Contaminated soil treatment device and treatment method

Abstract

The invention discloses a polluted soil treatment device which comprises a main frame body, a grinding mechanism, a punching mechanism, a liquid injection mechanism and a film covering mechanism, the lower end of the main frame body is fixedly connected with a soil breaking shovel, the upper end of the main frame body is fixedly connected with a device connecting frame, and the lower end of the main frame body is fixedly connected with a lower support; the lower support is rotatably connected with a transmission shaft, the transmission shaft penetrates through the lower support, and the axial outer wall of the transmission shaft is fixedly connected with a traveling wheel. The invention further discloses a contaminated soil treatment method which comprises the following steps: step 1, preliminary soil breaking, step 2, soil crushing, step 3, deep punching and step 4, repairing liquid injection. Through the arrangement of the structure and the method, cooperative work of ground breaking, grinding, punching, liquid injection and film mulching can be achieved, segmented operation or frequent manual intervention is not needed, the operation interval is greatly reduced, and large-area contaminated soil remediation work can be efficiently completed.

Description

Technical Field

[0001] This invention belongs to the field of soil remediation technology, specifically a contaminated soil remediation device and method. Background Technology

[0002] my country has a wide distribution of saline-alkali drylands. Due to problems such as high soil salinity, poor water and fertilizer retention capacity, and soil compaction, crop roots are unable to absorb water and fertilizer, resulting in low vegetation survival rates. This seriously restricts agricultural production and ecological restoration. The improvement of saline-alkali drylands has become a key task for protecting arable land resources and improving the regional ecology.

[0003] For example, a soil remediation agent spraying device for soil remediation disclosed on the China Patent Network, with patent publication number "CN111842472B", mainly consists of an outer frame, a push handle, a base, and a support base. The bottom of the base is equipped with a drive mechanism, and a caster wheel is fixedly connected to the other side of the bottom of the base. A push handle is welded to one side of the top of the base, and a controller is fixedly connected to one side of the push handle. This invention features a telescopic structure on one side of the base. A water pump draws liquid from the water tank through a water pipe, which is then sprayed onto the soil via a nozzle through a fixed frame. Since different soils require different densities of remediation agents, the angle between the first and second hinge rods can be changed by rotating an adjustment button and adjusting the rotation of the movable gear at the bottom of the button. This causes the fixed frame to deflect, thus changing the amount of remediation agent sprayed per unit of soil during the device's movement, thereby adjusting the spraying density. However, this device cannot break up the compacted layer or create deep ventilation channels, making it difficult for the amendment or remediation liquid to reach the plant root distribution area, hindering in-depth remediation. Therefore, this invention proposes a novel contaminated soil remediation device and method. Summary of the Invention

[0004] The purpose of this invention is to provide a contaminated soil remediation device and method to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a contaminated soil remediation device, comprising: a main frame, a crushing mechanism, a drilling mechanism, a liquid injection mechanism, and a film covering mechanism. A soil-breaking shovel is fixedly connected to the lower end of the main frame, a device connecting frame is fixedly connected to the upper end of the main frame, a lower support is fixedly connected to the lower end of the main frame, a drive shaft is rotatably connected to the lower support, the drive shaft passes through the lower support, and a traveling wheel is fixedly connected to the axial outer wall of the drive shaft. The crushing mechanism is used to crush the soil broken by the soil-breaking shovel. The crushing mechanism includes a vertical reset part, a rotating part, a reciprocating sliding part, and a working part. The drilling mechanism is located at the upper end of the main frame and is used to drill deep holes in the crushed soil. The injection mechanism is located at the upper end of the main frame and is used to inject soil remediation liquid into the soil after drilling. The covering mechanism is located at the lower end of the main frame and is used to cover the remediated soil with a film.

[0006] Furthermore, the rotating part is disposed on the axial outer wall of the transmission shaft. The rotating part can rotate 360°. The reciprocating sliding part can slide up and down. The rotating part is used to drive the reciprocating sliding part to slide upward. The vertical reset part can vertically retract and expand. The vertical reset part retracts as the reciprocating sliding part slides upward. The vertical reset part is used to drive the reciprocating sliding part to reset downward.

[0007] Furthermore, the working part is located at the lower end of the reciprocating sliding part, and the working part moves up and down as the reciprocating sliding part slides up and down. The working part is used to crush the soil broken by the soil-breaking shovel, and multiple working parts are staggered.

