Co-extrusion film waste recovery system

By designing a coextruded film waste recycling system with synchronous rotation of the crushing blade, the problem of coextruded film waste wrapping the crushing blade is solved, and a more efficient crushing process is achieved.

CN119567464AInactive Publication Date: 2025-03-07ANHUI CHUHENG NEW MATERIAL TECH CO LTD
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Patent Information

Application Number
CN202411689253.4
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-11-25
Publication Date
2025-03-07
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

When the existing coextrusion film crushing equipment deals with coextrusion film waste, due to the tensile properties of the waste, it is easy to wrap the crushing blade, resulting in equipment damage and reduced working efficiency.

Method used

A co-extruded film waste recycling system is designed, and the two crushing rollers are driven to rotate relative to each other through external driving equipment, and the first servo motor is started to drive the rotating rod and the crushing blade to rotate simultaneously, so as to achieve preliminary and secondary crushing of the waste and avoid scrap wrapping.

Benefits of technology

The problem of co-extruded film waste wrapping and crushing blades is effectively avoided, and the thoroughness and working efficiency of scrap crushing are improved.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention relates to the technical field of co-extrusion film recycling, in particular to a co-extrusion film waste recycling system which comprises a body, a cleaning pool and a draining pool, smashing rollers are symmetrically and rotationally arranged in the body, a feeding opening communicated with the interior of the body is formed in the upper end of the body, and a collecting hopper located below the smashing rollers is fixedly arranged on the inner wall of the body; a first filter plate is fixedly arranged on the inner wall in the collecting hopper, a plurality of first filter holes are formed in the first filter plate, and a first servo motor is fixedly arranged at the lower end of the first filter plate. According to the co-extrusion film waste crushing device, two crushing rollers are driven by external driving equipment to rotate relatively, co-extrusion film waste is fed into the body through a feeding opening, the two crushing rollers crush the large co-extrusion film waste into fine waste preliminarily, and meanwhile, a first servo motor is started to further drive a rotating rod and crushing blades to rotate synchronously; the smashing blades conduct secondary smashing on fine waste materials, the fine waste materials cannot wind the blades, meanwhile, the fine waste materials can be smashed more thoroughly, and the working efficiency is improved.
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Description

Technical Field

[0001] The invention relates to a recycling system, in particular to a co-extruded film waste recycling system, and belongs to the technical field of co-extruded film recycling. Background Art

[0002] Co-extruded film is used in pure milk bags, express bags, and metal protective films. It is characterized by good tensile properties and good surface brightness. Co-extruded film has most of the characteristics of composite film, but there is one difference, that is, all layers of co-extruded film are extruded at the same time, so there will be no other non-plastic materials such as aluminum foil and paper. The combination of its product materials is relatively small and the scope of application is also small. However, since the winterization layers are combined by hot melt without adhesive, the hygienic safety of co-extruded film for food packaging is relatively reliable;

[0003] Co-extruded film is a recyclable resource, but after being used in milk bags, express bags, and metal protective films, it is usually incinerated or buried as garbage, resulting in a waste of resources. As the country increases its efforts in environmental protection, more companies are beginning to recycle recyclable energy, including co-extruded film waste. Co-extruded film waste needs to be crushed after recycling. The existing co-extruded film crushing equipment crushes it with a crushing blade, but because the co-extruded film has certain tensile properties, a large amount of input waste may be entangled with the crushing blade, causing certain damage to the crushing blade. Therefore, the delivery speed needs to be reduced when the waste is delivered, but it will also reduce work efficiency.

[0004] Therefore, there is an urgent need to improve the co-extrusion film waste recycling system to solve the above-mentioned problems. Summary of the invention

[0005] The purpose of the present invention is to provide a co-extruded film waste recycling system, which drives two crushing rollers to rotate relative to each other through an external driving device, and feeds the co-extruded film waste into a main body through a feed port. The two crushing rollers first crush the large co-extruded film waste into fine waste, and at the same time start the first servo motor to further drive the rotating rod and the crushing blade to rotate synchronously. The crushing blade performs secondary crushing on the fine waste, and the fine waste will not be entangled with the blade. At the same time, the fine waste can be crushed more thoroughly, thereby improving work efficiency.

