Waste recycling mechanism based on PVC film calender

Abstract

The invention relates to the technical field of PVC film waste recycling, and discloses a waste recycling mechanism based on a PVC film calender, the waste recycling mechanism comprises a box body, a fixing plate is fixedly arranged on one side of the outer wall of the box body, a fan is fixedly arranged on the upper surface of the fixing plate, a rotary connecting assembly is arranged at one end of an air pipe I, and an air pipe II is arranged at the other end of the air pipe II. A first rotating shaft is in threaded connection with one end of the rotating connecting assembly, a plurality of smashing cutters are fixedly arranged on the outer wall of the cutter set, a second air pipe penetrates through the fixing plate to be fixed to the bottom end of the outer wall of the first air pipe, and one end of the second air pipe penetrates through the box to be fixedly arranged at one end of a first receiving hopper. By means of the cutting knife and the tearing angle, PVC film waste can be rapidly and effectively subjected to preliminary tearing treatment, the waste is prevented from being wound in equipment, the draught fan cools the smashing knife through the first air pipe, waste adhesion is prevented, the smashing efficiency is improved, and the equipment failure and maintenance frequency caused by waste adhesion are reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of PVC film waste recycling, and specifically to a waste recycling mechanism based on a PVC film calender. Background Art

[0002] During the production process of PVC films, especially when produced by a calender, a large amount of waste is generated. These wastes need to be effectively recycled and reused. At the same time, in the process of processing these wastes, a key problem needs to be solved, that is, to prevent the phenomenon of winding and film adhesion when the film is crushed.

[0003] In the existing process of processing PVC film production waste, when the film is crushed, due to the characteristics of the film itself, such as its certain flexibility and viscosity, it is easy to wind around the crushing equipment. Once the phenomenon of roll winding occurs, it will not only lead to a reduction in the working efficiency of the crushing equipment, but also increase the equipment maintenance cost and downtime. Moreover, the adhesion of the film to the crushing equipment may also cause uneven crushing, affecting the quality of waste recycling. Summary of the Invention

[0004] Aiming at the deficiencies of the prior art, the present invention provides a waste recycling mechanism based on a PVC film calender, which solves the problems of film winding and film adhesion during crushing.

[0005] To achieve the above object, the present invention is realized through the following technical solutions: A waste recycling mechanism based on a PVC film calender includes a box body. One side of the outer wall of the box body is fixedly provided with a fixed plate, and the upper surface of the fixed plate is fixedly provided with a blower. The output end of the blower is provided with an air duct one. One end of the air duct one is provided with a rotary connection component, and one end of the rotary connection component is threadedly connected with a rotating shaft one. The rotating shaft one is arranged inside the box body. An air inlet groove is arranged at the inner end of the rotating shaft one. One side of the middle part of the rotating shaft one is fixedly provided with a cutter group, and a plurality of crushing knives are fixedly arranged on the outer wall of the cutter group. A plurality of air nozzles are fixedly arranged on the outer wall of the cutter group. The bottom end of the outer wall of the air duct one penetrates through the fixed plate and is fixedly provided with an air duct two. One end of the air duct two penetrates through the box body and is fixedly arranged at one end of a receiving hopper one.

[0006] Preferably, a screw blade is fixedly arranged on the outer wall of the other side of the middle part of the rotating shaft one, a plurality of cutting knives are arranged on the outer wall of the rotating shaft one, and a plurality of tearing angles are fixedly arranged on one side of the screw blade.

[0007] Preferably, a bearing plate one is fixedly arranged on one side of the outer wall of the box body, and a motor one is fixedly arranged on the upper surface of the bearing plate one. The output end of the motor one is fixedly arranged on the other side of the rotating shaft one.

[0008] Preferably, the outer wall of the first rotating shaft is rotatably connected to a housing, the outer wall of the housing is fixedly provided with a feed hopper, one side of the feed hopper is arranged on the side wall of the box body, and the housing penetrates through the box body and is fixedly provided with a sieve mesh.

[0009] Preferably, a second material receiving hopper is arranged on the inner wall of the box body, the bottom end of the second material receiving hopper is provided with a first material receiving hopper, the outer wall of the first material receiving hopper is arranged on the inner wall of the box body, the bottom end of the first material receiving hopper is provided with a second filter plate, the other end of the first material receiving hopper is fixedly provided with a first discharge hopper, and the outer wall of the first discharge hopper is arranged on one side of the box body.

