Soil ecological restoration device and method

Abstract

The invention belongs to the technical field of soil remediation devices, and particularly relates to a soil ecological remediation device and method.The soil ecological remediation device comprises a protective cover, a liquid injection device is mounted on the rear side of the protective cover, and the liquid injection device comprises a top plate, a liquid storage tank, a mounting plate, a liquid inlet pipe, an air cylinder, a C-shaped plate, a limiting column, a liquid injection assembly and an air injection assembly. By arranging the air injection assembly, after a liquid injection pipe is inserted into soil and injects a biological agent into the soil, a compression sleeve can gradually move into a compression box along with upward movement of a mounting plate driven by an air cylinder, and in the process, when air pressure reaches a threshold value of a second one-way valve, the second one-way valve is automatically opened; at the moment, compressed air in the compression sleeve can be sprayed into the liquid injection pipe through the air spraying pipe, so that soil adhered to the bottom end of the liquid injection pipe is blown away from the bottom end of the liquid injection pipe, and the bottom end of the liquid injection pipe is prevented from being blocked by the soil.

Description

Technical Field

[0001] The present invention belongs to the technical field of soil remediation devices, and particularly relates to a soil ecological remediation device and method. Background Art

[0002] Soil remediation devices are equipment used to treat and improve contaminated soil. Existing soil remediation devices generally include soil vapor extraction devices, thermal desorption devices, chemical remediation devices, bioremediation devices, and combined remediation devices, etc. Among them, bioremediation devices can be further divided into in-situ bioremediation and ex-situ bioremediation according to different remediation methods. In-situ bioremediation is to directly carry out remediation at the polluted site. By adding microbial agents, nutrients or adjusting soil environmental conditions to the soil, it promotes the growth and metabolism of microorganisms, or introduces specific microorganisms to degrade pollutants. Ex-situ bioremediation is to dig out the contaminated soil and transport it to a dedicated treatment site for remediation.

[0003] For land with a large contaminated area, in-situ bioremediation is generally used to remediate the soil. During the remediation, since it is necessary to inject microbial agents into the soil, a liquid injection pipe is required. However, due to the lack of a suitable protection device for the existing liquid injection pipe, during the process of repeatedly inserting the liquid injection pipe into the soil, the liquid injection pipe is easily blocked by the soil, thereby affecting the normal injection operation of the microbial agent. Summary of the Invention

[0004] In view of the above problems, the present invention provides a soil ecological remediation device and method to solve the problems raised in the above background art.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A soil ecological remediation device includes a protective cover. A liquid injection device is installed at the rear side of the protective cover. The liquid injection device includes a top plate, a liquid storage tank, a mounting plate, a liquid inlet pipe, a cylinder, a C-shaped plate, a limiting column, a liquid injection assembly, and a jetting assembly;

[0007] The number of the C-shaped plates, the limiting columns and the cylinders is two. The two C-shaped plates are symmetrically and fixedly installed at the rear side of the protective cover, and the openings of the two C-shaped plates face each other. The top plate and the mounting plate are both horizontally arranged between the two C-shaped plates. Two connecting plates are symmetrically and fixedly connected between the top of the mounting plate and the bottom of the top plate. The two limiting columns are respectively vertically inserted through and connected to the positions near both ends of the top of the top plate, and both ends of the limiting columns are fixedly connected to the inner walls of the top and bottom of the C-shaped plates. The liquid storage tank is installed on the top of the top plate. The liquid inlet pipe is horizontally installed at the bottom of the top plate, and a connecting pipe is connected between the middle position at the top of the liquid inlet pipe and the liquid storage tank. The connecting pipe is inserted through the top plate. The two cylinders are respectively vertically and fixedly connected to the inner walls of the tops of the C-shaped plates, and the bottom ends of the cylinders are fixedly connected to the top of the top plate. A rotary tillage assembly is installed inside the protective cover.

[0008] Furthermore, the number of the liquid injection assemblies is multiple, and the multiple liquid injection assemblies are evenly installed at the bottom of the liquid inlet pipe. The liquid injection assembly includes a liquid injection pipe, a telescopic pipe, a clamping plate, a spherical protrusion, a return spring and an annular pressing plate. The telescopic pipe is connected between the bottom of the liquid inlet pipe and the top end of the liquid injection pipe. The spherical protrusion is fixedly sleeved on the liquid injection pipe. The clamping plate is rotatably sleeved on the spherical protrusion, and the clamping plate is fixedly inserted through the mounting plate. An annular groove is formed inside the clamping plate. The annular pressing plate is horizontally located in the annular groove, and the annular pressing plate is fixedly sleeved on the spherical protrusion. The number of the return springs is multiple, and the multiple return springs are annularly distributed on the top and bottom of the annular pressing plate. One end of the return spring is fixedly connected to the annular pressing plate, and the other end of the return spring is fixedly connected to the inner wall of the top or bottom of the annular groove.

