Dust removal device of conveying mechanism

Abstract

The utility model belongs to the technical field of tobacco conveying, and discloses a dust removal device of a conveying mechanism. The dust removal device of the conveying mechanism comprises a first brush assembly and a second brush assembly, the first brush assembly is rotatably arranged on the machine head frame around the axis of the first brush assembly, the first brush assembly is located below the conveying belt, and the first brush assembly abuts against the conveying belt to clean and brush accumulated dust; the second brush assembly is arranged on the machine head frame, the second brush assembly is located below the conveying belt and located on the downstream of the first brush assembly, the second brush assembly comprises a second brush and a dust removal mechanism, the second brush abuts against the conveying belt to brush accumulated dust, and the dust removal mechanism comprises a collecting box and a negative pressure dust removal piece which communicate with each other. Accumulated dust brushed by the second brush can fall into the collection box, and the negative pressure dust removal part can extract the accumulated dust in the collection box. By means of the dust removal device, dust can be continuously removed, stable operation of the conveying belt is guaranteed, the service life of the conveying mechanism is prolonged, and shutdown overhaul caused by dust accumulation is reduced.

Description

Technical Field

[0001] This utility model relates to the field of tobacco conveying technology, and in particular to a dust removal device for a conveying mechanism. Background Technology

[0002] In the tobacco industry, conveyor systems are typically used to transport tobacco shreds, which are laid directly on a conveyor belt and transported downstream. During the transport process, dust, tobacco fragments, and other debris mixed in with the tobacco shreds may stick to the conveyor belt. Long-term accumulation can affect the normal operation of the conveyor system, thereby impacting the transport of the tobacco shreds.

[0003] Therefore, there is a need to provide a dust removal device for a conveying mechanism to solve the above problems. Utility Model Content

[0004] The purpose of this utility model is to provide a dust removal device for a conveyor mechanism, which continuously removes dust to ensure the stable operation of the conveyor belt, avoids dust accumulation that causes the conveyor belt to slip, run off-track, or wear on the drive shaft, extends the service life of the conveyor mechanism, reduces downtime for maintenance due to dust accumulation, and improves production line efficiency.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A dust removal device for a conveying mechanism, the conveying mechanism including a head frame and a conveyor belt, a drive shaft being disposed on the head frame, the conveyor belt being sleeved on the drive shaft, the drive shaft rotating to drive the conveyor belt to move, the dust removal device for the conveying mechanism comprising:

[0007] The first brush assembly is rotatably mounted on the head frame about its own axis. The first brush assembly is located below the conveyor belt and abuts against the conveyor belt to clean accumulated dust.

[0008] The second brush assembly is mounted on the head frame and is located below the conveyor belt and along the direction of movement of the conveyor belt. The second brush assembly is located downstream of the first brush assembly. The second brush assembly includes a second brush and a dust removal mechanism. The second brush abuts against the conveyor belt to clean the accumulated dust. The dust removal mechanism includes a connected collection box and a negative pressure dust removal component. The accumulated dust cleaned by the second brush can fall into the collection box, and the negative pressure dust removal component can extract the accumulated dust from the collection box.

[0009] Preferably, the collection box includes a first box and a second box connected together. The top opening area of ​​the first box is larger than the bottom opening area of ​​the first box. After the accumulated dust enters the first box through the top opening, it enters the second box through the bottom opening. The negative pressure dust removal component is connected to the second box.

[0010] Preferably, the dust removal mechanism further includes a sensor for detecting the height of dust accumulation inside the second chamber, and the sensor is communicatively connected to the negative pressure dust removal component.

[0011] Preferably, there are multiple sensors, each of which is spaced apart around the outer periphery of the second housing, and the multiple sensors are located at the same height.

[0012] Preferably, the first box is provided with a plurality of inclined partitions to divide the first box into a plurality of collection chambers. Each collection chamber has an inlet and an outlet. The difference between the sum of the areas of the plurality of inlets and the area of ​​the top opening is less than the difference between the sum of the areas of the plurality of outlets and the area of ​​the bottom opening.

[0013] Preferably, the first box and the second box are integrally formed.

[0014] Preferably, the first brush assembly includes:

[0015] The first brush includes a rotating drum and first bristles. The rotating drum extends along the width direction of the conveyor belt, and multiple clusters of the first bristles are spaced apart around the outer periphery of the rotating drum. Both ends of the rotating drum are rotatably mounted on the head frame.

