Dust removal device

Abstract

The application provides a dust removal device, which comprises a shell, a backflow pipe and a first dust removal assembly. The shell has a material falling pipe and a cover body. The cover body has a dustproof cavity extending along the conveying direction of the material. The cover body is used for covering the upper part of the vibrating channel. The dustproof cavity has oppositely arranged inlet and outlet ends. The material falling pipe has an inlet. The material falling pipe is arranged at the inlet end of the cover body and communicates with the dustproof cavity. The backflow pipe is arranged along the extension direction of the material falling pipe. One end of the backflow pipe communicates with the middle part of the material falling pipe, and the other end of the backflow pipe communicates with the dustproof cavity. The first dust removal assembly is arranged in the backflow pipe and is used for dust removal treatment of the fluid in the backflow pipe. The technical scheme provided by the application can solve the problem of poor dust removal effect of the vibrating screen in the vibrating separation process in the prior art.

Description

Technical Field

[0001] The present invention relates to the technical field of dust removal, and in particular to a dust removal device. Background Art

[0002] Coal is my country's primary energy source. Coal mined from open-pit and underground mines must be washed and sorted in coal preparation plants before further use. Coal is collected from mines and delivered to the coal yard of a coal preparation plant via conveyor belts or other transport equipment. The coal is then crushed and pulverized by jaw crushers, cone crushers, and other equipment to a particle size suitable for subsequent processing. Heavy media separation, flotation, and gravity separation processes are then used to remove impurities such as gangue and dirt, improving the coal's purity. Vibrating screens are then used to separate the coal according to particle size and density, yielding coal products of varying specifications and qualities.

[0003] The vibrating screen process of coal separation produces a large amount of fine dust. This dust permeates the coal preparation plant, endangering the health of workers and causing increased wear and tear on equipment, reducing its accuracy. Furthermore, some of this fine dust escapes outside the coal preparation plant, polluting the atmosphere and damaging the ecosystem.

[0004] Existing dust reduction methods mainly include spray dust reduction and sealed dust control. Spray dust reduction has low capture efficiency for fine dust, and fine dust often escapes, making it difficult to achieve ideal dust removal results. Sealed dust control uses sealing materials to seal the vibrating screen, keeping the dust inside. During field use, the sealing materials are easily damaged by the vibration of the vibrating screen, ultimately causing large amounts of dust to escape. In addition, large amounts of dust are sealed inside the vibrating screen, posing a risk of coal dust explosion when sparks occur during the screening process. Summary of the Invention

[0005] The present invention provides a dust removal device to solve the problem of poor dust removal effect of a vibrating screen in the prior art during a vibration sorting process.

[0006] The present invention provides a dust removal device, which includes a shell, a return pipe and a first dust removal component. The shell has a drop pipe and a cover body. The cover body has a dustproof cavity. The dustproof cavity extends along the conveying direction of the material. The cover body is used to cover the top of the vibration channel. The dustproof cavity has a relatively set feed end and a discharge end. The drop pipe has a feed port. The drop pipe is arranged at the feed end of the cover body, and the drop pipe is connected to the dustproof cavity; the return pipe is arranged along the extension direction of the drop pipe, one end of the return pipe is connected to the middle part of the drop pipe, and the other end of the return pipe is connected to the dustproof cavity; the first dust removal component is arranged in the return pipe, and the first dust removal component is used to perform dust removal treatment on the fluid in the return pipe.

[0007] Furthermore, the first dust removal assembly includes an injection assembly, a collection unit, and a first filter. The injection assembly is used to inject adsorption liquid into the return pipe; the collection unit is provided on the return pipe and located below the injection assembly, and is used to collect the adsorption liquid; and the first filter is provided at one end of the return pipe near the dustproof cavity.

[0008] Furthermore, the outer side wall of the reflux pipe is arranged on the fixing frame, an injection port is arranged on the side wall of the reflux pipe, the injection assembly is arranged on the fixing frame, and the injection port of the injection assembly is connected to the injection port.

[0009] Furthermore, a mounting port is provided on the side wall of the return pipe, and the collecting part is detachably provided at the mounting port. The collecting part has a collecting groove, and the extension direction of the collecting groove is adapted to the shape of the side wall above the mounting port. The vertical projection of the side wall above the mounting port is located in the collecting groove.

[0010] Furthermore, the first dust removal component also includes a liquid level sensor and an alarm. The alarm is electrically connected to the liquid level sensor. The liquid level sensor is used to detect the liquid level in the collection part. The alarm is arranged on the outside of the reflux pipe.

