Plastic film recovery processing equipment

Abstract

The invention relates to the field of waste plastic recycling, and discloses plastic film recycling equipment which is used for cleaning and recycling broken plastic films. Comprising a cleaning pool, an inclined conveying belt is arranged at the tail end of the cleaning pool, water filtering holes are formed in the conveying belt, and an extrusion component is arranged on the conveying belt; and the fished-out fragments are extruded by the extrusion part, so that the drainage speed of the fragments is accelerated, and the subsequent recovery processing step is ensured to be smoothly carried out. A traditional conveying belt drains water only by means of gravity, and water in wet plastic fragments and between layers is difficult to effectively discharge, so that the water yield is large. The intermittent extrusion action is introduced in the operation cycle of the conveying belt, and the'wet cake 'structure formed by the surface tension of a water film of the wet material is destroyed in the squeezing process, so that the moisture is easier to release, the initial moisture content of the material is greatly reduced, the load of subsequent centrifugal dewatering or hot air drying equipment is effectively reduced, and the energy consumption and the operation cost are remarkably reduced.

Description

Technical Field

[0001] This invention belongs to the field of waste plastic recycling, and specifically relates to a plastic film recycling and processing equipment. Background Technology

[0002] Traditional waste plastic film is mostly disposed of through landfill or incineration, which easily causes environmental pollution. With increasing environmental protection requirements, plastic recycling equipment is becoming more widespread. For example, a plastic granulator using recycled plastic, with application number CN202420652422.6, washes the plastic through a washing tank and a mixing assembly, and uses a conveyor belt with drainage holes to lift the wet material for initial dewatering. However, significant problems still exist in actual operation:

[0003] First, the commonly used wet material extraction methods, such as bucket scoops, conveyor belts, or screw conveyors, suffer from a significant problem of "excessive water carryover." When wet plastic fragments are scooped from the tank, a large amount of washing water is carried out along with the material, resulting in an extremely high initial moisture content, typically exceeding 80%. This not only significantly increases the processing load on subsequent dewatering equipment (such as centrifuges and hot air dryers), prolongs drying time, and increases energy consumption, but also causes a large amount of ineffective loss of washing water. To maintain the continuous operation of the washing process, fresh water must be constantly replenished, further increasing overall water consumption and the difficulty and operating cost of subsequent wastewater treatment. Furthermore, because broken plastic films are sheet-like, lightweight, and have a large specific surface area, wet materials easily overlap and entangle during accumulation, forming dense "wet cake" clumps.

[0004] Secondly, wet plastic fragments commonly exhibit "screen adhesion" and "screen blockage" during conveying and dehydration. Because the surface of the fragments is covered with a water film, the surface tension of the water makes them easily adhere tightly to the surface of metal or plastic screens, especially creating a "bridging" effect at the edges of the mesh. Lightweight plastic fragments, with their low weight, are often unable to overcome this adhesion and detach automatically. When a large number of fragments adhere to the screen surface or block the mesh, it not only hinders the normal flow of water, causing abnormal increases in the liquid level in the cleaning tank or even overflow, affecting the cleaning effect, but it can also lead to increased operating resistance in the conveying system, frequent equipment failures, and in severe cases, require shutdown and manual cleaning, seriously impacting production continuity and automation levels. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to provide a plastic film recycling and processing device to solve the problems existing in the background art.

[0006] To address the aforementioned technical problems, the present invention provides a plastic film recycling and processing device for cleaning and recycling crushed plastic film. The device includes a cleaning tank, with an inclined conveyor belt at the end of the tank. The conveyor belt has filter holes and is equipped with a squeezing component. The cleaned fragments are scooped out of the cleaning tank via the conveyor belt. The inclination of the conveyor belt and the filter holes facilitate rapid drainage of the scooped fragments. The squeezing component then further squeezes the scooped fragments, accelerating the drainage process and ensuring the smooth operation of subsequent recycling steps.

[0007] Preferably, the extrusion component includes an extrusion block, the extrusion surface of which is parallel to the conveying surface of the conveyor belt, and the extrusion block is movably disposed on the washing tank or the conveyor belt. When the conveyor belt is running, the extrusion block is moved away from the conveyor belt to avoid affecting the debris retrieval operation of the conveyor belt. When the conveyor belt stops the debris retrieval operation, the extrusion block moves closer to the conveyor belt and extrudes the retrieved debris to accelerate the drainage speed of the debris.

