Residual film and foreign matter removing device

Abstract

The application provides a residual film impurity removing device, and relates to the technical field of agricultural machinery, which comprises a fan, a pickup device, a separation mechanism, an impurity discharging mechanism and a film removing device. The pickup device is arranged at the inlet end of the fan and is used for picking up film-impurity mixtures. The separation mechanism is arranged at the outlet end of the fan and is used for separating residual films and impurities. The impurity discharging mechanism is arranged at the outlet end of the fan and is located below the separation mechanism. The film removing device is arranged downstream of the separation mechanism and the impurity discharging mechanism and is used for removing films separated by the separation mechanism and the impurity discharging mechanism. The fan is used for blowing the film-impurity mixtures to the separation mechanism and the impurity discharging mechanism. The technical scheme can realize secondary screening of the film-impurity mixtures, greatly reduces the impurity content of the residual films, solves the problems that the impurity content of the residual films is still high due to incomplete separation of the film-impurity mixtures in the existing residual film impurity removing mode, and that the residual films are easily separated together with the impurities, resulting in serious pollution.

Description

Technical Field

[0001] This application relates to the field of agricultural machinery technology, and in particular to a residual film cleaning device and recycling system. Background Technology

[0002] Mulching technology plays an irreplaceable role in agricultural production. Removing mulch film from farmland using mechanized methods is currently one of the most effective methods and an important means of controlling residual film pollution. While there are many types of residual film recycling machines available, most of these models only focus on the collection rate of residual film. However, during the recycling process, a large amount of straw, gravel, and soil are mixed in, seriously affecting the subsequent processing and reuse of the recycled film.

[0003] Currently, there are various methods to address the issue of impurities in agricultural film recycling. These include: using fans to utilize the difference in suspension velocity between the film and impurities, using wind power to recover the film while simultaneously cleaning it; using vibration mechanisms to separate the film from impurities during the recycling process; direct washing; and centrifugal screening. However, due to the thinness of the film, some impurities easily become trapped within it. It is difficult to remove plant stalks, leaves, cotton clumps, and other impurities trapped in the film using wind or vibration alone, resulting in a high impurity rate in the recycled film. If the film is broken up and separated by centrifugal screening, some broken film fragments will easily be separated along with the impurities, leading to severe white pollution. Furthermore, direct washing wastes a large amount of water resources, causing water pollution.

[0004] Therefore, a residual film cleaning device is needed to at least solve the above problems. Summary of the Invention

[0005] The purpose of this application is to provide a residual membrane cleaning device to solve the problems of existing residual membrane cleaning methods, which result in a high impurity content in the residual membrane due to incomplete membrane impurity separation, and the easy separation of broken membranes along with impurities, leading to serious pollution.

[0006] To address the aforementioned technical problems, this application provides the following technical solutions:

[0007] This application provides a residual film cleaning device comprising: a blower; a pickup device located at the inlet end of the blower for picking up a mixture of film and impurities; a separation mechanism located at the outlet end of the blower for separating residual film and impurities; a discharge mechanism located at the outlet end of the blower and below the separation mechanism; and a film removal device located downstream of the separation mechanism and the discharge mechanism for removing residual film screened by the separation mechanism and the discharge mechanism; wherein the blower is used to blow the mixture of film and impurities toward the separation mechanism and the discharge mechanism.

[0008] In some embodiments of this application, the separation mechanism includes: a first conveying mechanism, the first conveying mechanism including a first conveyor belt; and a plurality of first film-attaching teeth, the plurality of first film-attaching teeth being evenly distributed on the first conveyor belt.

[0009] In some embodiments of this application, the first film-attaching tooth is arc-shaped, and when the first film-attaching tooth is located below the first conveyor belt, the non-connecting end of the first film-attaching tooth is positioned facing the wind; wherein, the first film-attaching tooth includes a main rod and at least one support rod, one end of the main rod is connected to the first conveyor belt, and at least one support rod is connected to the other end of the main rod.

[0010] In some embodiments of this application, the separation mechanism further includes: a first vibration device, the vibration end of the first vibration device being vibratoryly connected to the first conveyor belt for vibrating the first conveyor belt.

[0011] In some embodiments of this application, the impurity removal mechanism includes: a second conveying mechanism, the second conveying mechanism including a second conveyor belt, one end of the second conveyor belt being located at the outlet end of the fan, and the other end of the second conveyor belt being located below the separation mechanism and close to the demolding device; and a second vibration device, the vibration end of the second vibration device being vibratoryly connected to the second conveyor belt for vibrating the second conveyor belt.

