Waste recovery equipment for plastic product production
By combining bidirectional crushing rollers and ultrasonic cleaning, the design solves the problems of uneven size and incomplete cleaning in existing waste recycling equipment for plastic product manufacturing. This achieves automation and efficient screening, improving production efficiency and material cleanliness.
Patent Information
- Application Number
- CN202512029294.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-30
- Publication Date
- 2026-02-17
AI Technical Summary
Existing waste recycling equipment for plastic product manufacturing suffers from poor dimensional uniformity, insufficient cleaning coordination, high energy consumption due to independent crushing and cleaning functions, complex structure, low degree of automation, easy clogging and difficult cleaning of filters, low water resource utilization, and inaccurate material transfer, all of which affect production efficiency and material cleanliness.
The device employs a bidirectional crushing roller design, combined with ultrasonic cleaning and high-pressure water spraying, to achieve integrated axial and circumferential crushing and cleaning of plastics; automatic screening and conveying are achieved through a reciprocating oscillating filter screen and scraper mechanism; and automated control and sludge collection are realized through a combination of controller and motor.
It improves the uniformity and cleaning effect of plastic scraps, reduces energy consumption, enhances the automation level of the equipment, prevents filter clogging, improves screening efficiency and water resource utilization, and ensures material cleanliness.
Smart Images
Figure CN121535874A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of waste recycling technology, specifically to a waste recycling device for the production of plastic products. Background Technology
[0002] Waste recycling equipment used in plastic product manufacturing is a crucial link in the plastic processing industry. It can not only significantly reduce production costs and reduce raw material waste, but also meet increasingly stringent environmental regulations.
[0003] Existing waste recycling equipment used in plastic product manufacturing has the following drawbacks: Plastic products have poor dimensional uniformity and insufficient cleaning coordination. Moreover, the crushing rollers mostly adopt a single-direction tooth design, which allows them to rotate only axially or circumferentially, enabling only unidirectional crushing. This results in irregular plastic fragment sizes and poor adaptability to subsequent processing. At the same time, the crushing and cleaning functions are independent of each other, and are mostly segmented operations of "crushing first and then cleaning". Impurities generated during the crushing process are easy to adhere to the surface of the fragments, resulting in incomplete cleaning and the need for additional transfer equipment, which increases the risk of secondary contamination. Furthermore, the existing equipment's crushing, screening, and conveying mechanisms are all equipped with independent drive motors, resulting in high total energy consumption, complex structure, and the need for manual adjustment of parameters to match the material flow rhythm (such as the crushing speed and screening frequency not matching, leading to material accumulation or insufficient screening). The degree of automation is low, and the cost of manual intervention is high. Meanwhile, since most of the filter screens are fixed or have a simple vibration design without a synchronous scraping mechanism, the sludge produced by crushing is easy to accumulate on the surface of the filter screen and clog the mesh, resulting in a continuous decline in screening efficiency. Furthermore, the screened impurities are difficult to clean, are easy to clog and have low efficiency, and require regular shutdowns for manual cleaning of the filter screens, which interrupts the production process and affects the overall processing efficiency. At the same time, the sludge collection is scattered, making subsequent cleaning difficult. Furthermore, wastewater is often directly discharged during the cleaning of plastic products, resulting in low water resource utilization. In addition, the transfer of screened plastic products in existing technologies is mostly manually triggered or driven by independent motors, without precise linkage with the screening process. This can easily lead to problems such as "transferring before screening is complete" or "transferring only after material accumulation". It can also easily cause incompletely screened impurities to mix into the finished plastic products or cause a large amount of washing water to be lost, affecting the cleanliness of the materials and the water resource utilization rate. Therefore, improvements are needed to address the issues raised above. Summary of the Invention
[0004] This invention provides a waste recycling device for plastic product manufacturing, which solves the problems mentioned in the background art.
[0005] This invention provides the following technical solution: a waste recycling device for plastic product manufacturing, comprising a cleaning tank, a dividing plate installed on the outer wall of the cleaning tank, a connecting shell and a plastic collection box respectively installed on the outer wall of the dividing plate, a controller fixedly mounted on the outer wall of the connecting shell, a crushing component provided at the end of the cleaning tank away from the plastic collection box, a fixing frame fixedly mounted on one end of each of the inner walls of both sides of the cleaning tank, and a crushing hopper clamped at the other end of the fixing frame, a filter component provided at the bottom of the crushing hopper, arc-shaped slope plates installed at the bottom of the inner walls of both sides of the cleaning tank, a conveying cylinder installed at the top of the crushing hopper, a feeding hopper sleeved on the outer wall of the conveying cylinder, a drive motor fixedly mounted on the top of the conveying cylinder, a spiral conveying rod fixedly mounted on the power output shaft of the drive motor, an output pipe clamped on the inner wall of the side of the cleaning tank away from the plastic collection box, and an opening and closing component provided on the outer wall of the output pipe.
[0006] As a preferred technical solution of the present invention: sludge collection shells are installed on both outer walls of the cleaning tank. A collection trough is opened at one end of the sludge collection shell near the cleaning tank. A sludge collection box is slidably connected to the inner wall of the sludge collection shell. The conveying cylinder is made of wear-resistant stainless steel, and the inner wall of the conveying cylinder is coated with a polytetrafluoroethylene wear-resistant layer. The drive motor is electrically connected to the controller. There are two fixing frames and arc-shaped slopes, and the two fixing frames and arc-shaped slopes are symmetrically distributed on the inner wall of the cleaning tank. The height of the sludge collection box is adapted to the height of the arc-shaped slope. A discharge port is fixedly installed at the bottom of the crushing hopper. A rotating ring plate is rotatably connected to the inner wall of the dividing plate, and a connecting groove is opened on the outer wall of the rotating ring plate.
