A dry-wet linkage regenerated PP purification modification device and process

Abstract

The application relates to the technical field of regenerated plastic processing treatment, and provides a dry-wet linkage regenerated PP purification modification device and process, which comprises a base, the top of the base is provided with a motor, the top of the base is fixedly connected with a rubbing cleaning pool in the middle end, the rubbing cleaning pool is rotationally connected with a shaft rod in the inside, the outer wall of the shaft rod in the inside of the rubbing cleaning pool is fixedly connected with spiral blades in the middle end, the spiral blades are used for conveying the materials entering the rubbing cleaning pool and rubbing the materials with each other in the inside, the front and rear ends of the shaft rod penetrate through the rubbing cleaning pool, the shaft rod is connected with the motor through a chain sprocket, the outer wall right end of the shaft rod is provided with a reciprocating driving assembly, the shaft rod is driven to rotate through the motor, and the reciprocating driving assembly is driven to move. The dry method is used for realizing pre-purification, the subsequent wet method load is reduced, the non-continuous agitation is used for forcibly wetting and preventing blockage, and the reciprocating collision is used for preventing material adhesion, so that the separation purity and the yield are obviously improved.

Description

Technical Field

[0001] This invention relates to the field of recycled plastic processing technology, specifically to a dry-wet combined recycled PP purification and modification device and process. Background Technology

[0002] Recycled polypropylene (PP), as an important type of general-purpose plastic, is widely used in packaging, automobiles, and home appliances. With the continuous growth in the consumption of plastic products, the recycling and reuse of waste PP has become a key way to alleviate resource shortages and reduce white pollution. However, recycled PP materials are usually mixed with dust, paper scraps, oil stains, adhesives, silt, and heterogeneous fragments of different densities, and must undergo purification and modification treatment to restore their performance.

[0003] Existing semi-continuous purification equipment often separates dry dust removal and wet cleaning processes, lacking effective coordination between the units. In the dry dust removal stage, materials are typically swept using vibration or airflow, but due to severe material stacking, lightweight impurities such as dust and paper scraps are difficult to expose, resulting in unsatisfactory dust removal. Upon entering the wet cleaning stage, these residual impurities easily adhere to the surface of the PP fragments when wet, making them even more difficult to remove. Simultaneously, bridging, blockage, or insufficient surface wetting frequently occur during material transport within the cleaning tank, leading to a decrease in friction cleaning effectiveness. In the subsequent density sorting stage, the softened surface of the PP fragments or their residual adhesiveness cause floating materials to easily adhere and stack, resulting in incomplete separation of heavy impurities (such as sand and metal shavings) at the bottom, affecting the final purity. Therefore, a dry-wet integrated regeneration PP purification and modification device and process is needed. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a dry-wet linkage regeneration PP purification and modification device and process, which solves the problems of dry-wet separation in existing semi-continuous purification equipment, insufficient exposure of debris due to material stacking in dry dust removal, and easier adhesion of residual debris after encountering water; bridging, clogging and insufficient wetting reducing friction effect in wet cleaning; and adhesion and stacking of floating materials during density sorting, resulting in incomplete separation of heavy impurities.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a dry-wet linkage regeneration PP purification and modification device, comprising:

[0006] The base has a motor mounted on its top and a friction cleaning tank fixedly connected to its top center. A shaft is rotatably connected inside the friction cleaning tank, and a spiral blade is fixedly connected to the middle of the outer wall of the shaft inside the tank to convey the material entering the tank and cause the material to rub against each other inside. The front and rear ends of the shaft penetrate the friction cleaning tank and are connected to the motor via a chain and sprocket. A reciprocating drive assembly is located on the right end of the outer wall of the shaft, which is driven by the motor to rotate. A dust collection assembly is also connected to the right end of the shaft to remove debris from the unpurified material. An auger conveyor is also located on the right side of the base to transport the material.

[0007] A feeding plate is fixedly connected to the top right end of the base. The left end of the feeding plate communicates with the interior of the washing tank, and the right end of the feeding plate is connected to the top discharge port of the auger conveyor. A turbulence-inducing component is provided on the outer wall of the feeding plate. This component is connected to the reciprocating drive assembly via a transmission plate to reciprocate and turbulently circulate the material conveyed to the feeding plate by the auger conveyor, allowing the dust collection assembly to remove debris obscured by the material accumulation.

[0008] A rinsing tank is installed on the right side of the top of the friction cleaning tank. An agitation component is installed inside the rinsing tank. The top of the agitation component is connected to a linkage component via a disc. The linkage component is connected to the top of a transmission plate. The transmission plate slides laterally left and right through a reciprocating drive component, thereby driving the connecting rod to swing and rotate the agitation component. This agitates the material entering the rinsing tank, increases the contact area between the material and water, and prevents material blockage.

[0009] The wastewater tank is located at the rear of the base and is connected to the interior of the friction cleaning tank via a wastewater pipe. The wastewater tank is equipped with a lifting and stirring assembly, which is connected to a disc via a synchronous belt and synchronous pulley. The rotation of the disc drives the lifting and stirring assembly to vertically lift and stir the wastewater and disinfectant inside the wastewater tank, thereby increasing the mixing effect.

[0010] A sedimentation tank is located on the left side of the base. An auger is rotatably connected to the bottom of the inner wall of the sedimentation tank. The left end of the auger is connected to the left end of the shaft via a chain and sprocket. The shaft rotates to drive the auger to rotate, thereby transporting the fragments with different densities from the settled material to the left end of the sedimentation tank, and then discharging them through a drain valve at the bottom. A reciprocating collision component is provided on the left end of the outer wall of the shaft to collide with and disperse the material that has piled up or stuck together due to friction and cleaning, thereby ensuring the sedimentation effect.

[0011] A water storage tank is installed inside the base and is connected to the middle of the friction cleaning tank and the sewage tank through a diversion pipe.

[0012] Preferably, the reciprocating drive assembly includes a bidirectional thread formed on the right end of the outer wall of the shaft and a limiting slide rod fixedly connected to the top right end of the base. A fixing frame is sleeved on the outside of the bidirectional thread. The top of the fixing frame is fixedly connected to the bottom of the transmission plate. The two bottom ends of the fixing frame slide in cooperation with the limiting slide rod to achieve sliding limit of the fixing frame.

[0013] Preferably, the dust collection assembly includes a turbine fan, a connecting housing, and a dust collection port. The turbine fan is fixedly connected to the right end of the shaft so that the rotation of the shaft realizes the rotation of the turbine fan. The connecting housing is fixedly connected to the top right end of the base and is connected to the turbine fan through an air duct. The dust collection port is fixedly connected to the bottom left and right ends of the transmission plate and is connected to the dust collection inlet end of the connecting housing through an air duct.

