Building waste dust falling and smashing device and using method thereof

Abstract

The invention provides a building waste dust falling and smashing device and a using method thereof, and belongs to the technical field of building waste recycling, and the technical scheme is that the building waste dust falling and smashing device comprises a smashing box, a first smashing tooth roller and a second smashing tooth roller are arranged in the smashing box, and adjusting mechanisms are arranged on the two sides of the smashing box; the two adjusting mechanisms can move the two ends of the second smashing tooth roller correspondingly. According to the using method of the building waste dust falling and smashing device, the second smashing tooth roller is controlled to move in the direction away from the first smashing tooth roller through the adjusting mechanism, and wound building waste is cleaned. The crushing device has the beneficial effects that according to the scheme, it can be guaranteed that gaps between the first crushing tooth rollers and the second crushing tooth rollers are kept consistent all the time, the problem that abrasion is aggravated due to uneven gaps can be effectively avoided, the stability of the crushing effect is guaranteed, and the phenomenon that the crushing effect is reduced is prevented; and the overall performance and reliability of the whole crushing device are remarkably improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of construction waste recycling, and in particular relates to a construction waste dust reduction and crushing device and a use method thereof. Background Art

[0002] Construction waste refers to the slag, abandoned soil, discarded materials, residual mud, and other waste generated by construction companies or individuals during the construction, laying, demolition, and repair of various buildings, structures, and pipeline networks. Its main components include bricks, sand and gravel, and subsoil. Crushing and recycling construction waste offers significant benefits. Firstly, after processing, it can be converted into recycled raw materials, such as recycled concrete, for use in various new construction projects, significantly reducing construction costs. Secondly, it effectively reduces the need for landfill and stockpiling of construction waste, significantly lowering waste disposal costs.

[0003] Currently, common construction waste shredders are equipped with a shredding box. For example, according to patent publication number CN220294779U, a fixed roller and a movable roller that moves horizontally along a movable groove are rotatably connected within the shredding box. The movable roller's ends are connected to a connecting beam via telescopic rods, each fitted with a spring. The connecting beam is threadedly connected to a lead screw, the end of which is fixed to the output shaft of a servo motor. During operation, the servo motor drives the lead screw to rotate, which in turn drives the connecting beam to move horizontally. The connecting beam, through the coordinated action of the telescopic rod and spring, drives the movable roller. This allows the gap between the movable and fixed rollers to be adjusted to meet diverse shredding needs. As the movable and fixed rollers work together to crush construction waste, the waste exerts pressure on the movable roller, causing the telescopic rod connected to the movable roller to retract and the spring to compress. After the crushing operation is completed, the spring releases its elastic potential energy, pushing the telescopic rod out, and driving the movable roller back to its original position. However, in actual application scenarios, construction waste has a wide variety of shapes and is extremely irregular, resulting in significant differences in the pressure exerted on the springs at both ends of the movable roller. Over time, the two springs undergo different plastic deformations due to the varying degrees of pressure they are subjected to. This difference causes the axis of the movable roller to no longer be parallel to the axis of the fixed roller, resulting in a certain angle. As a result, the gap between one end of the movable roller and the fixed roller is too small, causing excessive wear in this area; while the gap between the other end of the movable roller and the fixed roller is too large, seriously affecting the crushing effect and reducing the performance and reliability of the entire crushing device. Summary of the Invention

[0004] In response to the problem that after long-term use, the movable roller of the existing crushing device will deviate, causing increased wear of the crushing device and reduced crushing effect, the present invention provides a construction waste dust reduction and crushing device, in which the movable roller will not deviate, will not cause increased wear of the crushing device and reduced crushing effect, and a method for using the device.

[0005] On the one hand, in order to solve the above problems, the technical solution adopted by the present invention is a construction waste dust reduction and crushing device, including a crushing box, a first crushing tooth roller and a second crushing tooth roller are arranged inside the crushing box, the axis of the first crushing tooth roller is parallel to the axis of the second crushing tooth roller, the first crushing tooth roller is connected to the first driving mechanism, the first driving mechanism can drive the first crushing tooth roller to rotate, the second crushing tooth roller is connected to the second driving mechanism, the second driving mechanism can drive the second crushing tooth roller to rotate; adjustment mechanisms are provided on both sides of the crushing box, and the two adjustment mechanisms can move the two ends of the second crushing tooth roller respectively; the crushing box is also provided with a dust reduction mechanism, which can settle the dust.