[0016] Preferably, the first brush assembly further includes:

[0017] A transmission belt is tensioned and fitted onto the transmission shaft and the rotating drum, so that the transmission shaft drives the rotating drum to rotate synchronously.

[0018] Preferably, the transmission belt is a toothed belt, which meshes with both the transmission shaft and the rotating drum.

[0019] Preferably, the second brush includes a fixing seat and second bristles, the fixing seat extending along the width direction of the conveyor belt, and multiple clusters of the second bristles being spaced apart on the side of the fixing seat facing the conveyor belt.

[0020] The beneficial effects of this utility model are:

[0021] The dust removal device of this conveyor mechanism includes a first brush assembly and a second brush assembly. The first brush assembly is rotatably mounted on the head frame around its own axis and is located below the conveyor belt. The first brush assembly abuts against the conveyor belt to clean accumulated dust. The second brush assembly is mounted on the head frame and is located below the conveyor belt and downstream of the first brush assembly along the direction of the conveyor belt's movement. The second brush assembly includes a second brush and a dust removal mechanism. The second brush abuts against the conveyor belt to clean accumulated dust. The dust removal mechanism includes a connected collection box and a negative pressure dust removal component. The accumulated dust cleaned by the second brush can fall into the collection box, and the negative pressure dust removal component can extract the accumulated dust from the collection box.

[0022] For ease of description, the upper and lower sections of the conveyor belt are named the upper section and the lower section, respectively. The tobacco is placed on the upper section of the conveyor belt during transport. When the drive shaft drives the conveyor belt, the upper section continuously moves towards the head frame to carry the tobacco downstream of the production line. After reaching the head frame, the tobacco is transported downstream. The upper section then moves under the drive of the drive shaft to switch to the lower section. At this time, the lower section switches to the upper section to take on the responsibility of transporting the tobacco. The lower section then moves towards the first brush assembly and the second brush assembly. The lower belt section continues to move away from the head frame. The first brush assembly comes into contact with the lower belt section and performs a preliminary cleaning of the conveyor belt by rotating itself, removing most of the ash adhering to the lower belt section. This ash will be transported downstream along with the tobacco. After the lower belt section moves to the second brush assembly, the second brush comes into contact with the lower belt section to perform a secondary cleaning of the conveyor belt, which is used to remove the remaining ash and ensure that the surface of the lower belt section is thoroughly clean. The ash cleaned by the second brush falls into the collection box. The negative pressure dust collector generates negative pressure to suck the ash in the collection box to the outside, preventing the ash from accumulating near the head frame or being re-entrained.

[0023] The dual-layer cleaning of the first and second brush assemblies significantly improves the cleaning effect and reduces the risk of long-term dust accumulation on the conveyor belt surface. Both the first and second brush assemblies are located below the conveyor belt, ensuring uninterrupted operation and enabling simultaneous conveyor belt cleaning while transporting tobacco. This eliminates the need for downtime maintenance and allows for real-time dust removal, preventing prolonged dust accumulation and cleaning difficulties. A negative pressure dust collector sucks up the dust cleaned by the second brush, preventing dust accumulation on the head frame or secondary re-entrainment. Both the first and second brush assemblies are mounted on the head frame, requiring minimal modification to the original conveyor structure and facilitating installation. This dust removal device continuously cleans the conveyor belt, ensuring stable operation, preventing slippage, misalignment, or wear on the drive shaft caused by dust accumulation, extending the service life of the conveyor mechanism, reducing downtime for maintenance due to dust accumulation, and improving production line efficiency. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the dust removal device of the conveying mechanism provided by this utility model;

[0025] Figure 2 This is a schematic diagram of the structure of the second brush assembly provided in Embodiment 1 of this utility model;

[0026] Figure 3 This is a cross-sectional view of the collection box provided in Embodiment 1 of this utility model;

[0027] Figure 4 This is a schematic diagram of the structure of the second brush assembly provided in Embodiment 2 of this utility model;

[0028] Figure 5 This is a cross-sectional view of the collection box provided in Embodiment 2 of this utility model;

[0029] Figure 6 This is a schematic diagram of the structure of the first brush assembly provided by this utility model.

