A waste mulch cutting, baling and shredding device

Abstract

The application discloses a kind of waste plastic film cutting package crushing device, for being cut to package crushing to bundle waste plastic film, it includes: sequentially connected cutting package mechanism waste plastic film, primary crushing mechanism waste plastic film, secondary fine crushing mechanism waste plastic film and angle adjustable discharge port mechanism waste plastic film;Cutting package mechanism waste plastic film is funnel-shaped, multiple cutter disc cutting components waste plastic film are arranged in its side wall, for cutting package to bundle waste plastic film;Primary crushing mechanism waste plastic film is used to cut the primary cutting of waste plastic film after cutting package, and waste plastic film after cutting is entered secondary fine crushing mechanism waste plastic film and is cut secondly, and the secondary fine crushing mechanism waste plastic film is used as fan, and waste plastic film after second cutting is blown out according to predetermined angle by angle adjustable discharge port mechanism waste plastic film.This waste plastic film cutting package crushing device can effectively solve the problems of original device blade heating sticking, cutting not smooth, easy to block, etc., while realizing material disorderly feeding.

Description

Technical Field

[0001] This invention relates to the field of agricultural equipment, specifically to a waste plastic film cutting and crushing device. Background Technology

[0002] With the rapid development of large-scale agricultural production, agricultural mechanization has become increasingly important. This includes mechanization in planting, harvesting, green manure production, and post-harvest processing, as well as mechanized livestock farming. The use of plastic film mulching in agricultural planting is also becoming more and more common. Plastic film mulching technology plays a crucial supporting role in developing dryland agriculture using limited water resources. However, along with this rapid development in agricultural production, the amount of waste plastic film generated in the agricultural production environment is also increasing.

[0003] While mechanized recycling technology for agricultural plastic film has made some progress, how to process the recycled film remains a critical issue that urgently needs to be addressed. Mechanically recycled film is mainly divided into two forms: bundled and loose. Compared to loose film, bundled waste film has advantages such as high compactness and convenient transportation, making it the main development trend in mechanized recycling technology. However, the bundled waste film recycled mechanically contains a large amount of straw, soil, and other impurities, requiring pretreatment before resource utilization. Crushing the bundled waste film is the primary step in pretreatment. Therefore, research on mechanized bundled waste film crushing technology is crucial to ensuring the effectiveness of subsequent pretreatment and the quality of recycled products.

[0004] The resource utilization of collected waste plastic film is indeed a challenge. The key to this is breaking up bundles of waste plastic film and separating impurities, thus necessitating an effective method for breaking up these bundles. This patent proposes a method for recycling bundled waste plastic film, addressing the problems of complex and bulky impurities. Based on a comprehensive consideration of the material characteristics of bundled waste plastic film and the advantages and disadvantages of existing impurity breaking devices, it proposes a method of first cutting the bundles and then breaking them up.

[0005] Existing plastic film recycling technologies have the following drawbacks:

[0006] 1. The original waste plastic film crushing device suffers from problems such as blades overheating and sticking, preventing continuous operation, and poor material feeding and discharging, making it impossible to feed materials in an orderly manner.

[0007] 2. Existing waste plastic film crushing devices can only crush loose film materials to a certain extent, but they cannot be completely effective in crushing and separating the bundled waste plastic film materials recycled by domestic waste plastic film recycling machines.

[0008] 3. Existing waste plastic film crushing devices have complex structures and high costs, increasing the cost of plastic film crushing machinery and resource utilization.

[0009] 4. The existing waste plastic film crushing device cannot be combined with the mixed film separation device, and cannot directly realize resource utilization (granulation, oil refining, other plastic parts). Summary of the Invention

[0010] In view of the above-mentioned defects and shortcomings of the existing technology, the present invention aims to solve the problems of blade overheating, blade sticking and easy clogging in the original device. This design uses a disc blade to cut the bundled membrane debris. The disc blades are arranged in a five-section longitudinal and transverse cutting pattern, which can unorderly put the recycled material into the device and reduce the difficulty of the initial work.

[0011] To achieve the above objectives, the present invention provides a waste plastic film cutting and crushing device for cutting and crushing bundled waste plastic film. It comprises: a cutting mechanism for waste plastic film, a primary crushing mechanism for waste plastic film, a secondary fine crushing mechanism for waste plastic film, and an angle-adjustable discharge port mechanism for waste plastic film, connected in sequence. The cutting mechanism for waste plastic film is funnel-shaped, with multiple cutter discs on its sidewalls for cutting bundles of waste plastic film. The primary crushing mechanism for waste plastic film performs initial cutting on the bundled waste plastic film. The cut waste plastic film then enters the secondary fine crushing mechanism for secondary cutting. The secondary fine crushing mechanism also functions as a fan, blowing the secondary-cut waste plastic film out through the angle-adjustable discharge port mechanism at a predetermined angle.