[0006] In this technical solution, by starting the first drive mechanism and the second drive mechanism, the first crushing tooth roller and the second crushing tooth roller are controlled to rotate in opposite directions and squeeze each other, thereby crushing the construction waste. The dust reduction mechanism can spray water mist to settle the dust. When the soft construction waste is entangled between the first crushing tooth roller and the second crushing tooth roller and causes a blockage, or when the gap between the first crushing tooth roller and the second crushing tooth roller needs to be actively adjusted due to actual production needs, the two adjustment mechanisms can accurately control the movement of the two ends of the second crushing tooth roller respectively to ensure that the axis of the second crushing tooth roller always remains parallel to the axis of the first crushing tooth roller during the entire adjustment process. Therefore, this solution can ensure that the gap between the first crushing tooth roller and the second crushing tooth roller is always consistent, can effectively avoid the problem of increased wear due to uneven gaps, ensure the stability of the crushing effect, prevent the phenomenon of reduced crushing effect, and significantly improve the overall performance and reliability of the entire crushing device.

[0007] Furthermore, a first connecting shaft is fixed within the first pulverizing roller. One end of the first connecting shaft extends through the pulverizing housing and is secured to a second sprocket. The first drive mechanism includes a first motor secured to the pulverizing housing. A first sprocket is secured to the output shaft of the first motor. A first chain is looped between the first and second sprockets. The combination of the first sprocket, the first chain, and the second sprocket efficiently and stably transmits power from the first motor to the first pulverizing roller. The chain drive offers high transmission efficiency, ensuring that the first pulverizing roller rotates at the set speed and torque, thereby stably pulverizing construction waste and reducing energy loss and transmission errors during power transmission. Furthermore, the chain drive can withstand heavy loads. During the pulverizing process, the first pulverizing roller must overcome significant resistance to crush the material. The chain drive effectively transmits the high torque output by the first motor to the first pulverizing roller, ensuring smooth pulverization. The chain drive is less prone to slippage or failure under heavy loads and can stably drive the first pulverizing roller to rotate, achieving efficient pulverization of construction waste.

[0008] Furthermore, a second connecting shaft is fixed inside the second pulverizing roller. One end of the second connecting shaft passes through the pulverizing housing and is fixed to a fourth sprocket. The second drive mechanism includes a second motor fixed to the pulverizing housing. The output shaft of the second motor is fixed to a third sprocket, and a second chain is looped between the third and fourth sprockets. This chain drive efficiently transmits power from the second motor to the second pulverizing roller. The torque output by the second motor is transmitted to the fourth sprocket via the third sprocket and the second chain, which in turn drives the second pulverizing roller to rotate. This transmission method minimizes energy loss during power transmission, ensuring that the second pulverizing roller receives sufficient power to pulverize construction waste, thereby improving pulverization efficiency. Furthermore, pulverizing construction waste is a heavy-duty operation, and the second pulverizing roller encounters significant resistance during operation. The chain drive can withstand high torque. When the powerful power output of the second motor is transmitted to the second pulverizing roller via the third sprocket, the second chain, and the fourth sprocket, the chain and sprockets can withstand the enormous forces without damage due to overload, ensuring continuous and stable power transmission and stable operation of the second pulverizing roller.

[0009] Furthermore, both side walls of the crushing box are provided with horizontally arranged chutes, with the ends of the second connecting shaft respectively snapping into the two chutes. The adjustment mechanism includes a limit assembly and a movable assembly. The limit assembly constrains the second connecting shaft within the chutes, while the movable assembly controls the second connecting shaft's movement along the chutes. The limit assembly constrains the second connecting shaft within the chutes, ensuring that the second crushing roller maintains a stable position even when rotating and under heavy loads. By precisely controlling the position of the second connecting shaft, the spacing between the second crushing roller and the first crushing roller is maintained constant. This ensures uniform compression and crushing force during the crushing of construction waste, improving the precision and quality of the crushing process and resulting in a more uniform particle size. Furthermore, if soft construction waste becomes entangled between the first and second crushing rollers, causing a blockage, the movable assembly controls the second connecting shaft to slide along the chutes, moving the second crushing roller away from the first, thereby widening the gap between the two and facilitating the removal of the entangled waste. At the same time, when the device is regularly maintained, the second crushing tooth roller can also be moved to a suitable position through the moving component to facilitate its inspection, maintenance and replacement of parts.

