Dust removal device for refractory material production

Abstract

The utility model provides a dust removal device for refractory material production. The dust removal device comprises a production workshop, a fan, a mixer, a settling chamber, a first dust remover and a second dust remover which are sequentially connected in series, the mixer is also sequentially connected with an ultrasonic atomizing chamber and a water tank; a plurality of production devices are arranged in the production workshop, an air exhaust main pipe is arranged at the top in the production workshop, and the air exhaust main pipe is connected with the air exhaust end of a fan; the air exhaust main pipe is connected with the plurality of air collecting hoods in a one-to-one correspondence manner through the plurality of air exhaust branch pipes; and the gas collecting hoods are arranged above the production equipment and correspond to the production equipment one by one. According to the device, through cooperative use of the equipment, the defects that in an existing dust removal mode, sewage is likely to be generated, and the dust removal effect is poor are overcome.

Description

Technical Field

[0001] The present application relates to the technical field of industrial production dust removal, and in particular to a dust removal device for refractory material production. Background Art

[0002] Refractory materials refer to a type of inorganic non-metallic materials with a refractoriness of not less than 1580°C. Refractory materials are used in various fields of the national economy, such as steel, non-ferrous metals, glass, cement, ceramics, petrochemicals, machinery, boilers, light industry, electricity, and military industry. They are essential basic materials to ensure the production and technological development of the above industries, and they play an irreplaceable and important role in the development of high-temperature industrial production.

[0003] In the production of refractory materials, a variety of raw materials are mixed and ground into a certain fineness to make powder, and then the powder is packaged according to demand or directly pressed into a block of a certain shape. Since a large amount of dust is inevitably generated during the mixing, grinding, and packaging processes in the production of refractory materials, in order to protect the health of the staff and the cleanliness of the working environment, the dust generated in the production of refractory materials is removed. Existing dust removal methods mainly include dry dust removal and wet dust removal, but wet dust removal is prone to produce a large amount of sewage, and dry dust removal is difficult to intercept and remove dust particles that are too fine in the dust, so the dust removal effect is not good. Utility Model Content

[0004] The present application provides a dust removal device for refractory material production, which is used to solve the problems of easy generation of sewage and poor dust removal effect in existing dust removal methods.

[0005] The present application provides a dust removal device for refractory material production, comprising a production workshop, a fan, a mixer, a settling chamber, a first dust collector and a second dust collector connected in series in sequence;

[0006] The mixer is also connected to the ultrasonic atomization chamber and the water tank in sequence;

[0007] There are multiple production equipments in the production workshop. An exhaust pipe is installed on the top of the production workshop, and the exhaust pipe is connected to the exhaust end of the fan;

[0008] The exhaust main pipe is connected to the multiple gas collecting hoods in a one-to-one correspondence through multiple exhaust branch pipes;

[0009] The gas collecting hood is arranged above the production equipment and corresponds to the production equipment one by one.

[0010] Optionally, the side walls of the production workshop are further provided with a plurality of exhaust hoods, and an axial flow exhaust fan is provided in the exhaust hood;

[0011] The exhaust hood is connected to the dust-laden gas input end of the mixer.

[0012] Optionally, the mixer includes a drainage tube and a mixing tube that are sequentially connected;

[0013] The drainage tube includes an inner tube and an outer tube which are coaxially arranged;

[0014] One end of the outer tube is closed and the other end is connected to the mixing tube, and the inner tube passes through the closed end of the outer tube and extends into the outer tube;

[0015] An opening is provided on one side of the outer tube and is connected to the ultrasonic atomization chamber;

[0016] The inner tube is connected to the exhaust end of the fan;

[0017] An axial flow impeller is arranged at one end of the mixing tube close to the drainage tube.

[0018] Optionally, the first dust collector comprises a housing;

[0019] A filter material layer is arranged at the upper part of the shell, and a barrel-shaped partition is arranged at the lower part;

[0020] An air intake pipe is also vertically arranged in the shell, and the air intake pipe passes through the bottom of the shell and extends into the barrel-shaped partition;

[0021] A gas outlet is provided at the top of the shell body, and a discharge port is provided at the bottom.

[0022] Optionally, a stirring rake is also provided in the filter material layer.

