Crushing device for coal mining

Abstract

The crushing device for coal mining comprises a crushing device body and a driving motor, a crushing cavity is formed in the crushing device body, a first belt wheel is fixedly installed on a transmission shaft part on the inner side of the driving motor, and the outer end of the first belt wheel is in transmission connection with a second belt wheel through a belt. A transmission main shaft is fixedly installed in the middle of the second belt wheel, a rotor is fixedly installed on the outer curved surface of the middle of the transmission main shaft, impact blocks are fixedly installed at the four corners of the rotor, a feeding port is formed in the front side of the upper end of the smashing cavity, a flow guide plate is fixedly installed at the bottom in the feeding port, and the front end of the feeding port fixedly communicates with a feeding hopper; a discharging opening is formed in the bottom of the crushing cavity; a first limiting sliding rod is movably connected to the upper end of the crushing device body in a penetrating and attaching mode. According to the utility model, coal mine raw materials are crushed, and the crushing distance between the crushing cover and the impact block is convenient to adjust.

Description

Technical Field

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

[0002] Coal mining refers to a series of production activities that extract coal resources from underground or the surface. It is a complex system engineering project encompassing multiple stages, including exploration, development, tunneling, extraction, transportation, and hoisting. The main functions of coal mining include:

[0003] Main Energy Source: Coal is a crucial component of the global energy structure, widely used in power generation and heating. Maintaining Energy Security: Possessing independent coal mining capabilities reduces dependence on imported energy. Promoting Regional Prosperity: Regions rich in coal resources can form coal-based industrial clusters, driving regional economic growth. Creating Jobs: Coal mining is a labor-intensive industry; from exploration and construction to production and operation, each stage requires a large workforce with varying skill levels, providing significant employment opportunities for local residents, promoting social stability and improving living standards. Chemical Raw Material Base: Coal is an important chemical raw material, which can be converted into various chemical products through coal chemical technology. Pillar of the Steel Industry: In steel production, coal is an indispensable reducing agent and fuel. Coke is an important raw material for ironmaking, produced by the high-temperature dry distillation of coal.

[0004] However, in practical applications of existing technologies, crushing the mined raw coal into suitable particle sizes is a crucial step in subsequent processing and transportation during coal mining. When using crushing devices to crush the mined coal raw materials, the conventional crushing devices cut the raw materials by cutting with cutting blades. However, when cutting raw materials by cutting, when the quantity of coal raw materials is large, lumpy coal raw materials tend to accumulate on the upper end of the cutting blades, making it impossible to meet the continuous batch crushing requirements of the coal raw materials, thus affecting the crushing efficiency of the coal raw materials. Utility Model Content

[0005] The purpose of this utility model is to provide a crushing device for coal mining, in order to solve the problem mentioned in the background art that the conventional crushing devices cut raw materials by cutting with cutting blades. However, when cutting raw materials by cutting, when the amount of coal raw materials is large, the blocky coal raw materials tend to accumulate on the upper end of the cutting blade, making it impossible to meet the continuous batch crushing of coal raw materials, thereby affecting the crushing efficiency of coal raw materials.

[0006] To achieve the above objectives, this utility model provides the following technical solution: It includes a crushing device body and a drive motor. The crushing device body has a crushing chamber inside. A first pulley is fixedly installed on the inner drive shaft of the drive motor. A second pulley is connected to the outer end of the first pulley via a belt drive. A drive shaft is fixedly installed in the middle of the second pulley. A rotor is fixedly installed on the outer curved surface of the drive shaft. Impact blocks are fixedly installed at the four corners of the rotor. A feed inlet is opened at the front of the upper end of the crushing chamber. A guide plate is fixedly installed at the bottom of the feed inlet. A feed hopper is fixedly connected to the front end of the feed inlet. A discharge outlet is opened at the bottom of the crushing chamber.