[0014] Preferably, the flow-disrupting assembly includes a fixed bracket fixedly connected to one side of the outer wall of the feeding plate. A sliding plate slides horizontally inside the inner wall of the fixed bracket via a spring. One end of the sliding plate is rotatably connected to a roller. The roller abuts against the inner wall of the transmission plate near its side, and this side has an arc-shaped groove. The lateral sliding and limiting of the sliding plate is achieved by the abutting between the inner arc surface of the arc-shaped groove and the roller. Multiple flow-disrupting rods are fixedly connected to the bottom of the sliding plate to drive its lateral movement and interfere with the flow of materials. The bottom of each flow-disrupting rod is fixedly connected to a contact plate to cooperate with the flow-disrupting rod and move the bottom material.

[0015] Preferably, the agitation assembly includes an annular groove and multiple wing plates. The annular groove is formed at the top of the inner wall of the rinsing tank. The multiple wing plates are fixedly connected to the outer side of the disc. The outer ends of the multiple wing plates are rotatably connected to rollers that abut against the inner wall of the annular groove, so that the disc remains at the axis of the rinsing tank while rotating. The bottom outer end of the wing plate is also provided with a limiting ball for supporting the end and abutting against the inner wall of the annular groove. The bottom sides of the disc and the wing plates are fixedly connected to agitating rods for direct contact and agitation of the material.

[0016] Preferably, the linkage component includes a vertical rod fixedly connected to one side of the top edge of the disc, and a connecting rod rotatably connected to the outside of the vertical rod, the connecting rod being rotatably connected to the top of the transmission plate.

[0017] Preferably, the lifting and stirring assembly includes an upper part and a lower part of a stirring rod connected by a tension spring. The upper part of the stirring rod is rotatably connected to the top of the sewage tank via a sealed bearing. The upper part of the stirring rod is fixedly connected to a transmission wheel on one side. An abutment rod is fixedly connected to the middle of the outer side of the lower part of the stirring rod. A second ball bearing is provided on the top of the abutment rod. A limit plate is fixedly connected to the top of the inner wall of the sewage tank. The bottom side of the limit plate is a non-horizontal inclined surface, which, in conjunction with the second ball bearing and the tension spring, enables the upper part of the stirring rod to drive the lower part of the stirring rod to rotate while the lower part of the stirring rod continuously abuts against the outer side of the second ball bearing through the inclined surface, thereby allowing the lower part of the stirring rod to move vertically up and down.

[0018] Preferably, the reciprocating collision assembly includes a reciprocating chute and a U-shaped movable plate. The reciprocating chute is located on the left end of the outer wall of the shaft. A sliding sleeve is fitted on the outer side of the reciprocating chute. The inner wall of the sliding sleeve is provided with a ball bearing adapted to the size of the reciprocating chute, so that the ball bearing slides on the inner wall of the reciprocating chute by rotating the shaft, thereby causing the sliding sleeve to reciprocate on the outer wall of the shaft. The movable plate is slidably connected to the right end of the inner wall of the sedimentation tank. A striking rod is fixedly connected to the top of the movable plate. The top of the striking rod is higher than the horizontal plane to impact the material floating on the horizontal plane. The left end of the movable plate is connected to the bottom side of the sliding sleeve by a fixed rod, so that the movable plate slides horizontally in the sedimentation tank by sliding the sliding sleeve left and right.

[0019] Preferably, a baffle is provided in the middle of the inner wall of the sewage tank to block water splashing caused by the lifting and stirring mechanism. A guide plate is also provided at the water outlet at the left end of the inner wall of the sedimentation tank to guide the floating material. The blade spacing of the spiral blades near the discharge port should be greater than the blade spacing at the left end to increase the rinsing and soaking time of the material at the right end.

[0020] A dry-wet combined recycling process for PP purification and modification includes the following steps:

[0021] Step 1: The recycled PP material to be purified is lifted to the top outlet by the auger conveyor and falls into the feeding plate; the motor drives the shaft to rotate, and the bidirectional thread on the right end of the shaft drives the fixed frame and the transmission plate to slide back and forth. The transmission plate pushes the roller one through the arc groove, so that the slide plate slides laterally, which in turn drives the baffle bar and the contact plate to move the material back and forth on the feeding plate, so that the stacked material is loosened and the internal debris is exposed; at the same time, the right end of the shaft directly drives the turbine fan to rotate to generate negative pressure, which removes light debris, dust, paper scraps and other materials from the surface of the material on the feeding plate through the connecting box and the two dust suction ports on the left and right, so as to achieve dry pre-purification;

[0022] Step 2: After dry dust removal, the material falls from the left end of the feeding plate into the rinsing tank, and water continuously enters the rinsing tank. When the transmission plate slides back and forth, it pulls the upright through the connecting rod, causing the disc and wing plate to rotate back and forth in the rinsing tank. The stirring rod at the bottom of the wing plate stirs the material to prevent bridging and blockage, while forcing the material to fully contact the water, so that the surface of all PP fragments is wetted, in preparation for subsequent friction cleaning.

[0023] Step 3: The material enters the friction cleaning tank from the bottom of the rinsing tank. The shaft drives the spiral blades to rotate, pushing the material from left to right. The blade spacing at the right discharge port is greater than that on the left to increase the rinsing and soaking time of the material on the right side. Under the agitation of the spiral blades, the material rubs violently against each other and against the tank wall, peeling off the oil, glue, mud and other impurities attached to the surface. The wastewater generated during cleaning is discharged into the wastewater tank through the wastewater pipe.

[0024] Step 4: Disinfectant is injected into the sewage tank. The rotation of the shaft drives the upper part of the stirring rod to rotate through the synchronous belt and synchronous pulley. Under the action of the tension spring, the ball bearings on the lower part of the stirring rod roll along the non-horizontal inclined surface on the bottom side of the limiting plate, so that the lower part of the stirring rod continues to rise and fall vertically while rotating, thereby performing compound stirring of sewage and disinfectant, accelerating the flocculation and sedimentation of suspended solids, and improving the mixing effect.

