Multi-mechanism collaborative plastic waste recovery equipment and method

Abstract

The invention provides multi-mechanism collaborative plastic waste recovery equipment and method, and relates to the technical field of waste treatment equipment, the equipment comprises a recovery box, a crushing mechanism, a separation mechanism and a cleaning assembly; the crushing mechanism comprises a shell, a motor, a belt pulley and a crushing roller; the separating mechanism comprises a collecting cover, a separating hole, a conveying pipe, a collecting box and a negative pressure fan; the cleaning assembly comprises a connecting rod and a cleaning rod, and the cleaning rod makes contact with the inner wall of the collecting cover. The method comprises the four steps of intelligent material identification, dynamic adjustable crushing, multi-stage separation and collection and automatic cleaning and maintenance. Through cooperation of the crushing mechanism, the separating mechanism and the cleaning assembly, efficient separation of plastic particles is achieved; impurity accumulation is prevented through an automatic cleaning mechanism; the energy consumption is reduced through power reuse; and the automation level and adaptability of the equipment are improved through multi-stage intelligent control, and the problems of low separation efficiency and difficult maintenance in the prior art are effectively solved.

Description

Technical Field

[0001] The present invention relates to the technical field of waste treatment equipment, and in particular to a multi-mechanism coordinated plastic waste recycling device and method. Background Art

[0002] In today's society, with the improvement of people's living standards and the acceleration of industrialization, plastic products, due to their lightweight, durable, and low-cost properties, are widely used in packaging, construction, electronics, and other fields. However, the continuous increase in the use of plastic products has also led to an explosive growth in the generation of plastic waste. According to relevant statistics, hundreds of millions of tons of plastic waste are generated globally each year. If this waste is not properly handled, it will cause serious environmental and ecological problems.

[0003] To address the environmental issues caused by plastic waste, countries around the world are actively promoting plastic recycling, with plastic recycling equipment playing a crucial role in this process. Currently, the plastic waste recycling equipment on the market mainly includes pulverizers, extruders, and sorters. While these devices can generally achieve basic plastic waste processing, they still have many technical deficiencies.

[0004] First, existing recycling equipment lacks efficient separation methods during the pulverization process. Traditional pulverization equipment often focuses solely on the plastic crushing process, lacking effective separation of the pulverized particles. This results in the mixing of plastic particles of varying sizes and materials, making precise separation difficult. This not only reduces the quality of the recycled plastic but also increases the difficulty and cost of subsequent processing.

[0005] Secondly, during the separation process, impurities easily accumulate on the surface of the filter, and existing equipment generally lacks convenient and efficient cleaning mechanisms. Over time, these impurities gradually accumulate on the filter surface, blocking the filter pores, reducing separation efficiency, and even causing the entire system to malfunction. Traditional equipment often requires manual cleaning, which not only increases labor costs but also reduces the equipment's ability to operate continuously.

[0006] Furthermore, existing plastic recycling equipment lacks effective coordination between its various functional modules, often operating independently and making it difficult to form a closed-loop processing system. The fragmented nature of crushing, separation, and cleaning processes prevents coordinated power and control, leading to low overall processing efficiency and increased energy consumption.

[0007] The existence of the above-mentioned technical problems not only reduces the processing efficiency of plastic recycling equipment and shortens the service life of the equipment, but also increases the operating cost and maintenance difficulty of the equipment, and cannot meet the growing demand for plastic waste treatment. Summary of the Invention

[0008] The purpose of the present invention is to provide a multi-mechanism coordinated plastic waste recycling device and method, which can achieve efficient separation, automatic cleaning and coordinated work of various parts.

[0009] To achieve the above object, the present invention is implemented through the following technical solutions: A plastic waste recycling device with multiple mechanisms working together includes a recycling box, the inner cavity of the recycling box is provided with a crushing mechanism, the bottom of the recycling box is connected to a separation mechanism and a cleaning assembly, the separation mechanism includes a collection hood, a conveying pipe, a collection box and a negative pressure fan, one side of the collection hood is connected to the recycling box, the inner cavity of the collection hood is provided with a separation hole, one end of the conveying pipe is connected to the collection hood, and the other end is connected to the collection box, the negative pressure fan is connected to the collection box, and the cleaning assembly includes a connecting rod and a cleaning rod, one end of the connecting rod is movably connected to the recycling box, and the other end is connected to the cleaning rod, and the cleaning rod is in contact with the inner wall of the collection hood.