[0012] A further improvement of the present invention is that the waste mulch film cutting assembly includes: a cutting disc blade waste mulch film, a cutting disc blade drive motor waste mulch film, and a cutting disc blade protective plate waste mulch film; the cutting disc blade drive motor waste mulch film and the cutting disc blade waste mulch film are connected in a transmission manner and are installed on the side wall of the waste mulch film of the cutting mechanism; the cutting disc blade waste mulch film extends from the strip-shaped gap of the side wall of the waste mulch film of the cutting mechanism into the waste mulch film in the feeding channel formed by the side wall of the waste mulch film of the cutting mechanism; the cutting disc blade protective plate waste mulch film is installed on the outside of the side wall of the waste mulch film of the cutting mechanism to cover the part of the cutting disc blade waste mulch film located outside the waste mulch film in the feeding channel.

[0013] A further improvement of the present invention is that the radius of the waste plastic film cutting disc is 400mm, and the rotational speed of the disc drive motor for the waste plastic film is not less than 1200r / min.

[0014] A further improvement of the present invention is that the waste plastic film cutting mechanism, the waste plastic film primary crushing mechanism, and the waste plastic film secondary fine crushing mechanism are arranged sequentially from top to bottom.

[0015] A further improvement of the present invention is that: the waste mulch film of the primary crushing mechanism includes waste mulch film of the primary crushing mechanism housing, waste mulch film of the primary crushing mechanism cutter holder, waste mulch film of the primary crushing mechanism partition, and waste mulch film of the adjustable blades; the waste mulch film of the primary crushing mechanism housing is provided with an inlet at the top and an outlet at the bottom; the waste mulch film of the primary crushing mechanism cutter holder is arranged laterally; multiple plate-shaped waste mulch films of the primary crushing mechanism partition are parallel to each other, spaced apart, and perpendicular to the axial direction of the waste mulch film of the primary crushing mechanism cutter holder; the waste mulch film of the adjustable blades... The old plastic film is installed on the waste plastic film of the primary crushing mechanism's blade holder, and each adjustable blade of waste plastic film is located in the gap between the waste plastic film of the adjacent primary crushing mechanism partition. When the waste plastic film of the primary crushing mechanism's blade holder rotates, each adjustable blade of waste plastic film is used to perform the initial cut on the waste plastic film falling on the top edge of the waste plastic film of the primary crushing mechanism partition. The cut waste plastic film falls through the gap between the waste plastic film of the primary crushing mechanism partition and falls into the waste plastic film of the secondary fine crushing mechanism through the opening at the bottom of the waste plastic film of the primary crushing mechanism housing.

[0016] A further improvement of the present invention is that: the waste mulch film of the secondary fine crushing mechanism includes waste mulch film of the secondary fine crushing mechanism housing, waste mulch film of the roller-type cutter holder arranged laterally, and multiple waste mulch film with serrated blades; each waste mulch film with serrated blades is strip-shaped and radially distributed on the circumferential surface of the waste mulch film of the roller-type cutter holder, with serrated cutting parts provided on its outer edge, and its inner edge connected to the waste mulch film of the roller-type cutter holder and parallel to the axis of the waste mulch film of the roller-type cutter holder; the waste mulch film of the secondary fine crushing mechanism housing is provided with at least two pieces of fixed blade waste mulch film; the fixed blades... The extension direction of the blade waste plastic film is also parallel to the axis of the roller-type blade holder waste plastic film, and its side facing the roller-type blade holder waste plastic film is also provided with a serrated cutting part; when the roller-type blade holder waste plastic film rotates, each of the serrated blade waste plastic film cooperates with the fixed blade waste plastic film to perform secondary cutting of the waste plastic film into fragments, and the serrated blade waste plastic film also serves as the blade to extract airflow; the top of the waste plastic film in the secondary fine crushing mechanism box is provided with an inlet, and the waste plastic film after secondary cutting, along with the airflow, is discharged from the opening at the bottom of the waste plastic film in the secondary fine crushing mechanism box.

