Screening device for coal mine ground coal gangue separation

Abstract

The utility model discloses a coal mine ground coal gangue screening device which comprises a bottom plate, the upper end of the bottom plate is fixedly connected with two U-shaped supporting frames which are symmetrically arranged, the upper ends of the two U-shaped supporting frames are jointly and fixedly connected with a box body, and the front side of the box body is provided with a first discharging port and a second discharging port. The lower end of the first discharging port is fixedly connected with a plurality of first reset springs arranged at equal intervals. The motor, the belt, the rotating blocks, the fan and the like are adopted, the first rotating rod and the second rotating rod are driven by the motor and the belt to rotate, and therefore the first screening plate and the second screening plate can be driven by the first rotating block and the second rotating block to shake up and down, and the screening efficiency is improved; and moreover, blockage of the first screening plate and the second screening plate can be avoided through shaking, coal gangue blocked in the first discharging hole, the second discharging hole and the third discharging hole can be blown off through a draught fan, and therefore blockage of the screening plates is further avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of coal gangue, in particular to a screening device for selecting coal gangue on the ground of a coal mine. Background Art

[0002] Coal gangue is solid waste discharged during the coal mining and coal washing process. It is a kind of black-gray rock with low carbon content and harder than coal that is associated with coal seams during the coal formation process. The chemical composition of coal gangue is mainly inorganic and organic matter. The inorganic components are generally oxides of silicon, aluminum, calcium, magnesium, iron and some rare metals.

[0003] Most of the existing coal gangue classification and screening devices for coal mines only perform one screening. The structure of the coal gangue screening device is single and cannot perform multi-level screening on the coal gangue. In addition, during the screening process, the coal gangue easily blocks the sieve holes on the sieve plate, resulting in low screening efficiency for the coal gangue. Therefore, in order to solve the above-mentioned problems, the utility model proposes a coal gangue classification and screening device for coal mines. Summary of the invention

[0004] The utility model aims to provide a screening device for selecting and screening coal gangue on the ground of a coal mine, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a coal gangue selection and screening device for the surface of a coal mine, comprising a bottom plate, the upper end of the bottom plate is fixedly connected to two symmetrically arranged U-shaped support frames, the upper ends of the two U-shaped support frames are commonly fixedly connected to a box body, a first discharge port and a second discharge port are provided on the front side of the box body, a plurality of first return springs arranged at equal intervals are fixedly connected to the lower end of the first discharge port, the upper ends of the plurality of first return springs are commonly fixedly connected to a first screening plate, a plurality of first discharge holes arranged at equal intervals are provided on the first screening plate, one end of the first screening plate away from the first discharge port is rotatably connected to two sides of the box body, a plurality of second return springs arranged at equal intervals are fixedly connected to the lower end of the second discharge port, the upper ends of the plurality of second return springs are commonly fixedly connected to a second screening plate, a plurality of second discharge holes arranged at equal intervals are provided on the second screening plate, and one end of the second screening plate away from the second discharge port is rotatably connected to two sides of the box body;

[0006] The box body is provided with a box cover on one side away from the first discharge port, and a box cover is detachably connected to the top of the box body, and a plurality of third discharge ports arranged at equal intervals are provided on the lower end of the box body, and the upper end of the box cover is fixedly connected to the fan, and the lower end of the fan is fixedly connected to the exhaust pipe, and the lower end of the exhaust pipe is fixedly connected to the air dispersion plate, and the lower end of the air dispersion plate is fixedly connected to a plurality of blowing heads arranged at equal intervals. One side of the box body is fixedly connected to a baffle, and the baffle is fixedly connected to a support plate on the side away from the box body, and the upper end of the support plate is fixedly connected to a motor, and the output end of the motor is fixedly connected to a first rotating rod, and one end of the first rotating rod away from the motor is fixedly connected to a first rotating block through the side wall of the box body, and the first rotating rod is rotatably connected to a belt, and one end of the belt away from the first rotating rod is rotatably connected to a second rotating rod, one end of the second rotating rod passes through the baffle, and the other end of the second rotating rod passes through the side wall of the box body and is fixedly connected to the second rotating block.

[0007] Preferably, the radius of the second discharge hole is greater than the radius of the first discharge hole, and the radius of the first discharge hole is greater than the radius of the third discharge hole.

[0008] Preferably, the first rotating block and the second rotating block are both elliptical blocks, the first rotating block is located at the lower end of the second screen plate close to the second discharge port, and the second rotating block is located at the lower end of the first screen plate close to the first discharge port.

[0009] Preferably, the plurality of blowing heads are aligned with the plurality of first discharge holes, the plurality of second discharge holes and the plurality of third discharge holes.

[0010] Preferably, the upper end of the bottom plate is located just below the box body and is fixedly connected to a material receiving box.

