A coal mine screening device for coal mining

Abstract

The utility model discloses a coal mine screening equipment for coal mining relates to coal mine technical field, including support, the top of support is provided with the cutting assembly for cutting material, the cutting assembly includes fixed plate, the one side of fixed plate is fixedly connected with the outer wall of support, the top fixed connection of fixed plate has the protection box, the inner wall fixed mounting of protection box has first motor. The utility model discloses the intercoordination of protection box, first motor, screw rod, elevating support and baffle, cutting assembly, first motor drive screw rod rotates, through the screw thread drive of screw rod and elevating support, make elevating support drive baffle up and down movement, can according to coal mine screening work demand, accurate control baffle position, realize the cutting or release of material conveying, avoid having a group of screening machine when the failure can cut material, make material enter another group of screening machine and carry out screening work, improve work efficiency.

Description

Technical Field

[0001] This utility model relates to the field of coal mining technology, specifically to a coal screening device used in coal mining. Background Technology

[0002] In the coal mining industry, to meet the demand for high-efficiency production, two or more sets of screening machines are often used to operate simultaneously in order to improve coal screening efficiency and throughput.

[0003] The aforementioned problems are as follows: Existing coal mine screening equipment has significant deficiencies when multiple units work together. When two sets of screening machines operate in parallel, the material conveying system typically uses a unified feeding channel to deliver the material to be screened to the screening machines, lacking an effective material cutting-off device. Once one set of screening machines malfunctions, such as screen breakage, motor jamming, or transmission component damage, the material supply to the corresponding screening machine cannot be cut off in time, and a large amount of coal will continue to flow into the faulty equipment. This may not only exacerbate the damage to the equipment but also lead to material accumulation and spillage, resulting in waste of coal resources and environmental pollution. At the same time, to avoid the malfunction from escalating, operators are forced to shut down the entire screening system for maintenance, causing the other normally operating screening machine to also be forced to stop working, greatly reducing production efficiency and prolonging downtime for maintenance. Therefore, a new coal mine screening equipment for coal mine development is proposed to solve the above problems. Utility Model Content

[0004] The purpose of this utility model is to provide a coal screening device for coal mining to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0006] A coal screening device for coal mining includes a support frame. A cutting component for cutting materials is mounted on the top of the support frame. The cutting component includes a fixed plate, one side of which is fixedly connected to the outer wall of the support frame. A protective box is fixedly connected to the top of the fixed plate. A first motor is fixedly installed on the inner wall of the protective box. A fixed frame is fixedly connected to the top of the fixed plate. A screw is rotatably connected inside the fixed frame. The bottom of the screw is fixedly connected to the output end of the first motor. A lifting frame is threadedly connected to the outer wall of the screw. A baffle plate is fixedly connected to the outer wall of the lifting frame. A screening component for screening materials is mounted on the top of the support frame.

[0007] The above technical solution involves the coordinated operation of a protective box, a first motor, a screw, a lifting frame, and a baffle plate. In the cutting-off assembly, the first motor drives the screw to rotate, and through the threaded transmission between the screw and the lifting frame, the lifting frame moves the baffle plate up and down. This allows for precise control of the baffle plate position according to the coal mine screening requirements, enabling the cutting off or release of material transport. This avoids the problem of one set of screening machines malfunctioning and allows the material to be cut off, enabling it to enter another set of screening machines for screening, thus improving work efficiency.

[0008] A further improvement of this utility model is that: the interior of the protective box is provided with a lifting groove, and the interior of the lifting groove is slidably connected to the outer wall of the lifting frame.

[0009] The above technical solution involves the coordinated use of a lifting trough and a lifting frame. The lifting trough inside the protective box provides a stable guide for the movement of the lifting frame. During the process of the lifting frame driving the baffle plate to rise and fall, the lifting frame slides along the lifting trough, effectively preventing it from tilting or deviating, ensuring the smooth operation of the baffle plate, and enabling the baffle plate to precisely cooperate with components such as the discharge hopper, thus ensuring the accuracy and reliability of the cutting operation.

[0010] A further improvement of the present invention is that: a fixing block is fixedly connected to the top of the fixing plate, a storage box is fixedly connected to one side of the fixing block, a discharge hopper is fixedly installed inside the storage box, the discharge hopper is arranged symmetrically on both sides, and the outer wall of the baffle plate is in contact with the surface of the discharge hopper.

