Multi-physics-field-coordinated waterless decontamination and purification equipment for waste mulching film and use method

Abstract

The invention discloses a multi-physical-field synergistic waterless waste mulching film decontamination and purification device and a use method, and relates to the field of agricultural waste mulching film decontamination and purification, the multi-physical-field synergistic waterless waste mulching film decontamination and purification device comprises a screening outer cylinder, an impurity discharge port is formed in the bottom of the screening outer cylinder, and the impurity discharge port is used for being connected with a dust removal device; the screening inner barrel is arranged in the screening outer barrel, a gap between the side wall of the screening inner barrel and the side wall of the screening outer barrel forms a separation interlayer, a plurality of screening holes are formed in the screening inner barrel, and the hole diameter of the screening holes is smaller than the diameter of a mulching film to be screened and larger than the diameter of fiber impurities; and the material guide pipe is communicated with the screening inner cylinder, and the material guide pipe is arranged to be in a volute type and used for being connected with an air supply device. The fiber impurities and the mulching film to be screened can be separated by means of airflow formed by the air supply device and the gravity of the fiber impurities, and the problems that in the process that the waste mulching film is primarily separated, crushed and then cleaned, the water consumption is large, the separation and purification efficiency is low, and the separation effect is poor are solved.

Description

Technical Field

[0001] The present invention relates to the field of decontamination and purification of agricultural waste mulch films, and in particular to a multi-physical field coordinated waste mulch film waterless decontamination and purification device and a use method thereof. Background Art

[0002] Traditional agricultural waste mulch films have always been difficult to separate and purify due to their complex composition and high impurity content, and difficult to achieve green and high-value recycling. At present, the traditional waste mulch film decontamination and purification technology at home and abroad mainly separates and crushes the waste mulch films and then washes them with water. Roller friction is used during washing to separate the film and impurities such as soil and straw through different buoyancy. The waste mulch films are recycled after sedimentation and filtration in the sewage circulation pool.

[0003] In the process of cleaning the waste mulch after preliminary separation and crushing, a large amount of water is needed for multiple cleanings. Usually, the water consumption for treating each ton of waste mulch will exceed 50 tons, resulting in a large waste of water resources. In addition, for the waste mulch that has been initially separated and crushed, the density of the mixture of mulch and fine fibers to be screened is lower than the density of water, and the particle size of fine fibers is usually smaller than the diameter of the mulch. After cleaning, the water mixed with sludge or fine fibers still adheres to the surface of the mulch, resulting in some soil and fine fibers remaining on the surface of the mulch after drying. After cleaning, the impurity rate of the mulch is still more than 10%, the separation and purification efficiency is low, and the separation effect is poor. Summary of the invention

[0004] The present application provides a multi-physical field coordinated waste land film waterless decontamination and purification device and a method of use, which can solve the technical problems existing in the prior art of high water consumption, low separation and purification efficiency and poor separation effect in the process of initially separating and crushing the waste land film and then cleaning it.

[0005] In a first aspect, an embodiment of the present application provides a multi-physical field coordinated waste land film waterless decontamination purification device, which includes:

[0006] A screening outer cylinder, wherein an impurity discharge port is provided at the bottom of the screening outer cylinder, and the impurity discharge port is used to connect to a dust removal device;

[0007] A screening inner cylinder, wherein the screening inner cylinder is arranged inside the screening outer cylinder, a gap between the side wall of the screening inner cylinder and the side wall of the screening outer cylinder forms a separation interlayer, and a plurality of screening holes are arranged on the screening inner cylinder, and the aperture of the screening holes is smaller than the diameter of the ground film to be screened and larger than the diameter of the fiber impurities;

[0008] And, a material guide pipe, the material guide pipe is communicated with the screening inner cylinder, the material guide pipe is configured as a volute type and is used to connect an air supply device.

