Treatment equipment and treatment method for solid waste

Abstract

The invention relates to the field of plastic recycling, and discloses solid waste treatment equipment and method, and the technical scheme is characterized in that the solid waste treatment equipment comprises a treatment box body; the crushing hopper is arranged in the treatment box body, and a crushing roller is arranged in the crushing hopper; the recycling box and the backflow box are arranged in the treatment box body and located at the bottom of the crushing hopper, and the backflow box is located at the top of the recycling box and smaller than the recycling box; a dynamic matching mechanism is formed through reciprocating motion of the backflow box, shaking of the screening net and synchronous conveying of the backflow component, and the screening process, the backflow process and the crushing process are coordinated. According to the design, the movement speed of the backflow box, the vibration frequency of the screen and the conveying speed of the backflow component can be dynamically adjusted according to the rotating speed of the crushing roller, it is ensured that particles on the screen are always in a proper distribution state in each period, and particle overstock or insufficient screening is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of plastic recycling, and in particular to a solid waste processing device and a solid waste processing method. Background Art

[0002] With the rapid development of industrialization and urbanization, plastic products have been widely used in packaging, construction, automobiles, electronics and other fields. However, due to the stability of plastic materials themselves, they are difficult to degrade naturally after being discarded, causing serious environmental pollution problems. The treatment of plastic waste has become one of the hot issues of global concern. At present, the main methods of plastic waste treatment include landfill, incineration, chemical recycling and mechanical recycling. Among them, mechanical recycling is widely used because of its low energy consumption and less impact on the environment.

[0003] In the process of recycling plastic waste, crushing is a crucial link. Its main purpose is to break large plastic waste into small particles for subsequent cleaning, melting, regeneration or modification.

[0004] However, existing waste plastic recycling equipment usually adopts a one-way conveying and crushing method, which results in the plastic only being able to undergo a single crushing process during the conveying process. It is easy for some plastics to not be fully crushed, resulting in uneven particle size of the fragments, affecting the subsequent recycling efficiency. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a solid waste treatment device and a treatment method, aiming to alleviate the above-mentioned problems at least to a certain extent.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions: A solid waste treatment device, comprising: Processing box; A crushing bucket is arranged in the processing box, and a crushing roller is arranged in the crushing bucket; The recovery box and the reflux box are arranged in the processing box body, and are located at the bottom of the crushing bucket. The reflux box is located at the top of the recovery box, and the reflux box is smaller than the recovery box. A sub-screen is arranged between the crushing bucket and the reflux box, and the sub-screen is staggered with the reflux box; A driving part provided between the processing box and the crushing rollers, used for rotating the two crushing rollers so that the two crushing rollers rotate relative to each other; A sorting component disposed between the reflux box and the sub-screen, used for shaking the sub-screen up and down and rotating the sub-screen; The reflux component disposed between the reflux box and the crushing bucket is used to transport the plastic particles in the reflux box into the crushing bucket.

[0007] Preferably, the driving part includes a crushing chamber opened in the crushing bucket, the crushing roller is rotatably connected to the crushing chamber, one end of the crushing roller rotates through the crushing chamber and the crushing bucket to extend to one side of the processing box, the processing box is connected to a motor, the driving shaft of the motor is connected to one of the crushing rollers, and the two crushing rollers are respectively connected to mutually meshing gears a.

[0008] Preferably, a fixing plate is connected in the processing box, a guide plate is connected on the top of the fixing plate, the guide plate has a triangular cross section and is located at one end of the sub-screen and corresponds to the reflux box.

[0009] Preferably, the sorting component includes a sub-screen plate arranged in the processing box body, the sub-screen mesh is arranged on the sub-screen plate, one side of the interior of the processing box body is rotatably connected to a connecting rod slidably connected to the sub-screen plate, the bottom of the sub-screen plate is also slidably connected to a guide rail connected to the reflux box, and a spring a is connected between the guide rail, the connecting rod and the sub-screen plate.

[0010] Preferably, the sorting component is capable of shaking the sub-screen when the reflux box moves; The sorting component also includes a concave-convex plate connected to the bottom of the sub-screening plate, one side of the reflux box is connected to a top rod that contacts the concave surface of the concave-convex plate, the guide rail includes a straight section, and the reflux box is connected to a guide rod that is slidably connected to the straight section of the guide rail.

[0011] Preferably, the sorting component is capable of rotating the sub-screen when moving the reflux box to a preset position; The sorting component also includes an extension plate slidably connected to one end of the sub-screen plate and in contact with the fixed plate, a spring b is connected between the extension plate and the sub-screen plate, an inclined opening is provided at the bottom of the fixed plate, and the guide rail also includes an inclined section, which is connected to the straight section.

[0012] Preferably, the sorting component can close the bottom of the crushing bucket when the reflux box is moved to a preset position, so that the particles on the surface of the sub-screen slide into the reflux box; The sorting component also includes a feed opening opened at the bottom of the crushing bucket and connected to the crushing chamber, a plurality of baffles are slidably connected in the feed opening, a connecting plate is commonly connected to one side of the plurality of baffles, the connecting plate is slidably connected to one side of the crushing bucket, and a spring c is connected between the connecting plate and the crushing bucket, a slide rail is connected to one side of the crushing bucket, a slide rod is slidably connected to the slide rail, a connecting rod a rotatably connected to the sliding rod and connected to the connecting plate, a connecting rod b is connected to one side of the top rod, and the connecting rod b contacts the sliding rod.

