A belt conveyor for screening in coal mines

Abstract

This utility model belongs to the technical field of belt conveyors, specifically a belt conveyor for coal mines capable of screening. It includes two vertical plates distributed front and rear, with a screening mechanism between the two plates. The screening mechanism includes two first rollers, two second rollers, and two third rollers rotatably connected between the two vertical plates. A first conveyor belt with mesh is installed between the outer walls of the two first rollers, and a second conveyor belt with mesh is installed between the outer walls of the two second rollers. In use, large coal particles fall into the interior of the first collection frame and undergo secondary screening via the second conveyor belt. Medium-sized coal particles are blocked at the upper end of the second conveyor belt and then enter the second collection frame. The remaining small coal particles fall through the mesh of the second conveyor belt onto the third conveyor belt, thus achieving simultaneous screening during the conveying process without the need for an additional belt conveyor connection, and requiring a small footprint.

Description

Technical Field

[0001] This utility model belongs to the technical field of belt conveyors, specifically a belt conveyor for coal mines that can perform screening. Background Technology

[0002] In the coal mining and processing industry, material screening is a crucial step in improving coal quality. Traditional screening processes typically utilize the following two types of equipment:

[0003] Vibrating screen: Particle grading is achieved by driving the screen with a vibrating motor. Material conveying and screening separation require an additional belt conveyor connection, and the equipment occupies a large space.

[0004] Ordinary belt conveyors only have the function of transportation and cannot achieve material classification. Screening depends on downstream equipment, and the process is relatively complicated. Summary of the Invention

[0005] This utility model proposes a belt conveyor for coal mines that can perform screening operations simultaneously during the conveying process, without the need for additional belt conveyor connection, and with a small space occupation.

[0006] This utility model is implemented as follows: a belt conveyor for screening in coal mines includes two vertical plates distributed front and rear, and a screening mechanism is arranged between the two vertical plates. The screening mechanism includes two first rollers, two second rollers, and two third rollers rotatably connected between the two vertical plates. A first conveyor belt with mesh is installed between the outer walls of the two first rollers, a second conveyor belt with mesh is installed between the outer walls of the two second rollers, and a third conveyor belt is installed between the outer walls of the two third rollers. The mesh size of the outer walls of the first, second, and third conveyor belts decreases progressively. Four support columns are fitted into the inner walls of both the first and second conveyor belts, and the front and rear ends of the four support columns are rotatably connected to the two vertical plates.

[0007] As a preferred embodiment of the coal mine screening belt conveyor of this utility model, a first motor, a second motor and a third motor are installed at the front end of the vertical plate at the front end, and the output ends of the first motor, the second motor and the third motor are respectively fixedly connected to one of the first roller, the second roller and the third roller.

[0008] As a preferred embodiment of the coal mine screening belt conveyor of this utility model, three baffles are fixedly connected between the two vertical plates, respectively conforming to the upper surfaces of the first conveyor belt, the second conveyor belt and the third conveyor belt.

[0009] As a preferred embodiment of the screening belt conveyor for coal mines according to this utility model, a first collection frame, a second collection frame, and a third collection frame are respectively provided on the left side of the lower end of the first conveyor belt, the second conveyor belt, and the third conveyor belt.

[0010] As a preferred embodiment of the coal mine screening belt conveyor of this utility model, a vibrating motor is installed on the opposite side of each of the two vertical plates.

[0011] In a preferred embodiment of the coal mine screening belt conveyor of this utility model, two horizontal plates are fixedly connected to the opposite sides of the two vertical plates. A spring is fixedly connected to the lower end of each horizontal plate, and a fixing column is fixedly connected to the lower end of each spring.

[0012] As a preferred embodiment of the coal mine screening belt conveyor of this utility model, a controller is installed on the front face of the vertical plate at the front end.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] This invention simultaneously achieves continuous conveying and particle size classification of coal blocks: the coal blocks are initially screened through the mesh on the outer wall of the first conveyor belt, blocking large coal blocks at the upper end of the first conveyor belt. The remaining coal blocks fall through the mesh onto the second conveyor belt below. Large coal blocks fall into the interior of the first collection frame and undergo secondary screening through the second conveyor belt, blocking medium coal blocks at the upper end of the second conveyor belt and then entering the second collection frame. The remaining small coal blocks fall through the mesh of the second conveyor belt onto the third conveyor belt. This achieves simultaneous screening during the conveying process without the need for additional belt conveyor connections, and occupies a small area. Attached Figure Description

[0015] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0016] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0017] Figure 2 This is a frontal cross-sectional view of the present invention.