[0010] Preferably, the rotary connection assembly includes a connection head, one end of the connection head is threadedly connected to one end of the first air duct, a rotary joint is arranged on the outer wall of the connection head, a first bearing is arranged on the outer wall of the connection head, a sealing gasket is arranged at the other end of the connection head, a threaded joint is arranged on one side of the sealing gasket, a second bearing is arranged on the outer wall of the threaded joint, one end of the threaded joint is threadedly connected to one end of the first rotating shaft, and a screening structure is arranged at the bottom end of the box body.

[0011] Preferably, the screening structure includes a screening frame, the top end of the screening frame is arranged at the bottom end of the box body, a second bearing plate is fixedly arranged on the outer wall of the screening frame, a second motor is fixedly arranged on the upper surface of the second bearing plate, an output end of the second motor is fixedly provided with a second rotating shaft, the second rotating shaft is rotatably connected to the outer wall of the screening frame, eccentric wheels are fixedly arranged at both ends of the second rotating shaft, a first filter plate is fixedly arranged on the inner wall of the screening frame, a third discharge hopper is arranged at one end of the first filter plate, a guide plate is arranged on the inner wall of the screening frame, a second discharge hopper is arranged at one end of the guide plate, and the outer walls of the third discharge hopper and the second discharge hopper are arranged on the outer wall of the box body.

[0012] Preferably, a plurality of springs are arranged at the bottom end of the screening frame, a buffer pad is arranged at the bottom end of the springs, and a plurality of legs are fixedly arranged on the outer bottom wall of the box body.

[0013] Working principle: PVC film waste enters the shell from the feeding hopper. Motor 1 drives the rotation of shaft 1. The cutting knife on shaft 1 and the tearing angle on one side of the auger blade initially tear the waste, cutting it into smaller pieces. Subsequently, the auger blade pushes the waste to the cutter group. The crushing knives on the cutter group further crush the waste driven by shaft 1. The fan operates, and the air flow is transmitted through air duct 1. Through the rotary connection assembly, which consists of a connector, a rotary joint, bearing 1, a gasket, a threaded joint, and bearing 2, it ensures the stable transmission of the air flow when shaft 1 rotates. The air flow enters the internal air inlet groove of shaft 1 and blows out from the air nozzles, cooling the crushing knives and preventing the waste from sticking. At the same time, it blows the crushed waste towards the sieve. The sieve initially screens the waste. The waste that meets the size requirements falls into receiving hopper 2, then enters receiving hopper 1, and after being filtered again by filter plate 2 at the bottom of receiving hopper 1, it is discharged from discharge hopper 1.

[0014] In the screening structure at the bottom end of the box body, motor 2 drives shaft 2 to drive the eccentric wheel to vibrate the screening frame. The waste that falls from the box body into the screening frame vibrates. The smaller particles pass through filter plate 1 and are discharged from discharge hopper 2 through the guide plate, while the larger particles are discharged from discharge hopper 3. The springs and buffer pads at the bottom end of the screening frame buffer the vibration, reducing the impact on the box body and other components and reducing noise, providing stable support for the legs of the box body, ensuring the overall stable operation of the equipment, thereby realizing the efficient recycling and reuse of PVC film waste, effectively solving problems such as entanglement, adhesion, and incomplete screening during the waste treatment process, and improving the quality and efficiency of waste reuse.

[0015] The present invention provides a waste recycling mechanism based on a PVC film calender. It has the following beneficial effects:

[0016] 1. Through the cutting knife and the tearing angle, the present invention can quickly and effectively conduct preliminary tearing treatment on PVC film waste, avoiding the entanglement of waste in the equipment. The fan cools the crushing knives through air duct 1 and prevents the waste from sticking, which not only improves the crushing efficiency but also reduces equipment failures and maintenance frequencies caused by waste adhesion.

[0017] 2. Through the rotary connection assembly, the present invention enables the air flow generated by the fan to be stably transmitted from air duct 1 to the inside of shaft 1 and blown out through the air nozzles when shaft 1 rotates. The settings of bearing 1 and bearing 2 greatly reduce the frictional resistance between the connector and the threaded joint during relative rotation, extend the service life of the rotary connection assembly, and reduce the equipment maintenance cost and downtime.

