Waste mulching film bale cutting and crushing device

Abstract

The invention discloses a waste mulching film cutting and breaking device which is used for cutting and breaking bundled waste mulching films and comprises a waste mulching film of a cutting mechanism, a waste mulching film of a primary breaking mechanism, a waste mulching film of a secondary fine breaking mechanism and a waste mulching film of an angle-adjustable discharge port mechanism which are sequentially connected. The waste mulching film of the bag cutting mechanism is in a funnel shape, and a plurality of cutter head cutting assemblies are arranged on the side wall of the bag cutting mechanism and used for cutting and packaging the oppositely-bundled waste mulching film. The waste mulching film of the primary crushing mechanism is used for primary cutting of the cut waste mulching film, the cut waste mulching film enters the waste mulching film of the secondary fine crushing mechanism for secondary cutting, and the waste mulching film of the secondary fine crushing mechanism serves as a fan. And the waste mulching film subjected to secondary cutting is blown out according to a preset angle through an angle-adjustable discharging opening mechanism. The waste mulching film bale cutting and crushing device can effectively solve the problems that a blade of an original device is heated and adheres to the blade, cutting is not smooth, and blockage is prone to occurring, and meanwhile disordered feeding of materials is achieved.

Description

Technical Field

[0001] The invention relates to the field of agricultural equipment, and in particular to a device for cutting and crushing waste mulch films. Background Art

[0002] With the rapid development of large-scale agricultural production, agricultural mechanization has taken an important position. Including the mechanization of agricultural planting, harvesting, green manure and post-production processing, as well as the mechanization of agricultural animal husbandry, the use of mulch in the field of agricultural planting has become increasingly common. The mulch mulching cultivation technology occupies an important strategic position in my country's agricultural production, and plays an important supporting role in utilizing limited water resources to develop dryland agriculture and ensure my country's food security. While these agricultural productions are developing rapidly, the amount of damaged and old mulch produced in the agricultural production environment is also increasing.

[0003] At present, the mechanized recycling technology of mulch has made certain progress. However, how to deal with the recycled mulch has become an important issue that needs to be solved urgently at this stage. The mechanically recycled mulch is mainly divided into two forms: bundled and loose. Compared with loose materials, bundled waste mulch has the characteristics of high compactness and convenient transportation, and has become the main development trend of mechanized mulch recycling technology. However, the mechanically recycled bundled waste mulch is mixed with a large amount of impurities such as straw and soil, which need to be pretreated before they can be used as resources. The crushing of bundled waste mulch is the primary link in the pretreatment. In order to ensure the subsequent pretreatment effect and the quality of the recycled products, the research on the mechanized collection and crushing technology of bundled waste mulch is particularly important.

[0004] In recent years, governments at all levels have increased their requirements and scrutiny on agricultural environmental protection. However, how to deal with waste mulch film as a resource after collection is indeed a difficult problem. However, the key to the resource treatment of waste mulch film is to break up the bundled waste mulch film and separate the film impurities, so there is an urgent need for an effective method to solve the problem of waste mulch film collection and crushing. This patent proposes a method for recycling bundled waste mulch film, which has a complex structure and large volume. Based on comprehensive consideration of the material characteristics of bundled waste mulch film and the advantages and disadvantages of existing film impurity crushing devices, a method of cutting the package first and then crushing is proposed.

[0005] The existing mulch film recycling technology has the following disadvantages:

[0006] 1. The blades of the original waste mulch crushing device are prone to heat and stickiness and cannot work continuously. The material feeding and discharging are not smooth and easy to be blocked during operation, and the materials cannot be discharged in a disorderly manner.

[0007] 2. The original waste mulch film crushing device can only crush the mulch film scattered materials to a certain extent, but it cannot completely and effectively crush and separate the mulch film scattered materials from the bundled waste mulch film materials recovered by the current domestic waste mulch film recycling machine.

[0008] 3. The original waste mulch film crushing device has a complex structure and high cost, which increases the cost of mulch film crushing machinery and resource utilization.