[0007] As a preferred technical solution of the present invention: the crushing component includes a second drive motor, the power output shaft of the second drive motor is fixedly mounted with a drive shaft, the outer wall of the drive shaft is respectively mounted with a drive gear and a second crushing roller, the outer wall of the drive gear is meshed with a driven gear, a central shaft is fixedly mounted at the center of the driven gear, and a water supply pipe is rotatably sleeved on the inner wall of the central shaft.
[0008] As a preferred technical solution of the present invention: the outer wall of the central shaft is provided with a water inlet hole, the outer wall of the central shaft is equipped with a crushing roller one, the outer wall of the crushing roller one is provided with a groove, the outer wall of the groove is provided with a water outlet hole, the outer wall of the crushing roller one is provided with a sharp tooth groove, and the outer wall of the crushing roller two is respectively equipped with ultrasonic waves and crushing teeth.
[0009] As a preferred technical solution of the present invention: the cross-section of the first crushing roller is composed of several convex sections connected together, and the cross-section of the second crushing roller is composed of several concave sections connected together; the second drive motor and the ultrasonic wave are both electrically connected to the controller; the crushing teeth mesh with the sharp tooth groove; the first crushing roller and the second crushing roller are located on the inner wall of the crushing bucket; the interior of the first crushing roller is hollow; the end of the water supply pipe away from the first crushing roller is connected to an external high-pressure water pump, and the high-pressure water pump is electrically connected to the controller.
[0010] As a preferred embodiment of the present invention: the filter assembly includes a support plate, a brushless DC motor is mounted on the outer wall of the support plate, a rotating shaft is fixedly mounted on the power output shaft of the brushless DC motor, a limit handle is sleeved on the outer wall of the rotating shaft, a fixed post is rotatably sleeved on the top inner wall of the limit handle, an encoder is mounted on the end of the rotating shaft, a filter screen is sleeved on the bottom of the rotating shaft, a one-way ratchet is provided at the end of the filter screen away from the brushless DC motor, an arc-shaped rack is engaged on the outer wall of the one-way ratchet, and a scraper is fixedly mounted on the bottom of the filter screen.
[0011] As a preferred embodiment of the present invention: an electric telescopic cylinder is fixedly installed at the end of the filter screen away from the controller; a connecting plate is fixedly assembled at the telescopic end of the electric telescopic cylinder; a sealing plate is fixedly assembled at the end of the connecting plate near the electric telescopic cylinder; a conveying pipe is installed inside the filter screen near the electric telescopic cylinder; a feed groove is provided on the outer wall of the conveying pipe; a threaded rod is provided on the inner wall of the conveying pipe; and a conveying pipe is installed at the end of the conveying pipe away from the electric telescopic cylinder.
[0012] As a preferred technical solution of the present invention: the outer wall of the support plate is fixedly connected to the outer wall of the crushing bucket; the arc-shaped rack is fixedly installed on the inner wall of the washing tank, and the arc of the arc-shaped rack is adapted to the arc of the filter screen swing; the filter screen swings around the virtual center line of the rotating shaft; the projected area of the sealing plate is larger than the projected area of the feed trough; the electric telescopic cylinder is electrically connected to the controller; the diameter of the conveying pipe is adapted to the diameter of the connecting slot, and the conveying pipe is clamped to the inner wall of the connecting slot; the filter screen is made of stainless steel.
[0013] As a preferred technical solution of the present invention: the opening and closing assembly includes a fixed plate, a servo motor is installed on the outer wall of the fixed plate, a small gear is fixedly assembled on the power output shaft of the servo motor, a large gear meshes with the outer wall of the small gear, a sliding groove and a through groove are respectively opened on the outer wall of the large gear, a sliding rod is slidably sleeved on the inner wall of the sliding groove, a sliding plate is fixedly installed at the end of the sliding rod near the output pipe, and a square groove is opened at the end of the fixed plate away from the output pipe.
[0014] As a preferred technical solution of the present invention: the servo motor and the controller are electrically connected; there are two of each of the slide groove, slide rod and slide plate, and the two slide grooves, slide rods and slide plates are symmetrically distributed; the large gear rotates on the outer wall of the fixed plate; the slide plate slides on the inner wall of the square groove; and the diameter of the through groove is adapted to the diameter of the output pipe.
[0015] The present invention has the following beneficial effects: 1. This waste recycling equipment for plastic product manufacturing uses a controller to send a signal to rotate the drive shaft. When the drive shaft rotates, the drive gear drives the driven gear to rotate the central shaft in the opposite direction. This causes the waste plastic to fall into the meshing gap between the two rollers and be crushed through meshing. During the crushing process, water is continuously sprayed from the water outlet holes on the outer wall of the crushing roller. This cools the roller body and washes away the impurities generated during the crushing of the waste plastic. At the same time, the ultrasonic waves generate high-frequency vibrations that can peel off stubborn impurities adhering to the plastic surface, improving the cleaning effect.
[0016] 2. This waste recycling equipment for plastic product manufacturing utilizes the reciprocating oscillation of a filter screen. The PLC controller allows for a set default number of oscillations to ensure thorough screening. A signal is then sent to activate the electric telescopic cylinder, which in turn drives the connecting plate to slide closer to the drive wheel. This causes the sealing plate to slide against the outer wall of the conveying pipe, opening the feed chute. The screened plastic scraps, under their own weight and the thrust of the oscillating filter screen, fall into the conveying pipe. The oscillation of the filter screen then rotates a one-way ratchet, which in turn rotates a threaded rod, transporting the plastic scraps towards the plastic collection box. This device can simultaneously screen waste and transport cleaned plastic waste without requiring an additional drive motor, reducing energy consumption and improving work efficiency.
