Plastic regeneration equipment and use method

Abstract

The invention discloses plastic regeneration equipment and a use method, and relates to the technical field of plastic regeneration. A first-stage crushing assembly is installed on the inner side of a material guiding channel in a crushing box, a sealing plate body is installed in the crushing box, a sealing cavity is formed by the sealing plate body and the inner wall of the crushing box, and a water inlet pipeline and a blow-off pipeline which are used for communicating with the sealing cavity are arranged on one side of the sealing plate body; the second-stage crushing mechanism is composed of an outer cover assembly, a centrifugal assembly arranged in the outer cover assembly and a second-stage crushing assembly arranged in the centrifugal assembly, the flow pushing assembly is arranged in the closed cavity in a sliding mode and used for water conveying control of an inner cavity of the centrifugal assembly, and the material guiding channel is used for guiding plastic obtained after first-stage crushing into the centrifugal assembly through the outer cover assembly; the second-stage crushing assembly comprises a material pushing disc arranged in the centrifugal assembly and a plurality of second-stage crushing discs arranged in a linear array. According to the plastic crushing device, the centrifugal cylinder and the second-stage crushing disc are integrated in the same position, so that the plastic crushing effect is improved, and the cleaning effect of crushed plastic is improved.

Description

Technical Field

[0001] This invention belongs to the field of plastic recycling technology, and in particular relates to a plastic recycling device and its usage method. Background Technology

[0002] Waste plastics are a common type of solid waste, containing components needed by other production industries. After recycling, they can be transformed into useful production raw materials, thereby realizing the recycling of resources, reducing the amount of waste disposal, and benefiting social development. In the recycling process, waste plastics often need to be crushed first. After crushing and cleaning, the plastics can be reshaped and recycled.

[0003] In existing technologies, traditional plastic recycling equipment often requires cleaning the surface of the crushed plastic before or after crushing to ensure cleanliness. Traditional cleaning methods mostly use direct spraying to clean the plastic, failing to integrate cleaning and crushing functions simultaneously. This significantly limits the cleaning and crushing effectiveness of the recycled plastic. Therefore, we propose a plastic recycling device and its usage method to solve the aforementioned problems. Summary of the Invention

[0004] The purpose of this invention is to provide a plastic recycling device and a method of use. Through the specific structural design of the crushing box, primary crushing component, outer cover component, centrifugal component, secondary crushing component and flow propulsion component, the invention solves the problem that traditional plastic recycling devices do not achieve the simultaneous integration of cleaning and crushing functions, which greatly limits the cleaning and crushing effects of recycled plastics.

[0005] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution: The present invention is a plastic recycling device, including a crushing box, a material guiding channel inside the crushing box, and a primary crushing component installed inside the material guiding channel; the plastic recycling device also includes a sealed plate body, which is L-shaped and fixedly installed inside the crushing box, forming a sealed chamber with the inner wall of the crushing box, and has a water inlet pipe and a sewage outlet pipe on one side for connecting the sealed chamber; a secondary crushing mechanism, which is installed through the inside of the crushing box, and consists of an outer cover assembly, a centrifugal assembly inside the outer cover assembly, and a secondary crushing component inside the centrifugal assembly; a pusher assembly, which is slidably installed in the sealed chamber, is used for water supply control in the inner cavity of the centrifugal assembly, and the water inlet pipe and sewage outlet pipe are used for water inlet and sewage outlet in the upper cavity of the pusher assembly, respectively; the material guiding channel is used to guide the plastic after primary crushing into the centrifugal assembly through the outer cover assembly, and the secondary crushing component includes a pusher plate and a linear array of secondary crushing plates inside the centrifugal assembly.

[0006] The present invention is further configured such that the propulsion assembly includes a piston plate slidably disposed on the inner wall of the sealed chamber, an arc-shaped propulsion plate fixed on the top of the piston plate, and limit plates fixed on both sides of the top of the arc-shaped propulsion plate. The propulsion structure composed of the arc-shaped propulsion plate and the limit plates is slidably fitted on the inner wall of the sealed chamber.

