Air filtering device and method for environmental protection engineering

Abstract

The present invention discloses an air filtering device and method for environmental protection engineering, comprising: a main unit, which comprises a filter cartridge and a sealing plate snap-connected to the upper surface of the filter cartridge, and a connecting arc plate is fixedly connected to the outer surface of the filter cartridge. The present invention uses an air inlet pipe to introduce air into the interior of the filter device, and then uses the air flow inside the air induction groove to make it contact with the obstruction plate, and then continuously pushes the obstruction plate through the air, so that the rotating disk rotates as a whole, and then the rotating disk drives the transmission plate on the lower surface to rotate as a whole, and then the internal structure of the device can rotate as a whole under the drive of the air. When the semicircular scraper inside the filter device is working, it will cause dust in the device to fly to a certain extent, that is, the air outlet filter hole can be used to make a small part of the air overflow from the air outlet filter hole to the outside, and then carry the flying dust into the collection box for the same collection, and then reduce the dust flying condition inside the device to a certain extent.

Description

Technical Field

[0001] The present invention relates to the technical field of air filtering structures for environmental protection engineering, and in particular to an air filtering device and method for environmental protection engineering. Background Art

[0002] The material removal step includes sterile air filtration. This process requires the use of sterile air filtration equipment to intercept and filter microbial impurities in the air. This equipment generally uses filter media, such as cotton, activated carbon, glass fiber, organic synthetic fiber, and asbestos filter plates. The use of these filter media utilizes their fiber components to intercept microbial impurities contained in the air flowing through, thereby obtaining sterile air.

[0003] The sterile air filtration equipment under the existing technology needs to keep the internal filter medium clean for a long time, so the staff needs to frequently disassemble and clean the equipment. The intercepted and accumulated microbial impurities need to be removed from the equipment and collected and processed, which will frequently waste manpower, resulting in the sterile air filtration equipment of the existing technology being not convenient to use, that is, the traditional sterile air filtration equipment does not have the function of automatically collecting pollutants. Summary of the invention

[0004] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0005] In view of the above problems existing in the existing air filtering device and method for environmental protection engineering, the present invention is proposed.

[0006] Therefore, the object of the present invention is to provide an air filtration device and method for environmental protection engineering, which is suitable for solving the problem that the sterile air filtration equipment in the prior art needs to keep the internal filter medium clean for a long time, so the staff needs to frequently disassemble and clean the equipment, and the intercepted and accumulated microbial impurities need to be removed from the equipment and collected and processed, which will frequently waste manpower, resulting in the sterile air filtration equipment in the prior art being not convenient to use, that is, the traditional sterile air filtration equipment does not have the problem of automatically collecting pollutants.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions: an air filtration device for environmental protection engineering, wherein the automatic control system uses an automatic control device, and the automatic control device includes:

[0008] The main unit comprises a filter cartridge and a sealing plate snap-connected to the upper surface of the filter cartridge, a first connecting arc plate is fixedly connected to the outer surface of the filter cartridge, and an air inlet pipe is fixedly connected to one side of the filter cartridge;

[0009] The rotation transmission unit comprises an air inlet ring plate fixedly connected in the filter cartridge and a fixed ring plate fixedly connected to the inner surface of the air inlet ring plate, the fixed ring plate is hollowed out with a T-shaped slide groove, a T-shaped rod is slidably connected in the T-shaped slide groove, and a rotating disk is fixedly connected to the lower surface of the T-shaped rod, a rotating block is fixedly connected to the outer surface of the rotating disk, an inclined groove is hollowed out in the rotating block, and an obstruction plate is fixedly connected in the inclined groove;

