CN114190119A

CN114190119A - Soil device and method for repairing cadmium-polluted soil

Info

Publication number: CN114190119A
Application number: CN202111512960.2A
Authority: CN
Inventors: 王成锋; 王建; 刘海峰
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-12-11
Filing date: 2021-12-11
Publication date: 2022-03-18

Abstract

The invention discloses a soil device and a soil repairing method for repairing cadmium-polluted soil, and relates to the technical field of soil repairing devices; in order to improve the processing efficiency; the vehicle body structure comprises a vehicle body, a loosening barrel is installed on the outer wall of one side of the vehicle body through a mounting frame, the outer wall of one side of the loosening barrel is rotatably connected to the inner wall of the mounting frame through a shaft, a motor is fixed on the outer wall of one side of the mounting frame through a screw, the loosening barrel is rotatably connected to the output end of the motor through the shaft, and a hollow support column is integrally arranged on the outer wall of the other side of the loosening barrel. According to the invention, by arranging the loosening teeth, the loosening barrel and other structures, the motor can be used for driving the loosening barrel to rotate, so that the soil is conveyed through the loosening teeth, and the drug delivery is facilitated; set up the mechanism of dosing, can utilize the liquid pump to take out the modifier or inhibitor in with the solution tank, send into the section of thick bamboo of loosening through the feed pipe in, and then by the synchronous output of mechanism of dosing, the purpose of dosing when having reached loose soil has promoted the treatment effeciency greatly.

Description

Soil device and method for repairing cadmium-polluted soil

Technical Field

The invention relates to the technical field of soil remediation devices, in particular to a soil remediation device and a remediation method for cadmium-contaminated soil.

Background

Cadmium is widely applied to the fields of electroplating industry, chemical industry, electronic industry, nuclear industry and the like. Cadmium is a byproduct of zinc smelting industry, is mainly used in batteries, dyes or plastic stabilizers, and is easier to be absorbed by crops than other heavy metals; a considerable amount of cadmium is discharged into the environment through waste gas, waste water and waste residues, so that pollution is caused; in order to treat cadmium pollution, a soil remediation device is often adopted for soil remediation, at present, in the soil remediation treatment, soil is treated by a rotary cultivator, and then medicines are applied, so that a certain treatment effect can be achieved, but the efficiency is low.

Through retrieval, the patent with the Chinese patent application number of CN201611032318.3 discloses a cadmium-polluted soil remediation method, wherein organic fertilizer is applied to cadmium-polluted soil per mu to prepare pretreated soil; mixing a conditioner for soil remediation and the pretreated soil according to the mass ratio of 1: 3-20 for the first time, spraying water, adding the conditioner for soil remediation for the second time after 20-30 days, and after uniformly mixing, repairing the cadmium-contaminated soil after 10-50 days; wherein the conditioner for soil remediation comprises: wollastonite, biogas residue, selenium nitrate, basic sodium aluminum carbonate, barium phosphate, dimethyl silicone polymer diquaternary ammonium salt, sugarcane ash, bamboo powder, methylisothiazolinone, sodium germanate, barium metaborate, (trimethylsilyl) phosphate, trimercapto-s-triazine and polyethylene dioxythiophene. The soil remediation method in the above patent has the following disadvantages: although a certain treatment effect can be achieved, the efficiency is low.

Disclosure of Invention

The invention aims to solve the defects in the prior art, and provides a soil device and a soil remediation method for remediation of cadmium-contaminated soil.

In order to achieve the purpose, the invention adopts the following technical scheme:

the soil device for repairing cadmium-polluted soil comprises a vehicle body, wherein a loosening barrel is mounted on the outer wall of one side of the vehicle body through a mounting frame, the outer wall of one side of the loosening barrel is rotatably connected to the inner wall of the mounting frame through a shaft, a motor is fixed on the outer wall of one side of the mounting frame through a screw, the loosening barrel is rotatably connected to the output end of the motor through the shaft, a hollow pillar is integrally arranged on the outer wall of the other side of the loosening barrel, a connector is mounted on the outer wall of one side of the mounting frame through a support, the hollow pillar is rotatably connected between the connector and the mounting frame in a sealing manner, a liquid supply pipe is mounted on the inner wall of one side of the connector in an inserting manner, a solution box is fixed on the outer wall of the top of the vehicle body through a screw, a liquid pump is arranged on the outer wall of one side of the solution box, and one end of the liquid supply pipe is connected to the output end of the liquid pump; the inner part of the loosening cylinder is communicated with the liquid supply pipe; the peripheral outer wall of the loosening cylinder is provided with loosening teeth and a dosing mechanism which are uniformly distributed.