[0007] The present invention is further configured such that the propulsion assembly includes a servo motor installed on the rear side wall of the crushing box, and a plurality of eccentric pushing parts are provided in a linear array below the piston plate. The eccentric pushing parts slide against the piston plate, and the output end of the servo motor is connected to a power shaft for installing the eccentric pushing parts.

[0008] The invention is further configured such that the crushing box is provided with a concentric installation port and a sealing ring groove on the side opposite to the water inlet pipe, and an annular support groove concentric with the installation port is provided on the inner wall of the crushing box opposite to the installation port. The top of the sealed plate is provided with an arc-shaped bearing port concentric with the installation port, and the diameter of the arc-shaped bearing port, the outer diameter of the annular support groove and the diameter of the installation port are the same.

[0009] The invention is further configured such that the outer cover assembly includes a fixed plate, an outer cover cylinder supported by an arc-shaped bearing port is fixed on one side of the fixed plate, the top of the outer cover cylinder is provided with a feed port communicating with the material guide channel, and the feed port extends along the axial direction of the outer cover cylinder; the bottom of the material guide channel has a curved structure and fits against the outer wall of the outer cover cylinder, the outer cover cylinder passes through the mounting port and is inserted into the annular support groove, a sealing ring connected to the fixed plate is sleeved on the outer cover cylinder, the sealing ring is sealed in the sealing ring groove, and the fixed plate is provided with a concentric discharge port and sealing ring groove on the side opposite to the outer cover cylinder.

[0010] The present invention is further configured such that the centrifugal assembly includes a centrifugal cylinder rotatably fitted inside an outer casing, and both the centrifugal cylinder and the outer casing have a plurality of circumferentially arranged strip-shaped flow ports. The centrifugal cylinder has a feed port arranged along its axial direction on its circumferential side. The inner diameter of the centrifugal cylinder is the same as the diameter of the discharge port. A motor base is installed on the side of the crushing box near the water inlet pipe, and the output shaft of the servo motor installed on the motor base is fixedly connected to the centrifugal cylinder.

[0011] The present invention is further configured such that the secondary crushing component also includes a sealed disc, a sealing ring adapted to the sealing ring groove on the fixed disc is installed on one side of the sealed disc, the pusher disc and the sealed disc are fixedly connected by a support shaft, and the secondary crushing disc is fixedly installed on the support shaft, and an electric push rod connected to the sealed disc is installed on the outside of the crushing box.

[0012] The invention is further configured such that a feeding support plate is detachably installed on the top of the crushing box, a material guide channel is fixedly installed at the bottom of the feeding support plate, a storage box is installed on the side of the crushing box opposite to the water inlet pipe, an inclined water leakage plate is installed inside the storage box, and a support frame for installing an electric actuator is fixed on the outside of the storage box; the water inlet pipe consists of a water inlet pipe communicating with the sealed chamber and a solenoid valve installed on the water inlet pipe, and the sewage pipe consists of a sewage pipe communicating with the sealed chamber and a solenoid valve installed on the sewage pipe.

[0013] The present invention is further configured such that a mounting base plate located above the mounting port is detachably installed on one side of the crushing box, and the primary crushing component includes a set of crushing shafts installed in the material guide channel. The crushing shafts are rotatably disposed between the crushing box and the mounting base plate. A plurality of primary crushing discs are linearly arrayed on the crushing shafts. A servo motor located outside the crushing box is installed at the end of one crushing shaft, and a servo motor located on the mounting base plate is installed at the end of another crushing shaft.

