Method and apparatus for remediation of soil

Abstract

The application discloses a kind of soil remediation method and equipment, including equipment main body, the equipment main body is sequentially opened with crushing cavity and guide cavity from top to bottom, the equipment main body is sequentially opened with linkage cavity and mixing cavity from top to bottom, the guide cavity is connected with crushing cavity and mixing cavity and is communicated, the equipment main body is provided with the feed hopper being communicated with crushing cavity, and the equipment main body is provided with crushing assembly.The application can automatically complete soil crushing, suction collection of dust in crushing process, reciprocating motion of screening plate, reciprocating vibration of guide plate, multiple quantitative input of curing agent and sufficient stirring and mixing of soil and curing agent by switching the rotation direction of the output shaft of the repair motor, which is simple and convenient to operate, integrates multiple functions, and improves work efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of farmland soil remediation, and in particular to a soil remediation method and device. BACKGROUND

[0002] Cadmium and lead have high biological toxicity, latent persistence and irreversibility, are more easily adsorbed by plants than other heavy metals in soil, and are retained in plants, which can cause toxic effects on plants. For many years, cases of damage to human health caused by cadmium and lead pollution have been reported, and therefore, in the field of farmland protection and remediation, the remediation of cadmium and lead contaminated soil faces severe challenges.

[0003] Currently, heavy metal contaminated lime soils have relatively stable forms of heavy metals, and such soils are mostly remediated by solidification. In the process of remediation of soil by solidification, the soil needs to be pretreated by crushing and screening, and then a solidifying agent is added to the soil for mixing and stirring to contact and react with the soil. However, the existing remediation equipment has a single function, and the crushing and screening of soil and the mixing of the solidifying agent and soil need to be implemented by different devices, which is low in work efficiency and inconvenient to use. SUMMARY

[0004] The present application aims to solve the problems in the prior art and provides a soil remediation method and device.

[0005] To achieve the above-mentioned purpose, the present application adopts the following technical solutions:

[0006] A soil remediation device comprises a device main body, a crushing cavity and a material guiding cavity are sequentially arranged in the device main body from top to bottom, a linkage cavity and a mixing cavity are sequentially arranged in the device main body from top to bottom, the material guiding cavity is in communication with the crushing cavity and the mixing cavity, a feeding hopper in communication with the crushing cavity is arranged on the device main body, a crushing assembly is arranged on the device main body, a screening and dust collecting assembly connected with the crushing assembly is arranged on the device main body, a mixing assembly connected with the crushing assembly is arranged on the device main body, and an agent feeding and upward pushing assembly connected with the screening and dust collecting assembly is arranged on the device main body.

[0007] Preferably, the crushing assembly comprises a fourth rotating shaft rotatably connected between the inner walls of the two ends of the crushing cavity, a crushing roller is fixedly installed on the outer side wall of the fourth rotating shaft, a plurality of first crushing teeth are uniformly distributed and fixedly installed on the outer side wall of the crushing roller, a plurality of second crushing teeth are fixedly installed on the inner walls of the two sides of the crushing cavity, the two ends of the fourth rotating shaft respectively penetrate the inner walls of the two ends of the crushing cavity, a second bevel gear is fixedly installed at one end of the fourth rotating shaft in the linkage cavity, a second rotating shaft is rotatably connected to the inner top of the linkage cavity, a first bevel gear is fixedly installed on the outer side wall of the second rotating shaft and engaged with the second bevel gear, a repairing motor is fixedly installed on the top of the equipment body, and one end of the second rotating shaft penetrates the inner top of the linkage cavity and is fixedly connected with the output shaft of the repairing motor.

