A waste plastic recycling and crushing recovery device

Abstract

This invention provides a waste plastic recycling and crushing device, belonging to the field of waste plastic recycling technology. It includes a feeding and conveying mechanism, a plastic washing tank, a transfer feeding mechanism, and a crushing mechanism arranged in parallel. The feeding and conveying mechanism transports waste plastic to the plastic washing tank, which is equipped with multiple sets of washing components for washing the waste plastic. The transfer feeding mechanism transports the washed waste plastic to the crushing mechanism, which crushes and recycles the waste plastic. This invention enhances the washing effect through the dynamic telescopic stirring function of the telescopic bracket in the washing components, and can actively drive the material, solving the problems of incomplete stirring and non-automatic feeding in traditional washing methods.

Description

Technical Field

[0001] This invention belongs to the field of waste plastic recycling technology, specifically a waste plastic recycling and crushing device. Background Technology

[0002] With the increasing consumption of plastic products, the amount of waste plastic is also constantly increasing. Traditional disposal methods mainly involve incineration and landfill. These methods not only consume a large amount of non-renewable resources, but also release harmful gases and pollute soil and groundwater, causing serious ecological damage and resource waste. In the process of plastic recycling, waste plastics need to go through key steps such as crushing, washing, and secondary melting. Among these, the washing process is a prerequisite for ensuring the quality of subsequent crushing and melting.

[0003] However, existing recycling systems generally suffer from poor coordination between washing and crushing equipment, resulting in long and inefficient material transport paths. The mixing mechanism in the washing stage lacks automatic feeding functionality, requiring frequent manual intervention from operators to push and tumble the plastics, significantly increasing labor intensity and impacting continuous operation. Furthermore, when changing the clean water in the washing tank, accumulated sludge is difficult to remove efficiently, easily clogging drainage channels and reducing washing effectiveness; long-term accumulation can also shorten equipment lifespan. These deficiencies severely hinder the automation and efficiency of waste plastic recycling processes. Summary of the Invention

[0004] The purpose of this application is to provide a waste plastic recycling and crushing device that solves the problems of incomplete washing and mixing and non-automatic feeding in traditional methods.

[0005] The technical solution adopted by this invention to solve its technical problem is: a waste plastic recycling and crushing device, comprising a feeding and conveying mechanism, a plastic washing tank, a transfer feeding mechanism, and a crushing mechanism arranged in parallel; the feeding and conveying mechanism is used to transport waste plastic to the plastic washing tank, the plastic washing tank is equipped with multiple sets of washing components for washing the waste plastic, the transfer feeding mechanism is used to transport the washed waste plastic to the crushing mechanism, and the crushing mechanism is used to crush and recycle the waste plastic; The cleaning assembly includes bearing seats fixedly installed on both sides of the upper end of the plastic cleaning tank. A cleaning mechanism is rotatably arranged between the two sets of bearing seats. The cleaning mechanism includes a connecting main shaft, with connecting plates at both ends of the connecting main shaft. A connecting support shaft rotatably connected to the bearing seat is fixedly arranged at the center of the end of the connecting plate away from the connecting main shaft. Multiple sets of material-driving frames arranged in a circular array are fixedly arranged between the two sets of connecting plates. A side connecting plate is fixedly arranged on the side of the material-driving frame away from the connecting main shaft. A telescopic bracket is slidably arranged through the side connecting plate. Guide rods are fixedly arranged at both ends of the telescopic bracket. A guide groove is provided on the connecting plate for the guide rods to pass through. A guide plate for driving the telescopic bracket to move axially is fixedly arranged at the upper end of the plastic cleaning tank. A cleaning motor for driving the cleaning mechanism to rotate is fixedly arranged on the plastic cleaning tank. The multiple sets of cleaning mechanisms are connected by a drive mechanism.

[0006] Preferably, the feeding and conveying mechanism includes a feeding frame, a conveying support is fixedly inclined at the upper end of the feeding frame, a feeding hopper is fixedly installed at the lower end of the conveying support, conveying rollers are rotatably installed at both ends of the conveying support, the two sets of conveying rollers are connected by a conveyor belt, a plurality of conveying baffles for pushing waste plastics are fixedly installed on the conveyor belt, a conveying bracket is fixedly installed at the upper end of the conveying support, and a conveying motor for driving the conveying rollers to rotate is fixedly installed on the conveying bracket; The structure of the transfer and feeding mechanism is the same as that of the feeding and conveying mechanism, but the feeding hopper is removed.

[0007] Preferably, the crushing mechanism includes a crushing frame, a crushing box is fixedly installed at the upper end of the crushing frame, multiple sets of crushing rollers are installed inside the crushing box, the crushing rollers are rotatably mounted on the crushing box via crushing shafts, a gearbox is fixedly installed on the outer wall of the crushing box and is drively connected to the multiple sets of crushing shafts, a crushing motor for driving the gearbox is fixedly installed on the crushing frame, and a feed hopper for feeding waste plastic is installed at the upper end of the crushing box.

[0008] Preferably, the cleaning mechanism on the side closer to the transfer feeding mechanism rotates in the opposite direction to the other cleaning mechanisms. The cleaning mechanism on the side closer to the transfer feeding mechanism is used to feed the cleaned waste plastics onto the transfer feeding mechanism, while the other cleaning mechanisms are used to turn and clean the waste plastics and drive the plastics toward the transfer feeding mechanism.

[0009] Preferably, the drive mechanism includes a drive support disposed between two adjacent sets of cleaning mechanisms on the side near the transfer and loading mechanism. Two sets of connecting shafts are rotatably mounted on the drive support. Meshing transmission gears are fixedly disposed on both sets of connecting shafts. The connecting shafts are connected to the connecting support shafts on the adjacent cleaning mechanisms via a three-way belt drive. The adjacent cleaning mechanisms away from the transfer and loading mechanism are connected to each other via a two-way belt drive.

[0010] Preferably, the guide plate has a through hole at its center for connecting the support shaft to pass through, and a guide drive groove is provided on the end face of the guide plate near the cleaning mechanism for driving the guide connecting rod to slide back and forth along the guide groove. A plate support is fixedly provided on the side of the guide plate away from the cleaning mechanism, and the guide plate is fixedly installed on the plastic cleaning tank through the plate support. When the telescopic bracket rotates into the plastic cleaning tank, the guide connecting rod slides in the guide drive groove, thereby driving the drive mechanism to slide outward, so that the drive mechanism extends to stir and agitate the waste plastic, thereby realizing the cleaning and feeding of the waste plastic.