[0008] Furthermore, the drilling mechanism includes an upper support, a vertical telescopic part, a vertical sliding part, a driving part, and a rotating part. The upper support is fixedly connected to the upper end of the main frame. The vertical telescopic part is located at the upper end of the upper support and can extend and retract freely vertically. The vertical telescopic part is used to drive the vertical sliding part, which can slide up and down. The driving part is located at the upper end of the vertical sliding part and is used to drive the rotating part to rotate. The rotating part is used to drill holes in the soil.

[0009] Furthermore, the injection unit includes an upper support frame, a water tank, a distribution box, a sliding part, and a reset part. The upper support frame is fixedly connected to the upper end of the main frame. The water tank is located at the upper end of the upper support frame. A main pipeline is fixedly connected to the side wall of the water tank. The end of the main pipeline away from the water tank is fixedly connected to the distribution box.

[0010] Furthermore, the sliding part is disposed inside the dispensing box, and the sliding part can slide up and down. When the vertical sliding part slides down, it will drive the sliding part to slide down. The reset part is disposed inside the dispensing box, and the reset part is located at the lower end of the sliding part. The reset part can extend and retract and expand. The reset part is used to drive the sliding part to reset. The sliding part is used to control the release of the repair fluid in the water tank.

[0011] Furthermore, the coating mechanism includes a fixed bracket, an adjusting bracket, a protective film, a transverse rotating shaft, and a rolling part. The fixed bracket is fixedly connected to the lower end of the main bracket, and the adjusting bracket is rotatably connected to the fixed bracket.

[0012] Furthermore, the protective film is disposed on the axial outer wall of the transverse rotating shaft, the transverse rotating shaft is rotatably connected to the adjusting bracket, and the rolling part can rotate freely 360°. The rolling part drives the transverse rotating shaft to rotate through the protective film.

[0013] Furthermore, the adjustment mechanism can rotate freely vertically, and the adjustment mechanism is used to adjust the angle of the adjustment bracket.

[0014] Furthermore, the soil remediation method of a contaminated soil remediation device as described in any of the above-mentioned items includes the following steps; Step 1: Initial soil breaking. First, the device is connected to the external traction structure through the device connection frame at the upper end of the main frame. After starting, the drive device moves, and the travel wheel connected to the lower support at the lower end of the main frame rotates and drives the drive shaft to rotate synchronously. At the same time, the soil breaking shovel fixed at the lower end of the main frame moves with the device to initially break up the contaminated soil on the surface, preparing for the subsequent crushing process. Step 2: Soil Crushing: When the drive shaft rotates, the rotating part of the crushing mechanism on its outer wall rotates 360° accordingly, pushing the reciprocating sliding part to slide upward and causing the vertical reset part to retract. When the rotating part rotates to the position without driving force, the vertical reset part unfolds and drives the reciprocating sliding part to reset downward, forming an up-and-down reciprocating motion. The working part at the lower end of the reciprocating sliding part moves up and down accordingly, using impact force to crush the soil after breaking the soil, ensuring that the crushing is uniform and without omissions. Step 3: Deep Drilling: The crushed soil moves with the device to the bottom of the drilling mechanism. The upper support of the drilling mechanism is fixed to the upper part of the main frame to provide support. The vertical telescopic part at the upper end of the upper support extends and retracts downward and pushes the vertical sliding part down. At the same time, the drive part at the upper end of the vertical sliding part is activated, driving the rotating part to rotate at high speed. As the vertical sliding part continues to move down, the high-speed rotating part inserts into the soil, completing the deep drilling and creating a channel for injecting the remediation fluid. Step 4: Injecting the repair fluid: The injection mechanism works in conjunction with drilling. The upper support frame of the injection mechanism is fixed to the upper end of the main frame. The water tank stores the repair fluid. The vertical sliding part presses down on the sliding part in the distribution box, opening the channel between the water tank and the distribution box. The repair fluid flows into the distribution box through the main pipeline and is then injected into the soil hole. When the vertical sliding part resets, the reset part in the distribution box pushes the sliding part upward, closing the channel and stopping the injection. Step 5: Soil Covering: After the remediation solution is injected, the soil is moved to the bottom of the covering mechanism. The adjusting bracket and the fixed bracket are rotatably connected. The angle of the adjusting bracket is adjusted by the adjusting mechanism to match the soil height. During the movement of the device, the soil contacts the rolling part and makes it rotate. The rolling part drives the horizontal rotating shaft to rotate through the protective film, releasing the protective film to cover the soil surface and avoid secondary pollution.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention features strong operational continuity and high remediation efficiency. It adopts an integrated design for the entire process of breaking soil, crushing, drilling, injecting liquid, and covering with film, eliminating the need for segmented operations or frequent manual intervention, significantly reducing operation intervals, and enabling efficient completion of large-area contaminated soil remediation work.