[0025] Step 5: After friction cleaning, the material enters the sedimentation tank from the left outlet of the friction cleaning tank. Impurities with a density greater than PP sink to the bottom of the tank. The left end of the shaft drives the auger at the bottom of the sedimentation tank to rotate via a chain and sprocket, conveying the sedimented debris to the left end and periodically discharging it through the drain valve. At the same time, the reciprocating chute at the left end of the shaft drives the sliding sleeve to move back and forth through the ball bearings. The sliding sleeve pulls the movable plate and the impact rod horizontally in the sedimentation tank via the fixed rod. The impact rod repeatedly collides with the PP material floating on the water surface to prevent them from sticking together or piling up due to the softening of the surface after friction cleaning, ensuring thorough density separation.

[0026] Step 6: The purified PP material floats on the water surface and moves with the water flow to the left end of the sedimentation tank. It is then guided by the guide plate at the outlet of the left end of the sedimentation tank and discharged from the outlet to enter the next process.

[0027] Working principle: The motor drives the shaft to rotate, and the bidirectional thread on the right end of the shaft drives the fixed frame and transmission plate to slide back and forth. At the same time, the right end of the shaft directly drives the turbine fan to rotate and generate negative pressure, which removes light debris from the material on the feeding plate through the connecting box and the dust suction port. When the transmission plate slides back and forth, it pushes the roller one through the arc groove, causing the slide plate to slide laterally, which drives the baffle bar and the contact plate to move the material back and forth on the feeding plate, making the stacked material loose and exposing the debris trapped inside, thus realizing dry pre-purification.

[0028] After dry dust removal, the material falls from the left end of the feeding plate into the washing tank. Water continuously enters the washing tank. At the same time, the transmission plate pulls the upright through the connecting rod, causing the disc and wing plate to rotate back and forth in the washing tank. The stirring rod at the bottom of the wing plate stirs the material to prevent bridging and blockage and to force the material to fully contact the water, so that the surface of all PP fragments is wetted.

[0029] The material enters the friction cleaning tank from the bottom of the rinsing tank. The shaft drives the spiral blades to rotate, pushing the material from left to right. The blade spacing at the right feed port is greater than that on the left to increase the rinsing and soaking time. Under the agitation of the spiral blades, the material rubs violently against each other and against the tank wall, peeling off the oil, glue, mud and other impurities attached to the surface. The wastewater generated during cleaning is discharged into the wastewater tank through the wastewater pipe.

[0030] Disinfectant is injected into the sewage tank. The rotation of the shaft drives the upper part of the stirring rod to rotate through the synchronous belt and synchronous pulley. Under the action of the tension spring, the ball bearings on the lower part of the stirring rod roll along the non-horizontal inclined surface of the bottom side of the limiting plate, so that the lower part of the stirring rod continuously rises and falls vertically while rotating, and performs compound stirring of sewage and drug to accelerate flocculation and sedimentation.

[0031] After friction cleaning, the material enters the sedimentation tank from the left outlet of the friction cleaning tank. Impurities with a density greater than PP sink to the bottom of the tank. The left end of the shaft drives the auger at the bottom of the sedimentation tank to rotate via a chain and sprocket, conveying the sedimented debris to the left end and discharging it through the drain valve. At the same time, the reciprocating slide at the left end of the shaft drives the sliding sleeve to move back and forth through the ball bearings. The sliding sleeve pulls the movable plate and the impact bar to slide horizontally in the sedimentation tank via the fixed rod. The impact bar repeatedly collides with the PP material floating on the water surface to prevent the material from sticking together or piling up.

[0032] The purified PP material floats on the water surface and moves with the water flow to the left end of the sedimentation tank. It is then guided out through the guide plate at the outlet of the sedimentation tank and enters the next step of dewatering, drying or modification granulation process. Throughout the process, the water storage tank supplies water to the middle of the friction cleaning tank and the sewage tank through the diversion pipe. All mechanical actions are completed synchronously by a single motor-driven shaft, realizing the whole process linkage purification of dry dust removal, wet wetting, friction cleaning, sewage and drug mixing, and sedimentation density sorting.

[0033] This invention provides a dry-wet combined recycling PP purification and modification device and process. It has the following beneficial effects:

[0034] This invention utilizes a reciprocating turbulent motion to loosen and tumble stacked material layers, exposing lightweight debris such as dust, paper scraps, and fibers trapped inside or at the bottom to the surface. Combined with a continuous suction-type dust removal method, this achieves highly efficient dry pre-purification of recycled PP materials. This significantly reduces the impurity load in subsequent wet cleaning, lowers water consumption and wastewater treatment pressure, and avoids the problem of lightweight debris adhering to the material surface in a humid environment and being difficult to remove.

[0035] This invention utilizes continuous and discontinuous rotational agitation to ensure thorough contact between the material and clean water, generating turbulence and forcing all fragment surfaces to be wetted, thus creating favorable conditions for subsequent friction cleaning. Simultaneously, this agitation effectively breaks up material bridging or clumping, preventing blockage at the discharge port and ensuring continuous and uniform entry of material into the main cleaning zone, thereby improving the stability and processing efficiency of the equipment.

[0036] This invention effectively prevents the material from sticking together and stacking due to surface softening or residual stickiness through continuous reciprocating collisions, ensuring that each piece of material can maintain an independent floating state, thereby completely separating it from the sediment and significantly improving the purity and yield of density sorting. Attached Figure Description

[0037] Figure 1 This is a perspective view of the present invention;

[0038] Figure 2 This is a schematic diagram of the fixing frame structure of the present invention;

[0039] Figure 3 This is a schematic diagram of the limiting slide bar structure of the present invention;

[0040] Figure 4 This is a schematic diagram of the transmission plate structure of the present invention;

[0041] Figure 5 This is a schematic diagram of the skateboard structure of the present invention;

[0042] Figure 6 This is a schematic diagram of the spiral blade structure of the present invention;

[0043] Figure 7 This is a schematic diagram of the disk structure of the present invention;

[0044] Figure 8 This is a schematic diagram of the sewage tank structure of the present invention;

[0045] Figure 9 This is a schematic diagram of the limiting plate structure of the present invention;

[0046] Figure 10 This is a schematic diagram of the abutment rod structure of the present invention;

[0047] Figure 11 This is a schematic diagram of the sedimentation tank structure of the present invention;

[0048] Figure 12 This is a schematic diagram of the movable plate structure of the present invention;

[0049] Figure 13 This is a schematic diagram of the sliding sleeve structure of the present invention;

[0050] Figure 14 This is a schematic diagram of the guide plate structure of the present invention.

