A waste plastic cleaning and sorting integrated processing equipment

Abstract

The utility model relates to waste plastics cleaning technical field discloses a kind of waste plastics cleaning and sorting integrated processing equipment, including fixed bottom plate, and washing assembly is provided on fixed bottom plate, and washing assembly includes two protective boxes, and the upper surface of two protective boxes is fixedly connected on fixed bottom plate, and two protective boxes are correspondingly set left and right, by setting washing assembly, two-stage cleaning mode of initial washing hot washing is used, different impurities are removed pertinently: initial washing stage, cleaning tank enters initial washing groove, second drive motor drives stirring frame to overturn waste plastics, arc surface is attached to tank wall to prevent accumulation, prevent scratching, tank wall through-hole makes clean water freely in and out, through water flow and stirring synergies remove silt, dust and other easy-to-shed impurities;Hot washing stage, cleaning tank moves to hot washing groove, and electric heating pipe heats water temperature to 60-80 DEG C, hot water accelerates oil stain dissolution, cooperates with stirring and through-hole water flow circulation, thoroughly washes surface stubborn stain.

Description

Technical Field

[0001] This utility model relates to the field of waste plastic cleaning technology, specifically to an integrated processing equipment for cleaning and sorting waste plastics. Background Technology

[0002] Waste plastic recycling is an important part of resource recycling. The recycling process requires two core steps: cleaning to remove impurities and sorting to separate materials and colors in order to obtain high-purity recycled plastics.

[0003] Currently, existing waste plastic processing equipment in the industry often adopts a single cleaning mode of cold washing or hot washing. Because the cleaning method is crude, cold washing can only rinse away easily detachable impurities, resulting in incomplete removal of stubborn stains such as oil and adhesives. Residual stains will affect the subsequent sorting accuracy and the quality of recycled plastics. While hot washing can improve the removal effect of stubborn stains, it is energy-intensive and wasteful for impurities that can be cleaned with only cold water, which does not meet the requirements of energy conservation. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides an integrated waste plastic cleaning and sorting processing equipment. It solves the problem that current waste plastic processing equipment in the industry often adopts a single cleaning mode of cold washing or hot washing. Because the cleaning method is crude, cold washing can only rinse away easily detachable impurities, resulting in incomplete removal of stubborn stains such as oil and adhesives. Residual stains will affect the subsequent sorting accuracy and the quality of recycled plastics. While hot washing can improve the removal effect of stubborn stains, it is energy-intensive for impurities that can be cleaned with only cold water, which does not meet the requirements of energy conservation.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an integrated processing equipment for cleaning and sorting waste plastics, including a fixed base plate, a cleaning component on the fixed base plate, the cleaning component including two protective boxes, both of which are fixedly connected to the upper surface of the fixed base plate, and the two protective boxes are arranged in a left-right correspondence. The upper surface of both protective boxes is provided with a sliding groove that communicates with the interior, and the inner wall of both sliding grooves is slidably connected with a T-shaped moving plate. Each of the two protective boxes has a servo motor fixedly installed on its front surface. The output ends of the two servo motors are fixedly connected to threaded rods. The rear ends of the two threaded rods rotate through the interior of the protective box and are rotatably connected to the inner wall of the corresponding protective box. Among them, the outer walls of the two threaded rods are threaded with movable sleeves, and the lower ends of the two T-shaped movable plates are fixedly connected to the upper surfaces of the corresponding movable sleeves. Hydraulic cylinders are fixedly installed on the upper surfaces of the two T-shaped movable plates. L-shaped fixed plates are fixedly connected to the telescopic ends of the two hydraulic cylinders. The first drive motor mounting box is fixedly connected to the opposite surfaces of the two L-shaped fixed plates. The first drive motor is fixedly installed inside the two first drive motor mounting boxes. The output ends of the two first drive motors are fixedly connected to drive shafts. The opposite ends of the two drive shafts rotate through the outer surface of the corresponding L-shaped fixing plates. The opposite ends of the two drive shafts are fixedly connected to a second drive motor mounting box, and the two second drive motor mounting boxes are fixedly installed inside each second drive motor mounting box; Among them, the two second drive motor mounting boxes are fixedly connected to the opposite sides of the cleaning tank, and the outer surface of the cleaning tank is provided with multiple through holes that communicate with its interior. The cleaning box is fixedly connected to the upper surface of the fixed base plate, and the cleaning box is located on the opposite side of the two protective boxes. The cleaning tank is equipped with a partition in the middle, which divides the interior of the cleaning tank into a pre-wash tank and a hot wash tank. The pre-wash tank is located at the rear, and the hot wash tank is equipped with an electric heating element. The front and rear surfaces of the cleaning tank are each fixedly connected to two installation pipes that communicate with its interior. The two upper installation pipes are water inlet pipes, and the two lower installation pipes are water outlet pipes.

