Coal-based solid waste recycling and crushing device and method in arid region

Abstract

The application discloses a kind of arid region coal-based solid waste recycling crushing device and method, belong to coal-based solid waste processing field.A kind of arid region coal-based solid waste recycling crushing device, including crushing box and with the screening box being communicated with crushing box, further include: the crushing assembly for being set in crushing box, for carrying out crushing to coal-based solid waste, wherein, the inner wall of crushing box is provided with protection assembly, and part of structure vibration in protection assembly can be driven when coal-based solid waste is crushed;Primary screening mechanism is arranged on the inner wall of crushing box, secondary screening mechanism is arranged on the inner wall of screening box, and secondary screening mechanism is communicated with primary screening mechanism by pipeline;The application can overcome the problem that coal-based solid waste crushing operation process is complicated, crushing efficiency is low, and screening equipment is easily blocked.

Description

Technical Field

[0001] This invention relates to the field of coal-based solid waste treatment technology, and in particular to a crushing device and method for the reuse of coal-based solid waste in arid areas. Background Technology

[0002] In arid regions, the treatment of coal-based solid waste presents both unique challenges and opportunities. This mainly includes coal gangue, fly ash, and gasification ash. Coal-based solid waste has potential resource utilization value in arid regions. For example, coal gangue can be used for power generation and building material production, while fly ash can be used for soil improvement and building materials. To facilitate subsequent reuse, coal-based solid waste usually needs to be crushed and then screened for further processing.

[0003] Currently, when coal-based solid waste is crushed, it usually needs to be crushed and screened multiple times to ensure that the crushed coal-based solid waste meets the required size. The operation process is not only cumbersome, but also reduces the crushing efficiency of coal-based solid waste. Screening equipment is also prone to clogging, which affects the screening efficiency of coal-based solid waste. Summary of the Invention

[0004] The purpose of this invention is to solve the problems of cumbersome operation process, low crushing efficiency and easy clogging of screening equipment in the existing technology of coal-based solid waste crushing, and to propose a crushing device and method for the reuse of coal-based solid waste in arid areas.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A crushing device for recycling coal-based solid waste in arid areas includes a crushing box and a screening box connected to the crushing box. It further includes: a crushing assembly disposed within the crushing box for crushing the coal-based solid waste; a protective assembly disposed on the inner wall of the crushing box, capable of driving a portion of the protective assembly to vibrate during coal-based solid waste crushing; a primary screening mechanism disposed on the inner wall of the crushing box; and a secondary screening mechanism disposed on the inner wall of the screening box. The secondary screening mechanism is connected to the primary screening mechanism via a pipe. During coal-based solid waste screening, the primary and secondary screening mechanisms are driven to vibrate. The secondary screening mechanism can adjust the angle of the primary screening mechanism via the pipe. When the primary screening mechanism rotates to a predetermined angle, it is driven to rotate back to its initial position via the pipe, simultaneously reducing the resistance of the secondary screening mechanism during vibration.

[0007] To facilitate the crushing of coal-based solid waste, preferably, the crushing assembly includes two sets of crushing rollers rotatably connected inside the crushing box. A drive motor is fixedly connected to the outer wall of the crushing box and connected to the shaft end of one set of crushing rollers. The shaft end of the crushing rollers away from the drive motor extends to the outside of the crushing box and is fixedly connected to a meshing linkage gear.

[0008] To prevent damage to the equipment during the crushing of coal-based solid waste, the protective assembly further includes fixed liners symmetrically and fixedly connected inside the crushing chamber. A movable liner is symmetrically and rotatably connected to the side of the crushing chamber near the crushing roller. Multiple sets of compression components are fixedly connected to the inner wall of the crushing chamber near the movable liner. A first spring is fixedly connected between the compression component and the inner wall of the crushing chamber. The fixed liner is located above the movable liner and is in contact with the crushing roller. The movable liner is arc-shaped and is in contact with the compression component.

