Controllable coal caving and gangue sorting device for top coal caving face

Abstract

The utility model discloses a kind of controllable coal drawing of top coal caving face, including gangue picking frame, two fixed seats are symmetrically equipped in the both sides of gangue picking frame, the bottom end of four fixed seats is fixed with vertical pole, the outer wall of four vertical poles is commonly equipped with protection frame, the inner wall of protection frame is fixed with grid, the bottom end of protection frame is fixed with vibration motor.The utility model is equipped with collecting box, baffle, collecting box is pre-collected to the coal gangue mixture of drop discharge port, and drop into discharge chute, under the action of discharging motor, it drives baffle to rotate, and then coal gangue mixture in discharge chute is discharged outward, by this mode, coal gangue can be discharged with controlled quantity, not only avoid causing gangue picking mechanism overload operation and cause screening efficiency to drop fault, but also avoid uneven distribution of material in device and cause local area coal gangue separation not to be complete, finally make that gangue picking effect fluctuation is small, stability is good.

Description

Technical Field

[0001] This utility model relates to the field of top coal caving mining technology, specifically a controllable coal release and gangue sorting device for top coal caving working faces. Background Technology

[0002] Top-coal caving mining technology has become one of the mainstream technologies for thick coal seam mining in my country due to its advantages such as high recovery efficiency, high resource recovery rate, and relatively low equipment investment cost. It is widely used in the mining of thick coal seams in various underground coal mines. However, in actual top-coal caving operations, a large amount of gangue (such as roof rock fragments and interbedded gangue layers) is easily mixed in when the top coal collapses. If the coal and gangue are not separated in time, it will not only reduce the quality of marketable coal but also increase the processing costs of subsequent coal washing. Therefore, installing a coal discharge and gangue separation device below the coal discharge port of the top-coal caving face to achieve real-time separation of coal and gangue has become a key link in ensuring the economic benefits of top-coal caving mining technology.

[0003] However, most mainstream coal feeding and gangue sorting devices in the current market suffer from a technical shortcoming: a lack of controlled screening capability. When the coal discharge port opens to feed the gangue sorting device with a mixture of coal and gangue, the device cannot adjust the feed rate according to the material flow, resulting in a large amount of coal and gangue mixture flooding into the sorting mechanism at once. This uncontrolled feeding method not only easily causes the sorting mechanism to overload, leading to a decrease in screening efficiency, but also results in uneven material distribution within the device, causing incomplete separation of coal and gangue in local areas, ultimately leading to large fluctuations and poor stability in the sorting effect. Utility Model Content

[0004] The purpose of this utility model is to provide a controllable coal release and gangue removal device for top coal caving faces, so as to solve the problems mentioned in the background art. To solve the above technical problems, this utility model is achieved through the following technical solution:

[0005] This utility model relates to a controllable coal release and gangue removal device for top coal caving faces, comprising:

[0006] The sorting rack has two fixed seats symmetrically arranged on both sides. The bottom of each of the four fixed seats is fixed with a vertical rod. The outer wall of the four vertical rods is provided with a protective frame. The inner wall of the protective frame is fixed with a grid. The bottom of the protective frame is fixed with a vibration motor. The inner wall of the sorting rack is fixed with a collection box. The bottom of one side of the collection box is provided with a discharge chute. The bottom of the collection box is fixed with a connecting frame.

[0007] An auxiliary material control component includes a feeding motor. The output end of the feeding motor is fixedly provided with a rotating shaft. A transmission component is fixedly provided on the outer wall of the rotating shaft, and a connecting shaft is connected through the transmission component. Four partition plates are fixedly provided on the outer wall of the connecting shaft.

[0008] Furthermore, a discharge port is provided on one side of the bottom of the collection box, and the discharge port is connected to the inside of the discharge trough.

[0009] Furthermore, the top end of the rotating shaft is rotatably connected to the bottom end of the collection box.

[0010] Furthermore, the outer wall of the connecting shaft penetrates the bottom end of the collection box, and the top end of the connecting shaft is rotatably connected to the top end of the discharge trough.

[0011] Furthermore, a first spring is fitted on the outer wall of each of the four vertical rods, and a limiting block is fixedly provided at the bottom end of each of the four vertical rods, with the top end of the limiting block being fixedly connected to the bottom end of the first spring.

[0012] Furthermore, it also includes a buffer component, which includes a buffer plate. The bottom end of the buffer plate is slidably provided with a connecting seat. A plurality of second springs are fixedly provided on one side of the connecting seat, and one end of the second springs is fixedly connected to the inner side wall of the collection box.

[0013] Furthermore, the top ends of both sides of the buffer plate are rotatably connected to both sides of the inner wall of the collection box.

