A coal mining breaking device

Abstract

The utility model relates to crushing device technical field discloses a kind of coal mining crushing device, including box, its upper end is provided with feed inlet, its side wall close to lower end is provided with discharge port, at least one tooth roll is relatively rotated along horizontal direction in its inside;Power transmission assembly, it is laid in the side wall of box, it is used to drive tooth roll rotation;Specific filter function's dust cover, it is laid in the circumferential side of power transmission assembly, its side wall is provided with several air holes, and it is connected with the side wall of box;And filter dust-reducing component, it is communicated with the side wall of box, it is used to filter dust in box.In the process of coal briquettes crushing, the utility model can enhance the protection to power transmission structure.

Description

Technical Field

[0001] This utility model relates to the field of crushing equipment technology, and in particular to a crushing equipment for coal mining. Background Technology

[0002] Coal mines are areas where humans extract coal resources in coal-rich areas. They are generally divided into underground coal mines and open-pit coal mines. When the coal seam is far from the surface, underground tunnels are typically dug to extract the coal; this is called an underground coal mine. When the coal seam is very close to the surface, the surface soil layer is typically stripped away to extract the coal; this is called an open-pit coal mine. Coal is very large when it is mined, so crushing equipment is usually used to crush it to facilitate the storage and transportation of raw coal. This reduces the space occupied by the coal mine and speeds up the mining process.

[0003] Patent CN220547003U discloses a coal mining crushing device. In use, workers first feed coal into the inlet. Toxic gases from the inlet are drawn in through a filter screen by a second suction device and then into an exhaust pipe. The gases then flow through the exhaust pipe to the bottom of the reaction chamber. The coal is first crushed by a double-toothed roller, and then falls to the pressure roller for a second crushing. After both crushing processes, the coal falls into the container via a guide frame. At the bottom of the chamber, the toxic gases produced during this process are drawn into the exhaust pipe through the filter screen by the suction device. Then, they enter the bottom of the reaction chamber through the exhaust pipe. The toxic gases at the bottom react chemically with the reactants coming in from the feed inlet and the water coming in from the water inlet. At the same time, the stirring rod stirs the mixture to accelerate the reaction. The non-toxic and harmless gas obtained after the chemical reaction is finally discharged to the outside through the exhaust pipe. The crushed coal can be transported out through the door, and the remaining residue can be discharged through the discharge pipe. However, the above-mentioned device has the following defects in use. The coal mining site is filled with a large amount of dust particles. The motor, driven gear one, driving gear two, driven gear two, pulleys, and transmission belt are exposed to such an environment for a long time. Dust easily adheres to their surfaces. In the gear transmission system, the increased friction and wear caused by dust will reduce the transmission accuracy of the gears, resulting in phenomena such as jamming and impact. This unstable transmission will further affect the operation of the double toothed roller and pressure roller, leading to uneven coal crushing and reducing the production efficiency of the equipment. In terms of belt drive, belt wear and slippage will make the power transmission unstable, making it impossible to guarantee the normal rotation speed of driving gear two and driven gear two, which will also affect the continuity and stability of the entire crushing device.

[0004] Therefore, how to enhance the protection of the power transmission structure during the coal crushing process has become a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] The present invention aims to provide a coal mining crushing device to overcome the shortcomings mentioned above.

[0006] To achieve the above objectives, the technical solution of this utility model is: a coal mining crushing device, comprising:

[0007] The box has a feed inlet at the top and a discharge outlet on the side wall near the bottom. Inside, at least one toothed roller rotates horizontally relative to the other.

[0008] A power transmission assembly is disposed on the side wall of the housing and is used to drive the toothed roller to rotate;

[0009] The dust cover with specific filtration function is arranged around the power transmission assembly, and its side wall has several ventilation holes, and it is connected to the side wall of the housing; and

[0010] A dust filter assembly, which is connected to the side wall of the housing, is used to filter dust inside the housing;

[0011] A filter screen is detachably connected inside the dust cover. The filter screen and the vent are arranged opposite each other. The dust cover and the discharge port are misaligned. The dust cover and the side wall of the box are detachably connected.