[0006] In order to achieve the above object, the main technical solutions adopted by the present invention include:

[0007] A co-extruded film waste recovery system comprises a body, a cleaning tank and a filter drying tank, wherein a crushing roller is symmetrically rotated inside the body, a feed port connected to the inside of the body is arranged at the upper end of the body, a collecting hopper located below the crushing roller is fixedly arranged on the inner wall of the body, a first filter plate is fixedly arranged on the inner inner wall of the collecting hopper, a plurality of first filter holes are opened on the first filter plate, a first servo motor is fixedly arranged at the lower end of the first filter plate, a rotating shaft penetrating the first filter plate is connected to the output end of the first servo motor, a plurality of stirring rods are fixedly arranged on the outer surface of the other end of the rotating shaft, a plurality of crushing blades are fixedly arranged on the plurality of stirring rods, a fixed plate is fixedly arranged on the rotating shaft below the stirring rod, a brush is fixedly arranged at the lower end of the fixed plate, and the brush is located above the first filter plate, a connected storage bin is arranged at the lower end of the collecting hopper, the bottom end of the storage bin is fixedly connected to the lower end of the body, the cleaning tank is located on one side of the body and a cleaning mechanism for washing the crushed co-extruded film waste with water is arranged in the cleaning tank.

[0008] Preferably, the cleaning mechanism includes a second servo motor arranged at the lower end of the cleaning tank, a rotating rod connected to the output end of the second servo motor and extending to the inside of the cleaning tank, and two groups of stirring plates fixedly arranged on the outer surface of the rotating rod, a second filter plate is fixedly arranged on the inner wall of the cleaning tank, a plurality of second filter holes are opened on the second filter plate, one end of the rotating rod away from the second servo motor passes through the second filter plate and is rotatably connected to the second filter plate, and the stirring plate is located above the second filter plate.

[0009] Preferably, a pumping machine is fixedly provided at the lower end of the main body, the input end of the pumping machine is connected to a feed pipe, the other end of the feed pipe is connected to the interior of the storage bin, and the output end of the pumping machine is connected to a discharge pipe, the other end of the discharge pipe is connected to the cleaning tank.

[0010] Preferably, a U-shaped support frame with an upward notch is fixedly provided at the lower end of the cleaning tank, the lower end of the second servo motor is fixedly provided on the U-shaped support frame, a sealing gasket is provided on the rotating rod, and the sealing gasket is fixedly connected to the bottom of the cleaning tank.

[0011] Preferably, the cleaning pool is provided with a water inlet pipe and a sewage pipe which are connected with the interior of the cleaning pool, and the water inlet pipe and the sewage pipe are both provided with a first control valve.

[0012] Preferably, a third filter plate is fixedly installed inside the filter tank, a plurality of third filter holes are opened on the third filter plate, a water outlet pipe connected to the interior of the filter tank is arranged at the lower end of one side of the filter tank, a second control valve is arranged on the water outlet pipe, and the filter tank is located outside one side of the cleaning tank.

[0013] Preferably, a discharge pipe connected to the interior of the cleaning tank is provided on one side of the cleaning tank, the other end of the discharge pipe is connected to the interior of the filter tank, a butterfly valve is provided on the discharge pipe, and the discharge pipe is located above the second filter plate.

[0014] Preferably, a switch door is hingedly provided on one side of the body, and a transparent observation window is provided on the switch door.

[0015] Preferably, a lower hopper is fixedly provided inside the main body, the lower end opening of the lower hopper is located above the two crushing rollers, a protective cover is provided at the lower end of the first filter plate, and the first servo motor is located in the protective cover.

[0016] Preferably, the number of the plurality of stirring rods is four, and the four stirring rods are equidistantly arranged around the central axis of the rotating shaft, and the number of the stirring plates in a single group is four, and the four stirring plates are equidistantly arranged around the central axis of the rotating rod.

[0017] The present invention has at least the following beneficial effects:

[0018] 1. Drive the two crushing rollers to rotate relative to each other through an external driving device, and put the co-extruded film waste into the body through the feed port. The two crushing rollers first crush the large co-extruded film waste into small waste. At the same time, start the first servo motor to further drive the rotating rod and the crushing blade to rotate synchronously. The crushing blade crushes the small waste for the second time. The small waste will not be entangled with the blade. At the same time, the small waste can be crushed more thoroughly, thereby improving work efficiency.