[0011] Preferably, the plastic cleaning pool includes a cleaning pool support, a cleaning box is fixedly installed at the upper end of the cleaning pool support, a drain hopper is installed at the lower part of the cleaning box, a sludge discharge box is installed at the bottom of the drain hopper, a sludge discharge mechanism for discharging cleaning sludge is installed in the sludge discharge box, and a partition mechanism is installed between the drain hopper and the cleaning box.

[0012] Preferably, the sewage discharge mechanism includes a sewage discharge shaft rotatably installed in a sewage discharge box, a sewage discharge spiral blade for sewage discharge is provided on the outer periphery of the sewage discharge shaft, and a sewage discharge motor for driving the sewage discharge shaft to rotate is fixedly provided on the outer periphery of the cleaning box.

[0013] Preferably, the partition mechanism includes a fixed partition plate fixedly installed at the bottom of the cleaning tank, a through hole for drainage in the middle of the fixed partition plate, two sets of movable partition plates for blocking the through hole slidably installed at the lower end of the fixed partition plate, and a guide frame for guiding and limiting the sliding of the movable partition plates at the lower end of the fixed partition plate. A linkage mechanism is installed inside the drainage hopper, and the linkage mechanism is drivenly connected to the sewage discharge shaft and used to drive the two sets of movable partition plates to slide synchronously.

[0014] Preferably, the linkage mechanism includes a bidirectional lead screw shaft rotatably installed in the drainage hopper. The bidirectional lead screw shaft is connected to the sewage shaft via a belt drive. The bidirectional lead screw shaft is provided with external threads in opposite directions. Two sets of lead screw sliders are threadedly connected to the bidirectional lead screw shaft. Linkage rods are rotatably connected to both sides of the lead screw sliders. The end of the linkage rod away from the lead screw slider is rotatably connected to the sewage spiral blade. When the water in the plastic cleaning tank needs to be replaced, the sewage motor starts and drives the sewage shaft to rotate. Through the belt drive, the double-sided lead screw shaft rotates. Using the lead screw transmission principle, the two sets of lead screw sliders slide synchronously in opposite directions. The lead screw sliders drive the two sets of sewage discharge spiral blades to slide synchronously outward through the linkage, so that the through hole opens, allowing the water and sludge in the cleaning tank to flow into the sewage tank. Driven by the sewage discharge spiral blades, the sludge is transported to the outlet for discharge.

[0015] The beneficial effects of this invention are as follows: Through modular layout and the coordinated operation of various mechanisms, continuous automated processing of waste plastics from feeding, washing, transfer, and crushing is achieved. The dynamic telescopic stirring function of the telescopic bracket in the washing component enhances the washing effect and can actively drive the material, solving the problems of incomplete stirring and non-automatic feeding in traditional washing methods; the overall solution improves the efficiency and automation level of waste plastic recycling. Attached Figure Description

[0016] The invention will now be further described with reference to the accompanying drawings.

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the feeding and conveying mechanism of the present invention; Figure 3 This is a schematic diagram of the crushing mechanism of the present invention; Figure 4 This is a schematic diagram of the structure of the plastic cleaning tank of the present invention; Figure 5 This is a schematic diagram of the main structure of the plastic cleaning tank of the present invention; Figure 6 This is the present invention. Figure 5 Schematic diagram of the cross-sectional structure along the AA direction; Figure 7 This is a schematic diagram of the linkage mechanism of the present invention; Figure 8 This is a schematic diagram of the cleaning mechanism of the present invention; Figure 9 This is a schematic diagram of the assembly structure of the cleaning mechanism and the guide plate of the present invention; Figure 10 This is a three-dimensional structural schematic diagram of the guide disk of the present invention; Figure 11 This is an isometric structural diagram of the guide disk of the present invention; Figure 12 This is a schematic diagram of the drive mechanism of the present invention.

[0018] In the diagram: 100, feeding and conveying mechanism; 200, plastic washing tank; 300, washing assembly; 400, transfer feeding mechanism; 500, crushing mechanism; 11, feeding frame; 12, conveyor support; 13, feeding hopper; 14, conveyor roller; 15, conveyor belt; 16, conveyor baffle; 17, conveyor support; 18, conveyor motor; 21, washing tank support; 22, washing box; 221, drainage hopper; 222, sewage discharge box; 223, fixed partition; 224, guide frame; 225, movable partition; 23, sewage discharge motor; 24, sewage discharge shaft; 25, sewage discharge spiral blade; 26, linkage mechanism; 261, double-acting lead screw shaft; 262, belt drive one; 263, lead screw slider; 264. 31. Linkage rod; 31. Cleaning mechanism; 311. Connecting main shaft; 312. Connecting disc; 3121. Guide groove; 313. Material feeder; 314. Side connecting plate; 315. Telescopic bracket; 316. Guide linkage; 317. Connecting support shaft; 32. Bearing seat; 33. Guide disc; 331. Disc body through hole; 332. Guide drive groove; 333. Disc body support; 34. Cleaning motor; 35. Drive mechanism; 351. Belt drive two; 352. Belt drive three; 353. Drive support; 354. Connecting shaft; 355. Transmission gear; 51. Crusher frame; 52. Crusher box; 53. Gearbox; 54. Crushing shaft; 55. Crushing roller; 56. Feed hopper; 57. Crushing motor. Detailed Implementation

[0019] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0020] Please see Figures 1-12 As shown in the figure, this embodiment of the invention provides a waste plastic recycling and crushing device, including a feeding and conveying mechanism 100, a plastic washing tank 200, a transfer feeding mechanism 400, and a crushing mechanism 500 arranged side by side. The feeding and conveying mechanism 100 is used to transport waste plastic into the plastic washing tank 200. The plastic washing tank 200 is equipped with multiple sets of washing components 300 for washing the waste plastic. The transfer feeding mechanism 400 is used to transport the washed waste plastic into the crushing mechanism 500, and the crushing mechanism 500 is used to crush and recycle the waste plastic.

