Belt conveyor unpowered dust removal material guide groove

Abstract

This utility model discloses a non-powered dust removal guide chute for a belt conveyor, including a dust cover and a non-powered dust removal mechanism. The non-powered dust removal mechanism includes a primary circulating return air device, a secondary circulating pressure relief device, a damping device, an anti-overflow skirt, and a tail sealing device. The dust cover is correspondingly installed on the belt conveyor. The coal drop pipe, the primary circulating return air device, and the secondary circulating pressure relief device are arranged sequentially at intervals and connected to the dust cover. Multiple damping devices extending from top to bottom are arranged sequentially at intervals inside the dust cover. Anti-overflow skirts are provided on the lower ends of opposite sides of the dust cover parallel to the direction of movement of the conveyor belt, and the lower ends of the anti-overflow skirts are tightly attached to the top surface of the conveyor belt. A tail sealing device is provided at the end of the dust cover near the coal drop pipe. The advantages are: point-to-point dust suppression for fugitive pollution sources, reducing coal dust overflow and dust emission, reducing dust pollution in the coal conveying system, thereby achieving clean conveying requirements.

Description

Technical Field

[0001] This utility model relates to the field of dust removal technology, and in particular to a non-powered dust removal guide trough for belt conveyors. Background Technology

[0002] Currently, the raw material coal conveying system (belt conveyor) in chemical plants primarily uses baghouse dust collectors for dust collection. However, the dust collection effect of these collectors is unsatisfactory. Due to the large air volume during coal crusher operation, although the baghouse dust collectors are still in operation, they cannot solve the problem of excessive dust levels. The on-site dust concentration far exceeds the national standard for workplace dust time-weighted average allowable concentration ≤4mg / m³. 3 The standards are insufficient to meet the dust suppression requirements of the coal conveying system; the coal dust problem also affects the occupational health of the personnel on duty. Utility Model Content

[0003] The purpose of this invention is to provide a non-powered dust removal and material guide trough for belt conveyors, thereby solving the aforementioned problems in the prior art.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A non-powered dust removal guide chute for a belt conveyor includes a dust cover and a non-powered dust removal mechanism. The non-powered dust removal mechanism includes a primary circulating return air device, a secondary circulating pressure relief device, a damping device, an anti-overflow skirt, and a tail sealing device. The dust cover is correspondingly installed on the belt conveyor. The coal drop pipe, the primary circulating return air device, and the secondary circulating pressure relief device are sequentially spaced along the direction of movement of the conveyor belt and communicate with the dust cover. Multiple damping devices extending from top to bottom are sequentially spaced along the direction of movement of the conveyor belt inside the dust cover. Anti-overflow skirts are provided at the lower ends of opposite sides of the dust cover parallel to the direction of movement of the conveyor belt, and the lower ends of the anti-overflow skirts are tightly attached to the top surface of the conveyor belt. A tail sealing device is provided at the end of the dust cover near the coal drop pipe.

[0006] Preferably, the damping device includes a plurality of damping curtains arranged sequentially adjacent to each other along a direction perpendicular to the conveyor belt movement direction. The upper end of the damping curtain is fixedly connected to the top inner wall of the dust cover, and the lower end of the damping curtain extends vertically downward.

[0007] Preferably, the dust cover includes side plates, a cover plate, and support legs; the cover plate is horizontally positioned above the conveyor belt along the direction of movement of the conveyor belt, and a vertically downward extending side plate is respectively provided on opposite sides of the cover plate parallel to the direction of movement of the conveyor belt; support legs are connected to the outer side of the side plates, and the lower ends of the support legs are fixedly connected to the frame of the belt conveyor; the anti-overflow skirt is connected to the lower end of the side plate via a skirt clamp, and the upper end of the damping soft curtain is fixedly connected to the lower surface of the cover plate.