[0010] Furthermore: the crushing mechanism includes a shell, one side of the shell is fixedly connected to the recycling box, and the other side of the shell is provided with a motor, the output end of the motor is connected to the second pulley, one end of the connecting rod is fixedly connected to the first pulley, and the second pulley is connected to the first pulley through a belt.

[0011] Furthermore, the shredding mechanism further includes a first rotating rod and a second rotating rod. One end of the first rotating rod is connected to the second pulley, and the other end extends through the housing and into the interior of the recycling bin. A first gear is provided on the surface of the first rotating rod, and a first shredding roller is provided on the end of the first rotating rod away from the first gear. A second gear is provided on the surface of the second rotating rod that meshes with the first gear. One end of the second rotating rod extends into the interior of the recycling bin, and a second shredding roller is provided on one end of the second rotating rod. The first rotating rod, the second rotating rod, the gear transmission system, and the shredding rollers work together to shred plastic waste.

[0012] Furthermore, a fixing bracket is provided on one side of the housing where the motor is provided, and the fixing bracket is fixedly connected to the motor. The structure of the connection between the fixing bracket and the motor enhances the stability of the motor installation.

[0013] Furthermore, the bottom of the recycling box is provided with a support, and the bottom of the support is provided with a pad. The structure of the support and the pad improves the stability of the equipment.

[0014] Furthermore, a bottom plate is provided on one side of the collection box, and the bottom plate is fixedly connected to the support. The structure of the connection between the bottom plate and the support makes the overall structure of the device more compact and reasonable.

[0015] Furthermore, the bottom of the recovery box is connected to a discharge hopper, which is an inclined structure, so that the crushed materials can be discharged smoothly by gravity.

[0016] Furthermore, a cover plate is hingedly connected to the surface of the collection box, and a pull rod is provided on one side of the cover plate surface, so as to facilitate the cleaning of the plastic particles in the collection box.

[0017] The present invention also provides a plastic waste recycling method applied to the above-mentioned multi-mechanism coordinated plastic waste recycling equipment, comprising the following steps: S1: Material pre-processing and intelligent identification: Scan plastic waste with a hyperspectral imaging sensor, use AI algorithms to identify plastic types and impurities, and generate corresponding crushing parameters and separation strategies based on the identification results; S2: Dynamically adjustable crushing process: The motor speed is adjusted according to the hardness of the material, and the transmission load is monitored in real time through the torque sensor, automatically adjusting the motor torque output and the rotation frequency of the cleaning rod; S3: Multi-stage intelligent separation and classified collection: By controlling the start and stop of the negative pressure fan, the classified collection of products at different stages is achieved, including the cycle of starting the fan to collect fine particles and stopping the fan to discharge coarse particles; S4: Automatic cleaning and system maintenance: The cleaning program is triggered by the inner wall dust sensor, which drives the cleaning rod to rotate and clean the inner wall of the collection cover to ensure the unobstructed separation hole.

[0018] Furthermore, in step S1, the hyperspectral sensor samples the reflection spectrum of the plastic surface, obtains the spectral feature vector in the 400-2500nm band, and processes it through an improved spectrum recognition network based on the convolutional attention mechanism.

[0019] Furthermore: in step S2, the motor is a variable frequency servo motor with a rotation speed range of 500-1500 r / min, which is automatically adjusted according to the hardness of the material through the control system.

[0020] Furthermore, in step S3, the start and stop of the negative pressure fan are divided into two stages: stage 1 is when the fan is started, collecting fine particles smaller than 5 mm, which lasts for 3 minutes; stage 2 is when the fan is stopped, discharging coarse particles larger than 5 mm, which lasts for 2 minutes; the two stages are cyclically operated.

[0021] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention forms a complete plastic waste recycling and processing system through the coordinated cooperation of a crushing mechanism, a separation mechanism, and a cleaning component. The negative pressure environment generated by the negative pressure blower cooperates with the separation holes in the collection hood, allowing plastic particles smaller than the separation hole diameter to enter the conveying pipe and ultimately be collected in the collection box, while fragments larger than the separation hole diameter are discharged through the discharge hopper. This achieves efficient separation of the crushed plastic particles, ensuring uniform specifications for the plastic particles entering subsequent processing, improving the recycling quality and reuse value, and effectively solving the problem of the lack of efficient separation methods in existing recycling equipment.