[0016] 2. This invention provides refined soil treatment and excellent remediation results. Through the coordinated use of multiple components, the soil is thoroughly crushed, the drilling depth is precisely controlled, and the remediation solution is injected quantitatively and evenly, thereby improving the reaction efficiency between the remediation solution and the contaminated soil and effectively avoiding the problem of incomplete surface remediation.

[0017] 3. It is easy and flexible to operate and highly adaptable. It can be connected to an external drive system, can be adapted to soils with different flatness by adjusting the components, and can also adjust the injection volume according to the actual soil conditions to meet diverse needs for contaminated soil treatment. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the contaminated soil remediation device of the present invention; Figure 2 This is a rear view of the present invention; Figure 3 This is a schematic diagram of the structure, including the adjustment mechanism; Figure 4 This is a schematic diagram of the crushing mechanism and other structures of the present invention; Figure 5 This is a schematic diagram of a portion of the working mechanism of the present invention; Figure 6 This is a cross-sectional view of the liquid injection mechanism of the present invention; Figure 7 This is an enlarged schematic diagram of the structure at point 6A; Figure 8 This is a schematic diagram of the internal structure of a piston cylinder.

[0019] In the diagram: 1 Main frame, 101 Horizontal frame, 102 Upper support frame, 2 Breaking shovel, 3 Lower support, 4 Traveling wheel, 5 Drive shaft, 6 Slide plate, 7 Telescopic cylinder, 8 First return spring, 9 Connecting rod, 10 Slider, 11 Slide rail, 12 Crushing hammer, 13 Upper support, 14 Hydraulic cylinder, 15 Sliding block, 16 Horizontal support, 17 Mounting plate, 18 Motor, 19 Rotary shaft, 20 Protective shell, 21 First bevel gear, 201 Baffle, 22 Second bevel gear, 24 Excavating drill bit, 25 Drive shaft, 26 Water tank, 27 Main pipeline, 28 Distribution box, 29 Sliding plug, 30 Piston cylinder, 31 Transmission rod, 32 Drive slider, 33 Discharge pipe, 34 Fixed support, 35 Adjusting support, 36 Connecting block, 37 Lead screw, 38 Horizontal rotating shaft, 39 Protective film, 40 Shaft, 41 Film application roller, 42 Device connecting frame, 43 Second return spring, 301 Slide groove, 501 Protrusion. Detailed Implementation

[0020] 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.

[0021] Example 1: like Figures 1-8 As shown, a contaminated soil remediation device includes: a main frame 1, a crushing mechanism, a drilling mechanism, a liquid injection mechanism, and a film covering mechanism; The lower end of the main frame 1 is fixedly connected to a soil-breaking shovel 2, the upper end of the main frame 1 is fixedly connected to a device connecting frame 42, the lower end of the main frame 1 is fixedly connected to a lower support 3, the lower support 3 is rotatably connected to a drive shaft 5, the drive shaft 5 passes through the lower support 3, and a traveling wheel 4 is fixedly connected to the axial outer wall of the drive shaft 5. The crushing mechanism is used to crush the soil broken by the soil-breaking shovel 2. The crushing mechanism includes a vertical reset part, a rotating part, a reciprocating sliding part, and a working part. The drilling mechanism is located at the upper end of the main frame 1 and is used to drill deep holes in the crushed soil. The injection mechanism is located at the upper end of the main frame 1. The injection mechanism is used to inject soil remediation liquid into the soil after drilling. The mulching mechanism is located at the lower end of the main frame 1 and is used to mulch the remediated soil.

[0022] The rotating part is located on the axial outer wall of the transmission shaft 5. The rotating part can rotate 360°. The reciprocating sliding part can slide up and down. The rotating part is used to drive the reciprocating sliding part to slide upward. The vertical reset part can vertically retract and expand. The vertical reset part retracts as the reciprocating sliding part slides upward. The vertical reset part is used to drive the reciprocating sliding part to reset downward.

[0023] The working part is located at the lower end of the reciprocating sliding part. The working part moves up and down as the reciprocating sliding part slides up and down. The working part is used to crush the soil broken by the soil breaking shovel 2. Multiple working parts are staggered.