[0013] Preferably, the reflux box is capable of reciprocating along a predetermined path when the crushing roller rotates; The crushing roller is connected to a gear b, which is an incomplete gear. A rack a matched with the gear b is slidably connected to one side of the crushing bucket. A spring d is connected between the rack a and the crushing bucket. The rack a is connected to the rack b. A lead screw is rotatably connected to the processing box, and a gear c meshing with the rack b is connected to the lead screw. The connecting rod b is connected to a connecting rod c threadedly connected to the lead screw.

[0014] Preferably, the reflux component is capable of conveying particles when the reflux box moves; The reflux component includes a conveying channel connected to the crushing bucket, the bottom of the conveying channel passes through the crushing bucket, the guide plate and the fixed plate and extends into the reflux box, the processing box is connected with a baffle, a dragon shaft extending into the conveying channel is rotatably connected to the baffle, a gear d is connected to the dragon shaft, a rack c meshing with the gear d is connected to one side of the reflux box, and a ratchet mechanism is provided between the gear d and the dragon shaft.

[0015] A method for treating solid waste, applicable to any of the solid waste treatment equipment described above, comprises the following specific steps: Step 1: The operator puts the plastic waste into the crushing bucket, and the driving unit drives the two crushing rollers to rotate relative to each other to perform preliminary crushing on the plastic waste, so that it is crushed into plastic particles that are easy to melt; Step 2: During the crushing process, the formed plastic particles fall from the bottom of the crushing bucket onto the sub-screen. Smaller particles can pass through the sub-screen smoothly and enter the recycling box, while larger plastic particles are blocked on the sub-screen and wait for further processing; Step 3: When the driving unit drives the crushing roller to rotate, the reflux box moves to the right along the predetermined path. During this process, the sorting component drives the sub-screen to shake up and down, so that the particles on the sub-screen are constantly shaken to improve the screening efficiency and enable more small particles to pass through the sub-screen into the recovery box; Step 4: When the reflux box moves to the preset position, the discharge port at the bottom of the crushing bucket is closed, and the sorting component tilts the left end of the sub-screen toward the reflux box, so that the larger particles on the sub-screen can slide smoothly into the reflux box; Step 5: The reflux box returns to the left along the predetermined path. At this time, the reflux component starts to transport the insufficiently crushed particles in the reflux box back to the crushing bucket for secondary crushing, thereby improving the crushing efficiency and ensuring that the particle size meets the requirements; Step 6: When the reflux box returns to its initial position, the sorting components return to their original positions, making the screen return to a horizontal state. At the same time, the discharge port at the bottom of the crushing bucket is reopened, preparing for the next round of crushing and screening.

[0016] In summary, the present invention mainly has the following beneficial effects: This application adopts the designs of reciprocating movement of the reflux box, up and down shaking of the sub-screen, and rotation angle adjustment to ensure that the plastic particles can be evenly distributed on the screen, avoiding the accumulation of particles or insufficient screening in traditional methods. Through the dynamic coordination of the reflux box and the sub-screen, during each screening process, the particles can be fully distributed and vibrated on the screen, so that the particles can pass through the mesh smoothly, and large particles will not block the passage of small particles, avoiding the occurrence of particle overlap or suppression. Compared with a fixed inclined screen, this design can effectively improve the screening accuracy, ensuring that particles that meet the size requirements can enter the recovery box smoothly, and particles that do not meet the standards can be orderly returned to the crushing bucket for secondary crushing, avoiding the occurrence of misscreening problems.

[0017] The present application uses the coordinated design of the reflux box and the reflux component to enable the insufficiently crushed plastic particles to be orderly returned to the crushing bucket for secondary crushing when the reflux box moves. This reflux process cooperates with the screening process to ensure the efficient and orderly transportation and reflux of particles. When the reflux box moves to the right to the preset position, the bottom of the crushing bucket is closed and the falling of new particles is suspended, which avoids interfering with the collection of plastic particles in the reflux box during the screening process and ensures that the current batch of particles can complete the screening and reflux processing independently. At the same time, the design of the reflux box makes the accumulation of plastic particles in the reflux box have a certain regularity. Specifically, when the reflux box moves to the right and receives larger particles, the plastic particles will slide down to the middle area of ​​the reflux box and accumulate there. When the reflux box returns to the initial position to the left, the particles accumulated in the middle position will gradually approach the reflux component as the reflux box returns to its original position. The reflux component plays a role in the movement of the reflux box, gradually guiding these particles into the reflux component. And finally, the insufficiently crushed particles are transported to the crushing bucket for secondary crushing. This design ensures that the particles in the reflux box can be moved in an orderly manner according to the homing trajectory of the reflux box and approach the reflux component, making the reflux process of the particles more orderly.

[0018] This application forms a dynamic matching mechanism by setting the reciprocating movement of the reflux box, the shaking of the sub-screen and the synchronous conveying of the reflux component, so that the screening, reflux and crushing processes are coordinated. This design can dynamically adjust the movement speed of the reflux box, the vibration frequency of the screen and the conveying rate of the reflux component according to the rotation speed of the crushing roller, ensuring that the particles on the screen are always in a proper distribution state in each cycle, avoiding particle backlog or insufficient screening. By dynamically adjusting the movement rhythm of the reflux box to match the crushing rate, efficient energy utilization and precise screening are finally achieved in the waste plastic recycling process. This design greatly improves the operating efficiency and processing capacity of the equipment and optimizes the overall process of plastic waste recycling and treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 is a cross-sectional schematic diagram of the processing box structure of the present invention; Figure 3 It is a schematic diagram of the structure of the crushing roller of the present invention; Figure 4 It is a schematic diagram of the guide plate structure of the present invention; Figure 5 It is a schematic diagram of the structure of the reflux box of the present invention; Figure 6 Schematic diagram of the reflux box structure of the present invention before and after movement; Figure 7 It is a schematic diagram of the structure of the sub-screening plate of the present invention; Figure 8 It is a schematic diagram of the crushing bucket structure of the present invention; Fig. 9 It is a schematic diagram of the baffle structure of the present invention; Fig.10 It is a schematic diagram of the ratchet mechanism structure of the present invention.