[0012] In some embodiments of this application, the second conveying mechanism further includes a driving roller, a first driven roller, and a second driven roller arranged in a triangular shape, and the second conveyor belt is arranged around the driving roller, the first driven roller, and the second driven roller; the first driven roller and the second driven roller are respectively located at the same horizontal height, the first driven roller is arranged close to the fan, the second driven roller and the driving roller are arranged close to the film removal device, and the driving roller is located above the second driven roller; wherein, the second conveyor belt is evenly distributed with second film-attaching teeth.

[0013] In some embodiments of this application, the second conveying mechanism further includes a pair of side plates, the pair of side plates being disposed on both sides of the second conveyor belt, the side plates being provided with a waste discharge port near the first driven roller; and the second conveyor belt being evenly distributed with waste discharge holes.

[0014] In some embodiments of this application, the second conveyor belt is annular, and the second vibration device is a pair, with the vibration ends of the pair of second vibration devices respectively vibratingly connected to the inner and outer surfaces of the second conveyor belt.

[0015] In some embodiments of this application, the residual film cleaning device further includes: a film winding mechanism; the film removal device includes: a film removal roller, which is disposed adjacent to the drive roller and in contact with the second conveyor belt, and the linear speed of the film removal roller is greater than the linear speed of the second conveyor belt; the film winding mechanism is disposed on the side of the film removal roller away from the second conveyor belt and is disposed in contact with the film removal roller, for collecting the residual film removed from the film removal roller.

[0016] In some embodiments of this application, the picking device includes a roller and picking teeth connected to the roller. The roller is located below the inlet end of the blower, and the picking teeth are used to pick up the film-impurity mixture and deliver it to the inlet end of the blower when the roller rotates.

[0017] Compared to existing technologies, the residual film cleaning device provided in this application separates the membrane impurity mixture picked up by the picking device from the picking device using the airflow provided by the fan. The separated membrane impurity mixture is then blown by the fan to a separation mechanism and a discharge mechanism located at the fan outlet. The membrane impurity mixture blown out by the fan is received by the separation mechanism and the discharge mechanism for further membrane impurity separation. The discharge mechanism is located below the separation mechanism, allowing unscreened membrane impurity mixture after the first membrane impurity separation to fall onto the discharge mechanism for further membrane impurity separation. The separated residual film is then removed by a film removal device located downstream of the separation mechanism and the discharge mechanism, thus completing the residual film cleaning operation. The residual film cleaning device provided in this application significantly reduces the impurity content of the residual film by performing a secondary screening of the membrane impurity mixture. This solves the problems of existing residual film cleaning methods, which result in a high impurity content in the residual film due to incomplete membrane impurity separation, and the easy separation of broken film along with impurities, leading to severe contamination. Attached Figure Description

[0018] The above and other objects, features, and advantages of exemplary embodiments of this application will become readily understood by reading the following detailed description with reference to the accompanying drawings. In the drawings, several embodiments of this application are illustrated by way of example and not limitation, with the same or corresponding reference numerals denoteing the same or corresponding parts, wherein:

[0019] Figure 1 A schematic diagram of the residual film cleaning device of an exemplary embodiment of this application is shown;

[0020] Figure 2 A schematic diagram of the separation mechanism in a residual film cleaning device according to an exemplary embodiment of this application is shown;

[0021] Figure 3 A front view of the separation mechanism in a residual film cleaning apparatus of an exemplary embodiment of this application is shown;

[0022] Figure 4 A schematic diagram of the structure of the first film attachment tooth in the separation mechanism of an exemplary embodiment of this application is shown;

[0023] Figure 5 A schematic diagram of the impurity removal mechanism in a residual film cleaning device according to an exemplary embodiment of this application is shown;

[0024] Figure 6 A schematic diagram of the internal structure of the impurity removal mechanism in a residual film cleaning device according to an exemplary embodiment of this application is shown;

[0025] Figure 7 A schematic diagram of the structure of the second conveyor belt in the waste removal mechanism of an exemplary embodiment of this application is shown;

[0026] Figure 8 A partially enlarged schematic diagram of the surface of the second conveyor belt in a waste removal mechanism of an exemplary embodiment of this application is shown;

[0027] Figure 9 A schematic diagram of the structure of the second film attachment tooth in the impurity removal mechanism of an exemplary embodiment of this application is shown.