[0017] 3. This waste recycling equipment for plastic product manufacturing uses a controller to send a signal, which causes the rotating shaft to drive the filter screen to oscillate back and forth on the inner wall of the cleaning tank. During the oscillation, the impact force of the water flow filters and screens the crushed waste plastic, allowing sewage and sludge to fall through the filter holes, while the waste plastic remains on the inner wall of the filter screen. Simultaneously, the oscillation of the filter screen drives the scraper to move synchronously, allowing the scraper to transport the sludge from the bottom of the inner wall of the cleaning tank to the inner wall of the sludge collection box through the arc-shaped slope plate. This effectively reduces the turbidity of the water source at the bottom of the filter screen and enables automatic scraping and collection of sludge, preventing filter screen blockage and improving screening efficiency. Attached Figure Description
[0018] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the structure on the other side of the present invention; Figure 3 This is a schematic diagram of the plastic collection box structure of the present invention; Figure 4 This is a schematic diagram of the connecting slot structure of the present invention; Figure 5 This is a schematic diagram of the fixing frame structure of the present invention; Figure 6 This is a schematic diagram of the cross-sectional structure of the present invention; Figure 7 This is a schematic diagram of the crushing component structure of the present invention; Figure 8 This is a schematic diagram of the planar structure of the crushing component of the present invention; Figure 9 This is a schematic diagram of the filter component structure of the present invention; Figure 10 This is a schematic diagram of the arc-shaped rack structure of the present invention; Figure 11 This is a schematic diagram of the arc-shaped slope plate structure of the present invention; Figure 12 This is a schematic diagram of the opening and closing component structure of the present invention; Figure 13 For the present invention Figure 10 Enlarged structural diagram at point A in the middle.
[0019] In the diagram: 1. Cleaning tank; 2. Divider plate; 3. Connecting shell; 4. Controller; 5. Plastic collection box; 6. Crushing assembly; 7. Crushing hopper; 8. Filter assembly; 9. Fixing frame; 10. Discharge port; 11. Rotating ring plate; 12. Connecting slot; 13. Sludge collection shell; 14. Collection trough; 15. Sludge collection box; 16. Arc-shaped slope plate; 17. Conveying cylinder; 18. Discharge hopper; 19. Drive motor one; 20. Screw conveyor; 21. Opening and closing assembly; 22. Output pipe; 601. Drive motor 2; 602. Drive shaft; 603. Drive gear; 604. Driven gear; 605. Central shaft; 606. Water supply pipe; 607. Water inlet; 608. Crushing roller 1; 609. Groove; 610. Water outlet; 611. Sharp tooth groove; 612. Crushing roller 2; 613. Ultrasonic device; 614. Crushing tooth; 801. Support plate; 802. Brushless DC motor; 803. Rotating shaft; 804. Limit handle; 805. Fixing column; 806. Encoder; 807. Filter screen; 808. One-way ratchet; 809. Arc-shaped rack; 810. Scraper; 811. Electric telescopic cylinder; 812. Connecting plate; 813. Sealing plate; 814. Conveying pipe; 815. Feed chute; 816. Threaded rod; 817. Conveying pipe; 2101. Fixed plate; 2102. Servo motor; 2103. Small gear; 2104. Large gear; 2105. Slide groove; 2106. Through groove; 2107. Slide rod; 2108. Slide plate; 2109. Square groove. Detailed Implementation
[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0021] Please see Figure 1 - Figure 13 A waste recycling device for plastic product manufacturing includes a washing tank 1. A dividing plate 2 is installed on the outer wall of the washing tank 1. A connecting shell 3 and a plastic collection box 5 are respectively installed on the outer wall of the dividing plate 2. A controller 4 is fixedly mounted on the outer wall of the connecting shell 3. A crushing component 6 is provided at the end of the washing tank 1 away from the plastic collection box 5. One end of a fixing frame 9 is fixedly installed on both inner walls of the washing tank 1, and the other end of the fixing frame 9 is engaged with a crushing hopper 7. A filter component 8 is provided at the bottom of the crushing hopper 7. A discharge port 10 is fixedly mounted at the bottom of the crushing hopper 7. A rotating ring plate 11 is rotatably sleeved on the inner wall of the dividing plate 2. A connecting groove 12 is opened on the outer wall of the rotating ring plate 11. Sludge collection shells 13 are installed on both outer walls of the cleaning tank 1. A collection trough 14 is opened at one end of the sludge collection shell 13 near the cleaning tank 1. A sludge collection box 15 is slidably connected to the inner wall of the sludge collection shell 13. Arc-shaped slope plates 16 are installed at the bottom of the inner walls of both sides of the cleaning tank 1. A conveying cylinder 17 is installed on the top of the crushing hopper 7. A feeding hopper 18 is sleeved on the outer wall of the conveying cylinder 17. A drive motor 19 is fixedly installed on the top of the conveying cylinder 17. A spiral conveying rod 20 is fixedly assembled on the power output shaft of the drive motor 19. An output pipe 22 is snapped onto the inner wall of the cleaning tank 1 on the side away from the plastic collection box 5. An opening and closing component 21 is provided on the outer wall of the output pipe 22.