[0006] Preferably, the inner left and right walls of the cleaning tank are rotatably connected to connecting rods, and the left and right ends of the connecting rods respectively rotatably penetrate into the interior of the corresponding second drive motor mounting box, and are respectively fixedly connected to the output end of the corresponding second drive motor. The front, rear, and lower surfaces of the connecting rod are all fixedly connected to a stirring frame. The end faces of the three stirring frames are all arc-shaped, and the arc-shaped surfaces of the three stirring frames are all in contact with the inner wall of the cleaning tank. A stirring rod is fixedly connected to the stirring frame. The upper surface of the cleaning tank is fixedly connected to a rectangular feed box that communicates with its interior.

[0007] Preferably, a filter box is fixedly connected to the upper surface of the fixed base plate, and the filter box is located in front of the cleaning box; The filter box has rectangular grooves on both the front and rear surfaces that communicate with its interior. A drain pipe is installed on the right side of the filter box, and a drain valve is installed on the drain pipe. An inclined screen plate is installed inside the filter box. The front and rear ends of the inclined screen plate pass through the inner walls of the corresponding rectangular grooves. The inclined screen plate is inclined forward. Two vibration motors are fixedly installed on the lower surface of the inclined screen plate. Two auxiliary springs are fixedly connected to the front and rear surfaces of the filter box. The upper ends of the four auxiliary springs are fixedly connected to the inclined screen plate. Each of the four auxiliary springs has an auxiliary telescopic rod inside. The lower ends of the four auxiliary telescopic rods are fixedly connected to the corresponding fixed plates, and the upper ends of the four auxiliary telescopic rods are fixedly connected to the inclined screen plate.

[0008] Preferably, the front surface of the filter box is provided with a first conveying mechanism, which is located below the inclined screen plate; The rear surface of the fixed base plate is equipped with a second conveying mechanism.

[0009] Preferably, the stirring rack has a serrated shape.

[0010] Preferably, the stirring rod can be a cross-shaped stirring rod and be horizontally connected to the stirring frame.

[0011] Compared with the prior art, this utility model provides an integrated processing equipment for washing and sorting waste plastics, which has the following beneficial effects: By setting up a cleaning component that employs a two-stage cleaning mode of initial washing and hot washing, different impurities are targeted for removal: In the initial washing stage, the cleaning tank enters the initial washing tank, and the second drive motor drives the stirring frame to agitate the waste plastic. The curved surface fits against the tank wall to prevent accumulation and scratches, and the open holes in the tank wall allow clean water to freely enter and exit. Through the combined action of water flow and stirring, easily detachable impurities such as mud and dust are removed. In the hot washing stage, the cleaning tank is moved to the hot washing tank, and the electric heating element heats the water to 60-80℃. The hot water accelerates the dissolution of oil stains, and with the stirring and water circulation through the open holes, stubborn stains on the surface are thoroughly cleaned. This solves the problem of incomplete oil stain removal in traditional cold washing and achieves comprehensive cleaning from easily detachable impurities to stubborn stains. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of the integrated waste plastic washing and sorting processing equipment of this utility model; Figure 2 This is a schematic diagram of the movable sleeve of this utility model; Figure 3 This is a schematic diagram of the interior of the cleaning tank of this utility model; Figure 4 This is a schematic diagram showing the position of the cleaning tank during feeding in this utility model; Figure 5 This is a schematic diagram showing the position of the cleaning tank during material discharge in this utility model; Figure 6 This is a schematic diagram of the replaceable mixing rack of this utility model; Figure 7 This is a schematic diagram of the replaceable stirring rod of this utility model.

