A residual film pickup and recovery device based on electrostatic adsorption

Abstract

The application discloses a residual film pickup and recovery device based on electrostatic adsorption, which comprises a film lifting roller, a residual film lifting nail, a film withdrawing plate, a positive and negative copper ring, a touch switch, a touch device, a driving assembly, an electrostatic adsorber, a rack, an end plate assembly, a controller and the like, and is used for helping to lift and pick up residual film and withdraw residual film and adsorb residual film debris. The application has the following advantages: 1) the motor drives the driving assembly to help pick up or withdraw residual film, without the need of increasing an additional motor to drive for a long time, and only the control motor is started when needed, and the external power supply can be adjusted according to the actual situation, so that energy waste is avoided; 2) the rack on both sides of the film lifting roller has the same structure as the end plate assembly, the touch switch and the like can be installed on one side first, and the other side is reserved, so that the service life of the equipment is prolonged; 3) the residual film is pushed out of the residual film lifting nail through the film withdrawing plate, so that the influence of the residual film hanging on the residual film lifting nail on the subsequent lifting and picking up of residual film is avoided, and the residual film pickup and recovery efficiency is improved; and 4) the residual film debris is avoided from falling through electrostatic adsorption, and the recovery quality of the residual film is improved.

Description

Technical Field

[0001] This invention relates to the field of agricultural machinery technology, and in particular to a residual film picking and recycling device based on electrostatic adsorption, which is mainly used for picking and recycling agricultural film and residual film debris, and can also be used for picking and recycling residual film debris in other fields. Background Technology

[0002] Agricultural mulch film, also known as farmland cover film, is used to cover fields to increase soil temperature, retain soil moisture, maintain soil structure, prevent pests from attacking crops and diseases caused by certain microorganisms, and promote plant growth. Due to technological and cost reasons, the materials currently used for agricultural mulch film are mostly PVC plastic, rather than biodegradable films. This type of PVC plastic mulch film cannot degrade; leaving it in farmland not only causes serious soil pollution but also severely affects crop growth, so it must be recycled. The key to solving the problems of laborious and ineffective agricultural mulch film recycling lies in the design of the film-lifting device and the control of the old film winding process. The film-lifting device and its assembly are the core components of agricultural mulch film recycling technology.

[0003] Currently, agricultural film recycling and lifting devices on the market generally include a frame with a film-lifting shovel, guide rollers, and film-collecting rollers. In operation, a drive motor is connected to the guide rollers or film-collecting rollers, which drives the film-collecting rollers to roll up the film. This type of film recycling and lifting device has a complex structure and an additional, long-running drive mechanism for film recycling, which increases the overall cost of the device and wastes energy. Furthermore, this type of device produces a large amount of plastic debris during recycling, resulting in incomplete recycling, low efficiency, and continued soil pollution and impact on crop growth. Therefore, there is an urgent need to design a new type of residual film recycling and lifting device to solve these problems. Summary of the Invention

[0004] To address the problems of poor separation of residual film from stubble and soil, low recycling rate, and film fragments falling off existing residual film recycling devices on the market, as well as their complex structure and the need for an additional long-term operation of the drive mechanism, which increases costs and energy waste to a certain extent, and also results in a large amount of plastic debris falling off, an innovative residual film picking and recycling device based on electrostatic adsorption is proposed. The device mainly includes components such as a film lifting roller 1, a film unwinding plate 2, a drive assembly 3, a rotary drive shaft 4, an electrostatic adsorber 5, a frame 6, an end plate assembly 7, and a controller 8.

[0005] The present invention achieves the above-mentioned technical objectives through the following technical means:

[0006] A residual film picking and recycling device based on electrostatic adsorption mainly includes components such as a film-raising roller 1, a film-removing plate 2, a drive assembly 3, a rotary drive shaft 4, an electrostatic adsorber 5, a frame 6, an end plate assembly 7, and a controller 8. The film-raising roller 1 is made of steel with good electrical and magnetic conductivity, and its surface is provided with circumferential and linear arrays of residual film-raising nails 1-1 to help pick up the mulch film. A common film-removing plate 2 is installed on each row of residual film-raising nails 1-1. The film-removing plate 2 has holes I 2-1 and holes II 2-2 at both ends, which are slidably hinged to holes III 3-2-1 of the hinge rods 3-2 of the drive assembly 3 at both ends of the film-raising roller 1.