[0022] In the above structure, the fixing frame 9 can fix the crushing bucket 7 by setting the fixing frame 9 and the installation position of the fixing frame 9. When fixed, it will not affect the flow of water inside the cleaning tank 1. Due to the setting of the arc-shaped slope plate 16 and the characteristics of the installation position of the arc-shaped slope plate 16, the sludge can be transported through the collection tank 14 to the inner wall of the sludge collection box 15 for recycling through the arc-shaped slope plate 16. In this way, water and sludge can be separated, which can effectively extend the cleanliness of the water source.
[0023] In a preferred embodiment: the conveying cylinder 17 is made of wear-resistant stainless steel, and the inner wall of the conveying cylinder 17 is coated with a polytetrafluoroethylene wear-resistant layer. The drive motor 19 is electrically connected to the controller 4. There are two fixing frames 9 and arc-shaped slope plates 16, and the two fixing frames 9 and arc-shaped slope plates 16 are symmetrically distributed on the inner wall of the cleaning tank 1. The height of the sludge collection box 15 is adapted to the height of the arc-shaped slope plate 16. The conveying cylinder 17 is installed on the top of the crushing hopper 7, and the conveying cylinder 17 is connected to the inside of the crushing hopper 7.
[0024] In the above structure, by feeding waste into the lower hopper 18, when the controller 4 sends a signal to start the drive motor 19, it can be ensured that the waste is fully squeezed by the screw conveyor 20 and pushed into the inner wall of the crushing hopper 7. This ensures that all the waste falls into the crushing area of the inner wall of the crushing hopper 7, reducing the floating of the waste due to its light weight. The drive motor 19 is connected to the screw conveyor 20 through a coupling.
[0025] In a preferred embodiment: the crushing assembly 6 includes a second drive motor 601, the power output shaft of the second drive motor 601 is fixedly mounted with a drive shaft 602, the outer wall of the drive shaft 602 is respectively mounted with a drive gear 603 and a second crushing roller 612, the outer wall of the drive gear 603 is meshed with a driven gear 604, the center of the driven gear 604 is fixedly mounted with a central shaft 605, and the inner wall of the central shaft 605 is rotatably sleeved with a water supply pipe 606.
[0026] In the above structure, the controller 4 sends a signal to start the external high-pressure water pump connected to the end of the water pipe 606 away from the crushing roller 608, and delivers water to the inner wall of the central shaft 605 through the water pipe 606. The water enters the inner wall of the crushing roller 608 through the water inlet 607 and is sprayed through the water outlet 610 to achieve the water spraying function. At the same time, the ultrasonic 613 can be started under the control of the controller 4 and can clean the waste plastic after contacting it. This allows the device to achieve the function of crushing waste plastic while cleaning it. By placing the ultrasonic wave 613 on the outer wall of the crushing roller 612, the ultrasonic wave 613 can achieve close-range ultrasonic action with the crushed waste plastic.
[0027] In a preferred embodiment: the outer wall of the central shaft 605 is provided with a water inlet hole 607, the outer wall of the central shaft 605 is equipped with a crushing roller 608, the outer wall of the crushing roller 608 is provided with a groove 609, the outer wall of the groove 609 is provided with a water outlet hole 610, the outer wall of the crushing roller 608 is provided with a sharp tooth groove 611, and the outer wall of the crushing roller 612 is respectively equipped with an ultrasonic wave 613 and a crushing tooth 614.
[0028] In the above structure, the controller 4 sends a signal to start the second drive motor 601, which causes the drive shaft 602 to drive the drive gear 603 to rotate and cause the driven gear 604 meshing with it to rotate in the opposite direction. This allows the crushing roller 608 and the second crushing roller 612 to mesh with each other to achieve opposing compression and crushing of waste plastic. Because the crushing roller 608 is hollow inside, water can enter its interior and be continuously sprayed out through the water outlet 610. This allows the sprayed water source to directly act on the crushed plastic and use the impact force of the sprayed water source to directly act on the crushed plastic, so that the impurities on the surface of the waste material can be washed away by the impact force of the water source.
[0029] In a preferred embodiment: the cross-section of crushing roller 608 is composed of several convex sections connected together, and the cross-section of crushing roller 612 is composed of several concave sections connected together. The drive motor 601 and the ultrasonic wave 613 are both electrically connected to the controller 4. The crushing teeth 614 mesh with the sharp tooth groove 611. Crushing roller 608 and crushing roller 612 are located on the inner wall of the crushing bucket 7. The interior of crushing roller 608 is hollow. The end of the water pipe 606 away from crushing roller 608 is connected to an external high-pressure water pump, and the high-pressure water pump is electrically connected to the controller 4.
[0030] In the above structure, when the drive shaft 602 rotates, the drive gear 603 drives the driven gear 604 to rotate the central shaft 605 in the opposite direction. This causes the waste plastic to fall into the meshing gap between the two rollers. After the crushing roller 1 608 and the crushing roller 2 612 mesh with each other, the waste plastic can be axially cut to form vertical strips of plastic. The crushing teeth 614 on the outer wall of the crushing roller 2 612 cooperate with the sharp tooth groove 611 of the crushing roller 1 608 to circumferentially cut the vertical strips of plastic to form horizontal strips of plastic. Finally, the resulting uniform square fragments are produced. During the crushing process, the water outlet 610 on the outer wall of the crushing roller 1 608 continuously sprays water, which cools the roller body and washes away the impurities generated during the crushing of the waste plastic. At the same time, the ultrasonic waves 613 generate high-frequency vibrations that can peel off stubborn impurities adhering to the plastic surface, improving the cleaning effect.