[0009] Furthermore, the number of the air jet assemblies is multiple, and the multiple air jet assemblies are arranged in one-to-one correspondence at the rear sides of the multiple liquid injection assemblies. The air jet assembly includes a compression box, a compression sleeve, an air jet pipe, a first one-way valve and a second one-way valve. The compression box is fixedly connected to the bottom of the top plate, and the bottom of the compression box is designed to be open. The first one-way valve is installed at a position near the top end at the rear side of the compression box. The outer contour of the compression sleeve matches the inner contour of the compression box, and the compression sleeve is slidably inserted through the bottom of the compression box. The bottom end of the compression sleeve is fixedly connected to the top of the mounting plate. The bottom end of the air jet pipe is connected to the second one-way valve. The second one-way valve is connected to the rear side of the liquid injection pipe. The top end of the air jet pipe is inserted through the mounting plate from bottom to top, and the air jet pipe is communicated with the inside of the compression sleeve.

[0010] Furthermore, the rotary tillage assembly includes a power shaft and harrow teeth. The power shaft is rotatably installed between the inner walls on both sides of the protective cover. The number of the harrow teeth is multiple, and the multiple harrow teeth are evenly installed on the surface of the power shaft.

[0011] Further, a clogging prevention component is connected to the bottom end of the liquid injection pipe. The clogging prevention component includes an insertion pipe, a fixing rod, a fixing shaft, and an auger blade. The insertion pipe is detachably connected to the bottom end of the liquid injection pipe. The fixing shaft is vertically located at the axis of the insertion pipe. The fixing rod is horizontally rotatably connected to the top end of the fixing shaft, and both ends of the fixing rod are fixedly connected to the inner wall of the insertion pipe. The auger blade is fixedly connected to the surface of the fixing shaft. The diameter of the auger blade matches the inner diameter of the insertion pipe, and the bottom end of the auger blade is close to the bottom end of the insertion pipe.

[0012] Further, the bottom end of the insertion pipe is designed with an inclined opening, and the inclined opening direction of the bottom end of the insertion pipe faces backward.

[0013] Further, both the telescopic pipe and the air injection pipe are made of soft rubber material. The maximum telescopic amount of the telescopic pipe is greater than the maximum telescopic amount of the return spring. The length of the air injection pipe is greater than the height of the compression sleeve.

[0014] Further, the first one-way valve only allows gas to flow into the compression box, and the second one-way valve only allows gas to flow into the liquid injection pipe.

[0015] Further, a connecting frame is fixedly connected to the top of the protective cover and is connected to the middle position at the top of the protective cover.

[0016] The present invention also provides a method for using the soil ecological restoration device described in any one of the above, including the following steps:

[0017] Step 1: Before use, first connect the protective cover to the tractor through the connecting frame, and at the same time connect the power shaft to the driving mechanism of the tractor to provide power for the power shaft.

[0018] Step 2: During use, as the tractor drives the protective cover forward, the driving mechanism of the tractor can drive the power shaft to rotate, so as to use the rake teeth on the power shaft to turn the soil.

[0019] Step 3: As the rake teeth turn the soil, the air cylinder can extend, driving the mounting plate to move downward. During this process, the insertion pipe can be inserted into the turned soil, and the biological bactericide in the liquid storage tank can be injected into the soil through the insertion pipe, thereby using the biological bactericide to regulate the soil and degrade the pollutants in the soil.