[0017] A further improvement of the present invention is that: the angle-adjustable discharge port mechanism for waste mulch film includes a fixed duct waste mulch film and an adjustable nozzle waste mulch film; the inlet at the top of the fixed duct waste mulch film is connected to the bottom opening of the waste mulch film in the secondary fine crushing mechanism box, and its bottom outlet is connected to the adjustable nozzle waste mulch film, which is used to discharge the crushed waste mulch film along with the airflow obliquely upward.

[0018] The advantages of this invention are as follows:

[0019] (1) The cutting mechanism of the present invention uses a drive motor to drive a disc cutter to cut bundled film debris, effectively solving the problems of blade overheating and sticking, poor cutting and easy blockage of the original device, while realizing disordered material feeding.

[0020] (2) This invention uses a cutting and packaging mechanism to cut large bundles of plastic film into smaller pieces. These smaller pieces are then subjected to primary crushing by a primary crushing mechanism. After primary crushing, the film enters a secondary fine crushing mechanism for secondary dust treatment. This process can uniformly and effectively pulverize the recycled bundles of plastic film and provide a guarantee for subsequent grading and screening.

[0021] (3) This device has a simple structure and multiple functions, reducing recycling costs. The primary crushing mechanism rotates clockwise, and the secondary fine crushing mechanism rotates counterclockwise. The two work together to change the direction of the fine film after crushing. Under high-speed rotation, it generates acceleration towards the blowing port, which can effectively achieve continuous blowing.

[0022] (4) After the fine plastic film is crushed by the present invention, it falls to different distances under the action of gravity due to its different mass. Combined with the mass of the debris and the plastic film itself, the plastic film and debris of different degrees of crushing fall into different collection hoppers. The sorted fine plastic film can be directly used for resource utilization (oil refining, granulation, making plastic pallets, making other plastic parts), effectively solving the problem of white pollution. Attached Figure Description

[0023] Figure 1 This is a side view of the waste plastic film cutting and crushing device of the present invention;

[0024] Figure 2 This is a schematic diagram illustrating the working process of the waste plastic film cutting and crushing device of the present invention;

[0025] Figure 3 This is a schematic diagram of the package cutting mechanism in this invention;

[0026] Figure 4 This is a top view of the package cutting mechanism in this invention;

[0027] Figure 5 This is a schematic diagram of the primary crushing mechanism in this invention;

[0028] Figure 6 This is a schematic diagram of the primary crushing mechanism partition and the primary crushing mechanism cutter holder in this invention;

[0029] Figure 7 This is a perspective view of the secondary fine crushing mechanism in this invention;

[0030] Figure 8 This is a schematic diagram of the roller-type tool holder and the fixed blade in this invention;

[0031] Figure 9 This is a perspective view of the angle-adjustable discharge port mechanism of the present invention. Detailed Implementation

[0032] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that, unless otherwise specified, the following embodiments and features described therein can be combined with each other.

[0033] Some exemplary embodiments of the invention have been described for illustrative purposes. It should be understood that the invention may be implemented in other ways not specifically shown in the accompanying drawings.

[0034] like Figure 1 , Figure 2 As shown, an embodiment of the present invention provides a waste plastic film cutting and crushing device, which includes: a cutting mechanism 10, a primary crushing mechanism 20, a secondary fine crushing mechanism 30 and an angle-adjustable discharge port mechanism 40 connected in sequence.

[0035] The bale-cutting mechanism 10 is funnel-shaped, with multiple cutter head cutting components 11 on its side walls for cutting bundles of waste plastic film. The primary crushing mechanism 20 performs the initial cutting of the bale-cut waste plastic film. The cut waste plastic film then enters the secondary fine crushing mechanism 30 for further cutting. The secondary fine crushing mechanism 30 also functions as a blower, blowing the secondary-cut waste plastic film out at a predetermined angle through an angle-adjustable discharge port mechanism 40. The bale-cutting mechanism 10, the primary crushing mechanism 20, and the secondary fine crushing mechanism 30 are arranged sequentially from top to bottom. Figure 2 As shown, Figure 2 The red arrow indicates the movement path of the waste plastic film, the green arrow indicates the rotation direction of the cutting disc 12, the blue arrow indicates the rotation direction of the primary crushing mechanism cutter holder 22, and the brown arrow indicates the rotation direction of the drum-type cutter holder 32.