[0018] 3. Through motor 2, shaft 2, and the eccentric wheel, the present invention makes the screening frame generate stable and effective vibration. Combined with the screening function of filter plate 1, it can accurately divide the waste into two parts: smaller particles and larger particles, realizing fine screening of the waste, avoiding the residue and blockage of waste in the screening frame, and improving the working efficiency of the entire screening structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a front three-dimensional schematic view of the present invention;

[0020] Figure 2 is a three-dimensional schematic view of a partial structure at the screen of the present invention;

[0021] Figure 3 is a three-dimensional schematic view of a partial structure at the crushing knife of the present invention;

[0022] Figure 4 is a three-dimensional schematic view of a partial structure at the blower of the present invention;

[0023] Figure 5 is a three-dimensional structural schematic view at the rotary joint assembly of the present invention;

[0024] Figure 6 is a three-dimensional schematic view of a partial structure at the screening mechanism of the present invention.

[0025] Among them, 1, box body; 2, blower; 3, fixed plate; 4, air duct one; 5, air duct two; 6, connector; 7, feed hopper; 8, outer shell; 9, motor one; 10, discharge hopper one; 11, support leg; 12, motor two; 13, eccentric wheel; 14, screening frame; 15, filter plate one; 16, discharge hopper two; 17, spring; 18, buffer pad; 19, rotating shaft one; 20, cutting knife; 21, auger blade; 22, screen; 23, rotary joint; 24, receiving hopper one; 25, crushing knife; 26, air nozzle; 27, tearing angle; 28, filter plate two; 29, threaded joint; 30, bearing one; 31, gasket; 32, bearing two; 33, rotating shaft two; 34, discharge hopper three; 35, guide plate; 36, receiving hopper two; 37, bearing plate one; 38, cutter group; 39, bearing plate two. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] The technical solutions of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0027] Embodiment:

[0028] Please refer to the attached Figure 1 - attached Figure 5, an embodiment of the present invention provides a waste recycling mechanism based on a PVC film calender, including a box body 1. On one side of the outer wall of the box body 1, a fixed plate 3 is fixedly arranged. On the upper surface of the fixed plate 3, a fan 2 is fixedly arranged. The output end of the fan 2 is provided with an air duct 1. One end of the air duct 1 is provided with a rotary connection assembly. One end of the rotary connection assembly is threadedly connected to a rotating shaft 19. The rotating shaft 19 is arranged inside the box body 1. An air inlet groove is arranged at one end inside the rotating shaft 19. On one side of the middle of the rotating shaft 19, a cutter group 38 is fixedly arranged. A plurality of crushing knives 25 are fixedly arranged on the outer wall of the cutter group 38. A plurality of air nozzles 26 are fixedly arranged on the outer wall of the cutter group 38. At the bottom end of the outer wall of the air duct 1, an air duct 2 is fixedly arranged through the fixed plate 3. One end of the air duct 2 penetrates the box body 1 and is fixedly arranged at one end of a material receiving hopper 1. On the other side of the middle of the outer wall of the rotating shaft 19, a screw blade 21 is fixedly arranged. A plurality of cutting knives 20 are arranged on the outer wall of the rotating shaft 19. A plurality of tearing angles 27 are fixedly arranged on one side of the screw blade 21. On one side of the outer wall of the box body 1, a bearing plate 1 is fixedly arranged. On the upper surface of the bearing plate 1, a motor 1 is fixedly arranged. The output end of the motor 1 is fixedly arranged on the other side of the rotating shaft 19. The outer wall of the rotating shaft 19 is rotatably connected to a housing 8. An inlet hopper 7 is fixedly arranged on the outer wall of the housing 8. One side of the inlet hopper 7 is arranged on the side wall of the box body 1. The housing 8 penetrates the box body 1 and is fixedly provided with a screen 22. Inside the box body 1, a material receiving hopper 2 is arranged. The bottom end of the material receiving hopper 2 is provided with a material receiving hopper 1. The outer wall of the material receiving hopper 1 is arranged on the inner wall of the box body 1. The bottom end of the material receiving hopper 1 is provided with a filter plate 2. The other end of the material receiving hopper 1 is fixedly provided with a discharge hopper 1. The outer wall of the discharge hopper 1 is arranged on one side of the box body 1.

[0029] Specifically, the PVC film waste enters the housing 8 from the inlet hopper 7. During this process, the cutting knives 20 and tearing angles 27 located on the rotating shaft 19 start to play their roles. The cutting knives 20 and tearing angles 27 work together to perform a preliminary tearing operation on the incoming PVC film waste. The cutting knives 20 cut the waste with their sharp blades, while the tearing angles 27 further tear the waste into smaller pieces using their special shape and structure. This can effectively prevent the waste from getting entangled inside the equipment and ensure the smooth progress of the subsequent processing. At the same time, as the rotating shaft 19 rotates, the screw blade 21 located on the other side of its middle starts to work. The screw blade 21 plays a conveying role and pushes the waste that has been preliminarily torn towards the cutter group 38, ensuring that the waste can enter the next processing link orderly. When the waste is conveyed by the screw blade 21 to the position of the cutter group 38, the crushing knives 25 on the outer wall of the cutter group 38 crush the waste under the drive of the rotating shaft 19.