[0030] In the picture:

[0031] 100. Conveyor belt; 101. Drive shaft;

[0032] 1. First brush assembly; 11. Rotating drum; 12. First bristles;

[0033] 2. Second brush assembly; 21. Second brush; 211. Fixing base; 212. Second bristles; 22. Dust removal mechanism; 221. First housing; 2211. Top opening; 2212. Bottom opening; 2213. Partition; 2214. Collection chamber; 22141. Inlet; 22142. Outlet; 222. Second housing; 223. Sensor. Detailed Implementation

[0034] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0035] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0036] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0037] In the description of this embodiment, the terms "upper," "lower," "left," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0038] In the tobacco industry, conveyor systems are typically used to transport tobacco shreds, which are laid directly on a conveyor belt and transported downstream. During the transport process, dust, tobacco fragments, and other debris mixed in with the tobacco shreds may stick to the conveyor belt. Long-term accumulation can affect the normal operation of the conveyor system, thereby impacting the transport of the tobacco shreds.

[0039] Among them, such as Figure 1 As shown, the conveying mechanism includes a head frame and a conveyor belt 100. A drive shaft 101 is provided on the head frame, and the conveyor belt 100 is sleeved on the drive shaft 101. The drive shaft 101 rotates to drive the conveyor belt 100 to move.

[0040] Example 1

[0041] To solve the above problems, such as Figure 1 , Figure 2 , Figure 3 and Figure 6As shown, this embodiment provides a dust removal device for a conveying mechanism. This dust removal device includes a first brush assembly 1 and a second brush assembly 2. The first brush assembly 1 is rotatably mounted on the head frame around its own axis and is located below the conveyor belt 100. The first brush assembly 1 abuts against the conveyor belt 100 to clean accumulated dust. The second brush assembly 2 is mounted on the head frame and is located below the conveyor belt 100 and along the direction of movement of the conveyor belt 100. The second brush assembly 2 is located downstream of the first brush assembly 1. The second brush assembly 2 includes a second brush 21 and a dust removal mechanism 22. The second brush 21 abuts against the conveyor belt 100 to clean accumulated dust. The dust removal mechanism 22 includes a connected collection box and a negative pressure dust removal component. The accumulated dust cleaned by the second brush 21 can fall into the collection box, and the negative pressure dust removal component can extract the accumulated dust from the collection box.

[0042] For ease of description, the upper and lower sections of the conveyor belt 100 are named the upper section and the lower section, respectively. When the tobacco is being conveyed, it is placed in the upper section of the conveyor belt 100. When the drive shaft 101 drives the conveyor belt 100 to run, the upper section continuously moves toward the head frame to carry the tobacco downstream of the production line. After reaching the head frame, the tobacco is conveyed downstream. The upper section moves under the drive of the drive shaft 101 to switch to the lower section. At this time, the lower section switches to the upper section to take on the responsibility of transporting the tobacco. The lower section then moves toward the first brush assembly 1 and the second brush assembly 2. The lower belt section continues to move away from the head frame. The first brush assembly 1 comes into contact with the lower belt section and performs a preliminary cleaning of the conveyor belt 100 by rotating itself, removing most of the ash stuck to the lower belt section. This ash will be transported downstream along with the tobacco. After the lower belt section moves to the second brush assembly 2, the second brush 21 comes into contact with the lower belt section to perform a secondary cleaning of the conveyor belt 100, which is used to remove the remaining ash and ensure that the surface of the lower belt section is thoroughly clean. The ash cleaned by the second brush 21 falls into the collection box. The negative pressure dust collector generates negative pressure to suck the ash in the collection box to the outside, preventing the ash from accumulating near the head frame or being re-entrained.

[0043] The double-layer cleaning of the first brush assembly 1 and the second brush assembly 2 significantly improves the cleaning effect and reduces the risk of long-term dust adhesion on the surface of the conveyor belt 100. Both the first brush assembly 1 and the second brush assembly 2 are located below the conveyor belt 100, so they do not affect the normal operation of the conveyor belt 100. This allows for simultaneous conveying of tobacco and cleaning of the conveyor belt 100 without downtime for maintenance, and enables real-time cleaning of accumulated dust, preventing prolonged dust adhesion and subsequent cleaning difficulties. The negative pressure dust collector sucks up the dust cleaned by the second brush 21, preventing dust accumulation on the head frame or secondary re-entrainment. Both the first brush assembly 1 and the second brush assembly 2 are located on the head frame, requiring no major modifications to the original structure of the conveyor mechanism, making installation convenient. This dust removal device continuously cleans dust, ensuring the stable operation of the conveyor belt 100, preventing dust accumulation from causing slippage, misalignment, or wear on the drive shaft 101, extending the service life of the conveyor mechanism, reducing downtime for maintenance due to dust accumulation, and improving production line efficiency.