[0009] To further improve the quality and efficiency of coal-based solid waste screening, the primary screening mechanism includes a first screening plate symmetrically and rotatably connected inside the crushing box. An installation cavity is provided at one end of the first screening plate that is close to each other. An adaptation plate is slidably connected inside the installation cavity. A connecting cylinder is fixedly connected between the adaptation plate and the installation cavity. The two ends of the adaptation plates that are close to each other are rotatably connected, and a sealing strip is provided at one end of the adaptation plates that is close to each other.

[0010] To facilitate the re-throwing of larger coal-based solid waste to the crushing area, a fixed annular component is further included, which is fixedly connected to the side of the crushing box near the first screening plate. A movable annular component is fixedly connected to the first screening plate and slidably connected to the fixed annular component. Multiple sets of second springs are fixedly connected between the movable annular component and the fixed annular component. A pneumatic delay valve is provided on the fixed annular component. The axes of the fixed annular component and the movable annular component are on the same straight line as the axis of the first screening plate. The connecting cylinder and the pneumatic delay valve are connected by a pipeline.

[0011] To avoid clogging during coal-based solid waste screening and improve screening efficiency, the secondary screening mechanism further includes a fixed frame fixedly connected inside the screening box. Multiple sets of sealing cylinders are fixedly connected to the fixed frame. A support rod is slidably connected inside each sealing cylinder. A third spring is fixedly connected between the support rod and the sealing cylinder. A second screening plate is provided at the end of the support rod away from the sealing cylinder. A pin matching the screen holes of the second screening plate is fixedly connected to the fixed frame. The second screening plate is concave in the middle and fits against the inner wall of the screening box. The air inlet of the sealing cylinder is connected to the exhaust end of the compressor via a pipe, and the exhaust end of the sealing cylinder is connected to the fixed annular component via a pipe.

[0012] To ensure the stability of coal-based solid waste screening, the system further includes an extension fixedly connected to the outer wall of the sealing cylinder. A sliding groove is provided between the extension and the sealing cylinder, and a retaining ring is slidably connected inside the sliding groove. The sliding groove is connected to the connecting cylinder through a pipe.

[0013] To reduce dust generated during the crushing and screening of coal-based solid waste, the crushing box is further provided with a feeding component at the top, a discharge channel at the bottom of the screening box, a dust suppression channel on the side of the screening box near the discharge channel, a dustproof plate on the side of the dust suppression channel near the screening box, an exhaust fan rotatably connected inside the dust suppression channel, a drive wheel fixedly connected to the shaft end of one set of crushing rollers, a driven wheel matching the drive wheel fixedly connected to the shaft end of the exhaust fan, a belt sleeved between the drive wheel and the driven wheel, and a cleaning component on the side of the screening box near the dust suppression channel.

[0014] To facilitate dust recycling and reuse, the cleaning assembly further includes a rotating ring rotatably connected to the side of the screening box near the dust collection channel. A connecting ring is fixedly connected to the rotating ring, and multiple drive plates are fixedly connected to the connecting ring. A cleaning plate is fixedly connected to the side of the connecting ring near the dustproof plate. The inner wall of the screening box has a groove adapted to the rotating ring, and the cleaning plate is in contact with the dustproof plate. A guide plate is inclinedly arranged above the inner wall of the screening box near the dustproof plate.

[0015] A method for pulverizing coal-based solid waste for reuse in arid regions includes the following steps:

[0016] Step 1: The coal-based solid waste is crushed. During the crushing process, the coal-based solid waste falls naturally under the action of gravity.

[0017] Step 2: Perform secondary vibratory screening on the crushed coal-based solid waste, and improve the vibration effect based on the impact between the coal-based solid waste and the inner wall of the equipment during crushing;

[0018] Step 3: During the screening process, larger coal-based solid waste is intermittently thrown to the crushing area for secondary crushing;

[0019] Step 4: Based on the vibration of the primary and secondary screening, crush the coal-based solid waste with smaller size, and clean the secondary screening equipment at the same time.