[0024] Reference Figure 1-8 As shown, the vertical reset part can be specifically manufactured as follows: the telescopic cylinder 7, the first reset spring 8, the rotating part can be specifically manufactured as the protrusion 501, the reciprocating sliding part can be specifically manufactured as the slide plate 6, the connecting rod 9, the slider 10, and the working part can be specifically manufactured as the crushing hammer 12. Specifically, the inner walls of the main frame 1 are fixedly connected to the two ends of the crossbeam 101, and the side ends of the crossbeam 101 are fixedly connected to the slide rail 11. The lower support 3 is provided with a slide groove 301. The telescopic cylinder 7 is set at the upper end of the slide groove 301. The first return spring 8 is sleeved on the outer wall of the telescopic end of the telescopic cylinder 7. The telescopic end of the telescopic cylinder 7 is fixedly connected to the slide plate 6. The protrusion 501 is fixedly connected to the axial outer wall of the transmission shaft 5. The slide plate 6 is fixedly connected to the slider 10 through the connecting rod 9. The slider 10 is slidably connected to the slide rail 11. The crushing hammer 12 is fixedly connected to the lower end of the slider 10.

[0025] In this embodiment, the device is connected to an external drive system, such as a tractor, via a device connecting frame 42. The travel wheels 4 move along with the external drive system. When the travel wheels 4 rotate, the entire drive unit moves forward along the area of ​​soil to be repaired, simultaneously driving the transmission shaft 5 to rotate around its own axis. The protrusion 501 moves 360° in a circular motion with the transmission shaft 5. During the movement of the device, the breaking shovel 2 on the lower support 3 is inserted into the soil to initially break up the surface soil, forming loose soil clods. When the rotating protrusion 501 rotates with the transmission shaft to contact the sliding plate 6, it pushes the sliding plate 6 upward along the slide groove 301, driving the slider 10 upward along the slide rail 11 via the connecting rod 9, and the crushing hammer 12 rises simultaneously.

[0026] During the upward movement of the slide plate 6, the telescopic cylinder 7 and the first return spring 8 are compressed, storing return potential energy. As the protrusion 501 continues to rotate with the drive shaft until it disengages from the slide plate 6, the first return spring 8 releases its potential energy, pushing the slide plate 6, slider 10, and tamping hammer 12 downwards rapidly. Gravity and spring force are used to crush the soil clods broken by the shovel 2. As the traveling wheel continues to rotate, the protrusion 501 repeatedly contacts and disengages from the slide plate 6, causing the tamping hammer 12 to reciprocate up and down. This, combined with the forward movement of the equipment, achieves continuous crushing of the soil. The multiple staggered tamping hammers 12 ensure thorough compaction without dead zones, facilitating subsequent liquid injection and mulching steps. Example 2: Compared to Embodiment 1, the drilling mechanism in this embodiment includes an upper support 13, a vertical telescopic part, a vertical sliding part, a driving part, and a rotating part. The upper support 13 is fixedly connected to the upper end of the main frame 1. The vertical telescopic part is located at the upper end of the upper support 13 and can extend and retract freely in the vertical direction. The vertical telescopic part is used to drive the vertical sliding part, which can slide up and down. The driving part is located at the upper end of the vertical sliding part and is used to drive the rotating part to rotate. The rotating part is used to drill holes in the soil.

[0027] Reference Figure 1-5In this embodiment, the vertical telescopic part can be specifically made into a hydraulic cylinder 14, the vertical sliding part can be specifically made into a sliding block 15, the horizontal support 16, the mounting plate 17, the baffle 201, the drive part can be specifically made into a motor 18, a rotating shaft 19, a first bevel gear 21, a second bevel gear 22, a protective shell 20, and the rotating part can be specifically made into a digging drill bit 24 and a drive shaft 25.

[0028] Specifically, the hydraulic cylinder 14 is set at the upper end of the upper bracket 13. The telescopic end of the hydraulic cylinder 14 is fixedly connected to the sliding block 15. The transverse bracket 16 is fixedly connected to the sliding block 15. The mounting plate 17 is fixedly connected to the upper end of the transverse bracket 16. The baffle 201 is fixedly connected to the upper end of the mounting plate 17. The motor 18 is fixedly installed on the side wall of the mounting plate 17. The output shaft of the motor 18 is fixedly connected to the rotating shaft 19. The rotating shaft 19 passes through and rotatably connects to the protective shell 20. The end of the rotating shaft 19 away from the motor 18 is rotatably connected to the baffle 201.