[0009] By adopting the above technical scheme, when the waste mulch mixed with the mulch to be screened and the fiber impurities are screened, the waste mulch is blown into the screening inner cylinder by the airflow of the air supply device through the guide pipe. The guide pipe adopts a volute type setting. After the guide pipe is connected with the air supply device, the airflow pushes the waste mulch along the guide pipe into the screening inner cylinder, and the airflow in the guide pipe can blow the waste mulch away in the screening inner cylinder; at the same time, because the guide pipe is a volute type setting, the airflow drives the waste mulch to spirally fall along the side wall of the screening inner cylinder in the screening inner cylinder. During the falling process, the aperture of the screening hole on the screening inner cylinder is smaller than the mulch to be screened in the waste mulch and larger than the fiber impurities. Therefore, the mulch to be screened in the waste mulch is blocked by the side wall of the screening inner cylinder and remains in the screening inner cylinder. The fiber impurities with smaller particle size in the waste mulch are affected by the centrifugal force during the spiral falling process and pass through the screening hole into the separation interlayer, and fall naturally under the action of their own gravity, and then enter the dust removal device through the impurity discharge port. No water resources are needed during the entire separation process. The physical field of the airflow formed by the volute-type material guide pipe, the gravity of the fiber impurities themselves, and the particle size difference between the fiber impurities and the film to be screened can be used to screen the waste film and the fiber impurities. This solves the problems of high water consumption, low separation and purification efficiency, and poor separation effect in the process of initially separating and crushing the waste film and then washing it.

[0010] In combination with the first aspect, in one embodiment, a multi-physical field coordinated waste land film waterless decontamination purification device further includes:

[0011] A fine screening device is arranged in the screening inner cylinder and is used to assist the screening inner cylinder in performing synchronous screening.

[0012] By adopting the above technical solution, the screening efficiency of the waste ground film close to the axis direction of the screening inner cylinder can be improved.

[0013] In combination with the first aspect, in one embodiment, the fine screen device includes:

[0014] A fine screen cylinder, wherein the fine screen cylinder is arranged in the screening inner cylinder, the discharge port of the fine screen cylinder extends to the outside of the screening outer cylinder, and there is a gap between the side wall of the fine screen cylinder and the side wall of the screening inner cylinder, the material guide pipe extends into the gap between the fine screen cylinder and the screening inner cylinder, and a plurality of fine screen holes are provided on the fine screen cylinder, the aperture of the fine screen holes is smaller than the diameter of the ground film to be screened and larger than the diameter of the fiber impurities.

[0015] By adopting the above technical solution, when the waste ground film falls, the airflow blows along the volute-type guide pipe to form a spiral wind field between the fine screen cylinder and the screening inner cylinder. At the same time, since there are multiple fine screen holes on the side wall of the fine screen cylinder, part of the airflow passes through the fine screen holes and flows out along the discharge port of the fine screen cylinder to form a negative pressure toward the inside of the fine screen cylinder. Therefore, the outer circle fiber impurities close to the screening inner cylinder enter the separation interlayer under the action of centrifugal force, and the fiber impurities close to the inner circle of the fine screen cylinder enter the fine screen cylinder under the action of negative pressure and are discharged from the outside of the screening outer cylinder along the discharge port of the fine screen cylinder, further improving the screening efficiency.

[0016] In combination with the first aspect, in one embodiment, the fine screen device further includes:

[0017] A cleaning brush, wherein the cleaning brush is arranged on the side wall of the fine screen cylinder, and the length of the cleaning brush is adapted to the length of the fine screen holes opened on the side wall of the fine screen cylinder;

[0018] And, a first motor, which is arranged in the screening inner cylinder and is connected to the cleaning brush and drives the cleaning brush to rotate along the circumferential direction of the fine screen cylinder.

[0019] By adopting the above technical solution, turning on the first motor can drive the cleaning brush to make a circular motion along the side wall of the fine screen drum. During the rotation of the cleaning brush, the ground film to be screened adsorbed on the side wall of the fine screen drum can be swept off, thereby reducing the possibility of the ground film to be screened clogging the fine screen drum, and further improving the screening efficiency.

[0020] In combination with the first aspect, in one embodiment, a multi-physical field coordinated waste land film waterless decontamination purification device further includes:

[0021] A compression device is connected to the discharge port of the screening inner cylinder and is used to compress the screened ground film.