[0013] In the diagram: 1. Fixed base plate; 2. Protective box; 3. T-shaped moving plate; 4. Cleaning tank; 5. Slide chute; 6. Servo motor; 7. Filter box; 8. Rectangular trough; 9. Inclined screen plate; 10. Partition plate; 11. Hydraulic cylinder; 12. L-shaped fixed plate; 13. Cleaning tank; 14. Moving sleeve; 15. Threaded rod; 16. First drive motor mounting box; 17. Second drive motor mounting box; 18. Stirring rod; 19. Connecting rod; 20. Stirring frame; 21. Fixed plate; 22. Vibrating motor; 23. Auxiliary spring; 24. First conveying mechanism; 25. Hot washing tank; 26. Initial washing tank; 27. Second conveying mechanism; 28. Rectangular feed box; 29. ​​Mounting pipe; 30. Electric heating tube. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] Please see Figure 1-7 This utility model provides a new technical solution: an integrated processing equipment for cleaning and sorting waste plastics, including a fixed base plate 1, a cleaning component on the fixed base plate 1, the cleaning component including two protective boxes 2, both of which are fixedly connected to the upper surface of the fixed base plate 1, and the two protective boxes 2 are arranged in a left-right correspondence. Among them, the upper surface of both protective boxes 2 is provided with a sliding groove 5 that communicates with its interior, and the inner wall of both sliding grooves 5 is slidably connected with a T-shaped moving plate 3. Among them, servo motors 6 are fixedly installed on the front surface of the two protective boxes 2, and threaded rods 15 are fixedly connected to the output ends of the two servo motors 6. The rear ends of the two threaded rods 15 are respectively rotatably inserted into the interior of the protective box 2 and respectively rotatably connected to the inner wall of the corresponding protective box 2. Among them, the outer walls of the two threaded rods 15 are threaded with movable sleeves 14, and the lower ends of the two T-shaped movable plates 3 are fixedly connected to the upper surfaces of the corresponding movable sleeves 14. Hydraulic cylinders 11 are fixedly installed on the upper surfaces of the two T-shaped movable plates 3. The telescopic ends of the two hydraulic cylinders 11 are fixedly connected to L-shaped fixed plates 12. The opposing surfaces of the two L-shaped fixed plates 12 are fixedly connected to the first drive motor mounting box 16. The first drive motor is fixedly installed inside the two first drive motor mounting boxes 16. The output ends of the two first drive motors are fixedly connected to drive shafts. The opposite ends of the two drive shafts rotate through the outer surface of the corresponding L-shaped fixing plate 12. The opposite ends of the two drive shafts are fixedly connected to the second drive motor mounting box 17, and the second drive motor is fixedly installed inside the two second drive motor mounting boxes 17. Among them, the two second drive motor mounting boxes 17 are fixedly connected to the opposite sides of the cleaning tank 13, and the outer surface of the cleaning tank 13 is provided with a number of through holes communicating with its interior. Among them, a cleaning box 4 is fixedly connected to the upper surface of the fixed base plate 1, and the cleaning box 4 is located on the opposite side of the two protective boxes 2; The cleaning tank 4 is fixedly connected to a partition 10 in the middle position inside. The partition 10 divides the interior of the cleaning tank 4 into a pre-washing tank 26 and a hot washing tank 25. The pre-washing tank 26 is located on the rear side, and the hot washing tank 25 is equipped with an electric heating tube 30. The front and rear surfaces of the cleaning tank 4 are each fixedly connected to two installation pipes 29 that communicate with its interior. The two upper installation pipes 29 are water inlet pipes, and the two lower installation pipes 29 are water outlet pipes.

[0016] Preferably, the inner walls of the cleaning tank 13 are rotatably connected to connecting rods 19, and the left and right ends of the connecting rods 19 respectively rotatably penetrate into the interior of the corresponding second drive motor mounting box 17, and are respectively fixedly connected to the output end of the corresponding second drive motor. The front, rear, and lower surfaces of the connecting rod 19 are all fixedly connected to the stirring rack 20. The end faces of the three stirring racks 20 are all arc-shaped, and the arc-shaped surfaces of the three stirring racks 20 are all in contact with the inner wall of the cleaning tank 13. The stirring rack 20 is fixedly connected to the stirring rod 18 (which is longitudinal or transverse). The upper surface of the cleaning tank 13 is fixedly connected to a rectangular feed box 28 that communicates with its interior.

[0017] Preferably, a filter box 7 is fixedly connected to the upper surface of the fixed base plate 1, and the filter box 7 is located in front of the cleaning box 4; The filter box 7 has rectangular grooves 8 on its front and rear surfaces that communicate with its interior. A drain pipe is provided on the right side of the filter box 7, and a drain valve is provided on the drain pipe. An inclined screen plate 9 is provided inside the filter box 7. The front and rear ends of the inclined screen plate 9 extend through the inner walls of the corresponding rectangular grooves 8. The inclined screen plate 9 is inclined forward. Two vibration motors 22 are fixedly installed on the lower surface of the inclined screen plate 9. Among them, two auxiliary springs 23 are fixedly connected to the front and rear surfaces of the filter box 7, the upper ends of the four auxiliary springs 23 are fixedly connected to the inclined screen plate 9, and the interior of the four auxiliary springs 23 is provided with auxiliary telescopic rods. The lower ends of the four auxiliary telescopic rods are fixedly connected to the corresponding fixed plates 21, and the upper ends of the four auxiliary telescopic rods are fixedly connected to the inclined screen plate 9.

[0018] Preferably, the front surface of the filter box 7 is provided with a first conveying mechanism 24, which is located below the inclined screen plate 9; The rear surface of the fixed base plate 1 is provided with a second conveying mechanism 27.

[0019] Preferably, a sorting assembly is provided on the front side of the first conveying mechanism 24, comprising an electrostatic separator, a near-infrared optical separator, and a color sorter. The input end of the electrostatic separator is located below the first conveying mechanism 24, and the output end is connected to the near-infrared optical separator via a conveyor belt. Among them, the near-infrared light sorter and the color sorter are connected in series. The spectral detection range of the near-infrared light sorter is 800-1700nm, and the resolution of the color sorter is ≥2048 pixels.