[0028] Explanation of icon numbers:

[0029] 1. Separation mechanism; 101. First conveying mechanism; 102. First conveyor belt; 103. Fixing block; 104. First film-attaching tooth; 105. Main rod; 106. Support rod; 107. First vibration device; 108. Connecting block; 109. Support plate; 110. Conveying roller; 2. Impurity removal mechanism; 201. Second conveying mechanism; 202. Second conveyor belt; 203. Driven roller; 204. First driven roller 205. Second driven roller; 206. Second vibration device; 207. Second film-attaching tooth; 209. Side plate; 210. Waste discharge port; 211. Waste discharge hole; 212. Adjustment device; 213. Support frame; 3. Fan; 301. Film removal roller; 302. Machine casing; 4. Film removal roller; 5. Film winding mechanism; 6. Pick-up device; 601. Pick-up tooth; 602. Roller; 7. Windproof cover; 8. Pressure relief plate. Detailed Implementation

[0030] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0031] It should be noted that, unless otherwise stated, the technical or scientific terms used in this application shall have the ordinary meaning as understood by one of ordinary skill in the art to which this application pertains.

[0032] Example 1

[0033] To address the problems existing in the prior art, embodiments of this application provide a residual film cleaning device, such as... Figure 1 As shown, the residual film cleaning device includes: a blower 3; a picking device 6, which is located at the inlet end of the blower 3 and is used to pick up the film-impurity mixture; a separation mechanism 1, which is located at the outlet end of the blower 3 and is used to separate the residual film and impurities; an impurity discharge mechanism 2, which is located at the outlet end of the blower 3 and below the separation mechanism 1; and a film removal device, which is located downstream of the separation mechanism 1 and the impurity discharge mechanism 2 and is used to remove the residual film screened by the separation mechanism 1 and the impurity discharge mechanism 2; wherein, the blower 3 is used to blow the film-impurity mixture toward the separation mechanism 1 and the impurity discharge mechanism 2.

[0034] The residual membrane cleaning device provided in this application separates the membrane impurity mixture picked up by the pickup device 6 from the pickup device 6 by the air force provided by the blower 3. The separated membrane impurity mixture is torn and broken by the blower 3 and blown out from the outlet of the blower 3. The separation mechanism 1 and the impurity discharge mechanism 2 are set at the outlet of the blower 3. The membrane impurity mixture blown out by the blower 3 is received by the separation mechanism 1 and the impurity discharge mechanism 2 for membrane impurity separation. By setting the impurity discharge mechanism 2 below the separation mechanism 1, the unscreened membrane impurity mixture after the first membrane impurity separation by the separation mechanism 1 falls onto the impurity discharge mechanism 2 for further membrane impurity separation. The separated residual membrane is then removed by the membrane removal device located downstream of the separation mechanism 1 and the impurity discharge mechanism 2, thereby completing the residual membrane cleaning operation. The residual membrane cleaning device provided in this application can greatly reduce the impurity content of the residual membrane by performing secondary screening of the membrane impurity mixture, improve the utilization rate of residual membrane recycling, and reduce environmental pollution.

[0035] The fan 3 can be an existing product. In the embodiments of this application, the fan 3 can be a centrifugal fan, such as... Figure 1As shown, it includes a stripping roller 301 and a housing 302. The housing 302 is disposed on the outer periphery of the stripping roller 301. The stripping roller 301 is driven to rotate at high speed by the input mechanical energy to increase the gas pressure around the stripping roller 301 and discharge gas. Ventilation and air extraction can be carried out through a pair of openings opposite to each other on the housing 302.

[0036] In the embodiments of this application, a windproof cover 7 is provided between the fan 3 and the separation mechanism 1 and the impurity removal mechanism 2, such as... Figure 1 As shown, the wind shield 7 is used to ensure that the gas supplied by the fan 3 is blown as far as possible towards the separation mechanism 1 and the impurity removal mechanism 2, so as to avoid insufficient airflow to the separation mechanism 1 and the impurity removal mechanism 2 due to gas leakage, which would cause the membrane impurity mixture to accumulate near the fan 3 and ultimately lead to incomplete membrane impurity separation. At the same time, the wind shield 7 is also used to isolate the membrane impurity mixture from the outside environment, preventing the membrane impurity mixture from flying around randomly under the action of wind and polluting the environment.

[0037] In the embodiments of this application, a pair of pressure relief plates 8 are provided between the separation mechanism 1 and the impurity removal mechanism 2, such as... Figure 1 As shown, a pair of pressure relief plates 8 are arranged vertically opposite each other, and each pressure relief plate 8 is connected to the separation mechanism 1 and the impurity removal mechanism 2 respectively. Each pressure relief plate 8 is provided with multiple pressure relief holes. By setting a pair of pressure relief plates 8, the membrane impurity mixture blown out by the blower 3 can be prevented from flying out in all directions and causing environmental pollution. At the same time, the pressure relief holes on the pressure relief plates 8 can balance the air pressure between the residual membrane cleaning device and the outside air.

