Contaminated soil remediation machine and contaminated soil remediation method

Abstract

The invention relates to the technical field of soil remediation, in particular to a contaminated soil remediation machine and a contaminated soil remediation method.The contaminated soil remediation machine comprises a smashing box, a mixing box and a granulation box, the granulation box is fixedly installed at the bottom of the mixing box, and a granulation mechanism is rotationally installed in the granulation box. A motor drives a driving bevel gear to be matched with a second bevel gear meshed with the driving bevel gear to drive a transmission shaft rod to rotate, the rotating transmission shaft rod drives a granulation mechanism to operate and a transmission rod to rotate through the second bevel gear at the top, and the rotating transmission rod drives a stirring paddle to rotate to fully mix soil and a medicament; the rotating transmission rod drives the bevel gear to drive the linkage mechanism to operate, the operating linkage mechanism drives the two crushing rollers to rotate relatively through the face fluted disc connected in an engaged mode, soil to be remediated is crushed, the soil is subjected to uniform granulation treatment through the granulation mechanism, and therefore the efficient, uniform and continuous soil remediation target is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of soil remediation, and specifically to a contaminated soil remediation machine and a contaminated soil remediation method. Background Technique

[0002] With the development of modern industrial and agricultural production, the extensive use of chemical fertilizers and pesticides, as well as the continuous discharge of industrial production wastewater, urban sewage and waste, the problem of soil pollution has become increasingly serious. Soil pollution has the characteristics of concealment, latency, irreversibility and long-term nature. Its harm is often difficult to appear immediately, but once it breaks out, the consequences will be very serious. Soil pollution will damage the soil structure, affect the soil microbial community and biodiversity, leading to the imbalance of the ecological balance. Physical, chemical or biological remediation methods are used to repair contaminated soil and restore the normal functions of the soil.

[0003] However, there are still many defects in the actual use of similar structures. For example, when chemically or biologically remediating contaminated soil, due to the uneven particle size of the contaminated soil, the remediation effect is affected, and the chemicals sprayed during chemical remediation are prone to volatilization, reducing the chemical agent remediation effect and causing waste of chemical agents. For this reason, we propose a contaminated soil remediation machine and a contaminated soil remediation method to solve the existing problems. Summary of the Invention

[0004] The purpose of the present invention is to solve the disadvantages existing in the prior art, such as: when chemically or biologically remediating contaminated soil, due to the uneven particle size of the contaminated soil, the remediation effect is affected, and the chemicals sprayed during chemical remediation are prone to volatilization, reducing the chemical agent remediation effect and causing waste of chemical agents.

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

[0006] A contaminated soil remediation machine includes a crushing box, a mixing box and a granulating box. The granulating box is fixedly installed at the bottom of the mixing box. A granulating mechanism is rotatably installed inside the granulating box. The granulating mechanism includes an installation pipe fixedly installed inside the granulating box. A hole plate is fixedly installed at the top of the installation pipe. A protection box is rotatably connected to the top of the hole plate. Two first bevel gears are rotatably installed on both sides inside the protection box. One end of each of the two first bevel gears is fixedly installed with a pressure roller. A cutting rod is sleeved outside the installation pipe;

[0007] The crushing box is fixedly installed on one side of the top of the mixing box. An installation frame is inserted inside the crushing box. Two crushing rollers are rotatably installed inside the installation frame. A face gear disk is fixedly installed at one end of the crushing roller. A linkage mechanism is installed on one side of the installation frame through a shaft frame. The two crushing rollers are driven to rotate relatively to crush the contaminated soil by the cooperation of the linkage mechanism and the engaged face gear disk.

[0008] Further, a transmission shaft rod is rotatably installed inside the installation pipe. Two second bevel gears are respectively and fixedly installed at the top end and the bottom end of the transmission shaft rod. The second bevel gear at the top end of the transmission shaft rod extends into the protection box and is meshed and connected with the two first bevel gears.