[0010] The cleaning and scraping unit comprises a filter element arranged in a filter cartridge and a bearing plate fixedly connected to a lower surface of the filter element, the outer surface of the bearing plate is fixedly connected to an outer gear ring, the outer gear ring is connected to an inner gear ring through gear meshing, the lower surface of the bearing plate is fixedly connected to an L-shaped connecting plate, one side of the L-shaped connecting plate is fixedly connected to a support rod, the L-shaped connecting plate, the bearing plate and the support rod are all fixedly connected by bolts, the lower surface of the rotating disk is fixedly connected to a rotating ring, the lower surface of the rotating ring is fixedly connected to a connecting shaft rod, the lower surface of the connecting shaft rod is fixedly connected to a transmission plate, the inner surface of the filter cartridge is fixedly connected to a ventilation filter plate, the upper surface of the filter element is snap-connected to an air duct, the outer surface of the air duct is fixedly connected to a connecting plate, a micro-drive motor is fixedly connected to the connecting shaft rod, and the micro-drive motor One end of the machine output shaft is fixedly connected to one end of the fixed shaft, and a semicircular scraper is rotatably connected to the outer surface of the fixed shaft, and a plurality of elastic brushes are distributed on one side of the arc surface of the semicircular scraper; the other end of the fixed shaft is rotatably connected to the upper surface of the holding plate, and a slide rail rod is fixedly connected to the upper surface of the holding plate, and a guide rod is fixedly connected to the slide rail rod, and a traction block is slidably connected to the outer surface of the guide rod, and a traction rope is fixedly connected to the upper surface of the traction block, and one end of the traction rope is fixedly connected to the inner surface of the winding wheel, and an arc scraper is slidably connected to the outer surface of the semicircular scraper, and one side of the arc scraper is connected to a support rod through a rotating shaft, and one side of the support rod is connected to one side of the extrusion block through a rotating shaft, and one side of the extrusion block is fixedly connected to a spring, and a spring is fixedly connected to the traction block, and an extrusion block is slidably connected to the traction block.

[0011] As a preferred solution of the air filtering device for environmental protection engineering described in the present invention, wherein: the sealing plate is fixedly connected with an air outlet duct, the air outlet duct is fixedly connected with an auxiliary fan, the lower surface of the first connecting arc plate is snap-connected with the second connecting arc plate, the inner surface of the second connecting arc plate is fixedly connected with a lower connecting cylinder, the outer surfaces of the filter cylinder and the lower connecting cylinder are hollowed out to provide air outlet filter holes, the diameter of the air outlet filter holes is 2 mm, the outer surface of the filter cylinder is fixedly connected with a collecting box, the inner surface of the lower connecting cylinder is snap-connected with a bottom plate, and the upper surface of the bottom plate is fixedly connected with a collecting ring.

[0012] As a preferred solution of the air filtering device for environmental protection engineering described in the present invention, the upper surface of the air guide duct is fixedly connected to the lower surface of the fixed ring plate, the number of the rotating blocks is several, and the several rotating blocks are evenly distributed on the outer surface of the rotating disk, the upper surface of the transmission plate is fixedly connected to a placement plate, the upper surface of the placement plate is fixedly connected to a micro servo motor, the inner surface of the filter cartridge is fixedly connected to an air induced plate, and the air induced groove is hollowed out in the air induced plate.

[0013] As a preferred solution of the air filtration device for environmental protection engineering described in the present invention, wherein: the upper surface of the air induced draft plate is fixedly connected to the lower surface of the ventilation filter plate, the ventilation filter plate and the air inlet ring plate are hollowed out to provide air induced draft grooves, one end of the output shaft of the micro servo motor is fixedly connected to a winding wheel, and the lower surface of the transmission plate is fixedly connected to a fixed shaft.

[0014] As a preferred solution of the air filtration device for environmental protection engineering described in the present invention, there are several semicircular scrapers, and the semicircular scrapers are evenly distributed on the outer surface of the filter element through a fixed axis. The initial arc surfaces of the semicircular scrapers have different contact angles with the filter element, so that the semicircular scrapers can fully cover the surface of the filter element during autonomous rotation.

[0015] An air filtration method for environmental protection engineering, the air filtration method is applicable to any of the above air filtration equipment, and the air filtration method comprises the following steps:

[0016] Step 1: Start the device and allow air to enter the device through the air intake pipe;

[0017] Step 2: Use the airflow to push the obstruction plate to rotate the rotating disk as a whole;

[0018] Step 3: The sliding rail rod and the semicircular scraper are driven to rotate together by the rotating rotating disk, and the micro drive motor is activated at the same time;

[0019] Step 4: Use a semicircular scraper and a curved scraper to clean different target surfaces respectively;

[0020] Step 5: At the same time, a small amount of air is allowed to overflow from the air outlet filter hole to the outside, thereby carrying the flying dust into the collection box;

[0021] Step 6: Use the air outlet duct and auxiliary fan to quickly discharge the filtered air inside;

[0022] Step 7: When the work is finished, turn off the equipment, remove the collection box and the lower connecting tube respectively for cleaning.