[0010] Furthermore, the limiting assembly includes a slider, which is located in the slide groove and is sleeved on the outer wall of the second connecting shaft. Clamps are provided on both sides of the slider, and the clamps can limit the slider in the slide groove. The slider is sleeved on the outer wall of the second connecting shaft and is in the slide groove, which can provide precise positioning for the second connecting shaft. This allows the second crushing gear roller to be accurately positioned during operation and its relative position to the first crushing gear roller to be stable, ensuring the consistency and stability of the crushing operation and improving the crushing quality. In addition, the clamps on both sides of the slider limit the slider in the slide groove, effectively preventing the second connecting shaft from deviating or shaking during the operation of the equipment. When construction waste is crushed, a large impact force and vibration will be generated. If there is no restriction from the clamps, the second connecting shaft may deviate from the normal position, affecting the crushing effect and even causing damage to the device. The clamps ensure that the second connecting shaft always moves along the predetermined path to maintain the normal operation of the device.

[0011] Furthermore, the moving assembly includes a vertically arranged adjustment slot housing a bidirectional lead screw. A third motor is secured to one end of the lead screw. A first adjustment block is threadedly connected to the upper portion of the lead screw, which is hinged to one end of a first rotating rod, the other end of which is hinged to a second connecting shaft. A second adjustment block is threadedly connected to the lower portion of the lead screw, which is hinged to one end of a second rotating rod, the other end of which is hinged to the second connecting shaft. The bidirectional lead screw allows the upper first and lower second adjustment blocks to precisely move toward or away from each other, depending on the direction of the thread rotation, when the third motor drives the lead screw. By articulating the first and second rotating rods to the second connecting shaft, the linear motion of the first and second adjustment blocks is converted into a push or pull on the second connecting shaft, thereby precisely controlling the horizontal position of the second pulverizing roller. This feature enables the device to precisely adjust the spacing between the first and second pulverizing rollers according to user requirements, ensuring optimal pulverization.

[0012] Furthermore, the dust reduction mechanism includes a water pump, which is fixed to the outer wall of the crushing box. The output end of the water pump is connected to an annular water outlet pipe, which is fixed to the inner wall of the crushing box. The annular water outlet pipe is evenly distributed with water spray holes. The annular water outlet pipe is fixed to the inner wall of the crushing box and can surround the entire crushing area, so that the water sprayed from the water spray holes can evenly cover all parts of the crushing box, effectively suppressing the flying of dust in the entire crushing space and comprehensively reducing the dust concentration. The water spray holes are evenly distributed on the annular water outlet pipe, and water can be sprayed in a targeted manner to reduce dust according to the characteristics and location of dust generated during the crushing process. In areas where dust is generated more concentratedly, a relatively large amount of water can be provided, thereby enhancing the dust reduction effect.

[0013] Furthermore, a magnet is fixed on the outer wall of the crushing box, and the position of the magnet corresponds to the annular water outlet pipe. A magnet corresponding to the annular water outlet pipe is set on the outer wall of the crushing box to magnetize the sprayed water mist. The magnetized water mist particles will have weak magnetism and interact with the charged dust particles in the air, increasing the attraction between the dust particles and promoting their agglomeration into larger particles. These larger particles are more likely to settle under the action of gravity, thereby improving the dust reduction efficiency and effectively reducing the concentration of suspended dust in the air. In addition, after the water is magnetized, its surface tension and wettability will change, making it easier for the water mist to adsorb dust particles. The magnetized water mist can be more evenly distributed in the crushing box, fully contacting the dust, wrapping the dust and causing it to settle quickly, further improving the dust reduction effect.

[0014] Furthermore, a feed hopper is fixed to the top of the shredding box, and a first baffle and a second baffle are fixed inside the feed hopper. Both the first and second baffles are arranged at an angle. The inclined first and second baffles guide the construction waste fed into the feed hopper, allowing it to slide smoothly into the shredding box along the inclined direction of the baffles, preventing the waste from accumulating or spilling in the feed hopper and improving the smoothness and accuracy of feeding. Furthermore, the inclination angle of the first and second baffles can affect the speed at which the construction waste slides down. By adjusting the baffle angle, the speed at which the construction waste enters the shredding box can be controlled.

[0015] In a second aspect, the present invention further provides a method for using a construction waste dust reduction and crushing device, which is applied to the construction waste dust reduction and crushing device and comprises the following steps: In step one, the first and second drive mechanisms are simultaneously activated, controlling the first and second grinding rollers to rotate toward each other. The first and second grinding rollers begin to squeeze each other, crushing the construction waste. The construction waste is subjected to uniform squeezing and shearing forces between the first and second grinding rollers, resulting in a more uniform particle size after crushing. This facilitates the subsequent sorting, screening, and reuse of the crushed construction waste, improving the quality of the recycled material.