[0022] Second, in the cleaning assembly of the present invention, the cleaning rod contacts and continuously scrapes the inner wall of the collection hood, preventing the accumulation of impurities such as plastic particles on the inner wall of the collection hood, ensuring the unobstructed flow of the separation holes and maintaining the efficient operation of the separation mechanism. This automatic cleaning method reduces the frequency of manual maintenance, extends the service life of the equipment, and reduces equipment maintenance costs. It effectively solves the problem of impurities easily remaining on the surface of the filter hood and lacking a cleaning mechanism in the prior art.

[0023] 3. The present invention cleverly utilizes the belt drive system so that the power of the motor drives the crushing mechanism and the cleaning component at the same time, realizing power reuse, reducing the number of power devices, reducing equipment costs and energy consumption, and simplifying the overall structural layout, making the equipment more compact and efficient.

[0024] Fourth, the recycling method of this invention utilizes hyperspectral imaging sensors and AI algorithms to achieve intelligent material identification, dynamically adjusting crushing parameters and separation strategies accordingly, improving the equipment's adaptability to different plastic types and processing efficiency. Furthermore, a multi-stage intelligent separation and classified collection strategy, along with a sensor-triggered automated cleanup process, further enhances the system's automation level and operational stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A three-dimensional diagram of a multi-agency collaborative plastic waste recycling facility; Figure 2 A side perspective view of a multi-organization collaborative plastic waste recycling device; Figure 3 A three-dimensional diagram of a pulverizing mechanism in a multi-mechanism coordinated plastic waste recycling device; Figure 4 A multi-agency plastic waste recycling facility Figure 3 A magnified view of point A; Figure 5 A cross-sectional view of a shell of a multi-organization collaborative plastic waste recycling device; Figure 6 A schematic flow chart of a multi-agency collaborative plastic waste recycling method; In the picture: 1. Recycling box; 2. Crushing mechanism; 201. Housing; 202. Motor; 203. Second pulley; 204. First rotating rod; 205. First gear; 206. First crushing roller; 207. Second rotating rod; 208. Second crushing roller; 3. Separating mechanism; 301. Collection cover; 302. Separation hole; 303. Conveying pipe; 304. Collection box; 305. Negative pressure fan; 4. Cleaning assembly; 401. Connecting rod; 402. First pulley; 403. Cleaning rod; 5. Fixed frame; 6. Support; 7. Bottom plate; 8. Discharge hopper; 9. Cover plate. DETAILED DESCRIPTION

[0026] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0027] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0028] The present invention provides a multi-mechanism coordinated plastic waste recycling device, comprising a recycling box 1, an inner cavity of the recycling box 1 is provided with a crushing mechanism 2, and the bottom of the recycling box 1 is connected to a separation mechanism 3 and a cleaning component 4.

[0029] The separation mechanism 3 includes a collection hood 301, a conveying pipe 303, a collection box 304, and a negative pressure blower 305. One side of the collection hood 301 is connected to the recovery box 1. A separation hole 302 is defined in the inner cavity of the collection hood 301. One end of the conveying pipe 303 is connected to the collection hood 301, and the other end is connected to the collection box 304. The negative pressure blower 305 is also connected to the collection box 304. The collection hood 301 is primarily used to receive the crushed plastic particles from the recovery box 1. When the negative pressure blower 305 is activated, a negative pressure environment is formed within the collection hood 301, the conveying pipe 303, and the collection box 304. Under the action of the negative pressure, the crushed plastic particles, which are smaller than the separation hole 302, pass through the separation hole 302 into the conveying pipe 303 and are ultimately collected in the collection box 304. Particles larger than the separation hole 302 remain in the recovery box 1 and are discharged through the discharge hopper 8, thereby achieving the purpose of separating the crushed plastic particles.