[0036] like Figure 2 , Figure 3 , Figure 4As shown, the cutting disc assembly 11 includes a cutting disc blade 12, a cutting disc blade drive motor 13, and a cutting disc blade protective plate 14. The cutting disc blade drive motor 13 and the cutting disc blade 12 are connected by a drive and are installed on the side wall of the cutting mechanism 10. The cutting disc blade 12 extends from the gap in the side wall of the cutting mechanism 10 into the feeding channel 15 formed by the side wall of the cutting mechanism 10. The cutting disc blade protective plate 14 is installed on the outside of the side wall of the cutting mechanism 10 to cover the part of the cutting disc blade 12 located outside the feeding channel 15.

[0037] The rotating shaft of the cutting disc blade 12 is arranged horizontally, allowing it to vertically cut the bundled waste plastic film fed into the feeding channel 15. The diameter of the bundled waste plastic film is 600mm~800mm; the length is 1600mm~2000mm. To accommodate this size of bundled waste plastic film, the feed inlet is designed with a length of 2100mm and a width of 900mm. In this embodiment, the cutting mechanism 10 has a rectangular cross-section, comprising four opposing sidewalls, each sidewall having at least one set of blade cutting assemblies 11. For any two opposing sidewalls, the blade cutting assemblies 11 are arranged opposite each other. The radius of the cutting disc blade 12 is 400mm, and the rotation speed of the disc blade drive motor 13 is not less than 1200r / min.

[0038] Since debris inevitably gets caught in the bundles of waste plastic film during mechanized recycling, they must be cut into smaller pieces by a cutting mechanism before entering the crushing stage. This ensures that the primary crushing mechanism operates without jamming, enabling continuous operation. Simultaneously, the cutting mechanism is designed with cutting performance in mind, using three sets of opposing cutter discs 11 to cut the bundles of waste plastic film into five smaller pieces, allowing for unordered material delivery.

[0039] like Figure 2 , Figure 5 , Figure 6 As shown, the primary crushing mechanism 20 includes a primary crushing mechanism housing 21, a primary crushing mechanism cutter holder 22, a primary crushing mechanism partition 23, and adjustable blades 24. The primary crushing mechanism housing 21 has an inlet at the top and an outlet at the bottom. The primary crushing mechanism cutter holder 22 is arranged laterally. Multiple plate-shaped primary crushing mechanism partitions 23 are parallel to each other and spaced apart, and are perpendicular to the axial direction of the primary crushing mechanism cutter holder 22. The adjustable blades 24 are installed on the primary crushing mechanism cutter holder 22, and each adjustable blade 24 is located in the gap between adjacent primary crushing mechanism partitions 23.

[0040] When the primary crushing mechanism cutter holder 22 rotates, each adjustable blade 24 is used to perform initial cutting on the waste plastic film falling on the top edge of the primary crushing mechanism partition 23; the cut waste plastic film falls through the gap between the primary crushing mechanism partitions 23 and falls into the secondary fine crushing mechanism 30 through the opening at the bottom of the primary crushing mechanism housing 21. The primary crushing mechanism partition 23 is mounted on the main shaft, and the end of the main shaft is connected to a pulley and connected to the drive motor through a belt to drive the primary crushing mechanism cutter holder 22 to rotate.

[0041] The blades on the primary crushing mechanism's cutter holder 22 feature an adjustable design, with each adjustable blade 24 mounted on it via a detachable structure. The primary crushing mechanism 20 operates in a harsh environment, making the blades susceptible to damage from foreign objects. The detachable design allows for easy replacement of worn or damaged adjustable blades, reducing operating and maintenance costs. Furthermore, the adjustable blades 24 can be combined in various arrangements, such as spiral or staggered blade arrangements, to achieve different crushing effects.

[0042] During the crushing process, the upper edge of the primary crushing mechanism partition 23 can support large, uncut pieces of waste plastic film. After cutting, smaller pieces of waste plastic film can fall through the gaps between the primary crushing mechanism partitions 23. During this process, the adjustable blades also act as a downward pusher.

[0043] like Figure 1 , Figure 7 , Figure 8 As shown, the secondary fine crushing mechanism 30 includes a secondary fine crushing mechanism housing 31, a transversely arranged roller-type cutter holder 32, and multiple serrated blades 33. Each serrated blade 33 is strip-shaped and radially distributed on the circumference of the roller-type cutter holder 32. Its outer edge is provided with a serrated cutting section, and its inner edge is connected to the roller-type cutter holder 32 and parallel to the axis of the roller-type cutter holder 32. The secondary fine crushing mechanism housing 31 is provided with at least two fixed blades 34. The extension direction of the fixed blades 34 is also parallel to the axis of the roller-type cutter holder 32, and its side facing the roller-type cutter holder 32 is also provided with a serrated cutting section. When the roller-type cutter holder 32 rotates, each serrated blade 33 cooperates with the fixed blades 34 to perform secondary cutting of the waste plastic film into fragments, and the serrated blades 33 also serve as blades to extract airflow. The top of the secondary fine crushing mechanism housing 31 is provided with an inlet, and the secondary-cut waste plastic film, along with the airflow, is discharged from the opening at the bottom of the secondary fine crushing mechanism housing 31.