[0031] In a preferred embodiment: the filter assembly 8 includes a support plate 801, a brushless DC motor 802 is mounted on the outer wall of the support plate 801, a rotating shaft 803 is fixedly mounted on the power output shaft of the brushless DC motor 802, a limit handle 804 is sleeved on the outer wall of the rotating shaft 803, a fixing post 805 is rotatably sleeved on the top inner wall of the limit handle 804, an encoder 806 is mounted on the end of the rotating shaft 803, a filter screen 807 is sleeved on the bottom of the rotating shaft 803, a one-way ratchet 808 is provided at the end of the filter screen 807 away from the brushless DC motor 802, an arc-shaped rack 809 is engaged on the outer wall of the one-way ratchet 808, and a scraper 810 is fixedly mounted on the bottom of the filter screen 807.
[0032] In the above structure, by embedding a frequency conversion control module on the inner wall of the brushless DC motor 802, and by using military-grade capacitors and incorporating a built-in PID adjustment algorithm, the brushless DC motor 802 and the frequency converter can be integrated into a single design. Embedding the frequency conversion control module into the inner wall of the brushless DC motor 802 can effectively solve the problems of large size and complex wiring of traditional external frequency converters. Furthermore, due to the setting of the encoder 806, it can provide real-time feedback of speed signals, which makes it easier for the controller 4 to control the rotation speed of the rotating shaft 803 to drive the filter screen 807. After filtering for a period of time, the controller 4 can use the PID algorithm to balance the speed and crushing effect, so that the brushless DC motor 802 can automatically increase its speed. This not only enhances the cleaning force of the elastic scraper protrusions, but also does not affect the uniformity of the crushed particle size. This breaks through the single control pain point of traditional speed regulation technology, meets the speed control requirements, improves the overall efficiency of the equipment, and has strong patent novelty and practicality. The oscillation of filter screen 807 itself helps prevent debris from adhering and clogging the filter pores. When filter screen 807 oscillates, it exerts a dynamic force on the square debris falling on it, making it difficult for them to adhere stably to the filter screen and clog the filter pores. In addition, the continuous water flow during the cleaning process also exerts an impact force on the debris on the filter screen, further preventing debris from adhering and clogging the filter pores. This effectively solves the problem of filter screen 807 clogging due to the relatively slow oscillation speed and the resulting turbulence, which makes it difficult to ensure that the plastic sheet adheres to a certain place. At the same time, in actual operation, the design of the position of the feed trough 815 and the amplitude and frequency of the oscillation of filter screen 807 further improve its performance. The rate control ensures that when the filter screen 807 swings towards the conveying pipe 814, the screened plastic fragments tend to fall into the feed trough 815 and enter the conveying pipe 814 under their own weight and the thrust of the swinging filter screen 807. In addition, even if a small amount of fragments fall between the arc-shaped slope plate 16 and the filter screen 807 when the filter screen swings in the opposite direction, due to the presence of the scraper 810, the sludge will fall to the inner wall of the sludge collection box 15 for recycling due to its own weight when scraping off the sludge. Since the fragments are relatively light, they will remain in the water and will not mix with the sludge. This allows these fragments to be scraped back onto the filter screen 807 when the filter screen 807 swings, and continue to participate in the screening. In actual use, the water flow can wash away most of the small stones and sand that may affect the meshing. At the same time, appropriate materials and surface treatment processes can be selected according to the actual use to improve the wear resistance of the one-way ratchet 808 and the arc-shaped rack 809 to cope with the possible impact of impurities. Since the oscillation of the filter screen 807 is a reciprocating motion, it will not easily cause complete jamming and fail to drive the threaded rod 816 or hinder the oscillation of the filter screen 807, effectively extending the normal operation time of the equipment. Meanwhile, by setting up a one-way ratchet 808, the brushless DC motor 802 drives the filter screen 807 to reciprocate, and utilizes the one-way rotation characteristic of the one-way ratchet 808 to realize the transmission of the threaded rod 816.
[0033] In a preferred embodiment: an electric telescopic cylinder 811 is fixedly installed at the end of the filter screen 807 away from the controller 4. A connecting plate 812 is fixedly assembled at the telescopic end of the electric telescopic cylinder 811. A sealing plate 813 is fixedly assembled at the end of the connecting plate 812 near the electric telescopic cylinder 811. A conveying pipe 814 is installed inside the one-way ratchet 808 of the filter screen 807 near the electric telescopic cylinder 811. A feed groove 815 is opened on the outer wall of the conveying pipe 814. A threaded rod 816 is provided on the inner wall of the conveying pipe 814. A conveying pipe 817 is installed at the end of the conveying pipe 814 away from the electric telescopic cylinder 811.
[0034] In the above structure, the controller 4 sends a signal to start the brushless DC motor 802, causing the rotating shaft 803 to rotate. The rotating shaft 803 drives the filter screen 807 to reciprocate at the bottom of the inner wall of the cleaning tank 1. The controller 4 can set a default number of oscillations to ensure sufficient screening. After that, a signal is sent to the PLC, causing the PLC to control the electric telescopic cylinder 811 to start. The telescopic end of the electric telescopic cylinder 811 drives the connecting plate 812 to slide closer to the drive wheel support plate 801. This allows the sealing plate 813 to slide on the outer wall of the conveying pipe 814, opening the feed chute 815. This allows the screened plastic fragments to move under their own weight and the unidirectional axial movement of the filter screen 807. Under the oscillating thrust of wheel 808, the material falls into the interior of conveying pipe 814 through feed chute 815. Subsequently, the oscillation of one-way ratchet 808 under filter screen 807 causes one-way ratchet 808 to rotate, which in turn causes threaded rod 816 to rotate and convey plastic fragments toward plastic collection box 5. At the same time, one-way ratchet 808 engages along the arc of arc rack 809, causing conveying pipe 817 to convey plastic through connecting slot 12 to the interior of plastic collection box 5. After the plastic conveying is completed, the electric telescopic cylinder 811 is retracted by PLC control of controller 4, causing the telescopic end of electric telescopic cylinder 811 to drive sealing plate 813 to slide on the outer wall of conveying pipe 814 and reset to close feed chute 815, waiting for the next round of screening and conveying.
