Farmland soil pollution abatement and remediation device

Abstract

The invention provides a farmland soil pollution abatement and remediation device, and relates to the technical field of soil pollution abatement and remediation device.The farmland soil pollution abatement and remediation device comprises a plowing machine, a front harvesting assembly is arranged on the front side of the plowing machine, a fixed supporting frame is installed on the rear side of the plowing machine, and two fixed discs are installed on the two sides of the rear end of the fixed supporting frame; at least two second ploughing cutters and at least two first ploughing cutters are fixedly installed on the two sides of each fixed disc, a driving motor on the fixed supporting frame is started to drive a driving shaft to rotate through two first gears, the driving shaft rotates to drive the two fixed discs to rotate, and the two fixed discs rotate to drive the second ploughing cutters and the first ploughing cutters on the two sides to rotate; the second plowing knife and the first plowing knife rotate to dig farmland soil, when the second plowing knife and the first plowing knife rotate to make contact with the agent discharging bin, the agent in the agent discharging bin can be driven to fall, the falling agent enters the farmland soil, and the soil treatment and remediation capacity can be improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of soil pollution treatment and remediation devices. More specifically, it particularly relates to a farmland soil pollution treatment and remediation device. Background Art

[0002] In the field of farmland soil treatment and ploughing, current technical means have many drawbacks, seriously affecting the soil remediation effect, ploughing efficiency, and resource utilization rate.

[0003] Traditional soil remediation agent spraying equipment generally has the problem of "surface application without penetration into the soil". Most of these devices can only spray the agent on the soil surface, and it is difficult for the agent to penetrate deep into the soil, resulting in the agent being unable to fully contact the pollutants in the soil and play a remediation role. This leads to low utilization rate of the agent, causing waste of resources while being unable to effectively improve the soil treatment and remediation ability.

[0004] Existing ploughing equipment has limited capabilities in turning the soil and breaking up the soil. The shape design of conventional ploughing tools is not reasonable enough, making it difficult to fully break up and plough soils of different textures. Especially for relatively sticky soils, the ploughing effect is not good, and it is unable to effectively improve the soil structure, affecting the growth environment of crops.

[0005] In terms of agent discharge and control, traditional equipment lacks a precise and efficient agent discharge mechanism. There is no reasonable structural design to achieve the coordination of the agent and the ploughing action, and it is impossible to accurately control the discharge position and discharge amount of the agent according to the ploughing depth and soil conditions. It is easy to have the situation of agent waste or insufficient dosage, and it is also difficult to ensure the uniform distribution of the agent in the soil.

[0006] Regarding the improvement of soil air permeability, existing technical means are relatively scarce. Especially for sticky soils, there is a lack of effective methods to improve their air permeability to promote the penetration of water and agents and meet the oxygen demand of crop roots.

[0007] When dealing with soil treatment in arid regions, traditional equipment cannot take into account both water replenishment and agent application. The soil in arid regions lacks water. When conducting soil remediation, if water cannot be replenished simultaneously, it will not only affect the dissolution of the remediation agent and the activity of microorganisms, but may also cause surface runoff and lead to the loss of the agent, further reducing the remediation effect.

[0008] At the same time, traditional farmland operation equipment usually separates functions such as agent spraying and ploughing, with cumbersome operations and low efficiency. It cannot complete multiple tasks in one operation, increasing labor and time costs.

[0009] In summary, the existing farmland soil treatment and plowing technologies have obvious deficiencies in aspects such as the depth of the agent entering the soil, the ability to break up the soil, the precise discharge control of the agent, the improvement of soil air permeability, the adaptability to operations in arid areas, and the operation efficiency, and it is difficult to meet the requirements of modern agriculture for efficient soil treatment, precise repair, and comprehensive improvement of the soil. Summary of the Invention

[0010] To solve the above technical problems, the present invention provides a farmland soil pollution treatment and repair device to solve the above problems.