[0019] 2. Start the second servo motor, which can drive the two sets of stirring plates to rotate through the rotating rod, so as to fully stir the water mixed with waste in the cleaning tank, so as to separate the dust, impurities and waste on the waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0021] Figure 1 It is an isometric structural cross-sectional view of the present invention;

[0022] Figure 2 For the present invention Figure 1 Enlarged view of point A in the middle;

[0023] Figure 3 It is an isometric structural schematic diagram of the present invention.

[0024] In the figure, 1, body; 11, cleaning tank; 12, filter tank; 13, crushing roller; 14, feed inlet; 15, collecting hopper; 16, first filter plate; 17, first filter hole; 18, first servo motor; 19, rotating shaft; 120, stirring rod; 121, crushing blade; 122, fixing plate; 123, brush; 124, storage bin; 2, second servo motor; 21, rotating rod; 22, stirring plate; 23, The second filter plate; 24, the second filter hole; 3, the pump; 31, the feed pipe; 32, the discharge pipe; 4, the U-shaped support; 41, the sealing gasket; 5, the water inlet pipe; 51, the sewage pipe; 52, the first control valve; 6, the third filter plate; 61, the third filter hole; 62, the water outlet pipe; 63, the second control valve; 7, the discharge pipe; 71, the butterfly valve; 8, the switch door; 81, the transparent observation window; 9, the lower hopper; 91, the protective cover. DETAILED DESCRIPTION

[0025] The following will describe the implementation methods of the present application in detail with the help of accompanying drawings and examples, so that the implementation process of how the present application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0026] like Figure 1-Figure 3As shown, the co-extruded film waste recycling system provided in this embodiment includes a main body 1, a cleaning tank 11 and a filter tank 12. A crushing roller 13 is symmetrically arranged inside the main body 1 for rotation. The two crushing rollers 13 are connected to an external driving device and rotate in opposite directions. The two crushing rollers 13 preliminarily crush the co-extruded film waste to decompose it into small fragments. A feed port 14 connected to the inside of the main body 1 is arranged at the upper end of the main body 1. The feed port 14 is convenient for feeding the co-extruded film waste. A collecting hopper 15 located below the crushing rollers 13 is fixedly arranged on the inner wall of the main body 1. The collecting hopper 15 can facilitate the rapid collection of the crushed waste. To aggregate, it is convenient for secondary crushing and improves efficiency. A first filter plate 16 is fixedly arranged on the inner wall of the collecting hopper 15. A plurality of first filter holes 17 are opened on the first filter plate 16. A first servo motor 18 is fixedly arranged at the lower end of the first filter plate 16. The output end of the first servo motor 18 is connected with a rotating shaft 19 that penetrates the first filter plate 16. A plurality of stirring rods 120 are fixedly arranged on the outer surface of the other end of the rotating shaft 19. A plurality of crushing blades 121 are fixedly arranged on the plurality of stirring rods 120. The number of the plurality of stirring rods 120 is four, and the four stirring rods 120 surround the center of the rotating shaft 19. The equidistant arrangement of the axes enables the stirring rod 120 to crush the waste more thoroughly when rotating. A fixed plate 122 is fixedly arranged below the stirring rod 120 on the rotating shaft 19. A brush 123 is fixedly arranged at the lower end of the fixed plate 122. The brush 123 is located above the first filter plate 16. A connected storage bin 124 is arranged at the lower end of the collecting hopper 15. The bottom end of the storage bin 124 is fixedly connected to the lower end of the body 1. The first servo motor 18 is started. The first servo motor 18 drives the multiple stirring rods 120 and the upper crushing blade 121 of the stirring rod 120 to rotate synchronously through the rotating shaft 19, thereby improving the first servo motor 18. The rotation speed of the motor 18 causes the crushing blade 121 to further crush the waste material crushed by the crushing roller 13. The waste material after the secondary crushing falls into the storage bin 124 through the first filter hole 17. Some waste material falls onto the first filter plate 16. The rotating shaft 19 drives the crushing blade 121 to rotate while also driving the fixed plate 122 and the brush 123 to rotate synchronously, thereby cleaning the waste material on the first filter plate 16 and discharging the waste material through the first filter hole 17. The cleaning tank 11 is located at one side of the body 1 and a cleaning mechanism for washing the crushed co-extruded film waste material with water is provided in the cleaning tank 11.