[0011] Compared with the prior art, the utility model has the following beneficial effects: the utility model adopts a motor, a belt, a rotating block, a fan, etc., and drives the first rotating rod and the second rotating rod to rotate through the motor and the belt, so that not only the first rotating block and the second rotating block can drive the first screen plate and the second screen plate to shake up and down, thereby improving the screening efficiency, but also the shaking can avoid the blockage of the first screen plate and the second screen plate, and the coal gangue blocked in the first discharge hole, the second discharge hole and the third discharge hole can be blown off by the fan, thereby further avoiding the blockage of the screen plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the utility model;

[0013] Figure 2 This is a rear view structural diagram of the utility model;

[0014] Figure 3 This is a schematic diagram of the cross-sectional structure of the utility model;

[0015] Figure 4 It is a structural schematic diagram of the motor of the utility model;

[0016] Figure 5 It is a structural schematic diagram of the fan of the utility model.

[0017] In the figure: 1. bottom plate; 2. U-shaped support frame; 3. box body; 31. first discharge port; 32. second discharge port; 33. feed port; 34. box cover; 35. third discharge hole; 4. first return spring; 5. second return spring; 6. first screening plate; 61. first discharge hole; 7. second screening plate; 71. second discharge hole; 8. baffle; 9. support plate; 10. motor; 11. first rotating rod; 12. belt; 13. second rotating rod; 14. first rotating block; 15. second rotating block; 16. fan; 17. exhaust duct; 18. air dispersion plate; 19. air blowing head; 20. receiving box. DETAILED DESCRIPTION

[0018] See also Figure 1-5 The utility model provides a technical solution: a coal gangue selection and screening device for coal mine surface, comprising a bottom plate 1, the upper end of the bottom plate 1 is fixedly connected to two symmetrically arranged U-shaped support frames 2, the upper ends of the two U-shaped support frames 2 are commonly fixedly connected to a box body 3, a first discharge port 31 and a second discharge port 32 are provided on the front side of the box body 3, a plurality of first return springs 4 arranged at equal intervals are fixedly connected to the lower end of the first discharge port 31, the upper ends of the plurality of first return springs 4 are commonly fixedly connected to a first screening plate 6, a plurality of first discharge holes 61 arranged at equal intervals are provided on the first screening plate 6, one end of the first screening plate 6 away from the first discharge port 31 is rotatably connected to both sides of the box body 3, a plurality of second return springs 5 ​​arranged at equal intervals are fixedly connected to the lower end of the second discharge port 32, a second screening plate 7 is commonly fixedly connected to the upper ends of the plurality of second return springs 5, a plurality of second discharge holes 71 arranged at equal intervals are provided on the second screening plate 7, and one end of the second screening plate 7 away from the second discharge port 32 is rotatably connected to both sides of the box body 3;

[0019] The box body 3 is provided with a feeding port 33 on one side away from the first discharge port 31. The upper end of the box body 3 is detachably connected with a box cover 34. The lower end of the box body 3 is provided with a plurality of third discharge holes 35 arranged at equal intervals. The upper end of the box cover 34 is fixedly connected with a fan 16. The lower end of the fan 16 is fixedly connected with an exhaust pipe 17. The lower end of the exhaust pipe 17 is fixedly connected with a wind dispersion plate 18. The lower end of the wind dispersion plate 18 is fixedly connected with a plurality of blowing heads 19 arranged at equal intervals. A baffle plate 8 is fixedly connected with one side of the box body 3. The baffle plate 8 is provided with a third discharge hole 35 arranged at equal intervals. The side is fixedly connected with a support plate 9, the upper end of the support plate 9 is fixedly connected with a motor 10, the output end of the motor 10 is fixedly connected with a first rotating rod 11, the end of the first rotating rod 11 away from the motor 10 passes through the side wall of the box body 3 and is fixedly connected with a first rotating block 14, the first rotating rod 11 is rotatably connected with a belt 12, the end of the belt 12 away from the first rotating rod 11 is rotatably connected with a second rotating rod 13, one end of the second rotating rod 13 passes through the baffle 8, and the other end of the second rotating rod 13 passes through the side wall of the box body 3 and is fixedly connected with a second rotating block 15.

[0020] Furthermore, the radius of the second discharge hole 71 is greater than the radius of the first discharge hole 61 , and the radius of the first discharge hole 61 is greater than the radius of the third discharge hole 35 , thereby achieving multi-stage screening.

[0021] Furthermore, the first rotating block 14 and the second rotating block 15 are both elliptical blocks. The first rotating block 14 is located at the lower end of the second screen plate 7 near the second discharge port 32, and the second rotating block 15 is located at the lower end of the first screen plate 6 near the first discharge port 31, so as to facilitate the vibration of the first screen plate 6 and the second screen plate 7 to improve the screening efficiency.

[0022] Furthermore, multiple blowing heads 19 are aligned with multiple first discharge holes 61, multiple second discharge holes 71 and multiple third discharge holes 35, and the coal gangue blocked in the first discharge holes 61, the second discharge holes 71 and the third discharge holes 35 are blown off by the blowing heads 19.

[0023] Furthermore, a material receiving box 20 is fixedly connected to the upper end of the bottom plate 1 just below the box body 3 to facilitate material receiving.