[0011] A farmland soil pollution treatment and repair device includes a plowing machine. A front harvesting component is arranged on the front side of the plowing machine. A fixed support frame is installed on the rear side of the plowing machine. Two fixed disks are installed on both sides of the rear end of the fixed support frame. At least two second plowing blades and first plowing blades are fixedly installed on both sides of each fixed disk. Agent discharge bins are fixedly installed on both sides of the front end of the fixed support frame. Two side inflation balloons are fixedly installed on the front side of each agent discharge bin. Discharge components are arranged inside and at the bottom of each agent discharge bin. When the second plowing blades and the first plowing blades rotate and contact the discharge components at the bottom of the agent discharge bin, the agent inside the agent discharge bin drops.

[0012] Preferably, a medicine pipe is fixedly installed on the top of each agent discharge bin. Each medicine pipe is connected to the medicine bin inside the plowing machine. An upper partition board is fixedly installed inside each agent discharge bin. A lower discharge rack is fixedly installed at the bottom end of each agent discharge bin. The two discharge components are respectively fixed at the openings below the upper partition board and the lower discharge rack. Two arc-shaped blocking plates are fixedly installed on the inner wall of each agent discharge bin. The two arc-shaped blocking plates are vertically and horizontally staggered inside the agent discharge bin. The exhaust holes on the back of each side inflation balloon are located inside the agent discharge bin.

[0013] Preferably, each discharge component further includes two flip plates, a second gear, and a crawler. A rotating shaft rod is rotatably installed between each flip plate and the bottom of the lower discharge rack and the upper partition board. The ends of the two rotating shaft rods protrude through the outside of the agent discharge bin. Second gears are fixedly installed at the ends of the rotating shaft rods protruding outside the agent discharge bin. The crawler is installed between the two second gears. Two springs are fixedly installed between the upper part of each flip plate and the lower discharge rack and the upper partition board. Outer protruding rods are fixedly installed on the side walls of the two flip plates located below the lower discharge rack.

[0014] Preferably, an upper guard plate is fixedly installed above the fixed support frame, a fixed bin is fixedly installed in the middle of the rear end of the fixed support frame, a driving motor is fixedly installed inside the fixed bin, a driving shaft is rotatably installed through the inside of the fixed support frame below the driving motor, first gears are fixedly installed on the outer ring of the driving shaft and the end of the driving motor, and the two first gears are meshed with each other up and down. The ends of each second tilling blade and the first tilling blade are both bent in a "J" shape, a razor is fixedly installed on the side wall of each second tilling blade and the first tilling blade near the end, an inclined groove is formed above each razor, and a duckbill bracket is fixedly installed on the side wall of each second tilling blade and the first tilling blade below the razor. At least two spray pipes are fixedly installed at the end of each duckbill bracket.

[0015] Preferably, two first gears are fixedly installed on the surface of the driving shaft. The two first gears are both located between the two fixed disks, and the two first gears are both connected to each second tilling blade and the first tilling blade on both sides. Two air charging chambers and two liquid chambers are arranged inside each first gear. An air pipe is connected between the two air charging chambers and the first tilling blade, and a water pipe is connected between the two liquid chambers and the second tilling blade.

[0016] Compared with the prior art, the present invention has the following beneficial effects: In the present invention, when in use, the tiller moves in the farmland, driving the front harvesting assembly to move forward. The front harvesting assembly first clears the plants in the farmland. The movement of the tiller drives the rear fixed support frame to move. The driving motor on the fixed support frame starts to drive the driving shaft to rotate through the two first gears. The rotation of the driving shaft drives the two fixed disks to rotate. The rotation of the two fixed disks drives the second tilling blades and the first tilling blades on both sides to rotate. The rotation of the second tilling blades and the first tilling blades will dig the farmland soil. When the second tilling blades and the first tilling blades rotate and contact the medicament discharge bin, they will drive the medicament inside the medicament discharge bin to fall. The falling medicament enters the farmland soil, which can improve the ability of soil treatment and restoration.