[0029] The first bevel gear 21 and the second bevel gear 22 are disposed inside the protective shell 20. The first bevel gear 21 is fixedly connected to the axial outer wall of the rotating shaft 19. The first bevel gear 21 meshes with the second bevel gear 22. The second bevel gear 22 is fixedly connected to the drive shaft 25. The drive shaft 25 passes through and rotatably connects to the protective shell 20. The excavating drill bit 24 is fixedly connected to the drive shaft 25.

[0030] In this embodiment, when the equipment reaches the soil area requiring drilling, the drilling mechanism begins preparation. At this time, the motor 18 is powered on and begins to operate. The output shaft of the motor 18 drives the rotating shaft 19 to rotate, and the first bevel gear 21, fixed to the outer wall of the rotating shaft 19, rotates synchronously with the rotating shaft 19. Since the first bevel gear 21 meshes with the second bevel gear 22, the rotation of the first bevel gear 21 drives the second bevel gear 22 to rotate, which in turn causes the drive shaft 25, fixedly connected to the second bevel gear 22, to rotate. Finally, the excavating drill bit 24 at the lower end of the drive shaft 25 begins to rotate, preparing for soil drilling. While the excavating drill bit 24 continues to rotate, the hydraulic cylinder 14 extends, and its extension end pushes the sliding block 15 downwards. The downward movement of the sliding block 15 causes the transverse support 16, the mounting plate 17, and components such as the motor 18 and protective shell 20 mounted on the mounting plate 17 to move downwards synchronously. As the entire assembly moves downwards, the high-speed rotating excavating drill bit 24 gradually contacts and cuts into the soil, using rotational force to perform the drilling operation.

[0031] During the drilling process, the baffle 201 supports the rotating shaft 19, ensuring its stable rotation. The protective shell 20 protects the internal first bevel gear 21 and second bevel gear 22, preventing soil and debris from affecting the gear transmission. When the excavating drill bit 24 reaches the preset drilling depth, the hydraulic cylinder 14 stops extending. Subsequently, the hydraulic cylinder 14 begins to retract, and its extension end drives the sliding block 15, the transverse support 16, and other components to move upward, causing the excavating drill bit 24 to gradually withdraw from the drilled hole. As the excavating drill bit 24 withdraws from the soil, the motor 18 continues to operate, keeping the excavating drill bit 24 rotating to facilitate a smoother exit from the soil. When the excavating drill bit 24 has completely withdrawn from the soil and returned to its initial height, the motor 18 stops operating, the excavating drill bit 24 stops rotating, the hydraulic cylinder 14 stops retracting, and the entire drilling mechanism returns to its initial state, awaiting the next drilling operation command.

[0032] Example 3: Reference Figure 6 , Figure 7 In this embodiment, the injection unit includes an upper support frame 102, a water tank 26, a distribution box 28, a sliding part, and a reset part. The upper support frame 102 is fixedly connected to the upper end of the main frame 1. The water tank 26 is located at the upper end of the upper support frame 102. A main pipeline 27 is fixedly connected to the side wall of the water tank 26. The end of the main pipeline 27 away from the water tank 26 is fixedly connected to the distribution box 28. The sliding part is located inside the distribution box 28 and can slide up and down. When the vertical sliding part slides down, it will drive the sliding part to slide down. The reset part is located inside the distribution box 28 and is located at the lower end of the sliding part. The reset part can extend and retract and expand. The reset part is used to drive the sliding part to reset and the sliding part is used to control the release of the repair fluid in the water tank 26.

[0033] The specific distribution box 28 is fixedly connected to the main frame 1. The sliding part can be configured as a sliding plug 29, a transmission rod 31, a driving slider 32, and the reset part can be specifically made as a piston cylinder 30 and a second reset spring 43. The lower end of the specific distribution box 28 is fixedly connected to multiple liquid outlet pipes 33, each liquid outlet pipe 33 corresponding to a digging drill bit 24. The driving slider 32 passes through and slides through the distribution box 28. The lower end of the driving slider 32 is fixedly connected to the transmission rod 31. The second reset spring 43 is set inside the piston cylinder 30. The piston end of the piston cylinder 30 is fixedly connected to the transmission rod 31. The piston cylinder 30 is fixedly connected to the lower end of the inner wall of the distribution box 28. The transmission rod 31 is fixedly connected to the sliding plug 29. The sliding plug 29 is in contact with the outlet of the main pipeline 27. When the transverse support 16 moves down, it will drive the driving slider 32 to move down.

