Dustproof device for conveying belt

Abstract

The dustproof device for the conveying belt comprises a conveying belt body, a plurality of first supporting assemblies and a plurality of second supporting assemblies are symmetrically connected to the top of the conveying belt body, and cavities are formed in the first supporting assemblies and the second supporting assemblies. A first dust cover is arranged between the first supporting assembly and the second supporting assembly, and a U-shaped structure with a downward opening is formed by the first supporting assembly, the second supporting assembly and the first dust cover. Meanwhile, first tensioning parts capable of winding and releasing the first dust cover are arranged at the two ends of the first dust cover, and then the distance between the first supporting assembly and the second supporting assembly is shortened or increased by releasing or winding the first dust cover, so that the conveying belt is suitable for conveying belt bodies with different widths; the dustproof device solves the problems that an existing first dustproof cover and an existing second dustproof cover cannot adapt to conveying belts with different widths after being machined and formed, and the application range of the dustproof device is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of conveyor belts, in particular to a dust-proof device for a conveyor belt. Background Technique

[0002] Conveyor belts are widely used conveying equipment in agriculture, industrial and mining enterprises, and transportation, and can convey various solid blocks, powdered materials or finished products; however, when conveying powdered coal materials, due to inevitable vibrations and other factors during conveyor belt transportation, dust is often generated. Therefore, a dust-proof device is usually installed when conveying such materials.

[0003] In the Chinese utility model patent with the publication number CN219636455U, a belt conveyor sealing and dust-proof device is disclosed. Through the mutual cooperation of a plurality of first dust-proof covers and second dust-proof covers, and installing their bottoms on the frame of the conveyor belt, an arched cover is formed above the conveyor belt above the transported materials, thereby reducing dust. However, both ends of the first dust-proof cover and the second dust-proof cover are distributed on the frame, and the middle part bulges upward to form an arch, so that the first dust-proof cover and the second dust-proof cover cannot adapt to conveyor belts of different widths after being processed and formed, resulting in the need to customize or purchase dust-proof devices of corresponding sizes when selecting dust-proof covers for the conveyor belt, reducing the applicable range of the dust-proof device. Content of the Utility Model

[0004] The purpose of the utility model is to make up for the deficiencies of the prior art and provide a dust-proof device for a conveyor belt.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A dust-proof device for a conveyor belt, including a conveyor belt main body, a plurality of first support components and second support components are symmetrically connected to the top of the conveyor belt main body. Cavities are respectively opened inside the first support components and the second support components. A first dust-proof cover is arranged between the first support components and the second support components, and both ends of the first dust-proof cover respectively extend into the cavities. A U-shaped structure with an opening downward is formed by the first support components, the second support components and the first dust-proof cover. Tensioning components are arranged at both ends of the first dust-proof cover to wind or release the first dust-proof cover.

[0007] A first sealing component with an adjustable length is arranged on the top of the first dust-proof cover. A plurality of first sealing components are provided, and the plurality of first sealing components are respectively arranged at the gaps between adjacent first dust-proof covers. The gaps between adjacent first dust-proof covers are sealed by the first sealing components. One end of the first sealing component is connected to the first support component; the other end of the first sealing component is connected to the second support component.

[0008] Furthermore, both the first support assembly and the second support assembly include a first winding drum. The bottoms of the two first winding drums are detachably connected to the top of the conveyor belt body. The tops of the two first winding drums are each connected to a support rod with adjustable height, and the tops of the two support rods are each connected to an arc-shaped plate;

[0009] Wherein, the first tensioning assembly is installed inside the first winding drum, and one end of the first dust cover inside the first winding drum of the first support assembly extends to the outside, and sequentially passes through the arc-shaped plates of the first support assembly and the second support assembly, and extends into the first winding drum of the second support assembly;

[0010] A second sealing assembly is arranged on one side of the first dust cover. The second sealing assembly is distributed at the gap between two adjacent first dust covers, and the second sealing assembly is located between the arc-shaped plate and the first winding drum, and seals the gap between two adjacent first dust covers through the second sealing assembly.

[0011] Furthermore, a clamping groove is formed on one side of the arc-shaped plate, and a protrusion is formed on the other side of the arc-shaped plate, and the protrusion matches the clamping groove, so that the protrusion of one of the adjacent arc-shaped plates is inserted into the clamping groove of the corresponding other arc-shaped plate.