[0017] In the present invention, when the second tillage blade and the first tillage blade rotate, they will contact the side inflation airbag. At this time, the side inflation airbag is squeezed by the force, and the air inside the side inflation airbag is discharged into the medicament discharge bin. At this time, the air pressure in the medicament discharge bin increases. When the second tillage blade and the first tillage blade leave the side inflation airbag, the side inflation airbag is inflated again through the air inlet hole at the bottom. Since the lower discharge rack at the bottom of the medicament discharge bin is funnel-shaped, when the medicament falls from the upper partition board, it will fall at the outlet of the lower discharge rack. When the second tillage blade and the first tillage blade continue to rotate to open the discharge assembly at the bottom of the lower discharge rack, due to the relatively high air pressure in the medicament discharge bin, the medicament discharge bin will quickly spray the medicament downward. At the same time, the second tillage blade and the first tillage blade turn over the farmland soil, and the medicament can penetrate into the soil. When turning over the soil, the second tillage blade and the first tillage blade break up the soil, and the repair medicament is accurately sprayed to the bottom of the plow furrow (5-20 cm), solving the problem of "surface application without soil penetration" of traditional spraying equipment, and the utilization rate of the medicament is increased by 40%.

[0018] In the present invention, the medicament bin of the tillage machine belongs to the repair medicament into the medicament discharge bin through the medicament pipe. The second tillage blade and the first tillage blade rotate to the front side of the turning plate below the lower discharge rack. Continuing to rotate will drive the two turning plates to rotate through the two convex rods. Both turning plates rotate outside the two rotating shaft rods. At the same time, the rotation of the two turning plates will drive the upper springs to stretch. The rotation of the turning plate drives the rotating shaft rod to rotate, and the rotation of the rotating shaft rod drives the second gear to rotate. The second gear rotates through the track to drive the two turning plates below the upper partition board to rotate. At this time, the lower part of the upper partition board is opened, and the repair medicament falls from the upper partition board. During the falling process of the repair medicament, it contacts the two arc-shaped baffle plates, and the two arc-shaped baffle plates slow down the falling speed of the medicament. When the medicament falls to the lower discharge rack, the two turning plates below the lower discharge rack are controlled by the springs to close. By using the track to jointly control the two turning plates below the upper partition board and the lower discharge rack, they can be opened simultaneously without additional power. And when the two lower turning plates are closed, the two turning plates below the upper partition board are closed synchronously, playing a role in controlling the amount of medicament. The two arc-shaped baffle plates in the medicament discharge bin can prevent the medicament from falling too fast and directly falling below the lower discharge rack, avoiding repeated dosing.

[0019] In the present invention, when the second tillage blade and the first tillage blade rotate simultaneously, they will turn over the farmland soil, and both the second tillage blade and the first tillage blade are in a curved "J" shape. Therefore, when turning over the soil, the soil can be better broken up. At the same time, the razors on the side walls of the second tillage blade and the first tillage blade can turn out the relatively sticky soil, thereby improving the soil turning ability and the ability to break up the soil.

[0020] In the present invention, an air pump is provided inside the inflatable chamber. When the second tillage blade and the first tillage blade break up the soil, the inflatable chamber conveys high-pressure gas into the first tillage blade through the drive shaft. The gas passes through the inside of the first tillage blade and the duckbill frame, and multiple spray pipes at the end of the duckbill frame squeeze and eject the gas. The high-pressure gas is sprayed onto the turned-up soil, and the air flow can instantly disturb the soil microstructure to form "cavitation channels", creating conditions for subsequent water and chemical agent penetration. It is especially suitable for improving the air permeability of viscous soil. A water pump is provided inside the liquid chamber, and water (which can be replaced with a chemical agent) is filled in the liquid chamber in advance. The liquid chamber pumps water into the second tillage blade through the water pipe, and then sprays it out through the duckbill frame and spray pipes at the end of the second tillage blade. The liquid seeps into the tillage layer along the blade surface and quickly mixes with the turned-up raw soil, avoiding the loss of chemical agents caused by surface runoff. For arid regions, water can be supplemented synchronously to promote the dissolution of the repair agent and the activity of microorganisms. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic structural diagram of the tillage machine of the present invention; Figure 2 is a schematic structural diagram of the second tillage blade of the present invention; Figure 3 is a schematic structural diagram of the fixed support frame of the present invention; Figure 4 is a schematic structural diagram of the drive shaft of the present invention; Figure 5 is a schematic structural diagram of the first tillage blade of the present invention; Figure 6 is the present invention Figure 5 enlarged structural diagram at position A; Figure 7 is a schematic structural diagram of the liquid chamber of the present invention; Figure 8 is a schematic structural diagram of the lower discharge frame of the present invention; Figure 9 is a schematic structural diagram of the discharge assembly of the present invention.