[0011] Furthermore, the first dust removal component also includes an adhesive part, which is arranged in the return pipe and is not higher than the collecting part. The adhesive part has a bonding section and a blocking section connected in sequence. The outer diameter of the blocking section is larger than the outer diameter of the bonding section. The bonding section is located in the middle of the return pipe. The bonding section has an adhesive layer, which is used to bond impurities. The outer diameter of the blocking section is adapted to the inner diameter of the return pipe. A through hole is provided on the blocking section, and the through hole passes through the blocking section along the extension direction of the return pipe. The first filter is arranged below the blocking section.

[0012] Furthermore, the cover body has a first air outlet, the first air outlet is located downstream of the return pipe, and the first air outlet is connected to the dustproof cavity. The dust removal device also includes: a second dust removal component, which is arranged at the first air outlet, and the second dust removal component is used to eliminate dust discharged from the first air outlet.

[0013] Furthermore, the second dust removal assembly includes a frame, a filter membrane, and a filter baffle. The frame is fixed to the cover body, is provided with an air outlet, and has a flow channel, one end of which is connected to the first air outlet, and the other end of which is connected to the air outlet; the filter membrane is wrapped around the outer periphery of the frame; and the filter baffle is swingably disposed in the flow channel, is used to filter dust, has one end of the filter baffle hinged to the frame, and the other end of the filter baffle is tilted downward.

[0014] Furthermore, the flow channel has multiple filter chambers along the height direction, each filter chamber has an air outlet, and each filter chamber is provided with a filter baffle. The filtering accuracy of the filter baffles in the multiple filter chambers gradually increases in the direction away from the dustproof cavity.

[0015] Further, the cover is provided on the cover body, the second air outlet is arranged close to the discharging end, and the dust removal device further comprises a dust collecting cover, a filter cylinder and a fan. The dust collecting cover is arranged at the second air outlet, the dust collecting cover has oppositely arranged first and second ends, the first end is communicated with the second air outlet, and the flow area of the dust collecting cover gradually decreases from the first end to the second end; the filter cylinder is communicated with the second end of the dust collecting cover at one end, and the filter cylinder is used for filtering dust in the gas; and the fan is communicated with the other end of the filter cylinder.

[0016] The technical scheme of the present application can effectively prevent dust overflow by covering the vibration channel with the cover on the shell to form a sealed chamber with the vibrating screen. The circulation of the circulating pipe can form a circulating air flow from the dropping pipe to the sealed chamber to the circulating pipe and back to the dropping pipe, which can reduce the falling speed and reduce the dust generated by the falling material. The first dust removal assembly can remove dust from the circulating pipe to prevent dust from the circulating pipe. Through the above arrangement, the dust generated during the vibration and separation process of the vibrating screen can be effectively prevented from overflowing, and the dust can be prevented from being scattered into the environment, polluting the environment and harming the health of the operators. The first dust removal assembly can achieve good dust removal effect on the dust in the circulating pipe. BRIEF DESCRIPTION OF DRAWINGS

[0017] The drawings accompanying the specification of this application form a part thereof, serve to provide further understanding of the present application, and together with the description of the application, serve to explain the present application. In the drawings:

[0018] Figure 1 A structure schematic view of a dust removal device according to an embodiment of the present application is shown;

[0019] Figure 2 A partial exploded view of a circulating pipe according to an embodiment of the present application is shown;

[0020] Figure 3 A structure schematic view of a circulating pipe according to an embodiment of the present application is shown;

[0021] Figure 4 A structure schematic view of a bonding member according to an embodiment of the present application is shown;

[0022] Figure 5 A structure schematic view of a second dust removal assembly according to an embodiment of the present application is shown.