[0035] In a preferred embodiment: the outer wall of the support plate 801 is fixedly connected to the outer wall of the crushing bucket 7, the arc-shaped rack 809 is fixedly installed on the inner wall of the washing tank 1, and the arc of the arc-shaped rack 809 is adapted to the arc of the swing of the filter screen 807. The filter screen 807 swings around the virtual center line of the rotating shaft 803. The projected area of the sealing plate 813 is larger than the projected area of the feed trough 815. The electric telescopic cylinder 811 is electrically connected to the controller 4. The diameter of the conveying pipe 817 is adapted to the diameter of the connecting slot 12, and the conveying pipe 817 is snapped into the inner wall of the connecting slot 12. The filter screen 807 is made of stainless steel.
[0036] In the above structure, the filter screen 807 reciprocates, causing it to swing back and forth against the inner wall of the cleaning tank 1. During this swinging motion, the crushed waste plastic is filtered and screened, and the wastewater and sludge fall downwards, while the waste plastic remains on the inner wall of the filter screen 807. Simultaneously, the reciprocating swing of the filter screen 807 drives the scraper 810 to move synchronously, allowing the scraper 810 to transport the sludge from the bottom of the inner wall of the cleaning tank 1 to the sludge collection box via the arc-shaped ramp 16. The inner wall of 15 ensures that the water at the bottom of the filter screen 807 remains clear at all times. The circular holes on the outer wall of the scraper 810 allow wastewater to pass through without being transported with the sludge. When the scraper 810 scrapes away the transported sludge, it generates opposing forces during the reciprocating motion, preventing the circular holes from becoming clogged. This ensures that the sludge is separated from the water source without wasting water. Finally, the sludge falls into the sludge collection box 15, achieving the separation of impurities from the plastic.
[0037] In a preferred embodiment: the opening and closing assembly 21 includes a fixing plate 2101, a servo motor 2102 is mounted on the outer wall of the fixing plate 2101, a pinion 2103 is fixedly mounted on the power output shaft of the servo motor 2102, a large gear 2104 meshes with the outer wall of the pinion 2103, a sliding groove 2105 and a through groove 2106 are respectively opened on the outer wall of the large gear 2104, a sliding rod 2107 is slidably sleeved on the inner wall of the sliding groove 2105, a sliding plate 2108 is fixedly installed at the end of the sliding rod 2107 near the output pipe 22, and a square groove 2109 is opened at the end of the fixing plate 2101 away from the output pipe 22.
[0038] In a preferred embodiment: the servo motor 2102 is electrically connected to the controller 4, and there are two slides 2105, two slide rods 2107 and two slide plates 2108, and the two slides 2105, two slide rods 2107 and two slide plates 2108 are symmetrically distributed. The large gear 2104 rotates on the outer wall of the fixed plate 2101, the slide plate 2108 slides on the inner wall of the square groove 2109, and the diameter of the through groove 2106 is adapted to the diameter of the output pipe 22.
[0039] In the above structure, the servo motor 2102 can be started by the controller 4, which causes the pinion 2103 to rotate. After meshing with the large gear 2104, the pinion 2103 rotates on the outer wall of the fixed plate 2101. This causes the slide bar 2107 to slide on the inner wall of the slide groove 2105, and the slide plate 2108 to move to both sides on the inner wall of the square groove 2109. This allows the through groove 2106 to be connected to the inner wall of the output pipe 22, so that the water after cleaning can be quickly discharged after use through the connection between the two.
[0040] Working principle: When using this device, the plastic waste to be recycled is poured onto the inner wall of the hopper 18. The controller 4 sends a signal to start the drive motor 19, which drives the screw conveyor 20 to rotate on the inner wall of the conveying cylinder 17. This ensures that the waste is fully compressed by the screw conveyor 20 and pushed into the inner wall of the crushing hopper 7, thus ensuring that all the waste falls accurately into the crushing area of the inner wall of the crushing hopper 7, reducing the floating of the waste due to its light weight. When waste falls into the inner wall of the crushing bucket 7, the controller 4 can send a signal to start the second drive motor 601, which causes the drive shaft 602 to drive the drive gear 603 to rotate and the driven gear 604 meshing with it to rotate in the opposite direction. This allows the crushing roller 608 and the crushing roller 612 to mesh with each other to achieve opposite compression and crushing of waste plastic. Because the crushing roller 608 is hollow inside, it can temporarily store the water source supplied by the water pipe 606 through the water inlet 607 and spray it outward through the water outlet 610, so that the sprayed water source can directly act on the plastic crushing area. Simultaneously, when the drive shaft 602 rotates, the drive gear 603 drives the driven gear 604 to rotate the central shaft 605 in the opposite direction. This causes the waste plastic to fall into the meshing gap between the two rollers. After the crushing roller 1 608 and the crushing roller 2 612 mesh with each other, the waste plastic can be axially cut to form vertical strips of plastic. The crushing teeth 614 on the outer wall of the crushing roller 2 612 cooperate with the circumferential sharp tooth groove 611 of the crushing roller 1 608 to circumferentially cut the vertical strips of plastic to form horizontal strips of plastic. Finally, the uniform square fragments fall into the inner wall of the filter screen 807 through the discharge port 10. The reciprocating motion of the filter screen 807 causes it to oscillate against the inner wall of the cleaning tank 1. During this oscillation, the crushed waste plastic is filtered and screened, and the sewage and sludge fall downwards, while the waste plastic remains on the inner wall of the filter screen 807. Simultaneously, the reciprocating motion of the filter screen 807 drives the scraper 810 to move synchronously. The scraper 810 transports the sludge at the bottom of the