[0051] The components include: 1. Base; 2. Water tank; 3. Motor; 4. Friction cleaning tank; 5. Shaft; 6. Spiral blade; 7. Ball bearings; 8. Feeding plate; 9. Screw conveyor; 10. Washing tank; 11. Sedimentation tank; 12. Bidirectional thread; 13. Fixing frame; 14. Transmission plate; 15. Arc groove; 16. Roller; 17. Fixing bracket; 18. Slide plate; 19. Baffle bar; 20. Contact plate; 21. Turbine fan; 22. Connecting box; 23. Suction... 24. Dust inlet; 25. Connecting rod; 26. Limiting slide rod; 27. Upright rod; 28. Disc; 29. ​​Wing plate; 30. Roller II; 31. Limiting ball; 32. Annular groove; 33. Diverter pipe; 34. Reciprocating slide groove; 35. Sliding sleeve; 36. Fixed rod; 37. Movable plate; 38. Impact rod; 39. Guide plate; 40. Sewage tank; 41. Limiting plate; 42. Upper part of stirring rod; 43. Lower part of stirring rod; 44. Abutment rod; 45. Baffle; 46. Ball bearing I. Detailed Implementation

[0052] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0053] Example:

[0054] This invention provides a dry-wet combined recycling PP purification and modification device, comprising:

[0055] Please see the appendix Figure 1 Appendix Figure 3 and attached Figure 6A base 1 has a motor 3 mounted on its top. A friction cleaning tank 4 is fixedly connected to the middle of the top of the base 1. A shaft 5 is rotatably connected inside the friction cleaning tank 4. A spiral blade 6 is fixedly connected to the middle of the outer wall of the shaft 5 inside the friction cleaning tank 4 to convey the material entering the friction cleaning tank 4 and drive the material to rub against each other inside. The front and rear ends of the shaft 5 pass through the friction cleaning tank 4. The shaft 5 is connected to the motor 3 via a chain and sprocket. A reciprocating drive assembly is provided at the right end of the outer wall of the shaft 5. The reciprocating drive assembly is driven by the rotation of the shaft 5 by the motor 3. The reciprocating drive assembly includes... A bidirectional thread 12 is formed on the right end of the outer wall of the shaft 5 and a limiting slide rod 25 is fixedly connected to the top right end of the base 1. A fixing frame 13 is sleeved on the outside of the bidirectional thread 12. The top of the fixing frame 13 is fixedly connected to the bottom of the transmission plate 14. The two ends of the bottom of the fixing frame 13 are slidably engaged with the limiting slide rod 25 to realize the sliding limit of the fixing frame 13. The water storage tank 2 is set inside the base 1. The water storage tank 2 is connected to the middle end of the friction cleaning tank 4 and the sewage tank 39 through the diversion pipe 32 respectively. The blade spacing of the spiral blade 6 near the discharge port is greater than the blade spacing of the left end to increase the rinsing and soaking time of the material on the right end.

[0056] Specifically, motor 3 serves as the sole power source for the entire device, transmitting power to shaft 5 via chain and sprocket. Shaft 5 rotates continuously within the friction cleaning tank 4. The bidirectional thread 12 at the right end of shaft 5 allows the fixed frame 13 to reciprocate smoothly under the constraint of the limiting slide bar 25. The sliding stroke is determined by the pitch and length of the bidirectional thread 12. Two limiting slide bars 25 are provided, located at the bottom ends of the fixed frame 13 respectively, ensuring that the fixed frame 13 does not deflect during high-speed reciprocating motion. A filter screen and water level controller can be installed inside the water storage tank 2. Adjusting valves can be installed on the diversion pipe 32 to control the amount of water entering the friction cleaning tank 4 and the sewage tank 39 respectively. The spiral blades 6 on the right side (feeding port end) have a larger blade spacing, which prolongs the residence time of the material in this area, thereby obtaining a more thorough soaking and wetting effect, which is beneficial for the removal of impurities during subsequent friction cleaning.

[0057] Please see the appendix Figure 2 Appendix Figure 3 and attached Figure 5The right end of the shaft 5 is also connected to a dust collection component to remove debris from the unpurified material. The dust collection component includes a turbine fan 21, a connecting box 22, and a dust collection port 23. The turbine fan 21 is fixedly connected to the right end of the shaft 5 so that the rotation of the shaft 5 can realize the rotation of the turbine fan 21. The connecting box 22 is fixedly connected to the top right end of the base 1. The connecting box 22 is connected to the turbine fan 21 through an air duct. The dust collection port 23 is fixedly connected to the bottom left and right ends of the transmission plate 14. The dust collection ports 23 are all connected to the dust collection inlet end of the connecting box 22 through an air duct. The right side of the base 1 is also equipped with an auger conveyor 9 to realize the conveying of materials.

[0058] Specifically, the turbine fan 21 is directly installed on the right end of the shaft 5 without the need for an additional transmission mechanism. When the shaft 5 rotates, the turbine fan 21 rotates synchronously to generate negative pressure airflow. The dust collection filter bag is set inside the connecting box 22 to collect the sucked debris. The dust suction port 23 is designed to be flat, and its opening width is slightly larger than the width of the feeding plate 8. The dust suction port 23 moves left and right with the transmission plate 14 to ensure dynamic sweeping dust collection on the entire surface of the material on the feeding plate 8. The feed inlet of the auger conveyor 9 is connected to the upstream crushing or drying equipment, and its discharge port is higher than the feeding plate 8. The material falls onto the feeding plate 8 by gravity to form a uniform material layer.

[0059] Please see the appendix Figure 2 Appendix Figure 4 and attached Figure 5 The feeding plate 8 is fixedly connected to the top right end of the base 1. The left end of the feeding plate 8 is connected to the interior of the washing tank 10, and the right end of the feeding plate 8 is connected to the top discharge port of the auger conveyor 9. The outer wall of the feeding plate 8 is provided with a turbulence component, which is connected to the reciprocating drive component through a transmission plate 14 to turbulently move the material conveyed to the feeding plate 8 by the auger conveyor 9, so that the dust collection component can remove the debris covered by the material accumulation. The turbulence component includes a fixed bracket 17 fixedly connected to one side of the outer wall of the feeding plate 8, and the inner wall of the fixed bracket 17 is... A slide plate 18 slides horizontally via a spring. One end of the slide plate 18 is rotatably connected to a roller 16. The roller 16 abuts against the inner wall of the transmission plate 14 near its side, and an arc-shaped groove 15 is provided on this side. The lateral sliding and limiting of the slide plate 18 is achieved by the abutment of the inner arc surface of the arc-shaped groove 15 with the roller 16. Multiple baffle rods 19 are fixedly connected to the bottom of the slide plate 18. The lateral movement of the slide plate 18 drives the baffle rods to move laterally and interfere with the flow of materials. A contact plate 20 is fixedly connected to the bottom of the baffle rods 19 to cooperate with the baffle rods 19 and move the bottom material.