[0034] In this embodiment, the specific working process of the device is as follows: When the drilling mechanism is working, the horizontal support 16 moves downward with the vertical sliding part. When the horizontal support 16 moves down to contact the driving slider 32, the continuing downward movement of the horizontal support 16 will push the driving slider 32 to slide downward along the distribution box 28. The downward movement of the driving slider 32 drives the sliding plug 29 to move downward synchronously through the transmission rod 31. At the same time, the transmission rod 31 compresses the piston end of the piston cylinder 30, causing the piston cylinder 30 to contract. The second return spring 43 located inside the piston cylinder 30 is compressed and stores elastic potential energy. As the sliding plug 29 moves downward, a gap is created between the sliding plug 29 and the outlet of the main pipeline 27, and the main pipeline 27 is opened. The soil remediation fluid in the water tank 26 flows into the distribution box 28 through the main pipeline 27. After the remediation fluid enters the distribution box 28, since the multiple outlet pipes 33 at the lower end of the distribution box 28 correspond to a hole drilled by the excavation drill bit 24, the remediation fluid flows into the corresponding soil hole through each outlet pipe 33 under the action of gravity, realizing the operation of accurately injecting remediation fluid into the drilled soil.

[0035] The amount of fluid injected can be controlled by the downward movement of the transverse support 16 (i.e., the opening size of the main pipeline 27 opened by the sliding plug 29) and the dwell time, ensuring that each hole receives an appropriate amount of repair fluid. When the drilling mechanism completes the drilling operation, as the transverse support 16 moves upward with the vertical sliding part, the downward pressure of the transverse support 16 on the drive slider 32 gradually disappears. At this time, the compressed second return spring 43 releases its elastic potential energy, pushing the piston end of the piston cylinder 30 to return upward, which in turn drives the sliding plug 29 and the drive slider 32 to move upward through the transmission rod 31.

[0036] The sliding plug 29 moves upward until it re-fits tightly with the outlet of the main pipe 27, closing the main pipe 27, cutting off the flow of the repair fluid, and stopping the injection operation. The drive slider 32 also moves upward to its initial position, waiting for the next injection operation in conjunction with the transverse support 16.

[0037] Example 4: Compared to Embodiment 3, in this embodiment, the coating mechanism includes a fixed bracket 34, an adjusting bracket 35, a protective film 39, a transverse rotating shaft 38, and a rolling part. The fixed bracket 34 is fixedly connected to the lower end of the main frame 1. The adjusting bracket 35 is rotatably connected to the fixed bracket 34. The protective film 39 is disposed on the axial outer wall of the transverse rotating shaft 38. The transverse rotating shaft 38 is rotatably connected to the adjusting bracket 35. The rolling part can rotate freely 360°. The rolling part drives the transverse rotating shaft 38 to rotate through the protective film 39. An adjusting mechanism is provided at the upper end of the adjusting bracket 35. The adjusting mechanism can rotate freely vertically and is used to adjust the angle of the adjusting bracket 35.

[0038] In this embodiment, the rolling part can be specifically made into a shaft 40, the film-applying roller 41, and the adjusting mechanism can be specifically made into a lead screw 37 and a connecting block 36. The shaft 40 is rotatably connected to the adjusting bracket 35, the film-applying roller 41 is fixedly connected to the axial outer wall of the shaft 40, the lead screw 37 is threadedly connected to the main frame 1, the bottom end of the lead screw 37 is rotatably connected to the connecting block 36, the connecting block 36 is rotatably connected to the adjusting bracket 35, and the film-applying roller 41 is connected to the transverse rotating shaft 38 through the protective film 39.

[0039] It should be further noted that the film-applying roller 41 is made of lightweight plastic and is hollow inside, to prevent the film-applying roller 41 from being too heavy and compacting the soil again.

[0040] In this embodiment, the device operates as follows: the operator rotates the lead screw 37 according to the soil surface flatness and the required film tension. Since the lead screw 37 is threaded to the main frame 1, its rotation causes vertical movement, which, through the rotating connecting block 36 at its bottom, drives the adjusting bracket 35 to rotate around its connection point with the fixed bracket 34, thereby adjusting the angle of the adjusting bracket 35. This change in the angle of the adjusting bracket 35 alters the height of the transverse rotating shaft 38 and the film-applying roller 41, as well as their angle with the ground, ensuring that the film-applying roller 41 contacts the soil surface with appropriate pressure while maintaining adequate tension when the protective film 39 is released. As the device moves forward, the film-applying roller 41 contacts the treated soil surface, and under the friction of the advancing device, it rotates 360° around the axis 40. Since one end of the protective film 39 is connected to the film-applying roller 41 and the other end is wrapped around the horizontal rotating shaft 38, the rotation of the film-applying roller 41 will drive the horizontal rotating shaft 38 to rotate synchronously through the protective film 39, so that the protective film 39 on the horizontal rotating shaft 38 is gradually pulled out and unfolded.