[0012] Furthermore, the first sealing assembly includes a second dust cover. The bottom of the second dust cover is in contact with the top of the first dust cover. Second winding drums are respectively arranged at both ends of the second dust cover. Second tensioning assemblies are connected inside the two second winding drums respectively, and the two second tensioning assemblies are respectively connected to both ends of the second dust cover;

[0013] A second sealing column is arranged on one side of the arc-shaped plate. One side surface of the second sealing column is in contact with one side of the first dust cover. The width between two adjacent first dust covers is the same as the sum of the widths of the two second sealing columns. The top of the second sealing column is clamped with the bottom of the second winding drum.

[0014] Furthermore, the second sealing assembly includes a support seat. A first sealing column is connected to the bottom of the support seat. The bottom of the first sealing column is inserted into the first winding drum. The sum of the widths of two adjacent first sealing columns and the wall thickness at the outlet of two adjacent first winding drums is the same as the distance between two adjacent first dust covers;

[0015] A third take-up reel is provided at the top of the support base. A third tensioning assembly is installed inside the third take-up reel. One side of the third tensioning assembly is connected to a third dust cover. One end of the third dust cover penetrates through the third take-up reel and extends to the outside. This end of the third dust cover is connected to a connecting plate. The connecting plate is connected to the arc-shaped plate, and one side of the third dust cover is in contact with the first dust cover.

[0016] Further, magnetic tapes are provided at the edges of the first dust cover, the second dust cover, and the third dust cover, and the mutually contacting sides of the corresponding magnetic tapes attract each other. The second dust cover and the third dust cover are tightly attached to the surface of the first dust cover by the magnetic force of the magnetic tapes.

[0017] Further, the first tensioning assembly, the second tensioning assembly, and the third tensioning assembly each include a rotating shaft. The rotating shaft is respectively rotatably connected to the corresponding first take-up reel, the second take-up reel, and the third take-up reel. Both ends of the rotating shaft extend to the outside of the corresponding first take-up reel, the second take-up reel, and the third take-up reel, and coil springs are connected to the ends of the rotating shaft. The ends of the coil springs are respectively connected to one side of the corresponding first take-up reel, the second take-up reel, and the third take-up reel;

[0018] The parts of the rotating shaft located inside the first take-up reel, the second take-up reel, and the third take-up reel are respectively connected to the corresponding first dust cover, the second dust cover, and the third dust cover. The coil springs drive the rotating shaft to rotate so that the first dust cover, the second dust cover, and the third dust cover maintain a tensioning effect.

[0019] Further, the support rod is an electric telescopic rod; a height measuring assembly is provided at the initial end of the conveyor belt main body along the material conveying direction for measuring the height of the material conveyed by the conveyor belt main body.

[0020] Compared with the prior art, the dust-proof device for the conveyor belt has the following beneficial effects:

[0021] First, the present utility model forms a U-shaped structure with an opening downward through the first support assembly, the second support assembly, and the first dust cover, and then installs it on the top of the conveyor belt main body to achieve a dust-proof effect. At the same time, first tensioning components for retracting and releasing the first dust cover are provided at both ends of the first dust cover. Then, by releasing or retracting the first dust cover, the distance between the first support assembly and the second support assembly is shortened or increased, so as to adapt to conveyor belt main bodies of different widths, and solve the problem that the existing first dust cover and second dust cover cannot adapt to conveyor belt main bodies of different widths after being processed and formed, reducing the applicable range of the dust-proof device.

[0022] Second, the utility model is provided with a support rod with adjustable height, which is convenient for adjusting the height of the top of the U-shaped structure with a downward opening to adapt to the height of the material. It consists of a first sealing component, a U-shaped structure and a second sealing component. At the same time, the first dust cover, the second dust cover and the third dust cover are all wound through corresponding rotating shafts for easy transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a three-dimensional structural schematic diagram of the utility model;

[0024] Figure 2 is a three-dimensional structural schematic diagram of the first dust cover in the present utility model;

[0025] Figure 3 is a partial exploded view of the utility model;

[0026] Figure 4 is a three-dimensional structural schematic diagram of the first winding drum in the utility model;

[0027] Figure 5 is a cross-sectional view of the third winding drum in the utility model;

[0028] Figure 6 is a three-dimensional structural schematic diagram of the arc plate in the utility model;

[0029] Figure 7 is a three-dimensional structural schematic diagram of the support base in the utility model.