[0023] Optionally, the stirring rake includes a rotating shaft connected to the motor, the rotating shaft is connected to a rotating disk, and a plurality of rake teeth are connected to the bottom of the rotating disk.

[0024] Optionally, the second dust collector comprises a cylindrical body, the bottom of which is connected to the conical cylinder;

[0025] The bottom of the conical cylinder is connected to the aggregate bin;

[0026] An input port is provided on the side of the cylinder;

[0027] The top of the cylinder is closed, and an output port is opened at the center of the top;

[0028] A filter cartridge is arranged in the cylindrical body, one end of the filter cartridge is closed, and the other end is connected with the output port.

[0029] The present application provides a dust removal device for refractory material production, which mixes the dust-containing gas sucked by the fan with the mist water supplied by the ultrasonic atomization chamber by setting a mixer, thereby increasing the humidity of the dust-containing gas, increasing the specific gravity of the dust, and facilitating the separation of the dust. At the same time, a first dust collector and a second dust collector are set to further remove the dust from the dust-containing gas after sedimentation in the sedimentation chamber. The device of the present application, through the coordinated use of the above-mentioned equipment, sucks the dust from the refractory material production workshop, mixes it with mist water to increase the specific gravity of the dust, and then treats the dust-containing gas with increased humidity through sedimentation and two dust removal methods in sequence, thereby overcoming the disadvantages of the existing dust removal method that it is easy to generate sewage and the dust removal effect is poor. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0031] Figure 1 A schematic diagram of a dust removal device for refractory material production provided in one embodiment of the present application;

[0032] Figure 2 A schematic diagram of a production workshop provided in an embodiment of the present application;

[0033] Figure 3 A schematic diagram of the structure of a mixer provided in one embodiment of the present application;

[0034] Figure 4 A schematic diagram of the structure of a first dust collector provided in one embodiment of the present application;

[0035] Figure 5 A schematic diagram of the structure of a stirring rake provided in an embodiment of the present application;

[0036] Figure 6 A schematic diagram of the structure of a second dust collector provided in one embodiment of the present application.

[0037] Description of reference numerals:

[0038] 1. Production workshop; 2. Fan; 3. Mixer; 4. Sedimentation chamber; 5. First dust collector; 6. Second dust collector; 7. Ultrasonic atomization chamber; 11. Production equipment; 12. Exhaust main pipe; 13. Exhaust hood; 31. Drainage pipe; 32. Mixing pipe; 33. Axial flow impeller; 51. Shell; 52. Filter material layer; 53. Barrel-shaped partition; 54. Inlet pipe; 55. Mixing rake; 61. Cylinder; 62. Conical cylinder; 63. Collection bin; 64. Filter cartridge; 70. Water tank; 121. Exhaust branch pipe; 122. Collection hood; 131. Axial flow exhaust fan; 311. Inner pipe; 312. Outer pipe; 501. Gas outlet; 502. Discharge port; 551. Rotating shaft; 552. Turntable; 553. Rake teeth; 601. Input port; 602. Output port. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application is clearly and completely described below. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work also fall within the scope of protection of the present application.

[0040] like Figure 1 As shown, the present application provides a dust removal device for refractory material production, comprising a production workshop 1, a fan 2, a mixer 3, a settling chamber 4, a first dust collector 5 and a second dust collector 6 connected in series in sequence;

[0041] The mixer 3 is also connected to the ultrasonic atomization chamber 7 and the water tank 70 in sequence;

[0042] A plurality of production equipment 11 are arranged in the production workshop 1. An exhaust pipe 12 is arranged at the top of the production workshop 1. The exhaust pipe 12 is connected to the exhaust end of the fan 2.

[0043] The exhaust main pipe 12 is connected to a plurality of gas collecting hoods 122 in a one-to-one correspondence through a plurality of exhaust branch pipes 121;

[0044] The gas collecting hood 122 is disposed above the production equipment 11 and corresponds one-to-one to the production equipment 11 .

[0045] The ultrasonic atomization chamber 7 atomizes the clean water supplied from the water tank 70 by means of an ultrasonic atomizer arranged in the atomization chamber. The particles of the atomized water are fine and can easily flow with the air flow, so as to be easily mixed with the dust-containing gas.