[0014] The present invention has the following beneficial effects: 1. The present invention sets an outer cover assembly that matches the arc-shaped bearing port, sets a rotatable centrifugal assembly inside the outer cover assembly, and sets a secondary crushing assembly inside the centrifugal assembly. The plastic after primary crushing falls into the inner cavity of the centrifugal cylinder along the feed channel, the feed port on the outer cover cylinder, and the feed port on the centrifugal cylinder. During the rotation of the centrifugal cylinder, the cleaning effect can be improved by the turbulence effect of the secondary crushing disc. During the centrifugal dehydration process, the plastic is crushed in two stages by the secondary crushing disc. Through the co-position integration of the centrifugal cylinder and the secondary crushing disc, not only is the crushing effect of the plastic improved, but the cleaning effect of the crushed plastic is also improved.

[0015] 2. This invention uses an eccentric pusher to raise an arc-shaped pusher plate to a designated position. During this process, water is injected into the centrifuge cylinder through the arc-shaped pusher plate, and the centrifuge cylinder is controlled to rotate to clean the plastic inside. Compared with the traditional direct spray nozzle, this effective combination of water-flooding plastic and centrifuge cylinder rotation can drive the plastic to rotate inside the centrifuge cylinder. At the same time, the water flow with turbulence effect can greatly improve the cleaning effect on the plastic. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a longitudinal structural cross-sectional view of the plastic recycling equipment of the present invention.

[0018] Figure 2 for Figure 1 A structural diagram from another angle.

[0019] Figure 3 This is another longitudinal structural cross-sectional view of the plastic recycling equipment in this invention.

[0020] Figure 4 This is a schematic diagram of the crushing box in this invention.

[0021] Figure 5 This is a longitudinal structural cross-sectional view of the crushing box in this invention.

[0022] Figure 6 This is a schematic diagram of the structure of the primary crushing component in this invention.

[0023] Figure 7 This is a schematic diagram of the structure of the secondary crushing component in this invention.

[0024] Figure 8 This is a schematic diagram of the centrifugal assembly in this invention.

[0025] Figure 9 This is a schematic diagram of the outer cover assembly in this invention.

[0026] Figure 10 This is a schematic diagram of the structure of the secondary crushing component in this invention.

[0027] Figure 11 This is a schematic diagram of the propulsion component in this invention.

[0028] Figure 12 This is another longitudinal structural cross-sectional view of the crushing box in this invention.

[0029] The attached diagram lists the components represented by each number as follows: 1- Crushing box, 2- Material guide, 3- Primary crushing component, 4- Sealed plate, 5- Secondary crushing mechanism, 6- Outer cover component, 7- Centrifugal component, 8- Secondary crushing component, 9- Flow propulsion component, 10- Pusher plate, 11- Secondary crushing plate, 12- Piston plate, 13- Arc-shaped flow propulsion plate, 14- Limiting plate, 15- Servo motor, 16- Eccentric pusher, 17- Mounting port, 18- Sealing ring groove, 19- Arc-shaped bearing 20-Fixed plate, 21-Outer cover cylinder, 22-Feed inlet, 23-Sealing ring, 24-Discharge, 25-Centrifuge cylinder, 26-Motor base, 27-Sealed plate, 28-Electric actuator, 29-Feeding support plate, 30-Storage bin, 31-Inclined drainage plate, 32-Support frame, 33-Water inlet pipe, 34-Solenoid valve, 35-Drain pipe, 36-Mounting base plate, 37-First-stage crushing disc, 38-Annular support groove. Detailed Implementation

[0030] 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.

[0031] Example 1, please refer to Figures 1-12 This invention relates to a plastic recycling device, comprising a crushing chamber 1, a material guiding channel 2 inside the crushing chamber 1, a primary crushing component 3 installed inside the material guiding channel 2, and an L-shaped sealed plate 4 inside the crushing chamber 1. The sealed plate 4 forms a sealed chamber with the inner wall of the crushing chamber 1, and one side of the plate 4 is provided with a water inlet pipe and a sewage outlet pipe for connecting the sealed chamber. The water required for plastic cleaning can be transported to the sealed chamber through the water inlet pipe, while the sewage generated from plastic cleaning can be discharged through the sewage outlet pipe. The discharged sewage can be purified by an external filtration device and then pumped back into the cleaning water tank (it should be noted that a cleaning water tank and a filtration water tank are provided on one side of the crushing chamber 1. The water inlet pipe is connected to the pump on the cleaning water tank through an external pipe, and the sewage outlet pipe is connected to the pump on the filtration water tank through another external pipe. This is prior art and therefore is not shown in the figure).