[0008] Furthermore, an extrusion plate is provided on the side of the conveyor belt away from the extrusion block; under the action of the extrusion plate and the extrusion block, the conveyor belt is pressed and dehydrated.

[0009] Furthermore, the extrusion component is equipped with a drive component, which includes a control wheel and a connecting rod; one end of the connecting rod is rotatably connected to the eccentric part of the control wheel, and the other end of the connecting rod is rotatably connected to the extrusion component; when the control wheel rotates, the extrusion component is driven to perform extrusion operations under the action of the connecting rod.

[0010] Furthermore, the extrusion block is slidably disposed on one side of the conveyor belt in a horizontal direction, and the extrusion surface is located on the side of the extrusion block and faces the side of the conveyor belt; the extrusion block is connected to the connecting rod, and the extrusion block is driven to move horizontally through the driving component; the extrusion block and the extrusion plate together clamp the plastic fragments on the conveyor belt to achieve lateral pressing and dehydration.

[0011] Furthermore, the extrusion block moves along the normal direction of the conveyor belt surface, and the extrusion surface is located at the bottom end of the extrusion block and faces the side of the conveyor belt; when the extrusion block presses down vertically, it uniformly presses and dehydrates the plastic fragments on the conveyor belt.

[0012] Furthermore, the extrusion block is equipped with a control block, which is movably mounted on the washing tank or the conveyor belt. The moving direction of the control block is perpendicular to the moving direction of the extrusion block, and the contact surfaces of the extrusion block and the control block are both inclined. The control block is connected to the connecting rod, and the control block is driven to move by the driving component. Under the action of the contact surfaces, the extrusion block is pressed vertically downward.

[0013] Furthermore, the conveyor belt includes a material belt and a drive shaft. A drive wheel is disposed on the drive shaft above the conveyor belt, and a drive wheel is disposed between the drive wheel and the control wheel. When the drive wheel and the drive wheel are engaged, the conveyor belt starts; when the control wheel and the drive wheel are engaged, the extrusion component starts. The alternating start of the conveyor belt and the extrusion component is achieved by the drive wheel alternately engaging with the drive wheel and the control wheel.

[0014] Furthermore, both the transmission wheel and the control wheel are complete gears, while the drive wheel is an incomplete gear. The incomplete gear has teeth with a quarter-circumference length. In each revolution of the incomplete gear, the toothed portion meshes with the control wheel, driving the control wheel to rotate at least one revolution. When the drive wheel rotates, the incomplete teeth periodically and alternately mesh with the transmission wheel and the control wheel to achieve alternating drive between the two. At the same time, the transmission relationship between the incomplete gear and the control wheel is configured to automatically drive the extrusion component to reset after the extrusion component completes its operation.

[0015] Furthermore, the drive shaft located above the conveyor belt is an air-blowing shaft. The air-blowing shaft includes a shaft body arranged in a ring shape, an output air passage provided on the shaft body, the direction of the output air passage being parallel to the axial direction of the shaft body, and the output air passage being ring-shaped on the shaft body; connecting blocks are provided at both ends of the shaft body, and control air passages are provided on the connecting blocks; the control blocks are fixedly mounted on the conveyor belt; by supplying gas into the control air passage, in conjunction with the output air passage, directional air blowing is achieved at the output end of the conveyor belt, avoiding the problem of fragments adhering to the conveyor belt and being difficult to fall off.

[0016] The main technical effects of this invention are reflected in the following aspects:

[0017] By incorporating intermittently operating extrusion components, static pressing and dewatering of wet materials after lifting is achieved, significantly reducing the initial moisture content. Traditional conveyor belts rely solely on gravity for drainage, making it difficult to effectively remove moisture from within and between layers of wet plastic fragments, resulting in a large amount of water carried out. This invention introduces intermittent extrusion during the conveyor belt's operating cycle. Specifically, during brief stops of the conveyor belt, extrusion blocks apply mechanical pressure to the accumulated material, forcibly squeezing out free water and some capillary water between the fragments. This pressing process disrupts the "wet cake" structure formed by the surface tension of the water film in the wet material, making it easier to release moisture. This significantly reduces the initial moisture content of the material, effectively reducing the load on subsequent centrifugal dewatering or hot air drying equipment, and significantly saving energy and operating costs.