[0024] Specifically, when the utility model is used, the motor 10 is first turned on, the motor 10 drives the first rotating rod 11 to rotate, the first rotating rod 11 drives the belt 12 to rotate, the belt 12 drives the second rotating rod 13 to rotate, thereby driving the first rotating block 14 and the second rotating block 15 to rotate, and then because the first return spring 4 and the second return spring 5 are respectively connected to the first screen plate 6 and the second screen plate 7, the rotation of the first rotating block 14 and the second rotating block 15 will drive the first screen plate 6 and the second screen plate 7 to shake up and down, and then the coal gangue is fed from the feed port 33 Pour it into the box body 3, and then screen it through the first screening plate 6 and the second screening plate 7. Then the coal gangue of different sizes will be discharged through the first discharge port 31, the second discharge port 32 and the third discharge port 35 respectively. Then, after the screening work is completed or regularly, the fan 16 can be turned on, and the coal gangue blocked in the first discharge hole 61, the second discharge hole 71 and the third discharge hole 35 can be blown off through a plurality of equally spaced blowing heads 19, thereby avoiding blockage of the first screening plate 6 and the second screening plate 7, thereby improving the efficiency of the screening work.

Claims

1. A screening device for selecting coal gangue on the ground of a coal mine, comprising a bottom plate (1), characterized in that: The upper end of the bottom plate (1) is fixedly connected to two symmetrically arranged U-shaped support frames (2), the upper ends of the two U-shaped support frames (2) are commonly fixedly connected to a box body (3), a first discharge port (31) and a second discharge port (32) are provided at the front side of the box body (3), a plurality of first return springs (4) arranged at equal intervals are fixedly connected to the lower end of the first discharge port (31), the upper ends of the plurality of first return springs (4) are commonly fixedly connected to a first screening plate (6), and a plurality of first return springs (4) arranged at equal intervals are provided on the first screening plate (6). The first sieve plate (6) comprises a discharge hole (61), one end of the first sieve plate (6) away from the first discharge port (31) is rotatably connected to the two sides of the box body (3), the lower end of the second discharge port (32) is fixedly connected to a plurality of second return springs (5) arranged at equal intervals, the upper ends of the plurality of second return springs (5) are commonly fixedly connected to a second sieve plate (7), the second sieve plate (7) is provided with a plurality of second discharge holes (71) arranged at equal intervals, and one end of the second sieve plate (7) away from the second discharge port (32) is rotatably connected to the two sides of the box body (3); A feeding port (33) is provided on a side of the box body (3) away from the first discharge port (31); a box cover (34) is detachably connected to the upper end of the box body (3); a plurality of third discharge holes (35) arranged at equal intervals are provided at the lower end of the box body (3); a fan (16) is fixedly connected to the upper end of the box cover (34); an exhaust pipe (17) is fixedly connected to the lower end of the fan (16); a wind dispersion plate (18) is fixedly connected to the lower end of the exhaust pipe (17); a plurality of air blowing heads (19) arranged at equal intervals are fixedly connected to the lower end of the wind dispersion plate (18); a baffle (8) is fixedly connected to one side of the box body (3); the baffle (8) is away from the box body (3). A support plate (9) is fixedly connected to one side of the housing (3); the upper end of the support plate (9) is fixedly connected to a motor (10); the output end of the motor (10) is fixedly connected to a first rotating rod (11); one end of the first rotating rod (11) away from the motor (10) passes through the side wall of the housing (3) and is fixedly connected to a first rotating block (14); a belt (12) is rotatably connected to the first rotating rod (11); one end of the belt (12) away from the first rotating rod (11) is rotatably connected to a second rotating rod (13); one end of the second rotating rod (13) passes through a baffle (8); and the other end of the second rotating rod (13) passes through the side wall of the housing (3) and is fixedly connected to a second rotating block (15).

2. The device for selecting and screening coal gangue on the surface of a coal mine according to claim 1, characterized in that: The radius of the second discharge hole (71) is greater than the radius of the first discharge hole (61), and the radius of the first discharge hole (61) is greater than the radius of the third discharge hole (35).

3. The device for selecting and screening coal gangue on the surface of a coal mine according to claim 1, characterized in that: The first rotating block (14) and the second rotating block (15) are both elliptical blocks; the first rotating block (14) is located at the lower end of the second sieve plate (7) close to the second discharge port (32); and the second rotating block (15) is located at the lower end of the first sieve plate (6) close to the first discharge port (31).

4. The device for selecting and screening coal gangue on the surface of a coal mine according to claim 1, characterized in that: The plurality of blowing heads (19) are aligned with the plurality of first discharge holes (61), the plurality of second discharge holes (71), and the plurality of third discharge holes (35).

5. The device for selecting and screening coal gangue on the surface of a coal mine according to claim 1, characterized in that: The upper end of the bottom plate (1) is located directly below the box body (3) and is fixedly connected to a material receiving box (20).

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