[0020] Step 5: During the screening process, dust generated during crushing and screening is reduced and collected.

[0021] Compared with the prior art, the present invention provides a crushing device and method for recycling coal-based solid waste in arid areas, which has the following beneficial effects:

[0022] 1. The coal-based solid waste recycling crushing device in this arid area crushes the coal-based solid waste through the crushing components. Some of the coal-based solid waste is thrown onto the protective components under the action of the crushing components. Combined with the gravity of the coal-based solid waste itself, the vibration effect of the primary screening mechanism and the secondary screening mechanism can be improved, thereby improving the screening efficiency of the coal-based solid waste. When the primary screening mechanism and the secondary screening mechanism vibrate, the coal-based solid waste on the secondary screening mechanism is impacted and crushed.

[0023] 2. The coal-based solid waste recycling and crushing device in this arid region stores energy in the primary screening mechanism through the vibration of the secondary screening mechanism. When the primary screening mechanism rotates to the threshold angle, the energy is released, throwing the coal-based solid waste on the primary screening mechanism back to the crushing area for secondary crushing until the size of the coal-based solid waste meets the screening requirements of the primary screening mechanism. At the same time, it reduces the resistance encountered by the secondary screening mechanism during vibration, thereby increasing the vibration amplitude of the secondary screening mechanism. This facilitates the top-mounted cleaning of the secondary screening mechanism, prevents blockage, and further improves the screening efficiency of coal-based solid waste.

[0024] 3. The coal-based solid waste recycling crushing device in this arid area uses the impact between the primary and secondary screening mechanisms, as well as the primary screening mechanism to throw larger coal-based solid waste back to the crushing area. This eliminates the need for repeated crushing and screening of coal-based solid waste, greatly simplifying the crushing process and improving the crushing efficiency. It also reduces dust and waste generated during repeated crushing and screening.

[0025] The parts of this device not covered herein are the same as or can be implemented using existing technologies. This invention can overcome the problems of cumbersome operation process, low crushing efficiency, and easy clogging of screening equipment in coal-based solid waste crushing. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of a coal-based solid waste recycling and crushing device for arid regions proposed in this invention. Figure 1 ;

[0027] Figure 2 This is a schematic diagram of the structure of a coal-based solid waste recycling and crushing device for arid regions proposed in this invention. Figure 2 ;

[0028] Figure 3 This is a schematic cross-sectional view of the crushing box and screening box in a crushing device for recycling coal-based solid waste in arid areas, as proposed in this invention.

[0029] Figure 4 This is a schematic diagram of the primary screening mechanism in a coal-based solid waste recycling and crushing device for arid areas proposed in this invention.

[0030] Figure 5 This is a schematic diagram of the secondary screening mechanism in a coal-based solid waste recycling and crushing device for arid areas proposed in this invention.

[0031] Figure 6 This is a schematic diagram of the cleaning component in a coal-based solid waste recycling and crushing device for arid regions proposed in this invention.

[0032] Figure 7 This invention proposes a coal-based solid waste recycling and crushing device for arid regions. Figure 3 A schematic diagram of the structure of part A;

[0033] Figure 8 This invention proposes a coal-based solid waste recycling and crushing device for arid regions. Figure 3 A structural diagram of section B;

[0034] Figure 9 This invention proposes a coal-based solid waste recycling and crushing device for arid regions. Figure 3 A structural diagram of part C.

[0035] In the diagram: 1. Crushing box; 2. Feeding component; 3. Crushing roller; 4. Drive motor; 5. Linkage gear; 6. Screening box; 7. Discharge channel; 8. Fixed liner; 9. Movable liner; 10. Compressor; 11. First spring; 12. First screening plate; 13. Mounting cavity; 14. Adaptive plate; 15. Connecting cylinder; 16. Sealing strip; 17. Fixed annular component; 18. Movable annular component; 19. Second spring; 20. Pneumatic extension 21. Time valve; 22. Fixing bracket; 23. Ejector pin; 24. Sealing cylinder; 25. Support rod; 26. Third spring; 27. Extension piece; 28. Slide groove; 29. ​​Retaining ring; 30. Second screening plate; 31. Exhaust fan; 32. Drive wheel; 33. Driven wheel; 34. Belt; 35. Dustproof plate; 36. Cleaning assembly; 37. Connecting ring; 38. Rotating ring; 39. Drive plate; 30. Cleaning plate; 31. Guide plate. Detailed Implementation

[0036] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0037] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "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 invention and simplifying the description, 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 invention.