[0023] Among the above drawings, the following reference signs are included:

[0024] 10, shell;

[0025] 11, dropping pipe;

[0026] 12. Cover body; 121. Dustproof chamber;

[0027] 20. Return pipe; 21. Fixing bracket; 22. Mounting port;

[0028] 30. First dust removal assembly;

[0029] 31. Injection components;

[0030] 32. Collection unit; 321. Collection tank;

[0031] 33. First filter;

[0032] 34. Liquid level sensor;

[0033] 35. Alarm;

[0034] 36. Adhesive member; 361. Adhesive section; 362. Blocking section; 3621. Through hole;

[0035] 40. Second dust removal assembly;

[0036] 41. Frame;

[0037] 42. Filter membrane;

[0038] 43. Filter baffle;

[0039] 50. Dust hood;

[0040] 51. Filter cartridge;

[0041] 52. Fan;

[0042] 53. First end;

[0043] 54. The second end. DETAILED DESCRIPTION

[0044] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0045] like Figure 1As shown, an embodiment of the present invention provides a dust removal device, which includes: a shell 10, a return pipe 20 and a first dust removal component 30. The shell 10 has a drop pipe 11 and a cover body 12. The cover body 12 has a dustproof cavity 121. The dustproof cavity 121 extends along the conveying direction of the material. The cover body 12 is used to cover the top of the vibration channel. The dustproof cavity 121 has a relatively set feed end and a discharge end. The drop pipe 11 has a feed port. The drop pipe 11 is arranged at the feed end of the cover body 12, and the drop pipe 11 is connected to the dustproof cavity 121; the return pipe 20 is arranged along the extension direction of the drop pipe 11, one end of the return pipe 20 is connected to the middle part of the drop pipe 11, and the other end of the return pipe 20 is connected to the dustproof cavity 121; the first dust removal component 30 is arranged in the return pipe 20, and the first dust removal component 30 is used to remove dust from the fluid in the return pipe 20.

[0046] By applying the technical solution of the present invention, by covering the cover body 12 on the shell 10 above the vibration channel so that the vibrating screen forms a sealed chamber, dust can be effectively prevented from overflowing. The reflux effect of the return pipe 20 is used to form a circulating airflow from the drop pipe 11 to the sealed chamber to the return pipe 20 and then back to the drop pipe 11. The circulating airflow can reduce the speed of the falling material, thereby reducing part of the dust generated by the falling material. The first dust removal component 30 can remove dust from the fluid in the return pipe 20 to prevent dust in the return pipe 20. Through the above-mentioned arrangement, the dust generated by the vibrating screen during the vibration sorting process can be effectively prevented from overflowing, and the dust can be prevented from being scattered into the environment, polluting the environment, and endangering the health of the operator. Moreover, the first dust removal component 30 can achieve a better dust removal effect on the dust in the return pipe.

[0047] like Figure 2 As shown, the first dust removal assembly 30 includes an injection assembly 31, a collection portion 32, and a first filter 33. The injection assembly 31 is used to inject adsorption liquid into the return pipe 20; the collection portion 32 is provided on the return pipe 20 and is located below the injection assembly 31. The collection portion 32 is used to collect the adsorption liquid; the first filter 33 is provided at one end of the return pipe 20 near the dustproof cavity 121. Through the above arrangement, the injection assembly 31 injects the adsorption liquid into the return pipe 20, and the adsorption liquid evenly overflows along the inner wall of the return pipe 20, thereby increasing the contact area between the adsorption liquid and the dust, and can more effectively capture and fix the dust. Using the adsorption liquid for dust removal can reduce energy consumption and the use of complex equipment.

[0048] Among them, the collecting part 32 can collect the adsorption liquid that adsorbs dust in time, which can ensure the freshness of the adsorption liquid and maintain its efficient adsorption capacity. In addition, the collected adsorption liquid can be processed centrally, which simplifies the maintenance and processing process and reduces operating costs.

[0049] Specifically, if Figure 3As shown, the first filter 33 is arranged at one end of the return pipe 20 close to the dustproof cavity 121, and small holes are evenly distributed on the first filter 33. The diameter of the small holes is 1 mm, which can prevent larger particles of dust from entering the return pipe 20.

[0050] like Figure 2 As shown, the outer wall of the return pipe 20 is mounted on a mounting bracket 21. An injection port is provided on the side wall of the return pipe 20. An injection assembly 31 is mounted on the mounting bracket 21, and the injection port of the injection assembly 31 is connected to the injection port. This arrangement enables the injection assembly 31 to inject the adsorption liquid into the inner wall of the return pipe 20 through the injection port on the side wall of the return pipe 20.

[0051] In other embodiments of the present application, an annular groove can be set on the inner wall of the return pipe 20 corresponding to the injection port, and multiple small holes are set at the bottom of the annular groove. The injection component 31 injects the adsorption liquid into the annular groove from the injection port, and then overflows evenly from the small holes at the bottom of the annular groove, covering the inner wall of the return pipe 20, so as to increase the contact area between the adsorption liquid and the dust and improve the dust removal effect.