[0038] In the embodiments of this application, such as Figure 2 and Figure 3 As shown, the separation mechanism 1 includes: a first conveying mechanism 101, which includes a first conveyor belt 102; and a plurality of first film-attaching teeth 104, which are evenly distributed on the first conveyor belt 102.

[0039] The first conveying mechanism 101 also includes a pair of conveying rollers 110, which are arranged opposite each other in the horizontal direction. The first conveyor belt 102 is arranged around the pair of conveying rollers 110 and is powered by the conveying rollers 110 to drive the first conveyor belt 102 to move.

[0040] The film-impurity mixture blown out by the blower 3 is attached to the first film-attaching tooth 104 set on the first conveyor belt 102. The attached film-impurity mixture is continuously blown by the wind and the weight of the impurities causes the flexible residual film to unfold. The impurities are initially separated from the attached flexible residual film under their own weight, thereby reducing the impurity content of the residual film. The residual film that has completed the separation of film and impurities is transported by the first conveying mechanism 101 to the downstream defilming device for defilming.

[0041] In the embodiments of this application, such as Figure 4As shown, the first film-attaching tooth 104 is arc-shaped, and when the first film-attaching tooth 104 is located below the first conveyor belt 102, the non-connecting end of the first film-attaching tooth 104 is positioned facing the wind; wherein, the first film-attaching tooth 104 includes a main rod 105 and at least one support rod 106, one end of the main rod 105 is connected to the first conveyor belt 102, and at least one support rod 106 is connected to the other end of the main rod 105.

[0042] The first film-attaching tooth 104 has an arc-shaped structure and can be positioned towards the air outlet of the blower 3, so that the blown film-impurity mixture can contact the first film-attaching tooth 104 and catch the residual film. Specifically, the main rod 105 can be arc-shaped, and the support rod 106 is connected to the non-connecting end of the main rod 105 to assist the main rod 105 in hooking the residual film.

[0043] The first membrane attachment tooth 104 may also include only the main rod 105, without the support rod 106.

[0044] The first film attachment tooth 104 can be a branch-shaped structure, such as a structure similar to tree branches. There can be multiple support rods 106, which are evenly distributed or curved and set at the non-connecting end of the main rod 105. When the blower 3 blows out the film-impurity mixture, the support rods 106 facing the blower 3 and the main rod 105 can better hook the residual film.

[0045] The first film-attaching tooth 104 can be made of iron wire with a diameter of 2mm. There can be 2 to 3 support rods 106. When the first film-attaching tooth 104 is below the first conveyor belt 102, multiple support rods 106 are positioned facing the wind to maximize the amount of film-impurity mixture that can be attached. The first conveying mechanism 101 is positioned with the wind. The film-impurity mixture hooked by the first film-attaching tooth 104 is then conveyed by the first conveying mechanism 101 to the downstream film-removing device for film removal after film-impurity separation. By positioning the first conveying mechanism 101 with the wind, there is no residual film or film-impurity mixture when the first film-attaching tooth 104 is above the first conveyor belt 102, preventing impurities from falling onto the first conveyor belt 102 and requiring cleaning. The first film-attaching tooth 104 can be configured as a branch structure of a certain length to hook larger pieces of residual film.

[0046] In the embodiments of this application, a plurality of fixing blocks 103 are formed on the first conveyor belt 102 by vulcanization. The plurality of fixing blocks 103 can be arranged in parallel intervals or cross-arranged. The fixing blocks 103 are long rectangular in shape, and each fixing part is provided with a plurality of mounting holes. The end of the main rod 105 of the plurality of first film-attaching teeth 104 connected to the first conveyor belt 102 can be set in a spiral shape. The first conveying mechanism 101 also includes a connecting block 108 made of steel. The connecting block 108 is provided with a plurality of docking holes corresponding to the fixing blocks 103. The first film-attaching teeth 104 are clamped and fixed between the fixing blocks 103 and the connecting blocks 108 by using bolts to pass through the docking holes, the end of the main rod 105 connected to the first conveyor belt 102, and the mounting holes.

[0047] In the embodiments of this application, such as Figure 1 As shown, the windproof cover 7 is located at the connection between the fan 3 and the separation mechanism 1, corresponding to the position and shape of the first film-attaching tooth 104. It is provided with multiple elongated holes so that the first film-attaching tooth 104 can pass through the windproof cover 7 during the conveying process of the first conveying mechanism 101 and reciprocate under the drive of the first conveyor belt 102.