[0011] The above technical solution involves the coordinated use of a fixed block, a storage bin, and a discharge hopper. The discharge hopper within the storage bin, in conjunction with a baffle plate, enables the orderly conveying of materials. When the baffle plate rises, it blocks the material, temporarily storing it in the storage bin. When the baffle plate descends, the material flows out of the discharge hopper and into the screening assembly, regulating the material flow path and preventing spillage. Furthermore, the material conveying rate can be adjusted by controlling the baffle plate, allowing for flexible adjustments based on the screening progress.

[0012] A further improvement of the present invention is that the screening assembly includes a second motor and a screen, the bottom of the motor and the outer wall of the support are fixedly installed, a synchronous pulley is fixedly connected to the output end of the second motor, and a transmission belt is internally connected to the synchronous pulley.

[0013] By adopting the above technical solution, the second motor, synchronous pulley, and transmission belt are set up to cooperate with each other. The second motor serves as the power source for the screening components. The synchronous pulley and transmission belt stably transmit power to the rotating rods, ensuring the smooth operation of components such as the screen. The transmission method of the synchronous pulley and transmission belt enables multiple rotating rods to rotate synchronously, ensuring that the force on each part of the screen is uniform, achieving efficient and stable screening operations, and improving screening quality.

[0014] A further improvement of the present invention is that: a bearing seat is fixedly connected to the top of the bracket, a rotating rod is rotatably connected inside the bearing seat, and the outer wall of another set of synchronous pulleys is fixedly connected to the outer wall of the rotating rod.

[0015] The above technical solution involves the use of a bearing housing, a rotating rod, and the mutual cooperation of the rotating rod. The bearing housing provides stable support for the rotating rod, ensuring its stability during rotation and reducing swaying. The rotating rod is fixedly connected to the synchronous wheel, smoothly transmitting the power of the second motor and ensuring that the screen can continuously and stably perform screening operations, providing reliable transmission support for coal mine screening work.

[0016] A further improvement of this utility model is that: a protrusion is fixedly connected to one end of the rotating rod, a connecting rod is fixedly connected inside the protrusion, a connecting block is fixedly connected to one side of the screen, a linkage rod is rotatably connected inside the connecting block, and the inside of the connecting rod and the outer wall of the linkage rod are rotatably connected.

[0017] The above technical solution involves the cooperation of protrusions, connecting rods, connecting blocks, and linkage rods. The protrusions and connecting rods on the rotating rods cooperate with the linkage rods of the screen to convert the rotation of the rotating rods into the reciprocating motion of the screen, enabling the screen to flexibly perform screening actions. By reasonably adjusting the rotation speed of the rotating rods and the connection angle of the connecting rods, the movement amplitude and frequency of the screen can be changed to adapt to the screening needs of coal mines with different particle sizes, thereby improving screening efficiency and accuracy.

[0018] A further improvement of this utility model is that: a support plate is fixedly connected to the inner wall of the bracket, and a pulley is fixedly connected to the top of the support plate. There are four sets of pulleys, and the bottom four corners of the screen are in contact with the outer wall of the pulley.

[0019] By adopting the above technical solution, the four sets of pulleys on the cable support plate are in contact with the bottom of the screen through the cooperation of the support plate and the pulleys. During the movement of the screen, the pulleys can effectively reduce the friction between the screen and the support plate, reduce screen wear, and extend its service life. At the same time, the supporting effect of the pulleys keeps the screen stable during the screening process, avoids screen jamming or abnormal vibration due to excessive friction, and ensures the continuous and stable operation of the screening work.

[0020] By adopting the above technical solution, the technological progress achieved by this utility model compared with the prior art is: it avoids the problem of one set of screening machines cutting off the material when it malfunctions, allowing the material to enter another set of screening machines for screening, thereby improving work efficiency.

[0021] 1. This utility model provides a coal screening equipment used in coal mines. Through the threaded transmission between the screw and the lifting frame, the lifting frame drives the baffle plate to move up and down. The position of the baffle plate can be precisely controlled according to the needs of coal mine screening work, so as to cut off or release the material conveying. This avoids the problem of one set of screening machines malfunctioning and can cut off the material so that the material can enter another set of screening machines for screening, thereby improving work efficiency.