[0016] Step 2: Start the dust reduction mechanism and control it to spray water mist to settle the dust generated during the crushing process of construction waste. A large amount of dust will be generated when construction waste is crushed. Water mist can combine the dust particles with water, increase their weight and settle to the ground, effectively reducing the dust concentration in the air, reducing the dust flying around, and making the air in the workplace fresher.

[0017] Step three: When the soft construction waste is entangled between the first crushing gear roller and the second crushing gear roller and causes a blockage, the first drive mechanism and the second drive mechanism are turned off, and the second crushing gear roller is controlled by the adjustment mechanism to move in a direction away from the first crushing gear roller, and the entangled construction waste is cleaned; the distance between the first crushing gear roller and the second crushing gear roller is increased, so that the entangled construction waste can be more easily contacted, which is convenient for the operator to carry out the cleaning work.

[0018] Step 4: After cleaning is complete, the second pulverizing roller is controlled by the adjustment mechanism to return to its initial position. The first and second drive mechanisms are then restarted, and the first and second pulverizing rollers continue to pulverize the construction waste. Returning the second pulverizing roller to its initial position ensures that parameters such as the spacing and relative position between it and the first pulverizing roller are restored to their optimal working state. This ensures that after restarting, the pulverization effect remains the same as before, ensuring that the pulverized material has a uniform particle size that meets production requirements.

[0019] It can be seen from the above technical solutions that the advantages of the present invention are: this technical solution controls the first crushing tooth roller and the second crushing tooth roller to rotate in opposite directions respectively through the first drive mechanism and the second drive mechanism, and uses the mutual squeezing effect of the two to achieve efficient crushing of construction waste. At the same time, it is equipped with a dust reduction mechanism to spray water mist to settle the dust generated during the crushing process. When the soft construction waste is entangled between the first crushing tooth roller and the second crushing tooth roller and causes a blockage, or when the gap between the first crushing tooth roller and the second crushing tooth roller needs to be actively adjusted due to actual production needs, the two adjustment mechanisms can accurately control the movement of the two ends of the second crushing tooth roller respectively to ensure that the axis of the second crushing tooth roller is always parallel to the axis of the first crushing tooth roller during the entire adjustment process. In summary, this solution can ensure that the gap between the first crushing tooth roller and the second crushing tooth roller is always consistent, effectively avoiding the problem of increased wear caused by uneven gaps. By stabilizing the gap, the stability of the crushing effect is guaranteed, and the crushing effect is prevented from being reduced, thereby significantly improving the overall performance and reliability of the crushing device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solution of the present invention, the following is a brief introduction to the drawings required for the description. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 A schematic diagram of the structure of a specific embodiment of the present invention Figure 1 ; Figure 2 A schematic diagram of the structure of a specific embodiment of the present invention Figure 2 ; Figure 3 for Figure 2 A partial enlarged view of the middle part; Figure 4 A schematic diagram of the structure of a specific embodiment of the present invention Figure 3 ; Figure 5 A schematic diagram of the structure of a specific embodiment of the present invention Figure 4 ; Figure 6 The structure of the limit assembly in the specific embodiment of the present invention is shown in FIG. Figure 1 ; Figure 7 The structure of the limit assembly in the specific embodiment of the present invention is shown in FIG. Figure 2 .

[0022] In the figure: 1-crushing box, 2-first motor, 3-first sprocket, 4-first connecting shaft, 5-first crushing gear roller, 6-second sprocket, 7-first chain, 8-feed hopper, 9-first baffle, 10-second baffle, 11-adjusting mechanism, 12-dust reduction mechanism, 13-second motor, 14-third sprocket, 15-chute, 16-clamp, 17-second connecting shaft, 18-second crushing gear roller, 19-fourth sprocket, 20-second chain, 21-second rotating rod, 22-adjusting groove, 23-bidirectional screw, 24-third motor, 25-first adjusting block, 26-second adjusting block, 27-water pump, 28-annular water outlet pipe, 29-magnet, 30-support column, 31-first rotating rod, 32-slider. DETAILED DESCRIPTION

[0023] In order to make the purpose, features, and advantages of the present invention more obvious and easy to understand, the technical solutions of the present invention will be clearly and completely described below in conjunction with the drawings in this specific embodiment. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of them. Based on the embodiments in this patent, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this patent.