[0008] Preferably, the screening and dust collecting assembly comprises a circular block fixedly installed on the other end of the fourth rotating shaft and located outside the equipment body, a fixed block is fixedly installed on the outer side wall of the equipment body, a dust collecting cylinder is fixedly installed on the side wall of the fixed block close to the circular block, a second connecting rod is slidably connected to the outer wall of one end of the dust collecting cylinder and penetrates the dust collecting cylinder, a dust collecting plug is fixedly installed on one end of the second connecting rod in the dust collecting cylinder and slidably connected with the inner wall of the dust collecting cylinder, a first connecting pipe and a second connecting pipe are arranged on the dust collecting cylinder and communicate with the interior of the dust collecting cylinder, one end of the first connecting pipe and the second connecting pipe communicating with the dust collecting cylinder is located on the side of the dust collecting plug away from the second connecting rod, the end of the first connecting pipe away from the dust collecting cylinder communicates with the crushing cavity, a dust collecting box is arranged on the equipment body, the end of the second connecting pipe away from the dust collecting cylinder communicates with the dust collecting box, an outer extension block is fixedly installed on one end of the second connecting rod outside the dust collecting cylinder, two first connecting rods are slidably connected to the outer extension block and penetrate the outer extension block, the same fan-shaped block is fixedly installed on one end of the two first connecting rods outside the outer extension block, a rotating rod is rotatably connected to the side wall of the circular block close to the fan-shaped block, the first spring is fixedly connected between the fan-shaped block and the outer extension block, the two guide rods are fixedly connected between the inner walls of the two sides of the material guiding cavity, the same screening plate is slidably sleeved on the two guide rods and fixedly connected with the outer extension block, and the two second springs are fixedly connected between the screening plate and the inner wall of the side of the material guiding cavity away from the fixed block.

[0009] Preferably, the mixing assembly comprises a mixing cylinder penetratingly arranged at the inner bottom of the linkage cavity and rotatably connected therewith, a third bevel gear is fixedly installed on the outer side wall of the mixing cylinder and engaged with the second bevel gear, the fourth bevel gear of the mixing cylinder is fixedly installed on one end of the second rotating shaft extending into the mixing cylinder, two rotating rods are rotatably connected to the mixing cylinder and penetrate the mixing cylinder, the fifth bevel gears are fixedly installed on one end of the two rotating rods in the mixing cylinder and engaged with the fourth bevel gear, and a plurality of mixing rods are fixedly installed on the outer side walls of the two rotating rods and located outside the mixing cylinder.

[0010] Preferably, the agent feeding and lifting assembly comprises an agent feeding box fixedly installed on the bottom of the overhanging block, one end of the two first connecting rods below the overhanging block is fixedly installed with the same agent feeding plug in sliding connection with the inner wall of the agent feeding box, a third connecting pipe and a fourth connecting pipe in communication with the inside of the agent feeding box are arranged on the agent feeding box, one end of the third connecting pipe and the fourth connecting pipe in communication with the agent feeding box is below the agent feeding plug, the end of the third connecting pipe away from the agent feeding box is in communication with the mixing cavity, the overhanging block is provided with a resisting rod in sliding connection therewith, one end of the resisting rod above the overhanging block is fixedly installed with a square block in fixed connection with the fan-shaped block, the two side inner walls of the material guiding cavity are rotatably connected with a third rotating shaft, the outer side wall of the third rotating shaft is fixedly installed with a material guiding plate below the screening plate, the two side inner walls of the material guiding cavity are rotatably connected with a first rotating shaft below the material guiding plate, and the outer side wall of the first rotating shaft is fixedly installed with a top plate below the resisting rod.

[0011] Preferably, the first connecting pipe, the second connecting pipe, the third connecting pipe and the fourth connecting pipe are all provided with a one-way valve.

[0012] Preferably, the resisting rod is of an "L" shape, and the bottom of the material guiding plate is fixedly installed with a counterweight.

[0013] A soil remediation method, comprising the following steps:

[0014] In the first step, the remediation motor is started to rotate the output shaft clockwise, the soil to be remediated is put into the crushing cavity through the feeding hopper, the put-in soil is crushed by the crushing assembly, and the crushed soil is screened by the reciprocating screening plate of the screening and dust collecting assembly, while the dust generated in the crushing process is sucked and collected;

[0015] In the second step, after the soil is crushed and screened, the output shaft of the remediation motor is rotated counterclockwise, the material guiding plate is reciprocatingly lifted up and dropped down by the agent feeding and lifting assembly, so as to avoid the soil remaining on the surface of the material guiding plate, and the solidifying agent is quantitatively and repeatedly input into the mixing cavity, and the soil and the solidifying agent in the mixing cavity are fully mixed by the mixing assembly.