[0007] The upper end of the main body of the crushing device is movably connected to a first limiting slide rod. A crushing cover is fixedly installed at the bottom of the first limiting slide rod. Crushed blocks are fixedly installed inside the crushing cover. A connecting platform is fixedly installed at the top of the first limiting slide rod. A lead screw nut is fixedly installed through the middle of the connecting platform. A control motor is embedded and fixedly installed at the upper end of the main body of the crushing device. A first adjusting gear is fixedly installed on the transmission shaft of the upper end of the control motor. A second adjusting gear is meshed with the side end of the first adjusting gear. An adjusting lead screw is fixedly installed in the middle of the second adjusting gear. Second limiting slide rods are movably connected through the connecting platform on both sides.

[0008] Preferably, the drive motor is fixedly mounted on the outer side of the lower end of the crushing device body.

[0009] Preferably, the transmission main shaft is rotatably connected to the lower middle part of the crushing device body via a rotating shaft, and there are four impact blocks, which are symmetrically distributed at the four corners of the rotor. The lower end of the guide plate faces the upper end of the rotor, and the feed inlet is inclined upward.

[0010] Preferably, there are four first limiting slide rods, with two first limiting slide rods forming a group, and the two groups of first limiting slide rods are symmetrically distributed at the front and back of the upper end of the crushing device body.

[0011] Preferably, the crushing hood has an inward arc shape, and there are several crushed blocks, which are symmetrically distributed along the inner side of the crushing hood.

[0012] Preferably, the upper end of the adjusting screw is threaded to the inner wall of the screw nut.

[0013] Preferably, the bottom of the screw is rotatably connected to the upper end of the crushing device body via a rotating shaft, and the bottom of the second limiting slide rod is fixedly installed on the upper end of the crushing device body.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] When the drive motor is turned on, it sequentially drives the transmission main shaft to rotate. When the transmission main shaft rotates, it drives the rotor to rotate. When the rotor rotates, it drives the impact block to rotate at high speed. When the impact block rotates at high speed, the coal raw material to be crushed is discharged into the feed inlet through the feed hopper. When the coal raw material is discharged into the feed inlet, it is guided to the upper end of the crushing chamber rotor by the guide plate. When the coal raw material is guided to the upper end of the crushing chamber rotor, it is crushed by the impact of the high-speed rotating impact block. At the same time, the crushing hood further crushes the coal raw material after impact, so that the blocky coal raw material is crushed in a short time. The crushed coal raw material is discharged downward through the discharge port, thereby improving the crushing efficiency of the coal raw material.

[0016] This invention also features a mechanism where, when the control motor is turned on, it sequentially drives the adjusting screw to rotate. As the adjusting screw rotates, the force generated by the threaded connection between the adjusting screw and the screw nut causes the connecting platform to move linearly up and down along the second limiting slide. This linear movement of the connecting platform, in turn, causes the first limiting slide to move linearly up and down. This linear movement of the first limiting slide, in turn, causes the crushing hood to move linearly up and down. This linear movement of the crushing hood adjusts the linear distance between the crushing hood and the impact block, thereby enabling the crushing of coal raw materials while simultaneously adjusting the crushing distance between the crushing hood and the impact block, achieving the optimal crushing spacing. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of a crushing device for coal mining according to the present invention. Figure 1 ;

[0018] Figure 2 This is a schematic diagram of the overall structure of a crushing device for coal mining according to the present invention. Figure 2 ;

[0019] Figure 3 This is a cross-sectional schematic diagram of the overall structure of a crushing device for coal mining according to this utility model.

[0020] In the diagram: 1. Crushing device body; 2. Drive motor; 3. First pulley; 4. Second pulley; 5. Transmission shaft; 6. Rotor; 7. Impact block; 8. Feed inlet; 9. Guide plate; 10. Feed hopper; 11. First limiting slide bar; 12. Crushing cover; 13. Crushed block; 14. Connecting platform; 15. Screw nut; 16. Control motor; 17. First adjusting gear; 18. Adjusting screw; 19. Second adjusting gear; 20. Second limiting slide bar; 21. Crushing chamber; 22. Discharge port. Detailed Implementation

[0021] 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.

[0022] Please see Figure 1-3 This utility model provides a technical solution for a crushing device in coal mining: it includes a crushing device body 1 and a drive motor 2, and the drive motor 2 is supported and fixedly installed on the lower outer side of the crushing device body 1. A crushing chamber 21 is provided inside the crushing device body 1.

