Soil turning, pesticide spreading and soil covering integrated equipment for chemical remediation of polluted soil

Abstract

The invention discloses soil turning, pesticide spreading and soil covering integrated equipment for chemical remediation of contaminated soil, which comprises a vehicle body, a mounting frame and an air cylinder, and further comprises a soil turning mechanism arranged at the telescopic end of the air cylinder and used for improving the mixing effect of liquid pesticide and soil by turning soil after pesticide spreading, and a soil covering mechanism arranged at the telescopic end of the air cylinder, the soil covering mechanism is arranged on the outer side of the soil turning mechanism and used for bulldozing and compacting the soil after soil turning and pesticide spreading; the pesticide spreading mechanism is arranged between the mounting frame and the soil covering mechanism and is used for continuously spraying pesticides to the polluted soil in the advancing direction of the vehicle body; and the soil crushing mechanism is arranged between the soil turning mechanism and the soil covering mechanism and used for secondarily crushing soil blocks turned out under the action of centrifugal force in the soil turning process and secondarily spraying pesticide to the crushed and falling soil. And the crushed dry and hard soil blocks can be subjected to secondary pesticide spraying in the falling process, so that the mixing uniformity of the pesticide and the soil is improved.

Description

Technical Field

[0001] This invention relates to the field of soil remediation technology, specifically to an integrated device for chemical remediation of contaminated soil, which combines soil turning, pesticide application, and soil covering. Background Technology

[0002] Chemical remediation of contaminated soil refers to the technology of adding chemical remediation agents to the soil and using chemical reactions such as oxidation, reduction, precipitation, adsorption, and complexation to degrade, separate, or transform pollutants into low-toxicity, non-toxic, and harmless forms, thereby reducing their mobility and bioavailability.

[0003] The process of soil chemical remediation mainly includes soil turning, chemical spraying, and soil covering. In this process, the staff will first excavate the soil layer in the contaminated area to loosen the soil layer, and calculate and add chemical remediation agents according to the concentration of pollutants and the amount of soil. The addition methods include solid spreading and liquid spraying. Then, special equipment (ALLU screening bucket, stirring head, turning machine or special mixing device) is used to turn and stir the soil to achieve uniform mixing of the agent and soil. Finally, the treated soil is covered with soil to complete the final treatment of the soil.

[0004] In existing technologies, after the pesticide is sprayed, it mixes thoroughly with the soil using its own permeability. The soil turning equipment uses evenly distributed turning blades on the rotating shaft to turn and stir the loose soil. If some soil is too dry, it will become lumpy after being loosened, making it difficult for the pesticide to fully penetrate into the soil lumps after spraying, thus reducing the chemical remediation effect of the soil.

[0005] To address the aforementioned issues, there is an urgent need for innovative designs based on existing integrated soil remediation equipment. Summary of the Invention

[0006] The present invention addresses the problem of overly simplistic solutions in existing technologies by providing a significantly different solution. Specifically, the present invention aims to provide an integrated device for soil turning, pesticide application, and soil covering in the chemical remediation of contaminated soil. This device solves the problem mentioned in the background that if some soil is highly compacted, it will loosen and form clumps, making it difficult for pesticides to fully penetrate into the soil clumps after spraying.

[0007] To achieve the above objectives, the present invention provides the following technical solution: an integrated device for soil turning, pesticide application, and soil covering in the chemical remediation of contaminated soil, comprising a vehicle body, a mounting frame, and a cylinder, and further comprising:

[0008] The soil-turning mechanism, located at the telescopic end of the cylinder, is used to improve the mixing effect of pesticide and soil by turning the soil after spraying.

[0009] The soil covering mechanism, located outside the soil turning mechanism, is used to level and compact the soil after turning and applying pesticides.

[0010] The spraying mechanism, located between the mounting frame and the soil covering mechanism, is used to continuously spray pesticides onto the contaminated soil in the direction of vehicle movement.

[0011] The soil crushing mechanism, located between the soil turning mechanism and the soil covering mechanism, is used to further crush the soil clods turned out by centrifugal force during the soil turning process, and to spray the crushed and falling soil with pesticides.

[0012] Preferably, the mounting frame is fixedly mounted on the rear end of the vehicle body;

[0013] The cylinder is longitudinally fixed to the lower end of the mounting frame.

