A fractional membrane debris crushing and separating device

Abstract

The application discloses a hierarchical membrane sundry crushing and separating device, which comprises a residual membrane crushing device, 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 for primary cutting of waste residual membranes. The cut waste residual membranes enter the secondary fine crushing mechanism for secondary cutting. The secondary fine crushing mechanism is used as a fan. The secondary cut waste residual membranes are blown out through the angle-adjustable discharge port mechanism according to a predetermined angle. The components of the blown-out waste residual membranes include high-density sundries, coarse-grained residual membranes and fine-grained residual membranes. The sundry collecting device, the secondary receiving hopper and the tertiary receiving hopper of the sorting device receive and collect the corresponding components at the corresponding distances. The device can effectively collect and separate the crushed sundries and residual membranes to realize hierarchical treatment of resource utilization.

Description

Technical Field

[0001] This invention relates to the field of agricultural equipment, specifically to a graded membrane crushing and separation 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 vital supporting role in utilizing limited water resources to develop dryland agriculture and ensuring my country's food security. However, along with this rapid development of agricultural production, the amount of waste plastic film generated in the agricultural production environment is also increasing.

[0003] With the widespread application of plastic film mulching technology in agricultural production, the amount of residual plastic film in the soil has gradually increased with the continuous increase in the number of years and area covered by mulching. This residual film pollution has seriously threatened agricultural production and the natural environment. As a recyclable resource, the recycling and reuse of waste plastic film from machine harvesting has become an inevitable trend. The technology and equipment for the resource utilization of residual plastic film are key to completely solving the problem of "white pollution" and achieving sustainable agricultural development. The low resource utilization rate of recycled residual film is mainly due to the high impurity content of the recycled film, making it difficult to separate and lacking the basic conditions for resource utilization.

[0004] Currently, methods for recycling agricultural film mainly include manual recycling, mechanical recycling, and the use of biodegradable film. Manual recycling yields good results but is inefficient and labor-intensive. Biodegradable film degrades on its own in the field after use, eliminating the need for recycling, but its manufacturing process is complex, costly, and expensive. Furthermore, its degradation performance and impact on crops require further research, and it is not yet widely used. Mechanical recycling is capable of large-scale, high-efficiency film recovery and has become an effective method. However, mechanically recycled film contains a large amount of straw and soil impurities, making reuse difficult. Most of the recovered film is burned on-site or buried in wasteland, causing secondary pollution to the environment and soil. To promote the recycling and reuse of agricultural film residue, the technology for separating agricultural film residue from impurities is a crucial link in the process. To fundamentally address agricultural film residue pollution, it is essential to clean and remove impurities from the film and achieve resource utilization of the recycled residue.

[0005] Existing equipment is simple to operate, but generally suffers from problems such as low work efficiency, uneven film breaking, poor cutting rod and stone avoidance effect, poor tool durability, and poor operation smoothness.

[0006] Existing plastic film recycling technologies have the following drawbacks:

[0007] 1. Existing residual film recycling machinery can only collect and pile up the plastic film covering the soil, and cannot achieve the goal of resource utilization of the residual film.

[0008] 2. Existing residual film grading machinery utilizes the different suspension characteristics of residual film and impurities in water to separate them by washing. However, the washing process generates a large amount of wastewater. Improper wastewater treatment can cause large-scale secondary pollution to the environment and waste water resources to a great extent. The recycling and cleaning of waste plastic film has high requirements, which will significantly increase costs.

[0009] 3. The existing hot air melting and granulation technology can melt waste plastic film and plastic with the aid of hot air. This technology saves costs by avoiding crushing and improves the working environment. However, the plastic film will produce toxic gases during the melting process, and the recycling and granulation technology that is compatible with this technology is not perfect. It still needs to be continuously developed and coordinated.

[0010] 4. Modifying existing plastic film recycling machinery involves complex structures, high costs, and increases the cost of plastic film recycling machinery and resource utilization. Summary of the Invention

[0011] To address the aforementioned deficiencies and shortcomings of existing technologies, this invention aims to solve key steps in the mechanized resource utilization of waste plastic film recycling by adding a graded cutter holder, an adjustable discharge port mechanism, and a matching film grading, conveying, and separating device. This achieves film and impurity crushing during the mechanized recycling and resource utilization of waste plastic film. It also solves the problems of ineffective grading and utilization of crushed residual film and impurities, and the high cost and high construction cost of waste plastic film mechanized recycling and resource utilization devices.

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

[0013] The residual film crushing device includes 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 initial cutting of the waste residual film. The cut waste residual film enters the secondary fine crushing mechanism for secondary cutting. The secondary fine crushing mechanism also functions as a fan, which blows the secondary cut waste residual film out at a predetermined angle through the angle-adjustable discharge port mechanism.

