom of the water distribution tank 408 is fixedly connected and communicated with the water inlet of the second water pump 407. The water outlet of the second water pump 407 is fixedly connected and communicated with the top of the mixing tank 405. The water distribution tank 408 is fixedly connected and communicated with one end of the batching port 409. The other end of the batching port 409 is communicated with the outside.

[0059] During the rotation of the turbine 211 in the present invention, the gas inside the housing 101 is transmitted into the shunt chamber 402 through the first channel 210 and the annular channel 401, and the gas in the shunt chamber 402 is evenly arranged at the bottom of the mixing tank 405 through a plurality of the shunt pipes 403 and the air holes 404, so that the gas is fully mixed with the liquid in the mixing tank 405, ensuring that the impurities in the gas are settled by the liquid in the mixing tank 405, completing the secondary filtration of the gas. The filtered gas is discharged to the outside through the exhaust pipes 213. The liquid in the mixing tank 405 is circulated through the first water pump 406, the second water pump 407, and the water distribution tank 408. First, the liquid at the bottom of the mixing tank 405 is transferred to the top of the water distribution tank 408 through the first water pump 406, and then after surrounding the water distribution tank 408 for one week, it is transferred to the top of the mixing tank 405 from the bottom of the water distribution tank 408 through the second water pump 407. Through the above method, the sediment in the mixing tank 405 is better transferred to the water distribution tank 408, and operations such as liquid supplement or cleaning are completed through the batching port 409. In addition, through the circulation of the liquid, the purification effect on the gas in the secondary filtration is more thorough.

[0060] Among them, the installation, driving, and control methods of the first water pump 406 and the second water pump 407 are prior arts and will not be elaborated here.

[0061] Among them, the liquid in the mixing tank 405 can be water or a cleaning liquid mixed with aromatic hydrocarbons, aiming to enhance the purification effect of the gas.

[0062] As a further explanation of the present invention, refer to Figures 1 to 6 ;

[0063] The structure composed of the second gear 203, the first rotating shaft 204, the second gear 205, and the support ring 208 is symmetrically distributed in 3 groups about the axis of the first gear 202, and the number of the air inlet channels 214 is equal to the number of the above structures.

[0064] The number of the air inlet channels 214 is equal to the number of the collection part 300, and they are arranged at intervals.

[0065] The purpose of the present invention is that when the gas passes through the air inlet channel 214, passes through the filter screen 207, and enters the interior of the housing 101, as the filter screen 207 rotates, the collection part 300 can timely remove the impurities outside the filter screen 207 to ensure the smoothness of the filter holes of the filter screen 207.

[0066] The support ring 208 is a hollow cylindrical structure, and a plurality of through holes are evenly arranged along the circumferential direction on the side wall of the support ring 208.

[0067] The purpose of the present invention is that the gas inside the housing 101 can conveniently flow through the support ring 208 and the filter screen 207 into the collection box 301, so that the collection part 300 can smoothly remove and collect the impurities on the outer surface of the filter screen 207.

[0068] The above-described embodiments are only descriptions of the preferred embodiments of the present invention, and do not limit the scope of the present invention. Without departing from the design spirit of the present invention, various deformations and improvements made by those of ordinary skill in the art to the technical solutions of the present invention shall fall within the protection scope determined by the claims of the present invention.

Claims

1. A hierarchical high-efficiency air filter, comprising a housing (101), a mounting bracket (102), a first filtering part (200), a collection part (300), and a second filtering part (400), characterized in that: A plurality of the mounting brackets (102) are fixed on the housing (101), the first filtering part (200) is installed inside the housing (101), multiple groups of the collection parts (300) are evenly installed on the outer side of the housing (101) along the circumference, and the second filtering part (400) is installed at the bottom of the housing (101); The first filtering part (200) includes a filter screen (207), the filter screen (207) is installed inside the housing (101), and the filter screen (207) can filter some particulate impurities in the gas; The collection part (300) removes and collects the impurities adhering to the outer surface of the filter screen (207); The second filtering part (400) includes a mixing box (405), the gas after the first filtration is transferred into the mixing box (405), and a liquid is contained in the mixing box (405).