[0020] The technical effects and advantages of the present invention:

[0021] 1. The present invention is provided with a jet component. After the liquid injection pipe is inserted into the soil and the biological bactericide is injected into the soil, as the cylinder drives the mounting plate to move upward, the compression sleeve can gradually move into the compression box. During this process, when the air pressure reaches the threshold of the second one-way valve, the second one-way valve automatically opens. At this time, the compressed air in the compression sleeve can be sprayed into the liquid injection pipe through the air injection pipe, so as to blow away the soil adhering to the bottom end of the liquid injection pipe from the bottom end of the liquid injection pipe, thereby avoiding blockage of the bottom end of the liquid injection pipe by soil;

[0022] 2. The present invention is provided with an anti-blocking component. When the insertion pipe is inserted into the soil, the auger blade can play a certain protective role in the bottom end of the insertion pipe, thereby avoiding excessive soil from entering the insertion pipe. In addition, when the gas in the compression box enters the area where the auger blade is located through the air injection pipe, the spiral auger blade can accelerate the gas. When the biological bactericide passes through the area where the auger blade is located, the biological bactericide can push the auger blade to rotate, so as to push the soil entering the insertion pipe downward from the insertion pipe, thereby avoiding the accumulation of soil in the insertion pipe, and further cooperating with the blowing action of the gas to improve the cleaning effect of the insertion pipe;

[0023] 3. The present invention is provided with a return spring. During the process of inserting the liquid injection pipe into the soil, when the liquid injection pipe encounters a relatively hard object, the liquid injection pipe can deflect with the spherical protrusion as the center. By enabling the liquid injection pipe to deflect, it is ensured that during the process of inserting the liquid injection pipe into the soil, hard objects can be avoided within a certain range, thereby preventing the liquid injection pipe from being bent due to the obstruction of hard objects and ensuring the smooth injection of the biological bactericide. Description of the Drawings

[0024] Figure 1 is the first overall structural schematic diagram of the present invention;

[0025] Figure 2 is the second overall structural schematic diagram of the present invention;

[0026] Figure 3 is the three-dimensional schematic diagram of the top plate, mounting plate, cylinder, compression box, liquid injection pipe and other structures in the present invention;

[0027] Figure 4 is the three-dimensional schematic diagram of the mounting plate, liquid inlet pipe, air injection pipe, insertion pipe and other structures in the present invention;

[0028] Figure 5 is the three-dimensional schematic diagram of the telescopic pipe, liquid injection pipe, insertion pipe, spherical protrusion, return spring, auger blade and other structures in the present invention.

[0029] In the figure: 1, protective cover; 2, top plate; 3, liquid storage tank; 4, mounting plate; 5, liquid inlet pipe; 6, cylinder; 7, C-shaped plate; 8, limit post; 9, connecting plate; 10, connecting pipe; 11, liquid injection pipe; 12, telescopic pipe; 13, clamping plate; 14, spherical projection; 15, return spring; 16, annular pressing plate; 17, compression box; 18, compression sleeve; 19, air injection pipe; 20, first one-way valve; 21, second one-way valve; 22, power shaft; 23, rake teeth; 24, insertion tube; 25, fixed rod; 26, fixed shaft; 27, auger blade; 28, connecting frame. Detailed implementation mode

[0030] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0031] The present invention provides a Figures 1 to 5 soil ecological restoration device as shown, including a protective cover 1. A liquid injection device is installed at the rear side of the protective cover 1. The liquid injection device includes a top plate 2, a liquid storage tank 3, a mounting plate 4, a liquid inlet pipe 5, a cylinder 6, a C-shaped plate 7, a limit post 8, a liquid injection assembly, and an air injection assembly;

[0032] The number of the C-shaped plates 7, limit posts 8, and cylinders 6 is two each. The two C-shaped plates 7 are symmetrically and fixedly installed at the rear side of the protective cover 1, and the openings of the two C-shaped plates 7 face each other. The top plate 2 and the mounting plate 4 are both horizontally arranged between the two C-shaped plates 7. Two connecting plates 9 are symmetrically and fixedly connected between the top of the mounting plate 4 and the bottom of the top plate 2. The two limit posts 8 are respectively vertically inserted through and plugged at positions near both ends of the top of the top plate 2, and both ends of the limit post 8 are fixedly connected to the inner walls of the top and bottom of the C-shaped plate 7. The liquid storage tank 3 is installed on the top of the top plate 2, and a water pump is arranged in the liquid storage tank 3. The liquid inlet pipe 5 is horizontally installed at the bottom of the top plate 2, and a connecting pipe 10 is connected between the middle position of the top of the liquid inlet pipe 5 and the liquid storage tank 3. The connecting pipe 10 is inserted through and plugged on the top plate 2. The two cylinders 6 are respectively vertically and fixedly connected to the inner walls of the top of the C-shaped plate 7. The bottom end of the cylinder 6 is fixedly connected to the top of the top plate 2. A rotary tillage assembly is installed inside the protective cover 1. The rotary tillage assembly includes a power shaft 22 and rake teeth 23. The power shaft 22 is rotatably installed between the inner walls on both sides of the protective cover 1. The number of the rake teeth 23 is multiple, and the multiple rake teeth 23 are evenly installed on the surface of the power shaft 22. A connecting frame 28 is fixedly connected to the top of the protective cover 1 and is connected at the middle position of the top of the protective cover 1.