[0007] The drive assembly 3 includes a motor 3-1, a hinge link 3-2, and a drive link 3-3. The motor 3-1 is fixedly installed at the center of both ends of the inner side of the film-lifting roller 1. The drive link 3-3 passes through the drive assembly mounting holes 7-2 of the end plates and is connected to the hole V3-2-3 of the hinge link 3-2 through a pin, so as to transmit the motion of the motor 3-1 to the film-removing plate 2, so that the film-removing plate 2 can perform the film-removing action.

[0008] One end of the rotary drive shaft 4 is installed in the center hole 7-1 of the end plate flange, and the other end is installed in the rotary drive shaft connection hole on the frame 6.

[0009] The electrostatic adsorber 5 is fixedly installed on the inner wall of the film-forming roller 1 and is arranged circumferentially in a staggered manner with the drive assembly 3. Its positive and negative power lines are connected to an external power source through positive and negative copper rings 7-5 and elastic brushes 6-2.

[0010] The frame 6 has a rotary drive shaft connection hole, a contactor 6-1, and a flexible brush 6-2. External power is supplied through the flexible brush 6-2 and contacts the positive and negative copper rings 7-5. The acute angle between the upward fork of the frame 6 and the frame body is 42-45 degrees. Both the frame 6 and its upward fork have contactors 6-1, which are used to contact the touch switch 7-3 on the end plate at the corresponding position, causing the motor 3-1 of the drive assembly 3 to rotate and reverse, assisting in the removal of the residual film.

[0011] The controller 8 controls the drive assembly 3, motor 3-1, and electrostatic adsorber 5, etc., to help pick up and adsorb residual film, thereby improving the efficiency of residual film picking and recycling quality.

[0012] The end plate assembly 7 is located on both sides of the film-raising roller 1, and includes an end plate flange center hole 7-1, a drive component mounting hole 7-2, a touch switch 7-3, a hinge link bracket 7-4, and positive and negative copper rings 7-5. The positive and negative copper rings 7-5 have smooth and flat surfaces to ensure good contact with the elastic brush 6-2. The touch switch 7-3 is used to control the current reversal of the motor 3-1 of the drive component 3 to aid in film raising and lowering. One end of the hinge link bracket 7-4 is fixed to the end plate flange, and the other end is connected to the hole IV3-2-2 of the hinge link 3-2 via a pin. The positive and negative copper rings 7-5 on the end plate assembly 7 are connected to the electrostatic adsorber 5 and the motor 3-1 via conductive posts inside the end plate flange. The voltage can be adjusted using an external power supply according to specific conditions. Furthermore, the frame 6 on both sides of the film-raising roller 1 has the same structure as the end plate assembly 7, allowing the touch switch to be installed on only one side, with the other side as a spare, to extend service life.

[0013] The working process of the residual film picking and recycling device based on electrostatic adsorption of the present invention is as follows: At the start of operation, under the action of motor 3-1, the film-removing plate 2 close to the ground is pressed against the film-lifting roller 1. At this time, the motor 3-1 of the drive assembly 3 rotates to move the drive linkage 3-3 to both ends, that is, in an extended state, to assist in film lifting. As the film-lifting roller 1 rolls forward, when the touch switch 7-3 in the end plate assembly 7 at one end of the film-lifting roller 1 touches the contactor 6-1 of the frame 6, the original current direction of the corresponding motor 3-1 will change, causing the drive linkage 3-3 to move away from both ends, that is, to move towards the middle, changing the original extended state to a contracted state, thereby lifting the film-removing plate 2 to push the residual film out of the residual film lifting nail 1-1 of the film-lifting roller 1. Pulled by the tractor, as the film-lifting roller 1 continues to roll forward, the touch switch 7-3 in the end plate assembly 7 contacts another contactor 6-1 on the frame 6. At this time, under the action of the controller 8, the current of the motor 3-1 is reversed, changing the original shortened state to an extended state. This causes the film-removing plate 2 to adhere tightly to the outer surface of the film-lifting roller 1, facilitating the removal of residual film by the residual film lifting nail 1-1 from the field where it is obstructed by crop weed roots and stems. This process is repeated continuously, and the film-removing plate 2 can effectively assist the residual film lifting nail 1-1 in completing the removal of residual film and improve the efficiency of residual film removal.

[0014] The beneficial effects of this invention are mainly as follows: 1) As the film-lifting roller 1 rotates, the motor 3-1 drives the drive assembly to help pick up or remove the residual film, without the need for additional motors to drive for a long time. The control motor is only started when needed, avoiding energy waste; 2) During recycling, the residual film is pushed out of the residual film lifting nail 1-1 by the film-removing plate 2, avoiding the impact of the residual film hanging on the residual film lifting nail on the subsequent film lifting and picking, thus improving the efficiency of residual film picking and recycling; 3) Electrostatic adsorption prevents residual film debris from falling, thus improving the recycling quality of residual film. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of a residual film picking and recycling device based on electrostatic adsorption proposed in this invention.