[0014] Preferably, the soil-turning mechanism includes a connecting bracket fixed to the telescopic end of the cylinder;

[0015] A lifting frame is fixed to the end of the connecting bracket;

[0016] A drive motor is installed on one outer wall of the lifting frame;

[0017] The output end of the drive motor is fixed with a rotating roller that is rotatably connected to the lifting frame.

[0018] The outer wall of the rotating roller is uniformly provided with soil-turning blades.

[0019] Preferably, the soil covering mechanism includes limiting plates symmetrically arranged on the top of the lifting frame;

[0020] The bottom of each limiting plate is fixed with a connecting column that penetrates the lifting frame;

[0021] The bottom of the connecting column is fixed with a cover located outside the soil-turning blade;

[0022] A first spring located on the outside of the connecting column is fixed between the lifting frame and the cover.

[0023] Preferably, the cover is configured as a U-shaped structure with the opening facing downwards;

[0024] The side wall of the cover is equipped with a rotatable pressure roller.

[0025] Preferably, the spraying mechanism includes a medicine box disposed at the upper end of the mounting frame;

[0026] A water pump is installed at the upper end of the mounting frame on one side of the medicine box;

[0027] A first pipe is fixedly installed on the lower end of the inner wall of the side of the cover facing the vehicle body.

[0028] The bottom of the first pipe is provided with first nozzles at equal intervals.

[0029] Preferably, the input end of the water pump is connected to the medicine tank via a pipeline;

[0030] The output end of the water pump is connected to the first pipe via a flexible hose.

[0031] Preferably, the soil-breaking mechanism includes multiple sets of baffles disposed inside the cover and located outside the soil-turning blade;

[0032] The baffles are sequentially attached and arranged;

[0033] The outer wall of each baffle is fixed with a sliding column that penetrates the cover;

[0034] A second spring located on the outside of the sliding column is fixed between the cover and the baffle.

[0035] Dampers are installed between the cover and the baffle.

[0036] Preferably, the soil-breaking mechanism further includes a second pipe fixed to the lower end of the inner wall on the other side of the cover;

[0037] A third pipe is provided on one side of the second pipe at the bottom of the baffle;

[0038] A connecting pipe is provided on the outside of the cover;

[0039] The two ends of the connecting pipe penetrate the inner wall of the cover, and the two ends of the connecting pipe are respectively connected to the first pipe and the second pipe.

[0040] The inner wall of the third pipe is provided with partitions at equal intervals;

[0041] The outer wall of the third pipe is provided with second nozzles at equal intervals.

[0042] Preferably, the top of the second pipe is provided with first connecting pipes at equal intervals;

[0043] The second pipe and the third pipe are horizontally connected and connected by a second connecting pipe;

[0044] A piston cylinder is provided inside the first connecting pipe at the connection point with the second connecting pipe, creating a sealed sliding connection.

[0045] A movable rod that slides and seals with the top of the first connecting pipe is provided at the center of the piston cylinder.

[0046] The outer wall of the movable rod is fixed to the piston cylinder by a support rod at an equal angle;

[0047] A connecting rod is hinged between the top of the movable rod and the corresponding baffle.

[0048] Compared with the prior art, the beneficial effects of the present invention are:

[0049] (1) In the process of soil remediation, the loosened soil is sprayed with pesticide continuously, and then the soil turning blade is used to turn and stir the soil to achieve uniform mixing of pesticide and soil. Finally, the soil is covered by pressing and rolling the pressure roller on the soil surface. Thus, the entire process of turning, spraying and covering the soil is completed during the movement of the vehicle. This remediation method can make the soil remediation process simple to operate and the pesticide and soil are mixed more evenly.

[0050] (2) In this invention, during the turning and stirring process of the turning blade, because the turning blade has an arc-shaped structure in the clockwise direction, it can turn out the dry soil clumps that have not been broken up in the loose soil. The broken soil falls down along the gap between the turning blades during the turning process, and the dry soil clumps are thrown towards the baffle under the action of centrifugal force. The larger dry soil clumps will hit the corresponding baffle. After reaching the maximum compression stroke of the damper, the dry soil clumps will break upon impact with the baffle and fall downward. At the same time, the piston cylinder slides downward in the first connecting pipe to seal it. After sliding, the second... One connecting pipe is connected to the second connecting pipe. After the agent enters the corresponding third pipe area, it is sprayed to one side through the corresponding second nozzle. The broken dry soil blocks can be sprayed a second time after falling. After the impact, the damper can slow down the reset of the baffle, thereby slowing down the upward sliding of the piston cylinder and increasing the spraying time of the second nozzle to ensure that the soil blocks can come into contact with the agent when they fall. The dry soil blocks of moderate size do not reach the impact force and directly hit the baffle and break. This part of the soil can be naturally mixed by the permeability of the agent after spraying. Attached Figure Description