[0044] Specifically, such as Figure 2 , Figure 3 As shown, the collection box includes a first box 221 and a second box 222 connected together. The area of ​​the top opening 2211 of the first box 221 is larger than the area of ​​the bottom opening 2212 of the first box 221. After the accumulated dust enters the first box 221 through the top opening 2211, it enters the second box 222 through the bottom opening 2212. The negative pressure dust removal component is connected to the second box 222.

[0045] The top opening 2211 has a large area, while the bottom opening 2212 has a small area, so that the first box 221 forms a "funnel-shaped" structure. The dust cleaned by the second brush 21 falls into the first box 221 from the large top opening 2211 and then concentrates towards the small bottom opening 2212, and slides down to the second box 222 through the bottom opening 2212. The second box 222 serves as a temporary storage area for dust and a negative pressure suction channel. The negative pressure dust collector is connected to the second box 222. After the negative pressure dust collector is activated, it forms a stable negative pressure environment through continuous suction, so that the dust is sucked to the outside by the negative pressure dust collector. According to Bernoulli's principle, in horizontal flow, static pressure decreases as flow velocity increases. In the first chamber 221, as dust accumulates from the top opening 2211 to the bottom opening 2212, the flow cross-sectional area decreases, and the airflow velocity increases as the cross-sectional area decreases, resulting in even lower static pressure and thus a stronger adsorption effect. Furthermore, the dust is less likely to settle in the high-speed airflow and is quickly drawn out of the collection box. In addition, the top opening 2211 of the first chamber 221 allows the dust to fall naturally, reducing airflow disturbance when the dust begins to enter the collection box, making it less likely for the dust to fly away. The smaller bottom opening 2212 allows the negative pressure dust collector to form a stronger adsorption effect on the dust, accelerating the extraction of the dust.

[0046] In this embodiment, as Figure 2 As shown, the dust removal mechanism 22 also includes a sensor 223, which is used to detect the height of the accumulated dust inside the second chamber 222. The sensor 223 is communicatively connected to the negative pressure dust collector. After entering the first chamber 221 through the top opening 2211, the accumulated dust falls into the second chamber 222 through the bottom opening 2212. Once the dust accumulates in the second chamber 222 to a level detectable by the sensor 223, the sensor 223 sends a detection signal to the negative pressure dust collector, which then begins to suck up the accumulated dust from the second chamber 222. When the dust height decreases to a level no longer detectable by the sensor 223, the negative pressure dust collector stops working. By incorporating the sensor 223, the negative pressure dust collector is prevented from operating at full load for extended periods, reducing energy consumption and extending its service life without affecting dust extraction.

[0047] Specifically, there are multiple sensors 223, which are spaced apart around the outer periphery of the second housing 222, and all sensors 223 are located at the same height. The dust accumulation height in different areas of the second housing 222 may vary. By setting multiple sensors 223 to cover the circumference of the second housing 222, the dust accumulation height in each area can be monitored. When a single sensor 223 fails, the remaining sensors 223 can still ensure normal monitoring function, ensuring that the negative pressure dust collector can perform suction work normally.

[0048] Specifically, the first housing 221 and the second housing 222 are integrally molded. This integral molding eliminates the need for bolts, welding, or flange connections between traditional separate housings, preventing loosening and cracking at joints due to vibration. The overall structure experiences uniform stress, making it less prone to localized deformation during negative pressure suction or dust accumulation, thus ensuring the stability of the airflow channel within the entire collection box. The integral molding also eliminates seams between the first housing 221 and the second housing 222, fundamentally preventing dust from escaping from the joints. Furthermore, the integral molding process, using a single mold, reduces the need for separate processing, assembly, and quality inspection, lowering production costs and time.