[0048] In the embodiments of this application, the separation mechanism 1 further includes: a first vibration device 107, the vibration end of the first vibration device 107 being vibratoryly connected to the first conveyor belt 102 for vibrating the first conveyor belt 102.

[0049] The first vibration device 107 drives the first conveyor belt 102 to vibrate, and the impurities can be better separated from the suspended flexible residual film under continuous vibration and its own weight. It can also cause sticky impurities that are difficult to separate to vibrate off, thereby further reducing the impurity content of the residual film.

[0050] In the embodiments of this application, such as Figures 1 to 3 As shown, the first vibration device 107 is connected to the inner surface of the first conveyor belt 102. The separation mechanism 1 also includes a pair of support plates 109. The pair of support plates 109 are disposed on both sides of the first conveyor belt 102. The pair of support plates 109 are used to support and connect a pair of conveyor rollers 110. Since the vibration of the first vibration device 107 drives the surrounding air to vibrate, a pressure difference is formed between the internal cavity of the separation mechanism 1 and the outside. Therefore, both support plates 109 are provided with through holes to balance the air pressure between the internal cavity of the separation mechanism 1 and the outside.

[0051] The first vibration device 107 can be an existing product such as a compressed air vibrator, ultrasonic vibrator, motor vibrator, or magnetic vibrator. In the embodiments of this application, the first vibration device 107 can be a motor vibrator. Motor vibrators have advantages such as simple structure, convenient use, adjustable amplitude, and low noise, and are suitable for vibration control and vibratory screening in various mechanical equipment and processes. The motor vibrator consists of a motor, a reducer, and an eccentric block. When the motor runs, the eccentric block drives the equipment to rotate or vibrate, thereby producing the desired vibration effect.

[0052] In the embodiments of this application, such as Figure 5 and Figure 6 As shown, the impurity removal mechanism 2 includes: a second conveying mechanism 201, which includes a second conveyor belt 202, one end of which is located at the outlet end of the blower 3, and the other end of which is located below the separation mechanism 1 and close to the demolding device; and a second vibration device 206, the vibration end of which is vibratingly connected to the second conveyor belt 202 for vibrating the second conveyor belt 202.

[0053] Separation mechanism 1 is used to hook larger pieces of residual film and separate film impurities, while the second conveyor belt 202 of the impurity removal mechanism 2 is used to receive the unhooked fine film impurity mixture blown out from the outlet end of the blower 3, as well as the unseparated fine film fragments that fall from separation mechanism 1. The second vibration device 206 drives the second conveyor belt 202 to vibrate, and the fine film impurity mixture and the unseparated fine film fragments on the second conveyor belt 202 achieve secondary film impurity separation under continuous vibration. The second conveying mechanism 201 transports the separated residual film to the defilming device for defilming, thereby further reducing the impurity content of the residual film.

[0054] The structure of the second vibration device 206 can be the same as that of the first vibration device 107, or the second vibration device 206 can be other devices with vibration effects, which will not be elaborated here.

[0055] In the embodiments of this application, such as Figure 5 and Figure 6 As shown, the second conveying mechanism 201 also includes a driving roller 203, a first driven roller 204, and a second driven roller 205 arranged in a triangular shape. The second conveyor belt 202 is arranged around the driving roller 203, the first driven roller 204, and the second driven roller 205. The first driven roller 204 and the second driven roller 205 are located at the same horizontal height. The first driven roller 204 is located near the fan 3, and the second driven roller 205 and the driving roller 203 are located near the film removal device. The driving roller 203 is located above the second driven roller 205. The second conveyor belt 202 is evenly provided with second film-attaching teeth 207 for attaching residual film.

[0056] The second conveyor belt 202 between the first driven roller 204 and the driving roller 203 forms an inclined conveying surface. This conveying surface forms an angle with the horizontal direction, and the part of the conveying surface near the fan 3 is lower than the part near the delaminating device. This allows the impurities initially separated by the separation mechanism 1 to slide down from top to bottom and fall off, thereby achieving a self-cleaning effect. The residual film contained in the impurities that has not been separated by the separation mechanism 1 can be caught by the second film-attaching teeth 207 and then conveyed to the delaminating device for delaminating.