[0014] This utility model has the following beneficial effects:

[0015] This invention features a collection box and a separator. The collection box pre-collects the coal and gangue mixture falling from the discharge port and directs it into the discharge chute. Under the action of the discharge motor, the separator rotates, discharging the coal and gangue mixture from the discharge chute. This method allows for controlled coal and gangue feeding, preventing overload of the sorting mechanism and ensuring efficient screening. It also avoids uneven material distribution within the device, which could lead to incomplete separation of coal and gangue in certain areas. Ultimately, this results in a stable and stable sorting effect with minimal fluctuations. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the connection structure of the collection box of this utility model;

[0019] Figure 3 For the present utility model Figure 1Schematic diagram of the connection structure after removing the collection box;

[0020] Figure 4 This is a cross-sectional view of the internal connection structure of the collection box of this utility model;

[0021] Figure 5 This is a schematic diagram of the auxiliary material control component of this utility model;

[0022] Figure 6 This is a schematic diagram of the buffer component structure of this utility model.

[0023] The attached diagram lists the components represented by each number as follows:

[0024] 11. Picking rack; 12. Collection box; 121. Discharge port; 122. Discharge chute; 13. Connecting frame; 14. Fixing seat; 15. Vertical rod; 16. Protective frame; 17. Grating; 18. Vibration motor; 19. First spring; 110. Limit block; 21. Feeding motor; 22. Rotating shaft; 23. Transmission component; 24. Connecting shaft; 25. Divider plate; 31. Buffer plate; 32. Connecting seat; 33. Second spring. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0027] Please see Figure 1-6 As shown, this utility model is a controllable coal release and gangue sorting device for top coal caving faces, comprising:

[0028] The sorting rack 11 has two fixed seats 14 symmetrically arranged on both sides. The bottom of each of the four fixed seats 14 is fixed with a vertical rod 15. The outer wall of the four vertical rods 15 is provided with a protective frame 16. The inner wall of the protective frame 16 is fixed with a grid 17. The bottom of the protective frame 16 is fixed with a vibration motor 18. The inner wall of the sorting rack 11 is fixed with a collection box 12. The bottom of one side of the collection box 12 is provided with a discharge chute 122. The bottom of the collection box 12 is fixed with a connecting frame 13.

[0029] The gangue picking frame 11 is fixed on the support of the top coal caving face. Its entire structure is located below the top coal caving face. As the core load-bearing base of the device, it provides structural support for the entire gangue picking device. The vibration motor 18 adopts the ZDJ-3.0-6 model, which is used to provide the driving force required for the vibrating screening of the grid 17. The collection box 12 is located directly below the coal discharge port of the working face. It is used to pre-store the falling coal and gangue mixture and prevent the mixture from falling into the grid 17 all at once.

[0030] The auxiliary material control component includes a feeding motor 21. The output end of the feeding motor 21 is fixedly provided with a rotating shaft 22. The outer wall of the rotating shaft 22 is fixedly provided with a transmission component 23, and a connecting shaft 24 is connected through the transmission component 23. The outer wall of the connecting shaft 24 is fixedly provided with four partition plates 25.

[0031] The feeding motor 21 is a Y200L2-6 model, which is used to provide the driving force required for the rotation of the partition plate 25 to feed. The bottom end of the feeding motor 21 is fixedly installed on the inner top of the connecting frame 13. The transmission component 23 consists of a transmission belt and two transmission wheels. The inner walls of the two transmission wheels are respectively fixed on the outer walls of the rotating shaft 22 and the connecting shaft 24. The transmission belt is sleeved on the outer walls of the two transmission wheels. The four partition plates 25 are arranged in a cross shape. The height of the partition plate 25 is adapted to the height of the discharge trough 122, and a discharge cavity is formed between two adjacent partition plates 25.

[0032] A discharge port 121 is provided on one side of the bottom of the collection box 12, and the discharge port 121 is connected to the inside of the discharge trough 122;

[0033] The shape of the discharge port 121 is adapted to the discharge cavity formed by the two adjacent partition plates 25. The bottom of the collection box 12 is set with an sloping surface and faces downward toward the discharge port 121.

[0034] The top end of the rotating shaft 22 is rotatably connected to the bottom end of the collection box 12.

[0035] The outer wall of the connecting shaft 24 penetrates the bottom end of the collection box 12, and the top end of the connecting shaft 24 is rotatably connected to the top end of the discharge trough 122;

[0036] The connecting shaft 24 is rotatably coupled with the collection box 12, and the connecting shaft 24 is connected to the collection box 12 for rotation, thereby improving the overall stability of the connecting shaft 24 during rotation.

[0037] The outer walls of the four vertical rods 15 are each fitted with a first spring 19, and the bottom ends of the four vertical rods 15 are each fixed with a limiting block 110, the top end of the limiting block 110 being fixedly connected to the bottom end of the first spring 19.