[0021] The cleaning assembly 300 includes bearing seats 32 fixedly installed on both sides of the upper end of the plastic cleaning tank 200. A cleaning mechanism 31 is rotatably arranged between the two sets of bearing seats 32. The cleaning mechanism 31 includes a connecting main shaft 311. Both ends of the connecting main shaft 311 are provided with connecting plates 312. A connecting support shaft 317 rotatably connected to the bearing seat 32 is fixedly arranged at the center of the end of the connecting plate 312 away from the connecting main shaft 311. Multiple sets of material feeders 313 are fixedly arranged in a circular array between the two sets of connecting plates 312. The side of the material feeder 313 away from the connecting main shaft 311 A side connecting plate 314 is fixedly installed, and a telescopic bracket 315 is slidably installed through the side connecting plate 314. Guide rods 316 are fixedly installed at both ends of the telescopic bracket 315. A guide groove 3121 for the guide rods 316 to pass through is provided on the connecting plate 312. A guide plate 33 for driving the telescopic bracket 315 to move axially is fixedly installed at the upper end of the plastic cleaning tank 200. A cleaning motor 34 for driving the cleaning mechanism 31 to rotate is fixedly installed on the plastic cleaning tank 200. Multiple sets of cleaning mechanisms 31 are connected by a drive mechanism 35.

[0022] The waste plastic recycling and crushing device in this embodiment achieves continuous automated processing of waste plastics from feeding, washing, transfer, and crushing through modular layout and coordinated operation of various mechanisms. The dynamic telescopic stirring function of the telescopic bracket 315 in the washing component 300 enhances the washing effect and actively drives the material, solving the problems of incomplete washing and stirring and non-automatic feeding in traditional methods. The overall solution improves the efficiency and automation level of waste plastic recycling and processing.

[0023] In some of the embodiments described above in this application, a feeding conveyor mechanism and a transfer feeding mechanism are proposed to realize the automated conveying of waste plastics. However, in practical applications, how to specifically construct a mechanical structure that can adapt to the form of waste plastics and achieve stable and continuous conveying, and how to simplify the overall assembly and maintenance of the device through a unified modular design are the key issues that need to be solved in the process of realizing efficient automated operation of the device.

[0024] For this, please refer to Figures 1-2 As shown, the feeding and conveying mechanism 100 includes a feeding frame 11. A conveying support 12 is fixedly and inclinedly arranged at the upper end of the feeding frame 11. A feeding hopper 13 is fixedly arranged at the lower end of the conveying support 12. Conveying rollers 14 are rotatably arranged at both ends of the conveying support 12. The two sets of conveying rollers 14 are connected by a conveyor belt 15. Several conveying baffles 16 for pushing waste plastics are fixedly arranged on the conveyor belt 15. A conveying bracket 17 is fixedly arranged at the upper end of the conveying support 12. A conveying motor 18 for driving the conveying rollers 14 to rotate is fixedly installed on the conveying bracket 17. The structure of the transfer feeding mechanism 400 is the same as that of the feeding and conveying mechanism 100, but the feeding hopper 13 is removed.

[0025] Through the above technical solutions, this application constructs a standardized and modular waste plastic conveying system. The coordinated action of the feeding frame 11, conveyor support 12, conveyor roller 14, conveyor belt 15, conveyor baffle 16, conveyor bracket 17, and conveyor motor 18 enables waste plastic to be stably and continuously conveyed from the initial input point to the plastic washing tank 200. In particular, the several conveyor baffles 16 fixedly installed on the conveyor belt 15 effectively solve the problems of slippage, falling back, or accumulation that may occur during inclined conveying of waste plastic due to its irregular shape and easy slippage, ensuring reliable material delivery. The setting of the feeding hopper 13 further optimizes the reception and guidance of the initial material and avoids scattering. Furthermore, the transfer feeding mechanism 400 reuses the structure of the feeding conveyor mechanism 100, only removing the feeding hopper 13, thus achieving standardization and modularization of the internal structure of the device. This design not only significantly reduces manufacturing and maintenance costs and simplifies spare parts management, but also ensures that the cleaned waste plastics can be smoothly and efficiently transported from the transfer feeding mechanism 400 to the crushing mechanism 500. It effectively solves the problem of poor material connection between different processing steps, thereby improving the automation level and operating efficiency of the entire waste plastic recycling and crushing device.

[0026] In some of the solutions mentioned above in this application, a crushing mechanism is proposed for crushing and recycling waste plastics. However, in practical applications, the key to improving the overall recycling efficiency is how to efficiently and stably feed the cleaned plastics into the crusher box and achieve coordinated and efficient crushing of multiple crushing rollers. Existing solutions lack targeted optimization of the internal structure and feeding method of the crushing mechanism, which leads to problems such as blockage or uneven crushing of plastics during the crushing process.

[0027] For this, please refer to Figures 1-3 As shown, the crushing mechanism 500 includes a crusher frame 51, a crusher box 52 is fixedly installed on the upper end of the crusher frame 51, a plurality of crushing rollers 55 are installed inside the crusher box 52, the crushing rollers 55 are rotatably mounted on the crusher box 52 via crushing shafts 54, a gearbox 53 is fixedly installed on the outer wall of the crusher box 52 and is connected to the plurality of crushing shafts 54 for transmission, a crushing motor 57 for driving the gearbox 53 to rotate is fixedly installed on the crusher frame 51, and a feed hopper 56 for feeding waste plastic is provided at the upper end of the crusher box 52.

[0028] Through the above technical solution, the feed hopper 56 is located at the upper end of the crusher box 52 and cooperates with the transfer feeding mechanism 400 to directly and smoothly guide the cleaned waste plastic into the crusher box 52, effectively avoiding material accumulation or blockage in the feeding stage and ensuring the continuity and stability of the crushing process. Multiple sets of crushing rollers 55 are rotatably installed in the crusher box 52 via crushing shaft 54 ​​and are connected by crushing motor 57 through gearbox 53. This design allows multiple sets of crushing rollers 55 to work together to achieve multi-point, multi-stage shearing, tearing, or extrusion of waste plastic, significantly improving crushing efficiency and crushing uniformity. The introduction of gearbox 53 not only provides powerful driving force but also precisely controls the rotation speed and relative movement of each crushing roller 55, effectively avoiding material jamming and entanglement during the crushing process and ensuring smooth crushing operation. Meanwhile, the crusher frame 51, as a robust support structure, bears all components such as the crusher housing 52, crushing motor 57, and gearbox 53, effectively absorbing and dispersing the vibrations and impacts generated during the crushing process, ensuring the long-term stable operation and reliability of the entire crushing mechanism 500. In summary, the optimized internal structure and feeding method design of this crushing mechanism 500 effectively solve the problems of clogging, uneven crushing, and low efficiency that easily occur in the plastic crushing process in existing technologies, thereby improving the overall processing capacity and recycling efficiency of waste plastic recycling and crushing devices.