inner wall of the cleaning tank 1 through the arc-shaped slope plate 16 to the inner wall of the sludge collection box 15, ensuring that the water at the bottom of the filter screen 807 remains clear. The circular holes on the outer wall of the scraper 810 allow sewage to be filtered out without being transported synchronously with the sludge. When the scraper 810 scrapes and transports the sludge, it generates a counterforce during the reciprocating motion, preventing the circular holes from becoming clogged. Furthermore, through the reciprocating oscillation of the filter screen 807 and the PLC settings of the controller 4, a default number of oscillations can be set to ensure sufficient screening. Afterward, a signal is sent to the PLC, causing the PLC to control the electric telescopic cylinder 811 to start. The telescopic end of the electric telescopic cylinder 811 drives the connecting plate 812 to slide closer to the support plate 801. This allows the sealing plate 813 to slide against the outer wall of the conveying pipe 814, opening the feed chute 815. This allows the screened plastic fragments to fall into the conveying pipe 814 through the feed chute 815 under their own weight and the thrust of the oscillating filter screen 807. Then, under the swing of the filter screen 807, the one-way ratchet 808 can rotate, which can rotate the threaded rod 816 and convey the plastic fragments towards the plastic collection box 5. At the same time, the one-way ratchet 808 engages along the arc of the arc rack 809, which causes the conveying pipe 817 to convey the plastic through the connecting slot 12 to the inside of the plastic collection box 5. After the plastic conveying is completed, the electric telescopic cylinder 811 is retracted by the PLC of the controller 4, which causes the telescopic end of the electric telescopic cylinder 811 to drive the sealing plate 813 to slide on the outer wall of the conveying round pipe 814 and reset to close the feed chute 815, waiting for the next round of screening and conveying. During the screening process, the sludge is pushed along the arc of the curved slope plate 16 by the scraper 810 and falls into the inner wall of the sludge collection box 15 through the collection trough 14 for collection, so that the water source at the bottom area of the filter screen 807 remains clean. After the crushing, washing and screening of the waste are completed, the controller 4 can send a signal to start the servo motor 2102, so that the pinion 2103 rotates and drives the pinion 2104 to rotate on the outer wall of the fixed plate 2101 after meshing with the large gear 2104. This allows the slide bar 2107 to slide on the inner wall of the slide groove 2105, and the slide plate 2108 to move to both sides on the inner wall of the square groove 2109. This allows the through groove 2106 to be connected to the inner wall of the output pipe 22, so that the water source after cleaning can be quickly discharged after use through the connection between the two. The cleaned plastic inside the plastic collection box 5 can be taken out with tools and other steps can be continued. All functions of the device are integrated inside the washing tank 1, realizing the full automation of plastic waste conveying, crushing, washing, screening and impurity removal. The special structure of the double crushing rollers enables the horizontal and vertical bidirectional crushing of plastic, improving the crushing uniformity. At the same time, the power linkage of the crushing component 6 to the filter component 8 is used to meet the needs of efficient recycling and pretreatment of contaminated plastic waste.
[0041] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0042] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A waste recycling device for plastic product manufacturing, comprising a cleaning tank (1), characterized in that: The outer wall of the cleaning tank (1) is equipped with a partition plate (2). The outer wall of the partition plate (2) is respectively equipped with a connecting shell (3) and a plastic collection box (5). The outer wall of the connecting shell (3) is fixedly equipped with a controller (4). The end of the cleaning tank (1) away from the plastic collection box (5) is provided with a crushing component (6). The inner walls of both sides of the cleaning tank (1) are fixedly installed with one end of a fixing frame (9), and the other end of the fixing frame (9) is snapped with a crushing bucket (7). The bottom of the crushing bucket (7) is provided with a filter component (8). Arc-shaped ramps (16) are installed on the bottom of the inner walls on both sides of the pool body (1). A conveying cylinder (17) is installed on the top of the crushing bucket (7). A feeding hopper (18) is sleeved on the outer wall of the conveying cylinder (17). A drive motor (19) is fixedly installed on the top of the conveying cylinder (17). A spiral conveying rod (20) is fixedly assembled on the power output shaft of the drive motor (19). An output pipe (22) is snapped onto the inner wall of the side of the cleaning pool body (1) away from the plastic collection box (5). An opening and closing component (21) is provided on the outer wall of the output pipe (22).
2. The waste recycling equipment for plastic product manufacturing according to claim 1, characterized in that: Both outer walls of the cleaning tank (1) are equipped with sludge collection shells (13). A collection trough (14) is provided at one end of the sludge collection shell (13) near the cleaning tank (1). A sludge collection box (15) is slidably connected to the inner wall of the sludge collection shell (13). The conveying cylinder (17) is made of wear-resistant stainless steel, and its inner wall is coated with a polytetrafluoroethylene wear-resistant layer. The drive motor (19) is electrically connected to the controller (4). There are two fixed frames (9) and two curved slope plates (16), and the two fixed frames (9) and two curved slope plates (16) are symmetrically distributed on the inner wall of the cleaning tank (1). The height of the sludge collection box (15) is adapted to the height of the curved slope plate (16). The bottom of the crushing bucket (7) is fixedly installed with a discharge port (10). The inner wall of the dividing plate (2) is rotatably connected with a rotating ring plate (11). The outer wall of the rotating ring plate (11) is provided with a connecting groove (12).
