A circulating type regenerated plastic raw material cleaning device

Abstract

The present application relates to the technical field of plastic cleaning, in particular to a circulating regenerated plastic raw material cleaning device, which comprises a cleaning tank, a rotating cleaning mechanism is arranged in the cleaning tank, the rotating cleaning mechanism comprises a plurality of groups of brush rollers, one-way rotating mechanisms and energy storage driving mechanisms are arranged at the two ends of each group of brush rollers respectively, the one-way rotating mechanism comprises a ratchet mechanism and a rotating shaft, a lifting pressing plate is arranged above the cleaning tank, gears are connected to the rotating shafts, a plurality of racks are arranged on the lifting pressing plate, a sewage outlet and a water spraying mechanism are arranged on the two sides of the cleaning tank respectively, a lifting sealing plate is arranged on the sewage outlet, and a dirt filtering mechanism is arranged outside the cleaning tank. When the lifting pressing plate presses the plastic particles towards the rotating cleaning mechanism, the brush rollers in the rotating cleaning mechanism can brush the plastic particles below the lifting pressing plate by rotating, and since the plastic particles are limited from floating upwards by the lifting pressing plate, the plastic particles can be in contact with the brush rollers for a long time and be effectively brushed.

Description

Technical Field

[0001] This invention relates to the field of plastic cleaning technology, specifically to a recycling-type plastic raw material cleaning device. Background Technology

[0002] Plastic recycling refers to the process of reprocessing waste plastics into new plastic raw materials or products. During this process, the plastic raw materials need to be cleaned. The main purpose of cleaning is to remove dirt, oil, dust, and other impurities adhering to the plastic surface, thereby improving the purity and processing performance of the plastic. Simultaneously, cleaning also helps remove odors from the plastic, making it more suitable for manufacturing products in sensitive fields such as food packaging and medical devices.

[0003] The existing Chinese patent with publication number CN116000003B discloses a raw material cleaning device for plastic product manufacturing. However, the above patent and the prior art still have the following defects:

[0004] Firstly, the aforementioned patent uses an arc-shaped roller to agitate the water to prevent plastic materials from floating. However, in actual operation, plastic materials are mostly granular. When the water level in the cleaning chamber is higher than the arc-shaped roller, the plastic materials will float above the arc-shaped roller. Therefore, the rotation of the arc-shaped roller alone cannot drive the floating plastic materials to flow downwards.

[0005] Secondly, during the cleaning process of plastic raw materials, the plastic raw materials are cleaned by contacting the first cleaning brush and the second cleaning brush. During this process, due to the continuous rotation of the arc roller, the contact time between the plastic raw materials and the second cleaning brush will be very short, which will ultimately lead to incomplete cleaning.

[0006] Third, during the cleaning process of plastic raw materials, the dirt washed off the plastic raw materials will fall directly into the water, and the above-mentioned patent does not mention how to clean the dirt in the water. If the dirt is not cleaned in time, the dirt in the water will re-adhere to the plastic particles.

[0007] Therefore, it is necessary to provide a recycling-type plastic raw material cleaning device to address the above problems. Summary of the Invention

[0008] Therefore, it is necessary to provide a recycling-type plastic raw material cleaning device to address the problems of existing technologies.

[0009] To address the problems of existing technologies, the present invention adopts the following technical solution: a circulating recycled plastic raw material cleaning device, comprising a cleaning tank with an open top, and a rotating cleaning mechanism inside the cleaning tank. The rotating cleaning mechanism includes several sets of brush rollers equidistantly distributed horizontally. Each set of brush rollers is rotatably connected to the cleaning tank. Each set of brush rollers has a unidirectional rotating mechanism and an energy-storing drive mechanism at both ends. The unidirectional rotating mechanism includes a ratchet mechanism and a rotating shaft. The rotating shaft is rotatably located outside the cleaning tank. The ratchet mechanism connects the rotating shaft to one end of the brush roller. The driving mechanism includes a housing and a spring. The housing is fixed to the outer wall of the cleaning tank. The spring is located inside the housing. The other end of the brush roller is connected to the spring. A horizontal lifting pressure plate is provided above the cleaning tank. Several holes are opened on the lifting pressure plate. A gear is connected to each rotating shaft. Several racks corresponding to the gears are provided on the lifting pressure plate. Each rack is vertical and meshes with the gear. A drain port and a water spray mechanism are provided on both sides of the cleaning tank. A lifting sealing plate is provided on the drain port. A dirt filtration mechanism is provided outside the cleaning tank near the drain port.

[0010] Furthermore, each brush roller includes a brush cylinder and a rotating roller. The outer wall of the rotating roller has several strips evenly distributed along the circumference of the rotating roller. The length direction of each strip is parallel to the axial direction of the rotating roller. The brush cylinder has a cylindrical through groove for the rotating roller to pass through. The cylindrical through groove has several slots that mate with the strips. Several through holes are opened on both sides of the cleaning box. Each end of the rotating roller passes through two corresponding through holes. Several No. 1 shaft seats corresponding to the through holes are fixed on the outer wall of one side of the cleaning box. One end of each rotating roller is connected to the No. 1 shaft seat. Sealing rings and sealing bushings are respectively installed in the through holes on both sides of the cleaning box.