[0060] Specifically, the feeding plate 8 is inclined, with the right end higher than the left end, which facilitates the material to slide automatically to the left under the action of gravity. The fixed bracket 17 is fixed to the rear outer wall of the feeding plate 8 by bolts. It has a horizontal slide rail inside. The slide plate 18 is elastically reset in the slide rail by a spring. The cooperation between the roller 16 and the arc groove 15 forms a driven mechanism: when the transmission plate 14 slides back and forth, the inner arc surface of the arc groove 15 contacts the roller 16 at different positions, pushing the slide plate 18 to extend outward or retract under the action of the inner spring. There are three to five baffle rods 19, which are evenly distributed along the length of the slide plate 18. The contact plate 20 at the bottom is a wear-resistant rubber or plastic plate that directly contacts the bottom of the material layer. This reciprocating motion can make the material layer "roll" and expose the debris at the bottom or inside to the surface, which is convenient for the dust suction port 23 to suck it away.

[0061] Please see the appendix Figure 1 Appendix Figure 2 and attached Figure 7 The rinsing tank 10 is installed on the right side of the top of the friction cleaning tank 4. An agitation assembly is installed inside the rinsing tank 10. The top of the agitation assembly is connected to a linkage assembly via a disc 27. The linkage assembly is connected to the top of a transmission plate 14. A reciprocating drive assembly causes the transmission plate 14 to slide laterally left and right, thereby driving the connecting rod 24 to swing and rotate the agitation assembly. This agitates the material entering the rinsing tank 10, increasing the contact area between the material and water and preventing material blockage. The agitation assembly includes an annular groove 31 and multiple blades. Plate 28 and annular groove 31 are formed at the top of the inner wall of the rinsing tank 10. Multiple wing plates 28 are fixedly connected to the outer side of the disc 27. The outer ends of the multiple wing plates 28 are rotatably connected to rollers 29 that abut against the inner wall of the annular groove 31, so that the disc 27 remains at the axis of the rinsing tank 10 while rotating. The bottom outer end of the wing plate 28 is also provided with a limiting ball 30 for supporting the end and abutting against the inner wall of the annular groove 31. Stirring rods are fixedly connected to the bottom sides of the disc 27 and the wing plates 28 to directly contact and agitate the material.

[0062] Specifically, the bottom of the rinsing tank 10 is connected to the top opening on the right end of the friction cleaning tank 4. The rotation of the disc 27 is not a continuous full rotation, but a reciprocating swing under the pull of the connecting rod 24, with a swing angle of about 60° to 120°. This swing mode generates more turbulence than continuous rotation, which is beneficial to the mixing of materials and water. The number of wing plates 28 is preferably three or four, evenly distributed on the outer periphery of the disc 27. The roller 29 and the limiting ball 30 together form a double limit to prevent the disc 27 from tilting or getting stuck during the swing. The stirring rod is made of soft rubber or silicone material, and its length extends to the middle and lower part of the rinsing tank 10. When the stirring rod swings back and forth, it can stir the material without damaging the PP fragments. In addition, the upper side wall of the rinsing tank 10 is provided with a water inlet connected to the diversion pipe 32 to continuously inject clean water and form countercurrent or cocurrent contact with the material.

[0063] Please see the appendix Figure 8 - Appendix Figure 10 The wastewater tank 39 is located on the rear side of the base 1. The wastewater tank 39 is connected to the interior of the friction cleaning tank 4 through a wastewater pipe. A lifting and stirring assembly is installed inside the wastewater tank 39. The lifting and stirring assembly is connected to the disc 27 through a synchronous belt and synchronous pulley. The rotation of the disc 27 drives the lifting and stirring assembly to vertically lift and stir the wastewater and disinfectant inside the wastewater tank 39, thereby increasing the mixing effect. The linkage assembly includes a vertical rod 26 fixedly connected to one side of the top edge of the disc 27. A connecting rod 24 is rotatably connected to the outside of the vertical rod 26. The connecting rod 24 is rotatably connected to the top of the transmission plate 14. The lifting and stirring assembly includes an upper stirring rod 41 and a lower stirring rod 42 connected by a tension spring. The upper part 41 of the stirring rod is rotatably connected to the top of the sewage tank 39 via a sealed bearing. The upper part 41 of the stirring rod is fixedly connected to a transmission wheel on one side. The lower part 42 of the stirring rod is fixedly connected to the middle of its outer side with an abutment rod 43. A ball bearing 7 is provided on the top of the abutment rod 43. A limit plate 40 is fixedly connected to the top of the inner wall of the sewage tank 39. The bottom side of the limit plate 40 is a non-horizontal inclined surface, which, in conjunction with the ball bearing 7 and the tension spring, enables the upper part 41 of the stirring rod to drive the lower part 42 of the stirring rod to rotate. At the same time, the inclined surface continuously abuts against the outer side of the ball bearing 7, thereby causing the lower part 42 of the stirring rod to move vertically up and down. A baffle 44 is provided at the middle of the inner wall of the sewage tank 39 to prevent water splashing caused by the lifting and stirring mechanism.

[0064] Specifically, the reciprocating oscillation of the disc 27 transmits power to the upper part 41 of the stirring rod via a synchronous belt and synchronous pulley, causing the upper part 41 of the stirring rod to rotate reciprocally. Since the upper part 41 of the stirring rod is mounted on the top of the sewage tank 39 through a sealed bearing, its rotation angle is limited, but sufficient to drive the lower part 42 of the stirring rod to rotate. The non-horizontal inclined surface on the bottom side of the limiting plate 40 can be a spiral inclined surface or a segmented slope. When the lower part 42 of the stirring rod rotates, the ball bearing 7 rolls along the inclined surface, forcing the lower part 42 of the stirring rod to float up and down under the tension of the tension spring, realizing a compound motion of "rotating and lifting". This stirring method can effectively prevent the drug from settling at the bottom of the tank, while increasing the turbulence intensity of the mixing of sewage and drug. The baffle 44 is ring-shaped and fixed in the middle of the inner wall of the sewage tank 39. It can block the splashing water generated by stirring from splashing upwards, and will not hinder the lifting and lowering motion of the lower part 42 of the stirring rod. The bottom of the sewage tank 39 is provided with a drain port for periodically discharging the flocculated sludge.