[0044] The cutting part of the fixed blade 34 is adapted to the cutting part of the serrated blade 33. When the fixed blade 34 and the serrated blade 33 are adjacent and coplanar, the serrated cutting part of the fixed blade 34 and the serrated cutting part of the serrated blade 33 interlock to form an interlocking structure. As the roller blade holder 32 rotates, when the serrated blade 33 passes the fixed blade 34, the cutting parts of the two perform secondary cutting on the waste plastic film to form fragments.

[0045] In this embodiment, the number of serrated blades 33 is 8. Viewed from the end face of the roller-type blade holder 32, the serrated blades 33 are radially distributed, with an included angle of 45° between adjacent blades 33. Using serrated blades also reduces the risk of waste plastic film accumulating and tangling. The roller-type blade holder 32 and the serrated blades 33 combine to form an impeller-like structure, allowing the serrated blades 33 to generate airflow during high-speed rotation.

[0046] The residual film crushing device has an inlet only at the top cutting mechanism 10 and an outlet at the angle-adjustable discharge port mechanism 40; the airflow generated by the secondary fine crushing mechanism 30 also moves along this path, entering from the inlet and exiting from the outlet. During this process, the airflow not only carries the waste film after secondary cutting out, but also blows over the adjustable blades 24, the serrated blades 33, and the waste film being cut, carrying away some heat and reducing the risk of overheating and sticking to the blades.

[0047] In this embodiment, the cutter head cutting assembly 11, the primary crushing mechanism 20, and the secondary fine crushing mechanism 30 crush the bundled waste plastic film in three stages. The cutter head cutting assembly 11 cuts the bundled waste plastic film into smaller, more dispersed pieces, allowing the primary crushing mechanism 20 and the secondary fine crushing mechanism 30 to operate at appropriate speeds, resulting in a uniform power distribution across all stages. This optimal power distribution also ensures a uniform cutting volume across all stages, reducing heat generated by friction during cutting and minimizing the risks of overheating, blade sticking, and blockage. This improves overall cutting and crushing efficiency, allowing for the unordered disposal of bundled waste plastic film and reducing the difficulty of using the waste plastic film cutting and crushing device. In some specific embodiments, the primary crushing mechanism 20 operates at a low speed and high torque, while the secondary fine crushing mechanism 30 operates at a high speed, enabling it to perform high-frequency cutting of the waste plastic film and generate sufficiently strong airflow. This reasonable power distribution method can avoid excessive power consumption and prevent the machine from being under high power conditions for a long time, which would affect its lifespan.

[0048] like Figure 9As shown, the angle-adjustable discharge port mechanism 40 includes a fixed air duct 41 and an adjustable nozzle 42; the inlet at the top of the fixed air duct 41 is connected to the bottom opening of the secondary fine crushing mechanism box 31, and the bottom outlet is connected to an adjustable nozzle. The adjustable nozzle 42 is used to discharge the waste plastic film along with the airflow obliquely upward for subsequent air separation.

[0049] The waste plastic film cutting and crushing device of this invention has a simple structure, is easy to manufacture, and has high economic value. It effectively solves problems such as easy clogging during machine operation, blade overheating during cutting, and blade sticking. It also allows for disordered material feeding, ensuring stable and continuous machine operation. Different crushing effects of waste plastic film are achieved through a detachable assembly cutting and crushing mechanism, a primary crusher, and a secondary fine crushing mechanism. Simultaneously, crushed plastic film, mixed soil, crushed straw, and other materials are blown out at high speed through the discharge port. Based on the different masses of the debris, crushed plastic film, and small pieces of plastic film, their different masses are blown out at different distances under the influence of gravity. The crushed plastic film and debris are collected through different collection hoppers, allowing for different resource utilization of the plastic film at different degrees of crushing (oil refining, granulation, making plastic pallets, making other plastic parts, etc.). This greatly promotes environmental protection, significantly improving both post-recycling resource utilization and environmental protection during the recycling process.