Preferably: the drug delivery mechanisms all comprise elastic bags and two liquid outlet heads, through holes are formed in the circumferential outer wall of the loosening cylinder, positioning supports are welded to the inner wall of each through hole, sliding rods are connected to the inner walls of the positioning supports in a sliding mode, one end of each sliding rod is integrally provided with a limiting head, the other end of each sliding rod is welded to the outer wall of one side of the loosening tooth, a first sealing ring is welded to the inner wall of each through hole, each elastic bag is bonded between the first sealing ring and the corresponding loosening tooth, a leakage hole is formed in the outer wall of one side of each elastic bag, the position of each leakage hole is matched with the corresponding liquid outlet head, and each elastic bag is communicated with the inside of the corresponding liquid outlet head through the corresponding leakage hole; the normal state of the liquid outlet head is a closed state; the slide bar is of a hexagonal prism structure.

Further: the inside first spring that is provided with of elasticity bag, first spring one end run through the elasticity bag and weld in loose tooth one side outer wall, and the welding of the first spring other end has one-way closing plate, and the sealed sliding connection of one-way closing plate is in the slide bar outer wall, and the diameter of one-way closing plate is greater than the internal diameter of first sealing ring, it is provided with the second sealing ring to go out liquid head circumference inner wall integral type, and it has the second spring to go out liquid head one side inner wall bonding, and the one end welding of second spring has one-way sealed head, and one-way sealed head is round platform type structure, and the shape and the second sealing ring adaptation of one-way sealed head.

Further preferred is: the outer wall welding of mounting bracket one side has the fender, the fender be with loose arc structure of a section of thick bamboo adaptation.

As a preferable aspect of the present invention: the mounting panel is installed through the support frame to automobile body one side outer wall, and the conveying hard tube that is linear distribution is installed to the mounting panel inner wall, and conveying hard tube bottom is provided with the shower nozzle, and carries the hard tube top to connect in the solution tank bottom through conveying hose.

Further preferred as the invention: and a liquid valve for controlling the conduction quantity of the conveying hard pipe is arranged on the outer wall of one side of the conveying hard pipe.

As a still further scheme of the invention: the inner wall of one end of the support frame is rotatably connected with a flattening roller through a shaft.

On the basis of the scheme: the outer walls of the two sides of the vehicle body are fixed with the same pushing frame through screws, and the outer wall of the pushing frame is bonded with an anti-skid sleeve.

A method for repairing cadmium contaminated soil comprises the following steps:

s1: filling a modifier or an inhibitor into the solution tank;

s2: adjusting the liquid valve according to actual requirements;

s3: controlling the liquid pump to work to fill the modifying agent or the inhibitor in the solution tank into the loosening barrel;

s4: controlling the motor to work to drive the loosening barrel to rotate;

s5: the pushing frame is held to push the vehicle body to repair the soil.

The invention has the beneficial effects that:

1. according to the invention, by arranging the loosening teeth, the loosening barrel and other structures, the motor can be used for driving the loosening barrel to rotate, so that the soil is conveyed through the loosening teeth, and the drug delivery is facilitated; set up the mechanism of dosing, can utilize the liquid pump to take out the modifier or inhibitor in with the solution tank, send into the section of thick bamboo of loosening through the feed pipe in, and then by the synchronous output of mechanism of dosing, the purpose of dosing when having reached loose soil has promoted the treatment effeciency greatly.

2. Through setting up elasticity bag, play liquid head isotructure, can be when loose, loose tooth contact ground and receive the extrusion for the elasticity bag is out of liquid head and switches on under the direction of slide bar, makes its inside improver or inhibitor flow to soil in, has promoted the practicality.

3. The structure of the one-way sealing plate, the one-way sealing head and the like is arranged, so that the one-way conduction effect can be achieved, when the elastic bag is pressed, the internal volume of the elastic bag is reduced, the pressure is increased, the one-way sealing plate is kept in a sealing state for the first sealing ring under the support of the first spring, the one-way sealing head is ejected out of the second sealing ring under the action of the pressure, so that a modifier or an inhibitor in the elastic bag is output from the liquid outlet head, when the loosening teeth are separated from the ground, the loosening teeth are reset under the action of the elasticity of the elastic bag, the elastic bag is recovered from a deformation state, the volume of the elastic bag is increased, the one-way sealing plate is enabled to move towards one side of the loosening teeth, the modifier or the inhibitor in the loosening cylinder can be refilled into the elastic bag, and the one-way sealing head keeps sealing the liquid outlet head under the limitation of the second spring and the second sealing ring; the design is reliable and effective, the pesticide application precision is guaranteed, and the one-way sealing head can prevent soil from entering the elastic bag.