[0030] In the figure: 1, conveyor belt main body; 2, first dust cover; 3, second dust cover; 4, third dust cover; 5, first winding drum; 6, second winding drum; 7, third winding drum; 8, arc plate; 9, support rod; 10, support base; 11, first sealing column; 12, second sealing column; 13, magnetic tape; 14, rotating shaft; 15, torsion spring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0031] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0032] Such as Figures 1-7As shown in the figure, the utility model provides a technical solution: a dust-proof device for a conveyor belt, which includes a conveyor belt main body 1. A number of first support components and second support components are symmetrically connected to the top of the conveyor belt main body 1. Cavities are provided inside the first support components and the second support components. A first dust-proof cover 2 is arranged between the first support components and the second support components, and both ends of the first dust-proof cover 2 extend into the cavities respectively. A U-shaped structure with an opening downward is formed by the first support components, the second support components and the first dust-proof cover 2. First tensioning components capable of winding or releasing the first dust-proof cover 2 are arranged at both ends of the first dust-proof cover 2; A first sealing component with an adjustable length is arranged at the top of the first dust-proof cover 2. A number of first sealing components are provided, and the first sealing components are respectively arranged at the gaps between two adjacent first dust-proof covers 2. The gaps between two adjacent first dust-proof covers 2 are sealed by the first sealing components. One end of the first sealing component is connected to the first support component; The other end of the first sealing component is connected to the second support component.

[0033] During use, the opposite sides of two adjacent first support components are inserted, and the opposite sides of two adjacent second support components are inserted. A U-shaped structure with an opening downward is formed by the first support components, the second support components and the first dust-proof cover 2, and a number of U-shaped structures are sequentially installed above the conveyor belt main body 1. Then, the gaps between two U-shaped structures are blocked by the first sealing components, thereby preventing dust from flying on the conveyor belt main body 1. At the same time, the first tensioning components wind the first dust-proof cover 2 to keep the first dust-proof cover 2 taut, so that when adjusting the width, by releasing or winding part of the first dust-proof cover 2, the width can be adjusted to adapt to conveyor belt main bodies 1 of different widths.

[0034] The first support assembly and the second support assembly both include a first winding drum 5. The bottoms of the two first winding drums 5 are detachably connected to the top of the conveyor belt main body 1. The tops of the two first winding drums 5 are both connected to support rods 9 with adjustable heights. The tops of the two support rods 9 are both connected to arc-shaped plates 8. Among them, the first tensioning assembly is installed inside the first winding drum 5, and one end of the first dust cover 2 inside the first winding drum 5 of the first support assembly extends to the outside, and sequentially passes through the arc-shaped plates 8 of the first support assembly and the second support assembly, and extends to the inside of the first winding drum 5 of the second support assembly. A second sealing assembly is arranged on one side of the first dust cover 2. The second sealing assembly is distributed at the gap between two adjacent first dust covers 2, and the second sealing assembly is located between the arc-shaped plate 8 and the first winding drum 5, and seals the gap between two adjacent first dust covers 2 through the second sealing assembly. When in use, the first dust cover 2 is slidably connected to the arc-shaped plate 8 and the first winding drum 5, which is convenient for winding and releasing the first dust cover 2, thereby adjusting the distance between the two first winding drums 5 and adjusting the height of the arc-shaped plate 8. At the same time, the support rod 9 can adopt a telescopic sleeve structure with self-locking. By adjusting the support rods 9 on both sides up and down, the height of the top of the first dust cover 2 is adjusted to adapt to the height of the material.

[0035] A card slot is formed on one side of the arc-shaped plate 8, and a protrusion is formed on the other side of the arc-shaped plate 8, and the protrusion is matched with the card slot, so that the protrusion of one of the adjacent arc-shaped plates 8 is inserted into the corresponding card slot of the other arc-shaped plate 8. When in use, the arc-shaped plate 8 is arc-shaped and is distributed at the corners where the two sides and the top of the downward-opening U-shaped structure are connected. And two adjacent arc-shaped plates 8 are connected through the corresponding card slots and protrusions, integrating a plurality of arc-shaped plates 8 distributed along the conveyor belt main body 1, which is convenient for adjusting the height and connection stability.

[0036] The first sealing assembly includes a second dust cover 3. The bottom of the second dust cover 3 is in contact with the top of the first dust cover 2. Second winding drums 6 are respectively arranged at both ends of the second dust cover 3. Second tensioning assemblies are connected inside the two second winding drums 6, and the two second tensioning assemblies are respectively connected to both ends of the second dust cover 3. A second sealing column 12 is arranged on one side of the arc-shaped plate 8. One side surface of the second sealing column 12 is in contact with one side of the first dust cover 2. The width between two adjacent first dust covers 2 is the same as the sum of the widths of the two second sealing columns 12. The top of the second sealing column 12 is clamped to the bottom of the second winding drum 6. When in use, the second dust cover 3 is slidably connected to the second winding drum 6, and both ends of the second dust cover 3 are wound and tightened through the second tensioning assemblies and placed inside the two second winding drums 6, and then fixed to the arc-shaped plate 8 through the second winding drum 6. Therefore, when adjusting the width of the dust-proof device, the second dust cover 3 is also pulled and released to adapt to different widths.