[0012] Furthermore, the housing contains two toothed rollers that rotate relative to each other in the horizontal direction. The power transmission assembly includes a driving gear, a driven gear, and a motor. The rotating shaft of one of the toothed rollers protrudes from the housing and is fixedly connected to the driving gear. The rotating shaft of the other toothed roller protrudes from the housing and is fixedly connected to the driven gear. The driving gear and the driven gear are meshed with each other. A support frame is provided on the side wall of the housing. The support frame is fixedly connected to the motor. The output shaft of the motor is fixedly connected to the side wall of the driving gear.

[0013] Furthermore, a screening component is provided inside the box, and the screening component is located between the discharge port and the toothed roller. A screening port is provided on the side wall of the box, and the screening port and the guide end of the screening component are arranged opposite to each other. A recycling box is connected to the side wall of the box, and the recycling box is connected to the screening port. The dust filtering component is arranged at the upper end of the recycling box.

[0014] Furthermore, the screening assembly includes a screening mesh and a vibrator. The screening mesh is inclinedly disposed within the housing. The vibrator is disposed at the lower end of the frame of the screening mesh. One end of the screening mesh is hinged to the side wall of the housing, and the screening port is disposed opposite to one end of the screening mesh. At least one end plate is fixedly connected to the lower part of the other end of the screening mesh. At least one support plate is fixedly connected to the inner side wall of the housing. The end plate and the support plate are disposed in a one-to-one correspondence. A buffer assembly is hinged between the end plate and the support plate.

[0015] Furthermore, the buffer assembly includes a fixed sleeve, a fixed rod, and a spring. The fixed sleeve contains the spring, and both ends of the spring are fixedly connected to the bottom of the fixed sleeve and one end of the fixed rod, respectively. One end of the fixed sleeve is slidably sleeved on the periphery of one end of the fixed rod. The other end of the fixed rod is hinged to an end plate, and the other end of the fixed sleeve is hinged to a support plate.

[0016] Furthermore, the dust filtration assembly includes an exhaust fan and a water tank. The exhaust fan and the water tank are both located at the upper end of the recycling bin. The exhaust pipe of the exhaust fan is connected to the side wall of the bin and is located below the toothed roller. The air supply pipe of the exhaust fan is connected to the water tank and extends to the bottom of the water tank. An exhaust port is provided at the upper end of the water tank.

[0017] Furthermore, the recycling bin is equipped with a first bin door with a locking function.

[0018] Furthermore, a second door with a handle is hinged to the upper end of the discharge port, an inclined plate is provided at the bottom of the box body with the lower end of the inclined plate facing the discharge port, and a third door with a locking function is provided in the box body.

[0019] Compared with the prior art, this utility model has at least the following advantages: During use, coal blocks are fed into the box from the feed inlet at the top of the box. The power transmission component drives the toothed roller to rotate horizontally relative to each other to crush the incoming coal blocks. In the dusty environment of coal mining, in order to ensure the stable operation of the power transmission component, the device is equipped with multiple protective measures. First, a dust cover with a specific filtration function tightly surrounds the power transmission component and is firmly connected to the side wall of the box, forming the first line of defense. At the same time, the dust filtration component is connected to the side wall of the box and filters the dust raised in the box due to the crushing of coal blocks in real time, reducing the dust content from the source and reducing the probability of dust entering the protective space of the power transmission component. The dual protection mechanism works together to greatly reduce the impact of dust on the power transmission structure. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in 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.

[0021] Figure 1 This is a schematic diagram of the overall structure of the coal mining and crushing device of this utility model;

[0022] Figure 2 This is a schematic diagram of the overall structure of the coal mining and crushing device of this utility model from another angle.

[0023] Figure 3 This is a cross-sectional view of the coal mining crushing device of this utility model;

[0024] Figure 4 This is a schematic diagram of the structure of the housing and toothed roller of this utility model;

[0025] Figure 5 This is a schematic diagram of the structure of the housing and the screening screen of this utility model;

[0026] Figure 6 This utility model Figure 3 A magnified view of a portion of region A in the middle.