[0008] Preferably, each of the side plates has a downwardly extending support plate and a counter-flush adjustment plate installed on the inner side of the connection between the material drop pipe and the dust cover. The counter-flush adjustment plate is connected to the support plate by a spring, and the distance between the two support plates and the distance between the two counter-flush adjustment plates gradually narrows from top to bottom.

[0009] Preferably, a buffer bed is provided below the connection between the material discharge pipe and the dust cover; the lower end of the pallet extends to the top surface of the buffer bed, and the lower end of the counter-flush adjustment plate is located above the buffer bed.

[0010] Preferably, the belt conveyor includes a conveyor belt, a frame, and idler roller groups. Multiple idler roller groups are arranged sequentially and at intervals along the movement direction of the conveyor belt on the frame, and the conveyor belt is correspondingly arranged on the idler roller groups.

[0011] Preferably, the idler group includes trough idlers for carrying the conveyor belt and automatic upper self-aligning idlers and automatic lower self-aligning idlers for correcting the conveyor belt's deviation.

[0012] The beneficial effects of this utility model are: by replacing the original bag filter with a non-powered dust removal mechanism, the high-energy-consuming bag filter can be shut down, the dust collection port of the dust collector can be sealed, and point-to-point dust suppression can be carried out on unorganized pollution sources, reducing coal powder overflow and dust, reducing dust pollution in the coal conveying system, thereby achieving the requirements of clean conveying, ensuring the reliable operation of coal conveying equipment, avoiding excessive dust, and thus protecting the environment and the physical and mental health of employees. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the guide groove in an embodiment of this utility model;

[0014] Figure 2 This is a structural diagram of the guide groove in an embodiment of this utility model;

[0015] Figure 3 This is an embodiment of the present utility model. Figure 2 Sectional views of AA, BB, CC and DD.

[0016] In the diagram: 1. Conveyor belt; 2. Coal chute; 3. Primary circulating return air device; 4. Secondary circulating depressurization device; 5. Dust cover; 6. Damping device; 7. Buffer bed; 8. Anti-overflow skirt; 9. Counter-impact adjustment plate; 10. Pallet. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the scope of the present utility model.

[0018] like Figures 1 to 3 As shown in this embodiment, a non-powered dust removal guide chute for a belt conveyor is provided, including a dust cover 5 and a non-powered dust removal mechanism. The non-powered dust removal mechanism includes a primary circulating return air device 2, a secondary circulating pressure relief device 3, a damping device 6, an anti-overflow skirt 8, and a tail sealing device. The dust cover 5 is correspondingly installed on the belt conveyor. The coal drop pipe 2, the primary circulating return air device 2, and the secondary circulating pressure relief device 3 are arranged sequentially and spaced along the movement direction of the conveyor belt 1 and are connected to the dust cover 5. Multiple damping devices 6 extending from top to bottom are arranged sequentially and spaced along the movement direction of the conveyor belt 1 inside the dust cover 5. Anti-overflow skirts 8 are provided on the lower ends of the opposite sides of the dust cover 5 parallel to the movement direction of the conveyor belt 1, and the lower ends of the anti-overflow skirts 8 are tightly attached to the top surface of the conveyor belt 1. A tail sealing device is provided at the end of the dust cover 5 near the coal drop pipe 2.

[0019] The damping device 6 includes a plurality of damping soft curtains arranged sequentially adjacent to each other along the direction of movement perpendicular to the conveyor belt 1. The upper end of the damping soft curtain is fixedly connected to the top inner wall of the dust cover 5, and the lower end of the damping soft curtain extends vertically downward.