[0032] A secondary crushing mechanism 5 is installed through the inner side of the crushing box 1. It consists of a fixed outer cover assembly 6, a centrifugal assembly 7 located inside the outer cover assembly 6, and a secondary crushing assembly 8 located inside the centrifugal assembly 7 (it should be noted that the secondary crushing assembly 8 does not rotate or move horizontally during the cleaning process). A flow propulsion assembly 9 is slidably installed in the sealed chamber. This flow propulsion assembly 9 is used for water supply control in the inner cavity of the centrifugal assembly 7. The water inlet pipe and the sewage outlet pipe are used for water inlet and sewage outlet in the upper cavity of the flow propulsion assembly 9, respectively. The material guide channel 2 is used to guide the plastic after primary crushing into the centrifugal assembly 7 through the outer cover assembly 6. The secondary crushing assembly 8 includes a pusher plate 10 located inside the centrifugal assembly 7 and several secondary crushing plates 11 in a linear array. By using the primary crushing assembly 3 and the secondary crushing assembly 8 in combination, the crushing effect on the plastic can be effectively improved.

[0033] In this embodiment of the invention, such as Figure 1 and Figure 11As shown, the propulsion assembly 9 includes a piston plate 12 (a conventional structure in the prior art) that is slidably disposed on the inner wall of the sealed chamber. An arc-shaped propulsion plate 13 is fixed to the top of the piston plate 12. Limiting plates 14 are fixed at both sides of the top of the arc-shaped propulsion plate 13. The propulsion structure composed of the arc-shaped propulsion plate 13 and the limiting plates 14 is slidably fitted on the inner wall of the sealed chamber. It should be noted that when the piston plate 12 rises along the sealed chamber to the designated position (i.e., the highest point), the arc-shaped propulsion plate 13 is coaxially disposed with the outer cover assembly 6.

[0034] Furthermore, the propulsion assembly 9 also includes a servo motor 15 installed on the rear side wall of the crushing box 1. Several eccentric pushers 16 are linearly arrayed below the piston plate 12. The eccentric pushers 16 slide against the piston plate 12. The output end of the servo motor 15 is connected to a power shaft for mounting the eccentric pushers 16. It should be noted that the drive structure composed of the power shaft and several eccentric pushers 16 is made of high-strength materials, which can fully meet the lifting and lowering motion requirements of the piston plate 12 when it is under load.

[0035] In this embodiment of the invention, such as Figure 4 As shown, the crushing box 1 has a concentric mounting port 17 and a sealing ring groove 18 on the side opposite to the water inlet pipe. The inner wall of the crushing box 1 opposite to the mounting port 17 has an annular support groove 38 concentric with the mounting port 17. The top of the sealed plate 4 has an arc-shaped bearing port 19 concentric with the mounting port 17. The diameter of the arc-shaped bearing port 19, the outer diameter of the annular support groove 38 and the diameter of the mounting port 17 are the same, so as to ensure that the outer cover assembly 6 is stably installed inside the crushing box 1.

[0036] In this embodiment of the invention, such as Figure 7 and Figure 9 As shown, the outer cover assembly 6 includes a fixing plate 20. An outer cover cylinder 21 supported by an arc-shaped bearing port 19 is fixed on one side of the fixing plate 20. The top of the outer cover cylinder 21 is provided with a feed port 22 that communicates with the material guide channel 2. The feed port 22 extends along the axial direction of the outer cover cylinder 21 (that is, after the outer cover assembly 6 is installed inside the crushing box 1, the feed port 22 at the top of the outer cover cylinder 21 is just connected to the lower port of the material guide channel 2, so as to ensure that the plastic after primary crushing can fall into the feed port 22 along the material guide channel 2).