[0065] Please see the appendix Figure 11 Appendix Figure 12 and attached Figure 14The sedimentation tank 11 is located on the left side of the base 1. The bottom of the inner wall of the sedimentation tank 11 is rotatably connected to an auger. The left end of the auger is connected to the left end of the shaft 5 through a chain and sprocket. The shaft 5 rotates to drive the auger to rotate, thereby transporting the fragments with different densities from the sediment at the bottom to the left end of the sedimentation tank 11, and then discharging them through the drain valve at the bottom. The left end of the outer wall of the shaft 5 is equipped with a reciprocating collision component to collide with the materials that have piled up or stuck together due to friction and cleaning in the sedimentation tank 11, so as to disperse them and ensure the sedimentation effect.

[0066] Specifically, the sedimentation tank 11 is a rectangular open tank body, which is divided into a sedimentation zone and an outlet zone. The auger at the bottom adopts a shaft spiral form to push the deposited heavy debris such as sand, metal shavings, and glass fragments to the left. The outlet at the left end of the inner wall of the sedimentation tank 11 is also equipped with a guide plate 38 to guide the floating material. The guide plate 38 is inclined and fixed inside the outlet to guide the floating material to be discharged smoothly with the water flow, preventing the material from accumulating and clogging at the outlet. The outlet of the sedimentation tank 11 is connected to the subsequent dewatering or drying equipment through a pipe.

[0067] Please see the appendix Figure 13 The reciprocating collision assembly includes a reciprocating chute 33 and a U-shaped movable plate 36. The reciprocating chute 33 is opened at the left end of the outer wall of the shaft 5. A sliding sleeve 34 is sleeved on the outer side of the reciprocating chute 33. The inner wall of the sliding sleeve 34 is provided with a ball bearing 45 that is adapted to the size of the reciprocating chute 33. The ball bearing 45 is driven to slide on the inner wall of the reciprocating chute 33 by the rotation of the shaft 5, so that the sliding sleeve 34 reciprocates on the outer wall of the shaft 5. The movable plate 36 is slidably connected to the right end of the inner wall of the sedimentation tank 11. A battering rod 37 is fixedly connected to the top of the movable plate 36. The top of the battering rod 37 is higher than the horizontal plane to impact the material floating on the horizontal plane. The left end of the movable plate 36 is connected to the bottom side of the sliding sleeve 34 through a fixed rod 35, so that the movable plate 36 is driven to slide horizontally in the sedimentation tank 11 by the left and right sliding of the sliding sleeve 34.

[0068] Specifically, the reciprocating chute 33 is a closed curved chute, which causes the ball bearing 45 to drive the sliding sleeve 34 to make uniform reciprocating motion when it rolls in the chute. Several impact rods 37 are provided and evenly distributed along the length of the movable plate 36. Their tops are about 5 to 10 cm above the water surface. When the movable plate 36 slides horizontally, the impact rods 37 repeatedly stir the PP material on the water surface like a "comb" to prevent them from sticking together due to the slight dissolution or stickiness of the surface after friction cleaning. This ensures that individual fragments can float naturally and thus be completely separated from the impurities that sink to the bottom.

[0069] Based on the aforementioned dry-wet combined recycling PP purification and modification device, as another aspect of this application, a dry-wet combined recycling PP purification and modification process includes the following steps:

[0070] Step 1: The recycled PP material to be purified is lifted to the top outlet by the auger conveyor 9 and falls into the feeding plate 8; the motor 3 drives the shaft 5 to rotate, and the bidirectional thread 12 at the right end of the shaft 5 drives the fixed frame 13 and the transmission plate 14 to slide back and forth. The transmission plate 14 pushes the roller 16 through the arc groove 15, so that the slide plate 18 slides laterally, thereby driving the baffle rod 19 and the contact plate 20 to move the material back and forth on the feeding plate 8, so that the stacked material is loosened and the internal debris is exposed; at the same time, the right end of the shaft 5 directly drives the turbine fan 21 to rotate and generate negative pressure, which removes light debris, dust, paper scraps and other materials on the surface of the material on the feeding plate 8 through the connecting box 22 and the two dust suction ports 23 on the left and right, so as to achieve dry pre-purification;

[0071] Step 2: After dry dust removal, the material falls from the left end of the feeding plate 8 into the rinsing tank 10, and water continuously enters the rinsing tank 10. When the transmission plate 14 slides back and forth, it pulls the upright 26 through the connecting rod 24, causing the disc 27 and the wing plate 28 to rotate back and forth in the rinsing tank 10. The stirring rod at the bottom of the wing plate 28 stirs the material to prevent material bridging and blockage, while forcing the material to fully contact with water, so that the surface of all PP fragments is wetted, in preparation for subsequent friction cleaning.

[0072] Step 3: The material enters the friction cleaning tank 4 from the bottom of the rinsing tank 10. The shaft 5 drives the spiral blades 6 to rotate, pushing the material from left to right. The blade spacing at the right discharge port is greater than that on the left to increase the rinsing and soaking time of the material on the right side. Under the agitation of the spiral blades 6, the material rubs violently against each other and against the tank wall, peeling off the oil, glue, mud and other impurities attached to the surface. The wastewater generated during cleaning is discharged into the wastewater tank 39 through the wastewater pipe.

[0073] Step 4: Disinfectant is injected into the sewage tank 39. The rotation of shaft 5 drives the upper part 41 of the stirring rod to rotate through the synchronous belt and synchronous pulley. Under the action of the tension spring, the ball bearings 7 on the lower part 42 of the stirring rod roll along the non-horizontal inclined surface of the bottom side of the limiting plate 40, so that the lower part 42 of the stirring rod continues to rise and fall vertically while rotating, thereby performing compound stirring of sewage and disinfectant, accelerating the flocculation and sedimentation of suspended solids, and improving the mixing effect.

[0074] Step 5: After friction cleaning, the material enters the sedimentation tank 11 from the left outlet of the friction cleaning tank 4. Impurities with a density greater than PP sink to the bottom of the tank. The left end of the shaft 5 drives the auger at the bottom of the sedimentation tank 11 to rotate via a chain and sprocket, conveying the sedimented debris to the left end and discharging it periodically through the drain valve. At the same time, the reciprocating slide chute 33 at the left end of the shaft 5 drives the sliding sleeve 34 to move back and forth through the ball bearing 45. The sliding sleeve 34 pulls the movable plate 36 and the impact rod 37 horizontally within the sedimentation tank 11 via the fixed rod 35. The impact rod 37 repeatedly collides with the PP material floating on the water surface to prevent them from sticking together or piling up due to the softening of the surface after friction cleaning, ensuring thorough density separation.