[0020] During coal transportation, the material enters the dust cover 5 through the coal drop pipe 2 and falls onto the conveyor belt 1. As the material falls, it disturbs the air, creating an inertial airflow. The material's fall through the coal drop pipe 2 generates an impact airflow, which, under structural constraints, diffuses along the direction of the conveyor belt 1. The dust-laden airflow is obstructed and rebounds in front of the damping device 6. Passing through the primary circulation return air device 2, the airflow changes direction due to spatial changes, with most of the airflow rebounding into the channel of the primary circulation return air device 2. The difference in positive and negative pressure creates continuous circulation, thus slowing the airflow pressure. The weakened dust-laden gas continues to the damping device 6, passing through a specially designed damping curtain. Through multiple damping devices 6, the airflow gradually decreases. A large amount of dust adheres to the damping curtain, forming clumps. When a certain thickness is reached, the material moving along the conveyor belt pushes against the damping curtain, causing the coal clumps to naturally detach into blocks under the action of gravity and be carried away with the material. During material transportation, the anti-overflow skirt 8 prevents materials and dust from spilling or falling from the conveyor belt 1. The tail sealing device ensures that dust will not overflow from the tail of the feed chute and pollute the environment.

[0021] As the remaining dust-laden air moves forward, it undergoes the same motion as above when passing through the secondary circulation depressurization device 3 and the damping device 6 at the outlet of the guide chute. Its kinetic energy gradually decreases, and the remaining kinetic energy will also be gradually weakened by the damping effect of the damping device 6 installed in the later stage, and will eventually be exhausted at the outlet of the guide chute.

[0022] The non-powered dust collection mechanism cleverly utilizes aerodynamic principles. As material falls, the resulting inertial induced wind is skillfully balanced within the material guide chute. Through a highly efficient primary circulating return air device 2, a secondary circulating pressure relief device 3, and a damping device 6, dust is effectively suppressed and falls back onto the conveyor belt 1, where it is transported away with the material, thus achieving true dust-free material transport. Furthermore, multi-path airflow circulation is fully utilized, allowing dust energy to gradually dissipate. Simultaneously, multiple damping curtains further suppress dust dispersion. These diverse dust collection methods work synergistically to achieve excellent dust removal results.

[0023] In this embodiment, the dust cover 5 includes a side plate, a cover plate, and support legs; the cover plate is horizontally positioned above the conveyor belt 1 along the direction of movement of the conveyor belt 1, and a vertically downward extending side plate is provided on each of the opposite sides of the cover plate parallel to the direction of movement of the conveyor belt 1; support legs are connected to the outer side of the side plate, and the lower end of the support leg is fixedly connected to the frame of the belt conveyor; the anti-overflow skirt 8 is connected to the lower end of the side plate via a skirt clamp, and the upper end of the damping soft curtain is fixedly connected to the lower surface of the cover plate.

[0024] In this embodiment, each of the side plates is equipped with a downwardly extending support plate 10 and a counter-flush adjustment plate 9 at the connection between the material drop pipe and the dust cover 5. The counter-flush adjustment plate 9 is connected to the support plate 10 by a spring. The distance between the two support plates 10 and the distance between the two counter-flush adjustment plates 9 gradually narrows from top to bottom.

[0025] A buffer bed 7 is provided below the connection between the material drop pipe and the dust cover 5; the lower end of the pallet 10 extends to the top surface of the buffer bed 7, and the lower end of the counter-flush adjustment plate 9 is located above the buffer bed 7.

[0026] The pallet 10 guides and restricts the material in the coal chute 2, allowing it to fall smoothly onto the buffer bed 7 without skewing or spillage. The counter-flushing adjustment plate 9 cushions the material, preventing damage to the pallet 10 from a large amount of falling material.

[0027] In this embodiment, the belt conveyor includes a conveyor belt 1, a frame, and idler roller groups. Multiple idler roller groups are sequentially and spaced apart along the movement direction of the conveyor belt 1, and the conveyor belt 1 is correspondingly mounted on the idler roller groups. Each idler roller group includes trough-shaped idlers for supporting the conveyor belt 1 and automatic upper and lower self-aligning idlers for correcting the conveyor belt 1's alignment.