[0018] Figure 3 This is a partial structural schematic diagram of the present invention;

[0019] Figure 4 This is a schematic diagram of the right-side structure of this utility model.

[0020] In the diagram: 1. Vertical plate; 2. First motor; 3. Second motor; 4. Third motor; 5. First rotating roller; 6. Second rotating roller; 7. First conveyor belt; 8. Third conveyor belt; 9. Second conveyor belt; 10. Third rotating roller; 11. Support column; 12. Baffle; 13. First collection frame; 14. Second collection frame; 15. Third collection frame; 16. Horizontal plate; 17. Spring; 18. Fixed column; 19. Vibrating motor. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and specific embodiments to aid in understanding its content. Unless otherwise specified, the methods used in this invention are conventional methods; the raw materials and apparatus used, unless otherwise specified, are conventional commercially available products.

[0022] Please see Figure 1-4 A belt conveyor for screening in coal mines includes two vertical plates 1 distributed front to back. A screening mechanism is provided between the two vertical plates 1. The screening mechanism includes two first rollers 5, two second rollers 6, and two third rollers 10 rotatably connected between the two vertical plates 1. A first conveyor belt 7 with mesh is installed between the outer walls of the two first rollers 5. A second conveyor belt 9 with mesh is installed between the outer walls of the two second rollers 6. A third conveyor belt 8 is installed between the outer walls of the two third rollers 10. The mesh size of the outer walls of the first conveyor belt 7, the second conveyor belt 9, and the third conveyor belt 8 decreases progressively. Four support columns 11 are attached to the inner walls of the first conveyor belt 7 and the second conveyor belt 9. The front and rear ends of the four support columns 11 are rotatably connected to the two vertical plates 1.

[0023] In this embodiment: the coal blocks to be screened are input from the starting end of the first conveyor belt 7. Driven by the first motor 2, the first rotating roller 5 drives the first conveyor belt 7 to rotate. The coal blocks are initially screened through the mesh on the outer wall of the first conveyor belt 7, blocking large coal blocks at the upper end of the first conveyor belt 7. The remaining coal blocks fall through the mesh onto the second conveyor belt 9 below. The large coal blocks move with the first conveyor belt 7 to the end and fall into the interior of the first collection frame 13. The second motor 3 drives the second rotating roller 6 to make the second conveyor belt 9 perform secondary screening of the coal blocks, blocking medium coal blocks at the upper end of the second conveyor belt 9 and then entering the second collection frame 14. The remaining small coal blocks fall through the mesh of the second conveyor belt 9 onto the third conveyor belt 8. The third motor 4 drives the third rotating roller 10 to drive the third conveyor belt 8 to complete the conveying operation of small coal blocks. The small coal blocks fall into the interior of the third collection frame 15, thus realizing the screening operation during the conveying process without the need for additional belt conveyor connection, and with a small footprint.

[0024] As a technical optimization of this utility model, a first motor 2, a second motor 3 and a third motor 4 are installed at the front end of the front vertical plate 1. The output ends of the first motor 2, the second motor 3 and the third motor 4 are respectively fixedly connected to one of the first rotating rollers 5, the second rotating roller 6 and the third rotating roller 10.

[0025] In this embodiment: the first motor 2 can drive the first rotating roller 5 to rotate, the second motor 3 can drive the second rotating roller 6 to rotate, and the third motor 4 can drive the third rotating roller 10 to rotate.

[0026] As a technical optimization of this utility model, three baffles 12 are fixedly connected between the two vertical plates 1, which respectively fit the upper end surfaces of the first conveyor belt 7, the second conveyor belt 9 and the third conveyor belt 8.

[0027] In this embodiment, by setting baffle 12, large coal particles, medium coal particles and small coal particles can be prevented from sliding off the starting ends of the first conveyor belt 7, the second conveyor belt 9 and the third conveyor belt 8, respectively.

[0028] As a technical optimization of this utility model, a first collection frame 13, a second collection frame 14, and a third collection frame 15 are respectively provided on the left side of the lower end of the first conveyor belt 7, the second conveyor belt 9, and the third conveyor belt 8.

[0029] In this embodiment: the first collection box 13 is used to collect large coal particles, the second collection box 14 is used to collect medium coal particles, and the third collection box 15 is used to collect small coal particles.

[0030] As a technical optimization of this utility model, a vibration motor 19 is installed on the opposite side of each of the two vertical plates 1.

[0031] In this embodiment: the vibration motor 19 is used to drive the screening mechanism to vibrate.

[0032] As a technical optimization of this utility model, two horizontal plates 16 are fixedly connected to the opposite sides of the two vertical plates 1. A spring 17 is fixedly connected to the lower end of the horizontal plate 16, and a fixing post 18 is fixedly connected to the lower end of the spring 17.