[0037] The second sealing assembly includes a support base 10. A first sealing column 11 is connected to the bottom of the support base 10. The bottom of the first sealing column 11 is inserted into the first winding drum 5. The sum of the widths of two adjacent first sealing columns 11 and the wall thickness at the outlets of two adjacent first winding drums 5 is the same as the distance between two adjacent first dust covers 2. A third winding drum 7 is arranged at the top of the support base 10. A third tensioning assembly is installed inside the third winding drum 7. One side of the third tensioning assembly is connected to a third dust cover 4. One end of the third dust cover 4 penetrates through the third winding drum 7 and extends to the outside. This end of the third dust cover 4 is connected to a connecting plate, and the connecting plate is connected to the arc-shaped plate 8. Moreover, one side of the third dust cover 4 is in contact with the first dust cover 2. During use, the bottom of the support base 10 and the third winding drum 7 are detachably connected, and two adjacent support bases 10 are clamped together, which is convenient for forming the support bases 10 into a whole and improving its stability. The third dust cover 4 can be easily released and wound through the third tensioning assembly, and the third dust cover 4 is slidably connected to the third winding drum 7. Therefore, when adjusting the height of the first dust cover 2, the third dust cover 4 is also pulled, thus adapting to different heights.

[0038] Magnetic tapes 13 are arranged at the edges of the first dust cover 2, the second dust cover 3, and the third dust cover 4. And the mutually contacting sides of the corresponding magnetic tapes 13 attract each other. The second dust cover 3 and the third dust cover 4 are tightly attached to the surface of the first dust cover 2 by the magnetic force of the magnetic tapes 13. During use, the magnetic tapes 13 are made of flexible materials, which is convenient for winding and releasing the magnetic tapes 13.

[0039] The first tensioning assembly, the second tensioning assembly, and the third tensioning assembly all include a rotating shaft 14. The rotating shaft 14 is respectively rotatably connected to the corresponding first winding drum 5, second winding drum 6, and third winding drum 7. The two ends of the rotating shaft 14 extend to the outside of the corresponding first winding drum 5, second winding drum 6, and third winding drum 7. And the ends of the rotating shaft 14 are respectively connected to a torsion spring 15. The ends of the torsion spring 15 are respectively connected to one side of the corresponding first winding drum 5, second winding drum 6, and third winding drum 7. The parts of the rotating shaft 14 located inside the first winding drum 5, second winding drum 6, and third winding drum 7 are respectively connected to the corresponding first dust cover 2, second dust cover 3, and third dust cover 4. The torsion spring 15 drives the rotating shaft 14 to rotate to keep the first dust cover 2, the second dust cover 3, and the third dust cover 4 in a tensioned state. During use, the first dust cover 2, the second dust cover 3, and the third dust cover 4 are all flexible dust covers, and flexible sealing gaskets are arranged at the edges, which is convenient for winding, reeling, and releasing. And a cover plate can be arranged on one side of the torsion spring 15. The cover plate is connected to one side of the corresponding first winding drum 5, second winding drum 6, and third winding drum 7 to isolate two adjacent torsion springs 15 and improve the working stability of the torsion spring 15.

[0040] The support rod 9 is an electric telescopic rod; a height measuring component is arranged at the initial end of the conveyor belt main body 1 along the material conveying direction for measuring the height of the material conveyed by the conveyor belt main body 1; during use, the height measuring component can measure by using a U-shaped frame and an infrared laser rangefinder. The infrared laser rangefinder is installed through the U-shaped frame, and the infrared laser rangefinder is used to detect the height of the conveyed material. When the conveyor belt main body 1 is running, after detecting the height, the electric telescopic rod is controlled by a corresponding controller to lower the height of the top of the first dust-proof cover 2 to reduce the gap between the material and the inner wall top of the dust-proof device, limit the air circulation. At the same time, when detecting that the height of the subsequent material decreases, but the material with a relatively high conveying speed of the conveyor belt main body 1 still does not leave the dust-proof device area or within a set time, the height of the first dust-proof cover 2 remains unchanged. And when there is a material with a higher height than the former, the top of the first dust-proof cover 2 is further controlled to rise further, and the time is recalculated for the latter, which is convenient for automatically adjusting the height.