[0023] Beneficial effects of the present invention:

[0024] 1. Use the air inlet pipe to introduce air into the filter device, and then use the air flow inside the air inlet slot to make it contact with the obstruction plate, and then the air continuously pushes the obstruction plate to make the rotating disk rotate as a whole, and then the rotating disk drives the transmission plate on the lower surface to rotate as a whole, so that the internal structure of the equipment can rotate as a whole under the drive of the air, and then cooperate with the cleaning and scraping unit to collect and scrape the dust attached to the surface of the filter element;

[0025] 2. The micro drive motor built into the connecting shaft is used to carry the fixed shaft to rotate, so that the semicircular scraper on the outer surface of the fixed shaft rotates, and then the semicircular scraper rotates around the filter element on the basis of the movement of the transmission plate, and the dust on the surface of the filter element is cleaned by the elastic brush on one side of the rotating semicircular scraper, and the dust is adsorbed on the surface of the elastic brush to a certain extent, and then the elastic brush is scraped and cleaned by the arc scraper to reduce the dust attached to it;

[0026] 3. When the semicircular scraper inside the filter device is working, it will cause the dust inside the equipment to fly to a certain extent. The air outlet filter hole can be used to make a small part of the air overflow from the air outlet filter hole to the outside, and then carry the flying dust into the collection box for collection, thereby reducing the dust flying inside the equipment to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. Among them:

[0028] Figure 1 This is a schematic diagram of the overall structure of an air filter device for environmental protection engineering proposed by the present invention;

[0029] Figure 2 This is a schematic diagram of the internal structure of a filter cartridge of an air filter device for environmental protection engineering proposed by the present invention;

[0030] Figure 3 This is a schematic diagram of the structure of a rotation transmission unit of an air filter device for environmental protection engineering proposed by the present invention;

[0031] Figure 4 This is a schematic diagram of the internal cross-sectional structure of an air filter device for environmental protection engineering proposed by the present invention;

[0032] Figure 5 This is a schematic diagram of the structure of a rotating disk of an air filter device for environmental protection engineering proposed by the present invention;

[0033] Figure 6 This is a schematic diagram of the structure of the air outlet filter hole of an air filter device for environmental protection engineering proposed by the present invention;

[0034] Figure 7 This is a schematic diagram of the gear structure of an air filter device for environmental protection engineering proposed by the present invention;

[0035] Figure 8 This is a schematic diagram of the structure of a cleaning and scraping unit of an air filter device for environmental protection engineering proposed by the present invention;

[0036] Fig. 9 This is a schematic diagram of the initial angle distribution structure of a semicircular scraper of an air filter device for environmental protection engineering proposed by the present invention;

[0037] Fig.10 This is a flow chart of an air filtration method for environmental protection engineering proposed by the present invention.

[0038] Description of the drawings: 100, main unit; 101, filter cartridge; 102, lower connecting cartridge; 103, first connecting arc plate; 104, collecting box; 105, air inlet pipe; 106, air outlet pipe; 107, auxiliary fan; 108, sealing plate; 109, air induction plate; 110, air induction slot; 111, collecting ring; 112, bottom plate; 200, rotation transmission unit; 201, air inlet ring plate; 202, fixed ring plate; 203, obstruction plate; 204, ventilation filter plate; 205, inclined slot; 206, rotating block; 207, connecting shaft; 208, rotating ring; 209, rotating disk; 210, T-shaped slide slot; 211, connecting Plate; 212, air duct; 300, cleaning and scraping unit; 301, filter element; 302, load-bearing plate; 303, support rod; 304, micro servo motor; 305, transmission plate; 306, placement plate; 307, reel; 308, air filter hole; 309, L-shaped connecting plate; 310, outer gear ring; 311, bolt; 312, inner gear ring; 313, gear; 314, guide rod; 315, semicircular scraper; 316, traction block; 317, support rod; 318, arc scraper; 319, fixed shaft; 320, spring; 321, traction rope; 322, slide rail; 323, rotating shaft; 324, holding plate. DETAILED DESCRIPTION

[0039] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0040] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0041] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor is it an embodiment that is mutually exclusive with other embodiments, either individually or selectively.