[0027] Reference numerals: 1. Box body; 2. Inlet; 3. Outlet; 4. Toothed roller; 5. Dust cover; 6. Ventilation hole; 7. Drive gear; 8. Driven gear; 9. Motor; 10. Support frame; 11. Screening port; 12. Recycling box; 13. Screening mesh; 14. Vibrator; 15. End plate; 16. Support plate; 17. Fixing sleeve; 18. Fixing rod; 19. Spring; 20. First box door; 21. Filter screen; 22. Exhaust fan; 23. Water tank; 26. Exhaust port; 27. Second box door; 28. Inclined plate; 29. ​​Third box door. Detailed Implementation

[0028] 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.

[0029] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] Reference Figure 1-3 This utility model provides a coal mining crushing device, including a housing 1. The upper end of the housing 1 has an inlet 2 for receiving coal material to be crushed. A discharge outlet 3 is provided on the side wall near the lower end of the housing 1 to facilitate the discharge of crushed material. Inside the housing 1, there are two toothed rollers 4 that rotate horizontally relative to each other. These two toothed rollers 4 are key components for crushing coal material. The crushing teeth of the other two toothed rollers 4 are staggered. A power transmission assembly is installed on the side wall of the housing 1, which drives the toothed rollers 4 to rotate. To prevent dust contamination of the power transmission assembly during operation, a dust cover 5 with a specific filtration function is installed around the power transmission assembly. The side wall of the dust cover 5 is... There are several ventilation holes 6 to ensure the heat dissipation requirements of the power transmission components during operation, and the dust cover 5 is connected to the side wall of the housing 1; and a dust filter component connected to the side wall of the housing 1 is used to filter the dust inside the housing 1; a filter screen 21 is detachably connected inside the dust cover 5, and the operator can simply embed the filter screen 21 into the dust cover 5. The filter screen 21 and the ventilation holes 6 are set opposite to each other, which can effectively block dust from entering the interior of the dust cover 5 through the ventilation holes 6, thereby protecting the power transmission components. The dust cover 5 and the discharge port 3 are staggered, which can reduce the dust generated when the crushed material is discharged from the ventilation holes 6. The dust cover 5 and the side wall of the housing 1 are detachably connected by bolts.

[0031] Reference Figure 4 The power transmission assembly includes a drive gear 7, a driven gear 8, and a motor 9. The rotating shaft of one toothed roller 4 protrudes from the housing 1 and is fixedly connected to the drive gear 7. The rotating shaft of the other toothed roller 4 protrudes from the housing 1 and is fixedly connected to the driven gear 8. The drive gear 7 and the driven gear 8 are meshed with each other. A support frame 10 is installed on the side wall of the housing 1. The support frame 10 is fixedly connected to the motor 9. The output shaft of the motor 9 is fixedly connected to the side wall of the drive gear 7. When the motor 9 starts, its output shaft drives the drive gear 7 to rotate. Due to the meshing relationship between the drive gear 7 and the driven gear 8, the driven gear 8 rotates accordingly, which in turn drives the toothed roller 4 connected to it to rotate. The relative rotation of the two toothed rollers 4 realizes the crushing operation of the coal and mineral materials entering the housing 1.

[0032] Reference Figure 3 , Figure 5 The box 1 is equipped with a screening component for screening the crushed material. The screening component is located between the discharge port 3 and the toothed roller 4. The side wall of the box 1 is provided with a screening port 11. The screening port 11 and the material guide end of the screening component are arranged opposite to each other. The side wall of the box 1 is connected to a recycling box 12. The recycling box 12 is connected to the screening port 11. The dust removal filter is arranged at the upper end of the recycling box 12.

