Coal mine screening equipment for coal mining
Through the combination of two-stage screening box design and eccentric shaft vibrator, the problem of incomplete screening in existing coal mine screening equipment is solved, and the thorough screening and efficient grading of coal blocks are achieved.
Patent Information
- Application Number
- CN202422031180.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-21
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-08-21
AI Technical Summary
The existing coal mine screening equipment has the problem of incomplete screening during the screening process, especially the inadequate screening of small particles or small pieces of coal blocks, resulting in poor screening.
The two-stage screening box design is adopted. The first screening box and the second screening box are equipped with screening mesh plates and bending guide plates. Combined with the power transmission of the eccentric shaft and the vibrator, double vibration screening is realized, extending the screening time of coal blocks in the screening box, and collecting coal blocks of different specifications through the misaligned outlet.
The thorough screening of coal blocks is achieved, and the coal blocks can be divided into three particle specifications, which significantly improves the screening effect, ensuring that small particles or small coal blocks can also be fully screened.
Smart Images
Figure CN223128610U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of coal mine screening, and specifically relates to a coal mine screening device for coal mine mining. Background Art
[0002] After coal mines are mined, it is usually necessary to screen the coal mines to facilitate subsequent processing. When screening existing coal blocks, it is usually carried out through a sieve mesh. The sieve mesh is inclined, and a vibration device is used to drive the sieve mesh to vibrate to screen the coal blocks. Due to the certain inertia during the feeding process of the coal blocks, the inclined sieve mesh will provide acceleration to the coal blocks during the screening process, causing the coal blocks to quickly pass through the sieve mesh. Therefore, during the actual screening process of the coal blocks, the screening is not thorough. Small particles or small pieces of coal blocks fall directly along the sieve mesh without passing through the sieve mesh and leaking down due to excessive speed. Therefore, the screening effect is not good.
[0003] In view of this, the present utility model is specifically proposed. Summary of the Utility Model
[0004] The technical problem to be solved by the present utility model is to overcome the deficiencies of the prior art and provide a coal mine screening device for coal mine mining. To solve the above technical problems, the basic concept of the technical solution adopted by the present utility model is as follows:
[0005] A coal mine screening device for coal mine mining includes a support box body and a moving mating track. A moving wheel is arranged above the moving mating track. The moving wheel is installed in a moving mounting seat. A first support column is arranged above the moving mounting seat. A second support column is telescopically and cooperatively arranged above the first support column. The upper end of the second support column is fixedly connected to a second screening box. A first screening box is arranged above the second screening box. Screening mesh plates are arranged in both the first screening box and the second screening box. The mesh holes of the screening mesh plate in the first screening box are larger than the mesh holes of the screening mesh plate in the second screening box. Baffle guiding plates are arranged on the screening mesh plates in both the first screening box and the second screening box. A feeding hopper is arranged at the upper part of the first screening box. A hinge seat is installed at one end of the bottom surface of the second screening box close to the feeding hopper. One end of a connecting rod is rotatably connected to the hinge seat. The other end of the connecting rod is rotatably connected to an eccentric shaft. The eccentric shaft is installed on an eccentric seat. The eccentric seat is arranged at an eccentric position of a rotating wheel. A vibrator is installed on the bottom surface of the second screening box.
[0006] As a further scheme of the present utility model: An upper support frame is fixedly arranged above the support box body. A gearbox is fixedly installed on the upper support frame. A screening power motor is installed at the input shaft of the gearbox. The output shaft of the gearbox is cooperatively arranged with the center of the rotating wheel. The screening power motor is used to provide power support for the rotation of the rotating wheel.
[0007] As a further solution of the present utility model: the first support column is of a hollow structure, the lower end of the second support column is fitted and installed in the cavity of the first support column, a vibration matching spring is arranged at the lower end of the first support column, the other end of the vibration matching spring is located at the bottom of the cavity, a buffer column is arranged at the bottom of the cavity of the first support column, and the vibration matching spring is sleeved outside the buffer column.
[0008] As a further solution of the present utility model: limit end plates are arranged at both ends of the moving matching track, a receiving box is arranged in parallel below the second screening box, a main support column is fixedly arranged at the middle position of the bottom surface of the receiving box, and the lower end of the main support column is fixedly connected to the top surface of the support box body for stably supporting the receiving box.
