A crushing device for coal mining

Abstract

The utility model relates to the technical field of coal mine crushing, particularly to a crushing device for coal mining. The utility model has the advantages that the coal can be guided into the feed box through the feed hopper, the coal enters through the dustproof curtain, the dust adhering to the surface can be blown off after the coal passes through the air curtain spray pipe, the dust leakage can be reduced through the dustproof curtain, the opening can be closed and the dust leakage can be reduced through the vertical air curtain formed by the air curtain spray pipe, the adhering dust blown off can quickly enter along the inclined surface of the feed hopper, the leakage is reduced, the dust discharge door closed by the weight of the bottom can reduce the opening space and reduce the dust leakage, the dust in the coal during the falling process after crushing can be sucked away through the air extractor, the dust suction pipe and the dust suction hood, the dust is injected into the filter water tank through the air inlet elbow pipe, the dust is injected into the water, the dust is attached to the water, the gas passes through the water body to be discharged, the coal powder is gathered to the filter water tank to form the coal slime, and the coal slime is conveniently collected and reused.

Description

Technical Field

[0001] This utility model relates to the field of coal mine crushing technology, and in particular to a crushing device used in coal mine development. Background Technology

[0002] In open-pit coal mining operations, coal crushing is a crucial step, aiming to break the large chunks of coal into particles suitable for subsequent transportation, washing, and utilization. With the rapid development of the coal industry and the continuous expansion of open-pit coal mining scale, increasingly stringent requirements are being placed on dust control in coal crushing equipment.

[0003] Currently, most coal mine crushing equipment uses spraying to reduce dust. However, spraying can turn coal dust into coal slurry, which can adhere to the crushing teeth, affecting the crushing effect and causing blockages after accumulation. In addition, spraying increases water consumption. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a crushing device for coal mining, which effectively solves the deficiencies of the prior art.

[0005] The objective of this utility model is achieved through the following technical solution: A crushing device for coal mining includes a crushing box, inside which crushing components are installed. A feed box is fixedly connected to the top of the crushing box, and the bottom of the feed box has a funnel-shaped structure, which connects the bottom of the feed box to the interior of the crushing box. A feed opening is provided on one side of the feed box, and an inclined feed hopper is fixedly connected to the side of the feed box near the bottom of the feed opening. The width of the feed hopper matches the width of the feed opening. A dust curtain is fixedly connected to the top of the inner wall of the feed opening. An air curtain nozzle is fixedly connected to the top of the inner wall of the feed box near the bottom of the inner wall of the feed hopper, with the output end of the air curtain nozzle corresponding to the bottom of the inner wall of the feed hopper. An air pump is fixedly connected to the top of one side of the outer wall of the feed box. The output end is fixedly connected to the input end of the air curtain nozzle. The bottom of the crushing box is provided with a discharge ramp structure. A discharge port is opened on the bottom side of the crushing box. A dustproof discharge door is rotatably connected to the top of the inner wall of the discharge port. A dust suction hood is fixedly connected to the bottom of the crushing component on one side of the crushing box. The suction end of the dust suction hood is connected to the inside of the crushing box. An air extractor and a filter water tank are provided on one side of the bottom of the crushing box. An air extraction pipe is fixedly connected to the suction end of the air extractor. The suction end of the air extraction pipe is fixedly connected to the inside of the dust suction hood and communicates with it. An air inlet elbow is fixedly connected to the top of one side of the filter water tank. The output end of the air inlet elbow is located at the bottom of the inner wall of the filter water tank. A quick-release connector is fixedly connected to the suction end of the air inlet elbow. The output end of the air extractor is fixedly connected to the input end of the air inlet elbow through the quick-release connector and communicates with it.

[0006] Preferably, in any of the above embodiments, the crushing assembly includes crushing rollers rotatably connected to the top two sides of the inner wall of the crushing box, the two crushing rollers are symmetrically arranged, the position between the two crushing rollers corresponds to the position of the output end of the funnel-shaped structure at the bottom of the feed box, and the length of the two crushing rollers is adapted to the width of the inner wall of the crushing box.

[0007] The technical effect achieved by adopting the above scheme is that the falling coal can completely enter between the two crushing rollers, and the coal can be crushed by the relative rotation of the two crushing rollers.