[0022] By adopting the technical solution, the discharge of the screened ground film is facilitated, and the possibility of the screened ground film being scattered around during discharge due to its relatively thinness is reduced.

[0023] In combination with the first aspect, in one embodiment, the compression device includes:

[0024] A compression cylinder, the top of which is connected to the screening inner cylinder;

[0025] A compression auger, wherein the compression auger is disposed in the compression cylinder;

[0026] And, a second motor, which is arranged on the compression cylinder and is used to drive the compression auger to rotate.

[0027] By adopting the above technical solution, the second motor can be turned on to make the compression auger rotate in the compression cylinder and compress the screened ground film that falls into the compression cylinder. A discharge port is provided at the bottom of the compression cylinder, and the screened ground film is continuously collected and compressed under the rotation of the compression auger, and finally a compact and clean ground film block is formed and discharged through the discharge port of the compression cylinder, which is easy for subsequent packaging and processing, improves processing efficiency, and saves storage space.

[0028] In combination with the first aspect, in one embodiment, the compression cylinder is configured to be conical, and the cross-sectional area of ​​the compression cylinder gradually decreases from an end close to the screening inner cylinder toward an end away from the screening inner cylinder.

[0029] By adopting the above technical solution, the assisted compression auger can gather the screened ground film in the compression cylinder, making it easier for the compression auger to compress the screened ground film, thereby improving the compression efficiency and making it more convenient to use.

[0030] In a second aspect, the present application provides a method for using a multi-physical field coordinated waste mulch film waterless decontamination and purification device, specifically comprising:

[0031] Connecting the material guide pipe with the air supply device, and connecting the impurity discharge port with the dust removal device;

[0032] The air supply device is turned on, and the ground film to be screened enters the screening inner cylinder from the material guide pipe along with the air flow, and spirally falls along the inner wall of the screening inner cylinder for screening.

[0033] By adopting the above technical scheme, a screening inner cylinder is added inside the screening outer cylinder, and the guide pipe is connected with the air supply device. The waste film can be sent into the screening inner cylinder by turning on the air supply device. The waste film enters the screening inner cylinder with the volute-type guide pipe and can fall along the inner wall of the screening inner cylinder in a vortex shape. The airflow can first blow away the film to be screened and the fiber impurities, and the fiber impurities in the waste film with a particle size smaller than the film to be screened can pass through the screening holes on the screening inner cylinder into the separation interlayer under the influence of centrifugal force during the rotating and falling process, and then fall under the action of their own gravity, and enter the dust removal device through the impurity discharge port at the bottom of the screening outer cylinder. There is no need to use water resources. The fiber impurities and the film to be screened can be separated by the airflow formed by the air supply device and the self-gravity of the fiber impurities, which solves the problems of high water consumption, low separation and purification efficiency and poor separation effect in the process of initially separating and crushing the waste film and then cleaning it.

[0034] In conjunction with the second aspect, in one embodiment, a method for using a multi-physical field coordinated waste land film waterless decontamination purification device further includes:

[0035] Before starting the air supply device, the fine screen device is installed in the screening inner cylinder;

[0036] The air supply device and the first motor are turned on at the same time to screen the ground film to be screened in the screening inner cylinder.

[0037] By adopting the above technical solution, the auxiliary screening inner cylinder is used for screening, thereby further improving the screening efficiency.

[0038] In conjunction with the second aspect, in one embodiment, a method for using a multi-physical field coordinated waste land film waterless decontamination purification device further includes:

[0039] Before starting the air supply device, the compression device is installed at the outlet of the screening inner cylinder;

[0040] Turn on the air supply device and the second motor at the same time;

[0041] The compression auger compresses and discharges the screened ground film.

[0042] By adopting the technical solution, the discharge of the screened ground film is facilitated, and the possibility of the screened ground film being scattered around during discharge due to its relatively thinness is reduced.

