Efficient grading jet mill

Abstract

The invention discloses an efficient grading jet mill, which belongs to the technical field of jet milling and comprises a grinding mechanism, an efficient grading mechanism, a collecting assembly and a plurality of support frames, the grinding mechanism, the efficient grading mechanism and the collecting assembly are installed on the supporting frame. The grinding mechanism comprises a grinding cylinder and an airflow crushing assembly, the feeding pipeline is fixedly connected with the grinding cylinder, one end of the feeding pipeline is communicated with an external powder conveyor, and the other end of the feeding pipeline penetrates through the grinding cylinder; the grinding cylinder is connected with the airflow crushing assembly; the efficient grading mechanism is mounted on the upper side of the grinding cylinder; the efficient grading mechanism comprises a grading assembly and a material returning assembly, the grading assembly is installed on the upper side of the grinding cylinder, and the material returning assembly is installed on the grinding cylinder; the grading assembly is connected with the collecting assembly. By means of the mode, the material returning assembly recycles materials graded through the grading assembly in a unified mode and then feeds the materials to the lower side of the grinding cylinder again, and the situation that large-particle materials directly fall down in the grinding cylinder and interfere with ascending airflow is avoided.

Description

Technical Field

[0001] This invention relates to the field of air jet milling technology, and more specifically to a high-efficiency classifying air jet mill. Background Technology

[0002] Air jet mills are a type of equipment that uses high-speed airflow energy to achieve ultrafine grinding of materials. They grind particles by airflow without mechanical pollution. Therefore, air jet mills are often chosen in industries such as pharmaceuticals, chemicals, food, and mineral processing when processing ultrafine powders.

[0003] For example, Chinese patent CN221334608U discloses an airflow pulverizer, in which powder particles are fed in through a feed nozzle; in the pulverizing chamber, high-speed airflow drives the particles to flow, causing the particles to collide and grind each other to form ultrafine powder; then the ultrafine powder rises with the airflow and is sorted by a classifying wheel, so that the large particles return to the pulverizing chamber for further grinding.

[0004] However, after the pulverizer pulverizes the powder, when the powder passes through the classifying wheel with the airflow, the larger powder particles are separated from the classifying wheel under the action of centrifugal force and are easily encountered by the rising airflow, making it difficult for them to fall to the nozzle for further impact grinding; and the large powder particles will block the rising airflow around the classifying wheel, thus affecting the grinding efficiency and classifying efficiency.

[0005] Based on this, the present invention designs a high-efficiency classifying airflow pulverizer to solve the above problems. Summary of the Invention

[0006] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a high-efficiency classifying airflow pulverizer.

[0007] To achieve the above objectives, the present invention provides the following technical solution: A high-efficiency classifying airflow pulverizer includes a grinding mechanism, a high-efficiency classifying mechanism, a collection component, and multiple support frames; The grinding mechanism, high-efficiency grading mechanism, and collection components are mounted on a support frame; The grinding mechanism includes a grinding cylinder and an airflow pulverizing assembly. A feed pipe is fixedly connected to the grinding cylinder. One end of the feed pipe is connected to an external powder conveyor, and the other end of the feed pipe passes through the grinding cylinder. The grinding cylinder is connected to the airflow pulverizing assembly, and a high-efficiency classification mechanism is installed on the upper side of the grinding cylinder. The high-efficiency grading mechanism includes a grading component and a return component. The grading component is installed on the upper side of the grinding cylinder, and the return component is installed on the grinding cylinder. The grading component is connected to the collection component.

[0008] Furthermore, the airflow pulverizing assembly includes nozzle one, nozzle two, and an airflow module. Multiple nozzles one and nozzle two are uniformly fixedly installed in a circumferential array on the lower side of the grinding cylinder, with nozzle one located above nozzle two. The airflow module is connected to nozzle one and nozzle two.