[0075] Step 6: The purified PP material floats on the water surface and moves with the water flow to the left end of the sedimentation tank 11. It is guided by the guide plate 38 at the outlet of the left end of the sedimentation tank 11 and discharged from the outlet to enter the next process.

[0076] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A dry-wet combined recycling PP purification and modification device, characterized in that, include: The base (1) has a motor (3) on its top and a friction cleaning tank (4) fixedly connected to the middle of the top of the base (1). The friction cleaning tank (4) is rotatably connected to a shaft (5). The shaft (5) is located on the middle of the outer wall inside the friction cleaning tank (4) and is fixedly connected to a spiral blade (6) to transport the material entering the friction cleaning tank (4) and drive the material to rub against each other inside. The shaft (5) passes through the friction cleaning tank (4) from front to back. The shaft (5) is connected to the motor (3) via a chain and sprocket. The right end of the outer wall of the shaft (5) is provided with a reciprocating drive assembly to drive the reciprocating drive assembly to move by rotating the shaft (5) driven by the motor (3). The right end of the shaft (5) is also connected with a dust collection assembly to remove debris from the unpurified material. The right side of the base (1) is also provided with an auger conveyor (9) to transport the material. A feeding plate (8) is fixedly connected to the top right end of the base (1). The left end of the feeding plate (8) is connected to the interior of the washing tank (10), and the right end of the feeding plate (8) is connected to the top discharge port of the auger conveyor (9). A turbulence-inducing component is provided on the outer wall of the feeding plate (8). The turbulence-inducing component is connected to the reciprocating drive component through a transmission plate (14) to turbulently swirl the material conveyed to the feeding plate (8) by the auger conveyor (9), so that the dust collection component can remove the debris covered by the material stack. The rinsing tank (10) is installed on the right side of the top of the friction cleaning tank (4). The rinsing tank (10) is equipped with an agitator. The top of the agitator is connected to the linkage component through a disc (27). The linkage component is connected to the top of the transmission plate (14). The transmission plate (14) is moved horizontally left and right by the reciprocating drive component, thereby driving the swing of the connecting rod (24) to drive the agitator to rotate, so as to agitate the material entering the rinsing tank (10), increase the contact area between the material and water and prevent material blockage. Wastewater tank (39) is located on the rear side of base (1). The wastewater tank (39) is connected to the interior of friction cleaning tank (4) through a wastewater pipe. The wastewater tank (39) is equipped with a lifting and stirring assembly. The lifting and stirring assembly is connected to disc (27) through a synchronous belt and synchronous wheel. The rotation of disc (27) drives the lifting and stirring assembly to vertically lift and stir the wastewater and disinfectant inside the wastewater tank (39) to increase the mixing effect. Sedimentation tank (11) is located on the left side of base (1). The bottom of the inner wall of sedimentation tank (11) is rotatably connected to an auger. The left end of the auger is connected to the left end of shaft (5) through a chain and sprocket. The shaft (5) rotates to drive the auger to rotate, thereby transporting the crushed material with a density different from the material that has settled to the bottom to the left end of sedimentation tank (11) and then discharging it through the drain valve at the bottom. The left end of the outer wall of shaft (5) is provided with a reciprocating collision component to collide with the material that has piled up or stuck together due to friction cleaning in sedimentation tank (11) and disperse it, thereby ensuring the sedimentation effect. Water storage tank (2) is located inside the base (1). The water storage tank (2) is connected to the middle of the friction cleaning tank (4) and the sewage tank (39) respectively through the diversion pipe (32).

2. The dry-wet combined recycling PP purification and modification device according to claim 1, characterized in that, The reciprocating drive assembly includes a bidirectional thread (12) on the right end of the outer wall of the shaft (5) and a limiting slide rod (25) fixedly connected to the top right end of the base (1). A fixing frame (13) is sleeved on the outside of the bidirectional thread (12). The top of the fixing frame (13) is fixedly connected to the bottom of the transmission plate (14). The two ends of the bottom of the fixing frame (13) are slidably engaged with the limiting slide rod (25) to achieve sliding limit of the fixing frame (13).

3. The dry-wet combined recycling PP purification and modification device according to claim 1, characterized in that, The dust collection assembly includes a turbine fan (21), a connecting housing (22), and a dust collection port (23). The turbine fan (21) is fixedly connected to the right end of the shaft (5) so that the turbine fan (21) can rotate by rotating the shaft (5). The connecting housing (22) is fixedly connected to the top right end of the base (1). The connecting housing (22) is connected to the turbine fan (21) through a duct. The dust collection port (23) is fixedly connected to the bottom left and right ends of the transmission plate (14). The dust collection ports (23) are all connected to the dust collection inlet end of the connecting housing (22) through a duct.

4. The dry-wet combined recycling PP purification and modification device according to claim 1, characterized in that, The turbulence-disrupting assembly includes a fixed bracket (17) fixedly connected to one side of the outer wall of the feeding plate (8). A sliding plate (18) slides horizontally inside the inner wall of the fixed bracket (17) via a spring. One end of the sliding plate (18) is rotatably connected to a roller (16). The roller (16) abuts against the inner wall of the transmission plate (14) on the side closest to it, and an arc groove (15) is provided on this side. The lateral sliding and limiting of the sliding plate (18) is achieved by the abutment of the inner arc surface of the arc groove (15) with the roller (16). A plurality of turbulence-disrupting rods (19) are fixedly connected to the bottom of the sliding plate (18) to drive its lateral movement and interfere with the flow of materials. A contact plate (20) is fixedly connected to the bottom of the turbulence-disrupting rod (19) to cooperate with the turbulence-disrupting rod (19) and move the bottom material.

5. The dry-wet combined recycling PP purification and modification device according to claim 1, characterized in that, The agitation assembly includes an annular groove (31) and multiple wing plates (28). The annular groove (31) is located at the top of the inner wall of the rinsing tank (10). The multiple wing plates (28) are fixedly connected to the outer side of the disc (27). The outer ends of the multiple wing plates (28) are rotatably connected to rollers (29) that abut against the inner wall of the annular groove (31), so that the disc (27) remains at the axis of the rinsing tank (10) while rotating. The outer bottom side of the wing plate (28) is also provided with a limiting ball (30) for supporting the end and abutting against the inner wall of the annular groove (31). The bottom sides of the disc (27) and the wing plates (28) are fixedly connected to stirring rods to directly contact and agitate the material.