[0009] Further, cleaning rods are fixedly installed on both sides of the top of the hole plate. A pin hole is formed inside the hole plate, and a pin block corresponding to the pin hole is fixedly installed on the outer side of the transmission shaft rod.

[0010] Further, a motor is fixedly installed at the bottom of the granulation box. A driving bevel gear is fixedly installed at the output end of the motor. The driving bevel gear is meshed and connected with the second bevel gear at the bottom end of the transmission shaft rod. A blanking valve is fixedly installed at the top inside the granulation box, and a blanking inclined plate is fixedly installed at the bottom inside the granulation box.

[0011] Further, a transmission rod is fixedly installed at the top of the second bevel gear at the top end of the transmission shaft rod. The transmission rod penetrates through the top of the mixing box. Stirring paddles are fixedly installed on the outer side of the transmission rod. A transmission bevel gear is fixedly installed at the top of the transmission rod. A controller is fixedly installed on the front of the mixing box.

[0012] Further, the linkage mechanism is composed of two linkage bevel gears and two linkage gears. One end of the two linkage bevel gears facing each other is respectively and fixedly connected with the two linkage gears through a shaft rod. The two linkage gears are respectively meshed and connected with the two surface gear disks. The bottoms of the two linkage bevel gears are both meshed and connected with the transmission bevel gear.

[0013] Further, a feed hopper is fixedly installed at the top of the crushing box. A protective ring is fixedly installed on the inner wall of the feed hopper. A spraying ring pipe is fixedly installed above the protective ring.

[0014] Further, a medicine box is fixedly installed on one side of the top of the mixing box. A water pump is installed on one side of the medicine box through a pipeline. The output end of the water pump is connected with the spraying ring pipe in a penetrating manner through a pipeline.

[0015] A method for repairing contaminated soil, the repair method comprising the following steps:

[0016] Step 1: Place the soil to be repaired inside the feed hopper. At the same time, start the water pump and the motor. The running water pump transports the repair liquid inside the medicine box to the spraying ring pipe, and sprays the repair liquid onto the soil through the spraying ring pipe;

[0017] Step 2: The motor drives the second bevel gear meshed with the driving bevel gear to drive the transmission shaft rod to rotate. The rotating transmission shaft rod drives the granulation mechanism to operate and the transmission rod to rotate through the second bevel gear at the top. The rotating transmission rod drives the linkage mechanism to operate through the transmission bevel gear at the top. The operating linkage mechanism drives two crushing rollers to rotate relatively through the meshed face gear disc. The two relatively rotating crushing rollers crush the soil, and the crushed soil enters the inside of the mixing box.

[0018] Step 3: The rotating transmission rod drives the stirring paddle to rotate. The rotating stirring paddle stirs the soil inside the mixing box, making the repair liquid and the soil evenly mixed. The mixed soil enters the inside of the granulation box by opening the discharge valve.

[0019] Step 4: The rotating transmission shaft rod drives the granulation mechanism meshed with it to operate through the second bevel gear at the top. The operating granulation mechanism granulates the soil and discharges the soil particles out of the granulation box through the discharge chute.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0021] The present invention crushes the soil to be repaired, mixes it with the repair liquid and solid medicament, and uses the granulation mechanism to perform uniform granulation treatment on the soil, so as to achieve the goal of efficient, uniform and continuous soil repair; sprays the repair liquid onto the soil by using a water pump and a spraying ring pipe to make it fully contact; then the motor drives the second bevel gear meshed with the driving bevel gear to drive the transmission shaft rod to rotate. The rotating transmission shaft rod drives the granulation mechanism to operate and the transmission rod to rotate through the second bevel gear at the top. The rotating transmission rod drives the stirring paddle to rotate, and the rotating transmission rod drives the linkage mechanism to operate through the transmission bevel gear at the top. The operating linkage mechanism drives two crushing rollers to rotate relatively through the meshed face gear disc. The two relatively rotating crushing rollers crush the soil, realizing the soil crushing and mixing operations, ensuring the uniform distribution of the repair liquid and solid medicament in the soil; then using the granulation mechanism to granulate and uniformly granulate the mixed soil, effectively reducing the volatilization of the repair liquid, and at the same time completing the continuous repair of the soil, effectively solving the problems of uneven soil particle size and waste of chemical volatilization in the traditional soil repair method. Description of the Drawings