[0009] Furthermore, the airflow module includes an air compressor, a cooling and drying device, a manifold, a first branch pipe, and a second branch pipe. The air compressor and the cooling and drying device are connected by pipes. The output end of the air compressor is connected to the manifold through a pipe. Multiple first branch pipes are fixedly installed in a circumferential array at equal intervals on the upper side of the manifold. First branch pipes are fixedly connected to first nozzles. Multiple second branch pipes are fixedly installed in a circumferential array at equal intervals on the lower side of the manifold. Second branch pipes are fixedly connected to second nozzles. The manifold is connected to first nozzles through first branch pipes and to second nozzles through second branch pipes.

[0010] Furthermore, the grading assembly includes a grading box, a grading chamber, grading discs, a drive motor, grading blades, and a flow guiding component. The grading box is fixedly installed on the upper side of the grinding cylinder, and the lower side of the grading box is connected to the grinding cylinder. The grading chamber is formed inside the grading box. Two grading discs are symmetrically rotated and installed inside the grading box. The drive motor is fixedly installed on the grading box, and the output end of the drive motor passes through the grading box and is fixedly connected to one of the grading discs. A through hole is opened in the middle of the other grading disc. The grading blades are evenly distributed in a circumferential array between the two grading discs, and the ends of the grading blades are fixedly connected to the grading discs. A flow guiding component is installed inside the grading blades.

[0011] Furthermore, the flow guiding assembly includes a flow guiding tube and a fixing frame. The flow guiding tube is tapered, and the end with the larger diameter is fixedly connected to the grading disc near the drive motor. Multiple feed slots are evenly spaced in a circular array on the side of the flow guiding tube near the drive motor. The fixing frame is evenly distributed in a circular array on the outside of the flow guiding tube. One end of the fixing frame is fixedly connected to the grading blade, and the other end of the fixing frame is fixedly connected to the flow guiding tube.

[0012] Furthermore, the return material assembly includes a feeding baffle and a return material conveying module. The feeding baffle is fixedly installed at the bottom of the grading bin; the feeding baffle and the grading box form a return material bin; the return material conveying module is installed on the grading box and the grinding cylinder.

[0013] Furthermore, the return material conveying module includes return pipe one, return pipe two, and a blowing pipe. One end of each of the two return pipes one is symmetrically fixedly installed on one side of the classifier, and the other end of return pipe one is fixedly connected to one end of return pipe two. The other end of return pipe two passes through the grinding cylinder. One end of the blowing pipe is fixedly connected to the other side of the classifier. The other end of the blowing pipe is connected to an external fan. The blowing pipe is connected to the return hopper, return pipe one, and return pipe two.

[0014] Furthermore, the collection assembly includes a cyclone separator, a collection box, a collection pipe, and an electrostatic adsorption assembly. The cyclone separator is fixedly connected to one end of a collection pipe, and the other end of the collection pipe is fixedly connected to a classifying box. The guide pipe and classifying blades are connected to the cyclone separator through through holes on the classifying disc and the collection pipe. The collection box is fixedly installed on a support frame and is fixedly connected to the bottom of the cyclone separator. The electrostatic adsorption assembly is installed on the support frame.

[0015] Compared with the prior art, the beneficial effects of this invention are as follows: Material is fed into the grinding cylinder through the feeding pipe. The airflow pulverizing component is activated, causing the material to collide with each other under the impact of the airflow within the grinding cylinder, achieving crushing. The crushed material moves with the airflow to the grading component, where it is graded. Smaller particles pass through the grading component and are collected by the collecting component. Larger particles are collected by the return material component and transferred to the lower side of the grinding cylinder, where they are again crushed by the high-speed airflow under the action of the airflow pulverizing component. During this process, the return material component uniformly recovers the graded material and feeds it back to the lower side of the grinding cylinder, preventing large particles from falling directly into the grinding cylinder and interfering with the rising airflow, thus ensuring grading efficiency. It also ensures that the graded large particles smoothly return to the grinding cylinder, avoiding interference with the material flowing with the rising airflow at the lower side, thereby further ensuring pulverizing efficiency. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0017] Figure 1 This is a perspective view of a high-efficiency classifying airflow pulverizer according to the present invention; Figure 2 This is a front view of a high-efficiency classifying airflow pulverizer according to the present invention; Figure 3 This is a left view of a high-efficiency classifying airflow pulverizer according to the present invention; Figure 4 For along Figure 3 A three-dimensional view after part of the structure has been removed along the AA direction; Figure 5 for Figure 4 Enlarged view of point B in the middle; Figure 6 This is a schematic diagram of the guide tube and its connection structure; Figure 7 for Figure 4 A magnified view of point C in the middle.