[0041] During use, first, the first winding drum 5 is installed on the frame of the conveyor belt main body 1 in turn by means of screws and the like, and two adjacent arc-shaped plates 8 are inserted. By adjusting the height of the support rod 9, the arc-shaped plate 8 is raised to an appropriate height. Then, the support seats 10 are installed on the corresponding first winding drums 5 in turn, and at the same time, two adjacent support seats 10 are inserted into each other to form a whole. Then, the third winding drum 7 is installed on the upper surfaces of two adjacent support seats 10 in turn and is connected to the two support seats 10 at the same time, so that two first sealing columns 11 on two adjacent support seats 10 are in contact with the upper surface of the conveyor belt main body 1 at the bottom and the lower surface of the third winding drum 7 at the same time, closing the gap between the two first winding drums 5 below the third winding drum 7.

[0042] Then, the third dust-proof cover 4 is pulled upward so that the connecting part at the top of the third dust-proof cover 4 is installed on the upper arc-shaped plate 8. At the same time, the pulled-out third dust-proof cover 4 is magnetically adsorbed to the magnetic belt 13 on the first dust-proof cover 2 through the two magnetic belts 13 on itself, so that the third dust-proof cover 4 is tightly adsorbed on the first dust-proof cover 2, closing the gap of the adjacent first dust-proof cover 2 from the arc-shaped plate 8 to the lower first sealing column 11. Then, the second winding drum 6 is installed on the second sealing column 12 on one side of the corresponding arc-shaped plate 8. The second dust-proof cover 3 is magnetically adsorbed to the magnetic belt 13 on the first dust-proof cover 2 through the magnetic belt 13 on itself, so that the second dust-proof cover 3 is adsorbed on the first dust-proof cover 2, closing the gap between the adjacent first dust-proof covers 2 between the two second sealing columns 12. The first dust-proof cover 2, the second dust-proof cover 3, the third dust-proof cover 4, and the arc-shaped plate 8, the first sealing column 11, and the second sealing column 12 form a U-shaped cover with an opening downward for sealing, covering above the conveyor belt main body 1 to achieve a dust-proof effect.

[0043] Among them, both ends of the first dust cover 2 are respectively connected to the first tensioning components in the first winding drum 5, and the first tensioning components in the first winding drum 5 pull to keep the first dust cover 2 taut; the top of the third dust cover 4 is fixed, and the lower part is pulled and kept taut by the second tensioning component; both ends of the upper second dust cover 3 are respectively connected to the third tensioning components in the second winding drum 6 to keep the second dust cover 3 taut. At the same time, when adjusting the width of the U-shaped cover according to the width of the conveyor belt main body 1, only the first winding drum 5 needs to be fixed, so that the corresponding rotating shaft 14 rotates, releasing a certain length of the first dust cover 2, and at the same time releasing the corresponding length of the second dust cover 3. Then, when the height needs to be adjusted, by raising the arc-shaped plate 8, the same first dust cover 2 is released to the outside again, and at the same time releasing an appropriate length of the third dust cover 4, thus adapting to different heights and widths, so as to adapt to the widths of different conveyor belt main bodies 1 and the heights of materials.

Claims

1. A dust prevention device for a conveyor belt, comprising a conveyor belt body (1), characterized in that: A plurality of first support components and second support components are symmetrically connected at the top of the conveyor belt body (1), a cavity is provided inside the first support component and the second support component, a first dust cover (2) is provided between the first support component and the second support component, and both ends of the first dust cover (2) extend into the cavity respectively, a U-shaped structure with an opening downward is formed by the first support component, the second support component and the first dust cover (2), and both ends of the first dust cover (2) are provided with a first tensioning component that can roll up or release the first dust cover (2); A first sealing component with adjustable length is arranged at the top of the first dust cover (2), and a plurality of the first sealing components are arranged, and the plurality of the first sealing components are respectively arranged at the gaps between two adjacent first dust covers (2), and the gap between the adjacent first dust covers (2) is sealed by the first sealing component, one end of the first sealing component is connected to the first supporting component; and the other end of the first sealing component is connected to the second supporting component.