[0042] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0043] Embodiment 1:

[0044] Reference Figure 1 - Fig.10 , which is an embodiment of the present invention, provides an air filtering device for environmental protection engineering, including a main unit 100, a rotation transmission unit 200, and a cleaning and scraping unit 300.

[0045] The main unit 100 includes a filter cartridge 101 and a sealing plate 108 connected to the upper surface of the filter cartridge 101. The outer surface of the filter cartridge 101 is fixedly connected to a first connecting arc plate 103. One side of the filter cartridge 101 is fixedly connected to an air inlet pipe 105.

[0046] Secondly, the rotation transmission unit 200 includes an air inlet ring plate 201 fixedly connected in the filter cartridge 101 and a fixed ring plate 202 fixedly connected to the inner surface of the air inlet ring plate 201, a T-shaped slide groove 210 is hollowed out in the fixed ring plate 202, a T-shaped rod is slidably connected in the T-shaped slide groove 210, and a rotating disk 209 is fixedly connected to the lower surface of the T-shaped rod, a rotating block 206 is fixedly connected to the outer surface of the rotating disk 209, an inclined groove 205 is hollowed out in the rotating block 206, and a blocking plate 203 is fixedly connected in the inclined groove 205;

[0047] Secondly, the cleaning and scraping unit 300 includes a filter element 301 arranged in the filter cartridge 101 and a load-bearing plate 302 fixedly connected to the lower surface of the filter element 301, an outer tooth ring 310 is fixedly connected to the outer surface of the load-bearing plate 302, the outer tooth ring 310 is meshingly connected to the inner tooth ring 312 through a gear 313, an L-shaped connecting plate 309 is fixedly connected to the lower surface of the load-bearing plate 302, a support rod 303 is fixedly connected to one side of the L-shaped connecting plate 309, and the L-shaped connecting plate 309 is fixedly connected to the load-bearing plate 302 and the support rod 303 by bolts 311.

[0048] Furthermore, the sealing plate 108 is fixedly connected to the air outlet duct 106, the air outlet duct 106 is fixedly connected to the auxiliary fan 107, the lower surface of the first connecting arc plate 103 is snap-connected to the second connecting arc plate, the inner surface of the second connecting arc plate is fixedly connected to the lower connecting tube 102, the outer surfaces of the filter tube 101 and the lower connecting tube 102 are hollowed out to provide air outlet filter holes 308, the diameter of the air outlet filter holes 308 is 2 mm, the outer surface of the filter tube 101 is fixedly connected to the collecting box 104, the inner surface of the lower connecting tube 102 is snap-connected to the bottom plate 112, and the upper surface of the bottom plate 112 is fixedly connected to the collecting ring 111.

[0049] Furthermore, a rotating ring 208 is fixedly connected to the lower surface of the rotating disk 209, a connecting shaft 207 is fixedly connected to the lower surface of the rotating ring 208, a transmission plate 305 is fixedly connected to the lower surface of the connecting shaft 207, a ventilation filter plate 204 is fixedly connected to the inner surface of the filter cartridge 101, an air duct 212 is snap-connected to the upper surface of the filter element 301, and a connecting plate 211 is fixedly connected to the outer surface of the air duct 212.

[0050] Furthermore, the upper surface of the air duct 212 is fixedly connected to the lower surface of the fixed ring plate 202, there are a plurality of rotating blocks 206, and the plurality of rotating blocks 206 are evenly distributed on the outer surface of the rotating disk 209, the upper surface of the transmission plate 305 is fixedly connected to a placement plate 306, the upper surface of the placement plate 306 is fixedly connected to a micro servo motor 304, the inner surface of the filter cartridge 101 is fixedly connected to an air induced draft plate 109, and an air induced draft groove 110 is hollowed out in the air induced draft plate 109.

[0051] Furthermore, the upper surface of the air induced draft plate 109 is fixedly connected to the lower surface of the ventilation filter plate 204, the ventilation filter plate 204 and the air inlet ring plate 201 are hollowed out to provide an air induced draft groove 110, one end of the output shaft of the micro servo motor 304 is fixedly connected to a winding wheel 307, and the lower surface of the transmission plate 305 is fixedly connected to a fixed shaft 319.