[0027] Among them, Figure 1As shown, the cleaning mechanism includes a second servo motor 2 arranged at the lower end of the cleaning tank 11, a rotating rod 21 connected to the output end of the second servo motor 2 and extending to the inside of the cleaning tank 11, and two groups of stirring plates 22 fixedly arranged on the outer surface of the rotating rod 21. The number of a single group of stirring plates 22 is four, and the four stirring plates 22 are equidistantly arranged around the central axis of the rotating rod 21. A second filter plate 23 is fixedly arranged on the inner wall of the cleaning tank 11, and a plurality of second filter holes 24 are opened on the second filter plate 23. One end of the rotating rod 21 away from the second servo motor 2 passes through the second filter plate 23 and is rotatably connected to the second filter plate 23. The stirring plate 22 is located above the second filter plate 23. The second servo motor 2 is started, and the second servo motor 2 can drive the two groups of stirring plates 22 to rotate through the rotating rod 21, so as to fully stir the waste mixed with the water flow in the cleaning tank 11, so as to separate the dust, impurities and waste on the waste.

[0028] Further, such as Figure 1 As shown, a pumping machine 3 is fixedly arranged at the lower end of the body 1, the input end of the pumping machine 3 is connected to a feed pipe 31, the other end of the feed pipe 31 is connected to the inside of the storage bin 124, the output end of the pumping machine 3 is connected to a discharge pipe 32, the other end of the discharge pipe 32 is connected to the cleaning tank 11, by starting the pumping machine 3, the crushed waste in the storage bin 124 enters the cleaning tank 11 through the feed pipe 31 and the discharge pipe 32, so as to facilitate the cleaning of the crushed waste;

[0029] Furthermore, Figure 1 and Figure 2 As shown, a switch door 8 is hingedly provided on one side of the body 1, and a transparent observation window 81 is provided on the switch door 8. By providing the switch door 8, it is convenient to inspect and repair the components inside the inner body. By providing the transparent observation window 81, the inside of the equipment can be observed when the equipment is running without opening the switch door 8. A lower hopper 9 is fixedly provided inside the body 1, and the lower end opening of the lower hopper 9 is located above the two crushing rollers 13. A protective cover 91 is provided at the lower end of the first filter plate 16, and the first servo motor 18 is located in the protective cover 91. By providing the lower hopper 9, waste can be quickly dropped to the top of the crushing roller 13 for crushing. By providing the protective cover 91, the first servo motor 18 can be protected to prevent the crushed waste from entering the first servo motor 18 and causing damage to the first servo motor 18;

[0030] like Figure 1 As shown, a U-shaped support frame 4 with a notch facing upward is fixedly provided at the lower end of the cleaning pool 11, the lower end of the second servo motor 2 is fixedly provided on the U-shaped support frame 4, a sealing gasket 41 is provided on the rotating rod 21, and the sealing gasket 41 is fixedly connected to the bottom of the cleaning pool 11, and the sealing gasket 41 can prevent the water in the cleaning pool 11 from flowing out through the gap;

[0031] Further, such as Figure 1 As shown, the cleaning pool 11 is provided with a water inlet pipe 5 and a sewage pipe 51 connected to the inside of the cleaning pool 11, and the water inlet pipe 5 and the sewage pipe 51 are both provided with a first control valve 52. The water inlet pipe 5 is connected to an external water pipe, and the sewage pipe 51 is connected to an external sewage discharge channel. By opening the first control valve 52 on the water inlet pipe 5, water can be injected into the cleaning pool 11, and by opening the first control valve 52 on the sewage pipe 51, sewage at the bottom of the cleaning pool 11 can be discharged;

[0032] Furthermore, Figure 1 As shown, a discharge pipe 7 connected to the inside of the cleaning tank 11 is provided on one side of the cleaning tank 11, and the other end of the discharge pipe 7 is connected to the inside of the filter tank 12. A butterfly valve 71 is provided on the discharge pipe 7. The discharge pipe 7 is located above the second filter plate 23. By providing the discharge pipe 7 and opening the butterfly valve 71, the waste cleaned in the cleaning tank 11 enters the filter tank 12 through the discharge pipe 7.