[0020] Reference numerals: 100, processing box; 101, crushing bucket; 102, crushing roller; 103, recovery box; 104, reflux box; 105, sub-screen; 200, crushing chamber; 201, motor; 202, gear a; 203, fixed plate; 204, guide plate; 300, sub-screen plate; 301, connecting rod; 302, guide rail; 303, straight section; 304, inclined section; 305, spring a; 306, concave-convex plate; 307, top rod; 308, guide rod; 309, extension plate; 310, spring b; 311, inclined opening; 400, feed port; 401, baffle; 402, connecting plate; 403, spring c; 404, slide rail; 405, slide rod; 406, connecting rod a; 407, connecting rod b; 500, gear b; 501, rack a; 502, spring d; 503, rack b; 504, lead screw; 505, gear c; 506, connecting rod c; 600, conveying channel; 601, baffle; 602, dragon shaft; 603, gear d; 604, rack c; 605, ratchet mechanism. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] refer to Figure 1-Figure 10 , a solid waste treatment device, comprising: Processing box 100; A crushing bucket 101 is arranged in the processing box 100, and a crushing roller 102 is arranged in the crushing bucket 101; The recovery box 103 and the reflux box 104 are arranged in the processing box 100, and are located at the bottom of the crushing bucket 101. The reflux box 104 is located at the top of the recovery box 103, and the reflux box 104 is smaller than the recovery box 103; A sub-screen 105 is disposed between the crushing bucket 101 and the reflux box 104, and the sub-screen 105 and the reflux box 104 are staggered; The driving part is arranged between the processing box 100 and the crushing rollers 102, and is used to rotate the two crushing rollers 102, so that the two crushing rollers 102 rotate relative to each other; A sorting component disposed between the reflux box 104 and the sub-screen 105, used to shake the sub-screen 105 up and down, and the sorting component can shake the sub-screen 105 when the reflux box 104 moves; The reflux component disposed between the reflux box 104 and the crushing bucket 101 is used to transport the plastic particles in the reflux box 104 to the crushing bucket 101. The reflux component can transport the particles when the reflux box 104 moves; The sorting component can rotate the sub-screen 105 when the reflux box 104 is moved to a preset position, and close the bottom of the crushing bucket 101, so that the particles on the surface of the sub-screen 105 slide into the reflux box 104; Wherein, the reflux box 104 can reciprocate along a predetermined path when the crushing roller 102 rotates; By setting up the crushing bucket 101, when in use, the operator can put the plastic waste into the crushing bucket 101 before melting the plastic, and the set driving unit drives the two crushing rollers 102 to rotate relative to each other, so as to perform preliminary crushing on the plastic waste. The plastic particles formed in the crushing process fall from the bottom of the crushing bucket 101 onto the sub-screen 105, and the particles larger than the preset mesh can fall from the sub-screen 105 into the recovery box 103, while the larger plastic particles are blocked on the surface of the sub-screen 105. Specifically, when the driving unit drives the crushing roller 102 to rotate, the reflux box 104 can move back and forth on a predetermined path. When the reflux box 104 moves to the right, the sorting component arranged can shake the sub-screen 105 up and down, causing the particles on the sub-screen 105 to shake continuously. In the initial state, the reflux box 104 and the sub-screen 105 are offset. The reflux box 104 is located on the bottom left side of the sub-screen 105. Smaller particles pass through the sub-screen 105 smoothly and enter the recovery box 103, while larger particles that fail to pass through remain on the sub-screen 105.

[0023] When the reflux box 104 moves to the right to a preset position, the arranged sorting component can rotate the angle of the sub-screen 105 so that the left end of the sub-screen 105 rotates toward the reflux box 104, and the reflux box 104 moves to the right to a preset position corresponding to the left end of the sub-screen 105. At this time, the plastic particles blocked on the surface of the sub-screen 105 can slide into the reflux box 104 along the sub-screen 105 inclined toward the reflux box 104, thereby ensuring that the plastic particles that are not fully crushed are effectively collected.

[0024] Furthermore, when the reflux box 104 moves to the right to a preset position, the bottom of the crushing bucket 101 can be closed to stop the plastic particles from falling from the crushing bucket 101 , thereby preventing new plastic particles from interfering with the collection process of the plastic particles in the reflux box 104 .

[0025] Then the reflux box 104 returns to the left along the predetermined path. During this process, the reflux component can transport the insufficiently crushed plastic particles in the reflux box 104 to the crushing bucket 101 for secondary crushing. During this process, the movement of the reflux box 104 drives the sorting component to reset, so that the sub-screen 105 returns to the initial horizontal state, and the bottom of the crushing bucket 101 is opened, ready for the next round of screening cycle.