[0052] Furthermore, a mounting port 22 is provided on the side wall of the reflux pipe 20, and a collecting portion 32 is detachably provided at the mounting port 22. The collecting portion 32 has a collecting trough 321. The extending direction of the collecting trough 321 matches the shape of the side wall above the mounting port 22, and the vertical projection of the side wall above the mounting port 22 is located within the collecting trough 321. Through the above-mentioned arrangement, the collecting portion 32 is configured to be detachable, which facilitates the cleaning and maintenance of the collecting trough 321. The collecting trough 321 matches the shape of the side wall above the mounting port 22, and the vertical projection of the side wall above the mounting port 22 is located within the collecting trough 321. This ensures that the adsorbed liquid on the side wall above the mounting port 22 flows into the collecting trough 321, making it convenient to collect and clean the adsorbed liquid. In addition, timely removal of adsorbed dust can prevent large amounts of dust from accumulating, thus avoiding explosions caused by dust accumulation.

[0053] In other embodiments of the present application, a handle may be provided on the collecting portion 32 to facilitate operation by the operator.

[0054] The first dust removal assembly 30 further includes a liquid level sensor 34 and an alarm 35. The alarm 35 is electrically connected to the liquid level sensor 34, which is used to detect the liquid level within the collection section 32. The alarm 35 is disposed outside the reflux pipe. With this arrangement, the liquid level sensor 34 can detect whether the liquid level within the collection section 32 has reached a specified height, and the alarm 35 can alert the operator to promptly remove the adsorption liquid within the collection section 32.

[0055] like Figure 4As shown, the first dust removal assembly 30 also includes an adhesive member 36, which is arranged in the return pipe 20. The adhesive member 36 is not higher than the collecting portion 32. The adhesive member 36 has an adhesive section 361 and a blocking section 362 connected in sequence. The outer diameter of the blocking section 362 is larger than the outer diameter of the adhesive section 361. The adhesive section 361 is located in the middle of the return pipe 20. The adhesive section 361 has an adhesive layer, which is used to bond impurities. The outer diameter of the blocking section 362 is adapted to the inner diameter of the return pipe 20. A through hole 3621 is provided on the blocking section 362. The through hole 3621 passes through the blocking section 362 along the extension direction of the return pipe 20. The first filter screen 33 is arranged below the blocking section 362. Through the above arrangement, the adhesive layer on the bonding section 361 is used to adhere to impurities in the return pipe 20 that are not absorbed by the adsorption liquid. The blocking section 362 is evenly distributed with eight through-holes 3621, each with a diameter of 60 mm, to facilitate airflow. The outer diameter of the blocking section 362 is adapted to the inner diameter of the return pipe 20, ensuring that the blocking section 362 is securely attached to the return pipe 20.

[0056] If the adhesive layer on the adhesive section 361 becomes dirty and can no longer absorb impurities, the contaminated layer of the outer layer of the replaceable adhesive layer can be torn off and the outer layer of the adhesive layer can be replaced for continued use.

[0057] Furthermore, the housing 12 has a first air outlet, which is located downstream of the return pipe 20 and communicates with the dustproof chamber 121. The dust removal device also includes a second dust removal assembly 40, which is disposed at the first air outlet and is used to remove dust discharged from the first air outlet. Through this arrangement, the second dust removal assembly 40 removes dust discharged from the first air outlet on the housing 12, preventing large amounts of dust from accumulating in the dustproof chamber 121 and avoiding explosions caused by dust accumulation.

[0058] like Figure 1 and Figure 5 As shown, the second dust removal assembly 40 includes a frame 41, a filter membrane 42, and a filter baffle 43. The frame 41 is fixed to the cover body 12 and is provided with an air outlet. The frame 41 has a circulation channel, one end of which is connected to the first air outlet, and the other end of which is connected to the air outlet. The filter membrane 42 is wrapped around the outer periphery of the frame 41. The filter baffle 43 is swingably arranged within the circulation channel. The filter baffle 43 is used to filter dust. One end of the filter baffle 43 is hinged to the frame 41, and the other end of the filter baffle 43 is tilted downward. Through the above arrangement, the filter baffle 43 can efficiently capture large dust particles in the circulation channel. It also has a simple structure, is easy to maintain and install, and has a low manufacturing cost.