[0016] The beneficial effects of the present application are as follows:

[0017] By arranging the crushing assembly, the soil put into the crushing cavity can be automatically crushed when the output shaft of the remediation motor rotates clockwise, so that the soil is refined and the solidifying agent can easily contact and react with the soil.

[0018] By setting the screening dust collecting assembly, the dust generated in the crushing process can be automatically sucked and collected when the motor output shaft rotates clockwise, and the screening plate can reciprocate, so that the crushed soil passes quickly and is not easy to block, and the working efficiency is improved.

[0019] By setting the agent feeding upper top assembly, the guide plate can reciprocate up and down by a certain angle when the motor output shaft rotates counterclockwise, so that the guide plate is vibrated, the surface of the guide plate with residual soil is effectively avoided, and the quantitative solidifying agent can be automatically and repeatedly input into the mixing cavity, which is convenient to use.

[0020] By setting the mixing assembly, the mixing rod can rotate around the mixing cylinder axis and the axis of the rotating rod after the motor is started, so that the soil and the solidifying agent in the mixing cavity can be fully mixed, and the soil repair effect is improved.

[0021] The present application can automatically complete the functions of soil crushing, dust suction and collection during crushing, reciprocating movement of the screening plate, reciprocating vibration of the guide plate, multiple quantitative input of the solidifying agent, and sufficient mixing of the soil and the solidifying agent by switching the rotation direction of the motor output shaft, which is simple and convenient to operate, integrates multiple functions, and significantly improves the efficiency and quality of land repair work. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 A perspective structural schematic view of a soil repair device is provided for the present application;

[0023] Figure 2 A perspective structural schematic view of the inside of the crushing cavity, the linkage cavity, the guide cavity and the mixing cavity is provided for the present application;

[0024] Figure 3 A perspective structural schematic view of the inside of the dust collecting cylinder and the agent feeding box is provided for the present application;

[0025] Figure 4 A perspective view of the structure at the screening plate is provided for the present application;

[0026] Figure 5 A bottom view of the structure at the screening plate is provided for the present application.

[0027] In the figure: 1 device main body, 2 feed hopper, 3 repair motor, 4 first adapter pipe, 5 fixed block, 6 round block, 7 rotating rod, 8 dust collecting cylinder, 9 second adapter pipe, 10 dust collecting box, 11 agent conveying box, 12 third adapter pipe, 13 top plate, 14 first rotating shaft, 15 fourth adapter pipe, 16 agent storage box, 17 discharge pipe, 18 overhanging block, 19 fan-shaped block, 20 crushing cavity, 21 linkage cavity, 22 first crushing tooth, 23 material guiding cavity, 24 mixing cavity, 25 second crushing tooth, 26 crushing roller, 27 first bevel gear, 28 second bevel gear, 29 third bevel gear, 30 second rotating shaft, 31 mixing rod, 32 rotating rod, 33 mixing cylinder, 34 fourth bevel gear, 35 fifth bevel gear, 36 counterweight, 37 material guiding plate, 38 third rotating shaft, 39 guide rod, 40 screening plate, 41 fourth rotating shaft, 42 abutting rod, 43 agent conveying plug, 44 first spring, 45 first connecting rod, 46 second connecting rod, 47 dust collecting plug, 48 second spring, 49 square block. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all embodiments.