[0020] Preferably, the stirring rack 20 can be a serrated stirring rack (connected longitudinally to the stirring rod 18, such as...) Figure 6 As shown, the stirring rod 18 is connected to the connecting rod 19.

[0021] Preferably, the stirring rod 18 can be a cross-shaped stirring rod (parallel to the connecting rod 19) and is laterally connected to the stirring frame 20 (e.g., Figure 7 (As shown).

[0022] Structural Description: Servo motor 6: The output end of servo motor 6 is fixedly connected to threaded rod 15; it provides power for the station switching of cleaning tank 13, drives threaded rod 15 to rotate, and enables the cleaning tank to move precisely above the primary washing tank 26, the hot washing tank 25, and the inclined screen plate 9.

[0023] Threaded rod 15: The rear end of the threaded rod 15 is rotatably connected to the inner wall of the protective box 2, and the outer wall is threadedly fitted with the movable sleeve 14; as the servo motor 6 rotates, it drives the movable sleeve 14 to slide along the length direction, transmitting the power for switching work positions.

[0024] Moving sleeve 14: The upper surface of the moving sleeve 14 is fixedly connected to the T-shaped moving plate 3; as the threaded rod 15 slides, it drives the T-shaped moving plate 3 to move synchronously, thereby pulling the cleaning tank 13 to move as a whole.

[0025] T-shaped moving plate 3: The lower end of the T-shaped moving plate 3 is slidably connected in the slide groove 5 of the protective box 2, and the upper surface is fixedly installed with a hydraulic cylinder 11; it slides vertically along the slide groove 5 to provide a stable moving trajectory for the cleaning tank 13, prevent lateral deviation, and at the same time support the hydraulic cylinder 11 and subsequent cleaning components.

[0026] Hydraulic cylinder 11: The telescopic end of hydraulic cylinder 11 is fixedly connected to L-shaped fixing plate 12. Hydraulic cylinder 11 drives L-shaped fixing plate 12 and cleaning tank 13 to move up and down through telescopic end, so as to realize the action of cleaning tank entering and exiting the initial washing tank 26 and hot washing tank 25.

[0027] L-shaped fixing plates 12: The opposite surfaces of the two L-shaped fixing plates 12 are fixedly connected to the first drive motor mounting box 16, and the opposite surfaces are connected to the second drive motor mounting box 17 through the drive shaft. The two L-shaped fixing plates 12 are used to support the cleaning tank 13 and the drive components, and connect the lifting and tilting actions of the cleaning tank.

[0028] First drive motor mounting box 16: The first drive motor is fixedly installed inside the first drive motor mounting box 16. The output end of the first drive motor is fixedly connected to the drive shaft, which provides power for the rotation of the cleaning tank 13, drives the drive shaft and the second drive motor mounting box 17 to rotate, and realizes the unloading of the cleaning tank.

[0029] Second drive motor mounting box 17: Two second drive motor mounting boxes 17 are fixedly connected to each other with a cleaning tank 13. The second drive motor is fixedly installed inside the second drive motor mounting box 17, and the output end of the second drive motor is fixedly connected to the connecting rod 19.

[0030] Cleaning tank 13: Multiple through holes are provided on the outer surface of the cleaning tank 13. A rectangular feed box 28 is fixedly connected to the upper surface of the cleaning tank 13. A connecting rod 19 is rotatably connected inside the cleaning tank 13. The cleaning tank 13 is used to hold waste plastic to be cleaned. The through holes allow the cleaning water to enter and exit freely. The rectangular feed box 28 realizes feeding and unloading. The connecting rod 19 drives the stirring component to move.

[0031] Connecting rod 19: The left and right ends of the connecting rod 19 pass through the second drive motor mounting box 17 and are fixed to the output end of the second drive motor. The front, rear and lower surfaces of the connecting rod 19 are fixedly connected to the stirring frame 20. The connecting rod 19 is used to transmit the power of the second drive motor and drive the stirring components to rotate synchronously.

[0032] Stirring rack 20: The arc-shaped surface of the stirring rack 20 fits against the inner wall of the cleaning tank 13. When the stirring rack 20 rotates, it turns the waste plastic in the tank, preventing it from accumulating at the bottom of the tank and causing uneven cleaning. The arc-shaped structure can prevent scratching the plastic surface and ensure the integrity of the plastic.

[0033] Stirring rod 18: Stirring rod 18 is fixedly connected to the corresponding stirring frame 20. Stirring rod 18 is used to assist stirring frame 20 to enhance stirring effect, increase contact area between plastic and washing water, and accelerate the removal of impurities.

