Agricultural waste mulching film and impurity circulating air separation device

Abstract

The invention discloses an agricultural waste mulching film and impurity circulating air separation device, and belongs to the technical field of fixed material separation, the agricultural waste mulching film and impurity circulating air separation device comprises a mounting frame, a conveying belt is arranged on the mounting frame, baffles are connected to the two sides of the mounting frame, and a first screening roller, a roller and a second screening roller are rotationally mounted on the baffles; cleaning brushes are arranged on the two sides of the first screening roller and the two sides of the second screening roller correspondingly, a feeding hopper and a draught fan are fixedly installed on the feeding channel, and a fan is fixedly installed in one end of the second screening roller. Mulching films and impurities are screened in a rolling mode, the plastic mulching films are separated from straw and other impurities through the draught fan and the fan, the mulching films are adsorbed through the fan and conveyed to the storage bin, the screened impurities are conveyed to a designated collection site through the conveying belt, and therefore the problem that the mulching films and the straw impurities are difficult to separate is effectively solved; the mulching film recycling device is low in equipment cost, easy to operate and more economical and practical.

Description

Technical Field

[0001] The invention belongs to the technical field of fixed material separation, and in particular relates to a device for separating agricultural waste mulch film from impurity circulating air. Background Art

[0002] In agricultural production, mulch films are widely used to cover the soil to retain moisture, inhibit weed growth and increase crop yields. However, as the mulch films age, they gradually age and break, becoming waste mulch fragments scattered in the fields. If these fragments are not treated, they will gradually decompose into microplastic particles, pollute the soil, affect the growth of crops, and even pose a threat to human health through the food chain. And after recycling the mulch films, the materials can be recovered by separating the waste mulch films from impurities, reducing the demand for new plastic raw materials.

[0003] The existing technology usually uses manual separation or electrostatic separation to separate waste mulch film and impurities. Manual separation is inefficient, electrostatic separation is difficult to operate, and the equipment cost is high, making it difficult to promote and use it widely. This brings great difficulties to the recycling and reuse of mulch film and also causes certain pollution to the environment. Therefore, developing a device that is simple to operate, economical and practical, and can effectively separate agricultural waste mulch film from impurities has become a problem that needs to be urgently solved in the current agricultural field. Summary of the invention

[0004] In response to the problems existing in the prior art, the present invention provides a device for separating agricultural waste mulch film and impurities through circulating air, which has the advantages of good separation effect, low cost, and economy and practicality. It solves the problems that the prior art usually adopts manual separation or electrostatic separation, the manual separation efficiency is low, the electrostatic separation operation is difficult, the equipment cost is high, and it is difficult to promote and use it widely.

[0005] The present invention is implemented as follows: a device for separating agricultural waste mulch film and impurities by circulating air, comprises a mounting frame, a conveyor belt is arranged on the mounting frame, the conveyor belt is driven by a second motor, baffles are fixedly connected on both sides of the upper end of the mounting frame, a first screening roller, a drum and a second screening roller are rotatably installed on the baffles through a driving mechanism, cleaning brushes are arranged on both sides of the first screening roller and the second screening roller, a feed channel is plugged into one end of the first screening roller, a feed hopper and a fan are fixedly installed on the feed channel, and a fan is fixedly installed inside one end of the second screening roller.

[0006] As a preferred embodiment of the present invention, the driving mechanism includes a first motor and a rotating shaft, the first motor is fixedly installed on the outside of the baffle, the rotating shaft is rotatably installed between two baffles on the same side, and a transmission assembly is arranged between the first motor and the rotating shaft.

[0007] As a preferred embodiment of the present invention, the transmission assembly includes a chain and two sprockets, the two sprockets are fixedly connected to the output end of the first motor and the shaft body of the rotating shaft respectively, and the chain is meshingly sleeved on the two sprockets.