[0022] Figure 1 is the front structural schematic diagram of the present invention;

[0023] Figure 2 is the internal structural schematic diagram of the present invention;

[0024] Figure 3 is the internal structural schematic diagram of the granulation mechanism of the present invention;

[0025] Figure 4Schematic diagram of the internal structure of the feed hopper of the present invention

[0026] Figure 5 Schematic diagram of the internal structure of the crushing box of the present invention;

[0027] Figure 6 Schematic diagram of the internal structure of the mixing box of the present invention;

[0028] Figure 7 Schematic diagram of the unfolded structure of the granulating mechanism of the present invention;

[0029] Figure 8 Schematic diagram of the internal structure of the granulating box of the present invention.

[0030] In the figure: 1. Feed hopper; 101. Protective ring; 102. Spraying ring pipe; 2. Crushing box; 201. Mounting frame; 202. Crushing roller; 203. Linkage mechanism; 2031. Linkage bevel gear; 2032. Linkage gear; 204. Face gear disk; 3. Mixing box; 301. Controller; 302. Stirring paddle; 303. Transmission rod; 304. Transmission bevel gear; 4. Granulating box; 401. Discharge valve; 402. Granulating mechanism; 4021. Mounting pipe; 4022. Hole plate; 4023. Protection box; 4024. First bevel gear; 4025. Pressing roller; 4026. Cutting rod; 403. Motor; 404. Driving bevel gear; 405. Transmission shaft rod; 406. Second bevel gear; 407. Discharge inclined plate; 5. Chemical agent box; 501. Water pump. Detailed implementation manners

[0031] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0032] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0033] In the description of the present invention, it should be noted that, unless otherwise clearly specified and defined, terms such as "installation", "equipped with", "connection", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] Please refer to Figure 1-8 , a contaminated soil repair machine proposed by the present invention includes a crushing box 2, a mixing box 3, and a granulating box 4. The granulating box 4 is fixedly installed at the bottom of the mixing box 3. A granulating mechanism 402 is rotatably installed inside the granulating box 4. The granulating mechanism 402 includes an installation pipe 4021 fixedly installed inside the granulating box 4. A hole plate 4022 is fixedly installed at the top of the installation pipe 4021. A protection box 4023 is rotatably connected to the top of the hole plate 4022. Two first bevel gears 4024 are rotatably installed on both sides inside the protection box 4023. One end of each of the two first bevel gears 4024 is fixedly installed with a pressure roller 4025. A cutting rod 4026 is sleeved outside the installation pipe 4021;

[0035] The crushing box 2 is fixedly installed on one side of the top of the mixing box 3. An installation frame 201 is inserted inside the crushing box 2. Two crushing rollers 202 are rotatably installed inside the installation frame 201. A surface gear disk 204 is fixedly installed at one end of the crushing roller 202. A linkage mechanism 203 is installed on one side of the installation frame 201 through a shaft frame. The two crushing rollers 202 are driven to rotate relatively by the cooperation of the linkage mechanism 203 and the engaged surface gear disk 204 to crush the contaminated soil;

[0036] It should be noted that: a material discharging port corresponding to the discharging valve 401 is opened at the bottom of one side of the mixing box 3, which is convenient for conveying soil into the granulating box 4; the top end of the protection box 4023 is fixedly connected to the bottom surface of the mixing box 3, so that the protection box 4023 remains stable when the hole plate 4022 rotates, and the two first bevel gears 4024 and the engaged second bevel gear 406 can be protected through the protection box 4023; the surface gear disk 204 is rotatably installed on one side of the installation frame 201, and the surface gear disk 204 is engaged with the linkage mechanism 203. The two crushing rollers 202 are driven to rotate relatively by the cooperation of the linkage mechanism 203 and the engaged surface gear disk 204, and the two relatively rotating crushing rollers 202 can extrude and crush the soil;

