Screening device for in-situ mineralization of coal gangue

Abstract

The utility model discloses a screening device for in-situ mineralization of coal gangue. The screening device comprises a fixed bottom plate, a buffer assembly, a screening frame, a vibration assembly, a screening assembly, a transmission bin and a transmission assembly. The buffering assembly is fixedly connected to the top end of the fixed bottom plate, the screening frame is fixedly connected to the top end of the buffering assembly, the vibration assembly is located between the fixed bottom plate and the screening frame, the screening assembly is located on the inner side of the screening frame, the transmission bins are located on the inner side of the bin wall of the screening frame, and the transmission assemblies are located on the two sides of the screening assembly. Compared with the prior art, the screening device has the advantages that rolling shaft screening and screen screening are combined, the screening efficiency is higher, the handling capacity is larger, and the service life is longer.

Description

Technical Field

[0001] The utility model relates to the technical field of coal screening, in particular to a screening device for in-situ mineralization of coal gangue. Background Technique

[0002] Coal gangue is a solid waste discharged during the coal mining process and coal washing process. It is a dark gray rock with a relatively low carbon content and harder than coal, which is associated with coal during the coal forming process. It includes the heading gangue during the roadway driving process, the gangue mined from the roof, floor and interlayers during the mining process, and the washed gangue picked out during the coal washing process. Due to the existence of gangue, coal preparation is an essential technological step in the coal production process. The raw coal without being selected causes serious environmental pollution after combustion and may cause problems such as acid rain. Therefore, before the utilization of coal, it is necessary to accurately separate coal and gangue. The manual separation operation mode not only has a large labor intensity, low production efficiency, but also the gangue picking rate is directly affected by human factors such as the physical fitness of the gangue discharging production operators, resulting in a very common phenomenon of misselection and missed selection. At the same time, the machine sorting equipment is complex and the process is complex; while the sorting devices using X-ray and dual-energy rays will harm the physical health of the operators and are not conducive to long-term sorting operations, which is a huge test for human factors. Screening machinery is a mechanical equipment that uses actions such as rotation, vibration, reciprocation, and shaking to separate various raw materials and various primary products through a sieve mesh into several grades according to the particle size of the materials, or to remove moisture, impurities, etc. therein, and then to carry out the next step of processing and improving the product quality.

[0003] In the prior art, the patent number CN216631504U discloses a screening device for coal gangue production and processing, including a screening frame, a feeding device, a vibrating screening device, and a dust collector. An upper-stage trough frame is fixedly installed inside the outer frame at the upper end, a lower-stage trough frame is fixedly installed below the upper-stage trough frame, a feeding trough is fixedly installed above one end of the outer frame, an inner rod is rotatably installed inside the feeding trough, impact plates are fixedly welded at equal intervals on the outer surface of the inner rod, a guiding convex block is fixedly welded on one inner wall of the feeding trough, an upper-stage sieve mesh is rotatably installed on the upper surface of the upper-stage trough frame, a linkage rod is rotatably installed on the lower surface of the upper-stage trough frame, cams are fixedly installed at equal intervals on the outer surface of the linkage rod, and the dust collector is fixedly installed on one side of the outer frame; the utility model can make the upper-stage sieve mesh shake by using the kinetic energy of the falling coal gangue. In addition, the work of spraying water for dust removal is completed while the belt conveyor is feeding.

[0004] However, the patents in the prior art have the following several disadvantages:

[0005] (1) This kind of screening equipment for the production and processing of coal gangue uses a screen to screen coal gangue instead of a roller screen. The processing capacity of the screen is usually small. Under the impact and friction of the material, the screen wears quickly. Especially for hard coal gangue, the replacement frequency of the screen is relatively high. The screen needs to be replaced regularly, and components such as the screen frame may also be worn, resulting in relatively high maintenance costs. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to overcome the above technical defects and provide a screening device for in-situ mineralization of coal gangue that combines roller screening and screen screening, with higher screening efficiency, larger processing capacity, and longer service life.