[0046] In the present application, the production equipment is, for example, a mixing kettle, a grinding device, a transfer device, etc. for producing refractory materials.

[0047] In the present application, the gas collecting hood 122 is suspended above the production equipment 11 through the gas extraction branch pipe 121. In an achievable manner, the gas extraction branch pipe 121 is a retractable flexible pipe, so that the operator can pull down the gas collecting hood 122 to extract dust from the position where suction is required.

[0048] When in use, the fan 2 is turned on to suck the production workshop. The fan 2 can suck the corresponding production equipment 11 through the air collecting hood 122 on the air extraction branch pipe 121 to reduce the dust scattering during production. The dust-containing gas sucked by the fan is input into the mixer 3 and mixed with the mist water supplied by the ultrasonic atomization chamber 7 to increase the humidity. After the dust absorbs the water mist, the specific gravity increases, which is more conducive to separation, and at the same time, it can make part of the dust agglomerate into larger particles, which is conducive to capture and removal.

[0049] After the dust-laden gas and the mist water are mixed in the mixer 3, they enter the settling chamber 4 for settling. Since the specific gravity of the dust increases after mixing with the mist water, when entering the settling chamber 4, the cross-section through which the gas flows decreases, the flow rate decreases, and the dust particles with a large specific gravity and agglomeration in the dust-laden gas fall to the bottom of the settling chamber 4 and are separated from the gas. The dust that cannot be separated in the settling chamber 4 enters the first dust collector 5 with the air flow for separation. The dust-laden gas after the dust removal in the first dust collector 5 is then input into the second dust collector 6 for further dust removal.

[0050] The present application provides a dust removal device for refractory material production, which mixes the dust-containing gas sucked by the fan 2 with the mist water supplied by the ultrasonic atomization chamber 7 by setting a mixer 3, thereby increasing the humidity of the dust-containing gas, increasing the specific gravity of the dust, and facilitating dust separation. At the same time, a first dust collector 5 and a second dust collector 6 are set to further remove dust from the dust-containing gas after sedimentation in the sedimentation chamber 4. The device of the present application, through the coordinated use of the above-mentioned equipment, sucks the dust from the refractory material production workshop, mixes it with mist water to increase the specific gravity of the dust, and then treats the dust-containing gas with increased humidity through sedimentation and two dust removal methods in sequence, thereby overcoming the disadvantages of the existing dust removal method that it is easy to generate sewage and the dust removal effect is poor.

[0051] like Figure 2 As shown, optionally, a plurality of exhaust hoods 13 are further provided on the side wall of the production workshop 1, and an axial flow exhaust fan 131 is provided in the exhaust hood 13;

[0052] The exhaust hood 13 is connected to the dust-laden gas input end of the mixer 3 .

[0053] In the present application, a plurality of exhaust hoods 13 with axial flow exhaust fans 131 are arranged on the side walls of the production workshop 1, which can suck the flying dust in the production workshop and reduce the dust content of the air inside the workshop.

[0054] like Figure 3As shown, optionally, the mixer 3 includes a drainage pipe 31 and a mixing pipe 32 which are connected in sequence;

[0055] The drainage tube 31 includes an inner tube 311 and an outer tube 312 which are coaxially arranged;

[0056] One end of the outer tube 312 is closed and the other end is connected to the mixing tube 32, and the inner tube 311 passes through the closed end of the outer tube 312 and extends into the outer tube 312;

[0057] An opening is provided on one side of the outer tube 312 and is connected to the ultrasonic atomization chamber 7;

[0058] The inner tube 311 is connected to the exhaust end of the fan 2;

[0059] An axial flow impeller 33 is disposed at one end of the mixing tube 32 close to the drainage tube 31 .