[0034] Cleaning tank 4: The cleaning tank 4 is located on the opposite side of the two protective tanks 2. The interior of the cleaning tank 4 is divided into a pre-washing tank 26 and a hot washing tank 25 by a partition 10. The hot washing tank 25 is equipped with an electric heating tube 30. The pre-washing tank 26 is used for preliminary cleaning with clean water. The hot washing tank 25 raises the water temperature to 60-80℃ through the electric heating tube 30 to facilitate the removal of oil stains. The inlet and outlet pipes realize the circulation and replenishment of cleaning water.

[0035] Partition 10: Partition 10 is fixed in the middle of the inside of the cleaning tank 4. Partition 10 divides the cleaning tank into a pre-wash tank 26 and a hot wash tank 25 to achieve graded cleaning of pre-wash and hot wash, and to remove different impurities in a targeted manner.

[0036] Filter box 7: Filter box 7 is fixed on the upper surface of fixed base plate 1. Filter box 7 is located in front of cleaning box 4. Rectangular grooves 8 are opened on the front and rear surfaces of filter box 7. Inclined screen plate 9 is set inside filter box 7. Auxiliary spring 23 is fixedly connected to the front and rear surfaces of filter box 7. Filter box 7 provides installation space for inclined screen plate 9. Rectangular groove 8 allows inclined screen plate 9 to vibrate and slide. Auxiliary spring 23 buffers vibration impact.

[0037] Inclined screen plate 9: The rectangular groove 8 of the filter box 7 passes through the front and rear ends of the inclined screen plate 9. The inclined screen plate 9 is set to tilt forward. Two vibration motors 22 are fixedly installed on the lower surface. The lower surface of the inclined screen plate 9 is fixedly connected to four auxiliary springs 23. The filter holes on the inclined screen plate 9 are used to filter residual moisture on the plastic surface. The tilt angle and vibration work together to make the plastic slide forward, realizing the dual functions of dehydration and conveying.

[0038] Vibration motor 22: Vibration motor 22 is fixed on the lower surface of inclined screen plate 9. After the vibration motor 22 is started, it drives the inclined screen plate 9 to sway slightly along the rectangular groove 8 to enhance the dewatering effect, and at the same time pushes the plastic to move towards the first conveying mechanism 24.

[0039] Auxiliary spring 23: An auxiliary telescopic rod is set inside the auxiliary spring 23. The lower end of the auxiliary spring 23 is fixed to the fixed plate 21, and the upper end of the auxiliary spring 23 is fixedly connected to the inclined screen plate 9. The auxiliary spring 23 can be located on both sides of the vibrating motor 22 to buffer the impact force generated by the vibrating motor 22 and protect the structure of the inclined screen plate 9. The auxiliary telescopic rod limits the vibration direction of the inclined screen plate to ensure stable dewatering.