[0052] Furthermore, a semicircular scraper 315 is rotatably connected to the outer surface of the fixed shaft 319, and a plurality of elastic brushes are distributed on one side of the arc surface of the semicircular scraper 315. A micro drive motor is fixedly connected to the connecting shaft 207, and one end of the micro drive motor output shaft is fixedly connected to one end of the fixed shaft 319.

[0053] An air filtration method for environmental protection engineering, the air filtration method is applicable to any of the above air filtration devices, and the air filtration method comprises the following steps:

[0054] Step 1: Start the device to allow air to enter the device through the air inlet pipe 105;

[0055] Step 2: Use the airflow to push the blocking plate 203 to rotate the rotating disk 209 as a whole;

[0056] Step 3: The rotating disk 209 drives the slide rail rod 322 and the semicircular scraper 315 to rotate together, and the micro drive motor is activated at the same time;

[0057] Step 4: using the semicircular scraper 315 and the arc scraper 318 to clean different target surfaces respectively;

[0058] Step 5: At the same time, a small portion of air is caused to overflow from the air outlet filter hole 308 to the outside, thereby carrying the flying dust into the collection box 104;

[0059] Step 6: Use the air outlet pipe 106 and the auxiliary fan 107 to quickly discharge the filtered air inside;

[0060] Step 7: When the work is finished, turn off the equipment, remove the collection box 104 and the lower connecting tube 102 respectively for cleaning.

[0061] Embodiment 2

[0062] Reference Figure 3 - Figure 5 and Figure 8 , compared with the first embodiment, the difference is that: the other end of the fixed shaft 319 is rotatably connected to the upper surface of the holding plate 324, the upper surface of the holding plate 324 is fixedly connected with a slide rail rod 322, the inner part of the slide rail rod 322 is fixedly connected with a guide rod 314, the outer surface of the guide rod 314 is slidably connected with a traction block 316, the upper surface of the traction block 316 is fixedly connected with a traction rope 321, one end of the traction rope 321 is fixedly connected to the inner surface of the winding wheel 307, the outer surface of the semicircular scraper 315 is slidably connected with an arc scraper 318, and one side of the arc scraper 318 is connected to the rotating shaft 323 A support rod 317 is connected, one side of the support rod 317 is connected to one side of the extrusion block through a rotating shaft 323, and a spring 320 is fixedly connected to one side of the extrusion block, a spring 320 is fixedly connected inside the traction block 316, and an extrusion block is slidably connected inside the traction block 316, there are several semicircular scrapers 315, and the semicircular scrapers 315 are equidistantly distributed on the outer surface of the filter element 301 through a fixed shaft 319, and the initial arc surface of the semicircular scraper 315 has a different contact angle with the filter element 301, so that the semicircular scraper 315 can fully cover the surface of the filter element 301 during the autonomous rotation process;

[0063] The air is introduced into the filter device by the air inlet pipe 105, and then the air flow in the air inlet groove 110 is used to make it contact with the obstruction plate 203, and then the obstruction plate 203 is continuously pushed by the air, so that the rotating disk 209 rotates as a whole, and then the rotating disk 209 drives the transmission plate 305 on the lower surface to rotate as a whole, so that the internal structure of the device can rotate as a whole under the drive of the air, and then it cooperates with the cleaning and scraping unit 300 to collect and scrape the dust attached to the surface of the filter element 301, and the micro-drive motor built into the connecting shaft 207 is used to carry the fixed shaft 319 to rotate, so that the semicircular scraper 315 on the outer surface of the fixed shaft 319 rotates, and then on the basis of the movement of the transmission plate 305, the semicircular scraper 315 rotates around the filter element 301, and the dust on the surface of the filter element 301 is cleaned by the elastic brush on one side of the rotating semicircular scraper 315, and the dust is adsorbed on the surface of the elastic brush to a certain extent, and then the elastic brush is scraped and cleaned by the arc scraper 318 to reduce the dust attached to it.