[0009] As a further solution of the present utility model: the first screening box and the second screening box are fixedly connected and vibrate synchronously during screening. A large block discharging port is arranged at the lower end of the first screening box, a medium block discharging port is arranged at the lower end of the second screening box, and a small block discharging port is arranged at the lower end of the receiving box.
[0010] As a further solution of the present utility model: the large block discharging port, the medium block discharging port, and the small block discharging port are arranged in a staggered structure, and receiving boxes are arranged in a supporting manner below the large block discharging port, the medium block discharging port, and the small block discharging port for collecting the screened coal blocks.
[0011] After adopting the above technical solutions, the present utility model has the following beneficial effects compared with the prior art.
[0012] The coal screening device of the present utility model is provided with two - stage screening boxes, which can screen coal blocks into three particle sizes. Deflection guide plates are arranged at the screening mesh plates of the first screening box and the second screening box, which can effectively slow down the discharging speed of coal blocks in the screening box, extend the screening time, enable the coal blocks to be fully screened on the screen, and have thorough screening and good screening effect.
[0013] Under the action of the rotating wheel, eccentric seat, eccentric shaft, and connecting rod, the first screening box and the second screening box of the present utility model can move horizontally along the moving matching track, and at the same time, under the action of the vibrator, cooperate with the vibration matching spring to realize longitudinal vibration, double - vibration screening, further ensuring the screening effect.
[0014] The following further describes in detail the specific implementation manners of the present utility model with reference to the drawings. Description of the Drawings
[0015] The accompanying drawings, as part of this application, are used to provide a further understanding of the present utility model. The schematic embodiments and descriptions thereof of the present utility model are used to explain the present utility model, but do not constitute an improper limitation to the present utility model. Obviously, the accompanying drawings in the following description are only some embodiments. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings. In the drawings:
[0016] Figure 1 is a schematic structural view of the first perspective of the present utility model;
[0017] Figure 2 is a schematic structural view of the second perspective of the present utility model;
[0018] Figure 3 is the front view of the present utility model;
[0019] Figure 4 is a schematic connection view of the first support column and the second support column of the present utility model.
[0020] In the figure: 1, support box body; 2, moving fit track; 3, large block blanking port; 4, medium block blanking port; 5, small block blanking port; 6, receiving box; 7, first screening box; 8, second screening box; 9, screening mesh plate; 10, baffle guiding plate; 11, feeding hopper; 12, upper support frame; 13, screening power motor; 14, gearbox; 15, rotating wheel; 16, eccentric seat; 17, eccentric shaft; 18, connecting rod; 19, hinge seat; 20, limiting end plate; 21, vibrator; 22, moving wheel; 23, main support column; 24, moving mounting seat; 25, first support column; 26, second support column; 27, vibration fit spring; 28, buffer column; 29, receiving box.
[0021] It should be noted that these drawings and text descriptions are not intended to limit the scope of the concept of the present utility model in any way, but to illustrate the concept of the present utility model to those skilled in the art by referring to specific embodiments. Detailed implementation manners
[0022] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. The following embodiments are used to illustrate the present utility model, but are not used to limit the scope of the present utility model.
[0023] Such as Figures 1 to 4As shown in the figure, a coal screening device for coal mining includes a support box body 1 and a moving matching track 2. Above the moving matching track 2, there is a moving wheel 22, which is installed in a moving mounting seat 24. Above the moving mounting seat 24, there is a first support column 25. Above the first support column 25, a second support column 26 is telescopically and cooperatively arranged. The upper end of the second support column 26 is fixedly connected to a second screening box 8. Above the second screening box 8, there is a first screening box 7. Screening mesh plates 9 are arranged in both the first screening box 7 and the second screening box 8. The mesh holes of the screening mesh plate 9 in the first screening box 7 are larger than those of the screening mesh plate 9 in the second screening box 8. Deflection guide plates 10 are arranged on the screening mesh plates 9 in both the first screening box 7 and the second screening box 8. A feeding hopper 11 is arranged at the upper part of the first screening box 7. At one end of the bottom surface of the second screening box 8 close to the feeding hopper 11, there is a hinge seat 19. The hinge seat 19 is rotatably connected to one end of a connecting rod 18. The other end of the connecting rod 18 is rotatably connected to an eccentric shaft 17. The eccentric shaft 17 is installed on an eccentric seat 16. The eccentric seat 16 is arranged at an eccentric position of a rotating wheel 15. A vibrator 21 is installed on the bottom surface of the second screening box 8.