[0033] In this embodiment: the spring 17 is used to assist the vibrating motor 19 in causing the screening mechanism to vibrate; the fixed column 18 is used to support the screening mechanism.

[0034] As a technical optimization of this utility model, a controller is installed on the front face of the front vertical plate 1.

[0035] In this embodiment, the controller is electrically connected to the first motor 2, the second motor 3, and the third motor 4, and the controller can control the operation of the first motor 2, the second motor 3, and the third motor 4.

[0036] The working principle and usage process of this utility model are as follows: In use, the coal blocks to be screened are input from the starting end of the first conveyor belt 7. Driven by the first motor 2, the first rotating roller 5 drives the first conveyor belt 7 to rotate. The coal blocks undergo primary screening through the mesh on the outer wall of the first conveyor belt 7, blocking large coal particles at the upper end of the first conveyor belt 7. The remaining coal blocks fall through the mesh onto the second conveyor belt 9 below. Large coal particles move with the first conveyor belt 7 to the end and fall directly into the interior of the first collection frame 13. The second motor 3 drives the second rotating roller 6 to cause the second conveyor belt 9 to perform secondary screening of the coal blocks, blocking medium-sized coal particles. The coal particles are transported from the upper end of the second conveyor belt 9 to the end of the second conveyor belt 9 and then pass through the mesh of the first conveyor belt 7 into the interior of the second collection frame 14. The remaining small coal particles fall through the mesh of the second conveyor belt 9 onto the third conveyor belt 8. The third motor 4 drives the third roller 10 to drive the third conveyor belt 8 to complete the conveying operation of the small coal particles. The small coal particles move to the end of the third conveyor belt 8 and fall through the mesh of the second conveyor belt 9 and the first conveyor belt 7 into the interior of the third collection frame 15. This achieves screening operation during the conveying process without the need for additional belt conveyor connection and occupies a small area.

[0037] However, the above are merely specific embodiments of this utility model and should not be construed as limiting the scope of implementation of this utility model. Therefore, any substitution of equivalent components or equivalent changes and modifications made in accordance with the scope of protection of this utility model should still fall within the scope of the claims of this utility model.

Claims

1. A belt conveyor with screening for coal mines, comprising two vertically arranged front and rear panels (1), characterized in that: A screening mechanism is provided between the two vertical plates (1). The screening mechanism includes two first rollers (5), two second rollers (6), and two third rollers (10) rotatably connected between the two vertical plates (1). A first conveyor belt (7) with mesh is installed between the outer walls of the two first rollers (5). A second conveyor belt (9) with mesh is installed between the outer walls of the two second rollers (6). A third conveyor belt (8) is installed between the outer walls of the two third rollers (10). The mesh size of the outer walls of the first conveyor belt (7), the second conveyor belt (9), and the third conveyor belt (8) gradually decreases. Four support columns (11) are attached to the inner walls of the first conveyor belt (7) and the second conveyor belt (9). The front and rear ends of the four support columns (11) are rotatably connected to the two vertical plates (1).

2. A screening belt conveyor for coal mines according to claim 1, characterized in that: A first motor (2), a second motor (3) and a third motor (4) are installed at the front end of the vertical plate (1). The output ends of the first motor (2), the second motor (3) and the third motor (4) are respectively fixedly connected to one of the first roller (5), the second roller (6) and the third roller (10).

3. A screening belt conveyor for coal mines according to claim 1, characterized in that: Three baffles (12) are fixedly connected between the two vertical plates (1), which are respectively attached to the upper surfaces of the first conveyor belt (7), the second conveyor belt (9) and the third conveyor belt (8).

4. A screening belt conveyor for coal mines according to claim 1, characterized in that: A first collection frame (13), a second collection frame (14), and a third collection frame (15) are respectively provided on the left side of the lower end of the first conveyor belt (7), the second conveyor belt (9), and the third conveyor belt (8).

5. A screening belt conveyor for coal mines according to claim 1, characterized in that: Vibration motors (19) are installed on the opposite sides of the two vertical plates (1).

6. A screening belt conveyor for coal mines according to claim 1, characterized in that: Two horizontal plates (16) are fixedly connected to the opposite sides of the two vertical plates (1). A spring (17) is fixedly connected to the lower end of the horizontal plate (16), and a fixing post (18) is fixedly connected to the lower end of the spring (17).

7. A screening belt conveyor for coal mines according to claim 1, characterized in that: A controller is installed on the front face of the vertical plate (1) at the front end.

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