[0033] Reference Figure 5-6The screening component includes a screen 13 and a vibrator 14. The screen 13 is inclinedly arranged inside the housing 1. The vibrator 14 is provided at the lower end of the frame of the screen 13. When the vibrator 14 is working, it can make the screen 13 vibrate, which accelerates the screening process of the material on the screen 13. One end of the screen 13 is hinged to the side wall of the housing 1, and the screening port 11 is set opposite to one end of the screen 13. The material larger than the screen 13 is discharged through the screening port 11 and then falls into the recycling box 12. Two end plates 15 are fixedly connected to the lower part of the other end of the screen 13. Two support plates 16 are fixedly connected to the inner side wall of the housing 1. The end plates 15 and the support plates 16 are set one-to-one. A buffer assembly is hinged between the end plates 15 and the support plates 16.

[0034] The buffer assembly includes a fixed sleeve 17, a fixed rod 18, and a spring 19. The fixed sleeve 17 is equipped with a spring 19. The two ends of the spring 19 are fixedly connected to the bottom of the fixed sleeve 17 and one end of the fixed rod 18, respectively. One end of the fixed sleeve 17 is slidably sleeved on the periphery of one end of the fixed rod 18. The other end of the fixed rod 18 is hinged to the end plate 15, and the other end of the fixed sleeve 17 is hinged to the support plate 16. When the screen 13 is vibrating or displaced due to material impact, the buffer device can play a buffering role and ensure the stability of the screening process.

[0035] The dust removal and filtration assembly includes an exhaust fan 22 and a water tank 23. The exhaust fan 22 and the water tank 23 are both located at the top of the recycling bin 12. The exhaust pipe of the exhaust fan 22 is connected to the side wall of the bin 1 and is located below the toothed roller 4 to extract the dust-laden air generated inside the bin 1. The air supply pipe of the exhaust fan 22 (not shown in the figure) is connected to the water tank 23 and extends to the bottom of the water tank 23. An exhaust port 26 is provided at the top of the water tank 23.

[0036] Reference Figure 1-2 The recycling bin 12 is equipped with a first bin door 20 with a locking function, which makes it easy to clean the large particles collected in the recycling bin 12. The staff put these large particles back into the feed inlet 2 and crush them a second time with the help of the toothed roller 4.

[0037] The upper end of the discharge port 3 is hinged with a second box door 27 with a handle. The bottom of the box body 1 is provided with an inclined plate 28, with the lower end of the inclined plate 28 facing the discharge port 3. The crushed material smoothly gathers towards the discharge port 3 under the action of gravity, and then squeezes open the second box door 27 to be discharged. The box body 1 is provided with a third box door 29 with a locking function. The setting of the third box door 29 facilitates the staff to carry out comprehensive inspection and maintenance of the inside of the box body 1.

[0038] The working principle of this utility model is as follows: When in use, the operator turns on the motor 9, and its output shaft drives the drive gear 7 to rotate. Through meshing with the driven gear 8, the two toothed rollers 4 rotate relative to each other. The coal and mineral materials fall from the feed inlet 2 into the box 1 and enter between the two toothed rollers 4. The toothed rollers 4 apply squeezing and shearing forces to the materials, breaking large pieces of materials into small particles.

[0039] The crushed material falls onto the inclined screen 13. The vibrator 14 causes the screen 13 to vibrate, accelerating the screening of the material. The material that meets the requirements passes through the screen 13 and moves towards the discharge port 3 along the inclined plate 28 at the bottom of the box 1 under the action of gravity, pushing open the second box door 27 to discharge. The material larger than the aperture of the screen 13 rolls along the screen 13 towards the screening port 11 and finally falls into the recycling box 12.

[0040] During this period, the exhaust fan 22 is started simultaneously. The exhaust fan 22 draws out the dust-laden air in the box 1 through the exhaust pipe. The dust-laden air is sent to the bottom of the water tank 23 through the air supply pipe. The air rises in the form of bubbles, and the dust is adsorbed and settled by the water. The purified air is discharged from the exhaust port 26 at the top of the water tank 23.

[0041] When a certain amount of large particles accumulate in the recycling bin 12, the staff can open the first bin door 20 and put the material back into the feed inlet 2 for secondary crushing.