[0024] Example 1: A construction waste dust reduction and crushing device, such as Figure 1 、 2As shown, it includes a crushing box 1, inside which a first crushing gear roller 5 and a second crushing gear roller 18 are arranged in parallel, that is, the axis of the first crushing gear roller 5 and the axis of the second crushing gear roller 18 are arranged in parallel. The first crushing gear roller 5 and the second crushing gear roller 18 cooperate with each other to jointly undertake the task of crushing construction waste. The first crushing gear roller 5 is connected to a first drive mechanism, which provides rotational power for the first crushing gear roller 5. Similarly, the second crushing gear roller 18 is connected to a second drive mechanism, which provides rotational power for the second crushing gear roller 18. In addition, adjustment mechanisms 11 are provided on both sides of the crushing box 1. The two adjustment mechanisms 11 can respectively move the two ends of the second crushing gear roller 18. The crushing box 1 is also provided with a dust reduction mechanism 12, which can spray water mist to settle the dust generated during the crushing process.

[0025] In this embodiment, the crushing box 1 employs the following structure: The crushing box 1 is a rectangular shell with an open bottom, consisting of a top panel, two short side panels, and two long side panels. The top panel is rectangular, with the upper edges of the two short side panels welded to the two short sides of the top panel, and the upper edges of the two long side panels welded to the two long sides of the top panel. The short side panels are connected to adjacent long side panels at perpendicular angles. Support columns 30 are welded to the four corners of the bottom of the crushing box 1, providing support for the crushing box 1.

[0026] A feed hopper 8 is installed on the top of the crushing box 1 by welding. The feed hopper 8 is a rectangular shell with upper and lower openings. A connecting port is provided on the top plate of the crushing box 1, and the crushing box 1 is connected to the feed hopper 8 through the connecting port. A first baffle 9 and a second baffle 10 are provided inside the feed hopper 8, with two of each. The two first baffles 9 are arranged opposite to each other, and the two second baffles 10 are also arranged opposite to each other. The upper edge of the first baffle 9 is connected to the inner wall of the feed hopper 8 by welding, and the lower edge is inclined toward the inside of the feed hopper 8; similarly, the upper edge of the second baffle 10 is connected to the inner wall of the feed hopper 8 by welding, and the lower edge is also inclined toward the inside of the feed hopper 8. The lower edges of the two first baffles 9 and the two second baffles 10 are fixedly connected by welding. In this embodiment, the first grinding roller 5 employs the following structure: The first grinding roller 5 is cylindrical in shape, with a plurality of teeth fixed to its outer circumference. These teeth are integrally machined with the first grinding roller 5. A first connecting shaft 4 is disposed within the first grinding roller 5. The first connecting shaft 4 is fixedly connected to the first grinding roller 5 via bolts, with the axis of the first connecting shaft 4 coinciding with the axis of the first grinding roller 5. One end of the first connecting shaft 4 passes through the end face of the first grinding roller 5 and is rotationally connected to the grinding chamber 1 via a bearing. The other end also passes through the end face of the first grinding roller 5 and is rotationally connected to the grinding chamber 1 via a bearing, with the end of this end extending through the long side panel of the grinding chamber 1.

[0027] In this embodiment, the second grinding roller 18 employs the following structure: The second grinding roller 18 is cylindrical in shape, with a plurality of teeth fixed to its outer circumference. These teeth are integrally machined with the second grinding roller 18 and mesh with the teeth of the first grinding roller 5. A second connecting shaft 17 is located within the second grinding roller 18. The second connecting shaft 17 is fixedly connected to the second grinding roller 18 via bolts, with the axis of the second connecting shaft 17 coinciding with the axis of the second grinding roller 18. Horizontal slots 15 are provided on both long side panels of the grinding box 1. The ends of the second connecting shaft 17 extend through these slots, allowing the second connecting shaft 17 to slide along the length of the slots 15.

[0028] like Figure 4 As shown, in this embodiment, the first drive mechanism specifically employs the following structure: the first drive mechanism includes a first motor 2, which is bolted to the short side plate of the crushing box 1 near the first crushing gear roller 5. The output shaft of the first motor 2 is bolted to a first sprocket 3, with the axis of the first sprocket 3 coinciding with the axis of the output shaft of the first motor 2. A first connecting shaft 4, which passes through the long side plate of the crushing box 1, is bolted to a second sprocket 6, with the axis of the second sprocket 6 coinciding with the axis of the first connecting shaft 4. A first chain 7 is looped between the first sprocket 3 and the second sprocket 6.