[0024] Among them, an upper support frame 12 is fixedly arranged above the support box body 1. A gearbox 14 is fixedly installed on the upper support frame 12. A screening power motor 13 is installed at the input shaft of the gearbox 14. The output shaft of the gearbox 14 is cooperatively arranged with the center of the rotating wheel 15. The screening power motor 13 is used to provide power support for the rotation of the rotating wheel 15.
[0025] The inside of the first support column 25 is of a hollow structure. The lower end of the second support column 26 is cooperatively installed in the cavity of the first support column 25. A vibration matching spring 27 is arranged at the lower end of the first support column 25. The other end of the vibration matching spring 27 is located at the bottom of the cavity. A buffer column 28 is arranged at the bottom of the cavity of the first support column 25. The vibration matching spring 27 is sleeved outside the buffer column 28.
[0026] Limit end plates 20 are arranged at both ends of the moving matching track 2. A receiving box 29 is arranged in parallel below the second screening box 8. A main support column 23 is fixedly arranged at the middle position of the bottom surface of the receiving box 29. The lower end of the main support column 23 is fixedly connected to the top surface of the support box body 1, which is used to stably support the receiving box 29.
[0027] The first screening box 7 and the second screening box 8 are fixedly connected and vibrate synchronously during screening. A large block discharging port 3 is arranged at the lower end of the first screening box 7. A medium block discharging port 4 is arranged at the lower end of the second screening box 8. A small block discharging port 5 is arranged at the lower end of the receiving box 29.
[0028] The large-piece discharging opening 3, medium-piece discharging opening 4, and small-piece discharging opening 5 are arranged in a staggered structure. Below the large-piece discharging opening 3, medium-piece discharging opening 4, and small-piece discharging opening 5, a receiving box 6 is provided correspondingly for collecting the screened coal pieces.
[0029] The working principle of the present utility model is as follows: When it is necessary to screen coal pieces during the coal mining process, the coal pieces after crushing treatment are conveyed to the position above the feeding hopper 11 through a conveyor belt. The coal pieces enter the feeding hopper 11. The screening power motor 13 drives the rotating wheel 15 to rotate through the transmission structure in the gearbox 14. The eccentric seat 16 and eccentric shaft 17 on the rotating wheel 15 rotate along with the rotating wheel 15. The eccentric shaft 17 drives the second screening box 8 and the first screening box 7 to reciprocate along the moving fit track 2 through the connecting rod 18. At the same time, the vibrator 21 drives the second screening box 8 and the first screening box 7 to vibrate, so as to screen the coal pieces.
[0030] On the screening mesh plate 9 of the first screening box 7, a flow deflection guide plate 10 is provided. Two flow deflection guide plates 10 are in a group, and the inclination directions of the two flow deflection guide plates 10 in a group are opposite. By using multiple groups of flow deflection guide plates 10, the falling speed of the coal pieces in the first screening box 7 can be effectively slowed down, and the time of the coal pieces in the first screening box 7 can be prolonged, so as to realize the full screening of the coal pieces. Those with a size specification larger than the mesh hole specification of the screening mesh plate 9 in the first screening box 7 fall from the large-piece discharging opening 3, and those with a size specification smaller than the mesh hole specification of the screening mesh plate 9 in the first screening box 7 fall into the second screening box 8 for secondary screening. The mesh hole specification of the screening mesh plate 9 provided in the second screening box 8 is smaller than that of the screening mesh plate 9 in the first screening box 7. A flow deflection guide plate 10 is also provided on the screening mesh plate 9 of the second screening box 8 to realize the full screening treatment of the coal pieces.