[0018] To address the issues of uneven distribution, loose stacking, or excessive local thickness of plastic fragments on conveyor belts, this invention designs the extrusion block to press vertically downwards along the normal direction of the conveyor belt, with its extrusion surface located at the bottom and fully covering the material area. This method applies consistent pressure across the entire material cross-section, avoiding edge leakage or uneven pressure gradients that may occur with lateral extrusion. Vertical pressing is more conducive to compressing the overall thickness of the material, promoting the migration of internal moisture outwards, and is particularly suitable for the dehydration needs of sheet-like lightweight materials, improving the uniformity and reliability of dehydration, and ensuring stable dehydration performance under different operating conditions.

[0019] This invention innovatively utilizes the periodic meshing of an incomplete gear with two complete gears (a drive wheel and a control wheel) to achieve alternating execution of conveyor belt operation and extrusion action under a single power source. When the incomplete gear meshes with the drive wheel, it drives the conveyor belt to lift the material; after rotating a certain angle, it switches to the control wheel, triggering the extrusion action. This purely mechanical timing control scheme requires no PLC programming or sensor feedback, avoiding the risk of electrical system failures in humid environments, reducing equipment costs and maintenance difficulty, while ensuring the accuracy and repeatability of the action rhythm, thus improving the system's automation level and operational safety.

[0020] To address the technical challenge of lightweight plastic fragments adhering to screens due to water film adhesion and difficulty in removal, this invention modifies the upper drive shaft into a hollow air-blowing shaft with an internal air circuit system. When the material reaches the unloading end, compressed air is ejected through directional air outlets on the shaft surface, forming an airflow layer that adheres to the conveyor belt surface. This disrupts the water film tension between the fragments and the screen, weakening the adhesion. This auxiliary air-blowing measure effectively prevents material accumulation and clogging of the filter holes, avoiding liquid level rises or equipment shutdowns caused by "screen blockage," ensuring continuous and stable operation of the conveying system, while reducing the frequency of manual cleaning and improving production efficiency and automation. Attached Figure Description

[0021] Figure 1 This is a structural diagram of the present invention;

[0022] Figure 2for Figure 1 Structural diagram of the conveyor belt;

[0023] Figure 3 for Figure 1 Diagram showing the assembly structure of the extrusion component and the drive component;

[0024] Figure 4 for Figure 1 Structural diagram of the extrusion component;

[0025] Figure 5 for Figure 1 Structural diagram of the drive component;

[0026] Figure 6 for Figure 1 Structural diagram of the central blowing shaft;

[0027] In the diagram: 1. Cleaning tank; 2. Conveyor belt; 21. Material belt; 22. Drive shaft; 3. Extrusion component; 31. Extrusion block; 32. Extrusion plate; 33. Control block; 4. Drive component; 41. Control wheel; 42. Connecting rod; 43. Drive wheel; 44. Drive wheel; 5. Air blowing shaft; 51. Shaft body; 52. Output air passage; 53. Connecting block. Detailed Implementation

[0028] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings, so as to make the technical solution of the present invention easier to understand and master. In the embodiments, it should be understood that the terms "middle," "upper," "lower," "top," "right side," "left end," "above," "back," "center," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. In addition, unless otherwise specified in this specific embodiment, the connection or fixing method between components can be achieved by bolt fixing, pin fixing, or pin connection commonly used in the prior art, etc., and therefore will not be described in detail in this embodiment.

[0029] The plastic film recycling and processing equipment provided by this invention is mainly used in the extraction and pre-dehydration of wet materials after waste plastic film is crushed, and is especially suitable for the intermediate processing stage after the washing process and before centrifugal dehydration or hot air drying. However, it is not limited to this. The equipment can also be used for the wet material lifting and preliminary dehydration treatment of other similar or lightweight sheet materials (such as pulp fragments, textile scraps, agricultural films, etc.) in the washing process, and has good process adaptability and promotion value.

[0030] Furthermore, as is common knowledge in this industry, the structure of the washing tank 1, the basic transmission principle of the conveyor belt 2, the opening method of the filter holes, and the conventional sprocket, gear, and eccentric wheel drive mechanisms mentioned above are all standard technical methods in the field of plastic recycling equipment. Since these are common knowledge, their principles and structures will not be elaborated upon further.

[0031] Example 1

[0032] See Figure 1 This embodiment discloses a plastic film recycling and processing device for cleaning and recycling crushed plastic film. It includes a cleaning tank 1, with an inclined conveyor belt 2 at the end of the cleaning tank 1. The conveyor belt 2 has filter holes and is equipped with a pressing component 3. The cleaned fragments are scooped out of the cleaning tank 1 via the conveyor belt 2. The inclination of the conveyor belt 2 and the action of the filter holes achieve rapid drainage (initial gravity drainage) of the scooped fragments from the cleaning tank 1. The pressing component 3 then presses the scooped fragments, thereby accelerating the drainage speed and ensuring the smooth progress of subsequent recycling steps.