[0008] As a preferred embodiment of the present invention, gears are fixedly sleeved on both ends of the rotating shaft, and gear rings are fixedly sleeved on both ends of the drum, and the gear rings are meshingly connected with the gears.

[0009] As a preferred embodiment of the present invention, a plurality of dividing plates are arranged on the inner circumference of the drum, and two ends of the drum are fixedly connected to the first screening roller and the second screening roller respectively.

[0010] As a preferred embodiment of the present invention, a supporting roller is rotatably mounted on the inner side of the baffle, and the supporting roller is rollingly connected with the outer circumferential surfaces of the first screening roller and the second screening roller.

[0011] As a preferred embodiment of the present invention, the cleaning brush is detachably mounted on a mounting plate, and the bottom of the mounting plate is fixedly connected to the inner wall of the baffle.

[0012] As a preferred embodiment of the present invention, a central axis is provided inside the feed channel, and a first spiral feed blade is fixedly arranged around the central axis, and one end of the first spiral feed blade extends to the bottom of the feed hopper, and the other end of the first spiral feed blade extends to the bottom of the fan.

[0013] As a preferred embodiment of the present invention, one end of the central axis away from the feed hopper extends to the outside of the feed channel, and the end of the central axis is fixedly connected to a mounting plate, and a plurality of annular connecting rods equidistantly arranged are fixedly connected to the mounting plate, and a rolling roller is provided at the end of the connecting rod, and the rolling roller is attached to the inner wall of the first screening roller.

[0014] As a preferred embodiment of the present invention, a roller shaft of the rolling roller at one end away from the feed channel is fixedly connected with a second spiral feeding blade.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention drives the first screening roller, the drum and the second screening roller to rotate through a driving mechanism to perform rolling screening on ground film and impurities, and separates plastic ground film from impurities such as straw through a blower and a fan. The ground film is adsorbed by the fan and transported to a storage bin, and the screened impurities fall onto a conveyor belt and are transported to a designated collection location through the conveyor belt, thereby effectively solving the problem of difficulty in separating ground film from straw impurities, facilitating subsequent recycling and reuse of the ground film, and having low equipment cost, simple operation, and being more economical and practical.

[0016] 2. The present invention can clean the impurities in the mesh of the first screening roller and the second screening roller to prevent clogging by arranging a cleaning brush. By installing the bottom of the mounting plate on the baffle, impurities can be prevented from flying out of the baffle, thereby preventing impurities from flying out and ensuring that the impurities fall directly onto the conveyor belt or slide along the inner wall of the baffle onto the conveyor belt.

[0017] 3. The inner circumference of the drum of the present invention is provided with a plurality of dividing plates, which are spiral and equidistantly arranged on the inner wall of the drum. When the material moves into the inside of the drum, it will be divided into a plurality of portions by the dividing plates, thereby breaking up the material, avoiding the adhesion and accumulation of the material, and improving the separation effect and efficiency.

[0018] 4. The present invention can stably transport the material to the bottom of the fan by setting the first spiral conveying blade. When the material is transported to the bottom of the fan, it can be blown by the fan and enter the first screening roller. In addition, the first spiral conveying blade can also prevent the connection between the feed hopper and the feed channel from being blocked.