[0064] Working principle: The air inlet pipe 105 is used to allow external air to enter the interior of the device, and the air inlet groove 110 is used to allow the air to pass through the air inlet ring plate 201, the rotating block 206 and the ventilation filter plate 204 respectively. When the airflow passes through the rotating block 206, the inclined surface inside the rotating block 206 makes the airflow have a tendency to move upward to a certain extent. At the same time, the obstruction plate 203 distributed inside the inclined surface makes the airflow encounter a certain resistance during the upward movement, so that the airflow can push the obstruction plate 203, and then the movement of the obstruction plate 203 cooperates with the rotating block 206 to move as a whole, so that the ventilation filter plate 204 can be kept rotating when the airflow enters the state, and then the air induction plate 109 is used to guide the air to the interior of the device;

[0065] Furthermore, when the ventilation filter plate 204 moves, the transmission plate 305 is driven to rotate along with the ventilation filter plate 204 through the connecting shaft 207, so that the semicircular scraper 315 on the lower surface of the transmission plate 305 rotates around the filter element 301, and then the fixed shaft 319 is driven to rotate by the micro-drive motor built into the connecting shaft 207, and then the semicircular scraper 315 is driven to rotate by the fixed shaft 319, so that during the semicircular scraper 315 rotating around the filter element 301, the elastic brush on one side of the semicircular scraper 315 is used to clean and scrape the dust attached to the surface of the filter element 301, so that the dust is attached to the surface of the elastic brush to a certain extent;

[0066] Furthermore, when the equipment is cleaning and scraping, a small amount of air overflows from the air outlet filter hole 308 to the outside through the air outlet filter hole 308, and then carries the flying dust into the collection box 104 for the same collection, thereby reducing the flying dust inside the equipment to a certain extent. Further, during the rotation and scraping process of the semicircular scraper 315, the micro servo motor 304 is started, and the traction rope 321 slowly carries the traction block 316 to move in the slide rail rod 322, so that it uses the arc scraper 318 to clean the elastic brush on the surface of the semicircular scraper 315, so that the dust attached to the surface falls off, and then the fallen dust is collected by the collecting ring 111, and the flying dust inside the equipment is carried out to the outside by using the air outlet filter hole 308 as much as possible, thereby improving the working efficiency of the equipment to a certain extent.

[0067] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. An air filter device for environmental protection engineering, characterized in that: The air filter device comprises: The main unit (100) comprises a filter cartridge (101) and a sealing plate (108) snap-fitted to the upper surface of the filter cartridge (101); the outer surface of the filter cartridge (101) is fixedly connected to a first connecting arc plate (103); an air outlet pipe (106) is fixedly connected inside the sealing plate (108); an auxiliary fan (107) is fixedly connected inside the air outlet pipe (106); a second connecting arc plate is snap-fitted to the lower surface of the first connecting arc plate (103); and the inner surface of the second connecting arc plate is fixedly connected to A lower connecting cylinder (102) is provided, the outer surfaces of the filter cylinder (101) and the lower connecting cylinder (102) are hollowed out to be provided with air outlet filter holes (308), the diameter of the air outlet filter holes (308) is 2 mm, the outer surface of the filter cylinder (101) is fixedly connected to a collection box (104), the inner surface of the lower connecting cylinder (102) is snap-connected to a bottom plate (112), the upper surface of the bottom plate (112) is fixedly connected to a collection ring (111), and one side of the filter cylinder (101) is fixedly connected to an air inlet pipe (105); A rotation transmission unit (200), comprising an air inlet ring plate (201) fixedly connected inside the filter cartridge (101) and a fixed ring plate (202) fixedly connected to the inner surface of the air inlet ring plate (201), the fixed ring plate (202) being hollowed out with a T-shaped slide groove (210), a T-shaped rod being slidably connected inside the T-shaped slide groove (210), and a rotating disk (209) being fixedly connected to the lower surface of the T-shaped rod, a rotating block (206) being fixedly connected to the outer surface of the rotating disk (209), an inclined groove (205) being hollowed out inside the rotating block (206), and a blocking plate (203) being fixedly connected inside the inclined groove (205); A cleaning and scraping unit (300) comprises a filter cartridge (101) provided with a filter element (301) and a bearing plate (302) fixedly connected to the lower surface of the filter element (301); an outer toothed ring (310) is fixedly connected to the outer surface of the bearing plate (302); the outer toothed ring (310) is meshingly connected to an inner toothed ring (312) via a gear (313); an L-shaped connecting plate (309) is fixedly connected to the lower surface of the bearing plate (302); a support rod (303) is fixedly connected to one side of the L-shaped connecting plate (309); the L-shaped connecting plate (309) is connected to the bearing plate (302) and the support rod (303) are fixedly connected by bolts (311), the lower surface of the rotating disk (209) is fixedly connected to a rotating ring (208), the lower surface of the rotating ring (208) is fixedly connected to a connecting shaft (207), the lower surface of the connecting shaft (207) is fixedly connected to a transmission plate (305), the inner surface of the filter cartridge (101) is fixedly connected to a ventilation filter plate (204), the upper surface of the filter element (301) is snap-connected to an air duct (212), the outer surface of the air duct (212) is fixedly connected to a connecting plate (211), and the inner surface of the connecting shaft (207) is fixedly connected to a micro drive. The micro drive motor is provided, and one end of the output shaft of the micro drive motor is fixedly connected to one end of the fixed shaft (319); the outer surface of the fixed shaft (319) is rotatably connected to a semicircular scraper (315); a plurality of elastic brushes are distributed on one side of the arc surface of the semicircular scraper (315); the other end of the fixed shaft (319) is rotatably connected to the upper surface of a holding plate (324); the upper surface of the holding plate (324) is fixedly connected to a slide rail rod (322); a guide rod (314) is fixedly connected inside the slide rail rod (322); a traction block (316) is slidably connected to the outer surface of the guide rod (314); the traction block (316) 16) A traction rope (321) is fixedly connected to the upper surface, one end of the traction rope (321) is fixedly connected to the inner surface of the reel (307), the outer surface of the semicircular scraper (315) is slidably connected to an arc scraper (318), one side of the arc scraper (318) is connected to a support rod (317) via a rotating shaft (323), one side of the support rod (317) is connected to one side of an extrusion block via a rotating shaft (323), and one side of the extrusion block is fixedly connected to a spring (320), the traction block (316) is fixedly connected to a spring (320), and the traction block (316) is slidably connected to an extrusion block.