[0009] 4. The original waste 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 prior art, the present invention aims to solve the problems of blade heating, sticking and easy clogging in the original device. The design adopts a disc knife to cut the bundled film. The disc knife is arranged in five vertical and horizontal sections to cut the recycled materials in a disorderly manner, reducing the difficulty of the preliminary work.

[0011] To achieve the above objectives, the present invention provides a waste mulch film cutting and crushing device for cutting and crushing bundled waste mulch films, which comprises: a waste mulch film cutting mechanism, a primary crushing mechanism, a secondary fine crushing mechanism and an angle-adjustable discharge port mechanism that are connected in sequence; the waste mulch film cutting mechanism is funnel-shaped, and a plurality of cutter disc cutting assemblies are arranged on its side wall for cutting bundled waste mulch films; the waste mulch film of the primary crushing mechanism is used for performing the initial cutting of the waste mulch film after cutting, and the cut waste mulch film enters the waste mulch film of the secondary fine crushing mechanism for secondary cutting, and the waste mulch film of the secondary fine crushing mechanism also serves as a blower to blow out the waste mulch film after the secondary cutting at a predetermined angle through the angle-adjustable discharge port mechanism.

[0012] A further improvement of the present invention is that: the cutter disc cutting assembly includes: a cutting disc blade, a disc blade driving motor, and a disc blade protective plate; the disc blade driving motor and the cutting disc blade are transmission connected and installed on the side wall of the cutting mechanism, and the cutting disc blade extends from the strip gap of the side wall of the cutting mechanism into a feeding channel formed by the side wall of the cutting mechanism; the disc blade protective plate is installed on the outside of the side wall of the cutting mechanism to shield the part of the cutting disc blade outside the feeding channel.

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

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

[0015] A further improvement of the present invention is that the primary crushing mechanism waste film comprises a primary crushing mechanism box waste film, a primary crushing mechanism knife frame waste film, a primary crushing mechanism partition waste film and an adjustable blade waste film; the primary crushing mechanism box waste film is provided with an inlet at the top and an outlet at the bottom; the primary crushing mechanism knife frame waste film is arranged in a transverse direction; a plurality of plate-shaped primary crushing mechanism partition waste film are parallel to each other and arranged at intervals and are perpendicular to the axis direction of the primary crushing mechanism knife frame waste film; the adjustable blade waste film The old ground film is installed on the waste ground film of the primary crushing mechanism knife holder, and each adjustable blade waste ground film is located in the gap between the adjacent waste ground films of the primary crushing mechanism partition. When the waste ground film of the primary crushing mechanism knife holder rotates, each adjustable blade waste ground film is used to perform initial cutting on the waste ground film that falls on the top edge of the waste ground film of the primary crushing mechanism partition; the cut waste ground film falls through the gap between the waste ground films of the primary crushing mechanism partition, and falls into the waste ground film of the secondary fine crushing mechanism from the opening at the bottom of the waste ground film of the primary crushing mechanism box.

[0016] A further improvement of the present invention is that: the waste mulch of the secondary fine crushing mechanism comprises a waste mulch of the secondary fine crushing mechanism box, a waste mulch of a roller-type tool holder arranged in a transverse direction, and a plurality of sawtooth blades; each sawtooth blade is in a strip shape and radially distributed on the circumferential surface of the waste mulch of the roller-type tool holder, and a sawtooth cutting portion is arranged on its outer edge, and an inner edge thereof is connected to the waste mulch of the roller-type tool holder and is parallel to the axis of the waste mulch of the roller-type tool holder; the waste mulch of the secondary fine crushing mechanism box is provided with at least two fixed blades; the fixed The extension direction of the blade waste film is also parallel to the axis of the drum-type knife holder waste film, and a serrated cutting portion is also provided on the side facing the drum-type knife holder waste film; when the drum-type knife holder waste film rotates, each of the serrated blade waste film cooperates with the fixed blade waste film to perform secondary cutting on the waste film to form fragments, and the serrated blade waste film also serves as a blade to extract airflow; an inlet is provided on the top of the waste film of the secondary fine crushing mechanism box, and the waste film after secondary cutting is discharged together with the airflow from the opening at the bottom of the waste film of the secondary fine crushing mechanism box.

