Grading type membrane impurity crushing and separating device

Abstract

The invention discloses a grading type film impurity crushing and separating device, which comprises a residual film crushing device, which comprises a film impurity feeding hopper, a primary crushing mechanism, a secondary fine crushing mechanism and an angle-adjustable discharge hole mechanism which are connected in sequence; the primary crushing mechanism is used for primarily cutting the waste plastic film residues, the cut waste plastic film residues enter the secondary fine crushing mechanism for secondary cutting, the secondary fine crushing mechanism is also used as a fan, and the waste plastic film residues subjected to secondary cutting are blown out through the angle-adjustable discharge port mechanism according to a preset angle; the waste plastic film residues blown out by the angle-adjustable discharging port mechanism comprise high-density sundries, coarse-grained plastic film residues and fine-grained plastic film residues, and the mixed soil collecting device, the second-stage receiving hopper and the third-stage receiving hopper of the sorting device receive and collect the corresponding components at the corresponding distances correspondingly and are collected through the corresponding conveying and collecting devices. The device can effectively collect and separate crushed sundries and residual films so as to realize resource utilization and grading treatment.

Description

Technical Field

[0001] The invention relates to the field of agricultural equipment, and in particular to a graded film impurity crushing and separation device. Background Art

[0002] With the rapid development of large-scale agricultural production, the mechanization of agriculture has taken an important position. Including the mechanization of agricultural planting, harvesting, green manure and post-production processing, as well as the mechanized breeding 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] Since mulching cultivation technology has been widely used in agricultural production, with the continuous increase in the number of years and area of ​​mulching, the amount of mulch residue in the soil has gradually increased, and residual film pollution has seriously threatened agricultural production and the natural environment. At present, in the battle against residual film, the mechanization rate of residual film recovery has gradually increased. As a recyclable resource, the recycling and reuse of farmland residual film has become an inevitable trend. The resource utilization technology and equipment of farmland residual film are the key to completely solving the "white pollution" of residual film and achieving sustainable development of agricultural production. The resource utilization rate of recycled residual film is low. The key point is that the recycled residual film has a high impurity rate and is difficult to separate, and there is a lack of basic conditions for resource utilization.

[0004] The recycling and reuse of mulch film is one of the top priorities for the healthy and sustainable development of agriculture. At present, the recycling methods of mulch film are mainly divided into manual recycling, mechanical recycling and the use of degradable mulch film. Manual recycling of mulch film has good recycling effect, but low efficiency and high labor intensity; degradable mulch film can be degraded in the field after use, and no recycling is required, but the manufacturing process is complicated, the cost is high, and the price is expensive. The degradation performance and the impact on crops still need further research, and it has not yet been widely promoted and used; mechanical recycling is capable of large-scale and high-efficiency residual film recycling, and has become an effective means of residual film recycling. However, the residual film after mechanical recycling contains a large amount of impurities such as straw and soil, and the residual film is difficult to reuse. Most of the recovered residual film is burned on the spot or buried in wasteland, causing secondary pollution to the environment and soil. In order to promote the recycling and reuse of residual film in farmland, the separation technology of residual film and impurities in farmland is the key link to connect the recycling and reuse of mulch film. In order to fundamentally control the pollution of residual film in farmland, it is necessary to remove impurities and clean the residual film, and realize the resource utilization of recycled residual film.

[0005] In recent years, the requirements and inspections of agricultural environmental protection by governments at all levels have been increasing year by year. However, how to deal with the ground film collected on the land surface is indeed a difficult problem. Solving the problem of collecting and handling ground film properly can effectively save resources and protect the environment. In the recycling of residual film, the original machine can only complete the recycling of residual film, but cannot achieve recycling, crushing and grading. It is found that the existing equipment is simple to operate, and generally has problems such as low work efficiency, uneven film crushing, poor cutting rod stone avoidance effect, poor tool durability, and poor operation smoothness.

[0006] The existing mulch film recycling technology has the following disadvantages:

[0007] 1. The original residual film recycling machinery can only recycle and pile up the film covering the soil, but cannot achieve resource utilization of the residual film.