[0040] Furthermore, when using this integrated waste plastic washing and sorting processing equipment, the first conveying mechanism 24 and the second conveying mechanism 27 both run from back to front, and the second conveying mechanism 27 is used for feeding materials; In the initial state, the rectangular feed box 28 on the cleaning tank 13 is located below the discharge end of the second conveying mechanism 27; The second conveying mechanism 27 is activated, which moves the waste plastic to be cleaned forward and transports it to the rectangular feed box 28 on the cleaning tank 13. The waste plastic falls into the rectangular feed box 28 under gravity and then enters the cleaning tank 13. Once the waste plastic in the cleaning tank 13 reaches the preset loading amount, such as 2 / 3 of the tank volume, to prevent overflow during cleaning, the second conveying mechanism 27 is turned off, completing the loading process and preparing for subsequent cleaning. The servo motors 6 on the front surfaces of the two protective boxes 2 are activated. The output ends of the servo motors 6 drive the threaded rod 15 to rotate along the inner wall of the protective box 2. The movable sleeve 14, which is threaded onto the outer wall of the threaded rod 15, moves forward synchronously along its length as the threaded rod 15 rotates. The movable sleeve 14 drives the upper T-shaped movable plate 3 to slide along the inner wall of the slide groove 5 of the protective box 2. The slide groove 5 provides vertical guidance for the T-shaped movable plate 3 to prevent lateral deviation. The T-shaped movable plate 3 drives the L-shaped fixed plate 12 on the upper surface, the second drive motor mounting box 17, and the cleaning tank 13 to move forward as a whole until they are above the initial washing tank 26 on the cleaning tank 4. Then, two hydraulic cylinders 11 are activated. The telescopic ends of the two hydraulic cylinders 11 drive the two L-shaped fixed plates 12 to move downward, so that the cleaning tank 13 enters the interior of the initial washing tank 26. The second drive motor inside the second drive motor mounting box 17 is started. The second drive motor drives the connecting rod 19 to rotate along the inner wall of the cleaning tank 13. The connecting rod 19 drives the stirring rack 20 on the front, rear and lower surfaces to rotate synchronously. The arc-shaped surface of the stirring rack 20 is in close contact with the inner wall of the cleaning tank 13. When rotating, it can turn over the waste plastic in the tank to avoid the plastic from accumulating at the bottom of the tank and causing uneven cleaning. At the same time, the arc-shaped structure can avoid scratching the plastic surface. Multiple through holes on the outer wall of the cleaning tank 13 allow the clean water in the initial washing tank 26 to freely enter and exit the tank. Through the synergistic effect of water flow and stirring, the mud, sand, dust and other easily detachable impurities attached to the surface of the waste plastic are removed, and the initial cleaning is completed. After the initial wash is completed, two hydraulic cylinders 11 are started to move two L-shaped fixing plates 12 upward. Then, the servo motor 6 is started again to move the cleaning tank 13 forward to the top of the hot washing tank 25 of the cleaning box 4. Then, two hydraulic cylinders 11 are started again to move the two L-shaped fixing plates 12 downward, so that the cleaning tank 13 enters the interior of the hot washing tank 25. The electric heating element 30 inside the hot washing tank 25 heats the water to 60-80℃, which is suitable for removing oil stains and adhering impurities from the surface of waste plastics. The second drive motor is repeatedly started, and the stirring rack 20 continues to turn the waste plastics. The hot water can accelerate the dissolution of oil stains, and the through hole allows hot water to circulate in and out of the tank, thoroughly cleaning stubborn stains on the plastic surface and solving the problem of incomplete cleaning by traditional cold washing. After the hot washing is completed, the two hydraulic cylinders 11 are started again to drive the cleaning tank 13 out of the hot washing tank 25 through the two L-shaped fixing plates 12. Then, the servo motor 6 is started again, driving the cleaning tank 13 forward to above the inclined screen plate; Among them, the front of the filter box 7 is the feeding area and the rear is the discharging area; The process involves activating the first drive motor inside the first drive motor mounting box 16 on the two L-shaped fixed plates 12. The first drive motor drives the drive shaft and the second drive motor mounting box 17 to rotate synchronously, thereby causing the cleaning tank 13 to rotate around the drive shaft axis. The waste plastic cleaned in the cleaning tank 13 is poured into the inclined screen plate 9 of the filter box 7 below through the rectangular feed box 28 under the action of rotation. After the pouring is completed, the first drive motor drives the cleaning tank 13 to reset, preparing for the next round of cleaning. The two vibration motors 22 on the lower surface of the inclined screen plate 9 are activated. Under the action of vibration, the inclined screen plate 9 sways slightly along the rectangular groove 8. At the same time, its forward tilt angle works in conjunction with the vibration to make the waste plastic slide forward along the inclined screen plate 9. The filter holes of the inclined screen plate 9 can filter the residual moisture on the surface of the plastic to the bottom of the filter box 7. The moisture can be discharged through the drain pipe to avoid moisture being carried into the subsequent sorting process and causing equipment failure. The sliding waste plastic finally falls into the first conveying mechanism 24, which transports the dehydrated waste plastic forward to the sorting component. The first conveying mechanism 24 transports waste plastics to the input end of the electrostatic separator. The electrostatic separator applies a high-voltage electric field to separate waste plastics of different materials, such as PP, PE, and PVC, due to differences in their electrical charge. Positively charged and negatively charged plastics fall onto different conveyor belts, thus initially achieving material sorting. Subsequently, the pre-sorted plastics enter the near-infrared optical separator via the conveyor belt. The near-infrared optical separator uses an 800-1700nm spectral detection range to analyze the molecular structure of the plastics and accurately identify different materials, such as distinguishing between PE and PP. It then separates missorted plastics again, improving sorting accuracy. Finally, the plastics enter the color sorter. The color sorter uses a high-resolution camera with ≥2048 pixels to capture color differences in the plastics and separates plastics of different colors, such as white, black, and multicolored, completing the final sorting. The sorted plastics are then transported to the corresponding finished product collection areas. The system employs a two-stage cleaning process—initial washing and hot washing—to target and remove different impurities. In the initial washing stage, the cleaning tank 13 enters the initial washing tank 26. A second drive motor drives the stirring frame 20 to agitate the waste plastic. The curved surface conforms to the tank wall to prevent accumulation and scratches, while the open holes in the tank wall allow clean water to freely enter and exit. The combined action of water flow and stirring removes easily detachable impurities such as mud and dust. In the hot washing stage, the cleaning tank 13 moves to the hot washing tank 25. An electric heating element 30 heats the water to 60-80℃. The hot water accelerates the dissolution of oil stains, and combined with stirring and water circulation through the open holes, it thoroughly cleans stubborn stains on the surface, solving the problem of incomplete oil removal in traditional cold washing and achieving comprehensive cleaning from easily detachable impurities to stubborn stains.