[0029] In this embodiment, the second drive mechanism specifically employs the following structure: the second drive mechanism includes a second motor 13, which is bolted to the short side plate of the crushing box 1 near the second crushing gear roller 18. A third sprocket 14 is bolted to the output shaft of the second motor 13, with the axis of the third sprocket 14 coinciding with the axis of the output shaft of the second motor 13. A fourth sprocket 19 is bolted to the end of the second connecting shaft 17 near the third sprocket 14, with the axis of the fourth sprocket 19 coinciding with the axis of the second connecting shaft 17. A second chain 20 is looped between the third sprocket 14 and the fourth sprocket 19. In this embodiment, two adjustment mechanisms 11 are located on the two short side panels of the crushing box 1. The adjustment mechanisms 11 consist of a limiting assembly and a moving assembly. The limiting assembly constrains the second connecting shaft 17 within the chute 15, ensuring that the second crushing roller 18 maintains a stable position even when rotating and bearing heavy loads. The moving assembly controls the second connecting shaft 17 to slide along the chute 15, moving the second crushing roller 18 away from the first crushing roller 5, increasing the distance between them and facilitating the removal of entangled construction waste.

[0030] like Figure 6 、 7As shown, in this specific embodiment, the position limiting assembly specifically adopts the following structure: the position limiting assembly includes a slider 32, which is positioned within the chute 15. Its shape matches the chute 15 and allows it to slide along the chute 15. A light hole is defined in the center of the slider 32, whose centerline coincides with the axis of the second connecting shaft 17. A bearing is mounted within the light hole, with the outer ring of the bearing forming an interference fit with the light hole, and the inner ring of the bearing also forming an interference fit with the outer wall of the second connecting shaft 17. Clamping blocks 16 are provided on either side of the slider 32. The two clamping blocks 16 are located on the inner and outer sides of the crushing box 1, respectively. They are connected by bolts to clamp the slider 32 within the chute 15. Specifically, a bolt is inserted into one clamping block 16, passes through the chute 15, and exits from the other clamping block 16. The bolt is then tightened by a nut to clamp and limit the slider 32. like Figure 3 As shown, in this specific embodiment, the movable assembly specifically adopts the following structure: the movable assembly includes an adjustment slot 22, which is arranged vertically on the side of the long side plate of the crushing box 1 near the second motor 13. A bidirectional screw 23 is installed in the adjustment slot 22. One end of the bidirectional screw 23 is fixedly connected to the output shaft of the third motor 24 via a coupling. The third motor 24 is fixed to the top plate of the crushing box 1 by bolts. The upper thread of the bidirectional screw 23 rotates in opposite directions to the lower thread. The upper thread of the bidirectional screw 23 is connected to the first adjustment block 25, which is hinged to one end of the first rotating rod 31, and the other end of the first rotating rod 31 is hinged to the second connecting shaft 17. The lower thread of the bidirectional screw 23 is connected to the second adjustment block 26, which is hinged to one end of the second rotating rod 21, and the other end of the second rotating rod 21 is hinged to the second connecting shaft 17. like Figure 5 As shown, in this specific embodiment, the dust suppression mechanism 12 specifically employs the following structure: the dust suppression mechanism 12 includes a water pump 27, which is bolted to the outer wall of the crushing box 1. The output end of the water pump 27 is connected to an annular water outlet pipe 28, which is fixed to the inner wall of the crushing box 1 via a clip and has water spray holes evenly distributed on the annular water outlet pipe 28. The dust suppression mechanism 12 also includes magnets 29, which are bonded to the outer wall of the crushing box 1. In this embodiment, two magnets 29 are provided, and the positions of the two magnets 29 correspond to the annular water outlet pipe 28.