[0026] In addition, when the reflux box 104 moves to the right and receives larger plastic particles, the position of the reflux component remains unchanged. After entering the reflux box 104, the plastic particles will slide down to the middle area of ​​the reflux box 104 and accumulate there. As the reflux box 104 returns to the initial position to the left, these accumulated plastic particles gradually approach the reflux component, and during the movement of the reflux box 104, they are guided by the reflux component to be transported to the crushing bucket 101 for secondary crushing. During the entire cycle, the moving trajectory of the reflux box 104 is coordinated with the fixed position of the reflux component, so that the plastic particles that are not fully crushed can be refluxed in an orderly manner, and will not be randomly distributed or accumulated too much in the reflux box 104, thereby avoiding affecting the conveying efficiency.

[0027] In the present application, the sub-screen 105 is set horizontally, and the sub-screen 105 is rotated after sufficient vibration and screening, and collected by the reflux box 104. Compared with the sub-screen 105 with a fixed tilt directly set, although some larger particles can slide down to the reflux box 104 along the tilt angle, when the plastic particles fall, some particles that do not contact the mesh surface of the fixed sub-screen 105 may slide directly without sufficient screening, resulting in some particles that have reached the standard size being mistakenly sent to the reflux box 104, affecting the uniformity of the final recovered particles. The specific reason is that on the fixed tilted sub-screen 105, when larger particles slide down along the inclined screen surface, their volume is large and they will occupy part of the screen area. If larger particles slide or stay along the mesh, they will directly block the passage of smaller particles. This blocking effect is mainly manifested in particle overlap: large particles may cover the mesh on the screen, causing small particles to be unable to pass; such as friction and extrusion: larger particles may exert extrusion force on smaller particles, causing small particles to be suppressed and unable to pass through the mesh smoothly. The present application adopts the method of up and down shaking + rotation angle adjustment to first allow the particles to be fully distributed on the screen surface, and then adjust the screen angle at a specific time point to allow large particles to slide orderly to the reflux box 104, overcoming the problems of particle blocking, misclassification and uneven screening that exist in the fixed inclined screen during the screening process.

[0028] Furthermore, when the reflux box 104 reaches the preset position, the sub-screen 105 is rotated and the bottom of the crushing bucket 101 is closed, which can not only prevent new plastic particles from continuously falling onto the screen when the sub-screen 105 rotates, but also can play a role in sorting the plastic particles in batches. Specifically, when the reflux box 104 reaches the preset position, the sub-screen 105 rotates, so that the large particles on the screen slide smoothly to the reflux box 104, and the closing of the bottom of the crushing bucket 101 ensures that no new particles enter the screen during this process, so that the current batch of particles can be screened independently. By allowing the plastic particles to be fully distributed on the screen before screening and reflowing, it can be ensured that the screen only processes the current batch of particles, avoiding the impact of new particles causing screening chaos, improving the accuracy of screening, and allowing particles that meet the size requirements to enter the recovery box 103 smoothly, while particles that do not meet the size requirements are orderly returned to the crushing bucket 101. Since the bottom of the crushing bucket 101 is closed during the screening process, the number of large particles entering the reflux box 104 is controllable in each cycle, preventing too many particles from returning to the crushing bucket 101 at one time, causing excessive secondary crushing load and affecting the stability of equipment operation. If batch screening is not performed, a large number of incompletely crushed particles may continue to accumulate on the surface of the screen, affecting the screening effect, and even causing some particles that have reached the standard to be mistakenly returned, adding unnecessary secondary crushing processes and causing energy waste. Batch screening can reasonably allocate the particle flow path and improve the energy efficiency of the entire processing flow.

[0029] Furthermore, in the present application, when the reflux box 104 moves, the sorting component shakes the sub-screen 105 so that the plastic particles on the screen can be fully dispersed to avoid affecting the screening effect due to accumulation or adhesion. When the reflux box 104 moves to the preset position, the bottom of the crushing bucket 101 is closed and the sub-screen 105 is rotated. At the same time, the reflux component synchronously transports the particles during the movement of the reflux box 104, so that the reflux process and the screening process cooperate with each other to ensure that the plastic particles that do not meet the particle size requirements can smoothly return to the crushing bucket 101 for secondary crushing. Specifically, the rotation speed of the crushing roller 102 determines the crushing rate of the plastic waste, that is, the amount of plastic particles produced per unit time. If the movement speed of the reflux box 104 is too fast, the large particles on the screen may enter the reflux box 104 before they can be fully sorted, affecting the screening accuracy; if the reflux box 104 moves too slowly, the particles produced by the crushing may accumulate too much on the screen, increasing the screening burden, and even causing the screen to be blocked, affecting the screening efficiency. By controlling the reciprocating frequency of the reflux box 104 to adapt it to the crushing rate, it is ensured that the particles on the screen are always in a proper distribution state to avoid particle accumulation or insufficient screening.

[0030] Furthermore, the reflux component conveys particles synchronously while the reflux box 104 moves, and adjusts the reflux rate by the movement rhythm of the reflux box 104, so that the particles that are not fully crushed can be evenly and orderly refluxed. By adjusting the movement rhythm of the reflux box 104, the vibration frequency of the screen and the conveying rate of the reflux component, the screening, reflux and crushing processes are balanced, ensuring the efficient and orderly operation of the entire equipment and improving the recycling rate of waste plastics.

[0031] The present application forms a dynamic matching mechanism by setting the reciprocating movement of the reflux box 104, the shaking of the sub-screen 105 and the synchronous conveying of the reflux components, so that the working rhythm of each link is coordinated with the crushing speed. This design not only improves the screening accuracy and avoids particle accumulation or misscreening, but also optimizes the reflux process, so that particles that do not meet the standards can be orderly refluxed for secondary crushing, and finally achieve efficient and uniform plastic waste recycling and treatment.

