Air suspension belt conveyor capable of easily removing dust

Abstract

The utility model relates to an air-suspending belt conveyor easy to remove dust, which solves the problem that a feeding section supporting plate and a return section supporting plate of the existing air-suspending belt conveyor are in a groove shape with a low middle part and two high sides, and dust is easy to accumulate to hinder the operation of a conveying belt. The device comprises a rack, a conveying belt for conveying materials from front to back is arranged on the rack, an upper supporting plate is arranged on the upper portion of the rack, the upper supporting plate is in a groove shape with the middle low and the two sides high, a feeding section for supporting the conveying belt is arranged above the upper supporting plate, and an upper air cavity is formed below the upper supporting plate; a lower supporting plate is arranged on the lower portion of the machine frame, the lower supporting plate is in a convex shape with the high middle and the two low sides, the return stroke section of the conveying belt is supported above the lower supporting plate, and a lower air cavity is formed below the lower supporting plate. The return stroke section of the conveying belt is supported by the lower supporting plate with the high middle and the two low sides, and dust is discharged towards the two sides along the cambered surface of the lower supporting plate under the action of an air film flowing from the middle to the two sides on the surface of the lower supporting plate, so that the dust is prevented from being accumulated between the return stroke section of the conveying belt and the lower supporting plate.

Description

Technical Field

[0001] This utility model belongs to the field of conveyor equipment, and relates to a belt conveyor, and particularly to an air suspension belt conveyor that is easy to remove dust. Background Technology

[0002] Conveyor belts are a common type of equipment used for conveying raw materials. They are suitable for conveying powdery, granular, and lumpy materials, and are widely used in industries such as coal, metallurgy, non-ferrous metals, grain, chemicals, ports, and power. Traditional conveyor belts typically use idlers to support the conveyor belt, which then carries the material. The contact between the idlers and the conveyor belt is rolling friction. Due to the limited density of the idlers, the conveyor belt exhibits a wave-like curve at the idler positions and gaps between adjacent idlers, resulting in an overall wavy conveying pattern. This leads to high resistance and high energy consumption. Furthermore, idler conveyor belts require a large number of idlers, resulting in high maintenance costs.

[0003] Compared to idler conveyors, air-suspended belt conveyors have a support plate underneath the conveyor belt. Pressurized gas is introduced between the conveyor belt and the support plate to form an air film, providing "suspended" support for the conveyor belt. This not only reduces frictional resistance and conveyor belt wear but also eliminates the need for complex idler structures, significantly lowering manufacturing and operating costs, and resulting in a lower failure rate. Examples include the air chamber structure of an air-suspended belt conveyor (Chinese Patent Publication No. CN220744698U) and a conveyor with dust-proof exhaust holes (Publication No. CN213355810U), both of which are air-suspended belt conveyors. In traditional air-suspended belt conveyors, the conveyor belt in the upper feeding section and the lower return section are respectively mounted on support plates. Pressurized gas is introduced upwards from below the support plates to form an air film. Both the feeding and return section support plates have a grooved structure that is lower in the middle and higher on the sides. During the conveying process, residues adhering to the working surface of the conveyor belt cannot be completely cleaned. In the return section of the conveyor belt, with the working surface facing down, the adhering material is prone to falling into the return section pallet, increasing the resistance of the return section. In severe cases, it can clog the air holes, resulting in uneven air film and hindering the operation of the conveyor belt. Utility Model Content

[0004] The purpose of this invention is to solve the problem that the existing air suspension belt conveyor's feeding section pallet and return section pallet are both groove-shaped with a low middle and high sides, which easily accumulates dust and hinders the operation of the conveyor belt. The invention provides an air suspension belt conveyor that is easy to remove dust. In response to the problem that the working surface of the return section is facing down and the adhering material shakes off and accumulates on the return section pallet, the return section pallet is improved to reduce dust accumulation.

[0005] The technical solution adopted by this utility model to solve its technical problem is: an easy-to-clean air suspension belt conveyor, including a frame, on which a conveyor belt for transporting materials from front to back is arranged, an upper support plate is arranged on the upper part of the frame, the upper support plate is a groove type with a low middle and high sides, the upper support plate supports the feeding section of the conveyor belt above the upper support plate, and an upper air chamber is arranged below the upper support plate; a lower support plate is arranged on the lower part of the frame, the lower support plate is a convex type with a high middle and low sides, the lower support plate supports the return section of the conveyor belt above the lower support plate, and a lower air chamber is arranged below the lower support plate.