[0011] Furthermore, each ratchet mechanism includes a ratchet disc and several sets of elastic pawls. The ratchet disc is coaxially fixed to the end of the corresponding roller. A ring of ratchet teeth is formed on the outer edge of the ratchet disc. A second bearing seat is provided on the side of the ratchet disc and fixed to the cleaning box. The rotating shaft is connected to the second bearing seat and is coaxial with the corresponding roller. Several sets of elastic pawls are evenly distributed along the circumference of the rotating shaft. Each set of elastic pawls is connected to the rotating shaft and meshes with the ratchet teeth.

[0012] Furthermore, each outer shell is circular, and the side of each outer shell facing away from the cleaning box is open. A circular cover plate is fixedly installed on the open side of each outer shell. A retaining ring is formed at the outer edge of the circular cover plate. The spring is located inside the retaining ring, and the outer edge of the spring is fixedly connected to the circular cover plate. A circular hole is opened on the side of each outer shell facing the cleaning box. A connecting pin is formed on the end of each roller near the outer shell, which passes through the outer shell and is fixedly connected to the center end of the spring.

[0013] Furthermore, both ends of the lifting pressure plate are formed with uprights, and a horizontal connecting rod is fixed between the two uprights. A vertical cylinder is provided above the connecting rod, and the output end of the cylinder is fixed downward to the connecting rod.

[0014] Furthermore, the top of the lifting pressure plate is formed with several L-shaped rods. The vertical end of each L-shaped rod is fixed downward to the lifting pressure plate, and the horizontal end of each L-shaped rod extends laterally outward from the lifting pressure plate. A vertically downward lifting rod is fixed to the horizontal end of each L-shaped rod, and each rack is formed at the lower end of the lifting rod.

[0015] Furthermore, the cleaning tank is equipped with several cylindrical shells equidistantly distributed horizontally. Each cylindrical shell is vertical and located below the drain outlet. The top of each cylindrical shell is open. Each cylindrical shell contains a sliding rod and a spring. The sliding rod is vertical, and its bottom end is formed with an enlarged block, which is cylindrical. The spring is located below the sliding rod, and its two ends abut against the enlarged block and the inner bottom wall of the cylindrical shell, respectively. A sealing cap is fixedly installed on the open end of each cylindrical shell. The upper end of the sliding rod passes through the sealing cap. The lifting plate is in contact with the inner wall of the cleaning tank. The top of the lifting plate is formed with a transverse support bar, and the top of each sliding rod is fixedly connected to the transverse support bar.

[0016] Furthermore, the water spraying mechanism includes several sets of nozzles equidistantly distributed in the horizontal direction, each nozzle being fixed on the inner wall of one side of the cleaning tank, and each nozzle facing the drain outlet.

[0017] Furthermore, the dirt filtration mechanism includes a water collection box, a roll-shaped filter element, and a motor. The water collection box is horizontally fixed to the outer wall of the cleaning tank and is located below the drain outlet. One end of the water collection box has a drain outlet. The roll-shaped filter element includes a central shaft and a filter cloth. The two ends of the water collection box are respectively provided with a first support frame and a second support frame. The central shaft rotates horizontally on the first support frame. The motor is horizontally fixed to the second support frame. A roller is coaxially fixed to the output end of the motor. The filter cloth is wound around the central shaft. One end of the filter cloth horizontally passes over the top of the water collection box and is wound around the roller. A guide plate located below the drain outlet is formed on the outer wall of the cleaning tank.

[0018] Furthermore, an aeration mechanism is fixedly installed at the bottom of the cleaning tank. The aeration mechanism includes an aeration pipe and several sets of aeration nozzles. The several sets of aeration nozzles are fixedly connected to the bottom wall of the cleaning tank, and the aeration pipe connects the several sets of aeration nozzles.

[0019] The beneficial effects of this invention compared to the prior art are:

[0020] Firstly, the lifting pressure plate of this device is used to press the plastic particles floating on the water surface into the water. The lifting pressure plate has several holes to ensure that water can pass through it. After the plastic particles are pressed into the water, the rotating cleaning mechanism will scrub the plastic particles in the water. The lifting pressure plate can effectively prevent the plastic particles from floating during the cleaning process.

[0021] Secondly, when the lifting plate presses the plastic particles against the rotating cleaning mechanism, the brush roller inside the rotating cleaning mechanism will brush the plastic particles below the lifting plate by rotating. Since the plastic particles are restricted from floating by the lifting plate, the plastic particles can be in contact with the brush roller for a long time and be effectively brushed.