[0019] 5. The present invention can drive the rolling roller to rotate through the rotation of the first screening roller, thereby rolling the material, crushing impurities such as soil blocks and separating the impurities from the ground film, and is suitable for situations where large soil blocks and ground films are bonded. Through the rotation of the first screening roller, the central shaft can be driven to rotate through the rolling roller and the connecting rod, so that the first spiral feeding blade rotates to transport the material. It should be noted that in addition to rolling friction, there is also sliding friction between the rolling roller and the inner wall of the first screening roller, and the sliding friction can make the rolling roller and the connecting rod drive the central shaft to rotate. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall first-viewing perspective stereoscopic structure of Example 1 of the present invention; Figure 2 It is a schematic diagram of the overall second viewing angle stereoscopic structure of Example 1 of the present invention; Figure 3 This is a front structural schematic diagram of Embodiment 1 of the present invention; Figure 4 For Example 1 of the present invention Figure 1 A magnified view of the structure at B in the middle; Figure 5 For Example 1 of the present invention Figure 3 Schematic diagram of the three-dimensional structure of the middle AA section; Figure 6 For Example 1 of the present invention Figure 5 A magnified view of the structure at C in the middle; Figure 7 It is a schematic diagram of the top view of the structure of Embodiment 2 of the present invention; Figure 8 For Example 2 of the present invention Figure 7Schematic diagram of the structure of the middle DD section; Fig. 9 For Example 2 of the present invention Figure 8 Enlarged view of the structure at point E in the middle.

[0021] In the figure: 1. mounting frame; 2. driving mechanism; 21. first motor; 22. sprocket; 23. chain; 24. rotating shaft; 25. gear; 3. cleaning brush; 31. mounting plate; 4. conveyor belt; 5. second motor; 6. baffle; 7. supporting roller; 8. feeding channel; 9. feeding hopper; 10. fan; 11. first screening roller; 12. roller; 13. gear ring; 14. second screening roller; 15. fan; 16. dividing plate; 17. central shaft; 18. first spiral feed blade; 19. mounting plate; 20. connecting rod; 26. crushing roller; 27. second spiral feed blade. DETAILED DESCRIPTION

[0022] In order to further understand the content, features and effects of the present invention, the following embodiments are given as examples and described in detail with reference to the accompanying drawings.

[0023] The structure of the present invention is described in detail below in conjunction with the accompanying drawings.

[0024] Example 1: Figures 1 to 6 As shown, an agricultural waste mulch film and impurity circulating air separation device provided by an embodiment of the present invention includes a mounting frame 1, a conveyor belt 4 is arranged on the mounting frame 1, the conveyor belt 4 is driven by a second motor 5, baffles 6 are fixedly connected to both sides of the upper end of the mounting frame 1, a first screening roller 11, a roller 12 and a second screening roller 14 are rotatably installed on the baffle 6 through a driving mechanism 2, cleaning brushes 3 are arranged on both sides of the first screening roller 11 and the second screening roller 14, a feed channel 8 is plugged into one end of the first screening roller 11, a feed hopper 9 and a fan 10 are fixedly installed on the feed channel 8, and a fan 15 is fixedly installed inside one end of the second screening roller 14.

[0025] Specifically, the device is used to remove impurities and separate crushed agricultural waste mulch film, and adopts an air sorting system for cyclic sorting. When in use, the shredded mulch film enters the first screening roller 11 through the feed hopper 9 and the feed channel 8, and the first screening roller 11, the drum 12 and the second screening roller 14 are driven to rotate by the driving mechanism 2 to perform rolling screening on the mulch film and impurities. At the same time, the blower 10 and the fan 15 are started to separate the plastic mulch film from impurities such as straw. The mulch film is adsorbed by the fan 15 and transported to the storage bin. The screened impurities fall onto the conveyor belt 4 and are transported to the designated collection location via the conveyor belt 4.

[0026] The above technical solution can effectively solve the problem of separation of impurities in ground film and straw, facilitate the subsequent recycling and reuse of ground film, and maximize waste utilization in a more energy-saving and efficient way, responding to the policies of energy conservation and emission reduction, waste treatment, and turning waste into treasure.

[0027] Furthermore, the driving mechanism 2 includes a first motor 21 and a rotating shaft 24. The first motor 21 is fixedly installed on the outer side of the baffle 6. The rotating shaft 24 is rotatably installed between the two baffles 6 on the same side. A transmission assembly is arranged between the first motor 21 and the rotating shaft 24. The transmission assembly includes a chain 23 and two sprockets 22. The two sprockets 22 are respectively fixedly connected to the output end of the first motor 21 and the shaft body of the rotating shaft 24. The chain 23 is meshingly sleeved on the two sprockets 22. Gears 25 are fixedly sleeved at both ends of the rotating shaft 24. Gear rings 13 are fixedly sleeved on both ends of the drum 12. The gear rings 13 are meshingly connected to the gears 25.