[0030] The cleaning assembly 4 includes a connecting rod 401 and a cleaning rod 403. One end of the connecting rod 401 is movably connected to the recycling box 1, and the other end is connected to the cleaning rod 403. The cleaning rod 403 contacts the inner wall of the collection cover 301. The cleaning rod 403 continuously scrapes and cleans the inner wall of the collection cover 301, preventing impurities such as plastic particles from accumulating on the inner wall of the collection cover 301, ensuring the unobstructed separation hole 302, maintaining the efficient operation of the separation mechanism 3, and reducing equipment failures and maintenance frequency caused by impurity accumulation.

[0031] In one embodiment of the present invention, the shredder mechanism 2 includes a housing 201, one side of which is fixedly connected to the recycling bin 1. A motor 202 is mounted on one side of the housing 201. The output end of the motor 202 is connected to a second pulley 203. One end of a connecting rod 401 is fixedly connected to a first pulley 402. The second pulley 203 is connected to the first pulley 402 via a belt. This structural design achieves clever power reuse, reduces the number of power units, lowers equipment costs and energy consumption, and simplifies the overall structural layout.

[0032] Furthermore, the pulverizing mechanism 2 also includes a first rotating rod 204 and a second rotating rod 207. One end of the first rotating rod 204 is connected to the second pulley 203, and the other end extends through the housing 201 and into the inner cavity of the recycling bin 1. A first gear 205 is provided on the surface of the first rotating rod 204, and a first pulverizing roller 206 is provided on the end of the first rotating rod 204 away from the first gear 205. A second gear meshing with the first gear 205 is provided on the surface of the second rotating rod 207. One end of the second rotating rod 207 extends into the inner cavity of the recycling bin 1, and a second pulverizing roller 208 is provided on one end of the second rotating rod 207. The first and second pulverizing rollers 206 and 208, driven by the motor 202 and meshing with the gears, can fully pulverize the plastic waste through extrusion and shearing.

[0033] In one embodiment of the present invention, a fixing bracket 5 is provided on one side of the housing 201, and one side of the fixing bracket 5 is fixedly connected to the motor 202. The fixing bracket 5 can effectively disperse the vibration generated by the motor 202 during operation and enhance the stability of the motor 202 installation.

[0034] In one embodiment of the present invention, a support 6 is provided at the bottom of the recycling bin 1, and a pad is provided at the bottom of the support 6. The support 6 and the pad at the bottom elevate the recycling bin 1 and distribute the weight of the device, thereby increasing the contact area between the device and the ground and enhancing the device's ability to resist tilting and shaking.

[0035] In one embodiment of the present invention, a bottom plate 7 is provided on one side of the collection box 304, and the bottom plate 7 is fixedly connected to the support 6. The connection between the bottom plate 7 and the support 6 combines the collection box 304 with the support structure at the bottom of the recycling box 1, making the overall structure of the device more compact and reasonable.

[0036] In one embodiment of the present invention, the bottom of the recovery bin 1 is connected to a discharge hopper 8, which has an inclined structure. The discharge hopper 8 utilizes gravity to allow the crushed material to be quickly and smoothly discharged from the recovery bin 1, effectively preventing material from accumulating inside the recovery bin 1 and preventing material blockage that could affect the normal operation of the crushing mechanism 2.

[0037] In one embodiment of the present invention, a cover plate 9 is hingedly connected to the surface of the collection box 304, and a pull rod is provided on one side of the surface of the cover plate 9. The pull rod can be used to easily open and close the cover plate 9, making it convenient to clean the plastic particles in the collection box 304.

[0038] The working principle of the present invention is as follows: plastic waste is placed into the recycling bin 1, and the motor 202 is started, which drives the second pulley 203 to rotate. Since the second pulley 203 is connected to the first pulley 402 via a belt, when the motor 202 drives the second pulley 203 to rotate, it also drives the first pulley 402 to rotate, thereby achieving power reuse. The second pulley 203 drives the first rotating rod 204 to rotate, and the first gear 205 on the surface of the first rotating rod 204 meshes with the second gear on the second rotating rod 207, so that the first rotating rod 204 and the second rotating rod 207 rotate at different speeds, thereby driving the first crushing roller 206 and the second crushing roller 208 to fully crush the plastic waste in the recycling bin 1 through extrusion and shearing.