[0033] Further, see Figure 2 , Figure 3 , Figure 4 This invention innovatively introduces an intermittent dynamic extrusion dewatering mechanism, building upon the traditional method of gravity-based drainage. Through mechanical pressing, forced dewatering is achieved during the static phase after the wet material is lifted, significantly improving dewatering efficiency per unit time, reducing initial moisture content, and thus lessening the load on subsequent dewatering equipment, saving energy and water resources. Specifically: the extrusion component 3 includes an extrusion block 31, the extrusion surface of which is parallel to the conveyor surface of the conveyor belt 2. The extrusion block 31 is movably positioned on the washing tank 1 or the conveyor belt 2. During conveyor belt 2 operation, the extrusion block 31 is positioned at a safe distance from the conveyor belt 2 to avoid affecting the debris retrieval operation. When the conveyor belt 2 completes one lifting action and stops debris retrieval, the extrusion block 31, under the action of the driving component 4, approaches the conveyor belt 2, directionally extruding the wet plastic debris accumulated on the surface of the conveyor belt 2, further squeezing out the moisture trapped inside and between layers of the material, thereby accelerating the overall drainage speed and improving the dewatering effect.

[0034] Further, see Figure 2 , Figure 3To achieve a more thorough pressing effect, an extrusion plate 32 is provided on the side of the conveyor belt 2 away from the extrusion block 31. The extrusion plate 32 is fixedly installed on the support structure of the conveyor belt 2, forming an opposing clamping structure with the extrusion block 31. During the advancement of the extrusion block 31, plastic fragments are clamped between the extrusion block 31 and the extrusion plate 32, forming a "sandwich pressing" mode, which effectively disrupts the capillary water network inside the wet material clumps, breaks the "wet cake" structure caused by surface tension, and significantly improves the dehydration rate.

[0035] Preferred, see Figure 3 , Figure 5 The extrusion component 3 is equipped with a drive component 4, which includes a control wheel 41 and a connecting rod 42. One end of the connecting rod 42 is rotatably connected to the eccentric part of the control wheel 41, and the other end of the connecting rod 42 is rotatably connected to the extrusion component 3. When the control wheel 41 rotates, its eccentric motion is converted into the reciprocating linear motion of the extrusion block 31 through the connecting rod 42, thereby realizing periodic extrusion and resetting actions.

[0036] In this embodiment, the extrusion block 31 is slidably disposed on one side of the conveyor belt 2 in a horizontal direction, and the extrusion surface is located on the side of the extrusion block 31 and faces the side of the conveyor belt 2. The extrusion block 31 is connected to the connecting rod 42, and the extrusion block 31 is driven to move horizontally by the driving component 4. The extrusion block 31 and the extrusion plate 32 together clamp the plastic fragments on the conveyor belt 2 to achieve lateral pressing and dehydration. This structure is suitable for situations where sheet materials are stacked thickly in the lateral direction, which is beneficial for breaking the adhesion of water films between the sheet layers.

[0037] Further, see Figure 3 , Figure 5To achieve coordinated control of the operation of the conveyor belt 2 and the extrusion action, the conveyor belt 2 includes a material belt 21 and a drive shaft 22. A drive wheel 43 is installed on the drive shaft 22 above the conveyor belt 2. A drive wheel 44 is installed between the drive wheel 43 and the control wheel 41. The drive wheel is equipped with an independent drive motor (not shown in the figure). When the drive wheel 43 and the drive wheel 44 mesh, the conveyor belt 2 starts to lift the wet material. When the control wheel 41 and the drive wheel 44 mesh, the extrusion component 3 starts. Through the alternating meshing of the drive wheel 44 with the drive wheel 43 and the control wheel 41, the conveyor belt 2 and the extrusion component 3 are alternately started, completing one extrusion-reset cycle. Through the periodic switching of this incomplete gear, the time-staggered and alternating operation of the two major actions of conveying and extrusion is achieved. Automated coordinated operation can be achieved without additional motors or complex electrical control systems. The structure is compact, low-cost, and easy to maintain. Specifically, the transmission wheel 43 and the control wheel 41 are both complete gears, while the drive wheel 44 is an incomplete gear. The incomplete gear has teeth with a quarter-circumference length. In each rotation cycle of the incomplete gear, the toothed portion meshes with the control wheel 41, driving the control wheel 41 to rotate at least one revolution. When the drive wheel 44 rotates, the incomplete teeth periodically mesh alternately with the transmission wheel 43 and the control wheel 41 to achieve alternating drive between the two. At the same time, the transmission relationship between the incomplete gear and the control wheel 41 is configured to automatically drive the extrusion component 3 to reset after the extrusion component 3 completes its operation.

