Soil remediation device

Abstract

The application discloses a soil remediation device, which comprises a cabinet, a vertical partition plate arranged in the middle of the cabinet along the length direction, an upper space in the cabinet is divided into a front cavity and a rear cavity by the partition plate, a conveying belt arranged horizontally in the front cavity along the length direction of the cabinet, a supporting plate arranged below the upper layer of the conveying belt, a separation roller arranged horizontally above the conveying belt, an end of the separation roller close to the side wall of the cabinet is closed, and an end of the separation roller close to the partition plate is open, the direction of the linear velocity of the lowermost end of the separation roller is the same as the advancing direction of the conveying belt, so that the stones with soil adhered on the conveying belt are extruded, and the soil on the surface of the stones is extruded into the steel cylinder, a scraper inserted into the open end of the separation roller, so that the soil in the steel cylinder is scraped, and a stirring cylinder arranged below the open end of the separation roller is used for receiving the scraped soil in the steel cylinder.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of soil remediation. More particularly, the present application relates to a soil remediation device. BACKGROUND

[0002] At present, most soil remediation devices directly add contaminated soil into the device, then add reagents to the contaminated soil in the device, and fully mix them after stirring by engineering machinery, so that the reagents and harmful components in the contaminated soil have physical and chemical effects, the harmful components are decomposed or sealed in dense low-permeability solidified body to change the form of harmful components and reduce their migration in the environment to achieve soil remediation. However, in Guangxi region of China, karst landform is the main one, and there are many stones in the excavated soil. The existing equipment cannot screen the stones, and the stones entering the soil remediation device can easily damage the equipment. In addition, in many regions of China, high clay soil is the main one. For high clay contaminated soil, due to its high soil viscosity, the existing equipment is difficult to fully mix the reagents and soil, resulting in poor remediation effect. SUMMARY

[0003] An object of the present application is to solve at least the above problems and to provide at least the advantages described later.

[0004] Another object of the present application is to provide a soil remediation device that can separate stones while dispersing soil, so that the remediation reagents can be effectively used in the soil.

[0005] In order to achieve these objects and other advantages according to the present application, a soil remediation device is provided, comprising:

[0006] A cabinet, a vertical partition plate is arranged in the middle of the inside of the cabinet along the length direction, the lower end of the partition plate is at half the height of the cabinet, and the partition plate separates the upper space in the cabinet into a front cavity and a rear cavity;

[0007] A conveying belt is arranged horizontally in the front cavity along the length direction of the cabinet, the starting end of the conveying belt is close to an end wall of the cabinet, a feeding port is arranged on the top of the cabinet opposite to the position of the starting end of the conveying belt, and a supporting plate is arranged below the upper layer of the conveying belt;

[0008] The separating roller comprises a steel cylinder and an elastic rubber layer sleeved outside the circumference of the steel cylinder, a plurality of first through holes are formed in the steel cylinder and the elastic rubber layer, the separating roller is horizontally arranged above the conveying belt, the gap between the separating roller and the conveying belt is a preset threshold, the end of the separating roller close to the side wall of the cabinet is closed, and the end close to the partition plate is open, a first motor is arranged on the outer wall of the cabinet, the output shaft of the first motor is coaxially connected with the closed end of the separating roller through the side wall of the cabinet to drive the separating roller to rotate, and the linear velocity direction of the lowermost end of the separating roller is the same as the advancing direction of the conveying belt, so that the soil blocks on the conveying belt and / or the stone blocks with soil are extruded, the soil blocks are dispersed, and / or the soil on the surface of the stone blocks is extruded into the steel cylinder.

[0009] A scraper is arranged on the partition plate and extends into the open end of the separating roller, so that the soil in the steel cylinder is scraped.

[0010] The open end of the separating roller extends to the outside of the side edge of the conveying belt, a stirring cylinder is arranged in the cabinet and below the open end of the separating roller, the stirring cylinder is used for receiving the scraped soil in the steel cylinder, a medicament spraying assembly is arranged above the stirring cylinder and used for spraying medicament into the stirring cylinder, a stirring assembly is arranged in the stirring cylinder and used for uniformly stirring the medicament and the soil, and a soil discharge port is arranged at the bottom of the stirring cylinder.