[0028] Specifically, the equipment is tilted, and the first motor 21 drives the drum 12, the first screening roller 11 and the second screening roller 14 to rotate to realize the transportation of materials. The baffles 6 on both sides are rotatably installed with rotating shafts 24, and gears 25 are sleeved at both ends of the two rotating shafts 24. The gears 25 on both sides are meshed and connected with the ring gear 13. The rotating shaft 24 and the gears 25 support the drum 12 and can also ensure the stability of the drum 12 during rotation.

[0029] Furthermore, a plurality of dividing plates 16 are arranged on the inner circumference of the drum 12 , and two ends of the drum 12 are fixedly connected to the first screening roller 11 and the second screening roller 14 , respectively.

[0030] Specifically, the dividing plate 16 is spirally shaped and equidistantly arranged on the inner wall of the drum 12. When the material moves into the drum 12, it will be divided into several portions by the dividing plate 16, thereby breaking up the material, avoiding material adhesion and accumulation, and improving separation effect and efficiency.

[0031] Furthermore, a support roller 7 is rotatably mounted on the inner side of the baffle 6 , and the support roller 7 is rollingly connected to the outer circumference of the first screening roller 11 and the second screening roller 14 .

[0032] Specifically, support rollers 7 are provided on both side baffles 6, and the support rollers 7 are symmetrically arranged at the lower positions on both sides of the first screening roller 11 and the second screening roller 14. On the one hand, the support rollers 7 can support and stabilize the first screening rollers 11 and the second screening rollers 14, and on the other hand, they can reduce the friction with the outer peripheral surfaces of the first screening rollers 11 and the second screening rollers 14, thereby improving the smoothness of the rotation of the first screening rollers 11 and the second screening rollers 14 and reducing equipment wear.

[0033] Furthermore, the cleaning brush 3 is detachably mounted on the mounting plate 31 , and the bottom of the mounting plate 31 is fixedly connected to the inner wall of the baffle 6 .

[0034] Specifically, the mounting plate 31 is arc-shaped, and the cleaning brush 3 is arranged on the top of the mounting plate 31. Cleaning brushes 3 are arranged on both sides of the first screening roller 11 and the second screening roller 14. The cleaning brushes 3 at the corresponding positions are correspondingly abutted against the first screening roller 11 and the second screening roller 14, and can clean impurities in the mesh of the first screening roller 11 and the second screening roller 14 to prevent clogging. By installing the bottom of the mounting plate 31 on the baffle 6, impurities can be prevented from flying out of the baffle 6, which plays a role in blocking impurities from flying out and ensuring that the impurities fall directly on the conveyor belt 4 or slide along the inner wall of the baffle 6 to the conveyor belt 4.

[0035] Example 2: Figures 1 to 9 As shown, based on Example 1, the following settings are also performed: The feed channel 8 is provided with a central shaft 17 inside, and a first spiral feed blade 18 is fixedly arranged around the central shaft 17, and one end of the first spiral feed blade 18 extends to the bottom of the feed hopper 9, and the other end of the first spiral feed blade 18 extends to the bottom of the fan 10. Since the fan 10 blows air into the feed channel 8, the wind will not only enter the fan 10, but also enter the feed hopper 9 along the feed channel 8 in the opposite direction, and will hinder the feeding when entering the feed hopper 9. By providing the first spiral feed blade 18, the material can be stably transported to the bottom of the fan 10. When the material is transported to the bottom of the fan 10, it can be blown by the fan 10 and enter the first screening roller 11. In addition, the first spiral feed blade 18 can also prevent the connection between the feed hopper 9 and the feed channel 8 from being blocked.

