Dust removal device

Abstract

The dust removal device comprises a shell, a backflow pipe and a first dust removal assembly, the shell is provided with a material falling pipe and a cover body, the cover body is provided with a dustproof cavity, the dustproof cavity extends in the material conveying direction, the cover body is used for covering the upper portion of a vibration channel, the dustproof cavity is provided with a feeding end and a discharging end which are oppositely arranged, the material falling pipe is provided with a feeding port, and the discharging port is provided with a discharging port. The blanking pipe is arranged at the feeding end of the cover body, and the blanking pipe is communicated with the dustproof cavity; the return pipe is arranged in the extending direction of the blanking pipe, one end of the return pipe is communicated with the middle of the blanking pipe, and the other end of the return pipe is communicated with the dustproof cavity; and the first dust removal assembly is arranged in the return pipe, and the first dust removal assembly is used for conducting dust removal treatment on fluid in the return pipe. By means of the technical scheme, the problem that in the prior art, a vibrating screen is poor in dust removal effect in the vibrating separation process can be solved.

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 the main energy source in my country. Coal mined from open-pit coal mines and underground coal mines must be washed and sorted in coal preparation plants before further use. Coal is collected from mines or coal mines and sent to the coal yard of the coal preparation plant through conveyor belts or other transportation equipment; then the coal is crushed and broken by jaw crushers, cone crushers and other equipment to achieve a particle size suitable for subsequent processing; then heavy medium separation, flotation, gravity separation and other processes are used to remove impurities such as gangue and soil in the coal to improve the purity of the coal; then the vibrating screen is used to sort the coal according to particle size and density to obtain coal products of different specifications and qualities.

[0003] A large amount of fine dust is generated during the vibrating screen separation process. The fine dust fills the coal preparation plant, which not only harms the health of workers, but also aggravates equipment wear and reduces equipment accuracy. In addition, some fine dust escapes to the outside of the coal preparation plant, polluting the atmospheric environment and destroying the ecosystem.

[0004] The existing dust reduction methods mainly include spray dust reduction and sealed dust control. Spray dust reduction has low efficiency in capturing fine dust, and fine dust often escapes, making it difficult to achieve the ideal dust removal effect; sealed dust control uses sealing materials to seal the vibrating screen so that the dust is inside the vibrating screen. During on-site use, the sealing material is easily damaged by the vibration of the vibrating screen, which eventually leads to a large amount of dust overflow. In addition, a large amount of dust is sealed inside the vibrating screen, and there is a risk of coal powder explosion when sparks appear during the vibrating screen screening process. Summary of the invention

[0005] The invention provides a dust removal device to solve the problem that the dust removal effect of the vibrating screen in the prior art is poor during the 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 arranged 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 with the dustproof cavity; the return pipe is arranged along the extension direction of the drop pipe, one end of the return pipe is connected with the middle part of the drop pipe, and the other end of the return pipe is connected with 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 collecting part and a first filter. The injection assembly is used to inject adsorption liquid into the reflux pipe; the collecting part is arranged on the reflux pipe and located below the injection assembly, and the collecting part is used to collect the adsorption liquid; the first filter is arranged at one end of the reflux pipe close to 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, an injection assembly is arranged on the fixing frame, and a liquid injection port of the injection assembly is connected with the injection port.

[0009] Furthermore, an installation port is provided on the side wall of the reflux pipe, and the collecting part is detachably provided at the installation 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 installation port, and the projection of the side wall above the installation port in the vertical direction 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 component, which is arranged in the return pipe. The adhesive component is not higher than the collecting part. The adhesive component 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 is provided with an adhesive layer, and the adhesive layer 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 on the cover, an air outlet is arranged on the frame, and the frame 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; the filter membrane is wrapped around the outer periphery of the frame; the filter baffle is swingably arranged in the circulation channel, the filter baffle is used to filter dust, one end of the filter baffle is hinged to the frame, and the other end of the filter baffle is tilted downward.

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

[0015] Furthermore, a second air outlet is provided on the cover body, and the second air outlet is provided near the discharge end, and the dust removal device also includes a dust hood, a filter cartridge and a fan. The dust hood is provided at the second air outlet, and has a first end and a second end which are relatively provided, and the first end is connected to the second air outlet, and the flow area of ​​the dust hood gradually decreases from the first end to the second end; the filter cartridge, one end of which is connected to the second end of the dust hood, and the filter cartridge is used to filter dust in the gas; and the fan is connected to the other end of the filter cartridge.

[0016] By applying the technical solution of the present invention, by covering the cover body on the shell 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 is used to form a circulating airflow from the drop pipe to the sealed chamber to the return pipe and then back to the drop pipe. 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 can perform dust removal on the fluid in the return pipe to prevent dust in the return pipe. 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. In addition, the first dust removal component can achieve a better dust removal effect on the dust in the return pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0018] Figure 1 A schematic structural diagram of a dust removal device provided in an embodiment of the present invention is shown;

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

[0020] Figure 3 A schematic diagram of the structure of a reflux pipe provided in an embodiment of the present invention is shown;

[0021] Figure 4 A schematic structural diagram of an adhesive member provided according to an embodiment of the present invention is shown;

[0022] Figure 5 A schematic structural diagram of a second dust removal assembly provided according to an embodiment of the present invention is shown.