[0029] In some of the embodiments described above in this application, multiple sets of cleaning mechanisms are proposed to clean waste plastics. However, in actual operation, if all cleaning mechanisms rotate in the same direction, waste plastics may accumulate in the cleaning tank or fail to move effectively to the discharge end, resulting in poor connection between the cleaning and feeding processes and making it difficult to achieve automated and continuous material conveying.

[0030] For this, please refer to Figures 4-6 As shown, the cleaning mechanism 31 on the side closer to the transfer feeding mechanism 400 rotates in the opposite direction to the rotation direction of the other cleaning mechanisms 31. The cleaning mechanism 31 on the side closer to the transfer feeding mechanism 400 is used to feed the cleaned waste plastics into the transfer feeding mechanism 400. The other cleaning mechanisms 31 are used to turn the waste plastics over for cleaning and to drive the plastics toward the transfer feeding mechanism 400.

[0031] Specifically, the washing mechanism 31 located near the transfer and feeding mechanism 400 is designed to feed the washed waste plastics into the transfer and feeding mechanism 400. When the washing mechanism 31 rotates in the reverse direction, its feeder 313 generates an upward lifting force or a forward pushing force, effectively moving and conveying the waste plastics from the bottom of the washing tank 200 or the water to the inlet of the transfer and feeding mechanism 400. This can be understood as the washing mechanism 31 acting as a discharge aid or lifting mechanism, ensuring that the washed material can smoothly leave the washing tank 200.

[0032] In addition, the remaining cleaning mechanisms 31 are mainly used to tumble and clean the waste plastics and to drive the plastics toward the transfer and feeding mechanism 400. These cleaning mechanisms 31 rotate in the same direction. During the rotation of their feeding racks 313, on the one hand, they can fully agitate the water flow in the cleaning tank 200, so that the waste plastics are fully tumbled and soaked in the water, thereby achieving a thorough cleaning effect; on the other hand, the thrust generated by their rotation can gradually gather and move the cleaned waste plastics along the length of the cleaning tank 200 toward the side closer to the transfer and feeding mechanism 400, preparing for the final discharge.

[0033] Through the above technical solution, this application achieves synergistic optimization of cleaning and conveying functions. While thoroughly turning and cleaning the waste plastics, the remaining cleaning mechanisms 31 generate a continuous thrust, effectively driving and collecting the material to the discharge end of the cleaning tank 200. The cleaning mechanism 31 near the transfer feeding mechanism 400, through its reverse rotation, can precisely lift and feed the collected waste plastics into the transfer feeding mechanism 400, thus solving the problem of waste plastics accumulating in the cleaning tank 200 or failing to move effectively to the discharge end. This differentiated rotation direction design effectively avoids material retention during the cleaning process, ensuring that the cleaned waste plastics can be continuously and automatically conveyed to the subsequent crushing mechanism 500, greatly improving the overall operating efficiency and automation level of the waste plastic recycling and crushing device, and achieving seamless connection between the cleaning and feeding processes.

[0034] In some of the embodiments described above in this application, a cleaning mechanism is proposed to clean and tumble waste plastics. However, in the process of multiple cleaning mechanisms working together to achieve continuous tumbling, cleaning and conveying of plastics to the transfer and feeding mechanism, the coordination of rotation direction and power transmission method between the cleaning mechanisms lacks specific structural support, making it difficult to accurately control the movement path and cleaning efficiency of the plastics, and failing to effectively achieve automated connection between cleaning and conveying.

[0035] For this, please refer to Figures 1-12As shown, the drive mechanism 35 includes a drive support 353 disposed between two adjacent sets of cleaning mechanisms 31 on the side near the transfer and loading mechanism 400. Two sets of connecting shafts 354 are rotatably mounted on the drive support 353. Both sets of connecting shafts 354 are fixedly provided with meshing transmission gears 355. The connecting shafts 354 are connected to the connecting support shafts 317 on the adjacent cleaning mechanism 31 by a belt drive 352. The adjacent cleaning mechanisms 31 away from the transfer and loading mechanism 400 are connected by a belt drive 351.

[0036] Through the above technical solution, this application constructs a precise power distribution and transmission system, effectively solving the problems of coordination of rotation directions and lack of specific structural support for power transmission among multiple sets of cleaning mechanisms 31 when they work together. Specifically, by setting a drive support 353 between two adjacent sets of cleaning mechanisms 31 on the side near the transfer and feeding mechanism 400, and rotatably mounting two sets of connecting shafts 354 on them, with meshing transmission gears 355 fixedly mounted on the connecting shafts 354, precise control of the rotation direction of adjacent cleaning mechanisms 31 is achieved. This meshing transmission gear 355 design can forcibly change the rotation direction of the cleaning mechanism 31 on the side near the transfer and feeding mechanism 400, making it opposite to the rotation direction of the other cleaning mechanisms 31, thereby ensuring that the cleaning mechanism 31 can effectively directionally feed the cleaned waste plastic into the transfer and feeding mechanism 400, solving the problem that the plastic cannot automatically and efficiently enter the next processing stage after cleaning. Meanwhile, the connecting shaft 354 is connected to the connecting support shaft 317 on the adjacent cleaning mechanism 31 via belt drive 352, ensuring that power can be transmitted smoothly and reliably to the cleaning mechanism 31, guaranteeing the rotational stability of the cleaning mechanism 31 during the stirring and turning of waste plastics. Furthermore, adjacent cleaning mechanisms 31 located away from the transfer and feeding mechanism 400 are connected via belt drive 351, enabling these cleaning mechanisms 31 to work collaboratively, continuously turning and cleaning the waste plastics, and gradually driving them towards the area closer to the transfer and feeding mechanism 400. In summary, this drive mechanism 35, through the forced constraint of the mechanical structure and the segmented transmission layout, not only solves the problem of power distribution and directional coordination when multiple sets of cleaning mechanisms 31 work together, but also achieves automated flow of waste plastics from cleaning to conveying by precisely controlling the rotation of each cleaning mechanism 31. This significantly improves the operational reliability, cleaning efficiency, and overall automation level of the device, effectively avoiding manual intervention and reducing labor intensity.