[0016] Figure 2 This is a schematic diagram of the film-lifting roller and film-removing plate structure of a residual film picking and recycling device based on electrostatic adsorption proposed in this invention.

[0017] Figure 3 This is a schematic diagram of the internal wall motor and electrostatic adsorber of a residual film picking and recycling device based on electrostatic adsorption proposed in this invention.

[0018] Figure 4 This is a schematic diagram of the end plate flange structure of the end plate assembly of the residual film picking and recycling device based on electrostatic adsorption proposed in this invention, and a schematic diagram of the motor and the push plate structure fixed to the inner wall of the reel.

[0019] Figure 5 This is a schematic diagram of the hinge link of a residual film picking and recycling device based on electrostatic adsorption proposed in this invention.

[0020] The annotations in the attached figures are explained as follows:

[0021] 1. Film lifting roller; 1-1. Residual film lifting aid nail; 2. Film removal plate; 2-1. Hole I; 2-2. Hole II; 3. Drive assembly; 3-1. Motor; 3-2. Hinge link; 3-2-1. Hole III; 3-2-2. Hole IV; 3-2-3. Hole V; 3-3. Drive link; 4. Rotary drive shaft; 5. Electrostatic precipitator; 6. Frame; 6-1. Contactor; 6-2. Flexible brush; 7. End plate assembly; 7-1. End plate flange center hole; 7-2. Drive assembly mounting hole; 7-3. Touch switch; 7-4. Hinge link bracket; 7-5. Positive and negative copper rings; 8. Controller. Detailed Implementation

[0022] The implementation of the technical solutions in the embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The embodiments are only some embodiments of the present invention, and not all embodiments.

[0023] like Figure 1As shown, a residual film picking and recycling device based on electrostatic adsorption mainly includes a film-lifting roller 1, a drive assembly 3, a rotating shaft 4, an electrostatic adsorber 5, a frame 6, an end plate assembly 7, a controller 8, and other components. The film-lifting roller 1 is made of steel with good electrical and magnetic conductivity, and its surface is provided with a circumferential linear array of residual film lifting nails 1-1 to help pick up the mulch film. The film-removing plate 2 has holes I2-1 attached to it, and each horizontal row of residual film lifting nails is equipped with a film-removing plate 2 with holes I2-1. The film-removing plate 2 has holes II2-2 at both ends, which are slidably hinged to the elongated holes III3-2-1 of the hinge rods 3-2 of the drive assembly 3 at both ends of the film-lifting roller 1. The drive assembly 3 includes a motor 3-1, a hinge link 3-2, and a drive link 3-3. The motor 3-1 is fixedly installed at the center of both ends of the inner side of the film-lifting roller 1. The drive link 3-3 passes through the drive assembly mounting holes 7-2 of the end plates and is connected to the hole V3-2-3 of the hinge link 3-2 through a pin, so as to transmit the movement of the motor 3-2 to the film-removing plate 2, so that the film-removing plate 2 can remove the film.

[0024] One end of the rotary drive shaft 4 is installed in the center hole 7-1 of the end plate flange, and the other end is installed in the rotary drive shaft connection hole on the frame 6. The electrostatic adsorber 5 is installed on the inner wall of the film-lifting roller and is arranged circumferentially alternately with the drive assembly 3. Its positive and negative power lines are connected to the inner side of the positive and negative copper rings 7-5 through conductive posts, and the outer side of the copper rings 7-5 is connected to the external power supply through the elastic brush 6-2. The frame 6 has a rotary shaft connection hole, a contactor 6-1, and an elastic brush 6-2. The elastic brush 6-2 contacts the positive and negative copper rings 7-5 to ensure a good connection with the external power supply. The acute angle between the upward tail fork of the frame 6 and the frame body is 42-45 degrees. Both the frame 6 and the upward tail fork have contactors 6-1, which are used to contact the corresponding touch switches 7-3 on the end plate to cause the motor 3-1 of the drive assembly 3 to rotate and reverse, helping to remove the residual film.

[0025] The end plate assembly 7 includes an end plate flange center hole 7-1, a drive assembly mounting hole 7-2, a touch switch 7-3, a hinge link bracket 7-4, and positive and negative copper rings 7-5. The touch switch 7-3 controls the current reversal of the motor 3-1 of the drive assembly 3 to aid in film lifting and unlifting. One end of the hinge link bracket 7-4 is fixed to the end plate flange, and the other end is connected to hole IV3-2-2 of the hinge link 3-2 via a pin. The controller 8 controls the motor 3-1 of the drive assembly 3 and the electrostatic adsorber 5, etc., to assist in film lifting, picking up, and adsorbing residual film, improving residual film picking efficiency and recycling quality.