3. The waste recycling equipment for plastic product manufacturing according to claim 1, characterized in that: The crushing assembly (6) includes a second drive motor (601), the power output shaft of the second drive motor (601) is fixedly fitted with a drive shaft (602), the outer wall of the drive shaft (602) is respectively fitted with a drive gear (603) and a second crushing roller (612), the outer wall of the drive gear (603) is meshed with a driven gear (604), the center of the driven gear (604) is fixedly installed with a central shaft (605), and the inner wall of the central shaft (605) is rotatably sleeved with a water supply pipe (606).
4. The waste recycling equipment for plastic product manufacturing according to claim 3, characterized in that: The outer wall of the central shaft (605) is provided with a water inlet hole (607), the outer wall of the central shaft (605) is equipped with a crushing roller (608), the outer wall of the crushing roller (608) is provided with a groove (609), the outer wall of the groove (609) is provided with a water outlet hole (610), the outer wall of the crushing roller (608) is provided with a sharp tooth groove (611), and the outer wall of the crushing roller (612) is respectively equipped with an ultrasonic wave (613) and a crushing tooth (614).
5. The waste recycling equipment for plastic product manufacturing according to claim 4, characterized in that: The cross-section of the first crushing roller (608) is connected in several "convex" sections, and the cross-section of the second crushing roller (612) is connected in several "concave" sections. The second drive motor (601) and the ultrasonic wave (613) are electrically connected to the controller (4). The crushing tooth (614) meshes with the sharp tooth groove (611). The first crushing roller (608) and the second crushing roller (612) are located on the inner wall of the crushing bucket (7). The interior of the first crushing roller (608) is hollow. The end of the water pipe (606) away from the first crushing roller (608) is connected to an external high-pressure water pump, and the high-pressure water pump is electrically connected to the controller (4).
6. The waste recycling equipment for plastic product manufacturing according to claim 1, characterized in that: The filter assembly (8) includes a support plate (801), a brushless DC motor (802) is mounted on the outer wall of the support plate (801), a rotating shaft (803) is fixedly mounted on the power output shaft of the brushless DC motor (802), a limit handle (804) is sleeved on the outer wall of the rotating shaft (803), a fixed column (805) is rotatably sleeved on the top inner wall of the limit handle (804), an encoder (806) is mounted on the end of the rotating shaft (803), a filter screen (807) is sleeved on the bottom of the rotating shaft (803), a one-way ratchet (808) is provided at the end of the filter screen (807) away from the brushless DC motor (802), an arc-shaped rack (809) is engaged on the outer wall of the one-way ratchet (808), and a scraper (810) is fixedly mounted on the bottom of the filter screen (807).
7. The waste recycling equipment for plastic product manufacturing according to claim 6, characterized in that: An electric telescopic cylinder (811) is fixedly installed at the end of the filter screen (807) away from the controller (4). A connecting plate (812) is fixedly installed at the telescopic end of the electric telescopic cylinder (811). A sealing plate (813) is fixedly installed at the end of the connecting plate (812) near the electric telescopic cylinder (811). A conveying pipe (814) is installed inside the filter screen (807) near the electric telescopic cylinder (811). A feed groove (815) is opened on the outer wall of the conveying pipe (814). A threaded rod (816) is provided on the inner wall of the conveying pipe (814). A conveying pipe (817) is installed at the end of the conveying pipe (814) away from the electric telescopic cylinder (811).
8. The waste recycling equipment for plastic product manufacturing according to claim 7, characterized in that: The outer wall of the support plate (801) is fixedly connected to the outer wall of the crushing bucket (7). The arc-shaped rack (809) is fixedly installed on the inner wall of the washing tank (1), and the arc of the arc-shaped rack (809) is adapted to the arc of the filter screen (807). The filter screen (807) swings around the virtual center line of the rotating shaft (803). The projected area of the sealing plate (813) is larger than the projected area of the feed trough (815). The electric telescopic cylinder (811) is electrically connected to the controller (4). The diameter of the conveying pipe (817) is adapted to the diameter of the connecting slot (12), and the conveying pipe (817) is clamped to the inner wall of the connecting slot (12). The filter screen (807) is made of stainless steel.
9. The waste recycling equipment for plastic product manufacturing according to claim 1, characterized in that: The opening and closing assembly (21) includes a fixed plate (2101), a servo motor (2102) is installed on the outer wall of the fixed plate (2101), a small gear (2103) is fixedly mounted on the power output shaft of the servo motor (2102), a large gear (2104) meshes with the outer wall of the small gear (2103), a sliding groove (2105) and a through groove (2106) are respectively opened on the outer wall of the large gear (2104), a sliding rod (2107) is slidably sleeved on the inner wall of the sliding groove (2105), a sliding plate (2108) is fixedly installed on the end of the sliding rod (2107) near the output pipe (22), and a square groove (2109) is opened on the end of the fixed plate (2101) away from the output pipe (22).
10. A waste recycling device for plastic product manufacturing according to claim 9, characterized in that: The servo motor (2102) is electrically connected to the controller (4). There are two slides (2105), two slide rods (2107), and two slide plates (2108). The two slides (2105), two slide rods (2107), and two slide plates (2108) are symmetrically distributed. The large gear (2104) rotates on the outer wall of the fixed plate (2101). The slide plate (2108) slides on the inner wall of the square groove (2109). The diameter of the through groove (2106) is adapted to the diameter of the output pipe (22).