[0022] In the figure, the corresponding relationship between the component names and the drawing reference numbers is as follows: 1, tillage machine; 11, front harvesting assembly; 12, fixed support frame; 13, fixed chamber; 14, drive motor; 15, drive shaft; 16, first gear; 17, fixed disk; 18, first tillage blade; 2, razor; 21, inclined groove; 22, duckbill frame; 23, spray pipe; 24, inflatable chamber; 25, air pipe; 26, liquid chamber; 27, water pipe; 28, second tillage blade; 29, chemical agent pipe; 3, chemical agent discharge chamber; 31, upper partition board; 32, arc-shaped baffle; 33, side air bag; 34, lower discharge frame; 4, discharge assembly; 41, rotating shaft rod; 42, second gear; 43, crawler belt; 44, spring; 45, turning plate; 46, outer convex rod; 47, upper guard plate. DETAILED DESCRIPTION OF THE INVENTION

[0023] The following further describes in detail the embodiments of the present invention in conjunction with the accompanying drawings and embodiments. The following embodiments are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0024] Please refer to Figures 1-9 , the present invention provides a device for treating and repairing polluted farmland soil, including a tiller 1. A front harvesting assembly 11 is arranged on the front side of the tiller 1. A fixed support frame 12 is installed on the rear side of the tiller 1. Two fixed disks 17 are installed on both sides of the rear end of the fixed support frame 12. An upper guard plate 47 is fixedly installed above the fixed support frame 12. A fixed bin 13 is fixedly installed in the middle of the rear end of the fixed support frame 12. A driving motor 14 is fixedly installed inside the fixed bin 13. A driving shaft 15 is rotatably installed through the inside of the fixed support frame 12 below the driving motor 14. A first gear 16 is fixedly installed on the outer ring of the driving shaft 15 and the end of the driving motor 14, and the two first gears 16 are meshed up and down. An upper guard plate 47 is fixedly installed above the fixed support frame 12. A fixed bin 13 is fixedly installed in the middle of the rear end of the fixed support frame 12. A driving motor 14 is fixedly installed inside the fixed bin 13. A driving shaft 15 is rotatably installed through the inside of the fixed support frame 12 below the driving motor 14. A first gear 16 is fixedly installed on the outer ring of the driving shaft 15 and the end of the driving motor 14, and the two first gears 16 are meshed up and down. Each fixed disk 17 is fixedly sleeved outside the driving shaft 15. At least two second tilling blades 28 and first tilling blades 18 are fixedly installed on both sides of each fixed disk 17. Two medicine discharge bins 3 are fixedly installed on both sides of the front end of the fixed support frame 12. Two side air bags 33 are fixedly installed on the front side of each medicine discharge bin 3. A discharge assembly 4 is arranged inside and at the bottom of each medicine discharge bin 3. When the second tilling blades 28 and the first tilling blades 18 rotate and contact the discharge assembly 4 at the bottom of the medicine discharge bin 3, the medicine inside the medicine discharge bin 3 drops. When in use, the tiller 1 moves in the farmland, driving the front harvesting assembly 11 to move forward. The front harvesting assembly 11 first clears the plants in the farmland. The tiller 1 moves to drive the rear fixed support frame 12 to move. The driving motor 14 on the fixed support frame 12 starts to drive the driving shaft 15 to rotate through the two first gears 16. The driving shaft 15 rotates to drive the two fixed disks 17 to rotate. The two fixed disks 17 rotate to drive the second tilling blades 28 and the first tilling blades 18 on both sides to rotate. The second tilling blades 28 and the first tilling blades 18 rotate to excavate the farmland soil. And when the second tilling blades 28 and the first tilling blades 18 rotate and contact the medicine discharge bin 3, it will drive the medicine inside the medicine discharge bin 3 to fall. The falling medicine enters the farmland soil, which can improve the ability of soil treatment and repair.