[0026] The working process of the electrostatic adsorption-based residual film pickup and recycling device of the present invention is as follows:

[0027] At the start of operation, under the action of motor 3-1, the film-removing plate 2, which is close to the ground, is pressed against the film-raising roller 1. At this time, the motor 3-1 of the drive assembly 3 rotates, causing the drive linkage 3-3 to move to both ends, i.e., to be in an extended state, to aid in film raising. As the film-raising roller 1 rolls forward, when the touch switch 7-3 in the end plate assembly 7 at one end of the film-raising roller 1 touches the contactor 6-1 of the frame 6, the original current direction of the corresponding motor 3-1 will change, causing the drive linkage 3-3 to move away from both ends, i.e., to move towards the middle, changing the original extended state to a contracted state, thereby lifting the film-removing plate 2 to push the residual film out of the residual film-raising nail 1-1 of the film-raising roller 1. Pulled by the tractor, as the film-lifting roller 1 continues to roll forward, the touch switch 7-3 in the end plate assembly 7 contacts another contactor 6-1 on the frame 6. At this time, under the action of the controller 8, the current of the motor 3-1 is reversed again, changing the original contracted state to an extended state. This causes the film-removing plate 2 to adhere tightly to the outer surface of the film-lifting roller 1, facilitating the removal of residual film by the residual film lifting nail 1-1, which is obstructed by crop weed roots and stems. This process repeats continuously, and the film lifting and removal of residual film is completed under the synergistic action of the residual film lifting nail 1-1 and the film-removing plate 2, improving the efficiency of residual film collection. Furthermore, the quality of residual film recycling is improved with the assistance of the electrostatic adsorber 5. The positive and negative copper rings 7-5 have smooth and flat surfaces to ensure good contact with the elastic brush 6-2. Both end plate assemblies 7 have positive and negative copper rings 7-5. Conductive leads are led out from the inside of the end plate flanges and connected to the electrostatic adsorber 5 and the motor 3-1. The voltage can be adjusted using an external power supply according to specific conditions. Furthermore, the frames 6 on both sides of the film-lifting roller 1 have the same structure as the end plate assemblies 7, allowing for the installation of a touch switch on only one side, with the other side as a spare, to extend service life.

[0028] like Figure 2 As shown, the film-lifting roller 1 is made of steel with good electrical and magnetic conductivity, and its surface is provided with residual film lifting nails 1-1 in a circumferential linear array design to help pick up the film; each row of residual film lifting nails 1-1 is equipped with a common film-removing plate 2 with a hole I2-1. The film-removing plate 2 has holes I2-1 on it, and holes II2-2 at both ends of the film-removing plate 2, which are slidably hinged to holes III3-2-1 of the hinge rods 3-2 of the drive components 3 at both ends of the film-lifting roller 1.

[0029] like Figure 3 The electrostatic adsorber 5 is fixedly installed on the inner wall of the film-forming roller 1 and is arranged circumferentially in a staggered manner with the drive assembly 3. Its positive and negative power lines are connected to an external power source through conductive posts, positive and negative copper rings 7-5, and elastic brushes 6-2.

[0030] The embodiments described above are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments. Any obvious improvements, substitutions or modifications that can be made by those skilled in the art without departing from the essence of the present invention shall fall within the protection scope of the present invention.