[0029] REFERENCE Figures 1-5 A soil remediation method and device, comprising a device main body 1, a crushing cavity 20 and a material guiding cavity 23 are sequentially arranged in the device main body 1 from top to bottom, a linkage cavity 21 and a mixing cavity 24 are sequentially arranged in the device main body 1 from top to bottom, the material guiding cavity 23 is in communication with the crushing cavity 20 and the mixing cavity 24, a feed hopper 2 in communication with the crushing cavity 20 is arranged on the device main body 1, a crushing assembly is arranged on the device main body 1, the crushing assembly comprises a fourth rotating shaft 41 rotatably connected between the inner walls of both ends of the crushing cavity 20, a crushing roller 26 is fixedly installed on the outer side wall of the fourth rotating shaft 41, a plurality of first crushing teeth 22 are uniformly distributed and fixedly installed on the outer side wall of the crushing roller 26, a plurality of second crushing teeth 25 are fixedly installed on the inner walls of both sides of the crushing cavity 20, both ends of the fourth rotating shaft 41 respectively penetrate the inner walls of both ends of the crushing cavity 20, a second bevel gear 28 located in the linkage cavity 21 is fixedly installed on one end of the fourth rotating shaft 41, a second rotating shaft 30 is rotatably connected to the inner top of the linkage cavity 21, a first bevel gear 27 meshingly connected with the second bevel gear 28 is fixedly installed on the outer side wall of the second rotating shaft 30, a repair motor 3 is fixedly installed on the top of the device main body 1, one end of the second rotating shaft 30 penetrates the inner top of the linkage cavity 21 and is fixedly connected with the output shaft of the repair motor 3;

[0030] The equipment body 1 is provided with a screening dust collection assembly connected with the crushing assembly. The screening dust collection assembly comprises a round block 6 fixedly installed on the other end of the fourth rotating shaft 41 and located outside the equipment body 1. A fixed block 5 is fixedly installed on the outer side wall of the equipment body 1. A dust collection cylinder 8 is fixedly installed on the side wall of the fixed block 5 close to the round block 6. A second connecting rod 46 is throughly arranged on the outer wall of the end of the dust collection cylinder 8 away from the fixed block 5 and is in sliding connection with the dust collection cylinder 8. A dust collection plug 47 is fixedly installed on the end of the second connecting rod 46 in the dust collection cylinder 8 and is in sliding connection with the inner wall of the dust collection cylinder 8. A first connecting pipe 4 and a second connecting pipe 9 are arranged on the dust collection cylinder 8 and are in communication with the inside of the dust collection cylinder 8. The ends of the first connecting pipe 4 and the second connecting pipe 9 in communication with the dust collection cylinder 8 are located on the side of the dust collection plug 47 away from the second connecting rod 46. The end of the first connecting pipe 4 away from the dust collection cylinder 8 is in communication with the crushing cavity 20. A dust collection box 10 is arranged on the equipment body 1. The end of the second connecting pipe 9 away from the dust collection cylinder 8 is in communication with the dust collection box 10. An outer extension block 18 is fixedly installed on the end of the second connecting rod 46 outside the dust collection cylinder 8. Two first connecting rods 45 are throughly arranged on the outer extension block 18 and are in sliding connection with the outer extension block 18. The same fan-shaped block 19 is fixedly installed on the ends of the two first connecting rods 45 outside the outer extension block 18. A rotating rod 7 is rotatably connected to the side wall of the round block 6 close to the fan-shaped block 19. The first spring 44 is fixedly connected between the fan-shaped block 19 and the outer extension block 18. The two guide rods 39 are fixedly connected between the inner walls of the two sides of the material guide cavity 23. The same screening plate 40 is slidingly sleeved on the two guide rods 39 and is fixedly connected with the outer extension block 18. The two second springs 48 are fixedly connected between the screening plate 40 and the inner wall of the side of the material guide cavity 23 away from the fixed block 5.

[0031] The equipment body 1 is provided with a mixing assembly connected with the crushing assembly. The mixing assembly comprises a mixing cylinder 33 throughly arranged on the bottom of the linkage cavity 21 and rotatably connected with the linkage cavity 21. The third bevel gear 29 is fixedly installed on the outer side wall of the mixing cylinder 33 and is in meshing connection with the second bevel gear 28. The fourth bevel gear 34 is fixedly installed on the end of the second rotating shaft 30 extending into the mixing cylinder 33. The two rotating rods 32 are throughly arranged on the mixing cylinder 33 and are rotatably connected with the mixing cylinder 33. The fifth bevel gear 35 is fixedly installed on the end of each of the two rotating rods 32 in the mixing cylinder 33 and is in meshing connection with the fourth bevel gear 34. The plurality of mixing rods 31 are fixedly installed on the outer side walls of the two rotating rods 32 and are located outside the mixing cylinder 33.