[0023] A first pulley 3 is fixedly installed on the inner drive shaft of the drive motor 2. A second pulley 4 is connected to the outer end of the first pulley 3 via a belt drive. A drive shaft 5 is fixedly installed in the middle of the second pulley 4. The drive shaft 5 is rotatably connected to the lower middle of the main body 1 of the crushing device via a rotating shaft. A rotor 6 is fixedly installed on the outer curved surface of the middle of the drive shaft 5. Impact blocks 7 are fixedly installed at the four corners of the rotor 6. There are four impact blocks 7, which are symmetrically distributed at the four corners of the rotor 6. A feed inlet 8 is opened on the front side of the upper end of the crushing chamber 21. The feed inlet 8 is inclined upward. A guide plate 9 is fixedly installed at the bottom of the feed inlet 8. The lower end of the guide plate 9 faces the upper end of the rotor 6, so that the coal raw material is guided by the guide plate 9. A feed hopper 10 is fixedly connected to the front end of the feed inlet 8. A discharge port 22 is opened at the bottom of the crushing chamber 21.

[0024] The upper end of the main body 1 of the crushing device is connected to a first limiting slide rod 11, and there are four first limiting slide rods 11. Every two first limiting slide rods 11 form a group, and the two groups of first limiting slide rods 11 are symmetrically distributed at the front and back of the upper end of the main body 1 of the crushing device. A crushing cover 12 is fixedly installed at the bottom of the first limiting slide rod 11. The crushing cover 12 is in an inward arc shape. The crushing cover 12 helps the coal move better and be impacted in the crushing chamber 21. A number of crushing blocks 13 are fixedly installed on the inner side of the crushing cover 12. The crushing blocks 13 are symmetrically distributed in sequence on the inner side of the crushing cover 12. A connecting platform 14 is fixedly installed at the top of the first limiting slide rod 11. A lead screw nut 15 is fixedly installed through the middle of the connecting platform 14. A control motor 16 is fixedly installed at the upper end of the crushing device body 1. A first adjusting gear 17 is fixedly installed on the transmission shaft of the upper end of the control motor 16. A second adjusting gear 19 is meshed with the side end of the first adjusting gear 17. An adjusting lead screw 18 is fixedly installed in the middle of the second adjusting gear 19. The upper end of the adjusting lead screw 18 is threaded to the inner wall of the lead screw nut 15. The bottom of the adjusting lead screw 18 is rotatably connected to the upper end of the crushing device body 1 through a rotating shaft. A second limiting slide rod 20 is movably connected through and fitted on both sides of the connecting platform 14. The bottom of the second limiting slide rod 20 is fixedly installed at the upper end of the crushing device body 1.

[0025] Working Principle: In use, this utility model controls the start of the drive motor 2. When the drive motor 2 is turned on, it drives the first pulley 3 to rotate. When the first pulley 3 rotates, it drives the second pulley 4 to rotate via belt transmission. When the second pulley 4 rotates, it drives the transmission shaft 5 to rotate. When the transmission shaft 5 rotates, it drives the rotor 6 to rotate. When the rotor 6 rotates, it drives the impact block 7 to rotate at high speed. When the impact block 7 rotates at high speed, the required material is fed through the feed hopper 10. The crushed coal raw material is discharged into the feed inlet 8. When the coal raw material is discharged into the feed inlet 8, it is guided to the upper end of the rotor 6 in the crushing chamber 21 by the guide plate 9. When the coal raw material is guided to the upper end of the rotor 6 in the crushing chamber 21, it is crushed by the impact of the high-speed rotating impact block 7. At the same time, the crushing hood 12 will crush the coal raw material a second time, so that the lumpy coal raw material is crushed in a short time. The crushed coal raw material will be discharged downward through the discharge port 22, thereby improving the crushing efficiency of the coal raw material.