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

[0018] The advantages of the present invention are as follows:

[0019] (1) The bag cutting mechanism of the present invention drives the disc knife to cut the bundled film debris through the driving motor, effectively solving the problems of the original device such as blade heating and sticking, poor cutting, and easy clogging, while realizing the disorderly delivery of materials.

[0020] (2) The present invention uses a bag cutting mechanism to cut and pack large pieces of mulch film, and then cut and pack small pieces of mulch film into small pieces. The waste mulch film is crushed into small pieces by a primary crushing mechanism, and then enters a secondary fine crushing mechanism for secondary dust treatment. The recycled mulch film can be crushed evenly and effectively, and provide guarantee for subsequent classification and screening.

[0021] (3) The device has a simple structure and multiple functions, which reduces recycling costs. The first-level primary crushing mechanism rotates clockwise, and the second-level fine crushing mechanism rotates counterclockwise. They work in coordination with each other to change the blowing direction of the fine ground film after crushing. Under high-speed rotation, acceleration is generated toward the blowing port, which can effectively achieve continuous blowing.

[0022] (4) The fine ground film broken by the present invention is blown out and falls at different distances under the action of gravity due to its different mass. Combined with factors such as debris and the mass of the ground film itself, the ground film and debris of different degrees of breaking fall into different collecting hoppers. The sorted fine ground film can be directly utilized as a resource (oil refining, granulation, making plastic pallets, and making other plastic parts), effectively solving the problem of white pollution. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

[0025] Figure 3 is a schematic diagram of a bag cutting mechanism in the present invention;

[0026] Figure 4 A top view of the bag cutting mechanism in the present invention;

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

[0028] Figure 6 It is a schematic diagram of the primary crushing mechanism partition plate and the primary crushing mechanism blade holder in the present invention;

[0029] Figure 7 It is a three-dimensional view of the secondary fine crushing mechanism in the present invention;

[0030] Figure 8 A schematic diagram of a drum-type blade holder and a fixed blade in the present invention;

[0031] Fig. 9 It is a three-dimensional view of the angle-adjustable discharge port mechanism of the present invention. DETAILED DESCRIPTION

[0032] The following describes the embodiments of the present invention by specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0033] While some exemplary embodiments of the present invention have been described for the purpose of illustration, it should be understood that the present invention may be implemented in other ways not specifically shown in the drawings.

[0034] like Figure 1 , Figure 2 As shown, an embodiment of the present invention provides a waste mulch 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 bag cutting mechanism 10 is funnel-shaped, and its side wall is provided with a plurality of blade cutting assemblies 11, which are used to cut the bundled waste mulch film; the primary crushing mechanism 20 is used to perform the initial cutting of the waste mulch film after the cutting, and the cut waste mulch film enters the secondary fine crushing mechanism 30 for secondary cutting, and the secondary fine crushing mechanism 30 also serves as a blower, which blows the waste mulch film after the secondary cutting out at a predetermined angle through the angle-adjustable discharge port mechanism 40. The bag cutting mechanism 10, the primary crushing mechanism 20 and the secondary fine crushing mechanism 30 are arranged in sequence from top to bottom. Figure 2 As shown, Figure 2 The red arrow in the middle indicates the movement path of the waste mulch film, the green arrow indicates the rotation direction of the cutting disc knife 12, the blue arrow indicates the rotation direction of the primary crushing mechanism knife frame 22, and the brown arrow indicates the rotation direction of the drum knife frame 32.

[0036] like Figure 2 , Figure 3 , Figure 4As shown, the cutter disc cutting assembly 11 includes a bag cutting disc 12, a disc cutter driving motor 13, and a disc cutter protection plate 14; the disc cutter driving motor 13 and the bag cutting disc 12 are transmission connected and installed on the side wall of the bag cutting mechanism 10, and the bag cutting disc 12 extends from the gap of the side wall of the bag cutting mechanism 10 into a feeding channel 15 formed by the side wall of the bag cutting mechanism 10; the disc cutter protection plate 14 is installed on the outer side of the side wall of the bag cutting mechanism 10, and is used to cover the part of the bag cutting disc 12 located outside the feeding channel 15.