[0022] Third, when the plastic granules are being scrubbed, the dirt washed off the plastic granules will float to the surface of the water through the drain holes on the lifting pressure plate. Then, the water spraying mechanism will spray water into the cleaning tank, so that the dirt floating on the water surface will be flushed to the drain outlet, thus achieving timely cleaning of the dirt in the cleaning tank and preventing the dirt from adhering to the plastic granules again. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 ;

[0024] Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2 ;

[0025] Figure 3 yes Figure 2 A magnified view of the area indicated by A1 in the diagram;

[0026] Figure 4 yes Figure 2 The enlarged view of the area indicated by A2 in the diagram;

[0027] Figure 5 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 3 ;

[0028] Figure 6 This is a top view of the present invention;

[0029] Figure 7 yes Figure 6 Sectional view along line AA;

[0030] Figure 8 yes Figure 6 Sectional view along line BB;

[0031] Figure 9 yes Figure 8 The enlarged view of the area indicated in A3;

[0032] Figure 10 yes Figure 8 The enlarged view shown in section A4;

[0033] Figure 11 yes Figure 6 Sectional view along line CC;

[0034] Figure 12 yes Figure 6 Sectional view along line DD;

[0035] Figure 13 yes Figure 12 The enlarged view of the area indicated in A5;

[0036] Figure 14 This is a three-dimensional structural diagram of the lifting pressure plate;

[0037] Figure 15 This is a schematic diagram of the three-dimensional structure of the brush roller;

[0038] Figure 16 yes Figure 15 The enlarged view of the area indicated by A6 in the middle;

[0039] Figure 17 It is an exploded view of the three-dimensional structure of the brush cylinder and the rotating roller;

[0040] Figure 18 This is a three-dimensional structural diagram of the rotating roller and the energy storage drive mechanism;

[0041] Figure 19 This is a three-dimensional structural diagram of the mainspring and the rotating roller;

[0042] Figure 20 This is a three-dimensional structural diagram of the cleaning tank.

[0043] The diagram is labeled as follows: 1. Cleaning tank; 2. Brush roller; 3. One-way rotation mechanism; 4. Energy storage drive mechanism; 5. Rotating shaft; 6. Housing; 7. Spring; 8. Lifting pressure plate; 9. Drain hole; 10. Gear; 11. Rack; 12. Drain outlet; 13. Lifting sealing plate; 14. Brush cylinder; 15. Rotating roller; 16. Insert strip; 17. Cylindrical through groove; 18. Slot; 19. Through hole; 20. Shaft seat No. 1; 21. Sealing ring; 22. Sealing bushing; 23. Racket disc; 24. Elastic pawl; 25. Racket; 26. Shaft seat No. 2; 27. 1. Circular cover plate; 28. Retaining ring; 29. ​​Circular hole; 30. Connecting pin; 31. Stand; 32. Connecting rod; 33. Cylinder; 34. L-shaped rod; 35. Lifting rod; 36. Cylindrical shell; 37. Sliding rod; 38. Spring; 39. Expansion block; 40. Sealing cover; 41. Horizontal support bar; 42. Nozzle; 43. Water collection box; 44. Motor; 45. Drain outlet; 46. Central shaft; 47. Filter cloth; 48. Support frame No. 1; 49. Support frame No. 2; 50. Roller; 51. Guide plate; 52. Aeration pipe; 53. Aeration nozzle. Detailed Implementation

[0044] To further understand the features, technical means, and specific objectives and functions achieved by the present invention, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0045] refer to Figures 1 to 20 The illustrated circulating recycled plastic raw material cleaning device includes a cleaning tank 1 with an open top. A rotary cleaning mechanism is installed inside the cleaning tank 1, comprising several sets of brush rollers 2 evenly distributed horizontally (e.g., ...). Figure 7 As shown), each set of brush rollers 2 is rotatably connected to the cleaning tank 1. Each set of brush rollers 2 has a one-way rotation mechanism 3 and an energy storage drive mechanism 4 at both ends. The one-way rotation mechanism 3 includes a ratchet mechanism and a rotating shaft 5. The rotating shaft 5 is rotatably located outside the cleaning tank 1 (e.g., Figure 9 As shown), the ratchet mechanism connects the rotating shaft 5 to one end of the brush roller 2. The energy storage drive mechanism 4 includes a housing 6 and a spring 7. The housing 6 is fixedly connected to the outer wall of the cleaning tank 1 (as shown). Figure 10 As shown), the spring 7 is located inside the outer casing 6, and the other end of the brush roller 2 is connected to the spring 7. A horizontal lifting pressure plate 8 is located above the cleaning box 1. The lifting pressure plate 8 has several drainage holes 9. A gear 10 is connected to each rotating shaft 5. The lifting pressure plate 8 has several racks 11 corresponding one-to-one with the gears 10. Each rack 11 is vertical (as shown). Figure 14 As shown), each rack 11 meshes with a gear 10. The cleaning tank 1 has a drain port 12 and a water spray mechanism on each side. A lifting sealing plate 13 (as shown) is provided on the drain port 12. Figure 12 As shown), the cleaning tank 1 is equipped with a dirt filtration mechanism near the drain outlet 12.

