Dust overflow prevention type air cushion belt conveyor

Abstract

The utility model relates to the technical field of air cushion belt conveyors, and discloses a dust overflow prevention type air cushion belt conveyor which comprises a conveyor body, the conveyor body is provided with two stages of dust overflow prevention structures in the conveying direction of the conveyor body, the first stage of dust overflow prevention structure is communicated with a feeding port, and the second stage of dust overflow prevention structure is communicated with a discharging port. The inlet end and the outlet end of the first-stage dust overflow prevention structure are communicated and connected through a circulating pipeline; the second-stage dust overflowing prevention structure comprises an air supply gas isolation chamber arranged above the conveyor body, a filtering cavity is formed in the air supply gas isolation chamber and connected with a fan connecting air chamber, and the fan connecting air chamber conveys filtered gas into an air chamber on the conveyor body through a fan; according to the air cushion belt conveyor, air supply self-circulation can be achieved, the situation of dust overflow of the conveyor can be effectively controlled through the two-stage dust overflow prevention structure, and the dust removal effect is guaranteed.

Description

Technical Field

[0001] This utility model relates to the technical field of air cushion belt conveyors, and in particular to a dust-proof air cushion belt conveyor. Background Technology

[0002] Air cushion belt conveyors are widely used in the bulk material handling industry. However, because they rely primarily on pressurized gas for support and bulk materials generate significant dust, dust collectors are typically used to manage this dust and meet national environmental protection requirements. However, directly using dust collectors can lead to the following problems: 1. Increased energy consumption and costs due to the addition of dust collectors; 2. Incompatibility with high-speed operation of air cushion belt conveyors, resulting in increased dust generation due to induced drafts during transport, leading to increased dust overflow and poor dust removal efficiency. Therefore, there is an urgent need for an air cushion belt conveyor that allows for self-circulation of air supply without requiring additional external power, and effectively controls dust overflow. Utility Model Content

[0003] The purpose of this invention is to provide a dust-proof air cushion belt conveyor that enables the air supply to circulate independently and effectively controls dust overflow from the conveyor through a two-stage dust-proof structure, thus ensuring dust removal efficiency.

[0004] The present invention adopts the following technical solution:

[0005] A dust-proof air cushion belt conveyor includes a conveyor body with a two-stage dust-proof structure along its conveying direction. The first-stage dust-proof structure is connected to the feed inlet, and the inlet and outlet of the first-stage dust-proof structure are connected through a circulation pipe. The second-stage dust-proof structure includes a gas supply isolation chamber located above the conveyor body. The gas supply isolation chamber contains a filter chamber, which is connected to a fan-connected air chamber. The fan-connected air chamber uses a fan to transport the filtered gas to the air chamber on the conveyor body.

[0006] Preferably, the first-stage dust prevention structure includes a material guide trough, the top inlet end of which is connected to the feed inlet and forms a negative pressure zone during material discharge, and the horizontal outlet end of the material guide trough located on the conveyor body forms a positive pressure zone; the positive pressure zone and the negative pressure zone are connected through the circulation pipe.

[0007] Preferably, a damping curtain is provided in the positive pressure zone, and a space for material passage is formed between the damping curtain and the conveyor body.

[0008] Preferably, an inclined guide slope is provided between the guide trough and the conveyor body.

[0009] Preferably, the circulation pipe is arranged at an angle.

[0010] Preferably, a filter structure is provided in the filter chamber.

[0011] Preferably, the filter structure is located above the air supply gas isolation chamber, and the filter chamber is formed in the air supply gas isolation chamber above the filter structure.

[0012] Preferably, the filtration structure is an isolation filter screen installed in the air supply gas isolation chamber.

[0013] Preferably, the isolation filter is a conical filter bag structure, arranged along the length of the air supply gas isolation chamber.

[0014] Preferably, an operating port is provided on the side wall of the air supply gas isolation chamber, and a sealing plate is hinged to the operating port.

[0015] Compared with existing technologies, the beneficial effects of this utility model are as follows: By setting up a first-stage dust-proof structure, the material flow generates induced wind during feeding, creating a negative pressure at the inlet of the first-stage dust-proof structure. As the material flow carries air into the feed inlet, a positive pressure zone is formed at the outlet of the first-stage dust-proof structure. The pressure difference is used to transport the dust in the positive pressure zone to the negative pressure zone via a circulation pipe, where it falls with the material and is conveyed backward, reducing dust generation. When the material flows through the second-stage dust-proof structure, the suction force of the fan draws the dust entering the air supply isolation chamber to the filter chamber for filtration. The filtered airflow is then discharged through the fan-connected air chamber and transported by the fan to the air chamber on the conveyor body, providing air power for the conveyor's operation. This achieves simultaneous dust removal and air supply self-circulation, reducing energy consumption and cost while ensuring dust removal efficiency. The structure is simple and highly practical. Attached Figure Description

[0016] Figure 1 This is a front view of an embodiment of this application;

[0017] Figure 2 This is a three-dimensional schematic diagram of the second-level dustproof structure according to an embodiment of this application. Detailed Implementation

[0018] The present invention will now be described clearly and completely with reference to the accompanying drawings and embodiments:

[0019] like Figures 1 to 2As shown, the present invention discloses a dust-proof air cushion belt conveyor, comprising a conveyor body 1, which is identical to existing air cushion belt conveyors. The conveyor body 1 has a two-stage dust-proof structure along its conveying direction for material dust removal, preventing dust overflow. The first-stage dust-proof structure 2 is connected to the feed inlet, and its inlet and outlet are connected via a circulation pipe 2-1. This allows for dust circulation during operation using pressure difference, combining the dust raised during material conveying with the material falling from the feed inlet for further conveying, thus reducing the amount of overflowing dust. The second-stage dust-proof structure 3 includes a supply air supply system positioned above the conveyor body 1. The isolation chamber 3-1 is connected to the space where the conveyor belt is located on the conveyor body 1. The isolation chamber 3-1 is equipped with a filter chamber 3-2, which is connected to the fan connecting chamber 3-3. A fan 3-4 is installed outside the fan connecting chamber 3-3. The fan 3-4 is connected to the air chamber 4 on the conveyor body 1 through a conveying pipe. The gas filtered by the filter chamber 3-2 enters the fan connecting chamber 3-3 and is transported by the fan 3-4 to the air chamber 4 on the conveyor body 1 to provide air source power for the conveyor belt. While realizing secondary dust removal, the air supply to the conveyor belt is self-circulated, which reduces energy consumption and cost while ensuring dust removal effect.

[0020] Furthermore, the first-stage dust prevention structure 2 includes a guide chute 2-2. The top inlet end of the guide chute 2-2 is connected to the feed inlet. When the material is discharged, the induced wind generated by the material flow will form a negative pressure zone 2-3. As the material carries the airflow into the feed inlet, the horizontal outlet end of the guide chute 2-2 on the conveyor body 1 forms a positive pressure zone 2-4. The positive pressure zone 2-4 and the negative pressure zone 2-3 are connected through a circulation pipe 2-1. Under the action of pressure difference, the dust generated by the falling material during horizontal conveying will enter the feed inlet through the circulation pipe 2-1 and mix with the falling material. The material will fall again. Some of the dust that is not lifted will be conveyed backward with the material, and some of the lifted material will enter the feed inlet again through the circulation pipe 2-1. This cycle can reduce the overflow of dust and achieve the first-stage dust prevention operation.

[0021] In addition, a damping curtain 2-5 is installed in the positive pressure zone 2-4, and a space for material passage is formed between the damping curtain 2-5 and the conveyor body 1. The damping curtain 2-5 is made of several strips of rubber material. The damping curtain 2-5 can intercept the dust raised when the material falls, causing the dust to fall after being obstructed, thus reducing the amount of dust raised. In this embodiment, an inclined guide slope is provided between the guide chute 2-2 and the conveyor body 1 to achieve slow falling of the material, reduce the impact of the material during falling, and thus reduce the amount of dust raised. In addition, the circulation pipe 2-1 is arranged at an angle to facilitate the flow of dust.

[0022] Furthermore, a filter structure is provided within the filter chamber 3-2 for filtering dust. The filter structure is located above the air supply gas isolation chamber 3-1, forming the filter chamber 3-2 within the air supply gas isolation chamber 3-1 above the filter structure. Specifically, the filter structure is an isolation filter screen 5 installed within the air supply gas isolation chamber 3-1. The isolation filter screen 5 is preferably configured as a conical filter bag structure and arranged along the length of the air supply gas isolation chamber 3-1. This optimized configuration of the isolation filter screen 5 increases the filtration area and allows dust to be adsorbed at the bottom tip of the conical filter bag during filtration. As the dust accumulates and its gravity increases, it falls into the material and is transported outwards with the material. Additionally, an operating port is provided on the side wall of the air supply gas isolation chamber 3-1, and a sealing plate 6 is hinged to the operating port for convenient internal inspection and observation, enhancing the practicality of this invention.

Claims

1. A dust-proof air cushion belt conveyor, comprising a conveyor body, characterized in that: The conveyor body is provided with a two-stage dust prevention structure along its conveying direction. The first-stage dust prevention structure is connected to the feed inlet, and the inlet and outlet of the first-stage dust prevention structure are connected through a circulation pipe. The second-stage dust prevention structure includes a gas supply isolation chamber located above the conveyor body. The gas supply isolation chamber is provided with a filter chamber, which is connected to a fan-connected air chamber. The fan-connected air chamber uses a fan to transport the filtered gas to the air chamber on the conveyor body.

2. The dust-proof air cushion belt conveyor according to claim 1, characterized in that: The first-level dust prevention structure includes a material guide trough, the top inlet end of which is connected to the feed inlet and forms a negative pressure zone during material discharge, and the horizontal outlet end of the material guide trough located on the conveyor body forms a positive pressure zone; the positive pressure zone and the negative pressure zone are connected through the circulation pipe.

3. The dust-proof air cushion belt conveyor according to claim 2, characterized in that: A damping curtain is installed in the positive pressure zone, and a space for material passage is formed between the damping curtain and the conveyor body.

4. The dust-proof air cushion belt conveyor according to claim 2, characterized in that: An inclined guide slope is provided between the material guide trough and the conveyor body.

5. The dust-proof air cushion belt conveyor according to claim 2, characterized in that: The circulating pipeline is arranged at an angle.

6. The dust-proof air cushion belt conveyor according to claim 1, characterized in that: The filter chamber is equipped with a filter structure.

7. The dust-proof air cushion belt conveyor according to claim 6, characterized in that: The filter structure is located above the air supply gas isolation chamber, and the filter chamber is formed inside the air supply gas isolation chamber above the filter structure.

8. The dust-proof air cushion belt conveyor according to claim 7, characterized in that: The filtration structure is an isolation filter screen installed in the air supply gas isolation chamber.

9. The dust-proof air cushion belt conveyor according to claim 8, characterized in that: The isolation filter is a conical filter bag structure, arranged along the length of the air supply gas isolation chamber.

10. The dust-proof air cushion belt conveyor according to claim 1, characterized in that: An operating port is provided on the side wall of the air supply gas isolation chamber, and a sealing plate is hinged to the operating port.

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