2. The air filter device for environmental protection engineering according to claim 1, characterized in that: The upper surface of the air guide duct (212) is fixedly connected to the lower surface of the fixed ring plate (202); the number of the rotating blocks (206) is multiple, and the multiple rotating blocks (206) are evenly distributed on the outer surface of the rotating disk (209); the upper surface of the transmission plate (305) is fixedly connected to a placement plate (306); the upper surface of the placement plate (306) is fixedly connected to a micro servo motor (304); the inner surface of the filter cartridge (101) is fixedly connected to an air induction plate (109); and the air induction plate (109) is hollowed out to provide an air induction groove (110).

3. The air filter device for environmental protection engineering according to claim 2, characterized in that: The upper surface of the air induction plate (109) is fixedly connected to the lower surface of the ventilation filter plate (204); the ventilation filter plate (204) and the air inlet ring plate (201) are both hollowed out to provide an air induction groove (110); one end of the output shaft of the micro servo motor (304) is fixedly connected to a winding wheel (307); and the lower surface of the transmission plate (305) is fixedly connected to a fixed shaft (319).

4. The air filter device for environmental protection engineering according to claim 3, characterized in that: The number of the semicircular scrapers (315) is several, and the semicircular scrapers (315) are evenly distributed on the outer surface of the filter element (301) through the fixed shaft (319). The initial arc surface of the semicircular scraper (315) has different contact angles with the filter element (301), so that the semicircular scraper (315) can fully cover the surface of the filter element (301) during the autonomous rotation process.

5. An air filtration method for environmental protection engineering, the air filtration method is applicable to any one of the air filtration devices in claims 1-4 above, characterized in that: The air filtering method comprises the following steps: Step 1: Start the device to allow air to enter the device through the air inlet pipe (105); Step 2: Using airflow to push the obstruction plate (203) to rotate the rotating disk (209) as a whole; Step 3: The rotating disk (209) drives the slide rail rod (322) and the semicircular scraper (315) to rotate together, and the micro drive motor is activated at the same time; Step 4: using the semicircular scraper (315) and the arc scraper (318) to clean different target surfaces respectively; Step 5: At the same time, a small portion of air is allowed to overflow from the air outlet filter hole (308) to the outside, thereby carrying the flying dust into the collection box (104); Step 6: Use the air outlet pipe (106) and the auxiliary fan (107) to quickly discharge the filtered air inside; Step 7: When the work is finished, turn off the equipment, remove the collection box (104) and the lower connecting tube (102) respectively for cleaning.

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