[0037] The two rotating first bevel gears 4024 drive the two pressure rollers 4025 to rotate. The two rotating pressure rollers 4025 extrude the soil on the top of the hole plate 4022, causing the soil to be extruded into strips through the hole plate 4022. The rotating hole plate 4022 can not only drive the soil strips to rotate through the cutting rod 4026, but also use the cutting rod 4026 to cut the soil strips into particles.

[0038] Please refer to Figure 6 - Figure 8 Inside the installation pipe 4021, a transmission shaft rod 405 is rotatably installed. At the top and bottom of the transmission shaft rod 405, two second bevel gears 406 are respectively fixedly installed. Among them, the second bevel gear 406 at the top of the transmission shaft rod 405 extends into the protection box 4023 and is meshed and connected with the two first bevel gears 4024;

[0039] It should be noted that: The installation pipe 4021 penetrates through the feeding inclined plate 407 and fixes the inclination angle of the feeding inclined plate 407. The transmission shaft rod 405 is protected through the installation pipe 4021 to prevent the transmission shaft rod 405 from being blocked during rotation.

[0040] Please refer to Figure 6 、 Figure 7 On both sides of the top of the hole plate 4022, cleaning rods are fixedly installed. A pin hole is opened inside the hole plate 4022, and a pin block corresponding to the pin hole is fixedly installed on the outer side of the transmission shaft rod 405;

[0041] It should be noted that: The cleaning rods are attached to the inner wall of the granulation box 4. When the hole plate 4022 rotates, the inner wall of the granulation box 4 is scraped and cleaned through the cleaning rods, ensuring the cleanliness of the inner wall of the granulation box 4; The transmission shaft rod 405 is connected with the pin hole inside the hole plate 4022 through the pin block on its outer side. It is convenient for the rotating transmission shaft rod 405 to drive the hole plate 4022 to rotate through the pin connection between the pin block and the pin hole.

[0042] Please refer to Figure 6 As shown in [reference figure], a motor 403 is fixedly installed at the bottom of the granulation box 4. A driving bevel gear 404 is fixedly installed at the output end of the motor 403, and the driving bevel gear 404 is meshed and connected with the second bevel gear 406 at the bottom of the transmission shaft rod 405. A feeding valve 401 is fixedly installed at the top inside the granulation box 4, and a feeding inclined plate 407 is fixedly installed at the bottom inside the granulation box 4;

[0043] It should be noted that: The motor 403 is electrically connected to the controller 301 through a wire, facilitating the staff to control the energized operation of the motor 403 through the controller 301. The rotating motor 403 drives the driving bevel gear 404 to rotate, and the rotating driving bevel gear 404 drives the transmission shaft rod 405 to rotate through the engaged second bevel gear 406; Opening the blanking valve 401 enables the soil inside the mixing tank 3 to enter the inside of the granulation tank 4 through the blanking port under the action of the rotating stirring paddle 302, completing the transportation of the soil; The blanking inclined plate 407 can guide the homogenized soil, facilitating the collection of the homogenized soil.