[0037] In some of the embodiments described above in this application, a cleaning mechanism is proposed for cleaning waste plastics. However, during the cleaning process, how to achieve effective stirring, agitation and automatic feeding of the plastics by the cleaning mechanism to ensure cleaning efficiency and orderly conveying of the plastics is a key issue that needs further optimization in the prior art.

[0038] For this, please refer to Figures 8-11 As shown, the center of the guide plate 33 is provided with a through hole 331 for the connecting support shaft 317 to pass through. The end face of the guide plate 33 near the cleaning mechanism 31 is provided with a guide drive groove 332 for driving the guide connecting rod 316 to slide back and forth along the guide groove 3121. The side of the guide plate 33 away from the cleaning mechanism 31 is fixedly provided with a plate support 333. The guide plate 33 is fixedly installed on the plastic cleaning tank 200 through the plate support 333. When the telescopic bracket 315 rotates into the plastic cleaning tank 200, the guide connecting rod 316 slides in the guide drive groove 332, thereby driving the drive mechanism 35 to slide outward, so that the drive mechanism 35 extends to stir and move the waste plastic, thereby realizing the cleaning and feeding of the waste plastic.

[0039] Through the above technical solution, this application effectively solves the problems of effective stirring, agitation, and automatic feeding of plastics by the cleaning mechanism. The guide plate 33 and its internal guide drive groove 332 are cleverly coordinated with the telescopic bracket 315 and guide connecting rod 316 on the cleaning mechanism 31, converting the rotational motion of the cleaning mechanism 31 into the axial reciprocating motion of the telescopic bracket 315. This linkage mechanism allows the cleaning mechanism 31 to dynamically extend and retract during rotation, thereby continuously and deeply stirring and agitating the waste plastics in the plastic cleaning tank 200, significantly enhancing the cleaning effect and improving the thoroughness of cleaning. At the same time, through the extension action of the telescopic bracket 315, the cleaned waste plastics can be effectively driven in a specific direction, realizing the automatic feeding of waste plastics, ensuring that the waste plastics can be efficiently and orderly transported to the subsequent transfer and feeding mechanism 400, thus solving the problem of poor connection between cleaning and conveying, and improving the automation level and processing efficiency of the entire waste plastic recycling and crushing device.

[0040] In some of the solutions mentioned above in this application, plastic cleaning tanks are proposed for cleaning waste plastics. However, during the cleaning process, a large amount of sludge and sewage will accumulate inside the cleaning tank. When the existing cleaning tank structure is replaced with clean water, it is often difficult to quickly and thoroughly clean the sludge at the bottom of the tank, which leads to sludge deposition affecting the efficiency of subsequent cleaning. Moreover, the manual cleaning process is cumbersome and lacks an effective automated sewage discharge and isolation control mechanism.

[0041] For this, please refer to Figures 4-7 As shown, the plastic cleaning pool 200 includes a cleaning pool support 21. A cleaning box 22 is fixedly installed at the upper end of the cleaning pool support 21. A drain hopper 221 is installed at the lower part of the cleaning box 22. A sludge discharge box 222 is installed at the bottom of the drain hopper 221. A sludge discharge mechanism for discharging cleaning sludge is installed inside the sludge discharge box 222. A partition mechanism is installed between the drain hopper 221 and the cleaning box 22.

[0042] Through the above technical solution, this application constructs a highly efficient and automated wastewater discharge system for the plastic washing tank 200. During normal washing operations, the partition mechanism is closed to ensure a stable water level in the washing tank 22, enabling the washing assembly 300 to effectively tumble and wash the waste plastics. When wastewater discharge or water replacement is required, the partition mechanism opens, and the wastewater and sludge in the washing tank 22 are quickly collected by gravity through the drain hopper 221 and flow into the wastewater discharge tank 222. Subsequently, the wastewater discharge mechanism is activated to forcibly discharge the accumulated sludge in the wastewater discharge tank 222, thereby avoiding long-term accumulation of sludge in the washing tank 22 and its impact on subsequent washing effects. This design significantly improves the cleaning efficiency and automation level of the waste plastic recycling and crushing device, reduces the tedium of manual cleaning, ensures the continuity and cleanliness of the washing process, and thus optimizes the entire waste plastic recycling and crushing process.

[0043] In some of the solutions mentioned above in this application, a sludge removal mechanism is proposed to clean the sludge in the cleaning tank. However, in the actual sludge removal process, if gravity settling or simple drainage is relied upon, it is often difficult to completely remove the sludge deposited at the bottom of the cleaning tank, resulting in sludge accumulation in the cleaning tank, which affects the subsequent cleaning efficiency and water quality.

[0044] For this, please refer to Figures 4-7 As shown, the sewage discharge mechanism includes a sewage discharge shaft 24 rotatably installed in a sewage discharge box 222. A sewage discharge spiral blade 25 for sewage discharge is provided on the outer periphery of the sewage discharge shaft 24. A sewage discharge motor 23 for driving the sewage discharge shaft 24 to rotate is fixedly provided on the outer periphery of the cleaning box 22.

[0045] Through the above technical solution, a discharge shaft 24 is installed inside the discharge tank 222, and a discharge spiral blade 25 is fixed on its outer periphery. Simultaneously, a discharge motor 23 drives the discharge shaft 24 to rotate. This application achieves active and forced removal of sludge from the bottom of the cleaning tank 22. When the discharge motor 23 starts, it drives the discharge shaft 24 to rotate, and the discharge spiral blade 25 rotates accordingly. Utilizing the thrust of the spiral surface, the sludge deposited at the bottom of the discharge tank 222 is continuously transported forward axially until it is discharged from the discharge tank 222. This mechanized discharge method effectively overcomes the shortcomings of traditional gravity sedimentation or simple drainage methods, which are difficult to thoroughly remove viscous sludge. It avoids sludge accumulation in the cleaning tank 22, significantly improving the cleanliness and cleaning efficiency of the cleaning water. Therefore, combined with the overall design of the plastic cleaning tank 200, this discharge mechanism ensures that waste plastics continuously receive clean water during the cleaning process, thereby improving the recycling quality of waste plastics and reducing the frequency and difficulty of equipment maintenance.