[0011] Preferably, a centrifugal separation mechanism is arranged below the terminal end of the conveying belt, and the centrifugal separation mechanism comprises:

[0012] A fixed cylinder is arranged in the cabinet and is communicated with the stirring cylinder through a soil conveying pipe which is inclined downward;

[0013] A rotating cylinder is coaxially arranged in the fixed cylinder, a plurality of second through holes are arranged in the cylinder wall of the rotating cylinder, a stone block discharge port is arranged at the lower end of the rotating cylinder, and a stone block conveying pipe is coaxially and rotatably connected to the lower end of the stone block discharge port and extends out of the bottom of the fixed cylinder.

[0014] A stone block storage box is arranged in the cabinet and below the fixed cylinder, and the stone block conveying pipe is communicated with the stone block storage box.

[0015] The upper end of the rotating cylinder is higher than the fixed cylinder, a gear ring is coaxially arranged on the outer wall of the rotating cylinder which is higher than the fixed cylinder, a second motor is arranged on the top of the cabinet, the output shaft of the second motor extends into the cabinet through the top of the cabinet and is connected with a gear, and the gear is engaged with the gear ring, so that the second motor drives the rotating cylinder to rotate.

[0016] Preferably, an inclined bottom plate is arranged in the stirring cylinder, and the soil discharge port is arranged at the lowest position of the bottom plate.

[0017] The stirring assembly comprises:

[0018] A third motor is arranged on the lower surface of the bottom plate, an output shaft of the third motor extends into the stirring cylinder through the bottom plate, and the part of the output shaft of the third motor in the stirring cylinder is provided with stirring blades.

[0019] Preferably, the pesticide spraying assembly comprises:

[0020] A pesticide cylinder is arranged in the machine box, a cover plate is arranged on the top of the pesticide cylinder, a liquid adding pipe is arranged in communication on the cover plate, and the liquid adding pipe extends out of the top of the machine box upwardly;

[0021] A liquid pumping pump is arranged on the upper surface of the cover plate, a suction inlet of the liquid pumping pump is connected to a first pipeline which extends into the interior of the pesticide cylinder through the cover plate, a pump outlet of the liquid pumping pump is connected to a second pipeline, and the second pipeline extends above the stirring cylinder;

[0022] A liquid spraying nozzle is connected in communication to the end section of the second pipeline and faces the interior of the pesticide cylinder.

[0023] Preferably, a cleaning scraper is arranged behind the separating roller in the advancing direction of the conveying belt, the upper end of the cleaning scraper is connected to the top of the machine box, and the lower end of the cleaning scraper abuts against the surface of the separating roller.

[0024] Preferably, the separating roller, the scraper cooperating with the separating roller, and the first motor are arranged in two groups, the gap between the separating roller close to the starting end of the conveying belt and the conveying belt is greater than the gap between the separating roller close to the terminal end of the conveying belt and the conveying belt.

[0025] Preferably, the stone storage box uses the side wall of the machine box to form its own side wall, and a stone discharge port is arranged on the side wall of the stone storage box.

[0026] Preferably, a fixed leg or a roller leg is arranged at each of the four corners of the outer surface of the bottom of the machine box.

[0027] This invention offers at least the following beneficial effects: the roller-pressed separating drum disperses soil clods on the conveyor belt and compresses soil from the surface of stones into the separating drum, promoting soil-stone separation. A scraper further loosens the soil within the separating drum, discharging it through the drum's opening into the mixing tank. Simultaneously, a centrifugal separation mechanism further separates the loosened soil from the stones on the conveyor belt. Since the weight of the stones is greater than the weight of the loose soil, the soil can be discharged from the second through-hole of the rotating cylinder to the fixed cylinder, and then from the fixed cylinder into the mixing tank via a soil conveying pipe. The stones remain in the rotating cylinder and are discharged into a stone storage box through a stone conveying pipe below the rotating cylinder. Through these two separation processes, as much soil as possible is discharged into the mixing tank. Finally, a chemical spraying component sprays a remediation agent to repair the soil. This process organically combines soil dispersion and stone separation, achieving two goals at once and ensuring the effective utilization of the remediation agent in the soil.