[0018] The labels in the diagram represent: 1. Support frame; 2. Grinding mechanism; 21. Grinding cylinder; 211. Feed pipe; 22. Airflow pulverizing assembly; 221. Air compressor; 222. Cooling and drying device; 223. Combination pipe; 224. Diversion pipe one; 225. Diversion pipe two; 226. Nozzle one; 227. Nozzle two; 3. High-efficiency classification mechanism; 31. Classification assembly; 311. Classification box; 312. Classification bin; 313. Classification wheel; 314. Drive motor; 315. 316. Blade; 316. Flow guide assembly; 3161. Flow guide pipe; 3162. Fixing frame; 3163. Feed slot; 32. Return assembly; 321. Feed baffle; 322. Return bin; 323. Return pipe one; 324. Return pipe two; 325. Blowing pipe; 4. Collection assembly; 41. Cyclone separator; 42. Collection box; 43. Collection pipe; 44. Electrostatic adsorption assembly; 441. Electrostatic settling box; 442. Adsorption baffle; 443. Settling channel. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0020] The terms "left," "right," "front," "back," "up," and "down" used in the following description refer to the orientation from the perspective of the front view.

[0021] Example 1: In some embodiments, please refer to the accompanying drawings. Figures 1-2 A high-efficiency classifying airflow pulverizer includes a grinding mechanism 2, a high-efficiency classifying mechanism 3, a collection component 4, and multiple support frames 1; The grinding mechanism 2, the high-efficiency grading mechanism 3, and the collection component 4 are mounted on the support frame 1; like Figure 2 As shown, the grinding mechanism 2 includes a grinding cylinder 21 and an airflow pulverizing assembly 22. The feed pipe 211 is fixedly connected to the grinding cylinder 21. One end of the feed pipe 211 is connected to an external powder conveyor, and the other end of the feed pipe 211 passes through the grinding cylinder 21. The grinding cylinder 21 is connected to the airflow pulverizing assembly 22, and the high-efficiency classification mechanism 3 is installed on the upper side of the grinding cylinder 21. like Figure 2As shown, the high-efficiency grading mechanism 3 includes a grading component 31 and a return component 32. The grading component 31 is installed on the upper side of the grinding cylinder 21, and the return component 32 is installed on the grinding cylinder 21. The grading component 31 is connected to the collection component 4.

[0022] In this embodiment, when the high-efficiency classifying airflow pulverizer is working normally, the material is fed into the grinding cylinder 21 through the feed pipe 211. The airflow pulverizing component 22 is activated, causing the material to collide with each other under the impact of the airflow inside the grinding cylinder 21, thus achieving crushing. The crushed material moves with the airflow to the classifying component 31. After being classified by the classifying component 31, the smaller particles pass through the classifying component 31 and are collected by the collecting component 4. The larger particles are collected by the return component 32 and transferred to the lower side of the grinding cylinder 21, where they are crushed again by the high-speed airflow under the action of the airflow pulverizing component 22. During this process, the return component 32 uniformly recovers the material classified by the classifying component 31 and feeds it back to the lower side of the grinding cylinder 21, preventing large particles from falling directly into the grinding cylinder 21 and interfering with the rising airflow, thus ensuring classification efficiency. It also ensures that the classified large particles return smoothly to the grinding cylinder 21, avoiding interference with the material flowing with the rising airflow on the lower side, thereby further ensuring pulverizing efficiency.