[0060] When in use, when mixing in the mixer 3, the dust-containing gas enters from the inner tube 311 of the drainage tube 31 and is transported to the mixing tube 32. Because the flow of the dust-containing gas will cause the pressure near the outlet of the drainage tube 31 to decrease, the atomized water in the ultrasonic atomization chamber 7 is drawn into the space between the outer tube 312 and the inner tube 311, and is transported to the mixing tube 32 together with the dust-containing gas. The blowing of the airflow will drive the axial flow impeller 33 to rotate, which can promote the mixing of the dust-containing gas and the mist water. The dust-containing gas and the mist water are mixed in the mixing tube 32, increasing the humidity of the dust-containing gas. After the dust absorbs the water mist, the specific gravity increases, which is more conducive to separation. At the same time, it can make part of the dust agglomerate into larger particles, which is conducive to capture and removal.

[0061] like Figure 4 As shown, optionally, the first dust collector 5 includes a housing 51;

[0062] A filter material layer 52 is provided in the upper part of the housing 51, and a barrel-shaped partition plate 53 is provided in the lower part;

[0063] An air intake pipe 54 is also vertically arranged in the shell 51. The air intake pipe 54 passes through the bottom of the shell 51 and extends into the barrel-shaped partition 53.

[0064] The shell 51 has a gas outlet 501 at the top and a discharge port 502 at the bottom.

[0065] In the present application, when in use, the dust-containing gas is input into the barrel-shaped partition 53 from the air inlet pipe 54 and ascends. When the ascending dust-containing gas encounters the filter material layer 52, part of the gas will turn back and descend from the outside of the barrel-shaped partition 53. Since the gas flow rate ejected from the air inlet pipe 54 is high, the pressure in the barrel-shaped partition 53 below the air inlet pipe 54 is reduced, and the dust-containing gas descending from the outside of the barrel-shaped partition 53 is sucked in and enters the barrel-shaped partition 53 from the lower end of the barrel-shaped partition 53, collides and mixes with the gas ejected from the air inlet pipe 54. The fine dust particles therein will agglomerate into larger particles again during the collision process due to the increase in humidity in the mixer 3. Some of these larger particles will accumulate at the bottom of the first dust collector 5, and some will ascend with the airflow into the filter material layer 52. The filter material in the filter material layer 52 is a spherical filter material of 5 to 8 mm, such as expanded clay, quartz sand, etc. The dust in the ascending dust-laden gas will adhere to the filter material surface due to the interception of the filter material, thereby being separated from the gas. The remaining dust will be discharged from the gas outlet 501 at the top of the first dust collector 5 along with the air flow and enter the second dust collector 6 for further dust removal.

[0066] like Figure 4 As shown, optionally, a stirring rake 55 is further provided in the filter material layer 52 .

[0067] In the present application, a stirring rake 55 is further provided in the filter material layer 52 , and the stirring rake 55 can be used to stir the filter material layer 52 to clean the dust on the filter material.

[0068] like Figure 5 As shown, optionally, the stirring rake 55 includes a rotating shaft 551 connected to the motor, the rotating shaft 551 is connected to a rotating disk 552, and a plurality of rake teeth 553 are connected to the bottom of the rotating disk 552.

[0069] In the present application, when in use, the motor can be started to drive the rake teeth on the turntable 552 to rotate through the rotating shaft 551 to stir the filter material. In this way, the dust adhered to and intercepted on the surface of the filter material can be cleaned off, and the cleaned dust can be discharged through the discharge port 502 at the bottom of the shell 51.

[0070] like Figure 6 As shown, optionally, the second dust collector 6 includes a cylindrical body 61, and the bottom of the cylindrical body 61 is connected to the conical cylinder 62;

[0071] The bottom of the conical cylinder 62 is connected to the material collection bin 63;

[0072] An input port 601 is provided on the side of the cylinder 61;

[0073] The top of the cylinder 61 is closed, and an output port 602 is opened at the center of the top;

[0074] A filter cartridge 64 is disposed in the cylindrical body 61 . One end of the filter cartridge 64 is closed, and the other end is connected to the output port 602 .

[0075] In the present application, the structure of the second dust collector 6 is similar to that of the cyclone separator. When in use, the dust-containing gas discharged from the gas outlet 501 is tangentially input into the second dust collector 6 from the input port 601 (the input port 601 in the present application is a tangential input port) opened on the side of the cylindrical body 61 of the second dust collector 6. The dust-containing gas input into the second dust collector 6 makes a downward spiral circular motion along the inner wall of the second dust collector 6. The dust with a higher specific gravity in the dust-containing gas will move downward along the wall due to centrifugal force, while the air with a lower specific gravity in the dust-containing gas will turn back upward when it moves to the bottom of the conical cylinder 62, and move upward from the center. After further filtering the fine dust entrained in the gas through the filter cylinder 64, it is discharged from the output port. The dust moving downward along the wall eventually falls into the collection bin 63 for temporary storage. A fan can also be connected to the output port 602 to increase the flow rate of the dust-containing gas, thereby improving the separation effect.