[0028] Other advantages, objectives and features of the present invention will become apparent in part from the following description, and in part from those skilled in the art through study and practice of the invention. Attached Figure Description

[0029] Figure 1 This is a side view of the soil remediation device according to an embodiment of the present invention;

[0030] Figure 2 This is a top view of the soil remediation device described in an embodiment of the present invention. Detailed Implementation

[0031] The present invention will now be described in further detail with reference to the accompanying drawings, so that those skilled in the art can implement it based on the description.

[0032] It should be noted that, unless otherwise specified, the experimental methods described in the following embodiments are all conventional methods, and the reagents and materials described are all commercially available unless otherwise specified. In the description of this invention, the terms "lateral", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0033] like Figures 1-2 As shown, the present invention provides a soil remediation device, comprising:

[0034] A cabinet 1, which is internally provided with a vertical partition plate 2 along the length direction, the lower end of the partition plate 2 is at half height in the cabinet 1, and the partition plate 2 divides the upper space in the cabinet 1 into a front cavity and a rear cavity;

[0035] Specifically, the upper end of the partition plate 2 is connected with the top of the cabinet 1, and the left and right ends are respectively connected with the opposite end walls of the cabinet 1. The length direction inner wall in the cabinet 1 is referred to as the side wall in the application, and the width direction inner wall is referred to as the end wall.

[0036] A conveying belt 3 is horizontally arranged in the front cavity along the length direction of the cabinet 1. The starting end of the conveying belt 3 is close to an end wall of the cabinet 1. A feeding port 4 is arranged on the top of the cabinet 1 and is opposite to the starting end position of the conveying belt 3. A supporting plate 5 is arranged below the upper belt of the conveying belt 3.

[0037] Specifically, the driving motor of the conveying belt 3 can be arranged on the outer surface of the side wall of the front cavity. The output shaft of the driving motor is connected with the rotating shaft of the drum of the conveying belt 3 by penetrating the side wall of the cabinet 1. The other end of the rotating shaft of the drum of the conveying belt 3 is rotatably connected with the partition plate 2. The upper surface of the supporting plate 5 abuts against the lower surface of the upper belt of the conveying belt 3, thereby supporting the upper belt of the conveying belt 3. One side end of the supporting plate 5 can be connected with the side wall of the cabinet 1, and the other side end can be connected with the partition plate 2 through a connecting rod.

[0038] A separating drum includes a steel cylinder 6 and an elastic rubber layer 7 sleeved on the circumference of the steel cylinder 6. A plurality of first through holes 8 are arranged on the steel cylinder 6 and the elastic rubber layer 7. The separating drum is horizontally arranged above the conveying belt 3. The gap between the separating drum and the conveying belt 3 is a preset threshold value. The end of the separating drum close to the side wall of the cabinet 1 is closed, and the end close to the partition plate 2 is open. A first motor 9 is arranged on the outer wall of the cabinet 1. The output shaft of the first motor 9 is coaxially connected with the closed end of the separating drum through the side wall of the cabinet 1 to drive the separating drum to rotate. The direction of the linear velocity of the lowermost end of the separating drum is the same as the advancing direction of the conveying belt 3, so as to extrude the soil blocks on the conveying belt 3 and / or the stone blocks with soil, thereby dispersing the soil blocks and / or extruding the soil on the surface of the stone blocks into the steel cylinder 6.

[0039] Specifically, a ring sleeve can be arranged on the open end of the separating drum. The top of the ring sleeve can be connected with the top of the cabinet 1 through a connecting rod, so that the ring sleeve can lift the open end of the separating drum. A bearing can be arranged in the ring sleeve, so that the outer circumference of the separating drum is connected in the inner hole of the bearing, thereby realizing the rotary connection between the separating drum and the ring sleeve. In addition, the length range of the supporting plate 5 can be the length range of the projection of the separating drum on the upper surface of the conveying belt 3, so as to better cooperate with the work of the separating drum.