[0043] The beneficial effects brought by the technical solution provided in the embodiments of the present application include:

[0044] By adding a screening inner cylinder inside the screening outer cylinder and connecting the guide pipe with the air supply device, the waste film can be sent into the screening inner cylinder by turning on the air supply device. The waste film enters the screening inner cylinder with the volute type guide pipe and can fall along the inner wall of the screening inner cylinder in a vortex shape. The airflow can first blow away the film to be screened and the fiber impurities. In addition, the fiber impurities in the waste film with a particle size smaller than that of the film to be screened can pass through the screening holes on the screening inner cylinder into the separation interlayer under the influence of centrifugal force during the rotating and falling process, and then fall under the action of their own gravity, and enter the dust removal device through the impurity discharge port at the bottom of the screening outer cylinder. There is no need to use water resources. The fiber impurities and the film to be screened can be separated by the airflow formed by the air supply device and the self-gravity of the fiber impurities, which solves the problems of high water consumption, low separation and purification efficiency and poor separation effect in the process of initially separating and crushing the waste film and then cleaning it. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0046] Figure 1 This is an overall structural diagram of a multi-physical field coordinated waste ground film waterless decontamination purification device in this application;

[0047] In the figure: 1. Screening outer cylinder; 11. Material guide pipe; 12. Impurity discharge port; 2. Screening inner cylinder; 21. Separation interlayer; 3. Fine screen cylinder; 31. Cleaning brush; 32. First motor; 4. Compression cylinder; 41. Compression auger; 42. Second motor. DETAILED DESCRIPTION

[0048] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0049] The embodiments of the present application provide a multi-physical field coordinated waterless decontamination and purification method and equipment for waste land film, which can solve the problems of high water consumption, low separation and purification efficiency and poor separation effect in the process of initially separating and crushing the waste land film and then cleaning it.

[0050] Reference Figure 1 The present application discloses a multi-physical field coordinated waste film waterless decontamination and purification equipment, comprising a screening outer cylinder 1, a screening inner cylinder 2 and a guide pipe 11, wherein an impurity discharge port 12 is provided at the bottom of the screening outer cylinder 1, and the impurity discharge port 12 is used to connect with a dust removal device; the screening inner cylinder 2 is arranged in the screening outer cylinder 1, and a plurality of screening holes are provided on the side wall of the screening inner cylinder 2, the aperture of the screening hole is smaller than the diameter of the film to be screened, and there is a gap between the side wall of the screening inner cylinder 2 and the side wall of the screening outer cylinder 1 to form a separation interlayer 21; the guide pipe 11 is connected to the screening inner cylinder 2, and the other end of the guide pipe 11 is used to connect with an air supply device.

[0051] When screening the waste film mixed with fiber impurities, the waste film is blown into the screening inner cylinder 2 by the air flow of the air supply device through the guide pipe 11. The guide pipe 11 adopts a volute type arrangement. After the guide pipe 11 is connected with the air supply device, the air flow pushes the waste film along the guide pipe 11 into the screening inner cylinder 2, and the air flow in the guide pipe 11 can blow the waste film away in the screening inner cylinder 2; at the same time, since the guide pipe 11 is arranged in a volute type, the air flow drives the waste film to spirally fall along the side wall of the screening inner cylinder 2 in the screening inner cylinder 2. During the falling process, the aperture of the screening holes on the screening inner cylinder 2 is smaller than the film to be screened in the waste film and larger than the fiber impurities. Therefore, the film to be screened in the waste film is blocked by the side wall of the screening inner cylinder 2 and remains in the screening inner cylinder 2. The fiber impurities with smaller particle sizes in the waste film are affected by the centrifugal force during the spiral falling process and pass through the screening holes into the separation interlayer 21, and fall naturally under the action of their own gravity, and then enter the dust removal device through the impurity discharge port 12. No water resources are needed in the entire separation process. The airflow physical field formed by the volute-type guide pipe 11, the gravity of the fiber impurities themselves, and the particle size difference between the fiber impurities and the film to be screened can realize the screening of the film to be screened and the fiber impurities in the waste film, solving the problem of high water consumption, low separation and purification efficiency, and poor separation effect in the process of cleaning after the initial separation and crushing of the waste film.