[0037] The rotating shaft of the cutting disc 12 is arranged in the horizontal direction, so that the cutting disc 12 can vertically cut the bundled waste ground film fed into the feeding channel 15 in the longitudinal direction. The diameter of the bundled waste ground film is: 600mm~800mm; the length is: 1600mm~2000mm. In order to adapt to the bundled waste ground film of this specification, the size of the feed port is designed to be length: 2100mm width: 900mm. In this embodiment, the cross-section of the cutting mechanism 10 is rectangular, which includes four side walls opposite to each other, and at least one set of disc cutting assemblies 11 is installed on each side wall. For any two opposite side walls, the disc cutting assemblies 11 thereon are arranged relatively. The radius of the cutting disc 12 is 400mm, and the rotation speed of the disc drive motor 13 is not less than 1200r / min.

[0038] Since debris in mechanized recycling of ground film is inevitably involved in the formation of bundled waste ground film, it must be cut by a bag cutting mechanism before entering the crushing process to cut the bundled waste ground film into small pieces. The primary crushing mechanism is guaranteed to be free of jams during crushing and to achieve continuous operation. At the same time, the cutting performance is comprehensively considered when designing the bag cutting mechanism. The bundled waste ground film is cut into five small pieces by three sets of opposing knife disc cutting assemblies 11, so that the materials can be placed in an unordered manner.

[0039] like Figure 2 , Figure 5 , Figure 6 As shown, the primary crushing mechanism 20 includes a primary crushing mechanism box 21, a primary crushing mechanism tool holder 22, a primary crushing mechanism partition 23 and an adjustable blade 24; the primary crushing mechanism box 21 is provided with an inlet at the top and an outlet at the bottom; the primary crushing mechanism tool holder 22 is arranged in the transverse direction; a plurality of plate-shaped primary crushing mechanism partitions 23 are parallel to each other and arranged at intervals and are perpendicular to the axial direction of the primary crushing mechanism tool holder 22; the adjustable blade 24 is installed on the primary crushing mechanism tool 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 blade holder 22 rotates, each adjustable blade 24 is used to perform the primary cutting of the waste mulch film that falls on the top edge of the primary crushing mechanism partition 23; the cut waste mulch 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 box 21. The primary crushing mechanism partition 23 is installed on the main shaft, and a pulley is connected to the end of the main shaft, which is connected to the drive motor through a belt to drive the primary crushing mechanism blade holder 22 to rotate.

[0041] The blades on the primary crushing mechanism blade holder 22 are of adjustable design, and each adjustable blade 24 is mounted on the primary crushing mechanism blade holder 22 through a detachable structure. The working environment of the primary crushing mechanism 20 is relatively harsh, and the blades are easily damaged due to foreign matter and other reasons. With the detachable design, when an adjustable blade is worn or damaged, it can be easily replaced, reducing the use cost and maintenance cost. In addition, the adjustable blades 24 can be combined to form a variety of arrangements, such as a spiral blade arrangement and a staggered blade arrangement, to achieve different crushing effects.

[0042] During the crushing process, the upper edge of the primary crushing mechanism partition 23 can carry uncut large pieces of waste mulch. After cutting, small pieces of waste mulch can fall from the gaps between the primary crushing mechanism partitions 23. In this process, the adjustable blade can also play a role of pushing downward.

[0043] like Figure 1 , Figure 7 , Figure 8 As shown, the secondary fine crushing mechanism 30 includes a secondary fine crushing mechanism box 31, a roller-type knife frame 32 arranged in the transverse direction, and a plurality of serrated blades 33; each serrated blade 33 is in a strip shape and radially distributed on the circumferential surface of the roller-type knife frame 32, and its outer edge is provided with a serrated cutting portion, and its inner edge is connected to the roller-type knife frame 32 and parallel to the axis of the roller-type knife frame 32; the secondary fine crushing mechanism box 31 is provided with at least two fixed blades 34; the extension direction of the fixed blade 34 is also parallel to the axis of the roller-type knife frame 32, and its side facing the roller-type knife frame 32 is also provided with a serrated cutting portion; when the roller-type knife frame 32 rotates, each serrated blade 33 cooperates with the fixed blade 34 to perform secondary cutting on the waste ground film to form fragments, and the serrated blade 33 also serves as a blade to extract airflow; an inlet is provided on the top of the secondary fine crushing mechanism box 31, and the waste ground film after secondary cutting is discharged from the opening at the bottom of the secondary fine crushing mechanism box 31 together with the airflow.