[0008] Preferably, one end of the central shaft of each of the two crushing rollers extends out of the crushing box and is fixedly connected to a transmission gear. The two transmission gears mesh with each other. A reduction motor is fixedly connected to one side of the outer wall of the crushing box, and the output end of the reduction motor is fixedly connected to one end of the central shaft of any one of the two crushing rollers.

[0009] The technical effect achieved by adopting the above solution is that, through the rotation of the transmission gear, any crushing roller can be synchronously rotated relative to each other when driven by the reduction motor, so as to carry out crushing.

[0010] Preferably, in any of the above embodiments, the size of the dust curtain is adapted to the size of the feed opening, the length of the air curtain nozzle is adapted to the width of the feed hopper, and a filter screen is fixedly connected to the suction end of the dust suction hood.

[0011] The technical effect achieved by adopting the above solution is that the width of the air curtain output by the dust curtain and air curtain nozzle can completely cover the width of the feed hopper, and the filter screen can prevent large pieces of coal from being sucked in, thus improving safety.

[0012] Preferably, in any of the above schemes, the width of the feed box is adapted to the width of the crushing box, the bottom of the discharge port corresponds to the bottom of the discharge ramp structure, the size of the dustproof discharge door is adapted to the size of the discharge port, and the dustproof discharge door closes by its own weight.

[0013] The technical effect achieved by adopting the above solution is that the coal that falls to the bottom of the crushing box after crushing can be discharged through the discharge port. At the same time, the dustproof discharge door, which closes by its own weight, can be pushed open when the coal falls, reducing the opening space and reducing dust leakage.

[0014] This utility model has the following advantages: 1. The crushing device used in this coal mine guides coal into the feed box through the feed hopper. The coal enters through the dust curtain and passes through the air curtain nozzles, which blow off the dust adhering to the surface. The dust curtain reduces dust leakage, and the vertical air curtain formed by the air curtain nozzles can close the opening, reducing dust leakage. Moreover, the dust adhering to the feed hopper can quickly enter along the inclined surface of the feed hopper, reducing leakage. In addition, the dust discharge door at the bottom, which is closed by its own weight, can be pushed open when the coal falls, reducing the opening space and reducing dust leakage.

[0015] 2. The crushing device used in this coal mine can remove dust from the coal during the crushing and falling process through an air extractor, air extraction pipe, and dust suction hood. The dust is then injected into the filter water tank through the air inlet elbow pipe, where it adheres to the water. This allows the gas to pass through the water body and be discharged. The water filtration reduces water waste and allows coal dust to accumulate in the filter water tank to form coal slurry, which is convenient for centralized collection and reuse. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the internal structure of the present invention; Figure 3 This utility model Figure 2 Schematic diagram of the cross-sectional structure at point AA; Figure 4This is a side view of the structure of this utility model.

[0017] In the diagram: 1-Crushing box, 2-Feeding box, 3-Dustproof curtain, 4-Feeding hopper, 5-Air pump, 6-Discharge port, 7-Dustproof discharge door, 8-Gear motor, 9-Extraction pipe, 10-Extraction fan, 11-Quick-release connector, 12-Inlet elbow pipe, 13-Filter water tank, 14-Dust hood, 15-Discharge ramp structure, 16-Crushing roller, 17-Transmission gear, 18-Air curtain nozzle. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings, but the scope of protection of the present invention is not limited to the following description.

[0019] like Figures 1 to 4 As shown, a crushing device used in coal mining includes a crushing box 1, inside which crushing components are installed. A feed box 2 is fixedly connected to the top of the crushing box 1. The bottom of the feed box 2 has a funnel-shaped structure, and the bottom of the feed box 2 is connected to the interior of the crushing box 1 through the funnel-shaped structure. A feed opening is opened on one side of the feed box 2. An inclined feed hopper 4 is fixedly connected to the side of the feed box 2 near the bottom of the feed opening. The width of the feed hopper 4 is adapted to the width of the feed opening. A dust curtain 3 is fixedly connected to the top of the inner wall of the feed opening. An air curtain nozzle 18 is fixedly connected to the top of the inner wall of the feed box 2 near the bottom of the inner wall of the feed hopper 4. The output end of the air curtain nozzle 18 corresponds to the position of the bottom of the inner wall of the feed hopper 4. An air pump 5 is fixedly connected to the top of one side of the outer wall of the feed box 2. The output end of the air pump 5 is fixedly connected to the input end of the air curtain nozzle 18. The bottom of the crushing box 1 is provided with a discharge ramp structure 15. A discharge port 6 is opened on the bottom side of the crushing box 1. A dustproof discharge door 7 is rotatably connected to the top of the inner wall of the discharge port 6. A dust suction hood 14 is fixedly connected to the bottom of the crushing component on one side of the crushing box 1. The suction end of the dust suction hood 14 is connected to the inside of the crushing box 1. A vacuum pump 10 and a filter water tank 13 are provided on one side of the bottom of the crushing box 1. A vacuum pipe 9 is fixedly connected to the suction end of the vacuum pump 10. The suction end of the vacuum pipe 9 is fixedly connected to the inside of the dust suction hood 14 and communicates with it. An air inlet elbow pipe 12 is fixedly connected to the top of one side of the filter water tank 13. The output end of the air inlet elbow pipe 12 is located at the bottom of the inner wall of the filter water tank 13. A quick-release connector 11 is fixedly connected to the suction end of the air inlet elbow pipe 12. The output end of the vacuum pump 10 is fixedly connected to the input end of the air inlet elbow pipe 12 through the quick-release connector 11 and communicates with it.