4. The splash of soil can be prevented by arranging the mud guard, the using effect is improved, the dosage can be supplemented according to the requirement by arranging the spray head, the conveying hose and other structures, and the practicability is improved; through setting up the flattening roller, be convenient for flatten soil after dosing, further promoted the practicality.

Drawings

FIG. 1 is a schematic structural diagram of a soil remediation device for cadmium-contaminated soil according to the present invention;

FIG. 2 is a schematic structural view of one side of a soil device for remediation of cadmium-contaminated soil according to the present invention;

FIG. 3 is a schematic cross-sectional structural view of a soil device connector for remediation of cadmium-contaminated soil according to the present invention;

FIG. 4 is a schematic structural diagram of a spring bag and a sliding rod of a soil device for repairing cadmium-contaminated soil according to the present invention;

fig. 5 is a schematic structural diagram of a section of the elastic bag of the soil device for repairing cadmium-contaminated soil according to the present invention.

In the figure: the device comprises a vehicle body 1, a support frame 2, a spray head 3, a liquid valve 4, an anti-skid sleeve 5, a leveling roller 6, a pushing frame 7, an installation plate 8, a conveying hose 9, a solution tank 10, a liquid pump 11, a liquid supply pipe 12, a conveying hard pipe 13, loosening teeth 14, a loosening barrel 15, an installation frame 16, a motor 17, a mudguard 18, a hollow pillar 19, a connector 20, a liquid outlet head 21, an elastic bag 22, a positioning support 23, a limiting head 24, a sliding rod 25, a one-way sealing head 26, a second sealing ring 27, a second spring 28, a first sealing ring 29, a one-way sealing plate 30 and a first spring 31.

Detailed Description

The technical solution of the present patent will be described in further detail with reference to the following embodiments.

Reference will now be made in detail to embodiments of the present patent, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present patent and are not to be construed as limiting the present patent.

In the description of this patent, it is to be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for the convenience of describing the patent and for the simplicity of description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the patent.

In the description of this patent, it is noted that unless otherwise specifically stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly and can include, for example, fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meaning of the above terms in this patent may be understood by those of ordinary skill in the art as appropriate.

Example 1:

a soil device for repairing cadmium contaminated soil, as shown in figures 1-5, comprises a vehicle body 1, the outer wall of one side of the vehicle body 1 is provided with a loosening cylinder 15 through a mounting frame 16, the outer wall of one side of the loosening cylinder 15 is rotatably connected with the inner wall of the mounting frame 16 through a shaft, and the outer wall of one side of the mounting rack 16 is fixed with a motor 17 through screws, the loosening cylinder 15 is rotationally connected with the output end of the motor 17 through a shaft, the outer wall of the other side of the loosening cylinder 15 is integrally provided with a hollow pillar 19, the outer wall of one side of the mounting frame 16 is provided with a connector 20 through a support, the hollow pillar 19 is hermetically and rotatably connected between the connector 20 and the mounting frame 16, a liquid supply pipe 12 is inserted and installed on the inner wall of one side of the connector 20, a solution tank 10 is fixed on the outer wall of the top of the vehicle body 1 through screws, a liquid pump 11 is arranged on the outer wall of one side of the solution tank 10, and one end of the liquid supply pipe 12 is connected to the output end of the liquid pump 11; the inner part of the loosening barrel 15 is communicated with the liquid supply pipe 12; the peripheral outer wall of the loosening cylinder 15 is provided with loosening teeth 14 and a dosing mechanism which are uniformly distributed; by arranging the loosening teeth 14, the loosening barrel 15 and other structures, the motor 17 can be used for driving the loosening barrel 15 to rotate, and then the loosening teeth 14 are used for conveying the soil, so that the administration is facilitated; set up the mechanism of dosing, can utilize liquid pump 11 to take out the modifier or inhibitor in with solution tank 10, send into in the loose section of thick bamboo 15 through feed pipe 12, and then by the synchronous output of mechanism of dosing, the purpose of dosing when having reached loose soil has promoted the treatment effeciency greatly.