[0031] Example 2: Based on the construction waste dust reduction and crushing device provided in Example 1, this example further provides a method for using the construction waste dust reduction and crushing device, including the following steps: Step 1: Start the device and perform the crushing operation. Start the first motor 2 and the second motor 13 at the same time. When the first motor 2 is running, its output shaft drives the first sprocket 3 to rotate. The first sprocket 3 drives the second sprocket 6 to rotate synchronously with the first chain 7. The second sprocket 6 then drives the first crushing gear roller 5 to rotate through the first connecting shaft 4. When the second motor 13 is working, the output shaft drives the third sprocket 14 to rotate. The third sprocket 14 drives the fourth sprocket 19 to rotate synchronously with the help of the second chain 20. The fourth sprocket 19 drives the second crushing gear roller 18 to rotate through the second connecting shaft 17. At this time, the first crushing gear roller 5 and the second crushing gear roller 18 are rotating in opposite directions, and their teeth engage and squeeze each other, starting to crush the input construction waste. Step 2: Dust reduction operation begins. Turn on the water pump 27, which starts to inject water into the annular water outlet pipe 28 and applies pressure. Under the pressure of the water pump 27, the water in the annular water outlet pipe 28 is sprayed out from the water spray hole to form water mist. These water mists evenly cover all parts of the crushing box 1. During the crushing process, the water mist gradually combines with the generated dust, causing the dust to settle quickly. At the same time, the magnet 29 located on the outer wall of the crushing box 1 relative to the annular water outlet pipe 28 magnetizes the sprayed water mist. The magnetized water mist particles have weak magnetism and interact with the charged dust particles in the air, increasing the attraction between the dust particles, causing the dust to condense into larger particles, and further enhancing the dust settling effect. Step 3: Equipment Blockage Remedy. When soft construction waste becomes entangled between the first pulverizing roller 5 and the second pulverizing roller 18, causing a blockage, the first motor 2 and the second motor 13 are first turned off. The third motor 24 is then activated, driving the bidirectional lead screw 23. Because the upper and lower threads of the bidirectional lead screw 23 rotate in opposite directions, the rotation of the lead screw 23 causes the first adjustment block 25 to move upward along the adjustment slot 22, while the second adjustment block 26 moves downward along the adjustment slot 22. The first and second adjustment blocks 25 and 26 move synchronously in opposite directions, driving the first and second rotating rods 31 and 21, pulling the second connecting shaft 17 away from the first pulverizing roller 5. During this process, the slider 32 drives the second connecting shaft 17 and the second pulverizing roller 18 to slide within the slide slot 15, ensuring stability during movement. At this point, the second chain 20 is unwound. When the second pulverizing roller 18 reaches the desired position, the third motor 24 is stopped, and workers begin clearing the entangled construction waste. Step 4: Reset the equipment and continue the operation. After the construction waste is cleaned up, control the third motor 24 to rotate in the opposite direction, and the bidirectional screw 23 rotates in the opposite direction accordingly. The first adjustment block 25 moves downward along the adjustment slot 22, and the second adjustment block 26 moves upward along the adjustment slot 22. The first adjustment block 25 and the second adjustment block 26 move toward each other synchronously, driving the first rotating rod 31 and the second rotating rod 21 to push the second connecting shaft 17 in the direction close to the first crushing gear roller 5. The slider 32 drives the second connecting shaft 17 and the second crushing gear roller 18 to slide in the slide groove 15 to maintain the stability of movement. At this time, the second chain 20 gradually returns to its initial state. When the second crushing gear roller 18 returns to its initial position, turn off the third motor 24. Then start the first motor 2 and the second motor 13 again, and the first crushing gear roller 5 and the second crushing gear roller 18 continue to crush the construction waste. It can be seen from the above embodiments that the beneficial effects of the present invention are as follows: this specific embodiment controls the first crushing tooth roller and the second crushing tooth roller to rotate in opposite directions respectively through the first drive mechanism and the second drive mechanism, and utilizes the mutual squeezing effect of the two to achieve efficient crushing of construction waste, and is equipped with a dust reduction mechanism to spray water mist to settle the dust generated during the crushing process. When the soft construction waste is entangled between the first crushing tooth roller and the second crushing tooth roller and causes a blockage, or when the gap between the first crushing tooth roller and the second crushing tooth roller needs to be actively adjusted due to actual production needs, the two adjustment mechanisms can accurately control the movement of the two ends of the second crushing tooth roller respectively, ensuring that the axis of the second crushing tooth roller is always parallel to the axis of the first crushing tooth roller during the entire adjustment process. In summary, this specific embodiment can ensure that the gap between the first crushing tooth roller and the second crushing tooth roller is always consistent, effectively avoiding the problem of increased wear caused by uneven gaps. By stabilizing the gap, the stability of the crushing effect is guaranteed, and the crushing effect is prevented from being reduced, thereby significantly improving the overall performance and reliability of the crushing device.

[0032] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A construction waste dust reduction and crushing device, comprising a crushing box (1), characterized in that: A first crushing tooth roller (5) and a second crushing tooth roller (18) are provided inside the crushing box (1), the axis of the first crushing tooth roller (5) is parallel to the axis of the second crushing tooth roller (18), the first crushing tooth roller (5) is connected to a first driving mechanism, the first driving mechanism can drive the first crushing tooth roller (5) to rotate, and the second crushing tooth roller (18) is connected to a second driving mechanism, the second driving mechanism can drive the second crushing tooth roller (18) to rotate; both sides of the crushing box (1) are provided with adjustment mechanisms (11), the two adjustment mechanisms (11) can respectively move the two ends of the second crushing tooth roller (18); the crushing box (1) is also provided with a dust reduction mechanism (12), the dust reduction mechanism (12) can settle dust.