[0023] Example 2: In some embodiments, as a preferred embodiment of the present invention, such as... Figures 4-6 As shown, the airflow pulverizing assembly 22 includes a first nozzle 226, a second nozzle 227, and an airflow module. Multiple first nozzles 226 and second nozzles 227 are uniformly fixedly installed in a circular array at equal intervals on the lower side of the grinding cylinder 21. The first nozzle 226 is located above the second nozzle 227. The airflow module is connected to the first nozzle 226 and the second nozzle 227. The airflow module includes an air compressor 221, a cooling and drying device 222, a manifold 223, a first branch pipe 224, and a second branch pipe 225. The air compressor 221 and the cooling and drying device 222 are connected by pipes. The output end of the air compressor 221 is connected to the manifold 223 by a pipe. Multiple first branch pipes 224 are uniformly and evenly fixedly installed in a circular array on the upper side of the manifold 223. The first branch pipes 224 are fixedly connected to the first nozzle 226. Multiple second branch pipes 225 are uniformly and evenly fixedly installed in a circular array on the lower side of the manifold 223. The second branch pipes 225 are fixedly connected to the second nozzle 227. The manifold 223 is connected to the first nozzle 226 through the first branch pipe 224, and the manifold 223 is connected to the second nozzle 227 through the second branch pipe 225. like Figure 4 and Figure 6As shown, the grading assembly 31 includes a grading box 311, a grading chamber 312, grading discs 313, a drive motor 314, grading blades 315, and a flow guiding assembly 316. The grading box 311 is fixedly installed on the upper side of the grinding cylinder 21, and the lower side of the grading box 311 is connected to the grinding cylinder 21. The grading chamber 312 is formed inside the grading box 311. Two grading discs 313 are symmetrically rotated and installed inside the grading box 311. The drive motor 314 is fixedly installed on the grading box 311, and the output end of the drive motor 314 passes through the grading box 311 and is fixedly connected to one of the grading discs 313. A through hole is opened in the middle of the other grading disc 313. The grading blades 315 are evenly distributed in a circular array between the two grading discs 313, and the ends of the grading blades 315 are fixedly connected to the grading discs 313. A flow guiding assembly 316 is installed inside the grading blades 315. The flow guiding assembly 316 includes a flow guiding pipe 3161 and a fixing frame 3162. The flow guiding pipe 3161 is tapered, and the larger diameter end of the flow guiding pipe 3161 is fixedly connected to the grading wheel 313 near the drive motor 314. Multiple feed slots 3163 are evenly spaced in a circular array on the side of the flow guiding pipe 3161 near the drive motor 314. The fixing frame 3162 is evenly distributed in a circular array on the outside of the flow guiding pipe 3161. One end of the fixing frame 3162 is fixedly connected to the grading blade 315, and the other end of the fixing frame 3162 is fixedly connected to the flow guiding pipe 3161. The return material assembly 32 includes a feeding baffle 321 and a return material conveying module. The feeding baffle 321 is fixedly installed at the bottom of the grading bin 312. The feeding baffle 321 and the grading box 311 form the return material bin 322. The return material conveying module is installed on the grading box 311 and the grinding cylinder 21. The return material conveying module includes a return pipe 323, a return pipe 324, and a blowing pipe 325. One end of the two return pipes 323 are symmetrically fixedly installed on one side of the classifier 311, and the other end of the return pipe 323 is fixedly connected to one end of the return pipe 324. The other end of the return pipe 324 passes through the grinding cylinder 21. One end of the blowing pipe 325 is fixedly connected to the other side of the classifier 311. The other end of the blowing pipe 325 is connected to an external fan. The blowing pipe 325 is connected to the return pipe 324 through the return bin 322 and the return pipe 323. like Figure 2 and Figure 7As shown, the collection assembly 4 includes a cyclone separator 41, a collection box 42, a collection pipe 43, and an electrostatic adsorption assembly 44. The cyclone separator 41 is fixedly connected to one end of a collection pipe 43, and the other end of the collection pipe 43 is fixedly connected to a classifying box 311. The guide pipe 3161 and the classifying blades 315 are connected to the cyclone separator 41 through the through hole on the classifying wheel 313 and the collection pipe 43. The collection box 42 is fixedly installed on the support frame 1 and is fixedly connected to the bottom of the cyclone separator 41. The electrostatic adsorption assembly 44 is installed on the support frame 1. The electrostatic adsorption assembly 44 includes an electrostatic settling box 441 and adsorption baffles 442. The electrostatic settling box 441 is fixedly installed on the support frame 1. Multiple sets of adsorption baffles 442 are evenly and uniformly fixedly installed inside the electrostatic settling box 441. The adsorption baffles 442 form a settling channel 443. One end of the electrostatic settling box 441 is fixedly connected to one end of another collection pipe 43. The other end of the collection pipe 43 is fixedly connected to the discharge end of the cyclone separator 41. The other end of the electrostatic settling box 441 is connected to the bag filter dust collector through a pipe.