[0044] Please refer to Figure 1 、 Figure 5 and Figure 6 , at the top of the transmission shaft rod 405, a transmission rod 303 is fixedly installed on the top of the second bevel gear 406, and the transmission rod 303 penetrates through the top of the mixing tank 3. A stirring paddle 302 is fixedly installed on the outer side of the transmission rod 303, a transmission bevel gear 304 is fixedly installed on the top of the transmission rod 303, and a controller 301 is fixedly installed on the front of the mixing tank 3;

[0045] It should be noted that: A solid medicament adding port is provided at the top of the mixing tank 3, facilitating the addition of solid medicaments into the mixing tank 3. The rotating transmission shaft rod 405 drives the second bevel gear 406 and the transmission rod 303 at the top to rotate synchronously. The rotating second bevel gear 406 drives two pressing rollers 4025 to rotate through two engaged first bevel gears 4024; Rotating the transmission rod 303 drives the stirring paddle 302 to rotate. The rotating stirring paddle 302 can uniformly mix the soil, the repair liquid, and the solid medicaments inside the mixing tank 3, thereby improving the repair effect of the repair liquid and the solid medicaments on the soil; The transmission bevel gear 304 is located at the top of the mixing tank 3 and is meshed with the linkage mechanism 203.

[0046] Please refer to Figure 5 , the linkage mechanism 203 is composed of two linkage bevel gears 2031 and two linkage gears 2032. One end of the two linkage bevel gears 2031 opposite to each other is fixedly connected to the two linkage gears 2032 through a shaft rod respectively. The two linkage gears 2032 are respectively meshed with two face gears 204, and the bottoms of the two linkage bevel gears 2031 are both meshed with the transmission bevel gear 304;

[0047] It should be noted that: The rotating transmission rod 303 drives the two engaged linkage bevel gears 2031 to rotate in opposite directions through the transmission bevel gear 304. The two linkage bevel gears 2031 rotating in opposite directions drive the two linkage gears 2032 to rotate in opposite directions. The two linkage gears 2032 rotating in opposite directions drive the two pressing rollers 4025 to rotate through the two face gears 204, realizing power transmission.

[0048] Please refer toFigure 4 , Figure 5 , a feed hopper 1 is fixedly installed at the top of the crushing box 2, a protective ring 101 is fixedly installed on the inner wall of the feed hopper 1, and a spraying ring pipe 102 is fixedly installed above the protective ring 101;

[0049] It should be noted that: the spraying ring pipe 102 can be protected by the protective ring 101 to avoid damage to the spraying ring pipe 102 when the soil is put in, ensuring the safety of the spraying ring pipe 102. The spraying ring pipe 102 can be used to evenly spray the repair liquid on the surface of the put-in soil.

[0050] Please refer to Figure 2 - Figure 4 , a medicine box 5 is fixedly installed on one side of the top of the mixing box 3, a water pump 501 is installed on one side of the medicine box 5 through a pipeline, and the output end of the water pump 501 is connected to the spraying ring pipe 102 through a pipeline in a penetrating manner;

[0051] It should be noted that: the water pump 501 is electrically connected to the controller 301 through a wire. The water pump 501 is controlled by the controller 301 to be powered on and operate. A water pipe extending into the interior of the medicine box 5 is installed at the water inlet end of the water pump 501. When the water pump 501 is powered on and operates, the repair liquid stored in the medicine box 5 is extracted through the water pipe and transported to the spraying ring pipe 102 through the pipeline.

[0052] A method for repairing contaminated soil, the repair method includes the following steps:

[0053] Step 1: Put the soil to be repaired into the interior of the feed hopper 1. At the same time, start the water pump 501 and the motor 403 to operate through control. The water pump 501 is used to transport the repair liquid in the medicine box 5 to the spraying ring pipe 102. The repair liquid is sprayed onto the soil through the spraying ring pipe 102, so that the repair liquid is in full contact with the soil. The sprayed repair liquid can also play a role in dust reduction, improving the environmental protection performance of the device;

[0054] Step 2: Use the running motor 403 to drive the driving bevel gear 404 to cooperate with the engaged second bevel gear 406 to drive the transmission shaft rod 405 to rotate. The rotating transmission shaft rod 405 drives the granulation mechanism 402 to operate and the transmission rod 303 to rotate through the second bevel gear 406 at the top. The rotating transmission rod 303 drives the two linkage gears 2032 to rotate in opposite directions through the transmission bevel gear 304 at the top and the cooperation with the two engaged linkage bevel gears 2031. The two linkage gears 2032 rotating in opposite directions cooperate with the two surface gear discs 204 engaged therewith to drive the two crushing rollers 202 to rotate relatively. The two crushing rollers 202 rotating relatively crush the soil to avoid the caked soil from affecting the repair effect of the repair liquid and the solid medicine. The crushed soil enters the interior of the mixing box 3;