2. The construction waste dust reduction and crushing device according to claim 1, characterized in that: A first connecting shaft (4) is fixed inside the first crushing tooth roller (5), one end of the first connecting shaft (4) passes through the crushing box (1) and is fixed with a second sprocket (6), the first driving mechanism includes a first motor (2), the first motor (2) is fixed on the crushing box (1), the output shaft of the first motor (2) is fixed with a first sprocket (3), and a first chain (7) is looped between the first sprocket (3) and the second sprocket (6).

3. The construction waste dust reduction and crushing device according to claim 2, characterized in that: A second connecting shaft (17) is fixed inside the second pulverizing tooth roller (18), one end of the second connecting shaft (17) passes through the pulverizing box (1) and is fixed with a fourth sprocket (19), the second driving mechanism includes a second motor (13), the second motor (13) is fixed on the pulverizing box (1), the output shaft of the second motor (13) is fixed with a third sprocket (14), and a second chain (20) is looped between the third sprocket (14) and the fourth sprocket (19).

4. The construction waste dust reduction and crushing device according to claim 3, characterized in that: Both side walls of the crushing box (1) are provided with a slide groove (15), the slide groove (15) is arranged horizontally, and the two ends of the second connecting shaft (17) are respectively engaged in the two slide grooves (15). The adjustment mechanism (11) includes a limit component and a moving component. The limit component can limit the second connecting shaft (17) in the slide groove (15), and the moving component can control the second connecting shaft (17) to slide along the slide groove (15).

5. The construction waste dust reduction and crushing device according to claim 4, characterized in that: The limiting assembly includes a slider (32), the slider (32) is located in the slide groove (15), and the slider (32) is sleeved on the outer wall of the second connecting shaft (17), and clamping blocks (16) are provided on both sides of the slider (32), and the clamping blocks (16) can limit the slider (32) in the slide groove (15).

6. The construction waste dust reduction and crushing device according to claim 4, characterized in that: The moving assembly includes an adjusting slot (22), the adjusting slot (22) is vertically arranged, a bidirectional lead screw (23) is arranged in the adjusting slot (22), one end of the bidirectional lead screw (23) is fixed with a third motor (24), the upper part of the bidirectional lead screw (23) is threadedly connected to a first adjusting block (25), the first adjusting block (25) is hinged to one end of a first rotating rod (31), the other end of the first rotating rod (31) is hinged to a second connecting shaft (17), the lower part of the bidirectional lead screw (23) is threadedly connected to a second adjusting block (26), the second adjusting block (26) is hinged to one end of a second rotating rod (21), and the other end of the second rotating rod (21) is hinged to the second connecting shaft (17).

7. The construction waste dust reduction and crushing device according to claim 1, characterized in that: The dust suppression mechanism (12) includes a water pump (27), which is fixed on the outer wall of the crushing box (1). The output end of the water pump (27) is connected to an annular water outlet pipe (28), which is fixed on the inner wall of the crushing box (1). Water spray holes are evenly distributed on the annular water outlet pipe (28).

8. The construction waste dust reduction and crushing device according to claim 7, characterized in that: A magnet (29) is fixed on the outer wall of the crushing box (1), and the position of the magnet (29) corresponds to the annular water outlet pipe (28).

9. The construction waste dust reduction and crushing device according to claim 1, characterized in that: A feed hopper (8) is fixed on the top of the crushing box (1), and a first baffle (9) and a second baffle (10) are fixed inside the feed hopper (8), and both the first baffle (9) and the second baffle (10) are arranged at an inclination.

10. A method for using a construction waste dust reduction and crushing device, characterized in that: The construction waste dust reduction and crushing device as described in any one of claims 1 to 9 comprises the following steps: Step 1: simultaneously start the first drive mechanism and the second drive mechanism, control the first crushing tooth roller (5) and the second crushing tooth roller (18) to rotate in opposite directions, and the first crushing tooth roller (5) and the second crushing tooth roller (18) begin to squeeze each other to crush the construction waste; Step 2: start the dust suppression mechanism (12) and control it to spray water mist to settle the dust generated during the crushing of construction waste; Step 3: When the soft construction waste is entangled between the first crushing tooth roller (5) and the second crushing tooth roller (18) and causes a blockage, the first drive mechanism and the second drive mechanism are turned off, and the second crushing tooth roller (18) is controlled by the adjustment mechanism (11) to move in a direction away from the first crushing tooth roller (5), and the entangled construction waste is cleared; Step 4: After cleaning, the second crushing tooth roller (18) is controlled to return to the initial position through the adjustment mechanism (11), and the first drive mechanism and the second drive mechanism are started again, and the first crushing tooth roller (5) and the second crushing tooth roller (18) continue to crush the construction waste.

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