[0008] 2. The existing residual film classification machines all use the method of water washing and separation based on the different suspension characteristics of residual film and debris in water. However, the washing process will generate a large amount of sewage. If the sewage is not properly treated, it will cause large-scale secondary pollution to the environment and waste water resources to a great extent. The requirements for recycling and cleaning of residual old ground film are high, which will greatly increase the cost. In addition, in Xinjiang, where a large area of ​​film is covered, the water supply is insufficient to guarantee the water washing and separation of mechanically harvested residual film.

[0009] 3. The original hot air melting granulation technology can melt waste mulch and plastic with the aid of hot air. This technology saves costs by avoiding crushing and thus improves the working environment. However, during the melting process, since the mulch is made of plastic, toxic gases will be produced, and the recycled granulation technology that matches this technology is not perfect, it still needs continuous research and development and mutual cooperation.

[0010] 4. The original mulch film recycling machinery is modified, the structure is complex, the cost is high, and the cost of mulch film recycling machinery and resource utilization is increased. Summary of the invention

[0011] In view of the above defects and shortcomings of the prior art, the present invention aims to solve the key steps of mechanized resource utilization of the damaged and old ground film recovery, add a graded knife holder, an adjustable discharge port mechanism, and matching miscellaneous film graded conveying and separation equipment to achieve the broken film in the mechanized recovery and resource utilization of the damaged and old ground film. And solve the problem that the broken residual film and debris cannot be effectively graded and utilized, and the cost of the mechanized recovery and resource utilization equipment of the damaged and old ground film is high.

[0012] To achieve the above objectives, the present invention provides a graded film impurity crushing and separation device, which comprises:

[0013] The residual film crushing device comprises a film impurity feeding hopper, a primary crushing mechanism, a secondary fine crushing mechanism and an angle-adjustable discharge port mechanism connected in sequence; the primary crushing mechanism is used to perform the primary cutting of the waste residual film, and the cut waste residual film enters the secondary fine crushing mechanism for secondary cutting, and the secondary fine crushing mechanism also serves as a blower to blow the waste residual film after the secondary cutting out through the angle-adjustable discharge port mechanism at a predetermined angle;

[0014] The components of the waste residual film blown out by the angle-adjustable discharge port mechanism include high-density debris, coarse-grained residual film, and fine-grained residual film. The debris collecting device, the secondary receiving hopper, and the tertiary receiving hopper of the sorting device respectively receive and collect corresponding components at corresponding distances, and are collected by corresponding conveying and collecting devices.

[0015] A further improvement of the present invention is that the film impurity feeding hopper, the primary crushing mechanism and the secondary fine crushing mechanism of the residual film crushing device are arranged in sequence from top to bottom.

[0016] A further improvement of the present invention is that the primary crushing mechanism comprises a primary crushing mechanism box, a primary crushing mechanism tool holder, a primary crushing mechanism partition and an adjustable blade; the primary crushing mechanism box is provided with an inlet at the top and an outlet at the bottom; the primary crushing mechanism tool holder is arranged in the transverse direction; a plurality of plate-shaped primary crushing mechanism partitions are parallel to each other, arranged at intervals, and perpendicular to the axial direction of the primary crushing mechanism tool holder; the adjustable blade is installed on the primary crushing mechanism tool holder, and each adjustable blade is located in the gap between adjacent primary crushing mechanism partitions, and when the primary crushing mechanism tool holder rotates, each adjustable blade is used to perform initial cutting on the waste residual film falling on the top edge of the primary crushing mechanism partition; the cut waste residual film falls through the gap between the primary crushing mechanism partitions, and falls into the secondary fine crushing mechanism from the opening at the bottom of the primary crushing mechanism box.

[0017] A further improvement of the present invention lies in that: the secondary fine crushing mechanism comprises a secondary fine crushing mechanism box, a roller-type tool holder arranged in the transverse direction and a plurality of serrated blades; each serrated blade is in the shape of a strip and radially distributed on the circumferential surface of the roller-type tool holder, and a serrated cutting portion is arranged on its outer edge, and a serrated cutting portion is arranged on its inner edge which is connected to the roller-type tool holder and is parallel to the axis of the roller-type tool holder; the secondary fine crushing mechanism box is provided with at least two fixed blades; the extension direction of the fixed blade is also parallel to the axis of the roller-type tool holder, and a serrated cutting portion is also arranged on its side facing the roller-type tool holder; when the roller tool holder rotates, each of the serrated blades cooperates with the fixed blade to perform secondary cutting on the waste residual film to form fragments, and the serrated blades also serve as blades to extract airflow; an inlet is arranged on the top of the secondary fine crushing mechanism box, and the waste residual film after the secondary cutting is discharged from the opening at the bottom of the secondary fine crushing mechanism box together with the airflow.