[0037] The bottom of the guide channel 2 has a curved structure and fits against the outer wall of the outer cover cylinder 21. The outer cover cylinder 21 passes through the installation port 17 and is inserted into the annular support groove 38. A sealing ring 23 connected to the fixed plate 20 is fitted on the outer cover cylinder 21. The sealing ring 23 is sealed in the sealing ring groove 18 (that is, after the outer cover assembly 6 is installed inside the crushing box 1, the outer cover cylinder 21 is supported by the annular support groove 38 and the installation port 17. At this time, the fixed plate 20 fits against the outer wall of the crushing box to seal the installation port 17, and the sealing ring 23 on the fixed plate 20 fits in the sealing ring groove 18 on the periphery of the installation port 17 to improve the sealing performance). The fixed plate 20 has a concentric discharge port 24 and sealing ring groove 18 on the side opposite to the outer cover cylinder 21.

[0038] In this embodiment of the invention, such as Figure 8 As shown, the centrifugal assembly 7 includes a centrifugal cylinder 25 rotatably fitted inside the outer casing 21. Both the centrifugal cylinder 25 and the outer casing 21 have several circumferentially arranged strip-shaped flow ports (it should be noted that plastic particles after primary or secondary crushing cannot pass through the strip-shaped flow ports, but are allowed to flow through). The centrifugal cylinder 25 has a feed inlet 22 arranged along its axial direction on its circumferential side. The inner diameter of the centrifugal cylinder 25 is the same as the diameter of the discharge port 24 (to ensure that the plastic particles after cleaning and secondary crushing can be discharged from the discharge port 24 by means of the horizontal movement of the pusher plate 10 to achieve collection). A motor base 26 is installed on the side of the crushing box 1 near the water inlet pipe. The output shaft of the servo motor 15 installed on the motor base 26 is fixedly connected to the centrifugal cylinder 25.

[0039] In this embodiment of the invention, such as Figure 7 and Figure 10 As shown, the secondary crushing assembly 8 also includes a sealing disc 27. A sealing ring 23 that matches the sealing ring groove 18 on the fixed disc 20 is installed on one side of the sealing disc 27. After the secondary crushing assembly 8 is securely installed inside the centrifuge cylinder 25, the sealing disc 27 fits perfectly against the fixed disc 20. At this time, the sealing ring 23 on the surface of the sealing disc 27 fits perfectly into the sealing ring groove 18 on the fixed disc 20. Thus, the discharge port 24 can be blocked by the sealing disc 27. The pusher disc 10 and the sealing disc 27 are fixedly connected by a support shaft, and the secondary crushing disc 11 is fixedly installed on the support shaft. An electric pusher 28 connected to the sealing disc 27 is installed on the outside of the crushing box 1.

[0040] Example 2, based on Example 1, such as Figure 4As shown, a feeding support plate 29 is detachably installed on the top of the crushing box 1 (the disassembly and assembly method is existing technology and will not be described in detail here). The material guide channel 2 is fixedly installed at the bottom of the feeding support plate 29. A storage box 30 is installed on the side of the crushing box 1 opposite to the water inlet pipe. An inclined drain plate 31 is installed inside the storage box 30. A support frame 32 for installing an electric push rod 28 is fixed on the outside of the storage box 30. Plastic particles pushed into the inclined drain plate 31 by the pusher plate 10 are further dehydrated during the downward rolling process. In this way, the dehydration effect of the washed plastic particles can be greatly improved by centrifugal dehydration and vibration dehydration.

[0041] The water inlet pipe consists of a water inlet pipe 33 connected to the sealed chamber and a solenoid valve 34 installed on the water inlet pipe 33. The sewage discharge pipe consists of a sewage discharge pipe 35 connected to the sealed chamber and a solenoid valve 34 installed on the sewage discharge pipe 35. A control system is installed on the crushing box 1, which realizes the automatic opening and closing control of each servo motor and solenoid valve.