[0033] There are multiple liquid injection components, and the multiple liquid injection components are evenly installed at the bottom of the liquid inlet pipe 5. The liquid injection component includes a liquid injection pipe 11, a telescopic pipe 12, a clamping plate 13, a spherical protrusion 14, a return spring 15 and an annular pressing plate 16. The telescopic pipe 12 is connected between the bottom of the liquid inlet pipe 5 and the top of the liquid injection pipe 11. The spherical protrusion 14 is fixedly sleeved on the liquid injection pipe 11. The clamping plate 13 is rotatably sleeved on the spherical protrusion 14, and the clamping plate 13 is fixedly inserted through the mounting plate 4. An annular groove is formed inside the clamping plate 13. The annular pressing plate 16 is horizontally located in the annular groove, and the annular pressing plate 16 is fixedly sleeved on the spherical protrusion 14. There are multiple return springs 15, and the multiple return springs 15 are annularly distributed on the top and bottom of the annular pressing plate 16. One end of the return spring 15 is fixedly connected to the annular pressing plate 16, and the other end of the return spring 15 is fixedly connected to the top or bottom inner wall of the annular groove. Both the telescopic pipe 12 and the air injection pipe 19 are made of soft rubber material. The maximum telescopic amount of the telescopic pipe 12 is greater than the maximum telescopic amount of the return spring 15. The length of the air injection pipe 19 is greater than the height of the compression sleeve 18;

[0034] Before use, first connect the protective cover 1 to the tractor through the connecting frame 28, and at the same time connect the power shaft 22 to the driving mechanism of the tractor, so as to provide power for the power shaft 22. During use, as the tractor drives the protective cover 1 to move forward, the driving mechanism of the tractor can drive the power shaft 22 to rotate, so as to use the rake teeth 23 on the power shaft 22 to turn the soil. After the rake teeth 23 complete the operation of turning the soil, the air cylinder 6 can extend, so as to drive the mounting plate 4 to move downward. As the mounting plate 4 moves downward, the liquid injection pipe 11 can also gradually approach the turned soil under the drive of the mounting plate 4. When the liquid injection pipe 11 is inserted into the soil, the water pump in the liquid storage tank 3 can be started, so as to inject the biological bacteria agent in the liquid storage tank 3 into the soil through the connecting pipe 10, the liquid inlet pipe 5 and the liquid injection pipe 11, so as to use the biological bacteria agent to repair the soil;

[0035] In addition, by providing the return spring 15, during the process of inserting the liquid injection pipe 11 into the soil, when the liquid injection pipe 11 encounters a relatively hard object, the liquid injection pipe 11 can deflect with the spherical protrusion 14 as the center of the circle. During the deflection of the liquid injection pipe 11, the annular pressing plate 16 can deflect together with the spherical protrusion 14. As the annular pressing plate 16 deflects, the return spring 15 located in the clamping plate 13 can be compressed or stretched adaptively, so as to meet the deflection requirements of the liquid injection pipe 11. By enabling the liquid injection pipe 11 to deflect, it is ensured that during the process of inserting the liquid injection pipe 11 into the soil, relatively hard objects can be avoided within a certain range, thereby preventing the liquid injection pipe 11 from being bent due to the obstruction of hard objects and ensuring the smooth injection of the biological bacteria agent;

[0036] After the liquid injection pipe 11 completes the injection operation on the soil, as the air cylinder 6 drives the mounting plate 4 to move upward, the liquid injection pipe 11 can also be pulled out of the soil. During this process, the reset spring 15 can drive the liquid injection pipe 11 to return to the vertical state again, and the jetting assembly can jet gas into the liquid injection pipe 11, so that the soil adhering to the bottom opening of the liquid injection pipe 11 can be blown out from the bottom of the liquid injection pipe 11 by the airflow, thereby ensuring that the liquid injection pipe 11 will not be blocked by the soil.