[0025] In this embodiment, as Figure 3 , Figure 4and Figure 8 At the top of each chemical agent discharge bin 3, a chemical agent pipe 29 is fixedly installed, and each chemical agent pipe 29 is connected to the chemical agent bin inside the tiller 1. Inside each chemical agent discharge bin 3, an upper partition plate 31 is fixedly installed. At the bottom end of each chemical agent discharge bin 3, a lower discharge rack 34 is fixedly installed. Two discharge assemblies 4 are respectively fixed at the openings below the upper partition plate 31 and the lower discharge rack 34. The exhaust holes on the back of each side inflation airbag 33 are located inside the chemical agent discharge bin 3, and an air inlet hole is provided below the side inflation airbag 33. One-way air valves are provided in the holes on the back and bottom of the side inflation airbag 33. During use, when the second tilling blade 28 and the first tilling blade 18 rotate, they will contact the side inflation airbag 33. At this time, the side inflation airbag 33 is squeezed by the force. After the side inflation airbag 33 is squeezed, the air inside it is discharged into the chemical agent discharge bin 3. At this time, the air pressure in the chemical agent discharge bin 3 increases. When the second tilling blade 28 and the first tilling blade 18 leave the side inflation airbag 33, the side inflation airbag 33 is inflated again through the air inlet hole at the bottom. Since the lower discharge rack 34 at the bottom of the chemical agent discharge bin 3 is funnel-shaped, when the chemical agent falls from the upper partition plate 31, it will land at the outlet of the lower discharge rack 34. When the second tilling blade 28 and the first tilling blade 18 continue to rotate to open the discharge assembly 4 at the bottom of the lower discharge rack 34, due to the relatively high air pressure in the chemical agent discharge bin 3, the chemical agent discharge bin 3 will quickly spray the chemical agent downward. At the same time, the second tilling blade 28 and the first tilling blade 18 turn over the farmland soil, and the chemical agent can penetrate into the soil. When the second tilling blade 28 and the first tilling blade 18 break up the soil during tilling, the repair chemical agent is accurately sprayed to the bottom of the furrow (5 - 20 cm), solving the problem of "surface application without soil penetration" of traditional spraying equipment, and the utilization rate of the chemical agent is increased by 40%.

[0026] In this embodiment, as Figure 3 、 Figure 4 、 Figure 8 and Figure 9, two arc-shaped baffles 32 are fixedly installed on the inner wall of each chemical agent discharge bin 3. The two arc-shaped baffles 32 are distributed in a vertical and horizontal staggered manner inside the chemical agent discharge bin 3. Each discharge assembly 4 further includes two turning plates 45, a second gear 42 and a crawler 43. A rotating shaft rod 41 is rotatably installed between each turning plate 45 and the bottom of the lower discharge rack 34 and the upper partition plate 31. The ends of the two rotating shaft rods 41 protrude through the outside of the chemical agent discharge bin 3. Second gears 42 are fixedly installed at the ends of the rotating shaft rods 41 protruding outside the chemical agent discharge bin 3. The crawler 43 is installed between the two second gears 42. Two springs 44 are fixedly installed between the upper part of each turning plate 45 and the lower discharge rack 34 and the upper partition plate 31. Outer convex rods 46 are fixedly installed on the side walls of the two turning plates 45 located below the lower discharge rack 34. During use, the chemical agent bin of the rotary tiller 1 injects the repair chemical agent into the chemical agent discharge bin 3 through the chemical agent pipe 29. The second rotary tilling blade 28 and the first rotary tilling blade 18 rotate to the front side of the turning plate 45 below the lower discharge rack 34. Continuing to rotate will drive the two turning plates 45 to rotate through the two outer convex rods 46. Both turning plates 45 rotate outside the two rotating shaft rods 41. At the same time, the rotation of the two turning plates 45 will drive the upper springs 44 to stretch. The rotation of the turning plate 45 drives the rotating shaft rod 41 to rotate. The rotation of the rotating shaft rod 41 drives the second gear 42 to rotate. The rotation of the second gear 42 drives the two turning plates 45 below the upper partition plate 31 to rotate through the crawler 43. At this time, the lower part of the upper partition plate 31 is opened, and the repair chemical agent falls from the upper partition plate 31. The repair chemical agent contacts the two arc-shaped baffles 32 during the falling process. The two arc-shaped baffles 32 slow down the falling speed of the chemical agent. When the chemical agent falls to the lower discharge rack 34, the two turning plates 45 below the lower discharge rack 34 are controlled to close by the springs 44. By using the crawler 43 to jointly control the two turning plates 45 below the upper partition plate 31 and the lower discharge rack 34, they can be opened simultaneously without additional power. And when the two lower turning plates 45 are closed, the two turning plates 45 below the upper partition plate 31 are closed synchronously, playing a role in controlling the amount of chemical agent. The two arc-shaped baffles 32 in the chemical agent discharge bin 3 can prevent the chemical agent from falling too fast and directly falling below the lower discharge rack 34, avoiding repeated dosing.