[0026] Simultaneously, by controlling the start of the control motor 16, when the control motor 16 is turned on, it drives the first adjusting gear 17 to rotate. When the first adjusting gear 17 rotates, it meshes with and drives the second adjusting gear 19 to rotate. When the second adjusting gear 19 rotates, it drives the adjusting screw 18 to rotate. When the adjusting screw 18 rotates, the force generated by the threaded connection between the adjusting screw 18 and the screw nut 15 drives the connecting platform 14 to move vertically up and down along the second limit slide 20. When the connecting platform 14 moves vertically up and down, it drives the first limit slide 11 to move vertically up and down. When the first limit slide 11 moves vertically up and down, it drives the crushing cover 12 to move vertically up and down. When the crushing cover 12 moves vertically up and down, it adjusts the linear distance between the crushing cover 12 and the impact block 7. This allows for the crushing of coal raw materials while facilitating the adjustment of the crushing distance between the crushing cover 12 and the impact block 7, so that the crushing cover 12 and the impact block 7 achieve the optimal crushing distance.

[0027] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A coal mining with a crushing device, characterized in that: The device includes a crushing device body (1) and a drive motor (2). The crushing device body (1) has a crushing chamber (21) inside. The drive motor (2) has a first pulley (3) fixedly installed on the inner drive shaft. The outer end of the first pulley (3) is connected to a second pulley (4) via belt drive. The second pulley (4) has a drive shaft (5) fixedly installed in the middle. The drive shaft (5) has a rotor (6) fixedly installed on the outer curved surface in the middle. The rotor (6) has impact blocks (7) fixedly installed at the four corners. The crushing chamber (21) has a feed inlet (8) on the front side of the upper end. The feed inlet (8) has a guide plate (9) fixedly installed at the bottom. The feed inlet (8) has a feed hopper (10) fixedly connected to the front end. The crushing chamber (21) has a discharge port (22) at the bottom. The upper end of the main body (1) of the crushing device is connected to a first limiting slide rod (11) that is fitted and movably connected. A crushing cover (12) is fixedly installed at the bottom of the first limiting slide rod (11). A crushing block (13) is fixedly installed inside the crushing cover (12). A connecting platform (14) is fixedly installed at the top of the first limiting slide rod (11). A screw nut (15) is fixedly installed through the middle of the connecting platform (14). A control motor (16) is embedded and fixedly installed at the upper end of the main body (1). A first adjusting gear (17) is fixedly installed on the transmission shaft part of the upper end of the control motor (16). A second adjusting gear (19) is meshed with the side end of the first adjusting gear (17). An adjusting screw (18) is fixedly installed in the middle of the second adjusting gear (19). A second limiting slide rod (20) is connected through and fitted to both sides of the connecting platform (14).

2. A coal mine crushing device according to claim 1, characterized in that: The drive motor (2) is fixedly installed on the outer side of the lower end of the main body (1) of the crushing device.

3. The coal mining using crushing device according to claim 2, characterized in that: The transmission main shaft (5) is rotatably connected to the lower middle part of the crushing device body (1) via a rotating shaft. There are four impact blocks (7), which are symmetrically distributed at the four corners of the rotor (6). The lower end of the guide plate (9) faces the upper end of the rotor (6), and the feed port (8) is inclined upward.

4. The coal mining using crushing device according to claim 3, characterized in that: There are four first limiting slide bars (11), and each pair of first limiting slide bars (11) forms a group. The two groups of first limiting slide bars (11) are symmetrically distributed at the front and back of the upper end of the main body (1) of the crushing device.

5. A coal mining using crushing device as claimed in claim 4, wherein: The crushing cover (12) is in an inward arc shape, and there are several crushed blocks (13), which are symmetrically distributed on the inner side of the crushing cover (12).

6. A coal mining using crushing device according to claim 5, characterized in that: The upper end of the adjusting screw (18) is threaded to the inner wall of the screw nut (15).

7. A coal mining using crushing device as claimed in claim 6 wherein: The bottom of the screw rod (18) is rotatably connected to the upper end of the crushing device body (1) via a rotating shaft, and the bottom of the second limiting slide rod (20) is fixedly installed on the upper end of the crushing device body (1).

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