[0046] In the initial state, the lifting sealing plate 13 blocks the drain outlet 12. Then, an appropriate amount of water is injected into the cleaning tank 1, and the plastic granules to be cleaned are poured into the cleaning tank 1. After the plastic granules are poured into the cleaning tank 1, they float on the water surface. Then, the lifting pressure plate 8 presses the floating plastic granules against several sets of brush rollers 2. During this process, the water in the cleaning tank 1 overflows the lifting pressure plate 8 through the drain hole 9, and the plastic granules are pressed against the several sets of brush rollers 2 by the lifting pressure plate 8. Simultaneously, several racks 11 descend along with the lifting pressure plate 8. Each rack 11 descends during this process... The corresponding gear 10 will be driven to rotate. When gear 10 rotates, it will drive the rotating shaft 5 to rotate. The rotating shaft 5 drives the brush roller 2 to rotate through the ratchet mechanism. At this time, the rotating brush roller 2 will drive the spring 7 to wind up. After the spring 7 winds up, it will generate a spring force to drive the brush roller 2 to rotate in the opposite direction. When the plastic particles approach the brush roller 2, the rack 11 moves downward past the gear 10, and the gear 10 no longer meshes with the rack 11. In this way, the spring 7 will release the spring force to drive the corresponding brush roller 2 to rotate in the opposite direction. At this time, the plastic particles under the lifting pressure plate 8 are brushed by the rotating brush roller 2. During the brushing process, the lifting pressure plate 8... With the pressure plate 8 in a suspended state, the dirt washed off the plastic granules floats to the surface of the water. At this time, the lifting plate 13 opens, and the water spraying mechanism sprays water into the cleaning tank 1. The water flow carries the dirt floating on the surface towards the drain port 12. Finally, the dirt is discharged with the water flow through the drain port 12 to the dirt filtration mechanism, which filters the dirt in the water. When the spring 7 has fully released its stored energy, the brush roller 2 stops rotating. After that, the lifting plate 8 rises. During this process, the rack 11 and gear 10 mesh again. However, at this time, due to the unique unidirectional rotation of the ratchet mechanism, the brush roller... 2. The lifting plate 8 will not rotate. During the process of the lifting plate 8 rising, the lifting sealing plate 13 will close the drain port 12 to prevent the plastic particles floating with the lifting plate 8 from being discharged from the drain port 12. After the lifting plate 8 rises, the lifting plate 8 will fall again, and this cycle will repeat. Finally, the plastic particles will be thoroughly cleaned in the cleaning tank 1. During the cleaning of the plastic particles, the water in the cleaning tank 1 will be circulated through the water spray mechanism and the drain port 12 to ensure that the sewage can be discharged in time and will not cause secondary pollution to the plastic particles. After the plastic particles are cleaned, the plastic particles in the cleaning tank 1 can be taken out.

[0047] To demonstrate how the brush roller 2 is rotatably connected to the cleaning tank 1, the following features are provided:

[0048] Each brush roller 2 includes a brush cylinder 14 and a rotating roller 15. The outer wall of the rotating roller 15 has several inserts 16 evenly distributed along the circumference of the rotating roller 15 (e.g., ...). Figure 17As shown), the length direction of each insert 16 is parallel to the axial direction of the rotating roller 15. A cylindrical through-slot 17 is provided inside the brush cylinder 14 for the rotating roller 15 to pass through. Several slots 18 are provided on the cylindrical through-slot 17 to mate with the inserts 16. Several through holes 19 are provided on both sides of the cleaning box 1 (as shown). Figure 9 As shown), each of the two ends of each roller 15 passes through two corresponding through holes 19. Several No. 1 bearings 20 corresponding to the through holes 19 are fixed on the outer wall of one side of the cleaning box 1. One end of each roller 15 is connected to the No. 1 bearing 20. Sealing rings 21 and sealing bushings 22 are respectively provided in the through holes 19 on both sides of the cleaning box 1.

[0049] When installing the brush roller 2 into the cleaning tank 1, first place the brush cylinder 14 horizontally inside the cleaning tank 1, and then pass the rotating roller 15 through the through hole 19 through the cleaning tank 1 and the brush cylinder 14 in sequence. When the rotating roller 15 passes through the brush cylinder 14, ensure that each insert 16 is inserted into the corresponding slot 18. After the rotating roller 15 is inserted into the brush cylinder 14, connect one end of the rotating roller 15 to the corresponding first shaft seat 20. The sealing bushing 22 is used to cooperate with the first shaft seat 20 to lubricate the rotation of the rotating roller 15, and the sealing bushing 22 can also prevent water in the cleaning tank 1 from leaking out from the corresponding through hole 19. The sealing ring 21 plays a dynamic sealing role to prevent water from leaking out from the corresponding through hole 19.

[0050] To demonstrate the specific structure of the ratchet mechanism, the following features are provided:

[0051] Each ratchet mechanism includes a ratchet disc 23 and several sets of flexible pawls 24 (e.g. Figure 16 As shown), the ratchet disc 23 is coaxially fixed to the end of the corresponding rotating roller 15. A ring of ratchet teeth 25 is formed on the outer edge of the ratchet disc 23. A second bearing seat 26 fixed to the cleaning box 1 is provided on the side of the ratchet disc 23. The rotating shaft 5 is connected to the second bearing seat 26, and the rotating shaft 5 is coaxial with the corresponding rotating roller 15. Several sets of elastic pawls 24 are evenly distributed along the circumference of the rotating shaft 5. Each set of elastic pawls 24 is connected to the rotating shaft 5, and each set of elastic pawls 24 meshes with the ratchet teeth 25.