[0036] Furthermore, one end of the central axis 17 away from the feed hopper 9 extends to the outside of the feed channel 8, and the end of the central axis 17 is fixedly connected to a mounting plate 19, and a plurality of annular equidistantly arranged connecting rods 20 are fixedly connected to the mounting plate 19, and a rolling roller 26 is provided at the end of the connecting rod 20, and the rolling roller 26 is attached to the inner wall of the first screening roller 11.

[0037] This setting provides the following functions: First, the rotation of the first screening roller 11 can drive the rolling roller 26 to rotate, thereby rolling the material, so that impurities such as soil blocks are crushed to separate the impurities and the ground film, which is suitable for the situation where large soil blocks and ground films are bonded.

[0038] Second, the rotation of the first screening roller 11 can drive the central shaft 17 to rotate through the rolling roller 26 and the connecting rod 20, so that the first spiral feeding blade 18 rotates to transport the material. It should be noted that in addition to rolling friction, there is also sliding friction between the rolling roller 26 and the inner wall of the first screening roller 11, and the rolling roller 26 and the connecting rod 20 can drive the central shaft 17 to rotate through the sliding friction.

[0039] Third, the coaxiality of the feed channel 8 and the first screening roller 11 can be ensured, so that the first spiral feed blade 18 will not tilt, thereby running stably (when the first spiral feed blade 18 tilts, it will fit with the inner wall of the feed channel 8 to reduce the rotation speed, thereby hindering the feeding).

[0040] Fourthly, the rolling roller 26 can not only roll the material, but also push out the impurities stuck in the hole of the first screening roller 11, and cooperate with the cleaning brush 3 to clear the blockage.

[0041] Furthermore, the roller shaft of the rolling roller 26 at one end away from the feed channel 8 is fixedly connected with a second spiral feed blade 27. When the rolling roller 26 rotates, it can drive the second spiral feed blade 27 to move the material, and move the rolled material to the discharge end, thereby improving the efficiency of the entire process. In addition, when the second spiral feed blade 27 is attached to the inner wall of the first screening roller 11, since the second spiral feed blade 27 can push the material axially, the inner wall of the first screening roller 11 can also be scraped to reduce blockage. Even if a small half of a certain ground film fragment has been drilled out through the hole of the first screening roller 11, it can also be scraped by the second spiral feed blade 27 to re-enter the first screening roller 11.

[0042] Working principle of the present invention: When in use, start the equipment, so that the shredded ground film enters the first screening roller 11 through the feed hopper 9 and the feed channel 8. The roller 12, driven by the driving mechanism 2, drives the first screening roller 11 and the second screening roller 14 to rotate synchronously, and the ground film and impurities are rolled and screened. The ground film and impurities are separated by the action of the fan 10, and the ground film is adsorbed by the fan 15 and transported to the storage bin. The screened impurities fall onto the conveyor belt 4 and are transported to the designated collection location through the conveyor belt 4, so as to achieve separation of the ground film and impurities.

[0043] To sum up: this agricultural waste mulch film and impurity circulating air separation device drives the first screening roller 11, the drum 12 and the second screening roller 14 to rotate through the driving mechanism 2, and performs rolling screening on the mulch film and impurities. At the same time, the blower 10 and the fan 15 are started to separate the plastic mulch film from impurities such as straw. The mulch film is adsorbed by the fan 15 and transported to the storage bin. The screened impurities fall onto the conveyor belt 4 and are transported to the designated collection location through the conveyor belt 4. This can effectively solve the problem of the difficulty in separating mulch film from straw impurities, and facilitate the subsequent recycling and reuse of the mulch film. By setting a cleaning brush 3, impurities in the mesh of the first screening roller 11 and the second screening roller 14 can be cleaned to prevent clogging. By installing the bottom of the mounting plate 31 on the baffle 6, impurities can be prevented from flying out of the baffle 6, thereby playing a role in blocking impurities from flying out, ensuring that the impurities fall directly on the conveyor belt 4 or slide along the inner wall of the baffle 6 to the conveyor belt 4.