[0023] The above drawings include the following reference numerals:

[0024] 10. Shell;

[0025] 11. Dropping pipe;

[0026] 12. cover body; 121. dustproof chamber;

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

[0028] 30. A first dust removal component;

[0029] 31. Injection components;

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

[0031] 33. The first filter;

[0032] 34. Liquid level sensor;

[0033] 35. Alarm;

[0034] 36, bonding member; 361, bonding section; 362, blocking section; 3621, through hole;

[0035] 40. A 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 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 described embodiments 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 by no means 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 creative work 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 arranged 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 drop, thereby reducing part of the dust generated by the drop. 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. In addition, 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 component 30 includes an injection component 31, a collecting part 32 and a first filter 33. The injection component 31 is used to inject adsorption liquid into the return pipe 20; the collecting part 32 is arranged on the return pipe 20 and is located below the injection component 31. The collecting part 32 is used to collect adsorption liquid; the first filter 33 is arranged at one end of the return pipe 20 close to the dustproof cavity 121. Through the above arrangement, the injection component 31 injects adsorption liquid into the return pipe 20, and the adsorption liquid evenly overflows along the inner wall of the return pipe 20, which increases the contact area between the adsorption liquid and the dust, can more effectively capture and fix the dust, and use the adsorption liquid for dust removal, which can reduce energy consumption and the use of complex equipment.

[0048] Among them, the collecting part 32 can collect the adsorption liquid for adsorbing 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 the operating cost.

[0049] Specifically, Figure 3As shown, the first filter screen 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 screen 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 reflux pipe 20 is arranged on the fixing frame 21, an injection port is arranged on the side wall of the reflux pipe 20, an injection assembly 31 is arranged on the fixing frame 21, and the injection port of the injection assembly 31 is connected to the injection port. Through the above arrangement, the injection assembly 31 can inject the adsorption liquid into the inner wall of the reflux pipe 20 through the injection port on the side wall of the reflux pipe 20.

[0051] In other embodiments of the present application, an annular groove may be provided on the inner wall of the return pipe 20 corresponding to the injection port, and a plurality of small holes may be provided at the bottom of the annular groove. The injection assembly 31 injects the adsorption liquid into the annular groove from the injection port, and the adsorption liquid 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] Further, 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 groove 321, and the extending direction of the collecting groove 321 is adapted to the shape of the side wall above the mounting port 22, and the projection of the side wall above the mounting port 22 in the vertical direction is located in the collecting groove 321. Through the above arrangement, the collecting portion 32 is arranged to be detachable, so that the collecting groove 321 is convenient for cleaning and maintenance. The collecting groove 321 is adapted to the shape of the side wall above the mounting port 22, and the projection of the side wall above the mounting port 22 in the vertical direction is located in the collecting groove 321, so that the adsorption liquid on the side wall above the mounting port 22 can flow into the collecting groove 321, so that the adsorption liquid can be conveniently collected and cleaned. In addition, timely removal of adsorbed dust can prevent a large amount of dust from accumulating, and avoid explosions due to dust accumulation.

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

[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. The liquid level sensor 34 is used to detect the liquid level in the collection part 32. The alarm 35 is arranged on the outside of the reflux pipe. Through the above arrangement, the liquid level sensor 34 can detect whether the liquid level in the collection part 32 reaches a specified height, and the alarm 35 can remind the operator to clean the adsorption liquid in the collection part 32 in time.

[0055] like Figure 4As shown, the first dust removal component 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 compatible with the inner diameter of the return pipe 20. The blocking section 362 is provided with a through hole 3621, and 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 bonding section 361 has a bonding layer, which is used to bond the impurities in the reflux pipe 20 that are not adsorbed by the adsorption liquid. Eight through holes 3621 are evenly distributed on the blocking section 362. The diameter of the through holes 3621 is 60 mm for airflow circulation. The outer diameter of the blocking section 362 is adapted to the inner diameter of the reflux pipe 20, so that the blocking section 362 is clamped in the reflux 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 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 chamber 121. The dust removal device also includes a second dust removal component 40, which is arranged at the first air outlet and is used to eliminate dust discharged from the first air outlet. Through the above arrangement, the second dust removal component 40 eliminates dust discharged from the first air outlet on the cover body 12, prevents a large amount of dust from accumulating in the dustproof chamber 121, and avoids explosion due to 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 on the cover body 12. The frame 41 is provided with an air outlet. 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. The filter membrane 42 is wrapped around the outer periphery of the frame 41. The filter baffle 43 is swingably arranged in 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 particles of dust in the circulation channel, and its structure is simple, easy to maintain and install, and low in manufacturing cost.