[0030] The waste is further crushed into smaller particles. During the operation of the crushing knife 25, the airflow generated by the blower 2 is transmitted through the first air duct 4. Since heat is generated when the crushing knife 25 crushes the waste and the PVC film waste itself has a certain viscosity, it is easy for the crushing knife 25 to adhere to the waste. At this time, the airflow transmitted through the first air duct 4 can cool the crushing knife 25 and prevent the waste from adhering to the crushing knife 25. Another part of the airflow generated by the blower 2 enters the first material receiving hopper 24 through the second air duct 5. Under the action of the airflow of the blower 2, the waste crushed by the crushing knife 25 is blown out of the box body 1 from the first discharge hopper 10. The airflow in the second air duct 5 ensures that the crushed waste can be smoothly discharged from the first discharge hopper 10, preventing the waste from remaining or blocking inside the equipment.

[0031] Through the coordinated operation of the cutting knife 20 and the tearing angle 27, the PVC film waste can be quickly and effectively subjected to preliminary tearing treatment, avoiding the waste from winding inside the equipment. The blower 2 cools the crushing knife 25 through the first air duct 4 and prevents the waste from adhering, ensuring that the crushing knife 25 can continuously and efficiently crush the waste. This not only improves the crushing efficiency but also reduces the equipment failures and maintenance frequencies caused by waste adhesion. Through the preliminary tearing operation of the cutting knife 20 and the tearing angle 27, the problem of waste winding is effectively solved, and the blower 2 cools the crushing knife 25 through the first air duct 4 and prevents adhesion.

[0032] Please refer to Appendix Figure 2 Appendix Figure 4 and Appendix Figure 5 As shown in, the rotary connection assembly includes a connection head 6. One end of the connection head 6 is threadedly connected to one end of the first air duct 4. A rotary joint 23 is provided on the outer wall of the connection head 6. A first bearing 30 is provided on the outer wall of the connection head 6. A sealing gasket 31 is provided at the other end of the connection head 6. A threaded joint 29 is provided on one side of the sealing gasket 31. A second bearing 32 is provided on the outer wall of the threaded joint 29. One end of the threaded joint 29 is threadedly connected to one end of the first rotating shaft 19. A screening structure is provided at the bottom end of the box body 1.

[0033] Specifically, when the fan 2 starts to generate air flow, the air flow is transmitted to the connector 6 through the first air duct 4. One end of the connector 6 is tightly connected to the first air duct 4 by threads to ensure that the air flow does not leak. The rotary joint 23 on the outer wall of the connector 6 allows the connector 6 and the fixed external first air duct 4 to maintain good air flow conductivity during relative rotation. The first rotating shaft 19 continuously rotates under the drive of the first motor 9, while the first air duct 4 is stationary. The rotary joint 23 cleverly solves the relative movement problem between the two, ensuring that the air flow can smoothly be transmitted from the fixed first air duct 4 to the rotating connector 6. The first bearing 30 and the second bearing 32 are respectively arranged on the outer walls of the connector 6 and the threaded joint 29. Their function is to support the relative rotational movement of the connector 6 and the threaded joint 29, reduce the frictional resistance, enabling the connector 6 to operate smoothly when following the rotation of the first rotating shaft 19, and at the same time ensuring the connection stability.

[0034] Through the rotary connection assembly, when the first rotating shaft 19 rotates, the air flow generated by the fan 2 can be stably transmitted from the first air duct 4 into the interior of the first rotating shaft 19 and blown out through the air nozzle 26. This stable air flow transmission plays a key role in preventing waste materials from sticking and accumulating in the crushing area, ensuring the smooth progress of the waste material treatment process. The rotary connection assembly, through the reasonable design of components such as the rotary joint 23, the first bearing 30, the second bearing 32, and the gasket 31, successfully solves the problem of stably transmitting the air flow from the fixed first air duct 4 to the interior of the rotating first rotating shaft 19 when the first rotating shaft 19 is in a rotating state, ensuring the normal operation of the equipment.