[0076] A dust removal device for refractory material production, the use process of which is as follows:

[0077] When in use, the fan 2 and the axial flow fan 131 in the exhaust hood 13 are turned on to extract the production workshop. The fan 2 can extract the corresponding production equipment 11 through the air collecting hood 122 on the exhaust branch pipe 121 to reduce the dust scattering during production. The dust-containing gas sucked by the fan 2 and the axial flow fan 131 is input into the mixer 3 and mixed with the mist water supplied by the ultrasonic atomization chamber 7 to increase the humidity.

[0078] When mixing in the mixer 3, the dust-containing gas enters from the inner tube 311 of the drainage tube 31 and is transported to the mixing tube 32. Because the flow of the dust-containing gas will cause the pressure near the outlet of the drainage tube 31 to decrease, the atomized water in the ultrasonic atomization chamber 7 is drawn into the space between the outer tube 312 and the inner tube 311, and is transported to the mixing tube 32 together with the dust-containing gas. Since the blowing of the airflow will drive the axial flow impeller 33 to rotate, the mixing of the dust-containing gas and the mist water can be promoted. The dust-containing gas and the mist water are mixed in the mixing tube 32 to increase the humidity of the dust-containing gas. The specific gravity of the dust increases after absorbing the water mist, which is more conducive to separation. At the same time, part of the dust can be agglomerated into larger particles, which is conducive to capture and removal.

[0079] After the dust-laden gas and mist water are mixed in the mixer 3, they enter the settling chamber 4 for sedimentation. Since the specific gravity of the dust increases after being mixed with the mist water, when it enters the settling chamber 4, the cross-section through which the gas flows is reduced and the flow rate is reduced. The dust particles with a larger specific gravity and agglomerated in the dust-laden gas will fall to the bottom of the settling chamber 4 and be separated from the gas. The dust that cannot be separated in the settling chamber 4 enters the first dust collector 5 with the airflow for separation.

[0080] The dust-laden gas is input into the barrel-shaped partition 53 from the air inlet pipe 54 and moves upward. When the upward dust-laden gas encounters the filter material layer 52, part of the gas will turn back and move downward from the outside of the barrel-shaped partition 53. Since the gas flow rate ejected from the air inlet pipe 54 is high, the pressure in the barrel-shaped partition 53 below the air inlet pipe 54 is reduced, and the dust-laden gas moving downward from the outside of the barrel-shaped partition 53 is sucked in and enters the barrel-shaped partition 53 from the lower end of the barrel-shaped partition 53, where it collides and mixes with the gas ejected from the air inlet pipe 54. The fine dust particles therein have increased humidity in the mixer 3, and will agglomerate into larger particles during the collision process. Some of these larger particles will accumulate at the bottom of the first dust collector 5, and some will move upward with the airflow into the filter material layer 52. The filter material in the filter material layer 52 is a spherical filter material of 5 to 8 mm, such as expanded clay, quartz sand, etc. The dust in the ascending dust-laden gas will adhere to the filter material surface due to the interception of the filter material, thereby being separated from the gas. The remaining dust will be discharged from the gas outlet 501 at the top of the first dust collector 5 along with the air flow, and enter the second dust collector 6 for further dust removal.

[0081] The structure of the second dust collector 6 is essentially a cyclone separator. When in use, the dust-containing gas discharged from the gas outlet 501 is tangentially input into the second dust collector 6 from the input port 601 (the input port 601 in this application is a tangential input port) opened on the side of the cylindrical body 61 of the second dust collector 6. The dust-containing gas input into the second dust collector 6 makes a downward spiral circular motion along the inner wall of the second dust collector 6. The dust with a higher specific gravity in the dust-containing gas will move downward along the wall due to centrifugal force, while the air with a lower specific gravity in the dust-containing gas will turn back upward when it moves to the bottom of the conical cylinder 62, and move upward from the center. After the fine dust entrained in the gas is further filtered through the filter cylinder 64, it is discharged from the output port 602. The dust moving downward along the wall of the device eventually falls into the collection bin 63 for temporary storage. A fan can also be connected to the output port 602 to increase the flow rate of the dust-containing gas, thereby improving the separation effect.