[0057] In the embodiments of this application, the angle between the inclined transmission surface of the second conveyor belt 202 and the horizontal direction can be 50°-70°. This angle allows the transmission surface to have a large inclination angle arrangement. Under the vibration action of the second vibration device 206, larger rod-shaped materials roll downwards on the surface of the conveyor belt and roll to the lower end of the belt to separate. The residual film or mulch film, being lightweight, is hung by the second film-attaching teeth 207 and transported upwards to the film-removing device to achieve film impurity separation.

[0058] The conveying direction of the second conveying mechanism 201 is a circular direction starting from the first driven roller 204, proceeding to the driving roller 203, the second driven roller 205, and finally returning to the first driven roller 204. Impurities separated from the residual film, under the continuous vibration of the second vibration device 206 and their own gravity, roll down along the conveying surface in the opposite direction to the conveying direction until they detach from the second conveying mechanism 201. The residual film is then carried upwards along the conveying direction by the second film-attaching teeth 207 to the defilming device for film impurity separation. This avoids the second conveying mechanism 201 carrying impurities into the defilming device when conveying the residual film, thus preventing incomplete film impurity separation.

[0059] In the embodiments of this application, such as Figures 5 to 7 As shown, the second conveyor belt 202 is annular, and the second vibration device 206 is a pair. The vibration ends of the pair of second vibration devices 206 are respectively vibratingly connected to the inner and outer surfaces of the second conveyor belt 202.

[0060] The vibrating ends of a pair of second vibrating devices 206 are vibratingly connected to the inner and outer surfaces of the second conveyor belt 202, respectively. This allows dry impurities to slide down the inclined second conveyor belt 202 from top to bottom and fall off under the vibration of the second vibrating devices 206 and their own gravity. At the same time, when the impurities adhering to the second conveyor belt 202 are located on the conveying surface of the second conveyor belt 202 facing the ground, they will detach from the second conveyor belt 202 and fall to the ground under the vibration of the second vibrating devices 206 and their own gravity, thereby achieving a self-cleaning effect.

[0061] In the embodiments of this application, such as Figure 5 and Figure 6As shown, the second conveying mechanism 201 also includes a pair of side plates 209, which are disposed on both sides of the second conveyor belt 202. The side plates 209 are provided with a waste discharge port 210 near the first driven roller 204; and the second conveyor belt 202 is evenly distributed with waste discharge holes 211.

[0062] A pair of side plates 209 are used to connect and support the driving roller 203, the first driven roller 204, and the second driven roller 205. The waste discharge port 210 is a rectangular opening, such as... Figure 8 As shown, the impurity discharge hole 211 can be configured as a waist hole to separate smaller impurities. The second film attachment teeth 207 are evenly distributed to avoid the area where the impurity discharge hole 211 is located. Due to the action of wind pressure and a pair of second vibration devices 206, the second conveying mechanism 201 forms an air pressure difference between the inside of the second conveying mechanism 201 and the outside. The impurity discharge port 210 can balance the air pressure between the inside of the second conveying mechanism 201 and the outside.

[0063] In the embodiments of this application, the second attachment tooth 207 is pine cone-shaped and serrated, such as... Figure 9 As shown, the second film-attaching teeth 207 are formed by vulcanization on the second conveyor belt 202. The height of the second film-attaching teeth 207 is less than the radius of impurities such as cotton stalks. Under the vibration of the second vibration device 206, larger rod-shaped materials roll downward on the first surface of the second conveyor belt 202 and are separated at the lower end of the second conveyor belt 202. The residual film, being lightweight, is attached to the pine cone-shaped sawtooth structure and transported upward along the conveying direction to the film removal device for film and impurity separation. Smaller straw and soil fall into the inner cavity of the second conveyor belt 202 through the discharge hole 211. The second vibration device 206, located on the second surface, vibrates to shake off impurities on the outer surface of the second conveyor belt 202 and throws up impurities on the inner surface of the second conveyor belt 202. The cavity deforms under the action of wind pressure, the weight of the film and soil on the second conveyor belt 202, and the vibration of the pair of second vibration devices 206, forming an external pressure inside the cavity. This pressure blows the impurities out from the square discharge port 210, thereby cleaning the residual impurities and achieving self-cleaning.

[0064] In the embodiments of this application, such as Figure 5 and Figure 6 As shown, the impurity removal mechanism 2 also includes an adjustment device 212, which is connected to the first driven roller 204 and is used to adjust the tension of the second conveyor belt 202; a pair of support frames 213, which are respectively connected to a pair of side plates 209, and the pair of support frames 213 are arranged horizontally opposite each other below the second surface to support the second conveying mechanism 201 to form a certain height with the ground.