[0032] The main body 1 of the equipment is equipped with an infusion top assembly connected to the screening and dust collection assembly. The infusion top assembly includes an infusion box 11 fixedly installed on the bottom of the extension block 18. Two first connecting rods 45 are fixedly installed at their ends below the extension block 18, with an infusion plug 43 slidably connected to the inner wall of the infusion box 11. The infusion box 11 is equipped with a third connecting pipe 12 and a fourth connecting pipe 15 communicating with its interior. The ends of the third connecting pipe 12 and the fourth connecting pipe 15 connected to the infusion box 11 are both located below the infusion plug 43. The end of the third connecting pipe 12 away from the infusion box 11 is connected to the mixing chamber 24. The main body 1 of the equipment is equipped with a storage tank 16. The end of the fourth connecting pipe 15 away from the infusion box 11 is connected to the storage tank 16. A push rod 42 is slidably connected to the extension block 18. A block 49, which is fixedly connected to the fan-shaped block 19, is fixedly installed at one end of the push rod 42 above the extension block 18. A third rotating shaft 38 is rotatably connected between the two inner walls of the guide cavity 23. A guide plate 37 located below the screening plate 40 is fixedly installed on the outer wall of the third rotating shaft 38. A first rotating shaft 14 located below the guide plate 37 is rotatably connected between the two inner walls of the guide cavity 23. A top plate 13 located below the push rod 42 is fixedly installed on the outer wall of the first rotating shaft 14. One-way valves are provided in the first connecting pipe 4, the second connecting pipe 9, the third connecting pipe 12 and the fourth connecting pipe 15. The push rod 42 is "L" shaped. A counterweight block 36 is fixedly installed at the bottom of the guide plate 37.

[0033] A soil remediation method includes the following steps:

[0034] The first step is to start the repair motor 3 and rotate its output shaft clockwise. The soil to be repaired is fed into the crushing chamber 20 through the feed hopper 2. The soil is crushed by the crushing component. The screening and dust collection component makes the screening plate 40 reciprocate to screen the crushed soil. At the same time, the dust generated during the crushing process is sucked up and collected.

[0035] The second step involves crushing and screening the soil, then rotating the output shaft of the repair motor 3 counterclockwise. Through the agent delivery and lifting assembly, the guide plate 37 is repeatedly lifted and lowered to prevent soil residue from remaining on the surface of the guide plate 37. At the same time, a fixed amount of curing agent is quantitatively and repeatedly fed into the mixing chamber 24. Through the mixing assembly, the soil and curing agent entering the mixing chamber 24 are thoroughly mixed.

[0036] When using this invention, the repair motor 3 is started to rotate its output shaft clockwise, thereby causing the second rotating shaft 30, the first bevel gear 27, and the fourth bevel gear 34 (attached) to rotate clockwise. Figure 2clockwise rotation, the soil with the repaired soil is put into the crushing cavity 20 through the feeding hopper 2, the first bevel gear 27 is connected with the second bevel gear 28 when rotating, which can make the second bevel gear 28, the fourth rotating shaft 41, the crushing roller 26, the circular block 6 and the rotating rod 7 on the circular block 6 rotate (as shown in the attached drawings) Figure 1 counterclockwise rotation, the crushing roller 26 rotates to drive the first crushing teeth 22 to rotate, and through the mutual cooperation with the second crushing teeth 25, the soil put into the crushing cavity 20 can be crushed, and the crushed soil falls onto the guide plate 37 through the screening plate 40 and finally rolls along the surface of the guide plate 37 into the mixing cavity 24;