[0014] The waste film blown out by the angle-adjustable discharge port mechanism includes high-density impurities, coarse-grained film residue, and fine-grained film residue. The soil collection device, secondary receiving hopper, and tertiary receiving hopper of the sorting device receive and collect the corresponding components at corresponding distances, and the corresponding conveying and collecting devices collect them.

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

[0016] A further improvement of the present invention is that: the primary crushing mechanism includes a primary crushing mechanism housing, a primary crushing mechanism cutter holder, a primary crushing mechanism partition, and adjustable blades; the primary crushing mechanism housing has an inlet at the top and an outlet at the bottom; the primary crushing mechanism cutter holder is arranged laterally; multiple plate-shaped primary crushing mechanism partitions are parallel to each other, spaced apart, and perpendicular to the axial direction of the primary crushing mechanism cutter holder; the adjustable blades are mounted on the primary crushing mechanism cutter holder, and each adjustable blade is located in the gap between adjacent primary crushing mechanism partitions; when the primary crushing mechanism cutter holder rotates, each adjustable blade is used to perform initial cutting on the waste film falling on the top edge of the primary crushing mechanism partition; the cut waste film falls through the gap between the primary crushing mechanism partitions and falls into the secondary fine crushing mechanism through the opening at the bottom of the primary crushing mechanism housing.

[0017] A further improvement of the present invention is that: the secondary fine crushing mechanism includes a secondary fine crushing mechanism housing, a roller-type cutter holder arranged laterally, and multiple serrated blades; each serrated blade is strip-shaped and radially distributed on the circumferential surface of the roller-type cutter holder, with serrated cutting portions on its outer edge, and its inner edge connected to the roller-type cutter holder and parallel to its axis; the secondary fine crushing mechanism housing is provided with at least two fixed blades; the extension direction of the fixed blades is also parallel to the axis of the roller-type cutter holder, and serrated cutting portions are also provided on their sides facing the roller-type cutter holder; when the roller-type cutter holder rotates, each serrated blade cooperates with the fixed blades to perform secondary cutting of the waste film into fragments, and the serrated blades also act as blades to extract airflow; the top of the secondary fine crushing mechanism housing is provided with an inlet, and the secondary-cut waste film along with the airflow is discharged from the opening at the bottom of the secondary fine crushing mechanism housing.

[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 the bottom outlet is connected to an adjustable nozzle, which is used to discharge the waste film along with the airflow obliquely upward.

[0019] A further improvement of the present invention is that the ratio between the inlet area of ​​the soil collection device, the three-stage receiving hopper and the two-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 collection 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 collection device.

[0022] The advantages of this invention are as follows: This invention has a simple structure, is easy to manufacture, and has high economic value. It achieves different crushing effects on waste plastic film through a detachable primary crushing mechanism and a secondary fine crushing mechanism. Simultaneously, it can blow out crushed residual film, soil, crushed straw, and other materials at high speed through an angle-adjustable discharge port mechanism. Based on the different masses of impurities, crushed residual film, and fine residual film, and utilizing their inherent characteristics under gravity, the distances they fall after being blown out naturally differ. This method effectively collects the crushed residual film and impurities through the discharge port, and collects them using a receiving hopper larger than the discharge port. This allows for the graded treatment of residual film at different crushing degrees for different resource utilization purposes. It greatly promotes environmental protection, significantly improving both post-recycling resource utilization and environmental protection during the recycling process. Attached Figure Description

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

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

[0025] Figure 3 This is a perspective view of the primary crushing mechanism in this invention;

[0026] Figure 4 This is a schematic diagram of the partition plate and the cutter holder of the primary crushing mechanism in this invention;

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

[0028] Figure 6 This is a schematic diagram of a roller-type tool holder and a fixed blade.

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

[0030] Figure 8 A top view of the conveying and collecting device;