[0031] The coal screening equipment of the present utility model is provided with two-stage screening boxes, which can screen coal pieces into three particle specifications. Flow deflection guide plates 10 are provided at the screening mesh plates 9 of the first screening box 7 and the second screening box 8, which can effectively slow down the discharging speed of the coal pieces in the screening box, prolong the screening time, and enable the coal pieces to be fully screened on the screen, with thorough screening and good screening effect. The first screening box 7 and the second screening box 8 can move horizontally along the moving fit track 2 under the action of the rotating wheel 15, eccentric seat 16, eccentric shaft 17, and connecting rod 18. At the same time, under the action of the vibrator 21, and in cooperation with the vibration fit spring 27, longitudinal vibration can be realized for double-vibration screening, further ensuring the screening effect.
[0032] The above are only the preferred embodiments of the present utility model, and do not impose any form of limitation on the present utility model. Although the present utility model has been disclosed above with the preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art of this patent, without departing from the scope of the technical solution of the present utility model, can make some changes or modifications using the technical content prompted above to form equivalent embodiments of equivalent changes. However, as long as it does not depart from the content of the technical solution of the present utility model, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present utility model still fall within the scope of the technical solution of the present utility model.
Claims
1. A coal screening device for coal mining, comprising a support box body (1) and a moving mating track (2), characterized in that, Above the moving mating track (2), there is a moving wheel (22) installed inside a moving mounting seat (24). Above the moving mounting seat (24), there is a first support column (25). A second support column (26) is telescopically fitted above the first support column (25). The upper end of the second support column (26) is fixedly connected to the second screening box (8). Above the second screening box (8), there is a first screening box (7). Screening mesh plates (9) are arranged in both the first screening box (7) and the second screening box (8). The mesh holes of the screening mesh plate (9) in the first screening box (7) are larger than those of the screening mesh plate (9) in the second screening box (8). Baffle guide plates (10) are arranged on the screening mesh plates (9) in both the first screening box (7) and the second screening box (8). A feeding hopper (11) is arranged at the upper part of the first screening box (7). At one end of the bottom surface of the second screening box (8) close to the feeding hopper (11), a hinge seat (19) is installed. The hinge seat (19) is rotatably connected to one end of a connecting rod (18). The other end of the connecting rod (18) is rotatably connected to an eccentric shaft (17). The eccentric shaft (17) is installed on an eccentric seat (16). The eccentric seat (16) is arranged at an eccentric position of a rotating wheel (15). A vibrator (21) is installed on the bottom surface of the second screening box (8).
2. The coal screening device for coal mining according to claim 1, characterized in that, Above the support box body (1), an upper support frame (12) is fixedly arranged. A gearbox (14) is fixedly installed on the upper support frame (12). A screening power motor (13) is installed at the input shaft of the gearbox (14). The output shaft of the gearbox (14) is matched with the center of the rotating wheel (15).
3. The coal screening equipment for coal mining according to claim 2, characterized in that, The inside of the first support column (25) is a hollow structure. The lower end of the second support column (26) is fitted and installed inside the cavity of the first support column (25). A vibration matching spring (27) is arranged at the lower end of the first support column (25). The other end of the vibration matching spring (27) is located at the bottom of the cavity. A buffer column (28) is arranged at the bottom of the cavity of the first support column (25). The vibration matching spring (27) is sleeved outside the buffer column (28).
4. A coal screening device for coal mining according to claim 3, characterized in that, Limit end plates (20) are arranged at both ends of the moving mating track (2). A receiving box (29) is arranged in parallel below the second screening box (8). A main support column (23) is fixedly arranged at the middle position of the bottom surface of the receiving box (29). The lower end of the main support column (23) is fixedly connected to the top surface of the support box body (1).
5. A coal screening device for coal mining according to claim 4, characterized in that, The first screening box (7) and the second screening box (8) are fixedly connected and vibrate synchronously during screening. A large-piece discharge opening (3) is arranged at the lower end of the first screening box (7). A medium-piece discharge opening (4) is arranged at the lower end of the second screening box (8). A small-piece discharge opening (5) is arranged at the lower end of the receiving box (29).
6. The coal screening equipment for coal mining according to claim 5, characterized in that, The large-piece discharging opening (3), the medium-piece discharging opening (4), and the small-piece discharging opening (5) are arranged in a staggered structure, and a receiving box (6) is provided in a supporting manner below each of the large-piece discharging opening (3), the medium-piece discharging opening (4), and the small-piece discharging opening (5).