[0037] When the rotating rod 7 on the circular block 6 rotates clockwise, the rotating rod 7 first contacts the vertical surface of the sector block 19 and then separates from it. During the mutual contact between the rotating rod 7 and the vertical surface of the sector block 19, the rotation of the rotating rod 7 drives the sector block 19 and the overhanging block 18 to move away from the dust collecting cylinder 8. The movement of the overhanging block 18 drives the screening plate 40 and the second connecting rod 46 to move, so that the second spring 48 is compressed, and the dust collecting plug 47 slides away from the fixed block 5, thereby generating a suction effect, so that the dust generated in the crushing process is sucked into the dust collecting cylinder 8 through the first connecting pipe 4. When the rotating rod 7 and the sector block 19 are in contact and then are not in contact, the elastic force generated by the compression of the second spring 48 drives the screening plate 40, the overhanging block 18, the sector block 19, the second connecting rod 46 and the dust collecting plug 47 to move towards the fixed block 5, thereby generating a squeezing effect, so that the dust sucked into the dust collecting cylinder 8 is squeezed into the dust collecting box 10 through the second connecting pipe 9. Through the reciprocating screening plate 40, the crushed soil can pass through quickly and is not easy to be blocked;

[0038] After the soil crushing is completed, the output shaft of the repairing motor 3 is rotated counterclockwise, thereby driving the second rotating shaft 30, the first bevel gear 27 and the fourth bevel gear 34 (as shown in the attached drawings) Figure 2 counterclockwise rotation, the soil with the repaired soil is put into the crushing cavity 20 through the feeding hopper 2, the first bevel gear 27 is connected with the second bevel gear 28 when rotating, which can make the second bevel gear 28, the fourth rotating shaft 41, the crushing roller 26, the circular block 6 and the rotating rod 7 on the circular block 6 rotate (as shown in the attached drawings) Figure 1 clockwise rotation, the rotating rod 7 first contacts the curved surface of the sector block 19 and then does not contact it during the clockwise rotation, and during the mutual contact between the rotating rod 7 and the curved surface of the sector block 19, the dust collecting plug 47 cannot continue to move away from the fixed block 5 due to the initial state of the dust collecting plug 47 (as shown in the attached drawings) Figure 3State) to the left, that is, the second connecting rod 46, the overhanging block 18 and the sector block 19 cannot move to the left, and through the continued rotation of the rotating rod 7, the sector block 19 can be moved to the direction close to the overhanging block 18, the first spring 44 is compressed, the sector block 19 drives the square block 49, the abutting rod 42, the first connecting rod 45 and the agent delivery plug 43 (attached Figure 3 State) downward, when the abutting rod 42 moves downward, the abutting rod 42 will be in contact with the upper surface of the left end of the top plate 13 and make it move downward, through the setting of the first rotating shaft 14, the right end of the top plate 13 can be lifted up, and the top plate 13 with the right end lifted up will be in contact with the lower surface of the guide plate 37, thereby making the guide plate 37 and the counterweight block 36 rotate counterclockwise around the third rotating shaft 38 by a certain angle, and the agent delivery plug 43 moving downward will extrude the curing agent in the agent delivery box 11 through the third connecting pipe 12 into the mixing cavity 24;

[0039] When the rotating rod 7 is in contact with the curved surface of the sector block 19 clockwise and changes to no longer be in contact, through the elastic force generated by the compression of the first spring 44, the sector block 19, the square block 49, the abutting rod 42, the first connecting rod 45 and the agent delivery plug 43 can move upward, when the abutting rod 42 moves upward, through the gravity of the counterweight block 36, the guide plate 37 and the top plate 13 can rotate clockwise around the third rotating shaft 38, so that the soil adhered to the upper part of the guide plate 37 can be vibrated to avoid residue, when the agent delivery plug 43 moves upward, the curing agent in the agent storage tank 16 will be sucked into the agent delivery box 11 through the fourth connecting pipe 15, so as to reciprocate.

[0040] In the process of the second bevel gear 28 rotating clockwise, through the meshing connection of the second bevel gear 28 and the third bevel gear 29, the third bevel gear 29, the mixing cylinder 33, the fifth bevel gear 35, the rotating rod 32 and the plurality of mixing rods 31 can all rotate clockwise around the axis direction of the mixing cylinder 33, and the second rotating shaft 30 coincides with the axis of the mixing cylinder 33, and the fourth bevel gear 34 on the second rotating shaft 30 rotates counterclockwise and is meshed with the fifth bevel gear 35, so that the fifth bevel gear 35 rotates around the axis direction of the mixing cylinder 33 while also rotating around the axis direction of the rotating rod 32, that is, the mixing rod 31 rotates around the axis direction of the mixing cylinder 33 and also rotates around the axis direction of the rotating rod 32, so that the soil and the curing agent in the mixing cavity 24 can be fully mixed and stirred to make them fully react, so as to realize the repair of the soil.