[0052] When the lifting plate 8 descends, the rack 11 drives the gear 10 to rotate. After the gear 10 rotates, it drives the rotating shaft 5 to rotate. At this time, several sets of elastic pawls 24 drive the rotating roller 15 to rotate through the ratchet disc 23. The rotating roller 15 stores energy in the spring 7 by rotating. When the lifting plate 8 descends to the point where the rack 11 passes the gear 10, the rack 11 no longer meshes with the gear 10. At this time, the spring 7 releases the stored elastic force to drive the rotating roller 15 to rotate in the opposite direction. Finally, the rotating roller 15 drives the brush roller 2 to brush the plastic particles below the lifting plate 8. When the lifting plate 8 rises, the rack 11 drives the gear 10 to rotate in the opposite direction. At this time, each set of elastic pawls 24 slides on the ratchet 25. Several sets of elastic pawls 24 will not drive the ratchet disc 23 to rotate, thus ensuring that the rotating roller 15 will not rotate when the lifting plate 8 rises, preventing the rotating roller 15 from twisting the spring 7 in the opposite direction.

[0053] To demonstrate how the spring 7 is specifically connected to the brush roller 2, the following features are provided:

[0054] Each outer shell 6 is circular (e.g.) Figure 18 As shown), each outer shell 6 has an open structure on the side facing away from the cleaning tank 1. A circular cover plate 27 is fixedly provided on the open side of each outer shell 6. A retaining ring 28 is formed at the outer edge of the circular cover plate 27. The spring 7 is located inside the retaining ring 28. The outer edge of the spring 7 is fixedly connected to the circular cover plate 27. A circular hole 29 is provided on the side of each outer shell 6 facing the cleaning tank 1. A connecting pin 30 is formed on the end of each roller 15 near the outer shell 6, which passes through the outer shell 6 and is fixedly connected to the center end of the spring 7.

[0055] When the roller 15 rotates, the roller 15 will wind the mainspring 7 through the connecting pin 30. After the mainspring 7 is wound, it will store energy and generate elastic force. When the rack 11 is no longer meshed with the gear 10, the mainspring 7 releases the elastic force. At this time, the deformation of the mainspring 7 when releasing the elastic force is limited by the retaining ring 28 to ensure that the mainspring 7 is not too loose after fully releasing the elastic force.

[0056] To demonstrate how the lifting pressure plate 8 rises and falls, the following features are provided:

[0057] Both ends of the lifting pressure plate 8 are formed with uprights 31. A horizontal connecting rod 32 is fixed between the two uprights 31. A vertical cylinder 33 is provided above the connecting rod 32. The output end of the cylinder 33 is fixed downward to the connecting rod 32.

[0058] In actual use, cylinder 33 can be mounted above the cleaning tank 1 via a gantry (not shown in the figure). When cylinder 33 is started, cylinder 33 will drive connecting rod 32 to rise and fall. Connecting rod 32 will drive the entire lifting pressure plate 8 to rise and fall through two uprights 31.

[0059] To demonstrate how rack 11 is connected to lifting pressure plate 8, the following features are provided:

[0060] The top of the lifting pressure plate 8 is formed with several L-shaped rods 34 (such as... Figure 14 As shown), the vertical end of each L-shaped rod 34 is fixed downward to the lifting pressure plate 8, the horizontal end of each L-shaped rod 34 extends laterally outward from the lifting pressure plate 8, and a vertically downward lifting rod 35 is fixed to the horizontal end of each L-shaped rod 34. Each rack 11 is formed at the lower end of the lifting rod 35.

[0061] When the lifting plate 8 descends, it drives the lifting rod 35 to descend via the L-shaped rod 34. After the lifting rod 35 descends, it drives the rack 11 to move toward the gear 10. When the rack 11 meshes with the gear 10, the gear 10 is driven to rotate as the rack 11 descends. At this time, the rotating roller 15 winds up the spring 7 to store energy. When the lifting rod 35 descends to the point where the rack 11 passes the gear 10 and the gear 10 no longer meshes with the rack 11, the gear 10 is in a free state. The spring 7 will then immediately release its elasticity to drive the rotating roller 15 to rotate in the opposite direction. At this time, the brush cylinder 14 brushes the plastic particles below the lifting plate 8 by rotating.

[0062] To demonstrate how the lifting and lowering plate 13 moves, the following features are set:

[0063] The cleaning tank 1 is fixedly equipped with several cylindrical shells 36 that are equidistantly distributed along the horizontal direction (e.g. Figure 13 As shown), each cylindrical shell 36 is vertical and located below the drain outlet 12. The top of each cylindrical shell 36 is an open structure. Each cylindrical shell 36 is equipped with a slide rod 37 and a spring 38. The slide rod 37 is vertical, and the bottom end of the slide rod 37 is formed with an enlarged block 39, which is cylindrical. The spring 38 is located below the slide rod 37, and the two ends of the spring 38 abut against the enlarged block 39 and the inner bottom wall of the cylindrical shell 36, respectively. A sealing cover 40 is fixedly provided on the open end of each cylindrical shell 36. The upper end of the slide rod 37 passes through the sealing cover 40. The lifting sealing plate 13 is attached to the inner wall of the cleaning tank 1. The top of the lifting sealing plate 13 is formed with a transverse support 41, and the top end of each slide rod 37 is fixedly connected to the transverse support 41.