[0007] To solve the above problems, the technical solution of the present invention is: a screening device for in-situ mineralization of coal gangue, including: a fixed bottom plate, a buffer assembly, a screening frame, a vibration assembly, a screening assembly, a transmission chamber, and a transmission assembly; the buffer assembly is fixedly connected to the top of the fixed bottom plate, the screening frame is fixedly connected to the top of the buffer assembly, the vibration assembly is located between the fixed bottom plate and the screening frame, the screening assembly is located inside the screening frame, the transmission chamber is located inside the wall of the screening frame, and the transmission assembly is located on both sides of the screening assembly;

[0008] Inside the transmission chamber, there are rotatably connected rollers, and there are also rotatably connected auxiliary wheels inside the transmission chamber. There is a transmission belt on the outer sides of the rollers and the auxiliary wheels. There is a motor two on one side of the screening frame, and the motor two is connected to the rollers. There is a roller tube between the rollers, and there are screen holes on the outer side of the roller tube.

[0009] Further, there is a fixedly connected buffer base on the top of the fixed bottom plate. Inside the buffer base, there is a fixedly connected spring with a damper. At the bottom of the screening frame, there is a fixedly connected support column, and the support column is slidably connected to the buffer base.

[0010] Further, there is a fixedly connected fixed frame at the bottom of the screening frame. Inside the fixed frame, there is a limit groove. On the top of the fixed bottom plate, there is a fixedly connected motor one, and on the top of the fixed bottom plate, there is a fixedly connected support frame. On one side of the support frame, there is a rotatably connected rotating disk. On one side of the motor one, there is also a rotating disk. There is a fixedly connected fixed shaft between the rotating disks, and the fixed shaft is adapted to the limit groove.

[0011] The advantages of the present invention compared with the existing technology are as follows:

[0012] (1) The screening device for in-situ mineralization of coal gangue of the present utility model is provided with a roller tube, and the outer side of the roller tube is provided with screening holes. By combining roller screening and screen screening, while improving the screening processing capacity, the screening accuracy is enhanced. Compared with screen screening, the screening holes on the screening shaft are less affected by the impact and wear of the material, so the service life of the screening holes is longer. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a perspective view of the screening device for in-situ mineralization of coal gangue of the present utility model.

[0014] Figure 2 is a cross-section of the screening device for in-situ mineralization of coal gangue of the present utility model Figure 1 .

[0015] Figure 3 is a cross-section of the screening device for in-situ mineralization of coal gangue of the present utility model Figure 2 .

[0016] Figure 4 is a cross-section of the screening device for in-situ mineralization of coal gangue of the present utility model Figure 3 .

[0017] Figure 5 is a cross-section of the screening device for in-situ mineralization of coal gangue of the present utility model Figure 4 .

[0018] Figure 6 is a cross-section of the screening device for in-situ mineralization of coal gangue of the present utility model Figure 5 .

[0019] As shown in the figure: 1. Fixed bottom plate; 2. Buffer assembly; 3. Screening frame; 4. Vibration assembly; 5. Screening assembly; 6. Transmission bin; 7. Transmission assembly; 8. Buffer base; 9. Spring; 10. Support column; 11. Fixed frame; 12. Limit groove; 13. Motor 1; 14. Support frame; 15. Rotating disc; 16. Fixed shaft; 17. Roller; 18. Auxiliary wheel; 19. Transmission belt; 20. Motor 2; 21. Roller tube; 22. Screening holes. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0020] The following further describes the specific embodiments of the present utility model with reference to the accompanying drawings. The same components are denoted by the same reference numerals.

[0021] It should be noted that the terms "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to the directions in the drawings, and the terms "inner" and "outer" respectively refer to the directions towards or away from the geometric center of a specific component.

[0022] To make the content of the present utility model easier to be clearly understood, the following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model.

[0023] As Figures 1 to 6 shown, a screening device for in-situ mineralization of coal gangue includes: a fixed bottom plate 1, a buffer assembly 2, a screening frame 3, a vibration assembly 4, a screening assembly 5, a transmission chamber 6, and a transmission assembly 7; the buffer assembly 2 is fixedly connected to the top of the fixed bottom plate 1, the screening frame 3 is fixedly connected to the top of the buffer assembly 2, the vibration assembly 4 is located between the fixed bottom plate 1 and the screening frame 3, the screening assembly 5 is located inside the screening frame 3, the transmission chamber 6 is located inside the wall of the screening frame 3, and the transmission assembly 7 is located on both sides of the screening assembly 5.

[0024] Inside the transmission chamber 6, there is a rotatably connected roller 17, and inside the transmission chamber 6, there is a rotatably connected auxiliary wheel 18. There is a transmission belt 19 outside the roller 17 and the auxiliary wheel 18. On one side of the screening frame 3, there is a motor two 20, and the motor two 20 is connected to the roller 17. There is a roller tube 21 between the rollers 17, and there are sieve holes 22 outside the roller tube 21.