[0051] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0052] Figure 2 This is a planar schematic diagram of the present invention;

[0053] Figure 3 This is a first-view perspective perspective view of the soil turning, pesticide application, and soil covering structure of the present invention.

[0054] Figure 4 This is a second-view perspective perspective view of the soil turning, pesticide application, and soil covering structure of the present invention;

[0055] Figure 5 This is a third-view perspective view of the soil turning, pesticide application, and soil covering structure of the present invention.

[0056] Figure 6 This is a plan view of the soil turning, pesticide application, and soil covering structure of the present invention;

[0057] Figure 7 This is a partial sectional perspective view of the soil-breaking mechanism of the present invention;

[0058] Figure 8 For the present invention Figure 7 Enlarged view of point A in the image.

[0059] In the diagram: 1. Vehicle body; 2. Mounting frame; 3. Cylinder; 4. Connecting bracket; 5. Lifting frame; 6. Drive motor; 7. Rotating roller; 8. Soil-turning blade; 9. Limiting plate; 10. Connecting column; 11. First spring; 12. Cover; 13. Pressure roller; 14. Baffle; 15. Sliding column; 16. Second spring; 17. Damper; 18. Medicine tank; 19. Water pump; 20. First pipe; 21. First nozzle; 22. Second pipe; 23. Third pipe; 24. Connecting pipe; 25. Partition plate; 26. Second nozzle; 27. First connecting pipe; 28. Second connecting pipe; 29. ​​Piston cylinder; 30. Movable rod; 31. Connecting rod. Detailed Implementation

[0060] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0061] Please see Figures 1 to 8 This invention provides a technical solution: an integrated device for soil turning, spraying, and covering in the chemical remediation of contaminated soil, comprising a vehicle body 1, a mounting frame 2, and a cylinder 3, and further comprising:

[0062] The soil-turning mechanism, located at the telescopic end of cylinder 3, is used to improve the mixing effect of pesticide and soil by turning the soil after spraying.

[0063] The soil covering mechanism, located outside the soil turning mechanism, is used to level and compact the soil after turning and applying pesticides.

[0064] The spraying mechanism is located between the mounting frame 2 and the soil covering mechanism, and is used to continuously spray pesticides onto the contaminated soil in the forward direction of the vehicle body 1.

[0065] The soil crushing mechanism, located between the soil turning mechanism and the soil covering mechanism, is used to further crush the soil clods turned out by centrifugal force during the soil turning process, and to spray the crushed and falling soil with pesticides.

[0066] Mounting frame 2 is fixedly installed at the rear end of vehicle body 1;

[0067] The cylinder 3 is longitudinally fixed to the lower end of the mounting frame 2.

[0068] In practice, cylinder 3 is electrically connected to vehicle body 1.

[0069] The soil turning mechanism includes a connecting bracket 4 fixed to the telescopic end of the cylinder 3;

[0070] A lifting frame 5 is fixed to the end of the connecting bracket 4;

[0071] A drive motor 6 is installed on one outer wall of the lifting frame 5;

[0072] The output end of the drive motor 6 is fixed with a rotating roller 7 that is rotatably connected to the lifting frame 5;

[0073] The outer wall of the rotating roller 7 is evenly provided with soil-turning blades 8.

[0074] In practice, the soil-turning blade 8 has an arc-shaped structure along the clockwise direction, and the drive motor 6 is electrically connected to the vehicle body 1.

[0075] The soil covering mechanism includes limiting plates 9 symmetrically arranged on the top of the lifting frame 5;

[0076] The bottom of each limiting plate 9 is fixed with a connecting column 10 that passes through the lifting frame 5;

[0077] The bottom of the connecting column 10 is fixed with a cover 12 located outside the soil-turning blade 8;

[0078] A first spring 11 located outside the connecting column 10 is fixed between the lifting frame 5 and the cover 12.