[0018] A further improvement of the present invention is that the angle-adjustable discharge port mechanism includes a fixed air duct and an adjustable nozzle; the inlet at the top of the fixed air duct is connected to the bottom opening of the secondary fine crushing mechanism box, and its bottom outlet is connected to the adjustable nozzle, which is used to discharge the waste residual film together with the airflow obliquely upward.

[0019] A further improvement of the present invention is that the ratio between the inlet area of ​​the dirt collecting device, the third-stage receiving hopper and the second-stage receiving hopper and the outlet area of ​​the adjustable nozzle is greater than 1.2.

[0020] A further improvement of the present invention is that: the conveying and collecting device corresponding to the secondary receiving hopper includes a secondary sorting and conveying mechanism and a secondary residual film collecting device;

[0021] The conveying and collecting device corresponding to the three-stage receiving hopper includes a three-stage sorting and conveying mechanism and a three-stage residual film collecting device.

[0022] The advantages of the present invention are as follows: the present invention has a simple structure, is easy to manufacture, and has high economic value. It can achieve different waste film crushing effects through the construction of a detachable assembly primary crushing mechanism and a secondary fine crushing mechanism. At the same time, the crushed residual film, soil, crushed straw and other materials can be blown out at high speed through an angle-adjustable discharge port mechanism. According to the different masses of debris, crushed residual film, and fine residual film, and by utilizing their own characteristics under the action of gravity, the distances at which they are blown out are naturally different due to their different masses. Through this method, the crushed residual film and debris are blown out through the discharge port, and the blown residual film and debris are collected according to the characteristic that the receiving hopper is larger than the discharge port. The crushed debris and residual film can be effectively collected to achieve different resource utilization and graded treatment of residual films with different crushing degrees. It has greatly promoted environmental protection, and both the utilization of resources after recycling and the protection of the environment during the recycling process have been greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the hierarchical membrane impurity crushing and separation device of the present invention;

[0024] Figure 2 It is a schematic diagram of the residual film crushing device and crushing route in the present invention;

[0025] Figure 3 It is a three-dimensional diagram of the primary crushing mechanism in the present invention;

[0026] Figure 4 It is a schematic diagram of the primary crushing mechanism partition plate and the primary crushing mechanism tool holder in the present invention;

[0027] Figure 5 It is a three-dimensional view of the secondary fine crushing mechanism;

[0028] Figure 6 A schematic diagram of a drum-type blade holder and a fixed blade;

[0029] Figure 7 It is a schematic diagram of the working process of the hierarchical membrane impurity crushing and separation device of the present invention;

[0030] Figure 8 It is a top view of the conveying and collecting device;

[0031] Fig. 9 It is a three-dimensional schematic diagram of the working process of the graded membrane impurity crushing and separation device 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 7 , Fig. 9 As shown, an embodiment of the present invention provides a graded film impurity crushing and separation device, which includes: a residual film crushing device and an angle-adjustable discharge port mechanism 40. The various components of the graded film impurity crushing and separation device of this embodiment are Figure 1 The spatial relationship of each component is shown in Figure 2 , Fig. 9 During use, waste film residues (waste film residues containing debris after mechanized recycling in the field) are placed into the film debris feeding hopper 10 of the film residue crushing device, and the path is as follows: Figure 2 As shown, under the action of gravity, the primary crushing mechanism blade holder 22 of the primary crushing mechanism 20 rotates, so that the adjustable blade 24 pushes the waste film roll downward and cuts it, and it is shredded by the primary crushing mechanism until it falls into the secondary fine crushing mechanism 30. The secondary fine crushing mechanism 30 crushes the residual film and debris, and the drum-type blade holder 32 of the secondary fine crushing mechanism 30 rotates counterclockwise at high speed to blow the residual film and debris out through the discharge port. Specifically:

[0035] The residual film crushing device includes a film impurity feeding hopper 10, a primary crushing mechanism 20, a secondary fine crushing mechanism 30 and an angle-adjustable discharge port mechanism 40 connected in sequence; the primary crushing mechanism 20 is used to perform the initial cutting of the waste residual film, and the cut waste residual 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 the waste residual film after the secondary cutting out at a predetermined angle through the angle-adjustable discharge port mechanism 40. The film impurity feeding hopper 10, the primary crushing mechanism 20 and the secondary fine crushing mechanism 30 of the residual film crushing device are arranged in sequence from top to bottom. Figure 2 As shown, the red arrow indicates the movement path of the waste residual film, the brown arrow indicates the rotation direction of the knife holder in the primary crushing mechanism 20, and the blue arrow indicates the rotation direction of the knife holder in the secondary fine crushing mechanism 30.