[0044] The cutting portion of the fixed blade 34 is adapted to the cutting portion of the serrated blade 33. When the fixed blade 34 and the serrated blade 33 are adjacent and coplanar, the serrated cutting portion of the fixed blade 34 and the serrated cutting portion of the serrated blade 33 are interlaced to form an interlocking structure. As the drum-type tool holder 32 rotates, when the serrated blade 33 passes the fixed blade 34, the cutting portions of the two perform secondary cutting on the waste mulch to form fragments.

[0045] In this embodiment, the number of the serrated blades 33 is 8. From the end surface of the drum-type blade holder 32, the serrated blades 33 are radially distributed, and the angle between two adjacent serrated blades 33 is 45°. The use of serrated blades can also reduce the risk of waste mulch accumulation and entanglement. The drum-type blade holder 32 and the serrated blades 33 are combined to form an impeller structure, so that the serrated blades 33 can generate airflow during high-speed rotation.

[0046] The residual film crushing device is only provided with an inlet at the top bag 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, enters from the inlet, and is discharged from the outlet. In this process, the airflow not only carries the waste film after the secondary cutting out, but also blows through the adjustable blades 24, the serrated blades 33, and the waste film being cut, taking away some of the heat and reducing the risk of heat and knife sticking.

[0047] In this embodiment, the cutter disc cutting assembly 11, the primary crushing mechanism 20 and the secondary fine crushing mechanism 30 crush the bundled waste ground film three times. The cutter disc cutting assembly 11 is used to cut the bundled waste ground film and cut the bundled waste ground film from the whole package into dispersed large pieces, so that the subsequent primary crushing mechanism 20 and the secondary fine crushing mechanism 30 can respectively use appropriate rotation speeds for cutting, so that the working power of each level of cutting mechanism is evenly distributed. The reasonable distribution of working power also makes the cutting amount of each level of cutting mechanism evenly distributed, reduces the heat generated by the cutting friction of the single-stage cutting structure, reduces the risk of heating, sticking and clogging, improves the overall cutting and crushing efficiency, and enables the bundled waste ground film to be placed in a disorderly manner, reducing the difficulty of using the waste ground film cutting and crushing device. In some specific embodiments, the primary crushing mechanism 20 adopts a low-speed and high-torque working mode, and the secondary fine crushing mechanism 30 adopts a high-speed working mode, so that the secondary fine crushing mechanism 30 can perform high-frequency cutting of the waste ground film and generate airflow of sufficient intensity. This reasonable working power distribution method can avoid excessive working power and avoid long-term high-power operating conditions that affect the life of the machine.

[0048] like Fig. 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 its bottom outlet is connected to the adjustable nozzle, and the adjustable nozzle 42 is used to discharge the waste ground film together with the airflow obliquely upward for subsequent air selection.

[0049] The waste mulch film cutting and crushing device of the present invention has a simple structure, is easy to manufacture, and has high economic value. It can effectively solve the problems of easy blockage during machine operation, and solve the problems of heating and sticking of the cutter during cutting. At the same time, it can realize the disorderly delivery of materials, ensure the stable operation of the machine and realize continuous operation. Through the detachable assembly cutting and bagging mechanism, the primary crusher and the secondary fine crushing mechanism and other mechanisms, the crushed mulch film, the mixed soil, the crushed straw and other materials can be blown out at high speed through the discharge port. According to the different masses of the debris, the crushed mulch film and the fine mulch film, the different masses are blown out at different distances under the action of gravity by utilizing their own characteristics. The crushed mulch film and the debris are collected through different collecting hoppers to achieve different resource utilization (oil refining, granulation, making plastic pallets, making other plastic parts, etc.) of the mulch film with different crushing degrees. It greatly promotes environmental protection, whether it is the resource utilization after recycling or the protection of the environment during the recycling process, it has been greatly improved.