[0059] Specifically, in the embodiment of the present application, filter membrane 42 utilizes a rectangular high-precision filter material membrane. Due to the surface filtration properties of the rectangular high-precision filter material membrane, dust is easily collected and cleaned, helping to reduce maintenance workload and improve the stability of the second dust removal assembly 40. Furthermore, the rectangular high-precision filter material membrane has excellent mechanical properties and a high coating strength, making it more durable and reliable. Furthermore, filter membrane 42 is covered on the outside of frame 41, and an elastic cord can be wrapped around the outside of filter membrane 42 to prevent it from falling off.

[0060] Among them, the filter baffle 43 can increase the probability of dust impact, thereby capturing dust. In addition, a hinge hole is set on the frame 41, and the filter baffle 43 is set on the frame 41 through a pin shaft. A limit block can be set at the hinge hole to allow the filter baffle 43 to rotate at a smaller angle, so that the accumulated dust can be cleaned under the vibration of the filter baffle 43.

[0061] In addition, threaded holes can be opened at the bottom of the frame 41 to connect with the upper shell of the vibrating screen with bolts.

[0062] Furthermore, if Figure 1 As shown, the flow channel has multiple filter chambers along its height, each with an air outlet. Each filter chamber is equipped with a filter baffle, and the filtration accuracy of the filter baffles in the multiple filter chambers gradually increases as they move away from the dustproof cavity. Through this arrangement, the filtration accuracy of the filter baffles in the filter chambers gradually increases as they move away from the dustproof cavity, thereby providing a larger dust holding space while capturing more dust. Furthermore, smaller dust particles are more easily captured as they move away from the dustproof cavity, thereby improving the dust removal effect.

[0063] The housing 12 is provided with a second air outlet, which is located near the discharge end. The dust removal device also includes a dust hood 50, a filter cartridge 51, and a fan 52. The dust hood 50 is located at the second air outlet and has a first end 53 and a second end 54 that are oppositely disposed. The first end 53 is connected to the second air outlet, and the flow area of ​​the dust hood 50 gradually decreases from the first end 53 to the second end 54. One end of the filter cartridge 51 is connected to the second end 54 of the dust hood 50, and the filter cartridge 51 is used to filter dust from the gas. The fan 52 is connected to the other end of the filter cartridge 51. Through the above arrangement, the fan 52 provides airflow power for the dust hood 50 and the filter cartridge 51, allowing more dust to pass through the dust hood 50 and reach the filter cartridge 51, where it is filtered by the filter cartridge 51, thereby improving the filtration efficiency of the filter cartridge 51.

[0064] Among them, the flow area of ​​the dust hood 50 gradually decreases from the first end 53 to the second end 54, which can enable the airflow to enter the dust hood 50 more smoothly. This smoother air supply method can save energy, reduce the operating power of the fan 52, and more effectively capture dust, thereby improving dust collection efficiency.

[0065] Specifically, the connection between one end of the filter cartridge 51 and the second end 54 of the dust collecting cover 50 and the connection between the other end of the filter cartridge 51 and the fan 52 are both communicated through a hose.

[0066] Furthermore, a pleated filter element is provided within the filter cartridge 51. This significantly increases the filtration area within the same volume, improving dust removal efficiency. Pleated filters are generally highly durable and have a long service life, with minimal maintenance costs. Furthermore, the pleated filter element has a filtration accuracy of 0.1 to 100 μm, further enhancing the dust removal effectiveness of the filter cartridge 51.

[0067] In other embodiments of the present application, a dust curtain can be provided on the vibrating screen to physically intercept larger dust particles. Its surface usually has a certain stickiness, which helps to adhere to the dust. The dust curtain is easy to maintain and replace, and can be conveniently cleaned or replaced to ensure its dust removal effect.