[0006] During the material conveying process in the feeding section, some material inevitably adheres to the working surface of the conveyor belt. In the return section, the working surface carrying the material faces downwards, and the dust adhering to the working surface is shaken off onto the lower support plate. This device uses a convex structure in the lower support plate of the conveyor belt's return section, which is higher in the middle and lower on both sides. The dust shaken off onto the lower support plate can be discharged to both sides. Simultaneously, the airflow blowing upwards from the lower support plate in the lower air chamber forms an air film between the conveyor belt's return section and the lower support plate. This air film flows from the middle to both sides, further carrying the shaken-off dust to both sides, preventing dust accumulation between the conveyor belt's return section and the lower support plate, thus maintaining stable operation over a long period.

[0007] Preferably, one side of the upper air chamber is connected to an upper air intake fan, and one or more rows of air outlets are evenly arranged in the middle of the upper support plate; one side of the lower air chamber is connected to a lower air intake fan, and one or more rows of air outlets are evenly arranged in the middle of the lower support plate. The single row of air outlets is centrally arranged along the front-back direction, and the multiple rows of air outlets are evenly arranged on both sides of the center line in the front-back direction.

[0008] Preferably, the air intake volume of the upper intake fan is greater than that of the lower intake fan. The feeding section of the conveyor belt carries materials, while the return section of the conveyor belt is unloaded. Therefore, the air intake volumes of the upper and lower intake fans differ to achieve better energy utilization.

[0009] Preferably, the upper and lower air intake fans are two independent fans, or the upper and lower air intake fans are the same fan, with airflow split to the upper and lower air chambers via a three-way pipe. The upper and lower air intake fans can be controlled independently, or the airflow distribution can be controlled by a three-way pipe combined with a proportional valve.

[0010] Preferably, a top cover is provided above the upper support plate, and the upper, left, and right sides of the upper support plate are all enclosed structures. The front and rear ends of the upper support plate are exhaust ports. The exhaust of this device is front and rear exhaust, and the feeding section and return section are both closed-loop operations, reducing dust pollution.

[0011] Preferably, the upper and left and right sides above the lower support plate are closed structures, and the front and rear ends above the lower support plate are exhaust ports.

[0012] Preferably, a drive roller is provided at the rear end of the conveyor belt, and a driven roller is provided at the front end. Both the drive roller and the driven roller are waist-shaped rollers with their diameters uniformly decreasing from both ends to the middle. In this device, the upper feeding section of the conveyor belt is concave in the middle, while the lower return section is concave in the middle. Therefore, the drive roller and the driven roller are more suitable to be waist-shaped, thereby creating a correction effect at the positions of the drive roller and the driven roller.

[0013] Preferably, a drive motor is provided on one side of the drive roller, and the output end of the drive motor is connected to the drive roller in sequence through a gearbox and a coupling.

[0014] Preferably, a dust removal scraper is attached to the lower rear side of the drive roller, and the dust removal scraper is attached to the surface of the conveyor belt.

[0015] The return section of the conveyor belt of this utility model is supported by a lower support plate that is high in the middle and low on both sides. Combined with the air film effect of the lower support plate flowing from the middle to both sides, the dust shaken off by the conveyor belt can be discharged to both sides along the arc surface of the lower support plate, avoiding accumulation between the return section of the conveyor belt and the lower support plate, and ensuring the long-term stable operation of the conveyor belt. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings.

[0017] Figure 1 This is a schematic diagram of the cross-sectional structure of a conveyor belt according to this utility model.

[0018] Figure 2 This is a schematic diagram of the rear end structure of a conveyor belt according to this utility model.

[0019] Figure 3 This is a schematic diagram of an active roller structure according to this utility model.

[0020] Figure 4 This is a schematic diagram of a dust removal scraper structure according to the present invention.

[0021] In the diagram: 1. Frame, 2. Upper support plate, 3. Feeding section, 4. Upper air chamber, 5. Upper cover, 6. Upper air intake fan, 7. Lower support plate, 8. Return section, 9. Lower air chamber, 10. Lower air intake fan, 11. Drive roller, 12. Discharge port, 13. Drive motor, 14. Gearbox, 15. Coupling, 16. Dust removal scraper. Detailed Implementation

[0022] The present invention will be further described below with reference to specific embodiments and accompanying drawings.

[0023] Example: An easy-to-clean air-suspended belt conveyor, such as... Figure 1As shown, this device includes a frame 1, on which a conveyor belt for transporting materials from front to back is mounted. An upper support plate 2 is mounted on the upper part of the frame 1. The upper support plate 2 is a recessed shape, lower in the middle and higher on both sides. The upper support plate 2 supports the feeding section 3 of the conveyor belt. An upper air chamber 4 is located below the upper support plate. One side of the upper air chamber is connected to an upper air intake fan 6. One or more rows of air holes are evenly arranged in the middle of the upper support plate. An upper cover 5 is mounted on top of the upper support plate 2. The upper, left, and right sides of the upper support plate are enclosed structures. The front and rear ends of the upper support plate 2 are exhaust ports.