[0038] The first spring 19 is used to buffer and dampen the vibration between the protective frame 16 and the vertical bar 15, reducing the transmission of vibration to the sorting rack 11 and the collection box 12.

[0039] Working principle: When the top coal is released from the top coal caving face, the mixture of top coal and gangue falls into the collection box 12 through the coal discharge port. Then, the feeding motor 21 and the vibration motor 18 are turned on respectively. The feeding motor 21 drives the rotating shaft 22 to rotate. The rotation of the rotating shaft 22 drives the connecting shaft 24 to rotate through the transmission component 23, which in turn drives the partition plate 25 to rotate. When the coal and gangue mixture in the collection box 12 enters the discharge chamber through the feeding port, it falls outwards from the partition plate 25 and falls above the grid 17. The vibration motor 18 drives the grid 17 to vibrate, thereby separating the coal and gangue mixture on the grid 17. In this way, the amount of coal and gangue can be controlled, which not only avoids the overload operation of the gangue picking mechanism and the failure of screening efficiency, but also avoids the uneven distribution of materials in the device and the incomplete separation of coal and gangue in some areas. In the end, the gangue picking effect has small fluctuations and good stability.

[0040] Please see Figure 1-6 As shown, this embodiment, based on the above embodiment, further includes:

[0041] The buffer component includes a buffer plate 31, a connecting seat 32 is slidably provided at the bottom end of the buffer plate 31, and a plurality of second springs 33 are fixedly provided on one side of the connecting seat 32, and one end of the second springs 33 is fixedly connected to the inner side wall of the collection box 12.

[0042] The top ends of the buffer plate 31 on both sides are rotatably connected to the two sides of the inner wall of the collection box 12.

[0043] Working principle: When the coal and gangue mixture falls into the collection box 12 and comes into contact with the buffer plate 31, it will drive the buffer plate 31 to rotate downward. The downward rotation of the buffer plate 31 compresses the second spring 33 through the connecting seat 32. The second spring 33 provides cushioning under its elasticity. This method can buffer and collect the falling coal and gangue mixture, preventing it from falling directly into the collection box 12 and causing damage to the collection box 12.

[0044] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A controllable caving and gangue sorting device for a top coal caving face, characterized in that, include: The sorting rack (11) has two fixed seats (14) symmetrically arranged on both sides. The bottom of each of the four fixed seats (14) is fixed with a vertical rod (15). The outer walls of the four vertical rods (15) are jointly provided with a protective frame (16). The inner wall of the protective frame (16) is fixed with a grid (17). The bottom of the protective frame (16) is fixed with a vibration motor (18). The inner wall of the sorting rack (11) is fixed with a collection box (12). The bottom of one side of the collection box (12) is provided with a discharge chute (122). The bottom of the collection box (12) is fixed with a connecting frame (13). The auxiliary material control component includes a feeding motor (21), the output end of which is fixedly provided with a rotating shaft (22), the outer wall of which is fixedly provided with a transmission component (23), and a connecting shaft (24) is connected through the transmission component (23). The outer wall of the connecting shaft (24) is fixedly provided with four partition plates (25).

2. The controllable coal release and gangue sorting device for top coal caving faces according to claim 1, characterized in that: The bottom of the collection box (12) is provided with a discharge port (121), which is connected to the inside of the discharge trough (122).

3. The controllable coal release and gangue sorting device for top coal caving faces according to claim 1, characterized in that: The top end of the rotating shaft (22) is rotatably connected to the bottom end of the collection box (12).

4. A controllable coal release and gangue sorting device for a top coal caving face according to claim 1, characterized in that: The outer wall of the connecting shaft (24) penetrates the bottom end of the collection box (12), and the top end of the connecting shaft (24) is rotatably connected to the top end of the discharge trough (122).

5. A controllable coal release and gangue sorting device for a top coal caving face according to claim 1, characterized in that: Each of the four vertical rods (15) is fitted with a first spring (19) on its outer wall, and each of the four vertical rods (15) is fixedly fitted with a limiting block (110) at its bottom end. The top end of the limiting block (110) is fixedly connected to the bottom end of the first spring (19).

6. A controllable coal release and gangue sorting device for a top coal caving face according to claim 1, characterized in that: It also includes a buffer component, which includes a buffer plate (31). A connecting seat (32) is slidably provided at the bottom end of the buffer plate (31). Several second springs (33) are fixedly provided on one side of the connecting seat (32), and one end of the second springs (33) is fixedly connected to the inner wall of the collection box (12).

7. A controllable coal release and gangue removal device for a top coal caving face according to claim 6, characterized in that: The top ends of the buffer plate (31) on both sides are rotatably connected to the two sides of the inner wall of the collection box (12).

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