[0025] At the bottom end of the screening frame 3, there is a fixedly connected fixing frame 11. Inside the fixing frame 11, there is a limiting groove 12. At the top of the fixed bottom plate 1, there is a fixedly connected motor one 13. At the top of the fixed bottom plate 1, there is a fixedly connected support frame 14. On one side of the support frame 14, there is a rotatably connected rotating disk 15. There is also a rotating disk 15 on one side of the motor one 13. There is a fixedly connected fixed shaft 16 between the rotating disks 15, and the fixed shaft 16 is adapted to the limiting groove 12.

[0026] At the top of the fixed bottom plate 1, there is a fixedly connected buffer base 8. Inside the buffer base 8, there is a fixedly connected spring 9, and the spring 9 is provided with a damper. At the bottom end of the screening frame 3, there is a fixedly connected support column 10, and the support column 10 is slidably connected to the buffer base 8.

[0027] In specific use, start the motor two 20 to make the roller 17 rotate. The roller 17 drives all the rollers 17 and the roller tube 21 to rotate through the transmission belt 19. Pour the raw materials to be screened into the screening frame 3. The roller tube 21 drives the screening and material transportation to operate. The crushed stones and fine coal blocks fall to the bottom of the screening frame 3 through the screening gaps and sieve holes 22 between the rollers. Start the motor one 13 to make the rotating disk 15 rotate, drive the fixed shaft 16 to operate, slide in the limiting groove 12, and drive the screening frame 3 to vibrate through the fixing frame 11, improving the screening efficiency. The support column 10 slides in the buffer base 8, compresses the spring 9, and completes the shock absorption and buffering through the damper of the spring 9, enabling the screening frame to vibrate stably.

[0028] All the electrical components appearing in this article are connected to the external main controller and the 220V mains power supply. And the main controller can be a conventional known device such as a computer for control. In the specific implementation manners of the present disclosure, the detailed descriptions of known functions and known components are omitted. To ensure the compatibility of the device, the operation means adopted are consistent with the parameters of market instruments.

[0029] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A screening device for in-situ coal gangue mineralization, characterized in that: include: A fixed bottom plate (1), a buffer assembly (2), a screening frame (3), a vibration assembly (4), a screening assembly (5), a transmission bin (6) and a transmission assembly (7); The buffer assembly (2) is fixedly connected to the top of the fixed bottom plate (1), the screening frame (3) is fixedly connected to the top of the buffer assembly (2), the vibration assembly (4) is located between the fixed bottom plate (1) and the screening frame (3), the screening assembly (5) is located on the inner side of the screening frame (3), the transmission bin (6) is located on the inner side of the bin wall of the screening frame (3), and the transmission assembly (7) is located on both sides of the screening assembly (5); A rotatably connected roller (17) is provided on the inner side of the transmission bin (6), a rotatably connected auxiliary wheel (18) is provided on the inner side of the transmission bin (6), a transmission belt (19) is provided on the outer sides of the roller (17) and the auxiliary wheel (18), a second motor (20) is provided on one side of the screening frame (3), the second motor (20) is connected to the roller (17), a roller tube (21) is provided between the rollers (17), and a sieve hole (22) is provided on the outer side of the roller tube (21).

2. A screening device for in-situ coal gangue mineralization according to claim 1, characterized in that: A fixedly connected buffer base (8) is provided at the top end of the fixed bottom plate (1), a fixedly connected spring (9) is provided on the inner side of the buffer base (8), and the spring (9) has a damper. A fixedly connected support column (10) is provided at the bottom end of the screening frame (3), and the support column (10) is slidably connected to the buffer base (8).

3. The screening device for in-situ coal gangue mineralization according to claim 1, characterized in that: The bottom end of the screening frame (3) is provided with a fixed frame (11), the inner side of the fixed frame (11) is provided with a limiting groove (12), the top end of the fixed bottom plate (1) is provided with a fixed motor 1 (13), the top end of the fixed bottom plate (1) is provided with a fixed support frame (14), one side of the support frame (14) is provided with a rotatably connected rotating disk (15), one side of the motor 1 (13) is also provided with a rotating disk (15), and a fixed shaft (16) is provided between the rotating disks (15), and the fixed shaft (16) is adapted to the limiting groove (12).

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