[0055] Step 3: Add solid medicament into the mixing tank 3 through the solid medicament dosing port at the top of the mixing tank 3, and then drive the stirring paddle 302 to rotate by the rotating transmission rod 303. The rotating stirring paddle 302 stirs the soil inside the mixing tank 3, so that the repair liquid, solid medicament and soil are evenly mixed. The mixed soil enters the inside of the granulation tank 4 through the opened blanking valve 401 and the blanking port provided at the bottom of the mixing tank 3 to complete the transportation of the soil.

[0056] Step 4: The rotating transmission shaft rod 405 drives the running granulation mechanism 402 connected in a meshing manner through the second bevel gear 406 at the top. The running granulation mechanism 402 granulates the soil, and discharges the soil particles out of the granulation tank 4 through the blanking inclined plate 407 to achieve continuous repair of the soil. The rotating transmission shaft rod 405 drives the pressing roller 4025 to rotate through the cooperation of the second bevel gear 406 at the top and two meshing first bevel gears 4024. At the same time, the rotating transmission shaft rod 405 drives the hole plate 4022 to rotate through the cooperation of the pin block and the pin hole. The rotating pressing roller 4025 extrudes the soil on the top of the hole plate 4022, and the rotating hole plate 4022 changes the position of the soil. At the same time, the soil is extruded into strips through the holes inside the hole plate 4022. The rotating hole plate 4022 drives the soil strip to rotate and cut through the cutting rod 4026, so as to cut the soil strip into small segments, thereby realizing the uniform granulation of the soil. The uniform granulation of the soil can not only reduce the volatilization of the repair liquid, improve the repair effect of the repair liquid on the soil, but also avoid soil caking and facilitate the decomposition and use of the repaired soil.

[0057] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

1. A contaminated soil remediation machine, comprising a crushing box (2), a mixing box (3) and a granulating box (4), characterized in that: The granulation box (4) is fixedly installed at the bottom of the mixing box (3). A granulation mechanism (402) is rotatably installed inside the granulation box (4). The granulation mechanism (402) includes a mounting pipe (4021) fixedly installed inside the granulation box (4). A hole plate (4022) is fixedly installed at the top of the mounting pipe (4021). A protection box (4023) is rotatably connected to the top of the hole plate (4022). Two first bevel gears (4024) are rotatably installed on both sides inside the protection box (4023). One end of each of the two first bevel gears (4024) is fixedly installed with a pressure roller (4025). A cutting rod (4026) is sleeved outside the mounting pipe (4021). The crushing box (2) is fixedly installed on one side of the top of the mixing box (3). A mounting frame (201) is inserted into the inside of the crushing box (2). Two crushing rollers (202) are rotatably installed inside the mounting frame (201). A face gear disk (204) is fixedly installed at one end of the crushing roller (202). A linkage mechanism (203) is installed on one side of the mounting frame (201) through a shaft frame. The two crushing rollers (202) are driven to rotate relatively by the cooperation of the linkage mechanism (203) and the engaged face gear disk (204) to crush the contaminated soil.

2. The soil remediation machine according to claim 1, wherein: A transmission shaft rod (405) is rotatably installed inside the mounting pipe (4021). Two second bevel gears (406) are fixedly installed at the top end and the bottom end of the transmission shaft rod (405) respectively. The second bevel gear (406) at the top end of the transmission shaft rod (405) extends into the protection box (4023) and is meshed with the two first bevel gears (4024).