To facilitate simultaneous administration; as shown in fig. 4 and 5, each of the drug delivery mechanisms includes an elastic bag 22 and two liquid outlet heads 21, a through hole is formed in the outer wall of the circumference of the loosening cylinder 15, a positioning support 23 is welded to the inner wall of the through hole, a sliding rod 25 is slidably connected to the inner wall of the positioning support 23, a limiting head 24 is integrally arranged at one end of the sliding rod 25, the other end of the sliding rod 25 is welded to the outer wall of one side of the loosening tooth 14, a first sealing ring 29 is further welded to the inner wall of the through hole, the elastic bag 22 is bonded between the first sealing ring 29 and the loosening tooth 14, a leak hole is formed in the outer wall of one side of the elastic bag 22, the position of the leak hole is matched with the liquid outlet head 21, and the elastic bag 22 is communicated with the inside of the liquid outlet head 21 through the leak hole; the liquid outlet head 21 is in a closed state in a normal state; the slide bar 25 is of a hexagonal prism structure; through setting up elasticity bag 22, play liquid head 21 isotructure, can be when loose, loose tooth 14 contact ground receives the extrusion for elasticity bag 22 is out of deformation under slide bar 25's direction, thereby makes liquid head 21 switch on, makes its inside improver or inhibitor flow to soil in, has promoted the practicality.

In order to improve reliability; as shown in fig. 4 and 5, a first spring 31 is arranged inside the elastic bag 22, one end of the first spring 31 penetrates through the elastic bag 22 and is welded on the outer wall of one side of the loose tooth 14, a one-way sealing plate 30 is welded at the other end of the first spring 31, the one-way sealing plate 30 is connected to the outer wall of the sliding rod 25 in a sealing and sliding manner, the diameter of the one-way sealing plate 30 is larger than the inner diameter of the first sealing ring 29, a second sealing ring 27 is integrally arranged on the circumferential inner wall of the liquid outlet head 21, a second spring 28 is bonded on the inner wall of one side of the liquid outlet head 21, a one-way sealing head 26 is welded at one end of the second spring 28, the one-way sealing head 26 is in a circular truncated cone structure, and the shape of the one-way sealing head 26 is matched with the second sealing ring 27; the one-way sealing plate 30, the one-way sealing head 26 and other structures are arranged, so that the one-way conduction effect can be achieved, when the elastic bag 22 is pressed, the internal volume of the elastic bag 22 is reduced, the pressure is increased, the one-way sealing plate 30 is kept in a sealing state against the first sealing ring 29 under the support of the first spring 31, the one-way sealing head 26 is ejected out of the second sealing ring 27 under the pressure, so that the improver or inhibitor in the resilient pocket 22 is discharged from the outlet head 21 and, when the loosening teeth 14 leave the ground, the loose teeth 14 are reset under the self elasticity of the elastic bag 22, and the elastic bag 22 is recovered from the deformation state, the volume of the elastic bag is increased, so that the one-way sealing plate 30 is displaced to one side of the loosening teeth 14, the modifying agent or the inhibitor in the loosening barrel 15 can be refilled into the elastic bag 22, while the one-way sealing head 26 keeps the sealing to the liquid outlet head 21 under the restriction of the second spring 28 and the second sealing ring 27; this design is reliable effective, has ensured the precision of dispensing, and one-way sealing head 26 can avoid soil to enter into in the elasticity bag 22.

In order to prevent soil splashing; as shown in fig. 1 and 3, a mudguard 18 is welded to the outer wall of one side of the mounting frame 16, and the mudguard 18 is of an arc structure matched with the loosening cylinder 15; through setting up fender 18, can prevent that soil from splashing, promoted the result of use.

In order to conveniently supplement the dosage according to the requirement; as shown in fig. 1, the mounting panel 8 is installed through support frame 2 to the outer wall of automobile body 1 one side, and the transport hard tube 13 that is linear distribution is installed to mounting panel 8 inner wall, and transport hard tube 13 bottom is provided with shower nozzle 3, and carries the hard tube 13 top to connect in the solution tank 10 bottom through delivery hose 9, through setting up shower nozzle 3, delivery hose 9 isotructure, can supplement the dose according to the demand, has promoted the practicality.