[0027] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 5 and Figure 6, the ends of each second tillage knife 28 and the first tillage knife 18 are both bent in a "J" shape. On the side walls of each second tillage knife 28 and the first tillage knife 18 near the ends, razors 2 are fixedly installed. Above each razor 2, an inclined groove 21 is provided. On the side walls of each second tillage knife 28 and the first tillage knife 18 below the razors 2, duckbill frames 22 are fixedly installed. At the end of each duckbill frame 22, at least two spray pipes 23 are fixedly installed. When in use, the second tillage knife 28 and the first tillage knife 18 rotate simultaneously to turn over the farmland soil. Moreover, both the second tillage knife 28 and the first tillage knife 18 are bent in a "J" shape. Therefore, when turning over the soil, the soil can be better broken up. At the same time, the razors 2 on the side walls of the second tillage knife 28 and the first tillage knife 18 can turn out the more viscous soil. The inclined groove 21 provided on the razor 2 can help the discharge of the soil, thereby improving the soil-turning ability and the ability to break up the soil.

[0028] In this embodiment, as Figure 2 , Figure 3 , Figure 5 , Figure 6 and Figure 7 , two first gears 16 are fixedly installed on the surface of the drive shaft 15. Both of the two first gears 16 are located between the two fixed disks 17, and both of the two first gears 16 are connected to each second tillage knife 28 and the first tillage knife 18 on both sides. Inside each first gear 16, two air chambers 24 and two liquid chambers 26 are provided. An air pipe 25 is connected between the two air chambers 24 and the first tillage knife 18, and a water pipe 27 is connected between the two liquid chambers 26 and the second tillage knife 28. When in use, an air pump is provided inside the air chamber 24. When the second tillage knife 28 and the first tillage knife 18 break up the soil, the air chamber 24 conveys high-pressure gas into the first tillage knife 18 through the drive shaft 15. The gas passes through the inside of the first tillage knife 18 and the duckbill frame 22, and the multiple spray pipes 23 at the end of the duckbill frame 22 squeeze and spray out the gas. The high-pressure gas sprays onto the turned-out soil, and the airflow can instantly disturb the soil microstructure to form an "aerosol erosion channel", creating conditions for the subsequent penetration of water and agents, especially suitable for improving the air permeability of viscous soil. A water pump is provided inside the liquid chamber 26, and water (which can be replaced with an agent) is filled in the liquid chamber 26 in advance. The liquid chamber 26 pumps the water into the second tillage knife 28 through the water pipe 27, and then sprays it out through the duckbill frame 22 and the spray pipes 23 at the end of the second tillage knife 28. The liquid seeps into the tillage layer along the knife surface and quickly mixes with the turned-up raw soil, avoiding the loss of the agent caused by surface runoff. For arid areas, water can be supplemented synchronously to promote the dissolution of the repair agent and the activity of microorganisms.

[0029] The embodiments of the present invention are given for purposes of illustration and description, and are not exhaustive or limit the invention to the disclosed forms. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are chosen and described in order to best explain the principles of the invention and its practical application, and to enable those of ordinary skill in the art to understand the invention so as to design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A farmland soil pollution control and restoration device, comprising a tiller (1), wherein a front harvesting assembly (11) is arranged at the front side of the tiller (1), and characterized in that: A fixed support frame (12) is installed on the rear side of the tiller (1), and a drive shaft (15) is rotatably installed inside the rear end of the fixed support frame (12). Two fixed disks (17) are fixedly sleeved on the surface of the drive shaft (15), and at least two second tilling knives (28) and a first tilling knife (18) are fixedly installed on both sides of each of the fixed disks (17). A medicine discharge bin (3) is fixedly installed on both sides of the front end of the fixed support frame (12), and two side inflatable bags (33) are fixedly installed on the front side of each of the medicine discharge bins (3). A discharge component (4) is provided inside and at the bottom of each of the medicine discharge bins (3). When the second tilling knife (28) and the first tilling knife (18) rotate and contact the discharge component (4) at the bottom of the medicine discharge bin (3), the medicine inside the medicine discharge bin (3) falls out.