[0032] As a further solution of the present invention, the driving part includes a crushing chamber 200 opened in the crushing bucket 101, the crushing roller 102 is rotatably connected in the crushing chamber 200, one end of the crushing roller 102 rotates through the crushing chamber 200 and the crushing bucket 101 to extend to one side of the processing box 100, and the processing box 100 is connected to a motor 201, and the driving shaft of the motor 201 is connected to one of the crushing rollers 102; By providing the motor 201, the crushing roller 102 can be driven efficiently, ensuring that the crushing roller 102 rotates continuously in the crushing bucket 101. The drive shaft of the motor 201 is connected to the crushing roller 102, so that the power of the motor 201 is directly transmitted to the crushing roller 102, and the plastic waste can be crushed efficiently. The rotation speed of the motor 201 can be adjusted to accurately control the rotation speed of the crushing roller 102, thereby adjusting the crushing force to meet the processing requirements of different types of plastic waste.

[0033] As a further solution of the present invention, the driving unit further includes a gear a202 connected to the two crushing rollers 102, and the two gears a202 are meshed with each other; By setting the gear a202, when the motor 201 drives one of the crushing rollers 102 to rotate, the gear a202 transmits the power transmitted by the motor 201 to the other crushing roller 102 through the meshing of the gears, so that the other crushing roller 102 can rotate in the opposite direction. This relative rotation design can ensure the mutual cooperation between the crushing rollers 102, so as to efficiently clamp, compress and gradually crush the plastic waste. The meshing design of the gear a202 can stably maintain the relative movement between the two crushing rollers 102, so that they maintain a consistent rotation direction and speed throughout the crushing process, avoiding blockage or uneven crushing due to asynchrony.

[0034] As a further solution of the present invention, a fixing plate 203 is connected to the processing box 100, and a guide plate 204 is connected to the top of the fixing plate 203. The guide plate 204 has a triangular cross section and is located at one end of the sub-screen 105, corresponding to the reflux box 104; By providing the guide plate 204 , the particles falling from the crushing bucket 101 can be effectively guided to accurately fall onto the surface of the sub-screen 105 , so that the particles meeting the standards can fall into the recovery box 103 .

[0035] As a further solution of the present invention, the sorting component includes a sub-screen plate 300 arranged in the processing box 100, and the sub-screen mesh 105 is arranged on the sub-screen plate 300. A connecting rod 301 slidably connected to the sub-screen plate 300 is rotatably connected to one side of the inner side of the processing box 100. The bottom of the sub-screen plate 300 is also slidably connected to a guide rail 302 connected to the reflux box 104. A spring a305 is connected between the guide rail 302, the connecting rod 301 and the sub-screen plate 300. By setting the spring a305, when the sub-screen plate 300 is moved upward, the spring a305 is stretched to generate elastic force. When the sub-screen plate 300 loses the force to move upward, the spring a305 releases potential energy to return the sub-screen plate 300. This stretching force causes the sub-screen plate 300 and the sub-screen mesh 105 to shake or vibrate up and down, thereby promoting the continuous vibration and dispersion of the particles on the screen mesh. This vibration helps to improve the screening efficiency, so that the particles that meet the standards can pass through the sub-screen mesh 105 more quickly.

[0036] As a further solution of the present invention, the sorting component can shake the sub-screen 105 when the reflux box 104 moves; The sorting component also includes a concave-convex plate 306 connected to the bottom of the sub-screening plate 300, a top rod 307 in contact with the concave surface of the concave-convex plate 306 is connected to one side of the reflux box 104, the guide rail 302 includes a straight section 303, and the reflux box 104 is connected to a guide rod 308 slidably connected to the straight section 303 of the guide rail 302; By setting the guide rod 308, the guide rod 308 cooperates with the straight section 303 of the guide rail 302, the guide rail 302 and the sub-screen plate 300 slide together, and the connecting rod 301 slides together with the sub-screen plate 300, the position of the sub-screen plate 300 is restricted so that the sub-screen plate 300 can only move up and down. Specifically, when the reflux box 104 moves to the right, the guide rod 308 can slide on the straight section 303 of the guide rail 302 without pushing the sub-screen plate 300. During the movement of the reflux box 104, the top rod 307 can follow the movement. During this process, the top rod 307 moves on the bottom surface of the concave-convex plate 306. When the top rod 307 moves to the convex surface of the concave-convex plate 306, it can lift the sub-screen plate 300 and stretch the spring a305. When the top rod 307 leaves the convex surface, the spring a305 releases potential energy to return the sub-screen plate 300, thereby achieving the purpose of driving the sub-screen plate 300 and the sub-screen 105 thereon to shake and vibrate up and down during the movement of the reflux box 104. This design enables the sub-screen 105 to be effectively vibrated during the movement of the reflux box 104, thereby promoting the continuous dispersion, screening and sliding of particles on the screen, ensuring the smooth progress of the screening process.