[0028] In this embodiment, the devices or mechanisms not described in detail are implemented using existing technologies.

[0029] By adopting the above-disclosed technical solution of this utility model, the following beneficial effects are obtained:

[0030] This utility model provides a non-powered dust collection chute for belt conveyors. By replacing the original bag filter with a non-powered dust collection mechanism, the high-energy-consuming bag filter can be shut down, and the dust collection port of the dust collector can be closed. This allows for point-to-point dust suppression targeting fugitive pollution sources, reducing coal dust spillage and dust generation, and minimizing dust pollution in the coal conveying system. This achieves clean conveying requirements, ensures reliable operation of coal conveying equipment, avoids excessive dust levels, and protects the environment and the health of employees.

[0031] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A belt conveyor non-powered dust removal feed chute, characterized by: The system includes a dust cover and a non-powered dust removal mechanism. The non-powered dust removal mechanism includes a primary circulating air return device, a secondary circulating pressure relief device, a damping device, an anti-overflow skirt, and a tail sealing device. The dust cover is installed on the belt conveyor. The coal drop pipe, the primary circulating air return device, and the secondary circulating pressure relief device are arranged sequentially and at intervals along the direction of the conveyor belt and are connected to the dust cover. Inside the dust cover, multiple damping devices extending from top to bottom are arranged sequentially and at intervals along the direction of the conveyor belt. Anti-overflow skirts are provided on the lower ends of the opposite sides of the dust cover parallel to the direction of the conveyor belt, and the lower ends of the anti-overflow skirts are tightly attached to the top surface of the conveyor belt. A tail sealing device is provided at the end of the dust cover near the coal drop pipe.

2. Belt conveyor non-powered dust removal feed chute according to claim 1, characterized in that: The damping device includes a plurality of damping curtains arranged sequentially adjacent to each other along a direction perpendicular to the movement direction of the conveyor belt. The upper end of the damping curtain is fixedly connected to the top inner wall of the dust cover, and the lower end of the damping curtain extends vertically downward.

3. Belt conveyor non-powered dust removal feed chute according to claim 2, characterized in that: The dust cover includes side plates, a cover plate, and support legs; the cover plate is horizontally positioned above the conveyor belt along the direction of its movement, and a vertically extending side plate is provided on each of the opposite sides of the cover plate parallel to the direction of the conveyor belt's movement; support legs are connected to the outer side of the side plates, and the lower ends of the support legs are fixedly connected to the frame of the belt conveyor; the anti-overflow skirt is connected to the lower end of the side plate via a skirt clamp, and the upper end of the damping soft curtain is fixedly connected to the lower surface of the cover plate.

4. The belt conveyor non-powered dust removal guide trough according to claim 3, characterized in that: Each of the side plates has a downwardly extending support plate and a counter-flush adjustment plate installed on the inner side of the corresponding connection between the material drop pipe and the dust cover. The counter-flush adjustment plate is connected to the support plate by a spring, and the distance between the two support plates and the two counter-flush adjustment plates gradually narrows from top to bottom.

5. Belt conveyor non-powered dust removal feed chute according to claim 4, characterized in that: A buffer bed is provided below the connection between the material drop pipe and the dust cover; the lower end of the pallet extends to the top surface of the buffer bed, and the lower end of the counter-flush adjustment plate is located above the buffer bed.

6. Belt conveyor dustless powered feed chute according to any of claims 1 to 5, characterized in that: The belt conveyor includes a conveyor belt, a frame, and idler roller groups. Multiple idler roller groups are arranged sequentially and at intervals along the movement direction of the conveyor belt on the frame, and the conveyor belt is correspondingly arranged on the idler roller groups.

7. Belt conveyor non-powered dust removal feed chute according to claim 6, characterized in that: The idler assembly includes trough idlers for carrying the conveyor belt and automatic upper self-aligning idlers and automatic lower self-aligning idlers for correcting the conveyor belt's alignment.

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