[0024] In this embodiment, when the grinding mechanism 2, the high-efficiency grading mechanism 3, and the collecting component 4 are working normally, the material is fed into the grinding cylinder 21 through the feeding pipe 211. The air compressor 221 and the cooling and drying device 222 are started, so that the air, after being dried and cooled, flows through the manifold pipe 223 and then the branch pipe 224 to the nozzle 226 and the nozzle 227. High-speed airflow is sprayed through the nozzle 226 and the nozzle 227, so that the material flows with the high-speed airflow. The material collides with each other under the impact of the airflow in the grinding cylinder 21, and is crushed. The crushed material moves with the airflow to the grading bin 312 in the grading box 311. The drive motor 314 drives the classifying disc 313, classifying blades 315, fixing frame 3162, and guide pipe 3161 to rotate. When the material enters between the classifying blades 315 and the classifying disc 313, the larger particles fly out under the action of centrifugal force. The larger particles fall into the return hopper 322. The external fan blows air into the return hopper 322 through the blowing pipe 325. The airflow carries the larger particles back to the grinding cylinder 21 through the return pipe 1 323 and the return pipe 2 324. This returns the larger particles to the grinding cylinder 21, avoiding interference with the material flowing with the rising airflow below, thereby further ensuring the crushing efficiency. Some smaller particles pass through the classifying blades 315 and then through the through holes on the classifying disc 313 into the collection pipe 43. Another portion of smaller particles passes through the classifying blades 315, then through the feed slot 3163 into the guide pipe 3161, and then through the through holes into the collection pipe 43. The material then enters the cyclone separator 41 through the collection pipe 43, where most of the material is collected by the collection box 42. A small portion of the material enters the electrostatic settling box 441, where it flows in the settling channel 443 formed by the electrostatic settling box 441 and the adsorption baffle 442. During this process, the material is further adsorbed onto the surfaces of the electrostatic settling box 441 and the adsorption baffle 442 due to electrostatic effects, thus achieving further collection of the material.

[0025] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A high-efficiency classifying airflow pulverizer, comprising a grinding mechanism (2), a high-efficiency classifying mechanism (3), a collecting assembly (4), and multiple support frames (1), characterized in that: The grinding mechanism (2), the high-efficiency grading mechanism (3), and the collection component (4) are mounted on the support frame (1); The grinding mechanism (2) includes a grinding cylinder (21) and an airflow pulverizing assembly (22). The feed pipe (211) is fixedly connected to the grinding cylinder (21). One end of the feed pipe (211) is connected to an external powder conveyor, and the other end of the feed pipe (211) passes through the grinding cylinder (21). The grinding cylinder (21) is connected to the airflow pulverizing assembly (22), and a high-efficiency classification mechanism (3) is installed on the upper side of the grinding cylinder (21). The high-efficiency grading mechanism (3) includes a grading component (31) and a return component (32). The grading component (31) is installed on the upper side of the grinding cylinder (21), and the return component (32) is installed on the grinding cylinder (21). The grading component (31) is connected to the collection component (4).

2. The high-efficiency classifying airflow pulverizer according to claim 1, characterized in that, The airflow pulverizing assembly (22) includes nozzle one (226), nozzle two (227) and airflow module. Multiple nozzle one (226) and nozzle two (227) are uniformly fixedly installed in a circular array on the lower side of the grinding cylinder (21). Nozzle one (226) is located above nozzle two (227). The airflow module is connected to nozzle one (226) and nozzle two (227).