[0050] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may 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 a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A device for cutting and crushing waste mulch film, used for cutting and crushing bundled waste mulch film, characterized in that include: A bag cutting mechanism (10), a primary crushing mechanism (20), a secondary fine crushing mechanism (30) and an angle-adjustable discharge port mechanism (40) are sequentially connected; the bag cutting mechanism (10) is funnel-shaped, and a plurality of knife disc cutting assemblies (11) are arranged on its side wall for cutting bundles of waste ground film; the primary crushing mechanism (20) is used for performing initial cutting on the waste ground film after the bag cutting, and the cut waste ground film enters the secondary fine crushing mechanism (30) for secondary cutting, and the secondary fine crushing mechanism (30) also serves as a blower to blow out the waste ground film after the secondary cutting at a predetermined angle through the angle-adjustable discharge port mechanism (40).

2. The waste mulch film cutting and crushing device according to claim 1 is characterized in that: The knife disc cutting assembly (11) comprises: a bag cutting disc knife (12), a knife disc driving motor (13), and a knife disc protection plate (14); the knife disc driving motor (13) and the knife disc (12) are drivingly connected and mounted on the side wall of the bag cutting mechanism (10); the knife disc (12) extends from a gap in the side wall of the bag cutting mechanism (10) into a material discharge channel (15) formed by the side wall of the bag cutting mechanism (10); the knife disc protection plate (14) is mounted on the outside of the side wall of the bag cutting mechanism (10) and is used to shield the portion of the knife disc (12) located outside the material discharge channel (15).

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

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

5. The waste mulch film cutting and crushing device according to claim 4 is characterized in that: The primary crushing mechanism (20) comprises a primary crushing mechanism box (21), a primary crushing mechanism blade frame (22), a primary crushing mechanism partition (23) and an adjustable blade (24); the primary crushing mechanism box (21) is provided with an inlet at the top and an outlet at the bottom; the primary crushing mechanism blade frame (22) is arranged in the transverse direction; a plurality of plate-shaped primary crushing mechanism partitions (23) are parallel to each other and arranged at intervals and are perpendicular to the axis direction of the primary crushing mechanism blade frame (22); the adjustable blade (24) is installed at The primary crushing mechanism blade holder (22) is provided with each adjustable blade (24) located in the gap between adjacent primary crushing mechanism partitions (23). When the primary crushing mechanism blade holder (22) rotates, each adjustable blade (24) is used to perform initial cutting on the waste ground film that falls on the top edge of the primary crushing mechanism partition (23); the cut waste ground 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).

6. The waste mulch film cutting and crushing device according to claim 4 is characterized in that: The secondary fine crushing mechanism (30) comprises a secondary fine crushing mechanism housing (31), a roller-type blade holder (32) arranged in a transverse direction, and a plurality of serrated blades (33); each serrated blade (33) is strip-shaped and radially distributed on the circumferential surface of the roller-type blade holder (32), and its outer edge is provided with a serrated cutting portion, and its inner edge is connected to the roller-type blade holder (32) and parallel to the axis of the roller-type blade holder (32); the secondary fine crushing mechanism housing (31) is provided with at least two fixed blades (34); the extension direction of the fixed blade (34) is also parallel to the axis of the roller-type blade holder (32), and the side thereof facing the roller-type blade holder (32) is also provided with a serrated cutting portion; when the roller-type blade holder (32) rotates, each of the serrated blades (33) cooperates with the fixed blade (34) to perform secondary cutting on the waste mulch to form fragments, and the serrated blades (33) also serve as blades to extract airflow; An inlet is arranged at the top of the secondary fine crushing mechanism housing (31), and the waste ground film after secondary cutting is discharged together with the airflow from the opening at the bottom of the secondary fine crushing mechanism housing (31).

7. The waste mulch film cutting and crushing device according to claim 6 is characterized by: The angle-adjustable discharge port mechanism (40) comprises 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 housing (31), and the bottom outlet is connected to the adjustable nozzle (42), and the adjustable nozzle (42) is used to discharge the crushed waste film together with the air flow obliquely upward.

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