[0049] Specifically, such as Figure 6 As shown, the first brush assembly 1 includes a first brush, which comprises a rotating drum 11 and first bristles 12. The rotating drum 11 extends along the width direction of the conveyor belt 100, and multiple clusters of first bristles 12 are spaced apart around the outer periphery of the rotating drum 11. Both ends of the rotating drum 11 are rotatably mounted on the head frame. The rotating drum 11 extends along the width direction of the conveyor belt 100, and the multiple clusters of first bristles 12 are spaced apart around the outer periphery of the rotating drum 11, ensuring that the first brush can cover the entire width of the conveyor belt 100 and avoid dust accumulation and omission in the edge areas. The clusters of first bristles 12 are arranged in a clustered, spaced manner, which ensures continuous cleaning while avoiding excessive resistance caused by excessively high bristle density. Each cluster of first bristles 12 acts independently, dispersing the cleaning pressure and reducing localized wear.

[0050] In this embodiment, the first brush assembly 1 further includes a transmission belt (not shown in the figure). The transmission belt is tensioned and sleeved on the transmission shaft 101 and the rotating drum 11 so that the transmission shaft 101 drives the rotating drum 11 to rotate synchronously. The transmission shaft 101 directly drives the rotating drum 11 through the transmission belt, eliminating the need for other driving components to drive the rotating drum 11 separately, thus reducing costs. It ensures that the rotational speed of the rotating drum 11 is the same as the linear speed of the conveyor belt 100, so that when the first brush bristles 12 come into contact with the surface of the conveyor belt 100, the relative speed between them approaches zero, avoiding "dragging" or "preceding friction" of the first brush bristles 12 due to speed difference, reducing ineffective wear, and enhancing the peeling force against sticky dust.

[0051] Furthermore, the transmission belt is a toothed belt, which meshes with both the rotating drum 11 and the drive shaft 101. This meshing of the toothed belt with the rotating drum 11 and drive shaft 101 avoids slippage caused by insufficient tension in traditional friction drives, ensuring that the drive shaft 101 can stably drive the rotating drum 11 to rotate. This ensures that the rotational speed of the rotating drum 11 is strictly synchronized with the rotational speed of the drive shaft 101, maintaining zero speed difference contact between the first brush bristles 12 and the surface of the conveyor belt 100, thus preventing wear or incomplete cleaning of the first brush bristles 12 due to speed differences.

[0052] Specifically, such as Figure 2 As shown, the second brush 21 includes a fixed base 211 and second bristles 212. The fixed base 211 extends along the width direction of the conveyor belt 100, and multiple clusters of second bristles 212 are spaced apart on the side of the fixed base 211 facing the conveyor belt 100. The fixed base 211 extends along the width direction of the conveyor belt 100, and the multiple clusters of second bristles 212 are spaced apart on the fixed base 211, ensuring that the second brush 21 can cover the entire width of the conveyor belt 100, avoiding dust accumulation and leakage in the edge areas; the spacing between the multiple clusters of second bristles 212 allows accumulated dust to fall directly into the collection box, reducing suspended particles in the air and ensuring a better workshop environment.

[0053] Example 2

[0054] This embodiment provides a dust removal device for a conveying mechanism, which has a structure that is largely the same as the dust removal device for the conveying mechanism provided in Embodiment 1, except for the specific structure of the collection box.

[0055] In this embodiment, as Figure 4 , Figure 5 As shown, the first box 221 is provided with a plurality of inclined partitions 2213 to divide the first box 221 into a plurality of collection chambers 2214. Each collection chamber 2214 has an inlet 22141 and an outlet 22142. The difference between the sum of the areas of the plurality of inlets 22141 and the area of ​​the top opening 2211 is less than the difference between the sum of the areas of the plurality of outlets 22142 and the area of ​​the bottom opening 2212.

[0056] like Figure 4 , Figure 5 As shown, the first box 221 is divided into multiple collection chambers 2214 by multiple inclined partitions 2213. The difference between the total area of ​​the inlets 22141 of the multiple collection chambers 2214 and the top opening 2211 of the first box 221 is less than the difference between the total area of ​​the outlets 22142 and the bottom opening 2212. That is, when the accumulated dust enters the first box 221 through the inlets 22141 of the multiple collection chambers 2214 and concentrates at the outlets 22142, the cross-sectional area is further reduced, the airflow velocity is further increased, and the static pressure is further reduced, thereby forming a stronger adsorption effect.