[0039] The crushed plastic particles move to the bottom of the recycling box 1 under the action of their own gravity. At this time, the negative pressure fan 305 is started to form a negative pressure environment in the collection cover 301, the conveying pipe 303 and the collection box 304. Under the action of negative pressure suction, the crushed plastic particles, which are smaller than the aperture of the separation hole 302 in the inner cavity of the collection cover 301, enter the conveying pipe 303 through the separation hole 302, and are then conveyed to the collection box 304 for collection, while the fragments larger than the aperture of the separation hole 302 remain in the recycling box 1 and are finally discharged through the discharge hopper 8. This separation method can accurately separate plastic particles of different particle sizes.

[0040] The connecting rod 401 rotates due to the rotation of the first pulley 402, and the cleaning rod 403 rotates accordingly, continuously scraping and cleaning the inner wall of the collection cover 301, which can prevent impurities such as plastic particles from accumulating on the inner wall of the collection cover 301, ensure the unobstructed separation hole 302, maintain the efficient operation of the separation mechanism 3, and reduce equipment failures and maintenance frequency caused by impurity accumulation.

[0041] In practical applications, the present invention also provides a multi-mechanism collaborative plastic waste recycling method, comprising the following steps: S1: Material Preprocessing and Intelligent Identification: Plastic waste is transported via a conveyor belt to the inlet of recycling bin 1. A hyperspectral imaging sensor is installed above the inlet to scan the material surface and identify the plastic type (such as PET, PE, PP, etc.) and impurities (such as metals) using an AI algorithm. The hyperspectral sensor performs high-dimensional sampling of the plastic surface reflectance spectrum, obtaining spectral feature vectors in the 400-2500nm band. These vectors are then fed into an improved spectral recognition network based on a convolutional attention mechanism. This network incorporates a spectral residual block to perform weighted reconstruction of key spectral segments, enhancing material differentiation. The recognition results are then fed into a material property mapping function, which is then used by the control system to generate corresponding crushing and separation strategies.

[0042] S2: Dynamically Adjustable Crushing Process: The motor is a variable-frequency servo motor. The control system adjusts the speed of motor 202 (range: 500-1500 rpm) based on the material hardness (associated with the identification results). A torque sensor is installed between the first pulley 402 and the second pulley 203 to monitor the transmission load in real time. If the load exceeds a threshold, the control system automatically increases the torque output of motor 202, adjusts the rotation frequency of the cleaning rod 403, and uses the frequency converter to adjust the speed of the connecting rod 401 to prevent belt slippage.

[0043] S3: Multi-stage intelligent separation and classified collection: The fan is started and stopped to achieve product classification at different stages. Stage 1 (coarse crushing): The fan is on, collecting fine particles smaller than 5mm into collection bin 304 (lasting 3 minutes). Stage 2 (fine crushing): The fan is stopped, and only coarse particles larger than 5mm are discharged through discharge hopper 8 (lasting 2 minutes). The loop logic: Stage 1 → Stage 2 → Stage 1, reciprocating until manually stopped, achieving time-sequential separation of coarse and fine particles.

[0044] S4: Automated Cleaning and System Maintenance: The scraping frequency of cleaning rod 403 is triggered by the inner wall dust sensor. When the dust concentration on the inner wall of collection hood 301 exceeds a threshold (e.g., 50 mg / m³), the control system initiates the cleaning process, driving connecting rod 401 to rotate back and forth at 10 rpm for three minutes, then automatically stops after cleaning. Cleaning rod 403 is made of conductive rubber and has a built-in micro-vibration module that vibrates synchronously with the scraping process, enhancing the removal of adhering particles while preventing electrostatic adsorption.

[0045] The above embodiments are intended only to illustrate the technical concepts and features of the present invention. Their purpose is to enable those skilled in the art to understand the contents of the present invention and implement them accordingly. They are not intended to limit the scope of protection of the present invention. Any equivalent changes or modifications made in accordance with the spirit of the present invention are intended to be covered by the scope of protection of the present invention.