[0044] It should be noted that, in this article, relational terms such as first and second, etc. 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.

[0045] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for separating agricultural waste mulch film from impurities by circulating air, comprising a mounting frame (1), characterized in that: A conveyor belt (4) is arranged on the mounting frame (1), and the conveyor belt (4) is driven by a second motor (5). Baffles (6) are fixedly connected to both sides of the upper end of the mounting frame (1). A first screening roller (11), a roller (12) and a second screening roller (14) are rotatably mounted on the baffles (6) through a driving mechanism (2). Cleaning brushes (3) are arranged on both sides of the first screening roller (11) and the second screening roller (14). A feed channel (8) is plugged into one end of the first screening roller (11), and a feed hopper (9) and a fan (10) are fixedly mounted on the feed channel (8). A fan (15) is fixedly mounted inside one end of the second screening roller (14); A central shaft (17) is provided inside the feed channel (8), and a first spiral feed blade (18) is fixedly arranged around the central shaft (17), and one end of the first spiral feed blade (18) extends below the feed hopper (9), and the other end of the first spiral feed blade (18) extends below the fan (10); One end of the central shaft (17) away from the feed hopper (9) extends to the outside of the feed channel (8), and the end of the central shaft (17) is fixedly connected to a mounting plate (19), and a plurality of annular connecting rods (20) arranged equidistantly are fixedly connected to the mounting plate (19), and a rolling roller (26) is provided at the end of the connecting rod (20), and the rolling roller (26) is in contact with the inner wall of the first screening roller (11).

2. The device for separating agricultural waste mulch film and impurities by circulating air according to claim 1, characterized in that: The driving mechanism (2) comprises a first motor (21) and a rotating shaft (24); the first motor (21) is fixedly mounted on the outside of the baffle (6); the rotating shaft (24) is rotatably mounted between two baffles (6) on the same side; and a transmission assembly is provided between the first motor (21) and the rotating shaft (24).

3. The device for separating agricultural waste mulch film and impurities by circulating air as claimed in claim 2, characterized in that: The transmission assembly comprises a chain (23) and two sprockets (22), wherein the two sprockets (22) are respectively fixedly connected to the output end of the first motor (21) and the shaft body of the rotating shaft (24), and the chain (23) is meshingly sleeved on the two sprockets (22).

4. The device for separating agricultural waste mulch film and impurities by circulating air as claimed in claim 3, characterized in that: Gears (25) are fixedly sleeved on both ends of the rotating shaft (24), and gear rings (13) are fixedly sleeved on both ends of the drum (12), and the gear rings (13) are meshingly connected with the gears (25).

5. The device for separating agricultural waste mulch film and impurities by circulating air as claimed in claim 4, characterized in that: A plurality of dividing plates (16) are arranged on the inner circumference of the drum (12), and two ends of the drum (12) are fixedly connected to the first screening roller (11) and the second screening roller (14), respectively.

6. The device for separating agricultural waste mulch film and impurities by circulating air according to claim 1, characterized in that: A support roller (7) is rotatably mounted on the inner side of the baffle (6), and the support roller (7) is rollingly connected to the outer peripheral surfaces of the first screening roller (11) and the second screening roller (14).

7. The device for separating agricultural waste mulch film and impurities by circulating air according to any one of claims 1 to 6, characterized in that: The cleaning brush (3) is detachably mounted on a mounting plate (31), and the bottom of the mounting plate (31) is fixedly connected to the inner wall of the baffle (6).

8. The device for separating agricultural waste mulch film and impurities by circulating air as claimed in claim 1, characterized in that: A second spiral feeding blade (27) is fixedly connected to the roller shaft of the rolling roller (26) at one end away from the feeding channel (8).

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