[0038] Example 1:

[0039] Reference Figures 1-9 A coal-based solid waste recycling and crushing device for arid regions includes a crushing box 1 and a screening box 6 connected to the crushing box 1. The bottom of the screening box 6 is inclined to facilitate the rapid discharge of coal-based solid waste. The device also includes: a crushing assembly installed inside the crushing box 1 for crushing the coal-based solid waste; a protective assembly installed on the inner wall of the crushing box 1, which can drive a portion of the protective assembly to vibrate during the crushing of the coal-based solid waste; a primary screening mechanism installed on the inner wall of the crushing box 1; and a secondary screening mechanism installed on the inner wall of the screening box 6. The secondary screening mechanism is connected to the primary screening mechanism via a pipe. During the screening of the coal-based solid waste, the primary and secondary screening mechanisms can be driven to vibrate. The secondary screening mechanism can adjust the angle of the primary screening mechanism via the pipe. When the primary screening mechanism rotates to a predetermined angle, it is driven to rotate back to its initial position via the pipe, while simultaneously reducing the resistance of the secondary screening mechanism during vibration.

[0040] Reference Figures 1-3 The crushing assembly includes two sets of crushing rollers 3 rotatably connected inside the crushing box 1. A drive motor 4 is fixedly connected to the outer wall of the crushing box 1 and connected to the shaft end of one set of crushing rollers 3. The shaft end of the crushing roller 3 away from the drive motor 4 extends to the outside of the crushing box 1 and is fixedly connected to a meshing linkage gear 5.

[0041] The crushing roller 3 is a conventional method in the prior art, so it will not be described in detail. The two sets of crushing rollers 3 can rotate relative to each other through the meshing linkage gear 5, so that when coal-based solid waste is added, the coal-based solid waste can be crushed by the two sets of crushing rollers 3 at the same time to achieve a better crushing effect.

[0042] Reference Figure 3 and Figure 7 The protective components include fixed liner plates 8 that are symmetrically fixedly connected inside the crushing box 1, and movable liner plates 9 that are symmetrically rotatably connected to the side of the crushing box 1 near the crushing roller 3. Multiple sets of compression members 10 are fixedly connected to the inner wall of the crushing box 1 near the movable liner plates 9. A first spring 11 is fixedly connected between the compression members 10 and the inner wall of the crushing box 1. The fixed liner plates 8 are located above the movable liner plates 9 and are in contact with the crushing roller 3. The movable liner plates 9 are arranged in an arc shape and the compression members 10 are in contact with the movable liner plates 9.

[0043] The fixed liner 8 can limit the added coal-based solid waste, so that the coal-based solid waste falls after being crushed between the two sets of crushing rollers 3. Since the crushing rollers 3 are in a high-speed rotating state, some coal-based solid waste will be thrown outward along the bottom of the crushing rollers 3 during the crushing process. At this time, the movable liner 9 can buffer the impact of the coal-based solid waste and avoid damage to the crushing box 1. In this process, the movable liner 9 will vibrate under the action of the first spring 11 and the compression component 10.

[0044] Reference Figure 3 , Figure 4 and Figure 8 The primary screening mechanism includes a first screening plate 12 symmetrically rotatably connected in the crushing box 1. An installation cavity 13 is provided at one end of the first screening plate 12 that is close to each other. An adaptation plate 14 is slidably connected inside the installation cavity 13. A connecting cylinder 15 is fixedly connected between the adaptation plate 14 and the installation cavity 13. The two ends of the adaptation plates 14 that are close to each other are rotatably connected, and a sealing strip 16 is provided at one end of the adaptation plates 14 that is close to each other.