[0052] Since the waste ground film near the axial direction of the screening inner cylinder 2 is less affected by the centrifugal force when it rotates and falls along the screening inner cylinder 2, in order to improve the overall screening efficiency of the waste ground film, a fine screening device is also provided in the screening inner cylinder 2 to assist the screening inner cylinder 2 in screening. The fine screening device includes a fine screen cylinder 3, which is arranged in the screening inner cylinder 2. The side wall of the fine screen cylinder 3 is also provided with a plurality of fine screen holes with an aperture smaller than the diameter of the ground film to be screened, and the discharge port of the fine screen cylinder 3 extends all the way to the outside of the screening outer cylinder 1. There is also a gap between the side wall of the fine screen cylinder 3 and the screening inner cylinder 2, and the discharge port of the guide tube 11 is arranged between the fine screen cylinder 3 and the screening inner cylinder 2, so that the waste ground film can rotate and fall between the gap between the fine screen cylinder 3 and the screening inner cylinder 2 when feeding.

[0053] When the waste ground film falls, the airflow blows along the volute-type guide pipe 11 to form a spiral wind field between the fine screen cylinder 3 and the gap between the screening inner cylinder 2. At the same time, since a plurality of fine screen holes are provided on the side wall of the fine screen cylinder 3, a part of the airflow passes through the fine screen holes and flows out along the discharge port of the fine screen cylinder 3 to form a negative pressure toward the inside of the fine screen cylinder 3. Therefore, the outer circle fiber impurities close to the screening inner cylinder 2 enter the separation interlayer 21 under the action of centrifugal force, and the fiber impurities close to the inner circle of the fine screen cylinder 3 enter the fine screen cylinder 3 under the action of negative pressure and are discharged from the outside of the screening outer cylinder 1 along the discharge port of the fine screen cylinder 3, further improving the screening efficiency.

[0054] Furthermore, in one embodiment of the present application, the fine screen cylinder 3, the screening inner cylinder 2 and the screening outer cylinder 1 are coaxially arranged so that the airflow can drive the waste film to move more evenly in the gap between the screening inner cylinder 2 and the fine screen cylinder 3, thereby improving the screening efficiency.

[0055] Since the ground film to be screened is relatively thin, in order to reduce the possibility that the ground film to be screened is adsorbed on the side wall of the fine screen cylinder 3 and blocks the fine screen holes when blown by the airflow, the fine screen device also includes a cleaning brush 31 and a first motor 32. The cleaning brush 31 is located in the screening inner cylinder 2 and attached to the side wall of the fine screen cylinder 3, and the length of the cleaning brush 31 is adapted to the length of the fine screen holes opened on the side wall of the fine screen cylinder 3; the first motor 32 is arranged in the screening inner cylinder 2 and is electrically connected to the cleaning brush 31. When the first motor 32 is turned on, the cleaning brush 31 can be driven to make a circular motion along the side wall of the fine screen cylinder 3. During the rotation of the cleaning brush 31, the ground film to be screened adsorbed on the side wall of the fine screen cylinder 3 can be swept off, thereby reducing the possibility that the ground film to be screened blocks the fine screen cylinder 3, and further improving the screening efficiency.

[0056] After the waste mulch is screened, in order to further facilitate the discharge of the screened mulch and reduce the possibility of the screened mulch being scattered around when discharged due to its thinness, a compression device for compressing the screened mulch is also provided at the discharge port of the screening inner cylinder 2. The compression device includes a compression cylinder 4, a compression auger 41 and a second motor 42. The compression cylinder 4 is arranged below the screening inner cylinder 2 so that the screened mulch in the screening inner cylinder 2 naturally falls into the compression cylinder 4 under the influence of its own gravity and airflow. The compression auger 41 and the second motor 42 are both arranged in the compression cylinder 4. The second motor 42 is electrically connected to the compression auger 41. When the second motor 42 is turned on, the compression auger 41 can rotate in the compression cylinder 4 and compress the screened mulch falling into the compression cylinder 4. A discharge port is provided at the bottom of the compression cylinder 4, and the screened ground film is continuously collected and compressed under the rotation of the compression auger 41, and finally a compressed and dense clean ground film block is formed and discharged through the discharge port of the compression cylinder 4, which is easy for subsequent packaging and processing, improves processing efficiency, and saves storage space.