[0042] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0043] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A coal mining crushing device, characterized in that, include: The box (1) has a feed inlet (2) at its upper end and a discharge outlet (3) on its side wall near the lower end. Inside the box, at least one toothed roller (4) rotates relative to each other in the horizontal direction. A power transmission assembly is arranged on the side wall of the housing (1) and is used to drive the toothed roller (4) to rotate. The dust cover (5) with specific filtration function is arranged around the power transmission assembly, and its side wall is provided with several ventilation holes (6), and it is connected to the side wall of the housing (1); and A dust filter assembly, which is connected to the side wall of the housing (1), is used to filter the dust inside the housing (1); The dust cover (5) is detachably connected to a filter screen (21), the filter screen (21) and the vent (6) are arranged opposite to each other, the dust cover (5) and the discharge port (3) are misaligned, and the dust cover (5) and the side wall of the box (1) are detachably connected.

2. The coal mining crushing device according to claim 1, characterized in that, The housing (1) contains two toothed rollers (4) that rotate relative to each other in the horizontal direction. The power transmission assembly includes a drive gear (7), a driven gear (8), and a motor (9). The rotation shaft of one of the toothed rollers (4) protrudes from the housing (1) and is fixedly connected to the drive gear (7). The rotation shaft of the other toothed roller (4) protrudes from the housing (1) and is fixedly connected to the driven gear (8). The drive gear (7) and the driven gear (8) are meshed with each other. A support frame (10) is provided on the side wall of the housing (1). The support frame (10) is fixedly connected to the motor (9). The output shaft of the motor (9) is fixedly connected to the side wall of the drive gear (7).

3. The coal mining crushing device according to claim 1, characterized in that, The box (1) is equipped with a screening component, which is located between the discharge port (3) and the toothed roller (4). The side wall of the box (1) is equipped with a screening port (11), which is opposite to the material guide end of the screening component. The side wall of the box (1) is connected to a recycling box (12), which is connected to the screening port (11). The dust removal filter is arranged at the upper end of the recycling box (12).

4. The coal mining crushing device according to claim 3, characterized in that, The screening assembly includes a screening mesh (13) and a vibrator (14). The screening mesh (13) is inclinedly arranged inside the housing (1). The vibrator (14) is provided at the lower end of the frame of the screening mesh (13). One end of the screening mesh (13) is hinged to the side wall of the housing (1), and the screening port (11) and one end of the screening mesh (13) are arranged opposite to each other. At least one end plate (15) is fixedly connected to the lower part of the other end of the screening mesh (13). At least one support plate (16) is fixedly connected to the inner side wall of the housing (1). The end plate (15) and the support plate (16) are arranged in a one-to-one correspondence. A buffer assembly is hinged between the end plate (15) and the support plate (16).

5. The coal mining crushing device according to claim 4, characterized in that, The buffer assembly includes a fixed sleeve (17), a fixed rod (18), and a spring (19). The fixed sleeve (17) is provided with the spring (19). The two ends of the spring (19) are fixedly connected to the bottom of the fixed sleeve (17) and one end of the fixed rod (18), respectively. One end of the fixed sleeve (17) is slidably sleeved on the periphery of one end of the fixed rod (18). The other end of the fixed rod (18) is hinged to the end plate (15), and the other end of the fixed sleeve (17) is hinged to the support plate (16).

6. The coal mining crushing device according to claim 3, characterized in that, The dust removal and filtration assembly includes a blower (22) and a water tank (23). The blower (22) and the water tank (23) are both located at the upper end of the recycling box (12). The blower (22) has a blower pipe connected to the side wall of the box body (1) and the blower pipe is located below the toothed roller (4). The blower (22) has a blower pipe connected to the water tank (23) and extends to the bottom of the water tank (23). The water tank (23) has an exhaust port (26) at the upper end.

7. The coal mining crushing device according to claim 3, characterized in that, The recycling bin (12) is equipped with a first door (20) with a locking function.

8. The coal mining crushing apparatus according to any one of claims 1 to 7, characterized in that, The upper end of the discharge port (3) is hinged with a second box door (27) with a handle. The bottom of the box body (1) is provided with a sloping plate (28), the lower end of the sloping plate (28) facing the discharge port (3). The box body (1) is provided with a third box door (29) with a locking function.

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