[0045] Both the first screening plate 12 and the adapting plate 14 have holes for intercepting larger coal-based solid waste. As the angle between the first screening plates 12 changes, the intercepted coal-based solid waste will move closer to the adapting plate 14. This can prevent it from affecting the screening of subsequent coal-based solid waste and provide a larger buffer space for the subsequent coal-based solid waste to be thrown upwards. In addition, it should be explained that even if the intercepted coal-based solid waste cannot be completely thrown to the crushing roller 3 during the continuous crushing process, the falling coal-based solid waste can collide with the intercepted coal-based solid waste, and it can be crushed again until its size is large enough to pass through the first screening plate 12. During this process, the sealing strip 16 can prevent the coal-based solid waste from getting stuck between the adapting plates 14 on both sides, thereby ensuring the stability of the rotation of the adapting plate 14.

[0046] Reference Figure 3 , Figure 4 and Figure 7 It also includes a fixed annular component 17 fixedly connected to one side of the crushing box 1 near the first screening plate 12. A movable annular component 18 is fixedly connected to the first screening plate 12 and slidably connected to the fixed annular component 17. Multiple sets of second springs 19 are fixedly connected between the movable annular component 18 and the fixed annular component 17. A pneumatic delay valve 20 is provided on the fixed annular component 17. The axes of the fixed annular component 17 and the movable annular component 18 are on the same straight line as the axis of the first screening plate 12. The connecting cylinder 15 and the pneumatic delay valve 20 are connected by a pipe.

[0047] The specific structure of the pneumatic delay valve 20 can be referred to in the existing technical solutions. Those skilled in the art will understand that when the pneumatic delay valve 20 is sucked in and reaches the threshold pressure, the pneumatic delay valve 20 is in the open state. After the sucking stops, the pneumatic delay valve 20 closes after a delay. When the sealing cylinder 23 and support rod 24 vibrate, they intermittently deliver compressed gas between the fixed annular member 17 and the movable annular member 18. As the air pressure continuously increases, it drives the movable annular member 18 to move within the fixed annular member 17... The outward extension adjusts the angle of the two sets of first screening plates 12. It should be explained that, due to the compressibility of gas, the angle of the first screening plate 12 is still in a state of vibration during the change. After the pneumatic delay valve 20 is in the open state, under the action of the second spring 19, the movable annular part 18 is driven to retract into the fixed annular part 17, and at the same time, the first screening plate 12 is driven to rotate upward, thereby throwing the intercepted coal-based solid waste to the crushing roller 3 for secondary crushing until the coal-based solid waste is sufficient to pass through the first screening plate 12.

[0048] Reference Figure 3 , Figure 5 and Figure 9 The secondary screening mechanism includes a fixed frame 21 fixedly connected inside the screening box 6. Multiple sets of sealing cylinders 23 are fixedly connected to the fixed frame 21. A support rod 24 is slidably connected inside the sealing cylinder 23. A third spring 25 is fixedly connected between the support rod 24 and the sealing cylinder 23. A second screening plate 29 is provided at the end of the support rod 24 away from the sealing cylinder 23. A pin 22 matching the screen hole of the second screening plate 29 is fixedly connected to the fixed frame 21. The second screening plate 29 is concave in the middle and fits against the inner wall of the screening box 6. The air inlet end of the sealing cylinder 23 is connected to the exhaust end of the compressor 10 through a pipe. The exhaust end of the sealing cylinder 23 is connected to the fixed annular part 17 through a pipe. It also includes an extension 26 fixedly connected to the outer wall of the sealing cylinder 23. A sliding groove 27 is opened between the extension 26 and the sealing cylinder 23. A retaining ring 28 is slidably connected inside the sliding groove 27. The sliding groove 27 is connected to the connecting cylinder 15 through a pipe.