[0041] The above is only the preferred specific implementation of the present application, but the protection scope of the present application is not limited to this, any person skilled in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A soil remediation apparatus comprising an apparatus body (1), characterised in that, The device body (1) is sequentially provided with a crushing cavity (20) and a material guiding cavity (23) from top to bottom, and is sequentially provided with a linkage cavity (21) and a mixing cavity (24) from top to bottom, the material guiding cavity (23) is in communication with the crushing cavity (20) and the mixing cavity (24), the device body (1) is provided with a feeding hopper (2) in communication with the crushing cavity (20), the device body (1) is provided with a crushing assembly, the crushing assembly comprises a fourth rotating shaft (41) rotatably connected between the inner walls of the two ends of the crushing cavity (20), a crushing roller (26) is fixedly installed on the outer side wall of the fourth rotating shaft (41), a plurality of first crushing teeth (22) are uniformly distributed and fixedly installed on the outer side wall of the crushing roller (26), a plurality of second crushing teeth (25) are fixedly installed on the inner walls of the two sides of the crushing cavity (20), the two ends of the fourth rotating shaft (41) respectively penetrate through the inner walls of the two ends of the crushing cavity (20), a second bevel gear (28) is fixedly installed on one end of the fourth rotating shaft (41) and located in the linkage cavity (21), a second rotating shaft (30) is rotatably connected to the inner top of the linkage cavity (21), a first bevel gear (27) is fixedly installed on the outer side wall of the second rotating shaft (30) and meshingly connected with the second bevel gear (28), a repairing motor (3) is fixedly installed on the top of the device body (1), one end of the second rotating shaft (30) penetrates through the inner top of the linkage cavity (21) and is fixedly connected with the output shaft of the repairing motor (3), the device body (1) is provided with a screening and dust collecting assembly connected with the crushing assembly, the screening and dust collecting assembly comprises a circular block (6) fixedly installed on the other end of the fourth rotating shaft (41) and located outside the device body (1), a fixed block (5) is fixedly installed on the outer side wall of the device body (1), a dust collecting cylinder (8) is fixedly installed on the side wall of the fixed block (5) close to the circular block (6), a second connecting rod (46) is penetratingly arranged on the outer wall of one end of the dust collecting cylinder (8) and slidably connected with the dust collecting cylinder (8), a dust collecting plug (47) is fixedly installed on one end of the second connecting rod (46) located in the dust collecting cylinder (8) and slidably connected with the inner wall of the dust collecting cylinder (8), a first connecting pipe (4) and a second connecting pipe (9) are arranged on the dust collecting cylinder (8) and in communication with the inside of the dust collecting cylinder (8), one end of the first connecting pipe (4) and the second connecting pipe (9) in communication with the dust collecting cylinder (8) is located on the side of the dust collecting plug (47) away from the second connecting rod (46), one end of the first connecting pipe (4) away from the dust collecting cylinder (8) is in communication with the crushing cavity (20), the device body (1) is provided with a dust collecting box (10), one end of the second connecting pipe (9) away from the dust collecting cylinder (8) is in communication with the dust collecting box (10), one end of the second connecting rod (46) located outside the dust collecting cylinder (8) is fixedly installed with an outward extending block (18), two first connecting rods (45) are penetratingly arranged on the outward extending block (18) and slidably connected with the outward extending block (18),Two first connecting rods (45) are fixedly connected with a same sector block (19) at one end outside the overhanging block (18), the circular block (6) is rotatably connected with a rotating rod (7) on one side wall close to the sector block (19), the sector block (19) and the overhanging block (18) are fixedly connected with a first spring (44), two guide rods (39) are fixedly connected between the inner walls of the two sides of the material guiding cavity (23), the two guide rods (39) are slidably sleeved with a same screening plate (40) fixedly connected with the overhanging block (18), the screening plate (40) and the inner wall of one side of the material guiding cavity (23) away from the fixed block (5) are fixedly connected with two second springs (48), the equipment main body (1) is provided with a mixing assembly connected with the crushing assembly, and the equipment main body (1) is provided with an agent feeding and lifting assembly connected with the screening and dust collecting assembly.