[0022] 2. This utility model provides a coal screening device for coal mining. By setting up protrusions, connecting rods, connecting blocks and linkage rods in cooperation, the protrusions and connecting rods on the rotating rod cooperate with the linkage rod of the screen to convert the rotation of the rotating rod into the reciprocating motion of the screen, so that the screen can flexibly perform screening actions. By reasonably adjusting the rotation speed of the rotating rod and the connection angle of the connecting rod, the movement amplitude and frequency of the screen can be changed to adapt to the screening needs of coal with different particle sizes and improve screening efficiency and accuracy. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0024] Figure 2 This is a schematic cross-sectional view of the protective box of this utility model;

[0025] Figure 3 This is a schematic diagram of the screening component structure of this utility model;

[0026] Figure 4 This is a schematic diagram of the severing component structure of this utility model.

[0027] In the diagram: 1. Bracket; 2. Fixing plate; 3. Protective box; 4. First motor; 5. Fixing frame; 6. Screw; 7. Lifting frame; 8. Baffle plate; 9. Lifting groove; 10. Fixing block; 11. Storage box; 12. Discharge hopper; 13. Second motor; 14. Screen; 15. Synchronous pulley; 16. Transmission belt; 17. Bearing seat; 18. Rotating rod; 19. Protrusion; 20. Connecting rod; 21. Connecting block; 22. Linkage rod; 23. Support plate; 24. Pulley. Detailed Implementation

[0028] The present invention will be further described in detail below with reference to embodiments:

[0029] Example 1

[0030] like Figure 1-4As shown, this utility model provides a coal screening device for coal mining, including a support 1. The top of the support 1 is provided with a cutting component for cutting off materials. The cutting component includes a fixed plate 2. One side of the fixed plate 2 is fixedly connected to the outer wall of the support 1. A protective box 3 is fixedly connected to the top of the fixed plate 2. A first motor 4 is fixedly installed on the inner wall of the protective box 3. A fixed frame 5 is fixedly connected to the top of the fixed plate 2. A screw 6 is rotatably connected inside the fixed frame 5. The bottom of the screw 6 is fixedly connected to the output end of the first motor 4. A lifting frame 7 is threadedly connected to the outer wall of the screw 6. A baffle plate 8 is fixedly connected to the outer wall of the lifting frame 7. A screening component for screening materials is provided on the top of the support 1. A lifting groove 9 is opened inside the protective box 3. The interior of the lifting groove 9 is slidably connected to the outer wall of the lifting frame 7.

[0031] In this embodiment, by setting up the protective box 3, the first motor 4, the screw 6, the lifting frame 7, and the baffle plate 8 in cooperation, the first motor 4 drives the screw 6 to rotate in the cutting assembly. Through the threaded transmission between the screw 6 and the lifting frame 7, the lifting frame 7 drives the baffle plate 8 to move up and down. The position of the baffle plate 8 can be precisely controlled according to the needs of coal mine screening, so as to cut off or release the material conveying. This avoids the problem of one set of screening machines cutting off the material when it fails, allowing the material to enter another set of screening machines for screening, thus improving work efficiency. By setting up the lifting groove 9 and the lifting frame 7 in cooperation, the lifting groove 9 in the protective box 3 provides a stable guide for the movement of the lifting frame 7. During the process of the lifting frame 7 driving the baffle plate 8 to rise and fall, the lifting frame 7 slides along the lifting groove 9, effectively preventing it from tilting or deviating, ensuring that the baffle plate 8 runs smoothly, and ensuring that the baffle plate 8 and the discharge hopper 12 and other components cooperate precisely, thus ensuring the accuracy and reliability of the cutting operation.