[0079] In practice, the cover 12 can only move longitudinally under the limiting effect of the symmetrically arranged connecting columns 10.

[0080] The cover 12 is designed as a U-shaped structure with the opening facing downwards;

[0081] The side wall of the cover 12 is provided with a rotatable pressure roller 13.

[0082] In practice, the cover 12 can shield the soil during the turning process to prevent soil from splashing.

[0083] The spraying mechanism includes a medicine box 18 installed at the upper end of the mounting frame 2;

[0084] A water pump 19 is installed on the upper end of the mounting frame 2, located on one side of the medicine box 18;

[0085] A first pipe 20 is fixedly installed on the lower end of the inner wall of the side of the cover 12 facing the vehicle body 1;

[0086] First nozzles 21 are evenly spaced at the bottom of the first pipe 20.

[0087] The input end of the water pump 19 is connected to the medicine tank 18 via a pipeline;

[0088] The output end of the water pump 19 is connected to the first pipe 20 via a flexible hose.

[0089] In practice, the water pump 19 is existing technology, which can adaptively maintain the output pressure and has a variable frequency constant pressure water supply system.

[0090] The soil-breaking mechanism includes multiple sets of baffles 14 installed inside the cover 12 and located outside the soil-turning blade 8;

[0091] The baffles 14 are sequentially attached and installed;

[0092] The outer wall of the baffle 14 is fixed with sliding columns 15 that penetrate the cover 12;

[0093] A second spring 16 located outside the sliding column 15 is fixed between the cover 12 and the baffle 14;

[0094] Dampers 17 are installed between the cover 12 and the baffle 14.

[0095] In practice, the sides of adjacent baffles 14 are fitted together, and the damper 17 can slow down the reset of the baffles 14 caused by the elastic force of the second spring 16.

[0096] The soil-breaking mechanism also includes a second pipe 22 fixed to the lower end of the inner wall on the other side of the cover 12;

[0097] A third pipe 23 is provided on one side of the second pipe 22 at the bottom of the baffle 14;

[0098] A connecting pipe 24 is provided on the outside of the cover 12;

[0099] The two ends of the connecting pipe 24 pass through the inner wall of the cover 12 respectively, and the two ends of the connecting pipe 24 are connected to the first pipe 20 and the second pipe 22 respectively.

[0100] The inner wall of the third pipe 23 is provided with partitions 25 at equal intervals;

[0101] The outer wall of the third pipe 23 is provided with second nozzles 26 at equal intervals.

[0102] In practice, the third pipe 23 is divided into multiple chambers by a partition 25, and the partition 25 is located between two adjacent sets of second nozzles 26, and the direction of the second nozzles 26 spraying the agent is horizontal to the right.

[0103] The top of the second pipe 22 is provided with first connecting pipes 27 at equal intervals;

[0104] The second pipe 22 and the third pipe 23 are horizontally connected and connected by a second connecting pipe 28;

[0105] A piston cylinder 29 is provided inside the first connecting pipe 27 at the connection point of the second connecting pipe 28 for sealing and sliding.

[0106] A movable rod 30 is provided at the center of the piston cylinder 29, which slides and seals against the top of the first connecting pipe 27.

[0107] The outer wall of the movable rod 30 is fixed to the piston cylinder 29 by a support rod at an equal angle;

[0108] A connecting rod 31 is hinged between the top of the movable rod 30 and the corresponding baffle 14.

[0109] In practice, the piston cylinder 29 is fixed to the movable rod 30 by a support rod, so that the medicine can flow inside the piston cylinder 29.

[0110] Working principle: First, the staff will excavate the contaminated soil in advance to achieve a loose soil state, and then use the integrated equipment to turn the soil, apply pesticides and cover it with soil.