[0042] In this embodiment of the invention, such as Figure 3 and Figure 6 As shown, a mounting base plate 36 is detachably installed on one side of the crushing box 1 above the mounting port 17 (connected by fasteners to facilitate the installation of the primary crushing component 3). The primary crushing component 3 includes a set of crushing shafts installed in the material guide channel 2. The crushing shafts are rotatably positioned between the crushing box 1 and the mounting base plate 36. Several primary crushing discs 37 are linearly arrayed on the crushing shafts. A servo motor 15 located outside the crushing box 1 is installed at the end of one crushing shaft, and a servo motor 15 located on the mounting base plate 36 is installed at the end of another crushing shaft (the entire primary crushing component 3 is a common plastic crushing structure in the prior art, so it will not be described in detail here).

[0043] Example 3: The present invention also includes a method of using a plastic recycling device, specifically comprising the following steps: S1. A certain amount of plastic is placed in the feed channel 2 and crushed by the primary crushing disc 37. (It should be noted that the plastic placed in the feed channel 2 may be plastic that has been pre-crushed on the outside so that the primary crushing component 3 can better complete the crushing work.) The plastic after primary crushing falls into the inner cavity of the centrifuge cylinder 25 along the feed channel 2, the feed inlet 22 on the outer cover cylinder 21, and the feed inlet 22 on the centrifuge cylinder 25. (In the initial state, the feed inlet 22 on the centrifuge cylinder 25 faces upward and is aligned with the feed inlet 22 on the outer cover cylinder 21 to ensure that the plastic after primary crushing can fall into the inner cavity of the centrifuge cylinder 25 along each feed inlet.)

[0044] S2. After the first-stage crushing time set by the control system is reached, the control system controls the opening of the solenoid valve 34 on the water inlet pipe 33 and the pump on the cleaning water tank. A certain amount of cleaning water is delivered to the upper chamber of the arc-shaped push plate 13 through the water inlet pipe 33 (the water delivery volume can be controlled by setting a flow meter on the water inlet pipe 33 or by installing a water level sensor on the top of the sealed plate 4). After the solenoid valve 34 on the water inlet pipe 33 is closed, the eccentric pusher 16 is controlled to rotate 180°. The eccentric pusher 16 pushes the arc-shaped pusher 13 to rise to the designated position (highest point). During this process, water is poured into the inner chamber of the centrifuge cylinder 25 through the arc-shaped pusher 13.

[0045] S3. The control system controls the centrifuge drum 25 to rotate, and cleans the plastic inside the centrifuge drum 25. After cleaning, the eccentric pusher 16 rotates 180° again to gradually release the upward thrust on the piston plate 12. The arc-shaped pusher plate 13 and the piston plate 12 slide down and reset (at the lowest point) along the inner wall of the sealed chamber under their own gravity (while the upper chamber also contains the weight of the sewage). Then, the control system controls the opening of the solenoid valve 34 on the drain pipe 35, and the sewage in the upper chamber of the arc-shaped pusher plate 13 is extracted through the pump on the filter water tank and the drain pipe 35. After the sewage is emptied through the drain pipe, steps S2 to S3 are repeated to complete the cleaning of the plastic again.

[0046] S4. Next, control the centrifuge drum 25 to rotate at high speed to drive the plastic inside to move and achieve centrifugal dehydration. During the centrifugal dehydration process, the secondary crushing disc 11 inside the centrifuge drum 25 completes the secondary crushing process. At the same time, the collision between the plastic and the secondary crushing disc 11 during the centrifugation process can further improve the plastic dehydration effect. After the secondary crushing is completed, the pusher disc 10 is controlled by the electric pusher 28 to slide along the centrifuge drum 25 to the discharge port 24 (at this time, the pusher disc 10 is still supported by the fixed disc 20). The plastic inside the centrifuge drum 25 is pushed into the storage box 30 by the pusher disc 10. After collection, it is dried and hot melt plasticized to achieve plastic recycling.