[0038] In addition, see Figure 6 To address the problem of plastic fragments sticking to the conveyor belt at the end of the conveyor due to strong surface adhesion and difficulty in falling off, this embodiment integrates and modifies the upper drive shaft 22: the drive shaft 22 located above the conveyor belt 2 is a blowing shaft 5 (the specific structure can be referenced from the vacuum adsorption roller). The blowing shaft 5 includes a ring-shaped arrangement on the shaft body 51, and an output air passage 52 is provided on the shaft body 51. The direction of the output air passage 52 is parallel to the axial direction of the shaft body 51. The output air passage 52 and the ring arrangement on the shaft body 51 are provided. Connecting blocks 53 are provided at both ends of the shaft body 51, and control air passages are provided on the connecting blocks 53. The control blocks 33 are fixedly mounted on the conveyor belt 2. By supplying gas into the control air passages, and in cooperation with the output air passages 52, directional blowing of air is achieved at the output end of the conveyor belt 2, avoiding the problem of fragments adhering to the conveyor belt 2 and being difficult to fall off. The airflow direction is consistent with or at a certain angle to the running direction of conveyor belt 2. When the material reaches the unloading end, an auxiliary blowing force can be applied to effectively break the water film adsorption force between the fragments and the screen, prevent the phenomenon of "screen blockage" and "screen sticking", ensure that the material falls off smoothly, and improve the conveying efficiency and automation continuity.

[0039] Example 2

[0040] This embodiment discloses a plastic film recycling and processing device. Compared with the first embodiment, this embodiment focuses on optimizing the movement mode of the extrusion and dehydration mechanism. In particular, it improves the uniformity and adaptability of extrusion and dehydration for complex working conditions such as uneven distribution of wet plastic fragments on the conveyor belt 2, loose stacking, or thick local accumulation.

[0041] In this embodiment, the extrusion block 31 moves along the normal direction of the surface of the conveyor belt 2, and the extrusion surface is located at the bottom end of the extrusion block 31 and faces the side of the conveyor belt 2. When the extrusion block 31 presses down vertically, it applies uniform pressure to the material, realizing overall pressing from top to bottom, resulting in more uniform dehydration. This is suitable for working conditions where the material distribution is relatively loose or the thickness is uneven.

[0042] Furthermore, to achieve a smooth transition of the vertical extrusion action, a control block 33 is equipped on the extrusion block 31. The control block 33 is movably mounted on the washing tank 1 or the conveyor belt 2, and its movement direction is perpendicular to that of the extrusion block 31. The contact surfaces of the extrusion block 31 and the control block 33 are both inclined. The control block 33 is connected to the connecting rod 42, and the drive component 4 drives the control block 33 to move. Under the action of the contact surfaces, the extrusion block 31 is vertically pressed down, realizing the change of the movement direction. The structure is simple and the operation is reliable. By optimizing the extrusion block 31 to a vertical pressing motion and combining it with the inclined plane driven motion conversion mechanism, efficient, uniform, and controllable pressing and dehydration of wet plastic fragments is achieved, which is particularly suitable for actual working conditions with varying material states. This design not only improves dehydration performance but also enhances the stability and automation of equipment operation, further reducing the energy consumption and water treatment burden of subsequent drying processes, demonstrating significant technological advancement and practical value.

[0043] Of course, the above are just typical examples of the present invention. In addition, the present invention may have many other specific embodiments. All technical solutions formed by equivalent substitution or equivalent transformation fall within the scope of protection claimed by the present invention.

Claims

1. A plastic film recycling and processing device for cleaning and recycling crushed plastic film; characterized in that: The system includes a cleaning tank, at the end of which is an inclined conveyor belt with filter holes and a squeezing component. The cleaned fragments are scooped out of the cleaning tank by the conveyor belt. The inclination of the conveyor belt and the action of the filter holes enable rapid drainage of the fragments from the cleaning tank. The extrusion component then compresses the retrieved fragments, thereby accelerating the drainage of the fragments and ensuring the smooth progress of subsequent recycling processes.