[0064] In the initial state, the spring 38 releases its elastic force to drive the slide bar 37 to rise. At this time, the slide bar 37 will drive the entire lifting sealing plate 13 to rise by abutting against the transverse support bar 41, thus blocking the drain outlet 12. When the lifting pressure plate 8 descends, one end of the lifting pressure plate 8 will abut against the transverse support bar 41. After that, the lifting sealing plate 13 will descend along with the lifting pressure plate 8. As the lifting sealing plate 13 descends, the drain outlet 12 gradually opens. Each slide bar 37 will compress the spring 38 downwards, causing the spring 38 to generate... The elasticity allows the dirt washed off the plastic particles to float to the surface and eventually be discharged through the drain port 12 when the lifting pressure plate 8 rises. The elasticity of the spring 38 drives the slide rod 37 to rise, and the lifting sealing plate 13 will rise along with the lifting pressure plate 8. Finally, the lifting sealing plate 13 will block the drain port 12 again to prevent the plastic particles floating with the lifting pressure plate 8 from being discharged from the drain port 12. After the plastic particles are cleaned, they can be taken out of the cleaning tank 1.

[0065] To demonstrate the specific structure of the water spray mechanism, the following features were incorporated:

[0066] The water spray mechanism includes several groups of nozzles 42 that are equidistantly distributed along the horizontal direction (e.g. Figure 7 As shown), each nozzle 42 is fixed on the inner wall of one side of the cleaning tank 1, and each nozzle 42 faces the drain port 12.

[0067] In actual use, several nozzles 42 are connected to an external water pipe (not shown in the figure). When the lifting plate 8 presses the plastic particles down to a distance close to several sets of brush rollers 2, the lifting plate 8 stops descending. At this time, the external water pipe introduces clean water into each nozzle 42, and the nozzle 42 sprays clean water into the cleaning chamber. In this way, the clean water sprayed into the cleaning chamber washes the dirt floating on the water surface toward the drain outlet 12.

[0068] To demonstrate the specific structure of the dirt filtration mechanism, the following features are included:

[0069] The scale filtration mechanism includes a water collection box 43, a roll-shaped filter element, and a motor 44. The water collection box 43 is horizontally fixed to the outer wall of the cleaning tank 1 and is located below the drain outlet 12. One end of the water collection box 43 is provided with a drain outlet 45. The roll-shaped filter element includes a central shaft 46 and a filter cloth 47 (e.g., ...). Figure 11 As shown), the water collection box 43 is provided with a first support frame 48 and a second support frame 49 at its two ends respectively. The central shaft 46 rotates horizontally on the first support frame 48. The motor 44 is fixed horizontally on the second support frame 49. A roller 50 is coaxially fixed to the output end of the motor 44. The filter cloth 47 is wound around the central shaft 46. One end of the filter cloth 47 passes horizontally over the water collection box 43 and is wound around the roller 50. A guide plate 51 located below the drain outlet 12 is formed on the outer wall of the cleaning tank 1.

[0070] Dirt and grime in the cleaning tank 1 are discharged with water from the drain port 12. After the dirt and water are discharged, they fall downwards through the guide plate 51 onto the horizontal filter cloth 47. The filter cloth 47 intercepts the dirt, while the water passes through the filter cloth 47 and falls into the water collection box 43. After falling into the water collection box 43, the water is discharged through the drain port 45. In actual use, the drain port 45 is connected to the cleaning tank 1 through a return pipe (not shown in the figure) to achieve water circulation. After the filter cloth 47 blocks the dirt, the motor 44 will drive the roller 50 to rotate. Then the filter cloth 47 wound on the central shaft 46 will be gradually pulled toward the drain port 12. The filter cloth 47, which is full of dirt, will be wound on the roller 50. After all the dirt in the cleaning box 1 has been filtered, the filter cloth 47 above the water collection box 43 is cut off, and then the filter cloth 47 on the roller 50 is removed. Finally, the filter cloth 47 on the central shaft 46 is wound back onto the roller 50.

[0071] To facilitate the rise of dirt inside the cleaning tank 1, the following features are provided:

[0072] An aeration mechanism is fixedly installed at the bottom of the cleaning tank 1. The aeration mechanism includes an aeration pipe 52 and several sets of aeration nozzles 53 (such as...). Figure 8 As shown), several sets of aeration nozzles 53 are fixedly connected to the bottom wall of the cleaning tank 1, and the aeration pipes 52 connect the several sets of aeration nozzles 53.

[0073] In actual use, the aeration pipe 52 is connected to an external air source (not shown in the figure). When the plastic particles are being scrubbed, the external air source will introduce gas into each set of aeration nozzles 53 through the aeration pipe 52. After that, each set of aeration nozzles 53 will spray gas into the cleaning tank 1. The rising gas will promote the floating of dirt in the cleaning tank 1. Each set of aeration nozzles 53 is equipped with a one-way valve (not shown in the figure) to prevent water in the cleaning tank 1 from flowing back into the aeration pipe 52.