[0047] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0048] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A plastic recycling device, comprising a crushing box (1), wherein a material guiding channel (2) is provided inside the crushing box (1), and a primary crushing component (3) is installed inside the material guiding channel (2); characterized in that, Also includes: The sealed plate (4) has an L-shaped structure and is fixedly installed inside the crushing box (1), forming a sealed chamber with the inner wall of the crushing box (1). One side is provided with a water inlet pipe and a sewage outlet pipe for connecting the sealed chamber. The secondary crushing mechanism (5) is installed inside the crushing box (1) and consists of an outer cover assembly (6), a centrifugal assembly (7) located inside the outer cover assembly (6), and a secondary crushing assembly (8) located inside the centrifugal assembly (7). The propulsion assembly (9) is slidably disposed in a closed chamber and divided into an upper chamber and a lower chamber. It is used for water supply control in the inner cavity of the centrifugal assembly (7). The water inlet pipe and the sewage outlet pipe are used for water inlet and sewage outlet in the upper chamber of the propulsion assembly (9), respectively. The material guide channel (2) is used to guide the plastic after primary crushing into the centrifugal assembly (7) through the outer cover assembly (6). The secondary crushing assembly (8) includes a pusher plate (10) and a number of secondary crushing plates (11) arranged in a linear array within the centrifugal assembly (7).

2. The plastic recycling equipment according to claim 1, characterized in that, The propulsion assembly (9) includes a piston plate (12) slidably disposed on the inner wall of the sealed chamber. An arc-shaped propulsion plate (13) is fixed on the top of the piston plate (12). Limiting plates (14) are fixed on both sides of the top of the arc-shaped propulsion plate (13). The propulsion structure composed of the arc-shaped propulsion plate (13) and the limiting plates (14) is slidably fitted on the inner wall of the sealed chamber.

3. The plastic recycling equipment according to claim 2, characterized in that, The propulsion assembly (9) also includes a servo motor (15) installed on the rear side wall of the crushing box (1). Several eccentric pushers (16) are arranged in a linear array below the piston plate (12). The eccentric pushers (16) slide against the piston plate (12). The output end of the servo motor (15) is connected to a power shaft for installing the eccentric pushers (16).

4. A plastic recycling device according to claim 3, characterized in that, The crushing box (1) is provided with a concentric installation port (17) and a sealing ring groove (18) on the side opposite to the water inlet pipe. The inner wall of the crushing box (1) opposite to the installation port (17) is provided with an annular support groove (38) concentric with the installation port (17). The top of the sealed plate (4) is provided with an arc-shaped bearing port (19) concentric with the installation port (17). The diameter of the arc-shaped bearing port (19), the outer diameter of the annular support groove (38) and the diameter of the installation port (17) are the same.

5. A plastic recycling device according to claim 4, characterized in that, The outer cover assembly (6) includes a fixed plate (20), and an outer cover cylinder (21) supported by an arc-shaped bearing port (19) is fixed on one side of the fixed plate (20). The top of the outer cover cylinder (21) is provided with a feed port (22) that communicates with the material guide channel (2). The feed port (22) extends along the axial direction of the outer cover cylinder (21). The bottom of the material guide channel (2) is curved and fits against the outer wall of the outer cover (21). The outer cover (21) passes through the installation port (17) and is inserted into the annular support groove (38). A sealing ring (23) connected to the fixed plate (20) is fitted on the outer cover (21). The sealing ring (23) is sealed in the sealing ring groove (18). The fixed plate (20) has a concentric discharge port (24) and sealing ring groove (18) on the side opposite to the outer cover (21).