[0065] Since the driving roller 203 is usually fixed in a suitable position to meet positioning requirements, the tension of the conveyor belt is usually adjusted by adjusting the distance of the driven roller. The distance of the driven roller can be adjusted manually or automatically.

[0066] The adjusting device 212 can be any existing device for adjusting conveyor belt tension, such as a screw tensioning device, a gravity tensioning device, or an electric automatic tensioner. In the embodiment of this application, the adjusting device 212 adopts a screw tensioning device, which has a simple structure and is easy to operate. The screw tensioning device adjusts the tension of the conveyor belt by manually rotating a screw, which causes a slide with a nut and a driven roller mounted on the slide to move longitudinally along the conveyor belt direction.

[0067] In the embodiments of this application, the debris removal mechanism 2 further includes a soil scraper, which can be connected to the side plate 209 and is disposed close to the outer surface of the second conveyor belt 202. When the second conveying mechanism 201 is working, the second conveyor belt 202 moves relative to the soil scraper, and the soil scraper is used to scrape off the soil adhering to the outer surface of the second conveyor belt 202.

[0068] In the embodiments of this application, such as Figure 1 As shown, it also includes: a film winding mechanism 5; the film removal device includes: a film removal roller 4, which is arranged adjacent to the drive roller 203 and in contact with the second conveyor belt 202, and the linear speed of the film removal roller 4 is greater than the linear speed of the second conveyor belt 202; the film winding mechanism 5 is located on the side of the film removal roller 4 away from the second conveyor belt 202 and is arranged in contact with the film removal roller 4, and is used to collect the residual film removed from the film removal roller 4.

[0069] The stripping roller 4 contacts the contact surface of the second conveyor belt 202, and the linear speed of the stripping roller 4 is greater than that of the second conveyor belt 202. The residual film hanging on the second film-attaching tooth 207 is conveyed to the front end of the stripping roller 4 by the second conveying mechanism 201 and fed between the stripping roller 4 and the second conveyor belt 202. Under the action of the pulling force formed between the stripping roller 4 and the second conveyor belt 202, the film is detached from the second film-attaching tooth 207, thus achieving stripping.

[0070] In the embodiments of this application, the stripping roller 4 is disposed below the separation mechanism 1 and is disposed at the output end of the first conveying mechanism 101. The residual film hanging on the first film-attaching tooth 104 is conveyed to the front end of the stripping roller 4 by the first conveying mechanism 101. Since the residual film hanging on the first film-attaching tooth 104 is a large piece of residual film that has been extended, the non-connecting end of the large piece of residual film contacts the stripping roller 4 and is fed between the stripping roller 4 and the film winding mechanism 5. Under the action of the pulling force formed between the stripping roller 4 and the film winding mechanism 5, it is detached from the first film-attaching tooth 104, thereby achieving stripping.

[0071] The film winding mechanism in the embodiments of this application includes two conveying devices, each with a conveyor belt. The two conveying devices are arranged crosswise, with one end close to each other and the other end far apart. The conveyor belt of one of the conveying devices contacts the stripping roller 4, and the linear speed of the stripping roller 4 is greater than the linear speed of the conveyor belt of the conveying device, so that a pulling force is generated when the stripping roller 4 and the film winding mechanism 5 are working. The film winding mechanism 5 conveys the collected residual film on its conveying devices and finally discharges it from the end where the two conveying devices are close to each other. The film winding mechanism 5 can also be other existing products, and the technologies for stripping, winding, and residual film recycling can all adopt existing technologies, which will not be described in detail here.

[0072] In the embodiments of this application, such as Figure 1 As shown, the picking device 6 includes a roller 602 and picking teeth 601 connected to the roller 602. The roller 602 is located below the inlet end of the blower 3. The picking teeth 601 are used to pick up the film impurity mixture when the roller 602 rotates and send it to the inlet end of the blower 3.

[0073] There can be multiple picking teeth 601, which are evenly distributed on the outer surface of the roller 602. The picking teeth 601 are used to tear and hook the residual film on the ground. The residual film picked up by the picking teeth 601 contains impurities. When the roller 602 rotates, it drives the picking teeth 601 to rotate. When the picking teeth 601 with the film and impurity mixture rotates to the inlet end of the blower 3, the blower 3 carries away the film and impurity mixture on the picking teeth 601, thus realizing the removal of the film and impurity mixture from the picking teeth 601.