[0041] The unfolded protective film 39 is smoothly applied to the soil surface under the pressure of the film-applying roller 41. As the equipment continues to move forward, the film-applying roller 41 rolls continuously, and the transverse rotating shaft 38 continuously releases the protective film 39, achieving continuous film covering of the remediated soil. During the film covering process, if the soil surface is uneven or the tension of the protective film 39 is abnormal, the angle of the adjustment bracket 35 can be finely adjusted by rotating the lead screw 37 in real time. For example, when the ground is raised, rotating the lead screw 37 upwards will slightly lift the adjustment bracket 35, allowing the film-applying roller 41 to rise appropriately and preventing the protective film 39 from being punctured by the raised area; when the ground is sunken, rotating the lead screw 37 downwards will increase the angle of the adjustment bracket 35, allowing the film-applying roller 41 to fit more closely to the ground and ensuring a tight film covering. Once the entire soil remediation area has been covered, the equipment stops moving, and the film-applying roller 41 and the transverse rotating shaft 38 stop rotating. The operator can rotate the lead screw 37 in the opposite direction to lift the adjusting bracket 35 upwards, causing the film-applying roller 41 and the transverse rotating shaft 38 to move away from the ground and properly store the remaining protective film 39. Finally, the film-applying mechanism is inspected, and any soil or impurities that may be attached to the film-applying roller 41 are cleaned to prepare for the next operation.

[0042] The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the invention to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical application of the invention, and to enable those skilled in the art to understand the invention and to design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A contaminated soil remediation device, comprising: The main frame (1), crushing mechanism, drilling mechanism, liquid injection mechanism, and coating mechanism are characterized in that: The lower end of the main frame (1) is fixedly connected to a soil-breaking shovel (2), the upper end of the main frame (1) is fixedly connected to a device connecting frame (42), the lower end of the main frame (1) is fixedly connected to a lower support (3), the lower support (3) is rotatably connected to a drive shaft (5), the drive shaft (5) passes through the lower support (3), and the axial outer wall of the drive shaft (5) is fixedly connected to a traveling wheel (4). The crushing mechanism is used to crush the soil broken by the soil-breaking shovel (2). The crushing mechanism includes a vertical reset part, a rotating part, a reciprocating sliding part, and a working part. The drilling mechanism is located at the upper end of the main frame (1) and is used to drill deep holes in the crushed soil. The injection mechanism is located at the upper end of the main frame (1), and the injection mechanism is used to inject soil remediation liquid into the soil after drilling. The covering mechanism is located at the lower end of the main frame (1) and is used to cover the remediated soil with a film.

2. The contaminated soil remediation device according to claim 1, characterized in that, The rotating part is disposed on the axial outer wall of the transmission shaft (5). The rotating part can rotate 360°. The reciprocating sliding part can slide up and down. The rotating part is used to drive the reciprocating sliding part to slide upward. The vertical reset part can vertically contract and expand. The vertical reset part contracts as the reciprocating sliding part slides upward. The vertical reset part is used to drive the reciprocating sliding part to reset downward.

3. The contaminated soil remediation device according to claim 2, characterized in that, The working part is located at the lower end of the reciprocating sliding part. The working part moves up and down as the reciprocating sliding part slides up and down. The working part is used to crush the soil broken by the soil breaking shovel (2). Multiple working parts are staggered.

4. The contaminated soil remediation device according to claim 1, characterized in that, The drilling mechanism includes an upper support (13), a vertical telescopic part, a vertical sliding part, a driving part, and a rotating part. The upper support (13) is fixedly connected to the upper end of the main frame (1). The vertical telescopic part is located at the upper end of the upper support (13). The vertical telescopic part can extend and retract freely in the vertical direction. The vertical telescopic part is used to drive the vertical sliding part. The vertical sliding part can slide up and down. The driving part is located at the upper end of the vertical sliding part. The driving part is used to drive the rotating part to rotate. The rotating part is used to drill holes in the soil.