2. A farmland soil pollution control and restoration device as claimed in claim 1, characterized in that: A medicine pipe (29) is fixedly mounted on the top of each medicine discharge bin (3), each medicine pipe (29) is connected to the medicine bin in the tiller (1), and an upper partition plate (31) is fixedly mounted inside each medicine discharge bin (3).

3. A farmland soil pollution control and restoration device as claimed in claim 2, characterized in that: A lower discharge rack (34) is fixedly mounted at the bottom end of each of the medicine discharge bins (3), and two discharge assemblies (4) are respectively fixed at openings below the upper partition plate (31) and the lower discharge rack (34).

4. A farmland soil pollution control and restoration device as claimed in claim 3, characterized in that: Two arc-shaped baffles (32) are fixedly mounted on the inner wall of each of the medicine discharge bins (3); the two arc-shaped baffles (32) are staggered vertically and horizontally inside the medicine discharge bin (3); and the exhaust holes on the back of each of the side inflatable air bags (33) are located inside the medicine discharge bin (3).

5. The farmland soil pollution control and restoration device according to claim 1, characterized in that: Each of the discharge components (4) further comprises two flip plates (45), a second gear (42) and a crawler belt (43); a rotating shaft (41) is rotatably mounted between each of the flip plates (45) and the bottom of the lower discharge frame (34) and the upper partition plate (31); the ends of the two rotating shafts (41) protrude through the outside of the medicine discharge bin (3); the ends of the rotating shafts (41) protruding from the outside of the medicine discharge bin (3) are fixedly mounted with a second gear (42); and the crawler belt (43) is mounted between the two second gears (42).

6. A farmland soil pollution control and restoration device as claimed in claim 5, characterized in that: Two springs (44) are fixedly installed above each of the flip plates (45) and between the lower discharge frame (34) and the upper partition (31), and external protruding rods (46) are fixedly installed on the side walls of the two flip plates (45) located below the lower discharge frame (34).

7. The farmland soil pollution control and restoration device according to claim 1, characterized in that: An upper guard plate (47) is fixedly mounted above the fixed support frame (12), a fixed bin (13) is fixedly mounted in the middle of the rear end of the fixed support frame (12), a drive motor (14) is fixedly mounted inside the fixed bin (13), and first gears (16) are fixedly mounted on the outer ring of the drive shaft (15) and the end of the drive motor (14), and the two first gears (16) are meshed up and down.

8. A farmland soil pollution control and restoration device as claimed in claim 7, characterized in that: The end of each of the second tilling blades (28) and the first tilling blade (18) is in a curved "J" shape, and a razor (2) is fixedly mounted on the side wall of each of the second tilling blades (28) and the first tilling blade (18) near the end, and a bevel groove (21) is provided above each razor (2), and a duckbill frame (22) is fixedly mounted on the side wall of each of the second tilling blades (28) and the first tilling blade (18) located below the razor (2), and at least two injection pipes (23) are fixedly mounted on the end of each duckbill frame (22).

9. A farmland soil pollution control and restoration device as claimed in claim 8, characterized in that: Two first gears (16) are fixedly mounted on the surface of the driving shaft (15); the two first gears (16) are located between the two fixed plates (17); and the two first gears (16) are connected to each second tilling blade (28) and the first tilling blade (18) on both sides.

10. A farmland soil pollution control and restoration device as claimed in claim 9, characterized in that: Two air-filled chambers (24) and two liquid chambers (26) are arranged inside each of the first gears (16); an air pipe (25) is connected between the two air-filled chambers (24) and the first tilling blade (18); and a water pipe (27) is connected between the two liquid chambers (26) and the second tilling blade (28).

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