[0068] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0069] Unless otherwise specifically stated, the relative arrangement of the parts and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to actual proportional relationships. The technology, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments can have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, and therefore, once an item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0070] In the description of the present invention, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0071] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0072] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0073] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A dust removal device, characterized in that: The dust removal device comprises: A housing (10) having a drop tube (11) and a cover (12), wherein the cover (12) has a dustproof cavity (121), the dustproof cavity (121) extends along the conveying direction of the material, the cover (12) is used to cover the upper part of the vibration channel, the dustproof cavity (121) has a feed end and a discharge end arranged oppositely, the drop tube (11) has a feed port, the drop tube (11) is arranged at the feed end of the cover (12), and the drop tube (11) is communicated with the dustproof cavity (121); a return pipe (20) arranged along the extending direction of the blanking pipe (11), one end of the return pipe (20) being in communication with the middle portion of the blanking pipe (11), and the other end of the return pipe (20) being in communication with the dustproof cavity (121); a first dust removal component (30) disposed in the return pipe (20), the first dust removal component (30) being used to perform dust removal processing on the fluid in the return pipe (20); The first dust removal component (30) comprises: An injection assembly (31) for injecting adsorption liquid into the reflux pipe (20); a collecting portion (32), arranged on the reflux pipe (20) and located below the injection assembly (31), the collecting portion (32) being used to collect adsorption liquid; A first filter (33) is provided at one end of the return pipe (20) close to the dustproof cavity (121); An adhesive member (36) is provided in the return pipe (20), the adhesive member (36) being no higher than the collecting portion (32), the adhesive member (36) comprising an adhesive section (361) and a blocking section (362) connected in sequence, the outer diameter of the blocking section (362) being larger than the outer diameter of the adhesive section (361), the adhesive section (361) being located in the middle of the return pipe (20), the adhesive section (361) being provided with an adhesive layer, the adhesive layer being used for adhering impurities, the outer diameter of the blocking section (362) being adapted to the inner diameter of the return pipe (20), the blocking section (362) being provided with a through hole (3621), the through hole (3621) penetrating the blocking section (362) along the extension direction of the return pipe (20), and the first filter screen (33) being provided below the blocking section (362).

2. The dust removal device according to claim 1, characterized in that: The outer side wall of the reflux pipe (20) is arranged on a fixing frame (21), an injection port is provided on the side wall of the reflux pipe (20), the injection assembly (31) is arranged on the fixing frame (21), and the injection port of the injection assembly (31) is communicated with the injection port.

3. The dust removal device according to claim 1, characterized in that: A mounting opening (22) is provided on the side wall of the return pipe (20), and the collecting portion (32) is detachably provided at the mounting opening (22). The collecting portion (32) has a collecting groove (321), and the extending direction of the collecting groove (321) is adapted to the shape of the side wall above the mounting opening (22), and the projection of the side wall above the mounting opening (22) in the vertical direction is located within the collecting groove (321).

4. The dust removal device according to claim 1, characterized in that: The first dust removal component (30) further comprises a liquid level sensor (34) and an alarm (35), wherein the alarm (35) is electrically connected to the liquid level sensor (34), the liquid level sensor (34) is used to detect the liquid level in the collecting portion (32), and the alarm (35) is arranged outside the return pipe (20).

5. The dust removal device according to claim 1, characterized in that: The cover body (12) has a first air outlet, the first air outlet is located downstream of the return pipe (20), and the first air outlet is connected to the dustproof cavity (121). The dust removal device further includes: A second dust removal component (40) is arranged at the first air outlet, and the second dust removal component (40) is used to remove dust discharged from the first air outlet.

6. The dust removal device according to claim 5, characterized in that: The second dust removal component (40) comprises: A frame (41) is fixed on the cover (12), an air outlet is provided on the frame (41), and the frame (41) has a circulation channel, one end of the circulation channel is connected to the first air outlet, and the other end of the circulation channel is connected to the air outlet; A filter membrane (42) wrapped around the outer periphery of the frame (41); A filter baffle (43) is swingably arranged in the circulation channel, and the filter baffle (43) is used to filter dust. One end of the filter baffle (43) is hinged to the frame (41), and the other end of the filter baffle (43) is tilted downward.

7. The dust removal device according to claim 6, characterized in that: The circulation channel has a plurality of filter chambers along the height direction, each of the filter chambers has the air outlet, and each of the filter chambers is provided with the filter baffle (43), and the filtering accuracy of the filter baffles (43) in the plurality of filter chambers gradually increases in a direction away from the dustproof cavity (121).

8. The dust removal device according to claim 1, characterized in that: The cover body (12) is provided with a second air outlet, and the second air outlet is provided close to the discharge end. The dust removal device further comprises: a dust collecting hood (50) disposed at the second air outlet, the dust collecting hood (50) having a first end (53) and a second end (54) disposed opposite to each other, the first end (53) being in communication with the second air outlet, and a flow area of ​​the dust collecting hood (50) gradually decreasing in a direction from the first end (53) to the second end (54); a filter cartridge (51), one end of the filter cartridge (51) being in communication with the second end (54) of the dust collecting hood (50), and the filter cartridge (51) being used to filter dust in the gas; The fan (52) is connected to the other end of the filter cartridge (51).

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