6. The dry-wet combined recycling PP purification and modification device according to claim 1, characterized in that, The linkage component includes a pole (26) fixedly connected to one side of the top edge of the disc (27), and a connecting rod (24) rotatably connected to the outside of the pole (26), and the connecting rod (24) rotatably connected to the top of the transmission plate (14).

7. The dry-wet combined recycling PP purification and modification device according to claim 1, characterized in that, The lifting and stirring assembly includes an upper stirring rod (41) and a lower stirring rod (42) connected by a tension spring. The upper stirring rod (41) is rotatably connected to the top of the sewage tank (39) through a sealed bearing. The upper stirring rod (41) is fixedly connected to a transmission wheel on one side. An abutment rod (43) is fixedly connected to the middle of the outer side of the lower stirring rod (42). A ball bearing (7) is provided on the top of the abutment rod (43). A limit plate (40) is fixedly connected to the top of the inner wall of the sewage tank (39). The bottom side of the limit plate (40) is a non-horizontal inclined surface, so as to cooperate with the ball bearing (7) and the tension spring to make the upper stirring rod (41) drive the lower stirring rod (42) to rotate while the lower stirring rod (42) continuously abuts against the outer side of the ball bearing (7) through the inclined surface, thereby making the lower stirring rod (42) move vertically up and down.

8. The dry-wet combined recycling PP purification and modification device according to claim 1, characterized in that, The reciprocating collision assembly includes a reciprocating slide groove (33) and a U-shaped movable plate (36). The reciprocating slide groove (33) is located on the left end of the outer wall of the shaft (5). A sliding sleeve (34) is fitted on the outer side of the reciprocating slide groove (33). The inner wall of the sliding sleeve (34) is provided with a ball bearing (45) that matches the size of the reciprocating slide groove (33). The rotation of the shaft (5) drives the ball bearing (45) to slide on the inner wall of the reciprocating slide groove (33), thereby causing the sliding sleeve (34) to move on the shaft (5). The outer wall of the sedimentation tank moves back and forth. The movable plate (36) is slidably connected to the right end of the inner wall of the sedimentation tank (11). The top of the movable plate (36) is fixedly connected to a battering rod (37). The top of the battering rod (37) is higher than the horizontal plane to impact the material floating on the horizontal plane. The left end of the movable plate (36) is connected to the bottom side of the sliding sleeve (34) through a fixed rod (35) so that the movable plate (36) can slide horizontally in the sedimentation tank (11) by sliding the sliding sleeve (34) left and right.

9. The dry-wet combined recycling PP purification and modification device according to claim 1, characterized in that, The inner wall of the sewage tank (39) is provided with a baffle (44) to block the splashing caused by the lifting and stirring mechanism. The outlet of the sedimentation tank (11) on the left side is also provided with a guide plate (38) to guide the floating material. The blade spacing of the spiral blade (6) near the discharge port is greater than the blade spacing on the left side to increase the rinsing and soaking time of the material on the right side.

10. The dry-wet combined recycling PP purification and modification process according to claim 1, using the dry-wet combined recycling PP purification and modification device according to any one of claims 1 to 9, characterized in that, Includes the following steps: Step 1: The recycled PP material to be purified is lifted to the top outlet by the screw conveyor (9) and falls into the feeding plate (8); the motor (3) drives the shaft (5) to rotate, and the bidirectional thread (12) on the right end of the shaft (5) drives the fixed frame (13) and the transmission plate (14) to slide back and forth. The transmission plate (14) pushes the roller (16) through the arc groove (15), so that the slide plate (18) slides laterally, thereby driving the baffle rod (19) and the contact plate (20) to move the material back and forth on the feeding plate (8), so that the stacked material is loosened and the internal debris is exposed; at the same time, the right end of the shaft (5) directly drives the turbine fan (21) to rotate to generate negative pressure, and through the connecting box (22) and the two dust suction ports (23) on the left and right, the light debris (dust, paper scraps, etc.) on the surface of the material on the feeding plate (8) is sucked away, realizing dry pre-purification; Step 2: After dry dust removal, the material falls from the left end of the feeding plate (8) into the rinsing tank (10), and water continuously enters the rinsing tank (10). When the transmission plate (14) slides back and forth, it pulls the upright (26) through the connecting rod (24), so that the disc (27) and the wing plate (28) rotate back and forth in the rinsing tank (10). The stirring rod at the bottom of the wing plate (28) stirs the material to prevent the material from bridging and clogging, and at the same time forces the material to fully contact the water, so that the surface of all PP fragments is wetted, in preparation for subsequent friction cleaning. Step 3: The material enters the friction cleaning tank (4) from the bottom of the rinsing tank (10). The shaft (5) drives the spiral blades (6) to rotate, pushing the material from left to right. The blade spacing at the right discharge port is greater than that on the left to increase the rinsing and soaking time of the material on the right side. Under the agitation of the spiral blades (6), the material rubs violently against each other and against the tank wall, peeling off the oil, glue, mud and other impurities attached to the surface. The wastewater generated during cleaning is discharged into the wastewater tank (39) through the wastewater pipe. Step 4: Disinfectant is injected into the sewage tank (39). The rotation of the shaft (5) drives the upper part (41) of the stirring rod to rotate through the synchronous belt and synchronous pulley. Under the action of the tension spring, the ball bearings (7) on the lower part (42) of the stirring rod roll along the non-horizontal inclined surface of the bottom side of the limiting plate (40), so that the lower part (42) of the stirring rod continues to rise and fall vertically while rotating, thereby performing compound stirring of sewage and drugs, accelerating the flocculation and sedimentation of suspended solids, and improving the mixing effect. Step 5: After friction cleaning, the material enters the sedimentation tank (11) from the left outlet of the friction cleaning tank (4). Impurities with a density greater than PP sink to the bottom of the tank. The left end of the shaft (5) drives the auger at the bottom of the sedimentation tank (11) to rotate through the chain sprocket, which transports the bottom debris to the left end and discharges it periodically through the drain valve. At the same time, the reciprocating slide groove (33) at the left end of the shaft (5) drives the sliding sleeve (34) to move back and forth through the ball bearing (45). The sliding sleeve (34) pulls the movable plate (36) and the impact rod (37) to slide horizontally in the sedimentation tank (11) through the fixed rod (35). The impact rod (37) repeatedly collides with the PP material floating on the water surface to prevent them from sticking together or piling up due to the softening of the surface after friction cleaning, and to ensure thorough density separation. Step 6: The purified PP material floats on the water surface and moves with the water flow to the left end of the sedimentation tank (11). It is guided by the guide plate (38) at the outlet of the left end of the sedimentation tank (11) and discharged from the outlet to enter the next process.

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