[0057] In one embodiment of the present application, the bottom of the screening inner cylinder 2 is open, and the compression cylinder 4 is welded to the bottom of the screening inner cylinder 2 to reduce the possibility of a gap between the compression cylinder 4 and the screening inner cylinder 2. Furthermore, in order to further improve the compression quality of the compression cylinder 4, the auxiliary compression auger 41 compresses the screened ground film. The compression cylinder 4 is specifically configured to be conical, and the cross-sectional area of ​​the compression cylinder 4 gradually decreases from the end close to the screening inner cylinder 2 toward the end away from the screening inner cylinder 2, so as to assist the compression auger 41 in gathering the screened ground film in the compression cylinder 4, so as to facilitate the compression auger 41 to compress the screened ground film, improve the compression efficiency, and make it more convenient to use.

[0058] In view of the above-mentioned multi-physical field coordinated waste mulch film waterless decontamination and purification equipment proposed in this application, this application also proposes a method for using the multi-physical field coordinated waste mulch film waterless decontamination and purification equipment, which specifically includes the following steps:

[0059] S1: connecting the material guide pipe 11 with the air supply device, and the impurity discharge port 12 with the dust removal device;

[0060] During the actual installation process, a closable feeding port can be opened on the guide pipe 11, or the waste mulch film can be placed in the guide pipe 11 and then connected to the air supply device. The air supply device can use a fan as a power source to push the waste mulch film into the screening inner cylinder 2.

[0061] S2: Install the fine screen cylinder 3 and the first motor 32 in the screening inner cylinder 2, and install the cleaning brush 31 on the surface of the fine screen cylinder 3. The first motor 32 is electrically connected to the cleaning brush 31 to drive the cleaning brush 31 to rotate; install the compression cylinder 4 to the bottom of the screening inner cylinder 2, and install the compression auger 41 and the second motor 42 in the compression cylinder 4.

[0062] S3: The air supply device, the first motor 32, the second motor 42 and the dust removal device are turned on simultaneously to screen the waste ground film.

[0063] The airflow provided by the air supply device initially disperses the waste film in the volute guide pipe 11, and when the waste film enters the interlayer between the screening inner cylinder 2 and the fine screen cylinder 3, the fiber impurities in the waste film falling spirally close to the screening inner cylinder 2 pass through the screening inner cylinder 2 into the separation interlayer 21, and then are discharged from the impurity discharge port 12 under the influence of their own gravity and the dust removal device; at the same time, due to the setting of the fine screen holes on the fine screen cylinder 3, part of the airflow passes through the fine screen holes and is discharged from the discharge port of the fine screen cylinder 3 to form a negative pressure in the screening inner cylinder 2, so that the fiber impurities in the waste film close to the fine screen cylinder 3 are affected by the negative pressure and enter the fine screen cylinder 3. The first motor 32 drives the cleaning brush 31 to rotate on the surface of the fine screen cylinder 3, so as to timely sweep off the film to be screened adsorbed on the surface of the fine screen cylinder 3. The screened ground film enters the compression cylinder 4 at the bottom of the screening inner cylinder 2 under the influence of its own gravity and airflow, and the compression auger 41 collects and compresses the screened ground film, compresses the screened ground film and discharges it from the discharge port, thereby screening the waste ground film without using water resources, solving the problems of high water consumption, low separation and purification efficiency and poor separation effect in the process of initially separating and crushing the waste ground film and then cleaning it.

[0064] In the description of the present application, it should be noted that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0065] It should be noted that, in this application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0066] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A multi-physical field coordinated waste land film waterless decontamination purification equipment, characterized in that: It includes: A screening outer cylinder (1), wherein an impurity discharge port (12) is provided at the bottom of the screening outer cylinder (1), and the impurity discharge port (12) is used to connect to a dust removal device; A screening inner cylinder (2), wherein the screening inner cylinder (2) is arranged inside the screening outer cylinder (1), a gap between the side wall of the screening inner cylinder (2) and the side wall of the screening outer cylinder (1) forms a separation interlayer (21), and a plurality of screening holes are arranged on the screening inner cylinder (2), wherein the aperture of the screening hole is smaller than the diameter of the ground film to be screened and larger than the diameter of the fiber impurities; And, a material guide pipe (11), the material guide pipe (11) is connected to the screening inner cylinder (2), and the material guide pipe (11) is configured as a volute type and is used to connect to an air supply device.