[0020] As an optional technical solution of this utility model: the crushing component includes crushing rollers 16 rotatably connected to the top two sides of the inner wall of the crushing box 1. The two crushing rollers 16 are symmetrically arranged, and the position between the two crushing rollers 16 corresponds to the position of the output end of the funnel-shaped structure at the bottom of the feed box 2. The length of the two crushing rollers 16 is adapted to the width of the inner wall of the crushing box 1, so that the falling coal can completely enter between the two crushing rollers 16. The crushing of the coal can be achieved by the relative rotation of the two crushing rollers 16.

[0021] As an optional technical solution of this utility model: one end of the central shaft of the two crushing rollers 16 extends through the outside of the crushing box 1 and is fixedly connected to a transmission gear 17. The two transmission gears 17 are meshed with each other. A reduction motor 8 is fixedly connected to one side of the outer wall of the crushing box 1. The output end of the reduction motor 8 is fixedly connected to one end of the central shaft of any one of the two crushing rollers 16. By rotating the transmission gear 17, any crushing roller 16 can be driven by the reduction motor 8 to rotate synchronously relative to each other and perform crushing.

[0022] As an optional technical solution of this utility model: the size of the dust curtain 3 is adapted to the size of the feed opening, the length of the air curtain nozzle 18 is adapted to the width of the feed hopper 4, and a filter screen is fixedly connected to the suction end of the dust hood 14, so that the width of the air curtain output by the dust curtain 3 and the air curtain nozzle 18 can completely cover the width of the feed hopper 4. The filter screen can prevent large pieces of coal from being sucked in, thus improving safety.

[0023] As an optional technical solution of this utility model: the width of the feed box 2 is adapted to the width of the crushing box 1, the bottom of the discharge port 6 corresponds to the bottom of the discharge ramp structure 15, the size of the dustproof discharge door 7 is adapted to the size of the discharge port 6, and the dustproof discharge door 7 closes by its own weight, so that the coal that falls to the bottom of the crushing box 1 after crushing can be discharged through the discharge port 6. At the same time, the dustproof discharge door 7, which closes by its own weight, can be pushed open when the coal falls, reducing the opening space and reducing dust leakage.

[0024] The working process of this utility model is as follows: When the user uses it... 1) Coal can be guided into the feed box 2 through the feed hopper 4. The coal enters through the dust curtain 3 and can be blown off the dust adhering to the surface after passing through the air curtain nozzle 18. The dust curtain 3 can reduce dust leakage. 2) The incoming coal enters the crushing component for crushing, and after crushing, it falls to the bottom of the crushing box 1 and is discharged through the discharge port 6. 3) The dust in the coal during the crushing and falling process can be sucked away by the air extractor 10, the air extraction pipe 9 and the dust suction hood 14, and the dust is injected into the filter water tank 13 through the air inlet elbow pipe 12, so that the dust is injected into the water and attached to the water, and the gas is discharged through the water body.