To facilitate control of the dosage; as shown in fig. 1, a liquid valve 4 for controlling the conducting quantity of the conveying hard pipe 13 is arranged on the outer wall of one side of the conveying hard pipe 13; through setting up liquid valve 4, can be convenient for control dosage, promoted adjustability and practicality.

To facilitate soil flattening after dosing; as shown in fig. 1 and 2, the inner wall of one end of the support frame 2 is rotatably connected with a flattening roller 6 through a shaft; through setting up flattening roller 6, be convenient for flatten soil after dosing, further promoted the practicality.

In order to improve the practicability; as shown in fig. 1 and 2, the outer walls of two sides of the vehicle body 1 are fixed with the same pushing frame 7 through screws, and the outer wall of the pushing frame 7 is bonded with an anti-skid sleeve 5; through setting up and pushing away frame 7 and antiskid cover 5, be convenient for push automobile body 1 operation of traveling, reached convenient laborsaving effect.

When the device is used, the loosening teeth 14, the loosening barrel 15 and other structures are arranged, the motor 17 can be used for driving the loosening barrel 15 to rotate, and then the loosening teeth 14 are used for conveying the soil, so that drug administration is facilitated; the administration mechanism is arranged, so that the modifying agent or the inhibitor in the solution tank 10 can be pumped out by the liquid pump 11, and is sent into the loosening cylinder 15 through the liquid supply pipe 12, and then is synchronously output by the administration mechanism, so that the aim of simultaneously administering the medicament in the loosened land is fulfilled, and the treatment efficiency is greatly improved; due to the arrangement of the elastic bag 22, the liquid outlet head 21 and other structures, when loosening, the loosening teeth 14 contact the ground and are extruded, so that the elastic bag 22 deforms under the guidance of the sliding rod 25, the liquid outlet head 21 is conducted, the modifier or inhibitor in the liquid outlet head flows out to the soil, and the practicability is improved; in addition, the one-way sealing plate 30, the one-way sealing head 26 and other structures are arranged to achieve the effect of one-way conduction, when the elastic bag 22 is pressed, the internal volume of the elastic bag 22 is reduced, the pressure is increased, the one-way sealing plate 30 is kept in a sealing state against the first sealing ring 29 under the support of the first spring 31, the one-way sealing head 26 is ejected out of the second sealing ring 27 under the pressure, so that the improver or inhibitor in the resilient pocket 22 is discharged from the outlet head 21 and, when the loosening teeth 14 leave the ground, the loose teeth 14 are reset under the self elasticity of the elastic bag 22, and the elastic bag 22 is recovered from the deformation state, the volume of the elastic bag is increased, so that the one-way sealing plate 30 is displaced to one side of the loosening teeth 14, the modifying agent or the inhibitor in the loosening barrel 15 can be refilled into the elastic bag 22, while the one-way sealing head 26 keeps the sealing to the liquid outlet head 21 under the restriction of the second spring 28 and the second sealing ring 27; the design is reliable and effective, the pesticide application accuracy is guaranteed, and the one-way sealing head 26 can prevent soil from entering the elastic bag 22; the spray head 3, the conveying hose 9, the liquid valve 4 and other structures are arranged, so that the dosage can be supplemented according to the requirement; flattening roller 6 can be after dosing flattening soil, has further promoted the practicality.

Example 2:

a method for repairing cadmium contaminated soil, as shown in fig. 1-5, comprising the steps of:

s1: filling a modifying agent or an inhibitor into the solution tank 10;

s2: adjusting the liquid valve 4 according to actual requirements;

s3: controlling the liquid pump 11 to work to charge the modifying agent or the inhibitor in the solution tank 10 into the loosening cylinder 15;

s4: the motor 17 is controlled to work to drive the loosening barrel 15 to rotate;

s5: the holding and pushing frame 7 pushes the vehicle body 1 to repair the soil.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. The utility model provides a prosthetic soil device for cadmium contaminated soil, includes automobile body (1), its characterized in that, an loosing section of thick bamboo (15) is installed through mounting bracket (16) to automobile body (1) one side outer wall, and the outer wall of loosing section of thick bamboo (15) one side is connected in mounting bracket (16) inner wall through the axle rotation, and mounting bracket (16) one side outer wall has motor (17) through the screw fixation, and loosing section of thick bamboo (15) rotates through the axle and is connected in the output of motor (17), the opposite side outer wall integral type of loosing section of thick bamboo (15) is provided with hollow pillar (19), mounting bracket (16) one side outer wall has connector (20) through the support mounting, and the sealed rotation of hollow pillar (19) is connected between connector (20) and mounting bracket (16), supply pipe (12) are installed in the grafting of connector (20) one side inner wall, and solution tank (10) are fixed through the screw to automobile body (1) top outer wall, a liquid pump (11) is arranged on the outer wall of one side of the solution tank (10), and one end of the liquid supply pipe (12) is connected to the output end of the liquid pump (11); the inner part of the loosening barrel (15) is communicated with the liquid supply pipe (12); the peripheral outer wall of the loosening barrel (15) is provided with loosening teeth (14) and a dosing mechanism which are uniformly distributed.