3. The high-efficiency classifying airflow pulverizer according to claim 2, characterized in that, The airflow module includes an air compressor (221), a cooling and drying device (222), a manifold (223), a first branch pipe (224), and a second branch pipe (225). The air compressor (221) and the cooling and drying device (222) are connected by a pipe. The output end of the air compressor (221) is connected to the manifold (223) through a pipe. Multiple first branch pipes (224) are fixedly installed in a circular array at equal intervals on the upper side of the manifold (223). The first branch pipe (224) is fixedly connected to the first nozzle (226). Multiple second branch pipes (225) are fixedly installed in a circular array at equal intervals on the lower side of the manifold (223). The second branch pipe (225) is fixedly connected to the second nozzle (227). The manifold (223) is connected to the first nozzle (226) through the first branch pipe (224), and the manifold (223) is connected to the second nozzle (227) through the second branch pipe (225).

4. The high-efficiency classifying airflow pulverizer according to claim 3, characterized in that, The grading assembly (31) includes a grading box (311), a grading chamber (312), grading discs (313), a drive motor (314), grading blades (315), and a flow guiding assembly (316). The grading box (311) is fixedly installed on the upper side of the grinding cylinder (21), and the lower side of the grading box (311) is connected to the grinding cylinder (21). The grading chamber (312) is formed inside the grading box (311). Two grading discs (313) are symmetrically rotated and installed inside the grading box (311). (314) is fixedly installed on the grading box (311). The output end of the drive motor (314) passes through the grading box (311) and is fixedly connected to a grading wheel (313). A through hole is opened in the middle of the other grading wheel (313). Grading blades (315) are evenly distributed in a circular array between the two grading wheels (313). The ends of the grading blades (315) are fixedly connected to the grading wheel (313). A flow guide assembly (316) is installed inside the grading blades (315).

5. The high-efficiency classifying airflow pulverizer according to claim 4, characterized in that, The flow guiding assembly (316) includes a flow guiding pipe (3161) and a fixing frame (3162). The flow guiding pipe (3161) is conical, and the larger diameter end of the flow guiding pipe (3161) is fixedly connected to the grading wheel (313) near the drive motor (314). Multiple feed slots (3163) are evenly spaced in a circular array on the side of the flow guiding pipe (3161) near the drive motor (314). The fixing frame (3162) is evenly distributed in a circular array on the outside of the flow guiding pipe (3161). One end of the fixing frame (3162) is fixedly connected to the grading blade (315), and the other end of the fixing frame (3162) is fixedly connected to the flow guiding pipe (3161).

6. The high-efficiency classifying airflow pulverizer according to claim 5, characterized in that, The return material assembly (32) includes a feeding baffle (321) and a return material conveying module. The feeding baffle (321) is fixedly installed at the bottom of the grading bin (312). The feeding baffle (321) and the grading box (311) form a return material bin (322). The return material conveying module is installed on the grading box (311) and the grinding cylinder (21).

7. The high-efficiency classifying airflow pulverizer according to claim 6, characterized in that, The return material conveying module includes return pipe one (323), return pipe two (324) and blowing pipe (325). One end of the two return pipes one (323) is symmetrically fixedly installed on one side of the classifier (311). The other end of the return pipe one (323) is fixedly connected to one end of the return pipe two (324). The other end of the return pipe two (324) passes through the grinding cylinder (21). One end of the blowing pipe (325) is fixedly connected to the other side of the classifier (311). The other end of the blowing pipe (325) is connected to the external fan. The blowing pipe (325) is connected to the return hopper (322), return pipe one (323) and return pipe two (324) through the return hopper (322) and return pipe two (324).

8. The high-efficiency classifying airflow pulverizer according to claim 7, characterized in that, The collection assembly (4) includes a cyclone separator (41), a collection box (42), a collection pipe (43), and an electrostatic adsorption assembly (44). The cyclone separator (41) is fixedly connected to one end of a collection pipe (43), and the other end of the collection pipe (43) is fixedly connected to a classifier (311). The guide pipe (3161) and the classifier blades (315) are connected to the cyclone separator (41) through the through hole on the classifier wheel (313) and the collection pipe (43). The collection box (42) is fixedly installed on the support frame (1) and is fixedly connected to the bottom of the cyclone separator (41). The electrostatic adsorption assembly (44) is installed on the support frame (1).

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