Claims

1. A multi-mechanism collaborative plastic waste recycling device, characterized in that: It includes a recycling box, the inner cavity of the recycling box is provided with a crushing mechanism, the bottom of the recycling box is connected to a separation mechanism and a cleaning assembly, the separation mechanism includes a collecting hood, a conveying pipe, a collecting box and a negative pressure fan, one side of the collecting hood is connected to the recycling box, the inner cavity of the collecting hood is provided with a separation hole, one end of the conveying pipe is connected to the collecting hood, and the other end is connected to the collecting box, the negative pressure fan is connected to the collecting box, the cleaning assembly includes a connecting rod and a cleaning rod, one end of the connecting rod is movably connected to the recycling box, and the other end is connected to the cleaning rod, and the cleaning rod is in contact with the inner wall of the collecting hood.

2. The multi-mechanism coordinated plastic waste recycling equipment according to claim 1, characterized in that: The crushing mechanism includes a shell, one side of the shell is fixedly connected to the recycling box, and the other side of the shell is provided with a motor, the output end of the motor is connected to the second pulley, one end of the connecting rod is fixedly connected to the first pulley, and the second pulley is connected to the first pulley through a belt; the side of the shell where the motor is provided is also provided with a fixing frame, and the fixing frame is fixedly connected to the motor.

3. The multi-mechanism coordinated plastic waste recycling equipment according to claim 2, characterized in that: The crushing mechanism also includes a first rotating rod and a second rotating rod, one end of the first rotating rod is connected to the second pulley, and the other end passes through the outer shell and extends to the inner cavity of the recycling box, a first gear is provided on the surface of the first rotating rod, and a first crushing roller is provided at the end of the first rotating rod away from the first gear, and a second gear meshing with the first gear is provided on the surface of the second rotating rod, one end of the second rotating rod passes through the inner cavity of the recycling box, and a second crushing roller is provided at one end of the second rotating rod.

4. The multi-mechanism coordinated plastic waste recycling equipment according to claim 1, characterized in that: The bottom of the recycling box is provided with a support column, and the bottom of the support column is provided with a cushion block; one side of the collection box is provided with a bottom plate, and the bottom plate is fixedly connected to the support column.

5. The multi-mechanism coordinated plastic waste recycling equipment according to claim 1, characterized in that: The bottom of the recovery box is connected to a discharge hopper, and the discharge hopper is an inclined structure.

6. The multi-mechanism coordinated plastic waste recycling equipment according to claim 1, characterized in that: A cover plate is hingedly connected to the surface of the collection box via a hinge, and a pull rod is provided on one side of the cover plate surface.

7. A plastic waste recycling method applied to the multi-mechanism coordinated plastic waste recycling equipment according to any one of claims 1 to 6, characterized in that: The following steps are involved: S1: Material pre-processing and intelligent identification: Scan plastic waste with a hyperspectral imaging sensor, use AI algorithms to identify plastic types and impurities, and generate corresponding crushing parameters and separation strategies based on the identification results; S2: Dynamically adjustable crushing process: The motor speed is adjusted according to the hardness of the material, and the transmission load is monitored in real time through the torque sensor, automatically adjusting the motor torque output and the rotation frequency of the cleaning rod; S3: Multi-stage intelligent separation and classified collection: By controlling the start and stop of the negative pressure fan, the classified collection of products at different stages is achieved, including the cycle of starting the fan to collect fine particles and stopping the fan to discharge coarse particles; S4: Automatic cleaning and system maintenance: The cleaning program is triggered by the inner wall dust sensor, which drives the cleaning rod to rotate and clean the inner wall of the collection cover to ensure the unobstructed separation hole.

8. A plastic waste recycling method according to claim 7, characterized in that: In step S1, the hyperspectral sensor samples the reflection spectrum of the plastic surface, obtains the spectral feature vector in the 400-2500nm band, and processes it through an improved spectrum recognition network based on the convolutional attention mechanism.

9. A plastic waste recycling method according to claim 7, characterized in that: In step S2, the motor is a variable frequency servo motor with a rotation speed range of 500-1500 r / min, which is automatically adjusted according to the hardness of the material by the control system.

10. A plastic waste recycling method according to claim 7, characterized in that: In step S3, the start and stop of the negative pressure fan are divided into two stages: stage 1 is when the fan is started, collecting fine particles smaller than 5 mm, which lasts for 3 minutes; stage 2 is when the fan is stopped, discharging coarse particles larger than 5 mm, which lasts for 2 minutes; the two stages are cyclically operated.

Images