[0049] Through the falling of coal-based solid waste and its impact with the movable liner 9, the compressed gas from the compressor 10 enters the sealing cylinder 23. As the support rod 24 moves into the sealing cylinder 23, it delivers the compressed gas to the fixed annular component 17. The second screening plate 29, under gravity, rests on the support rod 24, causing it to vibrate. Simultaneously, coal-based solid waste larger than the surface holes of the second screening plate 29 moves to the center of the second screening plate 29. Initially, the distance between the first screening plate 12 and the second screening plate 29 is relatively large under the action of the second spring 19. As the center position of the first screening plate 12 continuously moves downward, the distance between the first screening plate 12 and the second screening plate 29 continuously decreases. When the first screening plate 12 rotates to the threshold angle, the connecting cylinder 15... This causes the retaining ring 28 to retract into the chute 27. At the same time, the resistance encountered by the support rod 24 as it vibrates downward with the second screening plate 29 decreases, increasing the vibration amplitude of the second screening plate 29. On the one hand, this allows the ejector pin 22 to penetrate the second screening plate 29, thereby cleaning the holes on the surface of the second screening plate 29 and preventing blockage. On the other hand, it allows the second screening plate 29 to be extremely close to the first screening plate 12, so that the coal-based solid waste remaining on the second screening plate 29 can be impacted and crushed by the adaptation plate 14 on the first screening plate 12. Since the coal-based solid waste remaining on the second screening plate 29 is relatively small, the crushing efficiency is high. This not only improves the crushing efficiency of coal-based solid waste, but also avoids repeated crushing and screening of coal-based solid waste, making the operation simpler and reducing dust generation.

[0050] Reference Figure 1 and Figure 3 The top of the crushing box 1 is provided with a feeding component 2, the bottom of the screening box 6 is provided with a discharge channel 7, a dust suppression channel is provided on the side of the screening box 6 near the discharge channel 7, a dustproof plate 34 is provided on the side of the dust suppression channel near the screening box 6, an exhaust fan 30 is rotatably connected inside the dust suppression channel, a drive wheel 31 is fixedly connected to the shaft end of one set of crushing rollers 3, a driven wheel 32 matching the drive wheel 31 is fixedly connected to the shaft end of the exhaust fan 30, a belt 33 is sleeved between the drive wheel 31 and the driven wheel 32, and a cleaning component 35 is provided on the side of the screening box 6 near the dust suppression channel.

[0051] The feeding component 2 and the discharge channel 7 are conventional methods in the prior art, so they will not be described in detail. When crushing coal-based solid waste, the exhaust fan 30 is rotated by the drive wheel 31, the driven wheel 32 and the belt 33. The surface of the exhaust fan 30 is spiral, which creates a negative pressure on the side near the screening box 6 when it rotates, thereby adsorbing the dust generated during the crushing and screening of coal-based solid waste, thereby reducing the dust generated by the equipment during operation, reducing pollution to the surrounding environment and harm to the health of the workers.

[0052] Reference Figure 3 and Figure 6 The cleaning component 35 includes a rotating ring 352 rotatably connected to the side of the screening box 6 near the dust collection channel. A connecting ring 351 is fixedly connected to the rotating ring 352. Multiple drive plates 353 are fixedly connected to the connecting ring 351. A cleaning plate 354 is fixedly connected to the side of the connecting ring 351 near the dustproof plate 34. The inner wall of the screening box 6 has a groove that matches the rotating ring 352. The cleaning plate 354 fits against the dustproof plate 34. A guide plate 36 is inclinedly arranged above the inner wall of the screening box 6 near the dustproof plate 34.

[0053] When adsorbing dust, some dust will be adsorbed onto the dustproof plate 34. As coal-based solid waste falls off, under the action of the guide plate 36, some coal-based solid waste slides down along one side of the connecting ring 351, striking the drive plate 353 on the other side. This causes the connecting ring 351 to rotate in the direction in which the coal-based solid waste slides, and drives the cleaning plate 354 to rotate along the surface of the dustproof plate 34, cleaning the dust adsorbed on the dustproof plate 34. This not only reduces the harm of dust to the exhaust equipment during dust suppression, but also eliminates the need for dust collection (since coal-based solid waste generally needs to be ground after crushing, there is no need to separate the dust from the crushed coal-based solid waste), further simplifying the operation of the equipment.