[0041] Example 1: Replacing the original mixing rack with a serrated mixing rack 20 like Figure 6 As shown A waste plastic recycling station processes waste plastics with stubborn impurities, such as PP plastic fragments with paint residue and industrial adhesive stains. The original mixing rack 20, due to its smooth curved surface, revealed core problems during cleaning: First, the smooth curved surface has insufficient "scraping force" for stubborn impurities. Impurities cannot be removed by water flow alone, requiring extended cleaning time, and some impurities remain, which can easily contaminate qualified plastics during subsequent sorting. Second, the contact between the curved surface and the plastic is surface contact, which does not cover impurities in the concave areas, forming cleaning dead corners, such as adhesive stains on the edges of plastic fragments that cannot be cleaned. Third, to enhance the cleaning effect, the mixing speed needs to be increased, which can easily cause plastic fragments to collide with each other and cause scratches, affecting the appearance quality of recycled plastics. At this time, the original mixing rack 20 is replaced with a serrated mixing rack. The plate body retains the fixed connection with the connecting rod 19. The upper and lower surfaces are integrally formed with a row of rounded serrations, and the edges of the serrations are treated with R1 rounded corners to prevent scratching the plastic. Rectangular grooves are evenly opened on the plate body, and the whole still fits the inner wall of the cleaning tank 13. The rounded serrations can gently scrape away stubborn impurities on the plastic surface, such as paint and glue stains, without relying on long-term water rinsing, significantly improving the impurity removal rate; the cleaning time is shortened from the original 30 minutes, and the amount of impurity residue is greatly reduced, so there is no impurity contamination during subsequent sorting, the purity of qualified plastics is improved, and no secondary cleaning is required; The rectangular grooves on the plate allow cleaning water to flow freely, and the water flow can penetrate deep into the plastic recesses or edge gaps, covering the cleaning blind spots of the original concave frame; the glue stains on the edges of plastic fragments and the residue in the recesses can be removed by the water flow and the saw teeth working together, without the problem of incomplete cleaning in some areas, and is suitable for the comprehensive cleaning needs of stubborn impurities and waste plastics.

[0042] Example 2: Replacing the original stirring rod 18 with a rotatable cross-shaped stirring rod like Figure 7 As shown A recycling plant processes mixed waste plastics, including plastic film, pipe fragments, and plastic bottle caps. The original stirring rod 18 was a fixed structure, which had obvious problems during cleaning: First, the hexagonal rod was rigidly fixed and could not effectively disperse the wrapped plastic film, easily forming film clumps. The plastic inside the clumps could not come into contact with the cleaning water, resulting in internal impurities remaining. Second, the stirring of large pipe fragments was only point contact, and the impurities on the pipe surface were only partially cleaned, resulting in large-area uneven cleaning. Third, when the mixed plastics were squeezed together, the hexagonal rod easily pressed the film into the gaps in the pipes, forming mixed clumps that were difficult to separate. Subsequent sorting required manual disassembly, increasing labor time. At this point, the original stirring rod 18 was replaced with a rotatable cross stirring rod. The two ends of the rod were rotatably connected to the inner wall of the stirring frame 20 through bearings, retaining the original installation position. Four flexible stirring plates arranged in a cross shape were fixedly connected to the rod body. The material was water-resistant elastic plastic, and the stirring plates could rotate flexibly according to the shape of the plastic. The flexible mixing plate can rotate flexibly with the wrapped plastic film, preventing the film from getting stuck and forming clumps; during mixing, the film is dispersed layer by layer by the cross plate, making full contact with the cleaning water, and leaving no impurities in the clumps; at the same time, the cross structure can push away large pieces of pipe fragments from different directions, preventing the fragments from squeezing each other, and is suitable for non-tangling cleaning of mixed plastics. The rotatable structure prevents plastic from being pressed into the gaps and forming mixed clumps. After cleaning, the plastic is loose and can directly enter the filter box 7 for dehydration without manual disassembly. Subsequent sorting processes are uninterrupted, and the continuous production process is uninterrupted. It is suitable for the batch cleaning needs of recycled plastic plants and reduces the amount of manual maintenance.