[0032] Example 2

[0033] like Figure 1-4As shown, based on Embodiment 1, this utility model provides a technical solution: Preferably, a fixing block 10 is fixedly connected to the top of the fixing plate 2, a storage box 11 is fixedly connected to one side of the fixing block 10, a discharge hopper 12 is fixedly installed inside the storage box 11, the discharge hopper 12 is arranged symmetrically on both sides, the outer wall of the baffle plate 8 is in contact with the surface of the discharge hopper 12, the screening assembly includes a second motor 13 and a screen 14, the bottom of the motor is fixedly installed to the outer wall of the support 1, a synchronous pulley 15 is fixedly connected to the output end of the second motor 13, a transmission belt 16 is internally connected to the synchronous pulley 15, and a bearing is fixedly connected to the top of the support 1. The bearing seat 17 has a rotating rod 18 rotatably connected inside. The outer wall of another set of synchronous pulleys 15 is fixedly connected to the outer wall of the rotating rod 18. One end of the rotating rod 18 is fixedly connected to a protrusion 19. The protrusion 19 is fixedly connected to a connecting rod 20. One side of the screen 14 is fixedly connected to a connecting block 21. The connecting block 21 is rotatably connected to a linkage rod 22. The connecting rod 20 is rotatably connected to the outer wall of the linkage rod 22. The inner wall of the bracket 1 is fixedly connected to a support plate 23. The top of the support plate 23 is fixedly connected to a pulley 24. There are four sets of pulleys 24. The four bottom corners of the screen 14 are in contact with the outer wall of the pulley 24.

[0034] In this embodiment, by setting up the fixed block 10, the storage box 11, and the discharge hopper 12 in cooperation, the discharge hopper 12 in the storage box 11, in conjunction with the baffle plate 8, realizes the orderly conveying of materials. When the baffle plate 8 rises, it can block the material and temporarily store the material in the storage box 11; after the baffle plate 8 falls, the material flows out from the discharge hopper 12 and enters the screening component, which regulates the material flow path and avoids material spillage. At the same time, the material conveying amount can be adjusted by controlling the baffle plate 8, which is convenient for flexible adjustment according to the screening progress. By setting up the cooperation of the second motor 13, the synchronous pulley 15, and the transmission belt 16, the first The second motor 13 serves as the power source for the screening assembly. Through the synchronous pulley 15 and transmission belt 16, it stably transmits power to the rotating rods 18, ensuring smooth operation of components such as the screen 14. The transmission method of the synchronous pulley 15 and transmission belt 16 allows multiple rotating rods 18 to rotate synchronously, ensuring uniform force distribution across all parts of the screen 14, achieving efficient and stable screening operations, and improving screening quality. By setting up bearing seats 17, the rotating rods 18, and their mutual cooperation, the bearing seats 17 provide stable support for the rotating rods 18, keeping them stable during rotation and reducing swaying. The rotating rods 18 and the synchronous pulley... 15 is fixedly connected to ensure smooth power transmission from the second motor 13, guaranteeing continuous and stable screening of the screen 14 and providing reliable transmission for coal mine screening operations. Through the cooperation of protrusions 19, connecting rods 20, connecting blocks 21, and linkage rods 22, the protrusions 19 and connecting rods 20 on the rotating rod 18, in conjunction with the linkage rods 22 of the screen 14, convert the rotation of the rotating rod 18 into the reciprocating motion of the screen 14, enabling the screen 14 to flexibly perform screening operations. By reasonably adjusting the rotational speed of the rotating rod 18 and the connection angle of the connecting rod 20, the rotation of the screen 14 can be changed. The range and frequency of movement are adapted to the screening needs of coal mines with different particle sizes, improving screening efficiency and accuracy. Through the cooperation of the support plate 23 and pulleys 24, the four sets of pulleys 24 on the cable support plate 23 contact the bottom of the screen 14. During the movement of the screen 14, the pulleys 24 can effectively reduce the friction between the screen 14 and the support plate 23, reduce the wear of the screen 14, and extend its service life. At the same time, the supporting effect of the pulleys 24 keeps the screen 14 stable during the screening process, avoiding the screen 14 from jamming or abnormal vibration due to excessive friction, and ensuring the continuous and stable operation of the screening work.

[0035] The working principle of the coal screening equipment used in this coal mine will be explained in detail below.

[0036] like Figure 1-4As shown, when coal and mineral materials are conveyed to the storage bin 11, the first motor 4 inside the protective box 3 is started. The output end of the first motor 4 drives the screw 6 to rotate. Since the screw 6 is threadedly connected to the lifting frame 7, the rotation of the screw 6 causes the lifting frame 7 to move vertically in the lifting groove 9 of the protective box 3, thereby driving the baffle plate 8 fixed on the lifting frame 7 to rise and fall synchronously. When it is necessary to cut off the material, the first motor 4 drives the screw 6 to make the baffle plate 8 rise and fit tightly against the surface of the discharge hopper 12 to prevent the material from flowing out of the discharge hopper 12. If it is necessary to release the material, the screw 6 rotates in the opposite direction, the baffle plate 8 descends, and the material can flow out smoothly from the discharge hopper 12, thereby accurately controlling the material flow rate entering the screening component.