[0046] In some of the solutions mentioned above in this application, drainage and sewage discharge from the cleaning tank are proposed through drainage buckets and sewage tanks. However, in actual operation, the drainage outlet at the bottom of the cleaning tank is often easily blocked by sludge, and it is difficult to achieve precise control and quick sealing of the through holes by simply relying on gravity drainage. As a result, when changing the cleaning water, it is impossible to efficiently and thoroughly discharge the water and sludge in the cleaning tank, which affects the cleaning efficiency and the degree of automation of the equipment.

[0047] For this, please refer to Figures 4-7 As shown, the partition mechanism includes a fixed partition 223 fixedly installed at the bottom of the cleaning tank 22. The fixed partition 223 has a through hole for drainage in the middle. Two sets of movable partitions 225 for blocking the through hole are slidably installed at the lower end of the fixed partition 223. A guide frame 224 for guiding and limiting the sliding of the movable partitions 225 is provided at the lower end of the fixed partition 223. A linkage mechanism 26 is provided in the drainage hopper 221. The linkage mechanism 26 is connected to the sewage shaft 24 and is used to drive the two sets of movable partitions 225 to slide synchronously.

[0048] Through the above technical solution, this application ingeniously connects the partition mechanism with the sewage discharge shaft 24 of the sewage discharge mechanism, enabling automated and precise opening and closing control of the drain outlet at the bottom of the cleaning tank 22. When the cleaning water needs to be replaced, the sewage discharge motor 23 starts the sewage discharge shaft 24. The rotation of the sewage discharge shaft 24 precisely drives the two sets of movable partitions 225 to slide outward synchronously through the linkage mechanism 26, thereby quickly and thoroughly opening the through hole. This not only solves the problem of traditional drain outlets being easily blocked by sludge, but also avoids the tediousness and inconvenience of manual operation. At the same time, after the through hole is opened, the water and sludge in the cleaning tank 22 can quickly flow into the drainage hopper 221 and the sewage discharge tank 222, and be efficiently discharged under the drive of the sewage discharge spiral blade 25, significantly improving the drainage and sewage discharge efficiency and automation level of the cleaning tank. This linkage design ensures the coordinated operation of the drainage and sewage discharge processes, making the entire waste plastic recycling and crushing device run more smoothly, efficiently, and reliably.

[0049] In some of the solutions mentioned above in this application, a partition mechanism is proposed to block the through hole at the bottom of the cleaning tank to achieve drainage. However, in actual operation, how to achieve the linkage control of drainage and sewage discharge, and how to ensure that the opening of the through hole and sludge transportation can be completed efficiently and synchronously when changing the cleaning water, are problems that need to be solved in the prior art.

[0050] For this, please refer to Figures 4-7As shown, the linkage mechanism 26 includes a bidirectional lead screw shaft 261 rotatably installed inside the drainage hopper 221. The bidirectional lead screw shaft 261 is connected to the sewage discharge shaft 24 via a belt drive 262. The bidirectional lead screw shaft 261 is provided with external threads in opposite directions. Two sets of lead screw sliders 263 are threadedly connected to the bidirectional lead screw shaft 261. Both sides of the lead screw sliders 263 are rotatably connected to linkage rods 264. The end of the linkage rod 264 away from the lead screw sliders 263 is rotatably connected to the sewage discharge spiral blade 25. When it is necessary to adjust the screw screw shaft 261, the linkage mechanism 261 can be adjusted to adjust the screw screw shaft 261. When the water in the plastic cleaning tank 200 is replaced, the sewage discharge motor 23 starts and drives the sewage discharge shaft 24 to rotate. Through the belt drive 262, the bidirectional lead screw shaft 261 rotates. Using the lead screw transmission principle, the two sets of lead screw sliders 263 slide synchronously in opposite directions. The lead screw sliders 263 drive the two sets of sewage discharge spiral blades 25 to slide synchronously outward through the linkage rod 264, so that the through hole is opened, allowing the water and sludge in the cleaning tank 22 to flow into the sewage discharge tank 222. Under the drive of the sewage discharge spiral blades 25, the sludge is transported to the outlet for discharge.

[0051] Through the above technical solution, this application achieves mechanized synchronous control of drainage and sewage discharge, effectively solving the problems of inconvenience in manual operation and asynchronous drainage and sewage discharge. Specifically, when it is necessary to replace the water in the plastic cleaning tank 200, the start of the sewage discharge motor 23 not only drives the sewage discharge shaft 24 to clean the sludge, but also transmits power to the bidirectional lead screw shaft 261 through the belt drive 262. The external threads with opposite helical directions on the bidirectional lead screw shaft 261, in conjunction with the lead screw slider 263, can accurately convert the rotational motion into synchronous, opposite linear motion of the two sets of lead screw sliders 263. This design ensures that the two sets of sewage discharge spiral blades 25 can slide outward symmetrically and smoothly, thereby opening the through hole and avoiding jamming or damage caused by uneven force on one side. The linkage rod 264 directly transmits the displacement of the lead screw slider 263 to the sewage discharge spiral blades 25, ensuring that the sewage discharge spiral blades 25 are in the correct working position when the through hole is opened, realizing seamless connection between water discharge and sludge transportation. The water and sludge in the cleaning tank 22 flow into the sewage tank 222 under gravity, and are immediately captured by the sewage discharge spiral blades 25 and transported to the outlet. This greatly improves the cleaning efficiency when the cleaning tank 200 is replaced with clean water, ensures the cleanliness of the device during continuous operation, and thus improves the overall operating efficiency and automation level of the waste plastic recycling and crushing device.

[0052] The following example will provide a more detailed explanation of the above technical solution: A waste plastic recycling center needs to clean and crush large quantities of mixed waste plastics. Traditional methods face problems such as inconvenient feeding of waste plastics, low washing and mixing efficiency, and difficulty in cleaning sludge from the washing tanks. To solve these problems, the center introduced a waste plastic recycling and crushing device.

[0053] First, waste plastics are automatically fed through the feeding conveyor mechanism 100. Operators pour the waste plastics into the feeding hopper 13 of the feeding conveyor mechanism 100. A conveyor support 12 is inclinedly mounted on the feeding frame 11 of the feeding conveyor mechanism 100. A conveyor motor 18 drives the conveyor roller 14 to rotate, which in turn drives the conveyor belt 15. Conveyor baffles 16 fixedly mounted on the conveyor belt 15 push the waste plastics upwards along the conveyor support 12, automatically and continuously transporting the waste plastics into the plastic washing tank 200. This design avoids the tediousness of manual feeding and improves feeding efficiency.