[0074] Working principle:

[0075] In the initial state, the lifting sealing plate 13 blocks the drain outlet 12. Then, an appropriate amount of water is injected into the cleaning tank 1, and the plastic granules to be cleaned are poured into the cleaning tank 1. After the plastic granules are poured into the cleaning tank 1, they float on the water surface. Then, the lifting pressure plate 8 presses the floating plastic granules against several sets of brush rollers 2. During this process, the water in the cleaning tank 1 overflows the lifting pressure plate 8 through the drain hole 9, and the plastic granules are pressed against the several sets of brush rollers 2 by the lifting pressure plate 8. Simultaneously, several racks 11 descend along with the lifting pressure plate 8. Each rack 11 descends during this process... The corresponding gear 10 will be driven to rotate. When gear 10 rotates, it will drive the rotating shaft 5 to rotate. The rotating shaft 5 drives the brush roller 2 to rotate through the ratchet mechanism. At this time, the rotating brush roller 2 will drive the spring 7 to wind up. After the spring 7 winds up, it will generate a spring force to drive the brush roller 2 to rotate in the opposite direction. When the plastic particles approach the brush roller 2, the rack 11 moves downward past the gear 10, and the gear 10 no longer meshes with the rack 11. In this way, the spring 7 will release the spring force to drive the corresponding brush roller 2 to rotate in the opposite direction. At this time, the plastic particles under the lifting pressure plate 8 are brushed by the rotating brush roller 2. During the brushing process, the lifting pressure plate 8... With the pressure plate 8 in a suspended state, the dirt washed off the plastic granules floats to the surface of the water. At this time, the lifting plate 13 opens, and the water spraying mechanism sprays water into the cleaning tank 1. The water flow carries the dirt floating on the surface towards the drain port 12. Finally, the dirt is discharged with the water flow through the drain port 12 to the dirt filtration mechanism, which filters the dirt in the water. When the spring 7 has fully released its stored energy, the brush roller 2 stops rotating. After that, the lifting plate 8 rises. During this process, the rack 11 and gear 10 mesh again. However, at this time, due to the unique unidirectional rotation of the ratchet mechanism, the brush roller... 2. The lifting plate 8 will not rotate. During the process of the lifting plate 8 rising, the lifting sealing plate 13 will close the drain port 12 to prevent the plastic particles floating with the lifting plate 8 from being discharged from the drain port 12. After the lifting plate 8 rises, the lifting plate 8 will fall again, and this cycle will repeat. Finally, the plastic particles will be thoroughly cleaned in the cleaning tank 1. During the cleaning of the plastic particles, the water in the cleaning tank 1 will be circulated through the water spray mechanism and the drain port 12 to ensure that the sewage can be discharged in time and will not cause secondary pollution to the plastic particles. After the plastic particles are cleaned, the plastic particles in the cleaning tank 1 can be taken out.

[0076] The above embodiments only illustrate one or more implementations of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. A circulating recycled plastic raw material cleaning device, characterized in that, The system includes a cleaning tank (1) with an open top. A rotating cleaning mechanism is installed inside the cleaning tank (1). The rotating cleaning mechanism includes several sets of brush rollers (2) evenly distributed horizontally. Each set of brush rollers (2) is rotatably connected to the cleaning tank (1). Each set of brush rollers (2) has a unidirectional rotating mechanism (3) and an energy storage drive mechanism (4) at both ends. The unidirectional rotating mechanism (3) includes a ratchet mechanism and a rotating shaft (5). The rotating shaft (5) is rotatably located outside the cleaning tank (1). The ratchet mechanism connects the rotating shaft (5) to one end of the brush roller (2). The energy storage drive mechanism (4) includes a housing (6) and a spring (7). The housing (6) is fixedly connected to the outer wall of the cleaning tank (1). (7) Inside the outer shell (6), the other end of the brush roller (2) is connected to the spring (7). A horizontal lifting pressure plate (8) is provided above the cleaning box (1). Several holes (9) are opened on the lifting pressure plate (8). A gear (10) is connected to each rotating shaft (5). Several racks (11) corresponding to the gears (10) are provided on the lifting pressure plate (8). Each rack (11) is vertical and meshes with the gear (10). A drain port (12) and a water spraying mechanism are provided on both sides of the cleaning box (1). A lifting sealing plate (13) is provided on the drain port (12). A dirt filtration mechanism is provided outside the cleaning box (1) near the drain port (12).

2. The circulating recycled plastic raw material washing device according to claim 1, characterized in that, Each brush roller (2) includes a brush cylinder (14) and a rotating roller (15). Several inserts (16) are formed on the outer wall of the rotating roller (15) and are evenly distributed along the circumference of the roller (15). The length direction of each insert (16) is parallel to the axial direction of the rotating roller (15). A cylindrical through-slot (17) is provided inside the brush cylinder (14) for the rotating roller (15) to pass through. Several slots (11) are provided on the cylindrical through-slot (17) to mate with the inserts (16). 8) Several through holes (19) are provided on both sides of the cleaning box (1). The two ends of each roller (15) pass through the corresponding two through holes (19). Several No. 1 shaft seats (20) corresponding to the through holes (19) are fixed on the outer wall of one side of the cleaning box (1). One end of each roller (15) is connected to the No. 1 shaft seat (20). Sealing rings (21) and sealing bushings (22) are provided in the through holes (19) on both sides of the cleaning box (1).