[0043] Although embodiments of the present 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 present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An integrated processing equipment for washing and sorting waste plastics, comprising a fixed base plate (1), characterized in that: A cleaning assembly is provided on the fixed base plate (1). The cleaning assembly includes two protective boxes (2). The two protective boxes (2) are fixedly connected to the upper surface of the fixed base plate (1). The two protective boxes (2) are arranged in a left-right correspondence. Among them, the upper surface of the two protective boxes (2) is provided with a sliding groove (5) that communicates with the interior, and the inner wall of the two sliding grooves (5) is slidably connected with a T-shaped moving plate (3). Among them, servo motors (6) are fixedly installed on the front surface of the two protective boxes (2), and threaded rods (15) are fixedly connected to the output ends of the two servo motors (6). The rear ends of the two threaded rods (15) are respectively rotated and penetrated into the interior of the protective box (2), and respectively rotated and connected to the inner wall of the corresponding protective box (2). Among them, the outer walls of the two threaded rods (15) are threaded with movable sleeves (14), and the lower ends of the two T-shaped movable plates (3) are fixedly connected to the upper surfaces of the corresponding movable sleeves (14). Hydraulic cylinders (11) are fixedly installed on the upper surfaces of the two T-shaped moving plates (3), and L-shaped fixing plates (12) are fixedly connected to the telescopic ends of the two hydraulic cylinders (11). The first drive motor mounting box (16) is fixedly connected to the opposite surfaces of the two L-shaped fixing plates (12). Among them, the first drive motors are fixedly installed inside the two first drive motor mounting boxes (16), and the output ends of the two first drive motors are fixedly connected to drive shafts. The opposite ends of the two drive shafts rotate through the outer surface of the corresponding L-shaped fixing plate (12). The two drive shafts are fixedly connected to the opposite ends of the second drive motor mounting box (17), and the two second drive motor mounting boxes (17) are fixedly installed inside the second drive motor mounting box (17); Among them, the two second drive motor mounting boxes (17) are fixedly connected to the opposite sides of the cleaning tank (13), and the outer surface of the cleaning tank (13) is provided with multiple through holes that communicate with its interior. Among them, a cleaning box (4) is fixedly connected to the upper surface of the fixed base plate (1), and the cleaning box (4) is located on the opposite side of the two protective boxes (2); Among them, a partition (10) is fixedly connected in the middle of the inside of the cleaning tank (4). The partition (10) divides the inside of the cleaning tank (4) into a pre-washing tank (26) and a hot washing tank (25). The pre-washing tank (26) is located on the rear side, and an electric heating tube (30) is installed inside the hot washing tank (25). Among them, the front and rear surfaces of the cleaning tank (4) are fixedly connected to two installation pipes (29) that communicate with its interior. The two installation pipes (29) located above are water inlet pipes, and the two installation pipes (29) located below are water outlet pipes.

2. The integrated waste plastic washing and sorting processing equipment according to claim 1, characterized in that: The cleaning tank (13) has a connecting rod (19) rotatably connected to the left and right inner walls. The left and right ends of the connecting rod (19) respectively rotatably penetrate into the interior of the corresponding second drive motor mounting box (17) and are respectively fixedly connected to the output end of the corresponding second drive motor. Among them, the front and rear surfaces and the lower surface of the connecting rod (19) are fixedly connected to the stirring rack (20), the end faces of the three stirring racks (20) are all arc-shaped, the arc surfaces of the three stirring racks (20) are all in contact with the inner wall of the cleaning tank (13), and the stirring rod (18) is fixedly connected to the stirring rack (20). The upper surface of the cleaning tank (13) is fixedly connected to a rectangular feed box (28) that communicates with its interior.

3. The integrated waste plastic washing and sorting processing equipment according to claim 1 or 2, characterized in that: A filter box (7) is fixedly connected to the upper surface of the fixed base plate (1), and the filter box (7) is located in front of the cleaning box (4); The filter box (7) has rectangular grooves (8) that communicate with its interior on both the front and rear surfaces. A drain pipe is provided on the right side of the filter box (7), and a drain valve is provided on the drain pipe. An inclined screen plate (9) is provided inside the filter box (7). The front and rear ends of the inclined screen plate (9) pass through the inner walls of the corresponding rectangular grooves (8). The inclined screen plate (9) is inclined forward. Two vibration motors (22) are fixedly installed on the lower surface of the inclined screen plate (9). Among them, the front and rear surfaces of the filter box (7) are fixedly connected to two auxiliary springs (23), the upper ends of the four auxiliary springs (23) are fixedly connected to the inclined screen plate (9), and the interior of the four auxiliary springs (23) is provided with auxiliary telescopic rods. The lower ends of the four auxiliary telescopic rods are fixedly connected to the corresponding fixed plates (21), and the upper ends of the four auxiliary telescopic rods are fixedly connected to the inclined screen plate (9).

4. The integrated waste plastic washing and sorting processing equipment according to claim 3, characterized in that: The front surface of the filter box (7) is provided with a first conveying mechanism (24), which is located below the inclined screen plate (9); The rear surface of the fixed base plate (1) is provided with a second conveying mechanism (27).

5. The integrated waste plastic washing and sorting processing equipment according to claim 2, characterized in that: The structure of the stirring rack (20) can be a serrated stirring rack.

6. The integrated waste plastic washing and sorting processing equipment according to claim 2, characterized in that: The stirring rod (18) can be a cross-shaped stirring rod and is horizontally connected to the stirring frame (20).

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