[0054] After waste plastic enters the plastic washing tank 200, multiple sets of washing components 300 begin operation. A washing motor 34 drives the washing mechanism 31 to rotate. Each washing mechanism 31 has connecting discs 312 at both ends of its connecting shaft 311, and multiple sets of material-driving racks 313 arranged in a circular array are fixedly installed between the connecting discs 312. When the washing mechanism 31 rotates, the material-driving racks 313 perform initial agitation on the waste plastic. As the washing mechanism 31 rotates, the guide rod 316 slides within the guide drive groove 332, thereby driving the telescopic support 315 to move axially. When the telescopic support 315 rotates into the plastic washing tank 200, it extends outwards, performing deeper agitation and stirring of the waste plastic, ensuring thorough cleaning. This telescopic agitation method makes the washing process more thorough and effectively removes dirt from the plastic surface.

[0055] To ensure efficient transport of the cleaned waste plastics, the cleaning mechanism 31 closest to the transfer and loading mechanism 400 rotates in the opposite direction to the other cleaning mechanisms 31. This differentiated rotation direction allows the cleaning mechanism 31 closest to the transfer and loading mechanism 400 to actively feed the cleaned waste plastics onto the transfer and loading mechanism 400, while the remaining cleaning mechanisms 31 are responsible for turning and cleaning the waste plastics and gradually driving them toward the transfer and loading mechanism 400. Multiple sets of cleaning mechanisms 31 are connected by a drive mechanism 35, ensuring coordination between the cleaning and transport processes. The drive mechanism 35 transmits power from the cleaning motor 34 to all cleaning mechanisms 31 via belt drives 351 and 352, coordinating their rotation directions and achieving seamless integration of cleaning and transport.

[0056] The cleaned waste plastics are received by the transfer feeding mechanism 400. The transfer feeding mechanism 400 has a similar structure to the feeding conveyor mechanism 100, but without the feeding hopper 13. It lifts the cleaned waste plastics from the plastic washing tank 200 and conveys them to the feed hopper 56 of the crushing mechanism 500. This design ensures flexible connection and continuous operation between the washing and crushing processes.

[0057] Waste plastic enters the feed hopper 56 of the crushing mechanism 500 and falls into the crusher housing 52. The crusher housing 52 is fixedly mounted on the crusher frame 51, and multiple sets of crushing rollers 55 are installed inside the crusher housing 52. The crushing rollers 55 are rotatably mounted on the crusher housing 52 via crushing shafts 54. The crushing motor 57 fixedly mounted on the crusher frame 51 drives the gearbox 53 to rotate, and the gearbox 53 in turn drives the multiple sets of crushing shafts 54 and crushing rollers 55 to rotate, efficiently crushing the waste plastic and completing the final process before recycling.

[0058] During the cleaning process, the water in the plastic cleaning tank 200 gradually becomes dirty. To quickly replace the cleaning water and remove the sludge, the cleaning tank 22 of the plastic cleaning tank 200 is equipped with a drain hopper 221 and a sewage tank 222 at the bottom. A fixed partition 223 is provided at the bottom of the cleaning tank 22, and a through hole for drainage is provided in the middle of the fixed partition 223. Two sets of movable partitions 225 are slidably arranged below the through hole to block the through hole. When it is necessary to replace the water, the sewage motor 23 starts and drives the sewage shaft 24 to rotate. Sewage spiral blades 25 are provided on the outer periphery of the sewage shaft 24. At the same time, the sewage shaft 24 drives the bidirectional lead screw shaft 261 in the drain hopper 221 to rotate through the belt drive 262. The bidirectional lead screw shaft 261 is provided with external threads with opposite helical directions, and two sets of lead screw sliders 263 are threadedly connected. As the bidirectional lead screw shaft 261 rotates, the two sets of lead screw sliders 263 slide synchronously in opposite directions. The lead screw slider 263, driven by the linkage rod 264, drives the two sets of movable partitions 225 to slide outward synchronously, opening the through holes on the fixed partition 223. The dirty water and sludge in the cleaning tank 22 then flow into the drain tank 222. Inside the drain tank 222, the drain spiral vane 25, driven by the drain shaft 24, transports the flowing sludge to the outlet for discharge, achieving rapid cleaning of the sludge and avoiding the problems of sludge accumulation and difficult cleaning in traditional methods.

[0059] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A waste plastic recycling and crushing device, characterized in that: The system includes a feeding conveyor (100), a plastic washing tank (200), a transfer feeding mechanism (400), and a crushing mechanism (500) arranged in parallel. The feeding conveyor (100) is used to transport waste plastics into the plastic washing tank (200). The plastic washing tank (200) is equipped with multiple sets of washing components (300) for washing the waste plastics. The transfer feeding mechanism (400) is used to transport the washed waste plastics into the crushing mechanism (500). The crushing mechanism (500) is used to crush and recycle the waste plastics. The cleaning assembly (300) includes bearing seats (32) fixedly installed on both sides of the upper end of the plastic cleaning tank (200). A cleaning mechanism (31) is rotatably arranged between the two sets of bearing seats (32). The cleaning mechanism (31) includes a connecting main shaft (311). Both ends of the connecting main shaft (311) are provided with connecting discs (312). A connecting support shaft (317) rotatably connected to the bearing seat (32) is fixedly arranged at the center of the end of the connecting disc (312) away from the connecting main shaft (311). Multiple sets of material feeders (313) arranged in a circular array are fixedly arranged between the two sets of connecting discs (312). The material feeders (313) are located away from the connecting main shaft (311). A side connecting plate (314) is fixedly provided on the side, and a telescopic bracket (315) is slidably provided through the side connecting plate (314). Guide rods (316) are fixedly provided at both ends of the telescopic bracket (315). A guide groove (3121) for the guide rods (316) to pass through is provided on the connecting plate (312). A guide plate (33) for driving the telescopic bracket (315) to move axially is fixedly provided at the upper end of the plastic cleaning tank (200). A cleaning motor (34) for driving the cleaning mechanism (31) to rotate is fixedly provided on the plastic cleaning tank (200). Multiple sets of cleaning mechanisms (31) are connected by a drive mechanism (35).