[0036] like Figure 2 , Figure 3 , Figure 4 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 circumferential surface of the primary crushing mechanism tool holder 22, and each adjustable blade 24 is located in the gap between adjacent primary crushing mechanism partitions 23.

[0037] When the primary crushing mechanism blade holder 22 rotates, each adjustable blade 24 is used to perform the primary cutting of the waste film residues that fall on the top edge of the primary crushing mechanism partition 23; the cut waste film residues fall through the gaps between the primary crushing mechanism partitions 23 and fall into the secondary fine crushing mechanism 30 from 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 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.

[0038] 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.

[0039] In addition, for materials of different properties, corresponding adjustable blades can be selected according to the characteristics of the materials. For example, for ground films of different thicknesses, hard plastics, such as plastic shells, plastic bottles and other products, different adjustable blades can be selected for effective crushing.

[0040] During the crushing process, the upper edge of the primary crushing mechanism partition 23 can carry large pieces of uncut waste film residues. After cutting, small pieces of waste film residues 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. The primary crushing mechanism partition 23 can also prevent large pieces of uncut waste film residues from falling into the secondary fine crushing mechanism 30.

[0041] like Figure 2 , Figure 5 , Figure 6 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 residual 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 residual film after secondary cutting is discharged from the opening at the bottom of the secondary fine crushing mechanism box 31 together with the airflow.

[0042] 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 residual film to form fragments.

[0043] 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.

[0044] The residual film crushing device is only provided with an inlet at the top film impurity feeding hopper 10, and an outlet is provided 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 residual film after the secondary cutting out, but also blows through the adjustable blades 24, the serrated blades 33, and the waste residual film being cut, taking away part of the heat and reducing the risk of heat and blade sticking.

[0045] In this embodiment, the primary crushing mechanism 20 and the secondary fine crushing mechanism 30 crush the waste residual film twice, and the two-stage crushing mechanism can respectively use appropriate rotation speeds for cutting, so that the two-stage crushing mechanism can use appropriate working power for cutting, and the working power of the two is evenly distributed. 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 on the waste residual film and generate airflow of sufficient intensity. This reasonable working power distribution method can avoid excessive working power and avoid long-term high-power working conditions that affect the life of the machine.

[0046] like Figure 7 , Figure 8 , Fig. 9 As 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 residual film together with the air flow obliquely upward.

[0047] The components of the waste film residue blown out by the angle-adjustable discharge port mechanism 40 include high-density debris, coarse-grained residual film, and fine-grained residual film. The above components have different specific gravities and therefore have different settling distances. Since high-density debris (field debris such as straw, soil, and pebbles) is heavier than the residual film and has a short blowing distance, it falls into the debris collection device 50. The coarse-grained residual film of the normal crushing size is blown out through the discharge port, and due to its light weight and long blowing distance, it falls into the secondary receiving hopper 60; during the two cutting processes, part of the waste film residue is cut into smaller fragments. These fragments have a small mass and, as fine-grained residual film, have the largest settling distance, so they fall into the tertiary receiving hopper 70.

[0048] As the above-mentioned various components are blown out by the airflow, they will be gradually dispersed due to the influence of the environment (such as airflow disturbance). In order to ensure effective reception, the ratio between the inlet area of ​​the dirt collecting device 50, the third-level receiving hopper 70 and the second-level receiving hopper 60 and the outlet area of ​​the adjustable nozzle 42 is greater than 1.2. By adopting a larger area, it is possible to ensure effective reception of the corresponding components.