[0031] Figure 9 This is a three-dimensional schematic diagram of the working process of the graded membrane impurity crushing and separation device 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 7 , Figure 9 As shown, an embodiment of the present invention provides a graded membrane impurity crushing and separation device, which includes: a residual membrane crushing device and an angle-adjustable discharge port mechanism 40. All components of the graded membrane impurity crushing and separation device of this embodiment are... Figure 1 This is reflected in the spatial relationship between the components, as follows: Figure 2 , Figure 9 As shown. During use, waste film residue (due to the impurities contained in the waste film after mechanized field recycling) is placed into the film residue crushing device's film impurity feed hopper 10, following the path shown. Figure 2 As shown, under the action of gravity, the primary crushing mechanism 20's primary crushing mechanism cutter holder 22 rotates, causing the adjustable blades 24 to push the waste film roll downwards and cut it. The film is then shredded by the primary crushing mechanism until it falls into the secondary fine crushing mechanism 30. The secondary fine crushing mechanism 30 further crushes the film and debris, and the counterclockwise high-speed rotation of the drum-type cutter holder 32 of the secondary fine crushing mechanism 30 blows the 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 for the initial cutting of waste residual film. The cut waste residual film enters the secondary fine crushing mechanism 30 for secondary cutting. The secondary fine crushing mechanism 30 also functions as a blower, blowing the secondary-cut waste residual film out through the angle-adjustable discharge port mechanism 40 at a predetermined angle. 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 sequentially from top to bottom. Figure 2 As shown, the red arrow indicates the movement path of the waste film, the brown arrow indicates the rotation direction of the cutter holder in the primary crushing mechanism 20, and the blue arrow indicates the rotation direction of the cutter 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 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 circumferential surface of the primary crushing mechanism cutter 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 cutter holder 22 rotates, each adjustable blade 24 is used to perform initial cutting on the waste film falling on the top edge of the primary crushing mechanism partition 23; the cut waste film falls through the gap between the primary crushing mechanism partitions 23 and 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 via a belt to drive the primary crushing mechanism cutter holder 22 to rotate.

[0038] 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.

[0039] Furthermore, adjustable blades can be selected according to the characteristics of materials with different properties. For example, different adjustable blades can be selected for effective crushing of mulch films of different thicknesses and hard plastics, such as plastic shells and plastic bottles.

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

[0041] like Figure 2 , Figure 5 , Figure 6As 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 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 film along with the airflow is discharged from the opening at the bottom of the secondary fine crushing mechanism housing 31.

[0042] 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 film to form fragments.

[0043] 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.

[0044] The residual film crushing device has an inlet only in the top film impurity feeding hopper 10 and an outlet in 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 away the waste residual film after secondary cutting, but also blows over the adjustable blades 24, the serrated blades 33, and the waste residual film being cut, carrying away some heat and reducing the risk of overheating and sticking to the blades.

[0045] In this embodiment, the primary crushing mechanism 20 and the secondary fine crushing mechanism 30 crush the waste film in two stages. Each stage can operate at an appropriate rotational speed, ensuring both stages operate at suitable power levels with even power distribution. 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. This allows the secondary fine crushing mechanism 30 to perform high-frequency cutting of the waste film and generate sufficiently strong airflow. This reasonable power distribution avoids excessive power consumption and prevents prolonged high-power operation from affecting machine lifespan.

[0046] like Figure 7 , Figure 8 , Figure 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 the bottom outlet is connected to an adjustable nozzle, which is used to discharge the waste film along with the airflow obliquely upward.

[0047] The waste film blown out by the angle-adjustable discharge port mechanism 40 consists of high-density debris, coarse-grained film, and fine-grained film. These components have different specific gravities and therefore different settling distances. High-density debris (straw, soil, small stones, and other field debris) is heavier than the film and is blown out a shorter distance, thus falling into the debris collection device 50. Coarse-grained film, normally crushed to the required size, is blown out through the discharge port; due to its light weight, it is blown out a longer distance and falls into the secondary receiving hopper 60. During the two cutting processes, some waste film is cut into even smaller fragments. These fragments are small and, as fine-grained film, have the longest settling distance, thus falling into the tertiary receiving hopper 70.

[0048] As the various components are blown out by the airflow, they will gradually disperse due to environmental influences (such as airflow disturbances). To ensure effective reception, the ratio between the inlet area of ​​the soil collection device 50, the three-stage receiving hopper 70, and the two-stage receiving hopper 60 and the outlet area of ​​the adjustable nozzle 42 is greater than 1.2. By using a larger area, the effective reception of the corresponding components can be ensured.

[0049] In this embodiment, the conveying and collecting device corresponding to the secondary receiving hopper 60 includes a secondary sorting and 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 and conveying mechanism 71 and a tertiary residual film collecting device 72. Both the secondary sorting and conveying mechanism 61 and the tertiary sorting and conveying mechanism 71 are conveyor belts, and a conveyor belt material centering baffle 80 is installed on the conveyor belt to gather and center the residual film falling into the conveyor belt for transport, preventing 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 blade holder, which facilitates blade replacement. The blade holder can be selected for crushing according to the characteristics of different membrane impurities and different materials, and it generates acceleration blowing, which has little environmental pollution and can effectively separate impurities and residual membranes of different sizes.

[0052] (2) This invention uses a primary crushing mechanism to cut the recycled waste plastic film into large pieces, followed by a secondary fine crushing mechanism for secondary dust treatment. This ensures uniform and effective pulverization of the recycled roll-shaped plastic film and provides a guarantee for subsequent grading and screening.

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

[0054] (4) This device has a simple structure and multiple functions. By blowing out at high speed, gravity classification is used, and factors such as the mass of the debris and residual film itself are combined to make the residual film and debris of different degrees fall into different collection hoppers. Then, they fall into the collection device through the conveying mechanism, so that the residual film of different sizes can be processed to different degrees. After processing, the resources can be reused.