[0037] As a further solution of the present invention, the sorting component can rotate the sub-screen 105 when moving the reflux box 104 to a preset position; The sorting component further includes an extension plate 309 slidably connected to one end of the sub-screening plate 300 and in contact with the fixed plate 203, a spring b310 is connected between the extension plate 309 and the sub-screening plate 300, an inclined opening 311 is provided at the bottom of the fixed plate 203, and the guide rail 302 further includes an inclined section 304, which is connected to the straight section 303; By setting the inclined section 304, when the reflux box 104 initially moves to the right, the guide rod 308 can move on the straight section 303 of the guide rail 302. In this process, the top rod 307 and the concave-convex plate 306 can be used to shake the sub-screen plate 300 up and down. When the guide rod 308 moves to the inclined section 304, the top rod 307 completely leaves the concave-convex plate 306 for avoidance. The sub-screen plate 300 no longer vibrates up and down. As the reflux box 104 moves, the guide rod 308 moves with the inclined section 304 of the guide rail 302, and the guide rail 302 slides up and down and is connected to the sub-screen plate 300 with a spring a305. The squeezing and compression of the guide rod 308 can make the sub-screen plate 300 rotate with the bottom of the connecting rod 301 as the center of the circle, thereby changing the angle of the sub-screen 105. When the reflux box 104 moves to the preset position, the angle of the sub-screen 105 is adjusted, and the inclined screen allows large particles to slide smoothly into the reflux box 104. This achieves the purpose of rotating the sub-screen 105. Through such a design, the sorting component can achieve accurate screen rotation during the movement of the reflux box 104, and through the setting of the inclined section 304, it is ensured that the movement of the sub-screen 105 is more stable and orderly, avoiding the influence of unnecessary fluctuations on the screening results. By setting the extension plate 309, the initial state of the spring b310 set between the extension plate 309 and the sub-screen plate 300 is extended compression, and has potential energy. When the sub-screen plate 300 rotates, the extension plate 309 will gradually leave the fixed plate 203, and slide along the inclined opening 311 under the action of the spring b310 as the sub-screen plate 300 rotates, so that the length of the sub-screen plate 300 can be extended, and a longer sub-screen plate 300 can be formed, which is closer to the reflux box 104. When releasing particles, large particles of plastic can be prevented from accidentally falling into the recycling box 103, affecting the standard recycled particles. In addition, when the reflux box 104 is subsequently returned to its position, the extension plate 309 will touch the inclined opening 311 as the sub-screen plate 300 is reset and rotated, and gradually return to the compression spring b310. Through this design, the extension plate 309 can fill the gap between the sub-screen plate 300 and the fixed plate 203 required for rotation during the rotation process, ensuring that the sub-screen plate 300 is more closely fitted to the fixed plate 203 when resetting, thereby avoiding the reduction of screening accuracy or particle leakage due to excessive gap.

[0038] As a further solution of the present invention, the sorting component can close the bottom of the crushing bucket 101 when the reflux box 104 is moved to a preset position, so that the particles on the surface of the sub-screen 105 slide into the reflux box 104; The sorting component also includes a feed opening 400 opened at the bottom of the crushing bucket 101 and connected to the crushing chamber 200, wherein a plurality of baffles 401 are slidably connected in the feed opening 400, a connecting plate 402 is commonly connected to one side of the plurality of baffles 401, the connecting plate 402 is slidably connected to one side of the crushing bucket 101, and a spring c403 is connected between the connecting plate 402 and the crushing bucket 101, a slide rail 404 is connected to one side of the crushing bucket 101, a slide rod 405 is slidably connected to the slide rail 404, a connecting rod a406 rotatably connected to the sliding rod 405 and connected to the connecting plate 402, a connecting rod b407 is connected to one side of the top rod 307, and the connecting rod b407 contacts the sliding rod 405; By setting the spring c403, the initial state of the spring c403 is compressed and has potential energy. When the connecting rod b407 moves, it can drive the reflux box 104 to move to the right through the top rod 307. During this process, the spring c403 gradually releases the potential energy to move the position of the connecting plate 402 upward, allowing the baffle 401 to gradually move toward the lower feed port 400. When the connecting plate 402 and the baffle 401 move upward, the sliding rod 405 can be moved along the sliding rail 404 through the connecting rod a406. When the connecting rod b407 completely leaves the sliding rod 405, the baffle 401 is completely matched with the feed port 400, and the feed port 400 can be closed to prevent the plastic particles from falling. When the connecting rod b407 completely leaves the sliding rod 405, the top rod 307 leaves the concave-convex plate 306 to avoid it. When the connecting rod b407 continues to move, the top rod 307 allows the reflux box 104 to continue to move the rotatable sub-screen plate 300, so as to achieve the purpose of closing the discharge port 400 before the sub-screen plate 300 and the sub-screen 105 rotate, blocking the falling of new particles and making the particles on the tilted surface of the sub-screen 105 slide into the reflux box 104, thereby ensuring that after the sub-screen 105 completes the rotation adjustment, the particles in the crushing bucket 101 will not continue to fall onto the screen, thereby avoiding new particles interfering with the screening effect during the screening process.