2. The soil device for remediation of soil contaminated with cadmium according to claim 1, the drug delivery mechanisms respectively comprise an elastic bag (22) and two liquid outlet heads (21), the circumferential outer wall of the loosening barrel (15) is provided with a through hole, the inner wall of the through hole is welded with a positioning support (23), the inner wall of the positioning support (23) is connected with a sliding rod (25) in a sliding manner, one end of the sliding rod (25) is integrally provided with a limiting head (24), the other end of the sliding rod (25) is welded on the outer wall of one side of the loosening tooth (14), the inner wall of the through hole is welded with a first sealing ring (29), the elastic bag (22) is adhered between the first sealing ring (29) and the loose teeth (14), a leakage hole is formed in the outer wall of one side of the elastic bag (22), the position of the leakage hole is matched with the liquid outlet head (21), and the elastic bag (22) is communicated with the interior of the liquid outlet head (21) through the leakage hole; the liquid outlet head (21) is in a closed state in a normal state; the sliding rod (25) is of a hexagonal prism structure.

3. The soil device for remediation of soil contaminated with cadmium according to claim 2, a first spring (31) is arranged in the elastic bag (22), one end of the first spring (31) penetrates through the elastic bag (22) and is welded on the outer wall of one side of the loose tooth (14), a one-way sealing plate (30) is welded at the other end of the first spring (31), the one-way sealing plate (30) is hermetically and slidably connected with the outer wall of the sliding rod (25), the diameter of the one-way sealing plate (30) is larger than the inner diameter of the first sealing ring (29), a second sealing ring (27) is integrally arranged on the inner wall of the circumference of the liquid outlet head (21), a second spring (28) is bonded on the inner wall of one side of the liquid outlet head (21), one end of the second spring (28) is welded with a one-way sealing head (26), the one-way sealing head (26) is of a round table structure, and the shape of the one-way sealing head (26) is matched with that of the second sealing ring (27).

4. The soil device for repairing cadmium-polluted soil according to claim 3, wherein a mudguard (18) is welded on the outer wall of one side of the mounting frame (16), and the mudguard (18) is of an arc-shaped structure matched with the loosening barrel (15).

5. The soil device for repairing cadmium-polluted soil according to claim 4, wherein a mounting plate (8) is mounted on the outer wall of one side of the vehicle body (1) through a support frame (2), conveying hard pipes (13) which are linearly distributed are mounted on the inner wall of the mounting plate (8), the bottom of each conveying hard pipe (13) is provided with a spray head (3), and the top of each conveying hard pipe (13) is connected to the bottom of the solution tank (10) through a conveying hose (9).

6. The soil device for repairing cadmium-contaminated soil according to claim 5, wherein the outer wall of one side of the conveying hard pipe (13) is provided with a liquid valve (4) for controlling the conducting amount of the conveying hard pipe (13).

7. The soil device for repairing cadmium-contaminated soil according to claim 6, wherein a flattening roller (6) is rotatably connected to the inner wall of one end of the support frame (2) through a shaft.

8. The soil device for repairing cadmium-contaminated soil according to any one of claims 1 to 7, wherein the same pushing frame (7) is fixed on the outer walls of the two sides of the vehicle body (1) through screws, and the anti-skid sleeve (5) is adhered on the outer wall of the pushing frame (7).

9. The method for repairing the cadmium-polluted soil is characterized by comprising the following steps of:

s1: filling modifying agent or inhibitor into the solution tank (10);

s2: adjusting a liquid valve (4) according to actual requirements;

s3: controlling the liquid pump (11) to work to fill the modifying agent or the inhibitor in the solution tank (10) into the loosening cylinder (15);

s4: the motor (17) is controlled to work to drive the loosening barrel (15) to rotate;

s5: the holding and pushing frame (7) pushes the vehicle body (1) to repair the soil.