[0057] Specifically, such as Figure 4 As shown, in this embodiment, the first housing 221 is provided with ten partitions 2213. The ten partitions 2213 are arranged at intervals and at an incline within the first housing 221 to divide the first housing 221 into six cone-shaped collection chambers 2214. It should be noted that the specific arrangement of the partitions 2213 depends on actual needs. As long as the difference between the sum of the areas of the inlets 22141 of the multiple collection chambers 2214 formed after division and the area of ​​the top opening 2211 is less than the difference between the sum of the areas of the outlets 22142 of the multiple collection chambers 2214 and the area of ​​the bottom opening 2212, this embodiment does not limit this.

[0058] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A dust removal device for a conveying mechanism, the conveying mechanism comprising a head frame and a conveyor belt (100), wherein a drive shaft (101) is disposed on the head frame, the conveyor belt (100) is sleeved on the drive shaft (101), and the drive shaft (101) rotates to drive the conveyor belt (100) to move, characterized in that, The dust removal device of the conveying mechanism includes: The first brush assembly (1) is rotatably mounted on the head frame around its own axis. The first brush assembly (1) is located below the conveyor belt (100). The first brush assembly (1) abuts against the conveyor belt (100) to clean accumulated dust. The second brush assembly (2) is disposed on the head frame. The second brush assembly (2) is located below the conveyor belt (100) and along the direction of movement of the conveyor belt (100). The second brush assembly (2) is located downstream of the first brush assembly (1). The second brush assembly (2) includes a second brush (21) and a dust removal mechanism (22). The second brush (21) abuts against the conveyor belt (100) to clean the accumulated dust. The dust removal mechanism (22) includes a connected collection box and a negative pressure dust removal component. The accumulated dust cleaned by the second brush (21) can fall into the collection box. The negative pressure dust removal component can extract the accumulated dust from the collection box.

2. The dust removal device for the conveying mechanism according to claim 1, characterized in that, The collection box includes a first box (221) and a second box (222) connected together. The area of ​​the top opening (2211) of the first box (221) is larger than the area of ​​the bottom opening (2212) of the first box (221). After the dust enters the first box (221) through the top opening (2211), it enters the second box (222) through the bottom opening (2212). The negative pressure dust removal component is connected to the second box (222).

3. The dust removal device for the conveying mechanism according to claim 2, characterized in that, The dust removal mechanism (22) also includes a sensor (223), which is used to detect the height of dust accumulation inside the second housing (222), and the sensor (223) is communicatively connected to the negative pressure dust removal component.

4. The dust removal device for the conveying mechanism according to claim 3, characterized in that, The number of sensors (223) is multiple, and each sensor (223) is arranged at intervals around the outer periphery of the second housing (222), and the multiple sensors (223) are located at the same height.

5. The dust removal device for the conveying mechanism according to claim 2, characterized in that, The first box (221) is provided with a plurality of inclined partitions (2213) to divide the first box (221) into a plurality of collection chambers (2214). Each collection chamber (2214) has an inlet (22141) and an outlet (22142). The difference between the sum of the areas of the plurality of inlets (22141) and the area of ​​the top opening (2211) is less than the difference between the sum of the areas of the plurality of outlets (22142) and the area of ​​the bottom opening (2212).

6. The dust removal device for the conveying mechanism according to any one of claims 2-5, characterized in that, The first box (221) and the second box (222) are integrally formed.

7. The dust removal device for the conveying mechanism according to any one of claims 1-5, characterized in that, The first brush assembly (1) includes: The first brush includes a rotating drum (11) and first bristles (12). The rotating drum (11) extends along the width direction of the conveyor belt (100). Multiple clusters of the first bristles (12) are spaced around the outer periphery of the rotating drum (11). Both ends of the rotating drum (11) are rotatably mounted on the head frame.

8. The dust removal device for the conveying mechanism according to claim 7, characterized in that, The first brush assembly (1) further includes: A transmission belt is tensioned and sleeved on the transmission shaft (101) and the rotating drum (11) so that the transmission shaft (101) drives the rotating drum (11) to rotate synchronously.

9. The dust removal device for the conveying mechanism according to claim 8, characterized in that, The transmission belt is a toothed belt, which meshes with both the transmission shaft (101) and the rotating drum (11).

10. The dust removal device for the conveying mechanism according to any one of claims 1-5, characterized in that, The second brush (21) includes a fixed seat (211) and second bristles (212). The fixed seat (211) extends along the width direction of the conveyor belt (100), and multiple clusters of the second bristles (212) are spaced apart on the side of the fixed seat (211) facing the conveyor belt (100).

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