6. A plastic recycling device according to claim 5, characterized in that, The centrifugal assembly (7) includes a centrifugal cylinder (25) rotatably fitted inside an outer casing (21). Both the centrifugal cylinder (25) and the outer casing (21) have several circumferentially arranged strip-shaped flow ports. The centrifugal cylinder (25) has a feed inlet (22) arranged along its axial direction on its circumferential side. The inner diameter of the centrifugal cylinder (25) is the same as the diameter of the discharge port (24). The crushing box (1) is equipped with a motor base (26) on the side near the water inlet pipe. The output shaft of the servo motor (15) installed on the motor base (26) is fixedly connected to the centrifugal cylinder (25). Both the centrifuge cylinder (25) and the outer casing cylinder (21) are provided with several strip-shaped flow ports. The width of the strip-shaped flow ports on the centrifuge cylinder (25) is smaller than the minimum particle size of the plastic particles after being crushed by the secondary crushing component (8).

7. A plastic recycling device according to claim 6, characterized in that, The secondary crushing assembly (8) also includes a sealed plate (27). A sealing ring (23) is installed on one side of the sealed plate (27) and is adapted to the sealing ring groove (18) on the fixed plate (20). The pusher plate (10) and the sealed plate (27) are fixedly connected by a support shaft, and the secondary crushing plate (11) is fixedly installed on the support shaft. An electric push rod (28) connected to the sealed plate (27) is installed on the outside of the crushing box (1).

8. A plastic recycling device according to claim 7, characterized in that, The crushing box (1) is detachably equipped with a feeding support plate (29) on the top, and the material guide channel (2) is fixedly installed at the bottom of the feeding support plate (29). The crushing box (1) is equipped with a storage box (30) on the side opposite to the water inlet pipe. An inclined water leakage plate (31) is installed inside the storage box (30), and a support frame (32) for installing an electric push rod (28) is fixed on the outside of the storage box (30). The water inlet pipe consists of a water inlet pipe (33) connected to the sealed chamber and a solenoid valve (34) installed on the water inlet pipe (33). The sewage outlet pipe consists of a sewage outlet pipe (35) connected to the sealed chamber and a solenoid valve (34) installed on the sewage outlet pipe (35).

9. A plastic recycling device according to claim 8, characterized in that, The crushing box (1) is detachably mounted on one side with a mounting base plate (36) above the mounting port (17). The primary crushing component (3) includes a set of crushing shafts installed in the material guide channel (2). The crushing shafts are rotatably positioned between the crushing box (1) and the mounting base plate (36). Several primary crushing discs (37) are linearly arrayed on the crushing shafts. A servo motor (15) located outside the crushing box (1) is installed at the end of one crushing shaft, and a servo motor (15) located on the mounting base plate (36) is installed at the end of the other crushing shaft.

10. The method of using the plastic recycling equipment as described in claim 9, characterized in that, Includes the following steps: S1. A certain amount of plastic is placed in the material guide channel (2) and crushed by the first-stage crushing disc (37). The plastic after the first-stage crushing falls into the inner cavity of the centrifuge (25) along the material guide channel (2), the feed port (22) on the outer cover cylinder (21), and the feed port (22) on the centrifuge cylinder (25). S2. A certain amount of water is transported to the upper chamber of the arc-shaped pusher plate (13) through the water inlet pipe. The arc-shaped pusher plate (13) is pushed up to the designated position by the eccentric pusher (16). The water is poured into the inner chamber of the centrifuge cylinder (25) through the arc-shaped pusher plate (13). S3. The plastic inside is cleaned by rotating the centrifuge tube (25). After cleaning, the arc-shaped pusher plate (13) is lowered and reset by the eccentric pusher (16). After the sewage is discharged through the sewage pipe, the steps S2 to S3 are repeated to clean the plastic again. S4. Control the centrifuge tube (25) to rotate at high speed to drive the plastic inside to move. The secondary crushing process is completed by the secondary crushing disc (11) inside the centrifuge tube (25). After the secondary crushing is completed, the plastic is pushed into the storage box (30) by the pusher disc (10). After collection, it is dried and hot melt plasticized to realize plastic recycling.

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