[0111] Then, the vehicle body 1 is driven to the initial position of the contaminated soil, cylinder 3 is activated, and cylinder 3 drives the lifting frame 5 to rise and fall through the connecting bracket 4 until the pressure roller 13 touches the ground, at which point cylinder 3 is deactivated, and the prepared agent is added to the medicine tank 18. The drive motor 6 and water pump 19 are started, and the drive motor 6 drives the rotating roller 7 to rotate, so that the soil-turning blade 8 on the outer wall of the rotating roller 7 always rotates clockwise. The water pump 19 draws out and pressurizes the agent from the medicine tank 18 through the input pipe, and then delivers it to the first pipe 20 through the hose at the output end of the water pump 19. At this time, the connecting pipe 24, the second pipe 22, and the first connecting pipe 27 are all filled with agent. Because the port of the second connecting pipe 28 is blocked by the piston cylinder 29, no agent enters the third pipe 23. The first nozzle 21 at the bottom of the first pipe 20 begins to spray agent onto the soil below, and the vehicle body 1 begins to move forward slowly. Figure 2 As shown, moving to the right is the forward direction of vehicle body 1. The first nozzles 21, which are evenly distributed, begin to spray pesticide onto the soil in a covering manner. When the rotation range of the soil-turning blade 8 moves into the contaminated soil area, the cylinder 3 is activated, causing the lifting frame 5 to begin to descend. The rotating roller 7 drives the rotating soil-turning blade 8 to gradually penetrate deeper into the soil. The rotating roller 7 is located on the soil surface. Since the pressure roller 13 is in contact with the ground and limits the cover 12, the lifting frame 5 slides on the outer wall of the connecting column 10 while squeezing the first spring 11. Under the elastic force of the first spring 11, the pressure roller 13 can always be pressed tightly against the ground. Thus, during the forward movement of vehicle body 1, the soil is first sprayed with pesticide, and then the soil-turning blade 8 is used to turn and stir the soil after loosening to achieve uniform mixing of pesticide and soil. Finally, the pressure roller 13 is used to press and roll on the soil surface to complete the covering.

[0112] Finally, because the turning blade 8 has an arc-shaped structure in the clockwise direction, it can turn out the dry soil clumps that have not been broken up in the loose soil. The broken soil falls down along the gaps between the turning blades 8 during the turning process, and the dry soil clumps are thrown towards the baffle 14 under the action of centrifugal force. The larger dry soil clumps hit the corresponding baffle 14. Under the impact, the baffle 14 drives the sliding column 15 to slide on the cover 12 and squeeze the second spring 16. The damper 17 is also compressed. After the maximum compression stroke of the damper 17 is reached, the dry soil clumps break upon impact with the baffle 14 and fall downward. At the same time, the movement of the baffle 14 pushes the movable rod 30 downward through the connecting rod 31. The movable rod 30 slides and seals at the top of the first connecting pipe 27 and pushes the piston cylinder 29 to slide downward and seal within the first connecting pipe 27. After sliding, the first connecting pipe 27 and the second Connecting pipe 28 is connected. Since water pump 19 can adaptively balance water pressure, water pump 19 starts pressurizing and delivering after the first connecting pipe 27 is connected to the second connecting pipe 28. The third pipe 23 is divided into sections by partition 25. After the agent enters the corresponding area of ​​the third pipe 23, it is sprayed to one side through the corresponding second nozzle 26. The broken dry soil clods can be sprayed a second time after falling. After the impact, damper 17 can slow down the reset of baffle 14, thereby slowing down the upward sliding of piston cylinder 29 and increasing the spraying time of second nozzle 26 to ensure that the soil clods can come into contact with the agent when they fall. The dry soil clods of moderate size do not reach the impact force and directly hit baffle 14 and break. This part of the soil can be naturally mixed by the agent after spraying, thereby improving the uniformity of the mixing of the agent and the soil in the whole process of turning, spreading and covering.

[0113] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An integrated equipment for chemical remediation of contaminated soil, comprising a vehicle body (1), a mounting frame (2), and a cylinder (3), characterized in that, Also includes: The soil turning mechanism is set at the telescopic end of the cylinder (3) and is used to improve the mixing effect of pesticide and soil by turning the soil after spraying. The soil covering mechanism, located outside the soil turning mechanism, is used to level and compact the soil after turning and applying pesticides. The spraying mechanism is set between the mounting frame (2) and the soil covering mechanism for continuously spraying pesticides onto the contaminated soil in the forward direction of the vehicle body (1); The soil crushing mechanism, located between the soil turning mechanism and the soil covering mechanism, is used to further crush the soil clods turned out by centrifugal force during the soil turning process, and to spray the crushed and falling soil with pesticides.

2. The integrated equipment for soil turning, pesticide application, and soil covering for chemical remediation of contaminated soil according to claim 1, characterized in that: The mounting frame (2) is fixedly mounted at the rear end of the vehicle body (1); The cylinder (3) is longitudinally fixed to the lower end of the mounting frame (2).