[0037] After the material flows out of the discharge hopper 12, it falls onto the screen 14. At this time, the second motor 13 on the outer wall of the support 1 starts, and its output end drives the synchronous wheel 15 to rotate. The power is transmitted to another set of synchronous wheels 15 through the transmission belt 16, which in turn drives the rotating rod 18 to rotate. The protrusion 19 and connecting rod 20 at one end of the rotating rod 18 cooperate with the linkage rod 22 of the screen 14 to convert the circular motion of the rotating rod 18 into the reciprocating motion of the screen 14. Under the support of four sets of pulleys 24, the screen 14 smoothly performs the back-and-forth reciprocating screening action. The pulleys 24 effectively reduce the friction between the screen 14 and the support plate 23, ensuring that the screen 14 moves smoothly.

[0038] During the movement of screen 14, coal and mineral materials of different particle sizes are graded and screened due to the vibration of screen 14 and the screening effect of screen holes. Coal that meets the particle size requirements passes through screen 14 and falls down, while materials that do not meet the requirements remain on screen 14, waiting for further processing or re-screening. Through the precise control of material flow by the cutting component, combined with the efficient screening action of the screening component, the material conveying can be cut off or released. This avoids the problem of one set of screening machines malfunctioning and can cut off the material, allowing the material to enter another set of screening machines for screening, thus improving work efficiency.

[0039] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A coal screening device used in coal mining, comprising a support frame (1), characterized in that: The top of the support (1) is provided with a cutting component for cutting off materials. The cutting component includes a fixing plate (2). One side of the fixing plate (2) is fixedly connected to the outer wall of the support (1). The top of the fixing plate (2) is fixedly connected to a protective box (3). The inner wall of the protective box (3) is fixedly installed with a first motor (4). The top of the fixing plate (2) is fixedly connected to a fixing frame (5). The inside of the fixing frame (5) is rotatably connected to a screw (6). The bottom of the screw (6) is fixedly connected to the output end of the first motor (4). The outer wall of the screw (6) is threadedly connected to a lifting frame (7). The outer wall of the lifting frame (7) is fixedly connected to a baffle plate (8). The top of the support (1) is provided with a screening component for screening materials.

2. The coal screening equipment used in coal mining according to claim 1, characterized in that: The protective box (3) has a lifting groove (9) inside, and the inside of the lifting groove (9) is slidably connected to the outer wall of the lifting frame (7).

3. The coal screening equipment used in coal mining according to claim 1, characterized in that: A fixing block (10) is fixedly connected to the top of the fixing plate (2), and a storage box (11) is fixedly connected to one side of the fixing block (10). A discharge hopper (12) is fixedly installed inside the storage box (11). The discharge hopper (12) is arranged symmetrically on both sides, and the outer wall of the baffle plate (8) is in contact with the surface of the discharge hopper (12).

4. The coal screening equipment used in coal mining according to claim 1, characterized in that: The screening assembly includes a second motor (13) and a screen (14). The bottom of the motor is fixedly installed on the outer wall of the support (1). The output end of the second motor (13) is fixedly connected to a synchronous pulley (15). The synchronous pulley (15) is internally connected to a transmission belt (16).

5. A coal screening device for coal mining according to claim 4, characterized in that: The top of the bracket (1) is fixedly connected to a bearing seat (17), and a rotating rod (18) is rotatably connected inside the bearing seat (17). The outer wall of another set of synchronous pulleys (15) is fixedly connected to the outer wall of the rotating rod (18).

6. A coal screening device for coal mining according to claim 5, characterized in that: One end of the rotating rod (18) is fixedly connected to a protrusion (19), and a connecting rod (20) is fixedly connected inside the protrusion (19). A connecting block (21) is fixedly connected to one side of the screen (14), and a linkage rod (22) is rotatably connected inside the connecting block (21). The inside of the connecting rod (20) and the outer wall of the linkage rod (22) are rotatably connected.

7. A coal screening device for coal mining according to claim 4, characterized in that: The inner wall of the bracket (1) is fixedly connected to a support plate (23), and the top of the support plate (23) is fixedly connected to a pulley (24). There are four sets of pulleys (24), and the bottom four corners of the screen (14) are in contact with the outer wall of the pulley (24).

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