[0035] Please refer to the attached Figure 1 、attached Figure 6 , the screening structure includes a screening frame 14. The top end of the screening frame 14 is arranged at the bottom end of the box body 1. A second bearing plate 39 is fixedly arranged on the outer wall of the screening frame 14. A second motor 12 is fixedly arranged on the upper surface of the second bearing plate 39. The output end of the second motor 12 is fixedly provided with a second rotating shaft 33. The second rotating shaft 33 is rotatably connected to the outer wall of the screening frame 14. Eccentric wheels 13 are fixedly arranged at both ends of the second rotating shaft 33. A first filter plate 15 is fixedly arranged on the inner wall of the screening frame 14. One end of the first filter plate 15 is provided with a third discharge hopper 34. A guide plate 35 is arranged on the inner wall of the screening frame 14. One end of the guide plate 35 is provided with a second discharge hopper 16. The outer walls of the third discharge hopper 34 and the second discharge hopper 16 are arranged on the outer wall of the box body 1.

[0036] Specifically, when the second motor 12 starts, its output end drives the second rotating shaft 33 to rotate. The eccentric wheels 13 fixed at both ends of the second rotating shaft 33 rotate together with the second rotating shaft 33. Due to the eccentric structure of the eccentric wheels 13, periodic centrifugal forces are generated during the rotation process. This centrifugal force acts on the screening frame 14, causing the screening frame 14 to vibrate. The top end of the screening frame 14 is connected to the bottom end of the box body 1. During the vibration process, the waste materials that have been preliminarily processed and are located inside the box body 1 will fall into the screening frame 14. The waste materials that fall into the screening frame 14 start to be screened under the vibration action of the screening frame 14. The first filter plate 15 fixedly arranged on the inner wall of the screening frame 14 plays a key screening role. During the vibration process of the waste materials, the waste materials with smaller particles can pass through the first filter plate 15, while the waste materials with larger particles are blocked by the first filter plate 15. The smaller particle waste materials that pass through the first filter plate 15 slide down along the guide plate 35 and finally are discharged from the box body 1 through the second discharge hopper 16. The setting of the guide plate 35 ensures that the smaller particle waste materials can be smoothly guided to the second discharge hopper 16, preventing the waste materials from accumulating inside the screening frame 14. The larger particle waste materials blocked by the first filter plate 15 gradually move to the position of the third discharge hopper 34 under the continuous vibration of the screening frame 14 and are discharged from the box body 1 through the third discharge hopper 34.

[0037] Through the vibration system composed of the second motor 12, the second rotating shaft 33 and the eccentric wheels 13, the screening frame 14 generates stable and effective vibrations. Combining with the screening function of the first filter plate 15, the waste materials can be accurately divided into two parts: smaller particles and larger particles, realizing the fine screening of the waste materials, which is beneficial to the subsequent separate treatment or recycling of waste materials with different particle sizes. Through the screening structure, the waste materials can be effectively separated according to the particle size, solving the problem of incomplete screening of the waste materials.

[0038] Please refer to the attached Figure 1 - attached Figure 6 . A number of springs 17 are arranged at the bottom end of the screening frame 14, and a buffer pad 18 is arranged at the bottom end of the springs 17. A number of legs 11 are fixedly arranged on the outer bottom wall of the box body 1.

[0039] Specifically, when the second motor 12 drives the second rotating shaft 33 to drive the eccentric wheels 13 to make the screening frame 14 vibrate, the springs 17 at the bottom end of the screening frame 14 start to play a role. During the vibration process of the screening frame 14, the springs 17 will undergo telescopic deformation according to the up and down movement of the screening frame 14. Since the springs 17 have elastic potential energy, they can absorb and store part of the energy generated by the vibration of the screening frame 14, thereby slowing down the vibration amplitude and speed of the screening frame 14 and achieving a buffering effect. The coordinated action of the springs 17 and the buffer pads 18 effectively reduces the impact of the vibration of the screening frame 14 on the box body 1 and other components, reducing the risk of component loosening, wear or damage caused by excessive vibration, providing a relatively stable internal environment for the screening operation, which is beneficial to improving the screening accuracy and efficiency, and at the same time extending the service life of the equipment.