3. The contaminated soil remediation machine according to claim 2, wherein: Cleaning rods are fixedly installed on both sides of the top of the hole plate (4022). A pin hole is formed inside the hole plate (4022), and a pin block corresponding to the pin hole is fixedly installed on the outside of the transmission shaft rod (405).

4. The soil remediation machine according to claim 2, wherein: A motor (403) is fixedly installed at the bottom of the granulation box (4). A driving bevel gear (404) is fixedly installed at the output end of the motor (403). The driving bevel gear (404) is meshed with the second bevel gear (406) at the bottom end of the transmission shaft rod (405). A feeding valve (401) is fixedly installed at the top inside the granulation box (4). A feeding inclined plate (407) is fixedly installed at the bottom inside the granulation box (4).

5. A contaminated soil remediation machine according to claim 2, characterized in that: A transmission rod (303) is fixedly installed at the top of the second bevel gear (406) at the top end of the transmission shaft rod (405). The transmission rod (303) penetrates to the top of the mixing box (3). Stirring paddles (302) are fixedly installed on the outside of the transmission rod (303). A transmission bevel gear (304) is fixedly installed at the top of the transmission rod (303). A controller (301) is fixedly installed on the front of the mixing box (3).

6. The soil remediation machine according to claim 5, characterized in that: The linkage mechanism (203) consists of two linkage bevel gears (2031) and two linkage gears (2032). One end of each of the two opposite linkage bevel gears (2031) is fixedly connected to the two linkage gears (2032) respectively through a shaft rod. The two linkage gears (2032) are meshed and connected to the two face gear discs (204) respectively, and the bottoms of the two linkage bevel gears (2031) are meshed and connected to the transmission bevel gear (304).

7. A contaminated soil remediation machine according to claim 1, characterized in that: A feed hopper (1) is fixedly installed at the top of the crushing box (2). A protective ring (101) is fixedly installed on the inner wall of the feed hopper (1), and a spraying ring pipe (102) is fixedly installed above the protective ring (101).

8. A contaminated soil remediation machine according to claim 7, characterized in that: A chemical agent tank (5) is fixedly installed on one side of the top of the mixing box (3). A water pump (501) is installed on one side of the chemical agent tank (5) through a pipeline. The output end of the water pump (501) is connected to the spraying ring pipe (102) through a pipeline in a penetrating manner.

9. A method for remediating contaminated soil, comprising a contaminated soil remediation machine as described in any one of claims 1-8, characterized in that, Its repair method includes the following steps: Step 1: Put the soil to be repaired into the inside of the feed hopper (1). At the same time, start the water pump (501) and the motor (403). The running water pump (501) transports the repair liquid inside the chemical agent tank (5) to the spraying ring pipe (102), and the repair liquid is sprayed onto the soil through the spraying ring pipe (102). Step 2: The motor (403) drives the driving bevel gear (404) to drive the transmission shaft rod (405) to rotate in cooperation with the engaged second bevel gear (406). The rotating transmission shaft rod (405) drives the granulation mechanism (402) to operate and the transmission rod (303) to rotate through the second bevel gear (406) at the top. The rotating transmission rod (303) drives the linkage mechanism (203) to operate through the transmission bevel gear (304) at the top. The running linkage mechanism (203) drives the two crushing rollers (202) to rotate relatively through the engaged face gear discs (204). The two relatively rotating crushing rollers (202) crush the soil, and the crushed soil enters the inside of the mixing box (3). Step 3: The rotating transmission rod (303) drives the stirring paddle (302) to rotate. The rotating stirring paddle (302) stirs the soil inside the mixing box (3) to make the repair liquid and the soil evenly mixed. The mixed soil enters the inside of the granulation box (4) by opening the blanking valve (401). Step 4: The rotating transmission shaft rod (405) drives the engaged granulation mechanism (402) to operate through the second bevel gear (406) at the top. The running granulation mechanism (402) granulates the soil and discharges the soil particles out of the inside of the granulation box (4) through the blanking inclined plate (407).

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