[0054] Example 2:

[0055] A method for pulverizing coal-based solid waste for reuse in arid regions includes the following steps:

[0056] Step 1: The coal-based solid waste is crushed. During the crushing process, the coal-based solid waste falls naturally under the action of gravity.

[0057] Step 2: Perform secondary vibratory screening on the crushed coal-based solid waste, and improve the vibration effect based on the impact between the coal-based solid waste and the inner wall of the equipment during crushing;

[0058] Step 3: During the screening process, larger coal-based solid waste is intermittently thrown to the crushing area for secondary crushing;

[0059] Step 4: Based on the vibration of the primary and secondary screening, crush the coal-based solid waste with smaller size, and clean the secondary screening equipment at the same time.

[0060] Step 5: During the screening process, dust generated during crushing and screening is reduced and collected.

[0061] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A crushing device for the reuse of coal-based solid waste in arid areas, comprising a crushing box (1) and a screening box (6) connected to the crushing box (1), characterized in that, Also includes: The crushing assembly installed inside the crushing box (1) is used to crush coal-based solid waste. The inner wall of the crushing box (1) is provided with a protective component, which can drive the vibration of part of the structure in the protective component when crushing coal-based solid waste. A primary screening mechanism is installed on the inner wall of the crushing box (1), and a secondary screening mechanism is installed on the inner wall of the screening box (6). The secondary screening mechanism and the primary screening mechanism are connected by a pipe. In particular, when screening coal-based solid waste, it can drive the primary screening mechanism and the secondary screening mechanism to vibrate. The secondary screening mechanism can adjust the angle of the primary screening mechanism through a pipeline. When the primary screening mechanism rotates to a predetermined angle, it can drive the primary screening mechanism to rotate back to the initial position through a pipeline, thereby reducing the resistance when the secondary screening mechanism vibrates. The crushing assembly includes two sets of crushing rollers (3) rotatably connected inside the crushing box (1). The crushing box (1) is symmetrically connected to a movable liner (9) on the side near the crushing roller (3). Multiple sets of compression components (10) are fixedly connected to the inner wall of the crushing box (1) on the side near the movable liner (9). A first spring (11) is fixedly connected between the compression component (10) and the inner wall of the crushing box (1). The primary screening mechanism includes a first screening plate (12) symmetrically rotated and connected in the crushing box (1). The first screening plate (12) has an installation cavity (13) at one end close to each other. An adaptation plate (14) is slidably connected inside the installation cavity (13). A connecting cylinder (15) is fixedly connected between the adaptation plate (14) and the installation cavity (13). The adapting plates (14) are rotatably connected at their close ends, and a sealing strip (16) is provided at the close ends of the adapting plates (14). It also includes a fixed annular component (17) fixedly connected to the side of the crushing box (1) near the first screening plate (12), a movable annular component (18) fixedly connected to the first screening plate (12) and slidably connected to the fixed annular component (17), a plurality of second springs (19) fixedly connected between the movable annular component (18) and the fixed annular component (17), and a pneumatic delay valve (20) connected to the fixed annular component (17). The fixed annular component (17) and the movable annular component (18) are aligned with the axis of the first screening plate (12), and the connecting cylinder (15) and the pneumatic delay valve (20) are connected by a pipe. The secondary screening mechanism includes a fixed frame (21) fixedly connected inside the screening box (6). Multiple sets of sealing cylinders (23) are fixedly connected to the fixed frame (21). A support rod (24) is slidably connected inside the sealing cylinder (23). A third spring (25) is fixedly connected between the support rod (24) and the sealing cylinder (23). A second screening plate (29) is provided at the end of the support rod (24) away from the sealing cylinder (23). The fixing frame (21) is fixedly connected with a pin (22) that matches the sieve hole of the second sieve plate (29). The second sieve plate (29) is concave in the middle and fits against the inner wall of the sieve box (6). The air inlet of the sealing cylinder (23) is connected to the exhaust end of the compressor (10) through a pipe. The exhaust end of the sealing cylinder (23) is connected to the fixed ring (17) through a pipe.