[0082] When the filter material in the filter material layer 52 of the first dust collector 5 needs to be cleaned, the motor can be started to drive the rake teeth on the rotating disk 552 to rotate and stir the filter material through the rotating shaft 551, so that the dust adhering to and intercepted on the surface of the filter material can be cleaned off, and the cleaned dust can be discharged through the discharge port 502 at the bottom of the shell 51. The intercepted and separated dust in this application can also be recycled and transferred to the production workshop for reuse.

[0083] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, ordinary technicians in the field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A dust removal device for refractory material production, characterized in that: It comprises a production workshop (1), a fan (2), a mixer (3), a settling chamber (4), a first dust collector (5) and a second dust collector (6) which are connected in series in sequence; The mixer (3) is also connected to the ultrasonic atomization chamber (7) and the water tank (70) in sequence; The production workshop (1) is provided with a plurality of production equipment (11), and a suction pipe (12) is provided at the top of the production workshop (1), and the suction pipe (12) is connected to the suction end of the fan (2); The main air extraction pipe (12) is connected to a plurality of air collecting hoods (122) in a one-to-one correspondence via a plurality of air extraction branch pipes (121); The gas collecting hood (122) is arranged above the production equipment (11) and corresponds one-to-one to the production equipment (11).

2. The dust removal device for refractory material production according to claim 1, characterized in that: The side wall of the production workshop (1) is also provided with a plurality of exhaust hoods (13), and an axial flow exhaust fan (131) is provided in the exhaust hood (13); The exhaust hood (13) is connected to the dust-containing gas input end of the mixer (3).

3. The dust removal device for refractory material production according to claim 1, characterized in that: The mixer (3) comprises a drainage pipe (31) and a mixing pipe (32) which are connected in sequence; The drainage tube (31) comprises an inner tube (311) and an outer tube (312) which are coaxially arranged; One end of the outer tube (312) is closed and the other end is connected to the mixing tube (32); the inner tube (311) passes through the closed end of the outer tube (312) and extends into the outer tube (312); The outer tube (312) has an opening on one side thereof and is connected to the ultrasonic atomization chamber (7); The inner tube (311) is connected to the exhaust end of the fan (2); An axial flow impeller (33) is provided at one end of the mixing tube (32) close to the drainage tube (31).

4. The dust removal device for refractory material production according to claim 1, characterized in that: The first dust collector (5) comprises a housing (51); The housing (51) is provided with a filter material layer (52) at the upper part and a barrel-shaped partition plate (53) at the lower part; An air intake pipe (54) is also vertically arranged in the shell (51), and the air intake pipe (54) passes through the bottom of the shell (51) and extends into the barrel-shaped partition (53); The shell (51) is provided with a gas outlet (501) at the top and a discharge port (502) at the bottom.

5. The dust removal device for refractory material production according to claim 4, characterized in that: A stirring rake (55) is also provided in the filter material layer (52).

6. The dust removal device for refractory material production according to claim 5, characterized in that: The stirring rake (55) comprises a rotating shaft (551) connected to a motor, the rotating shaft (551) is connected to a rotating disk (552), and a plurality of rake teeth (553) are connected to the bottom of the rotating disk (552).

7. The dust removal device for refractory material production according to any one of claims 1 to 6, characterized in that: The second dust collector (6) comprises a cylindrical body (61), the bottom of which is connected to a conical cylinder (62); The bottom of the conical cylinder (62) is connected to the material collection bin (63); An input port (601) is provided on the side of the cylindrical body (61); The top of the cylindrical body (61) is closed, and an output port (602) is provided at the center of the top; A filter cartridge (64) is disposed in the cylindrical body (61); one end of the filter cartridge (64) is closed, and the other end is connected to the output port (602).

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