2. The plastic film recycling and processing equipment as described in claim 1, characterized in that: The extrusion component includes an extrusion block, the extrusion surface of which is parallel to the conveying surface of the conveyor belt, and the extrusion block is movably disposed on the washing tank or the conveyor belt; When the conveyor belt is running, the squeezing block is away from the conveyor belt to avoid affecting the debris retrieval operation of the conveyor belt; when the conveyor belt stops the debris retrieval operation, the squeezing block is close to the conveyor belt and squeezes the retrieved debris to speed up the drainage of the debris.

3. The plastic film recycling and processing equipment as described in claim 2, characterized in that: An extrusion plate is provided on the side of the conveyor belt away from the extrusion block; The conveyor belt is pressed and dehydrated under the action of the extrusion plate and the extrusion block.

4. The plastic film recycling and processing equipment as described in claim 3, characterized in that: The extrusion component is equipped with a drive component, which includes a control wheel and a connecting rod; One end of the connecting rod is rotatably connected to the eccentric part of the control wheel, and the other end of the connecting rod is rotatably connected to the extrusion component; When the control wheel rotates, it drives the extrusion component to perform an extrusion operation under the action of the connecting rod.

5. The plastic film recycling and processing equipment as described in claim 4, characterized in that: The extrusion block is slidably disposed on one side of the conveyor belt in a horizontal direction, and the extrusion surface is located on the side of the extrusion block and faces the side of the conveyor belt; The extrusion block is connected to the connecting rod, and the extrusion block is driven to move horizontally by the driving component. The extrusion block and the extrusion plate together clamp the plastic fragments on the conveyor belt to achieve lateral pressing and dehydration.

6. The plastic film recycling and processing equipment as described in claim 4, characterized in that: The extrusion block moves along the normal direction of the conveyor belt surface, and the extrusion surface is located at the bottom end of the extrusion block and faces the side of the conveyor belt. When the extrusion block presses down vertically, it uniformly presses and dehydrates the plastic fragments on the conveyor belt.

7. The plastic film recycling and processing equipment as described in claim 6, characterized in that: The extrusion block is equipped with a control block, which is movably mounted on the washing tank or the conveyor belt. The moving direction of the control block is perpendicular to the moving direction of the extrusion block, and the contact surfaces of the extrusion block and the control block are both inclined. The control block is connected to the connecting rod, and the control block is moved by the driving component. Under the action of the contact surface, the extrusion block is pressed down vertically.

8. The plastic film recycling and processing equipment as described in any one of claims 4 to 6, characterized in that: The conveyor belt includes a material belt and a drive shaft. A drive wheel is provided on the drive shaft located above the conveyor belt, and a drive wheel is provided between the drive wheel and the control wheel. When the transmission wheel and the drive wheel mesh, the conveyor belt starts; when the control wheel and the drive wheel mesh, the extrusion component starts; the alternating starting of the conveyor belt and the extrusion component is achieved by the drive wheel alternately meshing with the transmission wheel and the control wheel.

9. The plastic film recycling and processing equipment as described in claim 8, characterized in that: Both the transmission wheel and the control wheel are complete gears, while the drive wheel is an incomplete gear. The incomplete gear has teeth with a circumference of one-quarter arc length. In each rotation cycle of the incomplete gear, the toothed portion meshes with the control wheel, driving the control wheel to rotate at least one revolution. When the drive wheel rotates, the incomplete gear periodically meshes alternately with the transmission wheel and the control wheel to achieve alternating drive between the two; at the same time, the transmission relationship between the incomplete gear and the control wheel is configured to automatically drive the extrusion component to reset after the extrusion component completes its working action.

10. The plastic film recycling and processing equipment as described in claim 8, characterized in that: The drive shaft located above the conveyor belt is an air blowing shaft. The air blowing shaft includes a shaft body arranged in a ring shape, an output air passage provided on the shaft body, the direction of the output air passage being parallel to the axial direction of the shaft body, and the output air passage being arranged in a ring shape on the shaft body; connecting blocks are provided at both ends of the shaft body, and control air passages are provided on the connecting blocks; the control blocks are fixedly mounted on the conveyor belt. By supplying gas into the control air path, and in conjunction with the output air path, directional air blowing is achieved at the output end of the conveyor belt, thus avoiding the problem of fragments adhering to the conveyor belt and being difficult to fall off.

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