[0055] 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 staged membrane debris crushing and separating device, characterized in that, The application relates to a residual film breaking device which comprises a film miscellaneous feeding hopper (10), a primary breaking mechanism (20), a secondary fine breaking mechanism (30) and an angle-adjustable discharging port mechanism (40) connected in sequence; the primary breaking mechanism (20) is used for primary cutting of waste residual films; the waste residual films after cutting enter the secondary fine breaking mechanism (30) for secondary cutting; the secondary fine breaking mechanism (30) is used as a fan; the waste residual films after secondary cutting are blown out through the angle-adjustable discharging port mechanism (40) according to a predetermined angle; The components of the waste residual films blown out by the angle-adjustable discharging port mechanism (40) include high-density sundries, coarse-grained residual films and fine-grained residual films; a sundry collecting device (50) of a sorting device, a secondary receiving hopper (60) and a tertiary receiving hopper (70) receive and collect corresponding components at corresponding distances respectively; and corresponding conveying and collecting devices are used for collecting; The primary breaking mechanism (20) comprises a primary breaking mechanism box (21), a primary breaking mechanism cutter holder (22), primary breaking mechanism partition plates (23) and adjustable blades (24); the primary breaking mechanism box (21) is provided with an inlet at the top and an outlet at the bottom; the primary breaking mechanism cutter holder (22) is arranged in the transverse direction; a plurality of plate-shaped primary breaking mechanism partition plates (23) are arranged in parallel and at intervals and are perpendicular to the axial direction of the primary breaking mechanism cutter holder (22); the adjustable blades (24) are detachably arranged on the primary breaking mechanism cutter holder (22), and each adjustable blade (24) is located in the gap between adjacent primary breaking mechanism partition plates (23); when the primary breaking mechanism cutter holder (22) rotates, each adjustable blade (24) is used for primary cutting of the waste residual films falling on the top edge of the primary breaking mechanism partition plates (23); the waste residual films after cutting fall through the gap between the primary breaking mechanism partition plates (23) and fall into the secondary fine breaking mechanism (30) from the opening at the bottom of the primary breaking mechanism box (21); The adjustable blades (24) can be combined into a helical blade arrangement or an interlaced blade arrangement. ​ The secondary fine crushing mechanism (30) comprises a secondary fine crushing mechanism box (31), a transversely arranged drum-type cutter holder (32), and a plurality of sawtooth blades (33); each sawtooth blade (33) is in a strip shape, and is distributed radially on the circumferential surface of the drum-type cutter holder (32), with a sawtooth-shaped cutting portion arranged at the outer edge thereof, and the inner edge thereof being connected with the drum-type cutter holder (32) and being parallel to the axis of the drum-type cutter holder (32); the secondary fine crushing mechanism box (31) is provided with at least two fixed blades (34); the extending direction of the fixed blade (34) is also parallel to the axis of the drum-type cutter holder (32), and the side edge thereof facing the drum-type cutter holder (32) is also provided with a sawtooth-shaped cutting portion; when the drum-type cutter holder (32) rotates, each sawtooth blade (33) cooperates with the fixed blade (34) to perform secondary cutting on the waste residual film to form fragments, and the drum-type cutter holder (32) and the sawtooth blade (33) are combined to form an impeller type structure, so that the sawtooth blade (33) can generate airflow during high-speed rotation; the top of the secondary fine crushing mechanism box (31) is provided with an inlet, 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.

2. A fractional membrane debris separating and isolating 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 sequentially arranged from top to bottom.

3. A fractional membrane debris separating and isolating device according to claim 1, wherein: The angle-adjustable discharge port mechanism (40) comprises a fixed air pipe (41) and an adjustable nozzle (42); the inlet at the top of the fixed air pipe (41) is connected with the opening at the bottom of the secondary fine crushing mechanism box (31), and the adjustable nozzle is connected with the outlet at the bottom of the fixed air pipe, and the adjustable nozzle (42) is used for discharging the waste residual film together with the airflow obliquely upward.

4. A fractional membrane debris separating and isolating device according to claim 3, wherein: The ratio between the inlet area of the miscellaneous soil collecting device (50), the third receiving hopper (70), and the second receiving hopper (60) and the outlet area of the adjustable nozzle (42) is greater than 1.

2.

5. The hierarchical film impurity crushing and separating device according to claim 1, characterized in that: The corresponding conveying and collecting device of the second receiving hopper (60) comprises a second sorting conveying mechanism (61) and a second residual film collecting device (62); The corresponding conveying and collecting device of the third receiving hopper (70) comprises a third sorting conveying mechanism (71) and a third residual film collecting device (72).

Images