[0025] In summary, this utility model guides coal into the feed box 2 via the feed hopper 4. The coal enters through the dust curtain 3 and is blown off by the air curtain nozzle 18. The dust curtain 3 reduces dust leakage, and the vertical air curtain formed by the air curtain nozzle 18 can close the opening, further reducing dust leakage. Moreover, the blown-off dust can quickly enter along the inclined surface of the feed hopper 4, reducing leakage. The dust discharge door 7, which closes due to its own weight at the bottom, can be pushed open when the coal falls, reducing the opening space and lowering dust leakage. The exhaust fan 10, exhaust pipe 9, and dust hood 14 can suck away the dust in the coal during the crushing and falling process, and inject the dust into the filter water tank 13 through the air inlet elbow pipe 12. The dust is injected into the water and adheres to it, allowing the gas to pass through the water and be discharged. The water storage and filtration reduces water waste, and the coal dust can be collected in the filter water tank 13 to form coal slurry, which is convenient for centralized collection and reuse.

[0026] 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 crushing device used in coal mining, characterized in that: The system includes a crushing box (1), which contains a crushing assembly. A feed box (2) is fixedly connected to the top of the crushing box (1). The bottom of the feed box (2) has a funnel-shaped structure and is connected to the interior of the crushing box (1) through the funnel-shaped structure. A feed opening is provided on one side of the feed box (2). An inclined feed hopper (4) is fixedly connected to the side of the feed box (2) near the bottom of the feed opening. The width of the feed hopper (4) is the same as the width of the feed opening. To match, a dustproof curtain (3) is fixedly connected to the top of the inner wall of the feed opening, and an air curtain nozzle (18) is fixedly connected to the top of the inner wall of the feed box (2) near the bottom of the inner wall of the feed hopper (4). The output end of the air curtain nozzle (18) corresponds to the bottom of the inner wall of the feed hopper (4). An air pump (5) is fixedly connected to the top of one side of the outer wall of the feed box (2), and the output end of the air pump (5) is fixedly connected to the input end of the air curtain nozzle (18). The bottom of the crushing box (1) is provided with a dustproof curtain nozzle (3). The crushing box (1) has a discharge ramp structure (15). A discharge port (6) is provided at the bottom of one side of the crushing box (1). A dustproof discharge door (7) is rotatably connected to the top of the inner wall of the discharge port (6). A dust suction hood (14) is fixedly connected to one side of the crushing box (1) at the bottom of the crushing assembly. The suction end of the dust suction hood (14) is connected to the inside of the crushing box (1). A vacuum pump (10) and a filter water tank (13) are provided on one side of the bottom of the crushing box (1). The suction end of the vacuum pump (10) is fixedly connected to the bottom of the crushing box (1). A suction pipe (9) is connected to the inside of the dust hood (14), and the suction end of the suction pipe (9) is fixedly connected to and communicates with the inside of the dust hood (14). An air inlet elbow pipe (12) is fixedly connected to the top of one side of the filter water tank (13). The output end of the air inlet elbow pipe (12) is located at the bottom of the inner wall of the filter water tank (13). A quick-release connector (11) is fixedly connected to the suction end of the air inlet elbow pipe (12). The output end of the air pump (10) is fixedly connected to and communicates with the input end of the air inlet elbow pipe (12) through the quick-release connector (11).

2. The crushing device for coal mining according to claim 1, characterized in that: The crushing assembly includes crushing rollers (16) rotatably connected to the top two sides of the inner wall of the crushing box (1). The two crushing rollers (16) are symmetrically arranged, and the position between the two crushing rollers (16) corresponds to the position of the output end of the funnel-shaped structure at the bottom of the feed box (2). The length of the two crushing rollers (16) is adapted to the width of the inner wall of the crushing box (1).

3. The crushing device for coal mining according to claim 2, characterized in that: One end of the central shaft of each of the two crushing rollers (16) extends through the outside of the crushing box (1) and is fixedly connected to a transmission gear (17). The two transmission gears (17) mesh with each other. A reduction motor (8) is fixedly connected to one side of the outer wall of the crushing box (1). The output end of the reduction motor (8) is fixedly connected to one end of the central shaft of any one of the two crushing rollers (16).

4. The crushing device for coal mining according to claim 1, characterized in that: The size of the dust curtain (3) is adapted to the size of the feed opening, the length of the air curtain nozzle (18) is adapted to the width of the feed hopper (4), and the suction end of the dust suction hood (14) is fixedly connected with a filter screen.

5. The crushing device for coal mining according to claim 1, characterized in that: The width of the feed box (2) is adapted to the width of the crushing box (1), the bottom of the discharge port (6) corresponds to the bottom of the discharge ramp structure (15), the size of the dustproof discharge door (7) is adapted to the size of the discharge port (6), and the dustproof discharge door (7) closes by its own weight.

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