[0074] This residual film cleaning device can be installed on residual film recycling equipment or on post-recycling residual film processing equipment for membrane impurity separation. Based on the characteristic that the flexible material of the mulch film is easily caught, the blower 3 first blows the membrane-impurity mixture picked up by the pickup device 6 towards the separation mechanism 1. The separation mechanism 1 hooks up larger pieces of film, and then, under the action of wind, vibration, and the weight of the impurities, the flexible mulch film unfolds. Discrete impurities are initially separated from the hooked flexible residual film under their own weight, thereby reducing the impurity content of the residual film. Then, the impurity removal mechanism 2 located below the separation mechanism 1 uses the unhooked fine membrane-impurity mixture blown from the outlet of the blower 3, as well as the unseparated fine residual film falling from the separation mechanism 1, to hook the fine residual film through the second film-hooking teeth 207. Then, through the setting of an inclined surface, vibration, and the weight of the impurities, a secondary separation of the fine membrane-impurity mixture is achieved, further reducing the impurity content of the residual film and improving the recyclability of the residual film.

[0075] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A residual film cleaning device, characterized in that, include: Fan; A pickup device is provided at the inlet end of the blower and is used to pick up the film-impurity mixture; A separation mechanism, located at the outlet end of the fan, is used to separate residual film and impurities; A debris removal mechanism is provided at the outlet end of the fan and located below the separation mechanism; A film removal device is provided downstream of the separation mechanism and the impurity removal mechanism, and is used to remove the residual film screened by the separation mechanism and the impurity removal mechanism; The blower is used to blow the membrane impurity mixture toward the separation mechanism and the impurity removal mechanism; The separation mechanism includes a first conveying mechanism, which includes a first conveyor belt; a plurality of first film-attaching teeth, which are evenly distributed on the first conveyor belt; the first film-attaching teeth are arc-shaped, and when the first film-attaching teeth are located below the first conveyor belt, the non-connecting ends of the first film-attaching teeth are positioned facing the wind; wherein, the first film-attaching teeth include a main rod and at least one support rod, one end of the main rod is connected to the first conveyor belt, and at least one support rod is connected to the other end of the main rod; and a first vibration device, the vibration end of the first vibration device being vibratoryly connected to the first conveyor belt for vibrating the first conveyor belt; The impurity removal mechanism includes a second conveying mechanism, which includes a second conveyor belt. One end of the second conveyor belt is located at the outlet end of the fan, and the other end of the second conveyor belt is located below the separation mechanism and close to the demolding device. A second vibration device is also included, with its vibration end oscillatingly connected to the second conveyor belt for vibrating the second conveyor belt. The second conveying mechanism further includes a driving roller, a first driven roller, and a second driven roller arranged in a triangular shape. The second conveyor belt is arranged around the driving roller, the first driven roller, and the second driven roller. The first driven roller and the second driven roller are located at the same horizontal height. The first driven roller is located near the fan, and the second driven roller and the driving roller are located near the film removal device, with the driving roller located above the second driven roller. The second conveyor belt is evenly distributed with second film-attaching teeth. The film removal device includes a film removal roller, which is arranged adjacent to the drive roller and in contact with the second conveyor belt. The linear speed of the film removal roller is greater than the linear speed of the second conveyor belt, so that the residual film hanging on the second film attachment teeth is conveyed by the second conveying mechanism to the front end of the film removal roller. Under the action of the tensile force formed between the film removal roller and the second conveyor belt, the film is detached from the second film attachment teeth, thereby achieving film removal. A film winding mechanism is provided on the side of the stripping roller away from the second conveyor belt. It is used to collect the residual film removed from the stripping roller. The film winding mechanism includes two conveying devices, each with a conveyor belt. The two conveying devices are arranged crosswise, with one end close to each other and the other end far apart. The conveyor belt of one of the conveying devices is in contact with the stripping roller, and the linear speed of the stripping roller is greater than the linear speed of the conveyor belt of the conveying device, so that a pulling force is generated when the stripping roller and the film winding mechanism are working.

2. The residual film cleaning device according to claim 1, characterized in that, The second conveying mechanism further includes a pair of side plates, which are disposed on both sides of the second conveyor belt, and the side plates are provided with discharge ports near the first driven roller; and, The second conveyor belt is evenly distributed with waste removal holes.

3. The residual film cleaning device according to claim 1, characterized in that, The second conveyor belt is a ring, and the second vibration device is a pair, with the vibration ends of the pair of second vibration devices being vibratoryly connected to the inner and outer surfaces of the second conveyor belt, respectively.

4. The residual film cleaning device according to claim 1, characterized in that, The picking device includes a roller and picking teeth connected to the roller. The roller is located below the inlet end of the blower. The picking teeth are used to pick up the film impurity mixture and send it to the inlet end of the blower when the roller rotates.

Images