[0024] The frame 1 has a lower support plate 7 at its lower part. The lower support plate is convex in the middle and lower on both sides. The return section 8 of the conveyor belt is supported above the lower support plate, and a lower air chamber 9 is located below the lower support plate. A lower air inlet fan 10 is connected to one side of the lower air chamber 9. One or more rows of air holes are evenly arranged in the middle of the lower support plate. The upper and left and right sides above the lower support plate 7 are closed structures, and the front and rear ends above the lower support plate are exhaust ports.

[0025] In this example, the upper intake fan 6 and the lower intake fan 10 are two independent fans. The power of the upper intake fan 6 is greater than that of the lower intake fan 10, thus achieving a greater air intake volume for the upper intake fan than for the lower intake fan.

[0026] like Figure 2 , 3 As shown, a drive roller 11 is located at the rear end of the conveyor belt, and a driven roller is located at the front end. Both the drive roller 11 and the driven roller are waist-shaped rollers with their diameters uniformly decreasing towards the middle. A material outlet 12 is located below the rear side of the drive roller. A drive motor 13 is located on one side of the drive roller, and the output end of the drive motor is connected to the drive roller sequentially via a gearbox 14 and a coupling 15. Figure 4 As shown, a dust removal scraper 16 is attached to the lower rear side of the drive roller, and the dust removal scraper is attached to the surface of the conveyor belt.

[0027] The lower support plate of the conveyor belt return section adopts a convex structure with a high center and low sides. The dust that falls onto the lower support plate can be discharged to both sides. At the same time, the airflow blown upward from the lower support plate in the lower air chamber forms an air film between the conveyor belt return section and the lower support plate. This air film flows from the center to both sides, which can further carry the fallen dust to both sides, preventing dust from accumulating between the conveyor belt return section and the lower support plate, thereby maintaining stable operation for a long time.

Claims

1. A dust-resistant air-suspended belt conveyor, comprising a frame, wherein a conveyor belt for transporting materials from front to back is disposed on the frame, characterized in that, The upper part of the frame is provided with an upper support plate, which is a groove-shaped plate with a low middle and high sides. The upper support plate supports the feeding section of the conveyor belt, and the upper air chamber is provided below the upper support plate. The lower part of the frame is provided with a lower support plate, which is a convex shape with a high middle and low sides. The lower support plate supports the return section of the conveyor belt, and the lower air chamber is provided below the lower support plate. The rear end of the conveyor belt is equipped with a drive roller, and the front end of the conveyor belt is equipped with a driven roller. Both the drive roller and the driven roller are waist-shaped rollers with their diameters uniformly decreasing from both ends to the middle.

2. The dust-removable air-suspended belt conveyor according to claim 1, characterized in that, One side of the upper air chamber is connected to an upper air intake fan, and one or more air holes are evenly arranged in the middle of the upper support plate; one side of the lower air chamber is connected to a lower air intake fan, and one or more air holes are evenly arranged in the middle of the lower support plate.

3. The dust-removable air-suspended belt conveyor according to claim 2, characterized in that, The air intake volume of the upper air intake fan is greater than that of the lower air intake fan.

4. The dust-removable air-suspended belt conveyor according to claim 2, characterized in that, The upper air intake fan and the lower air intake fan are two independent fans, or the upper air intake fan and the lower air intake fan are the same fan, with a three-way pipe to split the air into the upper air chamber and the lower air chamber.

5. The dust-removable air-suspended belt conveyor according to claim 1, characterized in that, The upper support plate is provided with an upper cover. The upper and left and right sides of the upper support plate are closed structures, and the front and rear ends of the upper support plate are exhaust ports.

6. The easily dust-removable air-suspended belt conveyor according to claim 1, characterized in that, The upper and left and right sides above the lower support plate are closed structures, and the front and rear ends above the lower support plate are exhaust ports.

7. The easily dust-removable air-suspended belt conveyor according to claim 1, characterized in that, A drive motor is provided on one side of the drive roller, and the output end of the drive motor is connected to the drive roller in sequence through a gearbox and a coupling.

8. The dust-removable air-suspended belt conveyor according to claim 1, characterized in that, A dust removal scraper is attached to the lower rear side of the drive roller, and the dust removal scraper is attached to the surface of the conveyor belt.

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