2. The dust-proof device for a conveyor belt according to claim 1, characterized in that: The first support assembly and the second support assembly both comprise a first winding drum (5), the bottoms of the two first winding drums (5) are detachably connected to the top of the conveyor belt body (1), the tops of the two first winding drums (5) are both connected to a support rod (9) with adjustable height, and the tops of the two support rods (9) are both connected to an arc plate (8); The first tensioning assembly is installed inside the first winding drum (5), and the first dust cover (2) extends from one end inside the first winding drum (5) of the first supporting assembly to the outside, and passes through the arc plates (8) of the first supporting assembly and the second supporting assembly in sequence, and extends to the inside of the first winding drum (5) of the second supporting assembly; A second sealing component is provided on one side of the first dust cover (2), and the second sealing component is distributed at the gap between two adjacent first dust covers (2). The second sealing component is located between the arc plate (8) and the first winding drum (5), and the gap between the two adjacent first dust covers (2) is sealed by the second sealing component.

3. The dust-proof device for a conveyor belt according to claim 2, characterized in that: A slot is provided on one side of the arc-shaped plate (8), and a protrusion is provided on the other side of the arc-shaped plate (8), and the protrusion matches the slot, so that the protrusion of one of the adjacent arc-shaped plates (8) can be plugged into the slot of the corresponding other arc-shaped plate (8).

4. The dust-proof device for a conveyor belt according to claim 3, characterized in that: The first sealing assembly comprises a second dust cover (3), the bottom of the second dust cover (3) is in contact with the top of the first dust cover (2), the two ends of the second dust cover (3) are respectively provided with second winding drums (6), the interiors of the two second winding drums (6) are both connected with second tensioning assemblies, and the two second tensioning assemblies are respectively connected to the two ends of the second dust cover (3); A second sealing column (12) is provided on one side of the arc plate (8), a side surface of the second sealing column (12) is in contact with one side of the first dust cover (2), the width between two adjacent first dust covers (2) is the same as the sum of the widths of the two second sealing columns (12), and the top of the second sealing column (12) is clamped with the bottom of the second winding drum (6).

5. The dust-proof device for a conveyor belt according to claim 4, characterized in that: The second sealing assembly comprises a support seat (10), the bottom of the support seat (10) is connected to a first sealing column (11), the bottom of the first sealing column (11) is plugged into the first winding drum (5), and the sum of the width of two adjacent first sealing columns (11) and the wall thickness of two adjacent first winding drums (5) at the outlet is the same as the distance between two adjacent first dust covers (2); A third winding drum (7) is arranged on the top of the support seat (10), a third tensioning assembly is installed inside the third winding drum (7), one side of the third tensioning assembly is connected to a third dust cover (4), one end of the third dust cover (4) passes through the third winding drum (7) and extends to the outside, the end of the third dust cover (4) is connected to a connecting plate, the connecting plate is connected to the arc plate (8), and one side of the third dust cover (4) is in contact with the first dust cover (2).

6. The dust-proof device for a conveyor belt according to claim 5, characterized in that: The first dust cover (2), the second dust cover (3) and the third dust cover (4) are all provided with magnetic strips (13) near their edges, and the sides of the magnetic strips (13) that are in contact with each other attract each other, and the second dust cover (3) and the third dust cover (4) are tightly attached to the surface of the first dust cover (2) by the magnetic force of the magnetic strips (13).

7. The dust-proof device for a conveyor belt according to claim 6, characterized in that: The first tensioning assembly, the second tensioning assembly and the third tensioning assembly all comprise a rotating shaft (14), the rotating shaft (14) being rotatably connected to the corresponding first winding drum (5), the second winding drum (6) and the third winding drum (7), respectively, both ends of the rotating shaft (14) extending to the outside of the corresponding first winding drum (5), the second winding drum (6) and the third winding drum (7), and the ends of the rotating shaft (14) are connected to coil springs (15), and the ends of the coil springs (15) are respectively connected to one side of the corresponding first winding drum (5), the second winding drum (6) and the third winding drum (7); The rotating shaft (14) located inside the first winding drum (5), the second winding drum (6) and the third winding drum (7) are respectively connected to the corresponding first dust cover (2), the second dust cover (3) and the third dust cover (4), and the rotating shaft (14) is driven to rotate by a coil spring (15) to maintain the tension of the first dust cover (2), the second dust cover (3) and the third dust cover (4).

8. The dust-proof device for a conveyor belt according to claim 2, characterized in that: The support rod (9) is an electric telescopic rod; and a height measuring component is provided at the initial end of the conveyor belt body (1) along the material conveying direction, for measuring the height of the material conveyed by the conveyor belt body (1).

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