[0049] In this embodiment, the conveying and collecting device corresponding to the secondary receiving hopper 60 includes a secondary sorting conveying mechanism 61 and a secondary residual film collecting device 62; the conveying and collecting device corresponding to the tertiary receiving hopper 70 includes a tertiary sorting conveying mechanism 71 and a tertiary residual film collecting device 72. Both the secondary sorting conveying mechanism 61 and the tertiary sorting conveying mechanism 71 are conveyor belts, and a conveyor belt material centering baffle 80 is installed on the conveyor belt to gather the residual film falling into the conveyor belt and transport it in the center of the conveyor belt, so as to prevent the residual film from falling out of the conveyor belt during the conveying process.

[0050] The device of the present invention has the following characteristics:

[0051] (1) The present invention has a detachable knife holder, which is convenient for knife replacement. The knife holder can be selected for crushing according to the characteristics of different film impurities and different materials, and the accelerated blowing is generated, which has little pollution to the environment and can effectively separate impurities and residual films of different sizes.

[0052] (2) The present invention uses a primary crushing mechanism to cut the recycled waste mulch into large pieces, and then uses a secondary fine crushing mechanism to perform secondary dust treatment. The recycled roll mulch can be crushed evenly and effectively, and provide guarantee for subsequent grading and screening.

[0053] (3) The discharging port of this design is angle-adjustable. In order to better collect the crushed ground films with different contents of impurities, this design can also be adjusted in combination with the spatial position of the conveyor and the receiving device.

[0054] (4) The device has a simple structure and multiple functions. Through high-speed blowing and gravity classification, combined with factors such as the quality of debris and residual film, the residual film and debris of different degrees after crushing will fall into different receiving hoppers, and then fall into the receiving device through the conveying mechanism, so that the residual film of different sizes will be processed to different degrees, and the resources will be reused after processing.

[0055] 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 graded membrane impurity crushing and separation device, characterized in that include: The residual film crushing device comprises a film impurity feeding hopper (10), a primary crushing mechanism (20), a secondary fine crushing mechanism (30) and an angle-adjustable discharge port mechanism (40) which are connected in sequence; the primary crushing mechanism (20) is used to perform primary cutting of the waste residual film, and the cut waste residual 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 the waste residual film after the secondary cutting out at a predetermined angle through the angle-adjustable discharge port mechanism (40); The components of the waste film residue blown out by the angle-adjustable discharge port mechanism (40) include high-density debris, coarse-grained film residue, and fine-grained film residue. The debris collecting device (50), the secondary receiving hopper (60), and the tertiary receiving hopper (70) of the sorting device receive and collect corresponding components at corresponding distances, and are collected by corresponding conveying and collecting devices.

2. A hierarchical membrane impurity crushing and separation device according to claim 1, characterized in that: The film impurity feeding hopper (10), the primary crushing mechanism (20) and the secondary fine crushing mechanism (30) of the residual film crushing device are arranged in sequence from top to bottom.

3. A hierarchical membrane impurity crushing and separation device according to claim 2, 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 film residues that fall on the top edge of the primary crushing mechanism partition (23); the cut waste film residues fall through the gap between the primary crushing mechanism partitions (23) and fall into the secondary fine crushing mechanism (30) from the opening at the bottom of the primary crushing mechanism housing (21).

4. A hierarchical membrane impurity crushing and separation device according to claim 2, 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 its side 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 film 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 film residue after secondary cutting is discharged together with the air flow from the opening at the bottom of the secondary fine crushing mechanism housing (31).

5. A hierarchical membrane impurity crushing and separation device according to claim 4, characterized in that: 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 box (31), and the bottom outlet is connected to the adjustable nozzle, and the adjustable nozzle (42) is used to discharge the waste residual film together with the air flow obliquely upward.

6. A hierarchical membrane impurity crushing and separation device according to claim 5, characterized in that: The ratio between the inlet area of ​​the debris collecting device (50), the third-stage receiving hopper (70) and the second-stage receiving hopper (60) and the outlet area of ​​the adjustable nozzle (42) is greater than 1.

2.

7. The hierarchical membrane impurity crushing and separation device according to claim 1, characterized in that: The conveying and collecting device corresponding to the secondary receiving hopper (60) comprises a secondary sorting and conveying mechanism (61) and a secondary residual film collecting device (62); The conveying and collecting device corresponding to the three-stage receiving hopper (70) comprises a three-stage sorting and conveying mechanism (71) and a three-stage residual film collecting device (72).

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