[0033] like Figure 1 As shown, a third filter plate 6 is fixedly arranged inside the filter tank 12, and a plurality of third filter holes 61 are opened on the third filter plate 6. A water outlet pipe 62 connected to the inside of the filter tank 12 is arranged at the lower end of one side of the filter tank 12, and a second control valve 63 is arranged on the water outlet pipe 62. The filter tank 12 is located outside one side of the cleaning tank 11. By arranging the third filter plate 6 and the third filter holes 61, the cleaned waste and water flow enter the filter tank 12 and fall onto the third filter plate 6. The water flow falls to the bottom of the filter tank 12 through the third filter holes 61 and is discharged by opening the second control valve 63.

[0034] like Figure 1-Figure 3 As shown, the principle of the co-extruded film waste recycling system provided in this embodiment is as follows: the two crushing rollers 13 are driven to rotate relative to each other by an external driving device, and the first servo motor 18 is started to further drive the rotating rod 21 and the crushing blade 121 to rotate synchronously, and the co-extruded film waste is put into the body 1 through the feed inlet 14, and the co-extruded film waste is initially crushed by the two crushing rollers 13, falls into the collecting hopper 15, and is crushed again by the crushing blade 121. The waste after the second crushing falls into the storage bin 124 through the first filtering hole 17, and the storage bin 124 is activated by the extractor 3. The waste in the silo 124 is transported to the cleaning tank 11, and a proper amount of water is injected into the cleaning tank 11 by opening the first control valve 52 on the water inlet pipe 5, and the second servo motor 2 is started. The second servo motor 2 drives the two sets of stirring plates 22 to rotate through the rotating rod 21, so as to fully stir and clean the waste. The butterfly valve 71 is opened, and the waste and water in the cleaning tank 11 enter the third filter plate 6 in the filter tank 12 through the discharge pipe 7, and the water is discharged through the third filter hole 61. The waste falls on the third filter plate 6, and the water is controlled and collected after a certain period of time.

[0035] For example, certain words are used in the specification and claims to refer to specific components. Those skilled in the art should understand that hardware manufacturers may use different terms to refer to the same component. This specification and claims do not use differences in names as a way to distinguish components, but use differences in the functions of components as the criteria for distinction. For example, "including" mentioned throughout the specification and claims is an open term, so it should be interpreted as "including but not limited to". "Approximately" means that within an acceptable error range, those skilled in the art can solve technical problems within a certain error range and basically achieve technical effects.

[0036] It should be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a product or system including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such product or system. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the product or system including the elements.

[0037] The above description shows and describes several preferred embodiments of the present invention, but as mentioned above, it should be understood that the present invention is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the invention concept described herein through the above teachings or the technology or knowledge of the relevant field. Changes and variations made by those skilled in the art do not depart from the spirit and scope of the present invention, and should be within the scope of protection of the claims attached to the present invention.

Claims

1. A co-extruded film waste recycling system, comprising a main body (1), a cleaning tank (11) and a filter tank (12), characterized in that: A crushing roller (13) is symmetrically arranged inside the body (1), and a feeding port (14) connected to the inside of the body (1) is arranged at the upper end of the body (1). A collecting hopper (15) located below the crushing roller (13) is fixedly arranged on the inner wall of the body (1), and a first filter plate (16) is fixedly arranged on the inner wall of the collecting hopper (15). A plurality of first filter holes (17) are provided on the first filter plate (16). A first servo motor (18) is fixedly arranged at the lower end of the first filter plate (16), and a rotating shaft (19) passing through the first filter plate (16) is connected to the output end of the first servo motor (18), and a rotating shaft (19) is fixedly arranged on the outer surface of the other end of the rotating shaft (19). There are a plurality of stirring rods (120), each of which is fixedly provided with a plurality of crushing blades (121); a fixed plate (122) is fixedly provided on the rotating shaft (19) below the stirring rod (120); a brush (123) is fixedly provided at the lower end of the fixed plate (122); the brush (123) is located above the first filter plate (16); a connected storage bin (124) is provided at the lower end of the collecting hopper (15); the bottom end of the storage bin (124) is fixedly connected to the lower end of the main body (1); the cleaning tank (11) is located on one side of the main body (1) and a cleaning mechanism for washing the crushed co-extruded film waste with water is provided in the cleaning tank (11).