[0037] As Figures 2 to 5 shown, the number of the jetting assemblies is multiple, and the multiple jetting assemblies are correspondingly arranged at the rear sides of the multiple liquid injection assemblies one by one. The jetting assembly includes a compression box 17, a compression sleeve 18, a jetting pipe 19, a first one-way valve 20 and a second one-way valve 21. The compression box 17 is fixedly connected to the bottom of the top plate 2, and the bottom of the compression box 17 is designed to be open. The first one-way valve 20 is installed at a position near the top end at the rear side of the compression box 17. The outer contour of the compression sleeve 18 matches the inner contour of the compression box 17, and the compression sleeve 18 is slidably inserted into the bottom of the compression box 17. The bottom end of the compression sleeve 18 is fixedly connected to the top of the mounting plate 4. The bottom end of the jetting pipe 19 is connected to the second one-way valve 21. The second one-way valve 21 is connected to the rear side of the liquid injection pipe 11. The top end of the jetting pipe 19 is inserted through the mounting plate 4 from bottom to top, and the jetting pipe 19 is communicated with the inside of the compression sleeve 18. The first one-way valve 20 only allows gas to flow into the compression box 17, and the second one-way valve 21 only allows gas to flow into the liquid injection pipe 11;

[0038] After the liquid injection pipe 11 is inserted into the soil and the biological bactericide is injected into the soil, as the air cylinder 6 drives the mounting plate 4 to move upward, the compression sleeve 18 can gradually move into the compression box 17. During this process, the first one-way valve 20 can always remain closed, and the air in the compression box 17 is gradually compressed. When the air pressure reaches the threshold value of the second one-way valve 21, the second one-way valve 21 automatically opens. At this time, the compressed air in the compression sleeve 18 can be sprayed into the liquid injection pipe 11 through the jetting pipe 19, so as to blow away the soil adhering to the bottom end of the liquid injection pipe 11 from the bottom end of the liquid injection pipe 11, thereby avoiding the blockage of the bottom end of the liquid injection pipe 11 by the soil;

[0039] When the cylinder 6 drives the mounting plate 4 to move downward, as the compression sleeve 18 moves downward, the compression sleeve 18 can evacuate the compression box 17. During this process, the second one-way valve 21 can remain closed, thus preventing some of the soil adhering to the bottom end of the liquid injection pipe 11 from moving upward to the deep part of the liquid injection pipe 11 under the suction force generated by the air injection pipe 19. As the compression sleeve 18 continues to move downward, the air pressure in the compression box 17 can gradually decrease. When the external air pressure is greater than the air pressure in the compression box 17, the first one-way valve 20 can open, enabling the external air to smoothly enter the compression box 17 through the first one-way valve 20, thereby ensuring the consistency of the air pressure inside and outside the compression box 17.

[0040] As Figure 5 shown, a clogging prevention assembly is connected to the bottom end of the liquid injection pipe 11. The clogging prevention assembly includes an insertion pipe 24, a fixing rod 25, a fixing shaft 26, and an auger blade 27. The insertion pipe 24 is detachably connected to the bottom end of the liquid injection pipe 11. The fixing shaft 26 is vertically located at the axis of the insertion pipe 24. The fixing rod 25 is horizontally rotatably connected to the top end of the fixing shaft 26, and both ends of the fixing rod 25 are fixedly connected to the inner wall of the insertion pipe 24. The auger blade 27 is fixedly connected to the surface of the fixing shaft 26. The diameter of the auger blade 27 matches the inner diameter of the insertion pipe 24, and the bottom end of the auger blade 27 is close to the bottom end of the insertion pipe 24;

[0041] By providing the clogging prevention assembly, when the insertion pipe 24 is inserted into the soil, the auger blade 27 can play a certain protective role in the bottom end of the insertion pipe 24, thus preventing too much soil from entering the insertion pipe 24. In addition, when the gas in the compression box 17 enters the liquid injection pipe 11 through the air injection pipe 19, as the air flow moves downward, when the gas enters the area where the auger blade 27 is located, the spiral auger blade 27 can accelerate the gas, enabling the gas to accelerate through the auger blade 27 and spray out from the bottom of the insertion pipe 24, thereby making it easier for the soil adhering to the bottom of the insertion pipe 24 to be blown out by the gas and preventing the bottom end of the insertion pipe 24 from being blocked;

[0042] In addition, when the biological bacteria agent passes through the area where the auger blade 27 is located, the thrust of the biological bacteria agent on the auger blade 27 can cause the auger blade 27 to drive the fixing shaft 26 to rotate together. As the auger blade 27 rotates, the auger blade 27 can also push the soil entering the insertion pipe 24 downward from the insertion pipe 24, thus preventing the soil from accumulating in the insertion pipe 24, and further cooperating with the blowing action of the gas to improve the cleaning effect on the insertion pipe 24.