3. The integrated equipment for soil turning, pesticide application, and soil covering for chemical remediation of contaminated soil according to claim 1, characterized in that: The soil turning mechanism includes a connecting bracket (4) fixed to the telescopic end of the cylinder (3); The end of the connecting bracket (4) is fixed with a lifting frame (5); A drive motor (6) is installed on one side of the outer wall of the lifting frame (5). The output end of the drive motor (6) is fixed with a rotating roller (7) that is rotatably connected to the lifting frame (5). The outer wall of the rotating roller (7) is uniformly provided with soil-turning blades (8).

4. The integrated equipment for soil turning, pesticide application, and soil covering for chemical remediation of contaminated soil according to claim 3, characterized in that: The soil covering mechanism includes a limiting plate (9) symmetrically arranged on the top of the lifting frame (5); The bottom of each limiting plate (9) is fixed with a connecting column (10) that passes through the lifting frame (5). The bottom of the connecting column (10) is fixed with a cover (12) located outside the soil turning blade (8). A first spring (11) located outside the connecting column (10) is fixed between the lifting frame (5) and the cover (12).

5. The integrated equipment for soil turning, pesticide application, and soil covering for chemical remediation of contaminated soil according to claim 4, characterized in that: The cover (12) is configured as a U-shaped structure with the opening facing downwards; The side wall of the cover (12) is provided with a rotatable pressure roller (13).

6. The integrated equipment for soil turning, chemical application, and soil covering for chemical remediation of contaminated soil according to claim 4, characterized in that: The spraying mechanism includes a medicine box (18) located at the upper end of the mounting frame (2); A water pump (19) is installed on the upper end of the mounting frame (2) on one side of the medicine box (18). The lower end of the inner wall of the cover (12) facing the vehicle body (1) is fixedly installed with a first pipe (20). The bottom of the first pipe (20) is provided with first nozzles (21) at equal intervals.

7. The integrated equipment for soil turning, pesticide application, and soil covering for chemical remediation of contaminated soil according to claim 6, characterized in that: The input end of the water pump (19) is connected to the medicine tank (18) via a pipeline; The output end of the water pump (19) is connected to the first pipe (20) via a flexible hose.

8. The integrated equipment for soil turning, chemical application, and soil covering for chemical remediation of contaminated soil according to claim 1, characterized in that: The soil breaking mechanism includes multiple sets of baffles (14) arranged inside the cover (12) and outside the soil turning blade (8). The baffles (14) are sequentially attached and arranged; The outer wall of each baffle (14) is fixed with a sliding column (15) that penetrates the cover (12). A second spring (16) located outside the sliding column (15) is fixed between the cover (12) and the baffle (14). A damper (17) is installed between the cover (12) and the baffle (14).

9. The integrated equipment for soil turning, pesticide application, and soil covering for chemical remediation of contaminated soil according to claim 8, characterized in that: The soil-breaking mechanism also includes a second pipe (22) fixed to the lower end of the inner wall on the other side of the cover (12). A third pipe (23) is provided on one side of the second pipe (22) at the bottom of the baffle (14); A connecting pipe (24) is provided on the outside of the cover (12). The two ends of the connecting pipe (24) penetrate the inner wall of the cover (12) respectively, and the two ends of the connecting pipe (24) are connected to the first pipe (20) and the second pipe (22) respectively. The inner wall of the third pipe (23) is provided with partitions (25) at equal intervals; The outer wall of the third pipe (23) is provided with second nozzles (26) at equal intervals.

10. An integrated equipment for soil turning, pesticide application, and soil covering for chemical remediation of contaminated soil according to claim 9, characterized in that: The top of the second pipe (22) is provided with first connecting pipes (27) at equal intervals; The second pipe (22) and the third pipe (23) are laterally connected and connected by a second connecting pipe (28); The piston cylinder (29) is provided inside the first connecting pipe (27) at the connection point of the second connecting pipe (28) for sealing and sliding. A movable rod (30) is provided at the center of the piston cylinder (29) and slides in a sealed manner with the top of the first connecting pipe (27). The outer wall of the movable rod (30) is fixed to the piston cylinder (29) by a support rod at an equal angle; A connecting rod (31) is hinged between the top of the movable rod (30) and the corresponding baffle (14).

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