[0059] Specifically, in the embodiment of the present application, the filter membrane 42 is a rectangular high-precision filter material membrane. Due to the surface filtration of the rectangular high-precision filter material membrane, dust is easy to collect and clean, which helps to reduce the maintenance workload and improve the stability of the second dust removal component 40. The rectangular high-precision filter material membrane has good mechanical properties and high film fastness, and is more durable and reliable. In addition, the filter membrane 42 is covered on the outside of the frame 41, and an elastic rope can be wrapped around the outside of the 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 circulation 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, and the filtering accuracy of the filter baffles in the multiple filter chambers gradually increases in the direction away from the dustproof cavity. Through the above arrangement, the filtering accuracy of the filter baffles in the filter chamber gradually increases in the direction away from the dustproof cavity, which can capture more dust while providing a larger dust holding space, and it is easier to capture smaller dust particles in the direction away from the dustproof cavity, thereby improving the dust removal effect.

[0063] The cover body 12 is provided with a second air outlet, and the second air outlet is arranged 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 arranged at the second air outlet, and the dust hood 50 has a first end 53 and a second end 54 arranged opposite to each other. 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 in 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, so that more dust can pass through the dust hood 50 to the filter cartridge 51, and the filter cartridge 51 is filtered, thereby improving the filtering 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 make the airflow enter the dust hood 50 more smoothly. This smoother air supply method can save energy, reduce the operating power of the fan 52, and can more effectively capture dust and improve 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 in the filter cartridge 51, which greatly increases the filtering area under the same volume, improves the dust removal efficiency, and generally has high durability and long service life, and has extremely low maintenance costs. In addition, the filtering accuracy of the pleated filter element used is 0.1 to 100 μm, which can better improve the dust removal effect of the filter cartridge 51.

[0067] In other embodiments of the present application, a dust curtain may be provided on the vibrating screen to physically intercept larger dust particles. The surface of the dust curtain usually has a certain viscosity, which helps to adhere to the dust. The dust curtain is easy to maintain and replace, and the accumulated dust can be easily 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, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0069] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present invention. Meanwhile, 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 exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain 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 is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the 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 devices or elements 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 contours 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 here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. 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 figure. For example, if the device in the accompanying 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. If not 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 above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A dust removal device, characterized in that: The dust removal device comprises: A housing (10) having a material drop pipe (11) and a cover body (12), wherein the cover body (12) has a dustproof cavity (121), wherein the dustproof cavity (121) extends along the conveying direction of the material, wherein the cover body (12) is used to cover the top of the vibration channel, wherein the dustproof cavity (121) has a feed end and a discharge end arranged opposite to each other, wherein the material drop pipe (11) has a feed port, wherein the material drop pipe (11) is arranged at the feed end of the cover body (12), and wherein the material drop pipe (11) is in communication with the dustproof cavity (121); A return pipe (20) is arranged along the extension direction of the blanking pipe (11), one end of the return pipe (20) is connected to the middle part of the blanking pipe (11), and the other end of the return pipe (20) is connected to the dustproof cavity (121); A first dust removal component (30) is arranged in the return pipe (20), and the first dust removal component (30) is used to perform dust removal on the fluid in the return pipe (20).

2. The dust removal device according to claim 1, characterized in that: The first dust removal component (30) comprises: An injection assembly (31) for injecting adsorption liquid into the reflux pipe (20); A collecting portion (32) is arranged on the reflux pipe (20) and is located below the injection assembly (31), and the collecting portion (32) is used to collect the adsorption liquid; The first filter screen (33) is arranged at one end of the return pipe (20) close to the dustproof cavity (121).

3. The dust removal device according to claim 2, characterized in that: The outer side wall of the reflux pipe (20) is arranged on a fixing frame (21), an injection port is arranged 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 connected to the injection port.

4. The dust removal device according to claim 2, characterized in that: The side wall of the reflux pipe (20) is provided with a mounting opening (22), the collecting portion (32) is detachably arranged at the mounting opening (22), the collecting portion (32) has a collecting groove (321), the extension 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).

5. The dust removal device according to claim 2, characterized in that: The first dust removal component (30) further comprises a liquid level sensor (34) and an alarm (35); 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 on the outside of the return pipe (20).

6. The dust removal device according to claim 2, characterized in that: The first dust removal component (30) also includes: An adhesive member (36) is arranged in the return pipe (20), the adhesive member (36) is arranged no higher than the collecting portion (32), the adhesive member (36) comprises 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, the adhesive layer is used to adhere impurities, the outer diameter of the blocking section (362) is matched with the inner diameter of the return pipe (20), the blocking section (362) is provided with a through hole (3621), the through hole (3621) penetrates the blocking section (362) along the extension direction of the return pipe (20), and the first filter screen (33) is arranged below the blocking section (362).

7. 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 communicated with the dustproof cavity (121). The dust removal device also 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.

8. The dust removal device according to claim 7, characterized in that: The second dust removal component (40) comprises: A frame (41) is fixed on the cover body (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.

9. The dust removal device according to claim 8, 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, 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 the direction away from the dustproof cavity (121).

10. 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 arranged close to the discharge end. The dust removal device also includes: A dust collecting hood (50) is arranged at the second air outlet, the dust collecting hood (50) has a first end (53) and a second end (54) arranged opposite to each other, the first end (53) is connected to the second air outlet, and the flow area of ​​the dust collecting hood (50) gradually decreases in the 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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