[0043] As Figures 2 to 5 shown, the bottom end of the insertion pipe 24 is designed with an inclined mouth, and the inclined mouth direction of the bottom end of the insertion pipe 24 faces backward;

[0044] By designing the bottom end of the cannula 24 as an inclined opening, the injection aperture at the bottom end of the cannula 24 can be increased, the probability of the cannula 24 being blocked can be reduced, and thus the injection effect of the biological bacteria agent can be ensured.

[0045] The present invention also provides a method of using the soil ecological restoration device described in any one of the above, including the following steps:

[0046] Step 1: Before use, first connect the protective cover 1 to the tractor through the connecting frame 28, and at the same time connect the power shaft 22 to the driving mechanism of the tractor, so as to provide power for the power shaft 22.

[0047] Step 2: During use, as the tractor drives the protective cover 1 forward, the driving mechanism of the tractor can drive the power shaft 22 to rotate, so as to turn the soil with the rake teeth 23 on the power shaft 22.

[0048] Step 3: As the rake teeth 23 turn the soil, the cylinder 6 can extend, thereby driving the mounting plate 4 to move downward. During this process, the cannula 24 can be inserted into the turned soil, and the biological bacteria agent in the liquid storage tank 3 can be injected into the soil through the cannula 24, so as to regulate the soil with the biological bacteria agent and degrade the pollutants in the soil.

[0049] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it.

Claims

1. A soil ecological restoration device, comprising a protective cover (1), characterized in that: A liquid injection device is installed on the rear side of the protective cover (1), and the liquid injection device comprises a top plate (2), a liquid storage tank (3), a mounting plate (4), a liquid inlet pipe (5), a cylinder (6), a C-shaped plate (7), a limiting column (8), a liquid injection assembly and an injection assembly; the number of the C-shaped plate (7), the limiting column (8) and the cylinder (6) is two, the two C-shaped plates (7) are symmetrically fixedly installed on the rear side of the protective cover (1), and the openings of the two C-shaped plates (7) are directly opposite, the top plate (2) and the mounting plate (4) are both horizontally arranged between the two C-shaped plates (7), and two connecting plates (9) are symmetrically fixedly connected between the top of the mounting plate (4) and the bottom of the top plate (2), and the two limiting plates (9) are connected to the bottom of the top plate (4). The limiting columns (8) are respectively vertically inserted through the top of the top plate (2) near the two ends, and the two ends of the limiting columns (8) are respectively fixedly connected to the top and bottom inner walls of the C-shaped plate (7). The liquid storage tank (3) is installed on the top of the top plate (2), the liquid inlet pipe (5) is horizontally installed at the bottom of the top plate (2), and a connecting pipe (10) is connected between the top middle position of the liquid inlet pipe (5) and the liquid storage tank (3). The connecting pipe (10) is inserted through the top plate (2), and the two cylinders (6) are respectively vertically fixedly connected to the top inner wall of the C-shaped plate (7), and the bottom end of the cylinder (6) is fixedly connected to the top of the top plate (2). A rotary tillage assembly is installed on the inner side of the protective cover (1).

2. The soil ecological restoration device according to claim 1, characterized in that: There are multiple liquid injection components, and the multiple liquid injection components are evenly installed at the bottom of the liquid inlet pipe (5). The liquid injection components include a liquid injection pipe (11), a telescopic pipe (12), a clamping plate (13), a spherical protrusion (14), a reset spring (15) and an annular pressure plate (16). The telescopic pipe (12) is connected between the bottom of the liquid inlet pipe (5) and the top of the liquid injection pipe (11). The spherical protrusion (14) is fixedly sleeved on the liquid injection pipe (11). The clamping plate (13) is rotatably sleeved on the spherical protrusion (14), and the clamping plate (13) It is fixedly inserted through the mounting plate (4), an annular groove is provided on the inner side of the clamping plate (13), the annular pressure plate (16) is horizontally located in the annular groove, and the annular pressure plate (16) is fixedly sleeved on the spherical protrusion (14), there are multiple return springs (15), and the multiple return springs (15) are distributed in annular shapes on the top and bottom of the annular pressure plate (16), one end of the return spring (15) is fixedly connected to the annular pressure plate (16), and the other end of the return spring (15) is fixedly connected to the inner wall of the top or bottom of the annular groove.