3. The circulating recycled plastic raw material washing device according to claim 2, characterized in that, Each ratchet mechanism includes a ratchet disc (23) and several sets of elastic pawls (24). The ratchet disc (23) is coaxially fixed to the end of the corresponding roller (15). A ring of ratchet teeth (25) is formed on the outer edge of the ratchet disc (23). A second bearing seat (26) is provided on the side of the ratchet disc (23) and fixed to the cleaning box (1). The rotating shaft (5) is connected to the second bearing seat (26), and the rotating shaft (5) is coaxial with the corresponding roller (15). Several sets of elastic pawls (24) are evenly distributed along the circumference of the rotating shaft (5). Each set of elastic pawls (24) is connected to the rotating shaft (5), and each set of elastic pawls (24) meshes with the ratchet teeth (25).

4. The circulating recycled plastic raw material washing device according to claim 2, characterized in that, Each outer shell (6) is circular. Each outer shell (6) has an open structure on the side away from the cleaning box (1). A circular cover plate (27) is fixed on the open side of each outer shell (6). A retaining ring (28) is formed at the outer edge of the circular cover plate (27). The spring (7) is located inside the retaining ring (28). The outer edge of the spring (7) is fixed to the circular cover plate (27). A circular hole (29) is opened on the side of each outer shell (6) facing the cleaning box (1). A connecting pin (30) is formed on the end of each roller (15) near the outer shell (6) and is fixed to the center end of the spring (7).

5. The circulating recycled plastic raw material cleaning device according to claim 1, characterized in that, Both ends of the lifting pressure plate (8) are formed with uprights (31), and a horizontal connecting rod (32) is fixed between the two uprights (31). A vertical cylinder (33) is provided above the connecting rod (32), and the output end of the cylinder (33) is fixedly connected downward to the connecting rod (32).

6. The circulating recycled plastic raw material cleaning device according to claim 1, characterized in that, The top of the lifting pressure plate (8) is formed with several L-shaped rods (34). The vertical end of each L-shaped rod (34) is fixed downward to the lifting pressure plate (8). The horizontal end of each L-shaped rod (34) extends laterally outward from the lifting pressure plate (8). A vertically downward lifting rod (35) is fixed to the horizontal end of each L-shaped rod (34). Each rack (11) is formed at the lower end of the lifting rod (35).

7. The circulating recycled plastic raw material washing device according to claim 1, characterized in that, The cleaning tank (1) is fixed with several cylindrical shells (36) evenly distributed in the horizontal direction. Each cylindrical shell (36) is vertical and located below the drain outlet (12). The top of each cylindrical shell (36) is open. Each cylindrical shell (36) is equipped with a sliding rod (37) and a spring (38). The sliding rod (37) is vertical, and the bottom end of the sliding rod (37) is formed with an enlarged block (39). The enlarged block (39) is cylindrical. The spring (38) is... Located below the slide bar (37), the two ends of the spring (38) abut against the inner bottom wall of the expansion block (39) and the cylindrical shell (36) respectively. A sealing cover (40) is fixedly provided on the open end of each cylindrical shell (36). The upper end of the slide bar (37) passes through the sealing cover (40). The lifting plate (13) is in contact with the inner wall of the cleaning box (1). A transverse support (41) is formed on the top of the lifting plate (13). The top of each slide bar (37) is fixedly connected to the transverse support (41).

8. The circulating recycled plastic raw material washing device according to claim 1, characterized in that, The water spraying mechanism includes several sets of nozzles (42) evenly distributed in the horizontal direction. Each nozzle (42) is fixed on the inner wall of one side of the cleaning tank (1), and each nozzle (42) faces the drain port (12).

9. The circulating recycled plastic raw material washing device according to claim 1, characterized in that, The dirt filtration mechanism includes a water collection box (43), a rolled filter element, and a motor (44). The water collection box (43) is horizontally fixed on the outer wall of the cleaning tank (1) and is located below the drain outlet (12). One end of the water collection box (43) is provided with a drain outlet (45). The rolled filter element includes a central shaft (46) and a filter cloth (47). The two ends of the water collection box (43) are respectively provided with a first support frame (48) and a second support frame (49). The central shaft ( 46) Rotates horizontally on the first support frame (48), the motor (44) is fixed horizontally on the second support frame (49), the output end of the motor (44) is coaxially connected to the roller (50), the filter cloth (47) is wound on the central shaft (46), one end of the filter cloth (47) passes horizontally over the water collection box (43) and is wound on the roller (50), and a guide plate (51) is formed on the outer wall of the cleaning box (1) below the drain outlet (12).

10. A circulating recycled plastic raw material cleaning device according to claim 1, characterized in that, An aeration mechanism is fixedly provided at the bottom of the cleaning tank (1). The aeration mechanism includes an aeration pipe (52) and several sets of aeration nozzles (53). The several sets of aeration nozzles (53) are fixedly connected to the bottom wall of the cleaning tank (1), and the aeration pipe (52) connects the several sets of aeration nozzles (53).

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