2. The coal-based solid waste recycling and crushing device for arid areas according to claim 1, characterized in that, A drive motor (4) is fixedly connected to the outer wall of the crushing box (1) and connected to the shaft end of one of the crushing rollers (3). The shaft end of the crushing roller (3) away from the drive motor (4) extends to the outside of the crushing box (1) and is fixedly connected to a meshing linkage gear (5).

3. The coal-based solid waste recycling and crushing device for arid areas according to claim 2, characterized in that, The protective assembly includes fixed lining plates (8) that are symmetrically fixedly connected inside the crushing chamber (1). The fixed liner (8) is located above the movable liner (9), the fixed liner (8) is in contact with the crushing roller (3), the movable liner (9) is arc-shaped, and the compression member (10) is in contact with the movable liner (9).

4. The coal-based solid waste recycling and crushing device for arid areas according to claim 1, characterized in that, It also includes an extension (26) fixedly connected to the outer wall of the sealing cylinder (23), a groove (27) is provided between the extension (26) and the sealing cylinder (23), a retaining ring (28) is slidably connected inside the groove (27), and the groove (27) is connected to the connecting cylinder (15) through a pipe.

5. A coal-based solid waste recycling and crushing device for arid areas according to claim 2, characterized in that, The top of the crushing box (1) is provided with a feeding component (2), the bottom of the screening box (6) is provided with a discharge channel (7), the side of the screening box (6) near the discharge channel (7) is provided with a dust suppression channel, the side of the dust suppression channel near the screening box (6) is provided with a dustproof plate (34), the interior of the dust suppression channel is rotatably connected with an exhaust fan (30), a set of crushing rollers (3) is fixedly connected with a drive wheel (31), the shaft end of the exhaust fan (30) is fixedly connected with a driven wheel (32) matching the drive wheel (31), a belt (33) is sleeved between the drive wheel (31) and the driven wheel (32), and a cleaning component (35) is provided on the side of the screening box (6) near the dust suppression channel.

6. The coal-based solid waste recycling and crushing device for arid areas according to claim 5, characterized in that, The cleaning component (35) includes a rotating ring (352) rotatably connected to the side of the screening box (6) near the dust collection channel. A connecting ring (351) is fixedly connected to the rotating ring (352). Multiple drive plates (353) are fixedly connected to the connecting ring (351). A cleaning plate (354) is fixedly connected to the side of the connecting ring (351) near the dustproof plate (34). The inner wall of the screening box (6) is provided with a groove that matches the rotating ring (352), the cleaning plate (354) is attached to the dustproof plate (34), and a guide plate (36) is inclinedly provided on the upper side of the inner wall of the screening box (6) near the dustproof plate (34).

7. A method for pulverizing coal-based solid waste for reuse in arid regions, comprising the pulverizing device for reuse of coal-based solid waste in arid regions as described in any one of claims 1-6, characterized in that, Includes the following steps: Step 1: The coal-based solid waste is crushed. During the crushing process, the coal-based solid waste falls naturally under the action of gravity. Step 2: Perform secondary vibratory screening on the crushed coal-based solid waste, and improve the vibration effect based on the impact between the coal-based solid waste and the inner wall of the equipment during crushing; Step 3: During the screening process, larger coal-based solid waste is intermittently thrown to the crushing area for secondary crushing; Step 4: Based on the vibration of the primary and secondary screening, crush the small-sized coal-based solid waste, and clean the secondary screening equipment at the same time; Step 5: During the screening process, dust generated by crushing and screening is reduced and collected.

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