3. The soil ecological restoration device according to claim 2, characterized in that: There are multiple jet assemblies, and the multiple jet assemblies are arranged one by one on the rear side of the multiple injection assemblies. The jet assemblies include a compression box (17), a compression sleeve (18), an jet pipe (19), a first one-way valve (20) and a second one-way valve (21). The compression box (17) is fixedly connected to the bottom of the top plate (2), and the bottom of the compression box (17) is designed to be open. The first one-way valve (20) is installed at a position close to the top of the rear side of the compression box (17). The compression sleeve (18) The outer contour matches the inner contour of the compression box (17), and the compression sleeve (18) is slidably inserted into the bottom of the compression box (17), the bottom end of the compression sleeve (18) is fixedly connected to the top of the mounting plate (4), the bottom end of the jet pipe (19) is connected to the second one-way valve (21), the second one-way valve (21) is connected to the rear side of the injection pipe (11), the top end of the jet pipe (19) penetrates and is inserted into the mounting plate (4) from bottom to top, and the jet pipe (19) is connected to the inner side of the compression sleeve (18).

4. The soil ecological restoration device according to claim 3 is characterized in that: The rotary tillage assembly comprises a power shaft (22) and rake teeth (23); the power shaft (22) is rotatably mounted between inner walls on both sides of the protective cover (1); there are a plurality of rake teeth (23), and the plurality of rake teeth (23) are evenly mounted on the surface of the power shaft (22).

5. The soil ecological restoration device according to claim 4, characterized in that: The bottom end of the injection tube (11) is connected to an anti-blocking component, which comprises a cannula (24), a fixing rod (25), a fixing shaft (26) and an auger blade (27). The cannula (24) is detachably connected to the bottom end of the injection tube (11), the fixing shaft (26) is vertically located at the axis of the cannula (24), the fixing rod (25) is horizontally rotatably connected to the top end of the fixing shaft (26), and both ends of the fixing rod (25) are fixedly connected to the inner wall of the cannula (24), the auger blade (27) is fixedly connected to the surface of the fixing shaft (26), the diameter of the auger blade (27) matches the inner diameter of the cannula (24), and the bottom end of the auger blade (27) is close to the bottom end of the cannula (24).

6. The soil ecological restoration device according to claim 5, characterized in that: The bottom end of the insertion tube (24) is designed with an oblique opening, and the oblique opening of the bottom end of the insertion tube (24) faces backwards.

7. The soil ecological restoration device according to claim 6, characterized in that: The telescopic tube (12) and the air injection tube (19) are both made of soft rubber. The maximum telescopic amount of the telescopic tube (12) is greater than the maximum telescopic amount of the return spring (15). The length of the air injection tube (19) is greater than the height of the compression sleeve (18).

8. The soil ecological restoration device according to claim 7, characterized in that: The first one-way valve (20) only allows gas to flow into the compression box (17), and the second one-way valve (21) only allows gas to flow into the liquid injection tube (11).

9. The soil ecological restoration device according to claim 8, characterized in that: A connecting frame (28) is fixedly connected to the top of the protective cover (1) and is connected at a middle position on the top of the protective cover (1).

10. A method for using the soil ecological restoration device according to claim 9, characterized in that: The following steps are involved: Step 1: Before use, the protective cover (1) is connected to the traction machine through the connecting frame (28), and the power shaft (22) is connected to the driving mechanism of the traction machine, so as to provide power for the power shaft (22); Step 2: When in use, as the tractor drives the protective cover (1) forward, the driving mechanism of the tractor can drive the power shaft (22) to rotate, so that the rake teeth (23) on the power shaft (22) are used to turn the soil; Step 3: As the rake teeth (23) turn the soil, the cylinder (6) can extend, thereby driving the mounting plate (4) to move downward. During this process, the insertion tube (24) can be inserted into the turned soil, and the biological agent in the liquid storage tank (3) can be injected into the soil through the insertion tube (24), thereby using the biological agent to regulate the soil and degrade pollutants in the soil.

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