[0040] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art will understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A waste recycling mechanism based on a PVC film calender, comprising a box (1), characterized in that: A fixing plate (3) is fixedly arranged on one side of the outer wall of the box body (1), a fan (2) is fixedly arranged on the upper surface of the fixing plate (3), an air duct (4) is arranged at the output end of the fan (2), a rotating connection component is arranged at one end of the air duct (4), one end of the rotating connection component is threadedly connected to a rotating shaft (19), the rotating shaft (19) is arranged inside the box body (1), an air inlet groove is arranged at one end of the rotating shaft (19), a knife group (38) is fixedly arranged on one side of the middle part of the rotating shaft (19), a plurality of crushing knives (25) are fixedly arranged on the outer wall of the knife group (38), a plurality of air nozzles (26) are fixedly arranged on the outer wall of the knife group (38), an air duct (5) is fixedly arranged on the bottom end of the outer wall of the air duct (4), which passes through the fixing plate (3), and one end of the air duct (5) passes through the box body (1) and is fixedly arranged at one end of the receiving hopper (24).

2. A waste recycling mechanism based on a PVC film calender according to claim 1, characterized in that: An auger blade (21) is fixedly provided on the outer wall of the other side of the middle of the rotating shaft (19), a plurality of cutting knives (20) are provided on the outer wall of the rotating shaft (19), and a plurality of tearing angles (27) are fixedly provided on one side of the auger blade (21).

3. The waste recycling mechanism based on a PVC film calender according to claim 1, characterized in that: A bearing plate (37) is fixedly arranged on one side of the outer wall of the box body (1), a motor (9) is fixedly arranged on the upper surface of the bearing plate (37), and an output end of the motor (9) is fixedly arranged on the other side of the rotating shaft (19).

4. The waste recycling mechanism based on a PVC film calender according to claim 1, characterized in that: The outer wall of the rotating shaft (19) is rotatably connected to the outer shell (8), the outer wall of the outer shell (8) is fixedly provided with a feed hopper (7), one side of the feed hopper (7) is provided on the side wall of the box body (1), and the outer shell (8) penetrates the box body (1) and is fixedly provided with a screen (22).

5. The waste recycling mechanism based on a PVC film calender according to claim 1, characterized in that: The inner wall of the box body (1) is provided with a receiving hopper 2 (36), the bottom end of the receiving hopper 2 (36) is provided with a receiving hopper 1 (24), the outer wall of the receiving hopper 1 (24) is provided on the inner wall of the box body (1), the bottom end of the receiving hopper 1 (24) is provided with a filter plate 2 (28), and the other end of the receiving hopper 1 (24) is fixedly provided with a discharge hopper 1 (10), and the outer wall of the discharge hopper 1 (10) is provided on one side of the box body (1).

6. The waste recycling mechanism based on a PVC film calender according to claim 1, characterized in that: The rotary connection assembly comprises a connector (6), one end of the connector (6) is threadedly connected to one end of an air duct (4), a rotary joint (23) is arranged on the outer wall of the connector (6), a bearing (30) is arranged on the outer wall of the connector (6), a sealing gasket (31) is arranged on the other end of the connector (6), a threaded joint (29) is arranged on one side of the sealing gasket (31), a bearing (32) is arranged on the outer wall of the threaded joint (29), one end of the threaded joint (29) is threadedly connected to one end of a rotating shaft (19), and a screening structure is arranged at the bottom end of the housing (1).

7. The waste recycling mechanism based on a PVC film calender according to claim 6, characterized in that: The screening structure comprises a screening frame (14), the top end of the screening frame (14) is arranged at the bottom end of the box body (1), the outer wall of the screening frame (14) is fixedly provided with a second bearing plate (39), the upper surface of the second bearing plate (39) is fixedly provided with a second motor (12), the output end of the second motor (12) is fixedly provided with a second rotating shaft (33), the second rotating shaft (33) is rotatably connected to the outer wall of the screening frame (14), and the second rotating shaft (33) is fixedly provided with a second rotating shaft (33) at the output end of the second motor (12). Eccentric wheels (13) are fixedly arranged at both ends of the screening frame (14), a filter plate (15) is fixedly arranged on the inner wall of the screening frame (14), a discharge hopper (34) is arranged at one end of the filter plate (15), a guide plate (35) is arranged on the inner wall of the screening frame (14), a discharge hopper (16) is arranged at one end of the guide plate (35), and the outer walls of the discharge hopper (34) and the discharge hopper (16) are arranged on the outer wall of the box body (1).

8. The waste recycling mechanism based on a PVC film calender according to claim 7, characterized in that: A plurality of springs (17) are arranged at the bottom end of the screening frame (14), a buffer pad (18) is arranged at the bottom end of the spring (17), and a plurality of supporting legs (11) are fixedly arranged on the outer bottom wall of the box body (1).

Images