2. A soil remediation apparatus as claimed in claim 1, wherein, The mixing assembly comprises a mixing cylinder (33) arranged through the bottom of the linkage cavity (21) and rotationally connected with the linkage cavity (21), a third bevel gear (29) fixedly installed on the outer side wall of the mixing cylinder (33) and meshingly connected with the second bevel gear (28), one end of the second rotating shaft (30) extending into the mixing cylinder (33) and fixedly installed with a fourth bevel gear (34) of the mixing cylinder (33), two rotating rods (32) arranged through the mixing cylinder (33) and rotationally connected with the mixing cylinder (33), one end of each of the two rotating rods (32) fixedly installed with a fifth bevel gear (35) meshingly connected with the fourth bevel gear (34), and a plurality of mixing rods (31) fixedly installed on the outer side wall of each of the two rotating rods (32) and located outside the mixing cylinder (33).

3. A soil remediation apparatus as claimed in claim 2, wherein, The agent feeding upper assembly comprises an agent feeding box (11) fixedly installed on the bottom of the overhanging block (18), one end of each of the two first connecting rods (45) fixedly installed with the same agent feeding plug (43) slidingly connected with the inner wall of the agent feeding box (11), the agent feeding box (11) being provided with a third connecting pipe (12) and a fourth connecting pipe (15) in communication with the inside of the agent feeding box (11), one end of each of the third connecting pipe (12) and the fourth connecting pipe (15) in communication with the agent feeding box (11) being located below the agent feeding plug (43), one end of the third connecting pipe (12) away from the agent feeding box (11) being in communication with the mixing cavity (24), the device main body (1) being provided with a storage tank (16), one end of the fourth connecting pipe (15) away from the agent feeding box (11) being in communication with the storage tank (16), the overhanging block (18) being provided with a resisting rod (42) arranged through the overhanging block (18) and slidingly connected with the overhanging block (18), one end of the resisting rod (42) fixedly installed with a square block (49) fixedly connected with the sector block (19), the material guiding cavity (23) being rotationally connected with a third rotating shaft (38) between the inner walls on the two sides of the material guiding cavity (23), the third rotating shaft (38) being fixedly installed with a material guiding plate (37) below the screening plate (40) on the outer side wall of the third rotating shaft (38), the material guiding cavity (23) being rotationally connected with a first rotating shaft (14) below the material guiding plate (37) between the inner walls on the two sides of the material guiding cavity (23), and the first rotating shaft (14) being fixedly installed with a top plate (13) below the resisting rod (42) on the outer side wall of the first rotating shaft (14).

4. A soil remediation apparatus as claimed in claim 3, wherein, The first connecting pipe (4), the second connecting pipe (9), the third connecting pipe (12) and the fourth connecting pipe (15) are each provided with a one-way valve.

5. A soil remediation apparatus as claimed in claim 4, wherein, The resisting rod (42) is "L"-shaped, and the bottom of the material guiding plate (37) is fixedly installed with a counterweight (36).

6. A soil restoration method using the soil restoration apparatus according to claim 5, characterized by, The method comprises the following steps: In a first step, the repair motor (3) is started to rotate the output shaft clockwise, the soil to be repaired is put into the crushing cavity (20) through the feeding hopper (2), the soil is crushed by the crushing assembly, the crushed soil is screened by the reciprocating movement of the screening plate (40) through the screening and dust collecting assembly, and the dust generated in the crushing process is sucked and collected. Second, the soil broken after screening, make the output shaft of the repair motor (3) counterclockwise rotation, through the input agent on the top assembly, the guide plate (37) is reciprocating upward and fall, avoid the soil remaining on the surface of the guide plate (37), while the quantitative and multiple input solidification agent into the mixing chamber (24), through the mixing assembly, the soil and solidification agent into the mixing chamber (24) are mixed thoroughly.

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