Claims

1. A residual film pickup recovery device based on electrostatic adsorption, mainly comprising a film starting roller (1), a film returning plate (2), a driving assembly (3), a rotary driving shaft (4), an electrostatic adsorber (5), a frame (6), an end plate assembly (7), a controller (8) component, characterized in that, The film-rolling roller (1) is made of steel material with good electric and magnetic conductivity, and the surface is provided with residual film assisting pins (1-1) arranged in circumferential and linear arrays. Each row of the residual film assisting pins (1-1) is provided with a shared film-removing plate (2). The film-removing plate (2) is provided with holes I (2-1), and the two ends of the film-removing plate (2) are provided with holes II (2-2) which are slidably connected with the holes III (3-2-1) of the hinge connecting rods (3-2) of the driving assemblies (3) at the two ends of the film-rolling roller (1). The working process of the residual film picking and recovering device is as follows: when starting to work, the film-removing plate (2) close to the ground is tightly attached to the film-rolling roller (1) under the action of the motor (3-1), and at this time, the motor (3-1) of the driving assembly (3) makes the driving connecting rod (3-3) move to the two ends by rotating, i.e. in the elongated state, so as to help the film-rolling. With the forward rolling of the film-rolling roller (1), when the touch switch (7-3) in the end plate assembly (7) at one end of the film-rolling roller (1) touches the toucher (6-1) of the frame (6), the original current direction of the corresponding motor (3-1) is changed, the driving connecting rod (3-3) moves away from the two ends, i.e. moves to the middle, the original elongated state changes to the contracted state, and then the film-removing plate (2) is lifted to push the residual film out of the residual film assisting pins (1-1) of the film-rolling roller (1). Under the traction of the tractor, with the continuous forward rolling of the film-rolling roller (1), the touch switch (7-3) in the end plate assembly (7) touches the other toucher (6-1) of the frame (6), at this time, the current of the motor (3-1) is reversed again under the action of the controller (8), the original contracted state changes to the elongated state, and then the film-removing plate (2) is tightly attached to the outer surface of the film-rolling roller (1), so as to facilitate the residual film assisting pins (1-1) to pick up the residual film in the field under the obstruction of the crop weed stems. In this way, the film-rolling and picking of the residual film are completed under the synergistic effect of the residual film assisting pins (1-1) and the film-removing plate (2), and the residual film picking efficiency is improved, and the residual film recovery quality is improved under the synergistic adsorption of the electrostatic adsorber (5).

2. The electrostatic adhesion based residual film pickup and recovery device of claim 1, wherein, The driving assembly (3) comprises a motor (3-1), a hinge connecting rod (3-2) and a driving connecting rod (3-3). The motor (3-1) is fixedly installed at the center of the two ends of the inner side of the film-rolling roller (1). The driving connecting rod (3-3) passes through the driving assembly mounting hole (7-2) of the two end plates and is connected with the hole V (3-2-3) of the hinge connecting rod (3-2) through a pin shaft.

3. The electrostatic adhesion based residual film pickup and recovery device of claim 1, wherein, One end of the rotating driving shaft (4) is installed in the end plate flange center hole (7-1), and the other end is installed in the rotating driving shaft connecting hole of the frame (6).

4. The electrostatic adhesion based residual film pickup and recovery device of claim 1, wherein, The electrostatic adsorber (5) is fixedly installed on the inner wall of the film-rolling roller (1) and is arranged in a circumferential staggered manner with the driving assembly (3). The positive and negative power supply lines are connected with the external power supply through the positive and negative copper rings (7-5) and the elastic brushes (6-2).

5. The electrostatic adhesion based residual film pickup and recovery device of claim 3, wherein, The frame (6) has a rotating drive shaft connecting hole, a toucher (6-1) and an elastic brush (6-2). An external power source is in contact with positive and negative copper rings (7-5) through the elastic brush (6-2). The acute angle between the upward fork of the frame (6) and the main body of the frame is 42-45 degrees. The frame (6) and its upward fork are both provided with a toucher (6-1).

6. The electrostatic adhesion based residual film pickup and recovery device of claim 1, wherein, The controller (8) controls the driving assembly (3), the motor (3-1) and the electrostatic adsorber (5).

7. The electrostatic adhesion based residual film pickup and recovery device of claim 1, wherein, The end plate assembly (7) comprises an end plate flange center hole (7-1), a driving assembly mounting hole (7-2), a touch switch (7-3), a hinge connecting rod support (7-4) and positive and negative copper rings (7-5). One end of the hinge connecting rod support (7-4) is fixed to the end plate flange, and the other end is connected to the hole IV (3-2-2) of the hinge connecting rod (3-2) through a pin shaft. The inner side of the positive and negative copper rings (7-5) supplies power to the motor (3-1) and the electrostatic adsorber (5) through a conductive column.

8. The electrostatic adhesion based residual film pickup and recovery apparatus as claimed in claim 1, wherein, The surface of the positive and negative copper rings (7-5) is smooth and flat, and is in good contact with the elastic brush (6-2).

9. The electrostatic adhesion based residual film pickup and recovery device of claim 1, wherein, Both sides of the end plate assembly (7) are provided with positive and negative copper rings (7-5). The inner side of the end plate flange is connected to the motor (3-1) through a conductive column to supply power to the electrostatic adsorber (5). The voltage can be adjusted according to the actual situation. The structures of the frame (6) and the end plate assembly (7) on both sides of the film forming roller (1) are the same. The touch switch can be installed on one side, and the other side is reserved for standby to increase the service life of the equipment.

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