2. The multi-physical field coordinated waste land film waterless decontamination purification equipment according to claim 1 is characterized in that: Also includes: A fine screening device, wherein the fine screening device is arranged in the screening inner cylinder (2) and is used to assist the screening inner cylinder (2) in performing synchronous screening.

3. The multi-physical field coordinated waste land film waterless decontamination purification equipment according to claim 2 is characterized in that: The fine screen device comprises: A fine screen cylinder (3), wherein the fine screen cylinder (3) is arranged in the screening inner cylinder (2), the discharge port of the fine screen cylinder (3) extends to the outside of the screening outer cylinder (1), and there is a gap between the side wall of the fine screen cylinder (3) and the side wall of the screening inner cylinder (2), the guide tube (11) extends into the gap between the fine screen cylinder (3) and the screening inner cylinder (2), and a plurality of fine screen holes are provided on the fine screen cylinder (3), the aperture of the fine screen holes being smaller than the diameter of the ground film to be screened and larger than the diameter of the fiber impurities.

4. The multi-physical field coordinated waste land film waterless decontamination purification equipment according to claim 2 is characterized in that: The fine screen device also includes: A cleaning brush (31), wherein the cleaning brush (31) is arranged on the side wall of the fine screen cylinder (3), and the length of the cleaning brush (31) is adapted to the length of the fine screen holes opened on the side wall of the fine screen cylinder (3); And, a first motor (32), wherein the first motor (32) is arranged in the screening inner cylinder (2), connected to the cleaning brush (31) and drives the cleaning brush (31) to rotate along the circumferential direction of the fine screen cylinder (3).

5. The multi-physical field coordinated waste land film waterless decontamination purification equipment according to claim 1 is characterized in that: Also includes: A compression device is connected to the discharge port of the screening inner cylinder (2) and is used to compress the screened ground film.

6. The multi-physical field coordinated waste land film waterless decontamination purification equipment according to claim 5 is characterized in that: The compression device comprises: A compression cylinder (4), the top of which is in communication with the screening inner cylinder (2); A compression auger (41), wherein the compression auger (41) is arranged in the compression cylinder (4); And, a second motor (42), wherein the second motor (42) is arranged on the compression cylinder (4) and is used to drive the compression auger (41) to rotate.

7. The multi-physical field coordinated waste land film waterless decontamination purification equipment according to claim 6 is characterized by: The compression cylinder (4) is configured to be conical, and the cross-sectional area of ​​the compression cylinder (4) gradually decreases from an end close to the screening inner cylinder (2) toward an end away from the screening inner cylinder (2).

8. A method for using the multi-physical field coordinated waste mulch waterless decontamination purification device as described in any one of claims 1 to 7, characterized in that: Specifically include: Connecting the material guide pipe (11) with an air supply device, and connecting the impurity discharge port (12) with a dust removal device; The air supply device is turned on, and the ground film to be screened enters the screening inner cylinder (2) from the material guide pipe (11) along with the air flow, and spirally falls along the inner wall of the screening inner cylinder (2) for screening.

9. The method for using the multi-physical field coordinated waste land film waterless decontamination purification device according to claim 8 is characterized in that: It also includes: Before starting the air supply device, the fine screen device is installed in the screening inner cylinder (2); The air supply device and the first motor (32) are simultaneously turned on to screen the ground film to be screened in the screening inner cylinder (2).

10. The method for using the multi-physical field coordinated waste land film waterless decontamination purification equipment according to claim 8 is characterized in that: It also includes: Before starting the air supply device, the compression device is installed at the discharge port of the screening inner cylinder (2); Simultaneously starting the air supply device and the second motor (42); The compression auger (41) compresses and discharges the screened ground film.

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