[0039] As a further aspect of the present invention, the reflux box 104 can reciprocate along a predetermined path when the crushing roller 102 rotates; The crushing roller 102 is connected with a gear b500, which is an incomplete gear. A rack a501 adapted to the gear b500 is slidably connected to one side of the crushing bucket 101, a spring d502 is connected between the rack a501 and the crushing bucket 101, a rack b503 is connected to the rack a501, a lead screw 504 is rotatably connected to the processing box 100, a gear c505 meshing with the rack b503 is connected to the lead screw 504, and a connecting rod c506 threadedly connected to the lead screw 504 is connected to the connecting rod b407; By setting the gear b500, when the motor 201 drives the crushing roller 102 to rotate, the gear b500 can rotate, and when the gear b500 rotates to a preset angle, it can mesh with the rack a501, and when the rack a501 moves upward, the lead screw 504 can rotate through the rack b503 and the gear c505, and then the connecting rod b407, the top rod 307 and the reflux box 104 can move. Since the gear b500 is an incomplete gear, it can be separated from the rack a501 when the gear b500 rotates one circle, and the spring d502 releases the potential energy to reset the rack a501 downward, and at the same time drives the rack b503 to descend, and the gear c505 rotates in the opposite direction under the action of the rack b503, so that the lead screw 504 rotates in the opposite direction, and then the connecting rod b407 moves in the opposite direction. The movement of the connecting rod b407 drives the top rod 307 and the reflux box 104 to move in the return direction, realizing the reciprocating movement of the reflux box 104. During the next round of meshing of gear b500, rack a501 is driven to move upward again, and the above process is repeated. Since gear b500 is an incomplete gear, rack a501 can rely on the reset force of spring d502 to complete its own reset when it is in the non-tooth area of ​​gear b500, thereby ensuring that the reflux box 104 moves back and forth regularly within the predetermined path. This design allows the movement of the reflux box 104 to be coordinated with the rotation of the crushing roller 102, ensuring that the screening and reflux processes are carried out according to the set rhythm, thereby improving the stability and efficiency of the overall screening and recovery system.

[0040] As a further aspect of the present invention, the reflux component can transport particles when the reflux box 104 moves; The reflux component includes a conveying channel 600 connected to the crushing bucket 101, the bottom of the conveying channel 600 passes through the crushing bucket 101, the guide plate 204 and the fixed plate 203 and extends into the reflux box 104, a baffle 601 is connected to the processing box 100, a dragon shaft 602 extending into the conveying channel 600 is rotatably connected to the baffle 601, a gear d603 is connected to the dragon shaft 602, a rack c604 meshing with the gear d603 is connected to one side of the reflux box 104, and a ratchet mechanism 605 is provided between the gear d603 and the dragon shaft 602; By setting the rack c604 to be fixedly connected with the reflux box 104, when the reflux box 104 moves, the rack c604 meshes with the gear d603, driving the gear d603 to rotate, and at the same time, the dragon shaft 602 is rotated unidirectionally through the ratchet mechanism 605, so that the particles in the conveying channel 600 are pushed into the reflux box 104 along the spiral direction. Due to the existence of the ratchet mechanism 605, the dragon shaft 602 rotates only when the reflux box 104 moves in a specific direction, and does not rotate in the opposite direction when the reflux box 104 returns, ensuring the stability and directionality of particle conveying. At the same time, the setting of the baffle 601 can not only support the dragon shaft 602, but also prevent particles from overflowing or entering inappropriate areas, thereby improving the overall operation stability and screening recovery efficiency of the equipment.

[0041] A solid waste treatment method is applicable to any of the above solid waste treatment equipment, and the specific steps are as follows: Step 1: The operator puts the plastic waste into the crushing bucket 101, and the driving unit drives the two crushing rollers 102 to rotate relative to each other to perform preliminary crushing on the plastic waste, so that the plastic waste is crushed into plastic particles that are easy to melt; Step 2: During the crushing process, the formed plastic particles fall from the bottom of the crushing bucket 101 onto the sub-screen 105. Smaller particles can smoothly pass through the sub-screen 105 and enter the recovery box 103, while larger plastic particles are blocked on the sub-screen 105 and wait for further processing; Step 3: When the driving unit drives the crushing roller 102 to rotate, the reflux box 104 moves to the right along a predetermined path. During this process, the sorting component drives the sub-screen 105 to shake up and down, so that the particles on the sub-screen 105 are constantly shaken to improve the screening efficiency and enable more small particles to pass through the sub-screen 105 and enter the recovery box 103; Step 4: When the reflux box 104 moves to the preset position, the discharge port 400 at the bottom of the crushing bucket 101 is closed, and the sorting component tilts the left end of the sub-screen 105 toward the reflux box 104, so that the larger particles on the sub-screen 105 can slide smoothly into the reflux box 104; Step 5: The reflux box 104 returns to the left along the predetermined path. At this time, the reflux component is activated to transport the insufficiently crushed particles in the reflux box 104 back to the crushing bucket 101 for secondary crushing to improve the crushing efficiency and ensure that the particle size meets the requirements; Step 6: When the reflux box 104 returns to the initial position, the sorting component returns to its original position, so that the sub-screen 105 returns to a horizontal state, and at the same time, the discharge port 400 at the bottom of the crushing bucket 101 is reopened to prepare for the next round of crushing and screening.

[0042] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A solid waste treatment device, characterized in that: include: Processing box; A crushing bucket is arranged in the processing box, and a crushing roller is arranged in the crushing bucket; The recovery box and the reflux box are arranged in the processing box body, and are located at the bottom of the crushing bucket. The reflux box is located at the top of the recovery box, and the reflux box is smaller than the recovery box. A sub-screen is arranged between the crushing bucket and the reflux box, and the sub-screen is staggered with the reflux box; A driving part provided between the processing box and the crushing rollers, used for rotating the two crushing rollers so that the two crushing rollers rotate relative to each other; A sorting component disposed between the reflux box and the sub-screen, used for shaking the sub-screen up and down and rotating the sub-screen; The reflux component disposed between the reflux box and the crushing bucket is used to transport the plastic particles in the reflux box into the crushing bucket.