2. The waste plastic recycling and crushing device according to claim 1, characterized in that: The feeding and conveying mechanism (100) includes a feeding frame (11), a conveying support (12) is fixedly inclined at the upper end of the feeding frame (11), a feeding hopper (13) is fixedly installed at the lower end of the conveying support (12), and conveying rollers (14) are rotatably installed at both ends of the conveying support (12). The two sets of conveying rollers (14) are connected by a conveyor belt (15). Several conveying baffles (16) for pushing waste plastics are fixedly installed on the conveyor belt (15). A conveying bracket (17) is fixedly installed at the upper end of the conveying support (12), and a conveying motor (18) for driving the conveying rollers (14) to rotate is fixedly installed on the conveying bracket (17). The structure of the transfer feeding mechanism (400) is the same as that of the feeding conveying mechanism (100), but the feeding hopper (13) is removed.

3. The waste plastic recycling and crushing device according to claim 1, characterized in that: The crushing mechanism (500) includes a crusher frame (51), a crusher box (52) is fixedly installed on the upper end of the crusher frame (51), a plurality of crushing rollers (55) are installed inside the crusher box (52), the crushing rollers (55) are rotatably mounted on the crusher box (52) via crushing shafts (54), a gearbox (53) is fixedly installed on the outer wall of the crusher box (52) and is connected to the plurality of crushing shafts (54) for transmission, a crushing motor (57) for driving the gearbox (53) to rotate is fixedly installed on the crusher frame (51), and a feed hopper (56) for feeding waste plastic is installed at the upper end of the crusher box (52).

4. The waste plastic recycling and crushing device according to claim 1, characterized in that: The cleaning mechanism (31) on the side closer to the transfer feeding mechanism (400) rotates in the opposite direction to the other cleaning mechanisms (31). The cleaning mechanism (31) on the side closer to the transfer feeding mechanism (400) is used to feed the cleaned waste plastics into the transfer feeding mechanism (400). The other cleaning mechanisms (31) are used to turn the waste plastics over for cleaning and to drive the plastics toward the transfer feeding mechanism (400).

5. The waste plastic recycling and crushing device according to claim 4, characterized in that: The drive mechanism (35) includes a drive support (353) disposed between two adjacent sets of cleaning mechanisms (31) on the side near the transfer loading mechanism (400). Two sets of connecting shafts (354) are rotatably mounted on the drive support (353). Meshing transmission gears (355) are fixedly disposed on both sets of connecting shafts (354). The connecting shafts (354) are connected to the connecting support shafts (317) on the adjacent cleaning mechanisms (31) by a belt drive three (352). The adjacent cleaning mechanisms (31) away from the transfer loading mechanism (400) are connected by a belt drive two (351).

6. The waste plastic recycling and crushing device according to claim 5, characterized in that: The center of the guide plate (33) is provided with a plate through hole (331) for the connecting support shaft (317) to pass through. The end face of the guide plate (33) near the cleaning mechanism (31) is provided with a guide drive groove (332) for driving the guide rod (316) to slide back and forth along the guide groove (3121). The side of the guide plate (33) away from the cleaning mechanism (31) is fixedly provided with a plate support (333). The guide plate (33) is fixedly installed on the plastic cleaning tank (200) through the plate support (333). When the telescopic bracket (315) rotates into the plastic cleaning tank (200), the guide rod (316) slides in the guide drive groove (332), thereby driving the drive mechanism (35) to slide outward, so that the drive mechanism (35) extends out to stir and move the waste plastic, thereby realizing the cleaning and feeding of waste plastic.

7. The waste plastic recycling and crushing device according to claim 1, characterized in that: The plastic cleaning tank (200) includes a cleaning tank support (21), a cleaning box (22) is fixedly installed at the upper end of the cleaning tank support (21), a drain hopper (221) is installed at the lower part of the cleaning box (22), a sludge discharge box (222) is installed at the bottom of the drain hopper (221), a sludge discharge mechanism for discharging cleaning sludge is installed in the sludge discharge box (222), and a partition mechanism is installed between the drain hopper (221) and the cleaning box (22).

8. The waste plastic recycling and crushing device according to claim 7, characterized in that: The sewage discharge mechanism includes a sewage discharge shaft (24) rotatably installed in a sewage discharge box (222). The outer periphery of the sewage discharge shaft (24) is provided with a sewage discharge spiral blade (25) for sewage discharge. The outer periphery of the cleaning box (22) is fixedly provided with a sewage discharge motor (23) for driving the sewage discharge shaft (24) to rotate.

9. The waste plastic recycling and crushing device according to claim 8, characterized in that: The partition mechanism includes a fixed partition (223) fixedly installed at the bottom of the cleaning tank (22). The fixed partition (223) has a through hole for drainage in the middle. The lower end of the fixed partition (223) is slidably provided with two sets of movable partitions (225) for blocking the through hole. The lower end of the fixed partition (223) is provided with a guide frame (224) for guiding and limiting the sliding of the movable partitions (225). The drainage hopper (221) is provided with a linkage mechanism (26). The linkage mechanism (26) is connected to the sewage shaft (24) and is used to drive the two sets of movable partitions (225) to slide synchronously.

10. A waste plastic recycling and crushing device according to claim 9, characterized in that: The linkage mechanism (26) includes a bidirectional lead screw shaft (261) rotatably installed in the drainage hopper (221). The bidirectional lead screw shaft (261) is connected to the sewage shaft (24) via a belt drive (262). The bidirectional lead screw shaft (261) is provided with external threads in opposite directions. Two sets of lead screw sliders (263) are threadedly connected to the bidirectional lead screw shaft (261). Both sides of the lead screw sliders (263) are rotatably connected to linkage rods (264). The end of the linkage rod (264) away from the lead screw sliders (263) is rotatably connected to the sewage spiral blade (25). When the water in the plastic cleaning tank (200) needs to be replaced, the sewage motor (23) starts and drives the sewage shaft (24) to rotate. Through the belt drive (262), the bidirectional lead screw shaft (261) rotates. Using the lead screw transmission principle, the two sets of lead screw sliders (263) slide synchronously in opposite directions. The lead screw sliders (263) drive the two sets of sewage spiral blades (25) to slide outward synchronously through the linkage rod (264) so ​​that the through hole opens. This allows the water and sludge in the cleaning tank (22) to flow into the sewage tank (222). Under the drive of the sewage spiral blades (25), the sludge is transported to the outlet and discharged.

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