[0050] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A waste plastic film cutting and crushing device, used for cutting and crushing bundled waste plastic film, characterized in that... include: The package is connected in sequence to a cutting and baling mechanism (10), a primary crushing mechanism (20), a secondary fine crushing mechanism (30), and an angle-adjustable discharge port mechanism (40). The cutting and baling mechanism (10) is funnel-shaped, and its side wall is provided with multiple cutter disc cutting components (11) for cutting bundles of waste plastic film. The primary crushing mechanism (20) is used to perform the initial cutting of the waste plastic film after cutting. The cut waste plastic film enters the secondary fine crushing mechanism (30) for secondary cutting. The secondary fine crushing mechanism (30) also functions as a fan, which blows the secondary cut waste plastic film out at a predetermined angle through the angle-adjustable discharge port mechanism (40). The cutting disc assembly (11) includes: a cutting disc blade (12), a disc blade drive motor (13), and a disc blade protective plate (14); the disc blade drive motor (13) and the cutting disc blade (12) are connected by a drive and are installed on the side wall of the cutting mechanism (10). The cutting disc blade (12) extends from the gap in the side wall of the cutting mechanism (10) into the feeding channel (15) formed by the side wall of the cutting mechanism (10); the disc blade protective plate (14) is installed on the outside of the side wall of the cutting mechanism (10) to cover the part of the cutting disc blade (12) located outside the feeding channel (15); The primary crushing mechanism (20) includes a primary crushing mechanism housing (21), a primary crushing mechanism cutter holder (22), a primary crushing mechanism partition (23), and adjustable blades (24); the primary crushing mechanism housing (21) has an inlet at the top and an outlet at the bottom; the primary crushing mechanism cutter holder (22) is arranged laterally; multiple plate-shaped primary crushing mechanism partitions (23) are parallel to each other and spaced apart, and perpendicular to the axial direction of the primary crushing mechanism cutter holder (22); the adjustable blades (24) are installed on... On the primary crushing mechanism cutter holder (22), each adjustable blade (24) is located in the gap between adjacent primary crushing mechanism partitions (23). When the primary crushing mechanism cutter holder (22) rotates, each adjustable blade (24) is used to perform initial cutting on the waste plastic film falling on the top edge of the primary crushing mechanism partition (23). The cut waste plastic film falls through the gap between the primary crushing mechanism partitions (23) and falls into the secondary fine crushing mechanism (30) from the opening at the bottom of the primary crushing mechanism housing (21). The secondary fine crushing mechanism (30) includes a secondary fine crushing mechanism housing (31), a roller-type cutter holder (32) arranged laterally, and multiple serrated blades (33); each serrated blade (33) is strip-shaped and radially distributed on the circumferential surface of the roller-type cutter holder (32), with serrated cutting parts on its outer edge, and its inner edge connected to the roller-type cutter holder (32) and parallel to the axis of the roller-type cutter holder (32); the secondary fine crushing mechanism housing (31) is provided with at least two fixed blades (34); the extension direction of the fixed blades (34) is also parallel to the axis of the roller-type cutter holder (32), and serrated cutting parts are also provided on its side facing the roller-type cutter holder (32); when the roller-type cutter holder (32) rotates, each serrated blade (33) cooperates with the fixed blades (34) to perform secondary cutting of waste plastic film to form fragments, and the serrated blades (33) also serve as blades to extract airflow; The top of the secondary fine crushing mechanism box (31) is provided with an inlet, and the waste plastic film after secondary cutting, along with the airflow, is discharged from the opening at the bottom of the secondary fine crushing mechanism box (31).

2. The waste plastic film cutting and crushing device according to claim 1, characterized in that: The radius of the disc cutter (12) is 400mm, and the rotation speed of the disc cutter drive motor (13) is not less than 1200r / min.

3. The waste plastic film cutting and crushing device according to claim 1, characterized in that: The cutting mechanism (10), the primary crushing mechanism (20), and the secondary fine crushing mechanism (30) are arranged sequentially from top to bottom.

4. The waste plastic film cutting and crushing device according to claim 1, characterized in that: The angle-adjustable discharge port mechanism (40) includes a fixed air duct (41) and an adjustable nozzle (42); the inlet at the top of the fixed air duct (41) is connected to the bottom opening of the secondary fine crushing mechanism box (31), and the bottom outlet is connected to the adjustable nozzle (42), which is used to discharge the crushed waste film along with the airflow obliquely upward.

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