5. The contaminated soil remediation device according to claim 4, characterized in that, The injection unit includes an upper support frame (102), a water tank (26), a distribution box (28), a sliding part, and a reset part. The upper support frame (102) is fixedly connected to the upper end of the main frame (1). The water tank (26) is located at the upper end of the upper support frame (102). A main pipeline (27) is fixedly connected to the side wall of the water tank (26). The end of the main pipeline (27) away from the water tank (26) is fixedly connected to the distribution box (28).

6. The contaminated soil remediation device according to claim 5, characterized in that, The sliding part is located inside the distribution box (28). The sliding part can slide up and down. When the vertical sliding part slides down, it will drive the sliding part to slide down. The reset part is located inside the distribution box (28). The reset part is located at the lower end of the sliding part. The reset part can extend and retract. The reset part is used to drive the sliding part to reset. The sliding part is used to control the release of the repair fluid in the water tank (26).

7. The contaminated soil remediation device according to claim 1, characterized in that, The coating mechanism includes a fixed bracket (34), an adjusting bracket (35), a protective film (39), a transverse rotating shaft (38), and a rolling part. The fixed bracket (34) is fixedly connected to the lower end of the main bracket (1), and the adjusting bracket (35) is rotatably connected to the fixed bracket (34).

8. The contaminated soil remediation device according to claim 7, characterized in that, The protective film (39) is disposed on the axial outer wall of the transverse rotating shaft (38), the transverse rotating shaft (38) is rotatably connected to the adjusting bracket (35), the rolling part can rotate freely in 360°, and the rolling part drives the transverse rotating shaft (38) to rotate through the protective film (39).

9. A contaminated soil remediation device according to claim 8, characterized in that, An adjustment mechanism is provided at the upper end of the adjustment bracket (35). The adjustment mechanism can rotate freely vertically and is used to adjust the angle of the adjustment bracket (35).

10. A soil remediation method using a contaminated soil remediation device as described in any one of claims 1-9, characterized in that, Includes the following steps: Step 1: Initial soil breaking. First, the device is connected to the external traction structure through the device connection frame at the upper end of the main frame. After starting, the drive device moves, and the travel wheel connected to the lower support at the lower end of the main frame rotates and drives the drive shaft to rotate synchronously. At the same time, the soil breaking shovel fixed at the lower end of the main frame moves with the device to initially break up the contaminated soil on the surface, preparing for the subsequent crushing process. Step 2: Soil Crushing: When the drive shaft rotates, the rotating part of the crushing mechanism on its outer wall rotates 360° accordingly, pushing the reciprocating sliding part to slide upward and causing the vertical reset part to retract. When the rotating part rotates to the position without driving force, the vertical reset part unfolds and drives the reciprocating sliding part to reset downward, forming an up-and-down reciprocating motion. The working part at the lower end of the reciprocating sliding part moves up and down accordingly, using impact force to crush the soil after breaking the soil, ensuring that the crushing is uniform and without omissions. Step 3: Deep Drilling: The crushed soil moves with the device to the bottom of the drilling mechanism. The upper support of the drilling mechanism is fixed to the upper part of the main frame to provide support. The vertical telescopic part at the upper end of the upper support extends and retracts downward and pushes the vertical sliding part down. At the same time, the drive part at the upper end of the vertical sliding part is activated, driving the rotating part to rotate at high speed. As the vertical sliding part continues to move down, the high-speed rotating part inserts into the soil, completing the deep drilling and creating a channel for injecting the remediation fluid. Step 4: Injecting the repair fluid: The injection mechanism works in conjunction with drilling. The upper support frame of the injection mechanism is fixed to the upper end of the main frame. The water tank stores the repair fluid. The vertical sliding part presses down on the sliding part in the distribution box, opening the channel between the water tank and the distribution box. The repair fluid flows into the distribution box through the main pipeline and is then injected into the soil hole. When the vertical sliding part resets, the reset part in the distribution box pushes the sliding part upward, closing the channel and stopping the injection. Step 5: Soil Covering: After the remediation solution is injected, the soil is moved to the bottom of the covering mechanism. The adjusting bracket and the fixed bracket are rotatably connected. The angle of the adjusting bracket is adjusted by the adjusting mechanism to match the soil height. During the movement of the device, the soil contacts the rolling part and makes it rotate. The rolling part drives the horizontal rotating shaft to rotate through the protective film, releasing the protective film to cover the soil surface and avoid secondary pollution.

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