2. A co-extrusion film waste recycling system according to claim 1, characterized in that: The cleaning mechanism comprises a second servo motor (2) arranged at the lower end of the cleaning tank (11), a rotating rod (21) connected to the output end of the second servo motor (2) and extending into the interior of the cleaning tank (11), and two groups of stirring plates (22) fixedly arranged on the outer surface of the rotating rod (21); a second filter plate (23) is fixedly arranged on the inner wall of the cleaning tank (11); a plurality of second filter holes (24) are formed on the second filter plate (23); an end of the rotating rod (21) away from the second servo motor (2) passes through the second filter plate (23) and is rotatably connected to the second filter plate (23); and the stirring plate (22) is located above the second filter plate (23).

3. The co-extrusion film waste recycling system according to claim 1, characterized in that: A pumping machine (3) is fixedly arranged at the lower end of the body (1), the input end of the pumping machine (3) is connected to a feed pipe (31), the other end of the feed pipe (31) is connected to the interior of the storage bin (124), and the output end of the pumping machine (3) is connected to a discharge pipe (32), the other end of the discharge pipe (32) is connected to the cleaning tank (11).

4. A co-extrusion film waste recycling system according to claim 2, characterized in that: A U-shaped support frame (4) with a notch facing upward is fixedly arranged at the lower end of the cleaning tank (11); the lower end of the second servo motor (2) is fixedly arranged on the U-shaped support frame (4); a sealing gasket (41) is arranged on the rotating rod (21); and the sealing gasket (41) is fixedly connected to the bottom of the cleaning tank (11).

5. The co-extrusion film waste recycling system according to claim 1, characterized in that: The cleaning pool (11) is provided with a water inlet pipe (5) and a sewage discharge pipe (51) which are in communication with the interior of the cleaning pool (11), and the water inlet pipe (5) and the sewage discharge pipe (51) are both provided with a first control valve (52).

6. A co-extrusion film waste recycling system according to claim 1, characterized in that: A third filter plate (6) is fixedly arranged inside the filter tank (12), and a plurality of third filter holes (61) are provided on the third filter plate (6). A water outlet pipe (62) connected to the interior of the filter tank (12) is arranged at the lower end of one side of the filter tank (12), and a second control valve (63) is arranged on the water outlet pipe (62). The filter tank (12) is located outside one side of the cleaning tank (11).

7. A co-extrusion film waste recycling system according to claim 2, characterized in that: A discharge pipe (7) connected to the interior of the cleaning tank (11) is provided on one side of the cleaning tank (11); the other end of the discharge pipe (7) is connected to the interior of the filter tank (12); a butterfly valve (71) is provided on the discharge pipe (7); and the discharge pipe (7) is located above the second filter plate (23).

8. The co-extrusion film waste recycling system according to claim 1, characterized in that: A switch door (8) is hingedly provided on one side of the main body (1), and a transparent observation window (81) is provided on the switch door (8).

9. A co-extrusion film waste recycling system according to claim 1, characterized in that: A lower hopper (9) is fixedly arranged inside the main body (1), and the lower end opening of the lower hopper (9) is located above the two crushing rollers (13). A protective cover (91) is arranged at the lower end of the first filter plate (16), and the first servo motor (18) is located inside the protective cover (91).

10. A co-extrusion film waste recycling system according to claim 2, characterized in that: The number of the plurality of stirring rods (120) is four, and the four stirring rods (120) are equidistantly arranged around the central axis of the rotating shaft (19); the number of the single group of stirring plates (22) is four, and the four stirring plates (22) are equidistantly arranged around the central axis of the rotating rod (21).