2. The hierarchical high-efficiency air filter according to claim 1, characterized in that: The first filtering part (200) further includes a first motor (201), a first gear (202), a second gear (203), a first rotating shaft (204), a second gear (205), a synchronous belt (206), a support ring (208), a sealing plate (209), a first channel (210), a turbine (211), a second motor (212), an exhaust duct (213), and an air inlet channel (214); The mounting bracket (102) is fixedly connected to the first motor (201), the output shaft of the first motor (201) is coaxially fixed to the first gear (202), the first gear (202) meshes with the second gear (203), the second gear (203) is coaxially fixed to one end of the first rotating shaft (204), the first rotating shaft (204) is installed on the housing (101) through a bearing, the other end of the first rotating shaft (204) is coaxially fixed to the second gear (205), the second gear (205) is coaxially fixed to the support ring (208), both ends of the support ring (208) are rotatably and sealingly connected to the sealing plate (209), the side surface of the sealing plate (209) is sealingly lapped with the inner surface of the filter screen (207), and the sealing plate (209) is fixedly connected to the mounting bracket (102); The structure composed of the second gear (203), the first rotating shaft (204), the second gear (205), and the support ring (208) is symmetrically distributed in multiple groups about the axis center of the first gear (202). And multiple second gears (205) are connected by synchronous belt drive through the synchronous belt (206). One end of the synchronous belt (206) is fixedly connected to the filter screen (207). The inner surface of the filter screen (207) is respectively lapped with the outer surfaces of multiple support rings (208). The structure composed of the second gear (205) and the synchronous belt (206) is symmetrically distributed in two groups up and down about the center of the filter screen (207); The outer surface of the filter screen (207) faces the air inlet passage (214). The air inlet passage (214) is opened on the outer shell (101). The collection part (300) is installed at the outer surface of the filter screen (207) at the position lapped with the support ring (208); The sealing plate (209) installed at the bottom of the filter screen (207) is fixedly connected and communicated with one end of the first passage (210). A turbine (211) rotating along its axis is arranged in the first passage (210). The turbine (211) is coaxially fixed to the output shaft of the second motor (212). The second motor (212) is fixedly connected to the outer surface of the outer shell (101). The other end of the first passage (210) is connected and communicated with one end of the exhaust duct (213). The exhaust duct (213) is fixedly connected to the outer shell (101). The other end of the exhaust duct (213) is communicated with the outside; 3. The hierarchical high-efficiency air filter according to claim 2, wherein: The collection part (300) includes a collection box (301), a guide groove (302), a through hole (303), an exhaust fan (304), and a handle (305); The outer surface of the filter screen (207) at the lap joint with the support ring (208) faces the air inlet of the collection box (301) and is hermetically lapped with the side surface of the air inlet. The collection box (301) is arranged in the guide groove (302) and moves along it. The guide groove (302) is opened on the outer shell (101). Multiple through holes (303) are evenly opened along the height direction on one side of the collection box (301) away from the support ring (208). The through holes (303) face the exhaust fan (304). The exhaust fan (304) is fixedly connected to the outer shell (101). The top of the collection box (301) is fixedly connected to the handle (305); 4. The hierarchical high-efficiency air filter according to claim 3, wherein: The second filtering part (400) further includes an annular channel (401), a shunt chamber (402), a shunt pipe (403), air holes (404), a first water pump (406), a second water pump (407), a water distribution tank (408), and a batching port (409); The other end of the first channel (210) is fixedly and sealingly connected and communicated with one end of the annular channel (401). The other end of the annular channel (401) is fixedly and coaxially connected and communicated with the middle of the shunt chamber (402). The upper surface of the annular channel (401) is fixedly connected and communicated with one end of a plurality of the shunt pipes (403) evenly along the circumferential direction. A plurality of the air holes (404) are evenly formed in the side surface of the shunt pipe (403). The shunt pipe (403) is arranged at the bottom of the mixing box (405). The side surface of the top of the mixing box (405) is fixedly connected and communicated with one end of a plurality of the exhaust pipes (213). The mixing box (405) is coaxially arranged with the annular channel (401); The bottom of the mixing box (405) is fixedly connected and communicated with the water inlet of the first water pump (406). The water outlet of the first water pump (406) is fixedly connected and communicated with the top of the water distribution tank (408). The bottom of the water distribution tank (408) is fixedly connected and communicated with the water inlet of the second water pump (407). The water outlet of the second water pump (407) is fixedly connected and communicated with the top of the mixing box (405). The water distribution tank (408) is fixedly connected and communicated with one end of the batching port (409). The other end of the batching port (409) is communicated with the outside.

5. The hierarchical high-efficiency air filter according to claim 4, wherein: The structure composed of the second gear (203), the first rotating shaft (204), the second gear (205), and the support ring (208) is symmetrically distributed in 3 groups about the axis of the first gear (202), and the number of the air inlet channels (214) is equal to the number of the above structures.

6. The hierarchical high-efficiency air filter according to claim 5, wherein: The number of the air inlet channels (214) is equal to the number of the collection parts (300), and the two are arranged at intervals.

7. The hierarchical high-efficiency air filter according to claim 6, wherein: The support ring (208) is a hollow cylindrical structure, and a plurality of through holes are evenly formed in the side wall of the support ring (208) along the circumferential direction.

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