2. A solid waste treatment device according to claim 1, characterized in that: The driving part includes a crushing chamber opened in the crushing bucket, the crushing roller is rotatably connected to the crushing chamber, one end of the crushing roller rotates through the crushing chamber and the crushing bucket to extend to one side of the processing box, the processing box is connected to a motor, the driving shaft of the motor is connected to one of the crushing rollers, and the two crushing rollers are respectively connected to mutually meshing gears a.

3. A solid waste treatment device according to claim 2, characterized in that: A fixing plate 203 is connected inside the processing box 100 , and a guide plate 204 is connected to the top of the fixing plate 203 . The guide plate 204 has a triangular cross section and is located at one end of the sub-screen 105 , corresponding to the reflux box 104 .

4. A solid waste treatment device according to claim 3, characterized in that: The sorting component includes a sub-screen plate arranged in the processing box body, the sub-screen mesh is arranged on the sub-screen plate, one side of the interior of the processing box body is rotatably connected to a connecting rod slidably connected to the sub-screen plate, the bottom of the sub-screen plate is also slidably connected to a guide rail connected to the reflux box, and a spring a is connected between the guide rail, the connecting rod and the sub-screen plate.

5. The solid waste treatment equipment according to claim 4, characterized in that: The sorting component is capable of shaking the sub-screen when the reflux box moves; The sorting component also includes a concave-convex plate connected to the bottom of the sub-screening plate, one side of the reflux box is connected to a top rod that contacts the concave surface of the concave-convex plate, the guide rail includes a straight section, and the reflux box is connected to a guide rod that is slidably connected to the straight section of the guide rail.

6. The solid waste treatment equipment according to claim 5, characterized in that: The sorting component is capable of rotating the sub-screen when moving the reflux box to a preset position; The sorting component also includes an extension plate slidably connected to one end of the sub-screen plate and in contact with the fixed plate, a spring b is connected between the extension plate and the sub-screen plate, an inclined opening is provided at the bottom of the fixed plate, and the guide rail also includes an inclined section, which is connected to the straight section.

7. The solid waste treatment equipment according to claim 5, characterized in that: The sorting component can close the bottom of the crushing bucket when the reflux box is moved to a preset position, so that the particles on the surface of the sub-screen slide into the reflux box; The sorting component also includes a feed opening opened at the bottom of the crushing bucket and connected to the crushing chamber, a plurality of baffles are slidably connected in the feed opening, a connecting plate is commonly connected to one side of the plurality of baffles, the connecting plate is slidably connected to one side of the crushing bucket, and a spring c is connected between the connecting plate and the crushing bucket, a slide rail is connected to one side of the crushing bucket, a slide rod is slidably connected to the slide rail, a connecting rod a rotatably connected to the sliding rod and connected to the connecting plate, a connecting rod b is connected to one side of the top rod, and the connecting rod b contacts the sliding rod.

8. The solid waste treatment equipment according to claim 7, characterized in that: The return box can reciprocate along a predetermined path when the crushing roller rotates; The crushing roller is connected to a gear b, which is an incomplete gear. A rack a matched with the gear b is slidably connected to one side of the crushing bucket. A spring d is connected between the rack a and the crushing bucket. The rack a is connected to the rack b. A lead screw is rotatably connected to the processing box, and a gear c meshing with the rack b is connected to the lead screw. The connecting rod b is connected to a connecting rod c threadedly connected to the lead screw.

9. The solid waste treatment equipment according to claim 3, characterized in that: The reflux component is capable of conveying particles when the reflux box moves; The reflux component includes a conveying channel connected to the crushing bucket, the bottom of the conveying channel passes through the crushing bucket, the guide plate and the fixed plate and extends into the reflux box, the processing box is connected with a baffle, a dragon shaft extending into the conveying channel is rotatably connected to the baffle, a gear d is connected to the dragon shaft, a rack c meshing with the gear d is connected to one side of the reflux box, and a ratchet mechanism is provided between the gear d and the dragon shaft.

10. A method for treating solid waste, applicable to a solid waste treatment device according to any one of claims 1 to 9, characterized in that: The specific steps are as follows: Step 1: The operator puts the plastic waste into the crushing bucket, and the driving unit drives the two crushing rollers to rotate relative to each other to perform preliminary crushing on the plastic waste, so that it is crushed into plastic particles that are easy to melt; Step 2: During the crushing process, the formed plastic particles fall from the bottom of the crushing bucket onto the sub-screen. Smaller particles can pass through the sub-screen smoothly and enter the recycling box, while larger plastic particles are blocked on the sub-screen and wait for further processing; Step 3: When the driving unit drives the crushing roller to rotate, the reflux box moves to the right along the predetermined path. During this process, the sorting component drives the sub-screen to shake up and down, so that the particles on the sub-screen are constantly shaken to improve the screening efficiency and enable more small particles to pass through the sub-screen into the recovery box; Step 4: When the reflux box moves to the preset position, the discharge port at the bottom of the crushing bucket is closed, and the sorting component tilts the left end of the sub-screen toward the reflux box, so that the larger particles on the sub-screen can slide smoothly into the reflux box; Step 5: The reflux box returns to the left along the predetermined path. At this time, the reflux component starts to transport the insufficiently crushed particles in the reflux box back to the crushing bucket for secondary crushing, thereby improving the crushing efficiency and ensuring that the particle size meets the requirements; Step 6: When the reflux box returns to its initial position, the sorting components return to their original positions, making the screen return to a horizontal state. At the same time, the discharge port at the bottom of the crushing bucket is reopened, preparing for the next round of crushing and screening.

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