[0040] A scraper 10 is arranged on the partition plate 2 and extends into the open end of the separating drum, so as to scrape the soil in the steel cylinder 6;

[0041] Specifically, the scraper 10 can be provided with triangular reinforcing ribs on the left and right sides, one side of which is connected to the partition plate 2 and the other side is connected to the side of the scraper 10, so as to prevent the scraper 10 from bending under the influence of the rotating separating drum after long-term use.

[0042] The open end of the separating drum extends to the side of the conveying belt 3, and a stirring cylinder 11 is arranged below the open end of the separating drum in the cabinet 1 to receive the scraped soil from the steel cylinder 6. An agent spraying assembly is arranged above the stirring cylinder 11 to spray the agent into the stirring cylinder 11. A stirring assembly is arranged in the stirring cylinder 11 to uniformly stir the agent and the soil. The stirring cylinder 11 is provided with a soil discharge port 12 at the bottom.

[0043] The working process of the above embodiment is as follows: the soil to be repaired is poured into the cabinet 1 from the feed inlet 4, and the conveying belt 3 transports the soil to be repaired from the starting end to the terminal end. In the transportation process, the first motor 9 drives the separating drum to rotate. When the soil to be repaired passes below the separating drum, the soil is extruded and dispersed by the separating drum, and part of the soil enters the separating drum from the first through hole 8 when the conveying belt 3 supported by the supporting plate 5 and the elastic rubber layer 7 extrude each other. At the same time, due to the elastic rubber layer 7 on the outer layer of the separating drum, which can deform to adapt to different shapes and heights of the stone, the adhesive soil on the surface of the stone also enters the separating drum from the first through hole 8 when the elastic rubber layer 7 and the stone extrude each other. The scraper 10 arranged in the separating drum can scrape and loosen the soil in the separating drum, which is discharged from the open end of the separating drum to the stirring cylinder 11, and the stone is discharged from the terminal end of the conveying belt 3. The agent spraying assembly above the stirring cylinder 11 sprays the repair agent to repair the soil. The above process combines soil dispersion and stone separation organically, which achieves two goals at once, so that the repair agent is effectively used in the soil.

[0044] In another embodiment, a centrifugal separation mechanism is arranged below the terminal end of the conveying belt 3, which includes:

[0045] A fixed cylinder 13 is provided with a soil conveying pipe 14 at the lower end, which is communicated with the stirring cylinder 11 obliquely downward;

[0046] Specifically, the structure of the fixed cylinder 13 can adopt the structure as shown in Figure 1 The fixed cylinder 13 includes a funnel-shaped lower part of the cylinder body and a cylindrical upper part of the cylinder body, so that the materials in the fixed cylinder 13 can gradually collect from top to bottom.

[0047] A rotating cylinder 15 is coaxially arranged inside the fixed cylinder 13, the cylinder wall of the rotating cylinder 15 is provided with a plurality of second through holes 16, the lower end of the rotating cylinder 15 is provided with a stone discharging port, the lower end of the stone discharging port is coaxially connected with a stone conveying pipe 17 which penetrates through the bottom of the fixed cylinder 13;

[0048] Specifically, the structure of the rotating cylinder 15 can be similar to that of the fixed cylinder 13, except that the outer diameter of the rotating cylinder 15 must be smaller than the inner diameter of the fixed cylinder 13, so as to leave a gap between the two, and a bearing can be arranged between the rotating cylinder 15 and the fixed cylinder 13, so as to prevent the rotating cylinder 15 from being eccentric when rotating.

[0049] A stone storage box 18 is arranged in the machine box 1 below the fixed cylinder 13, and the stone conveying pipe 17 is in communication with the stone storage box 18;

[0050] Specifically, since the fixed cylinder 13 is arranged on the stone storage box 18, the feet of the fixed cylinder 13 can be arranged on the top of the stone storage box 18 to support the fixed cylinder 13.

[0051] The upper end of the rotating cylinder 15 is higher than the fixed cylinder 13, a gear ring 19 is coaxially arranged on the outer wall of the rotating cylinder 15 which is higher than the fixed cylinder 13, a second motor 20 is arranged on the top of the machine box 1, the output shaft of the second motor 20 penetrates through the top of the machine box 1 and extends into the machine box 1 and is connected with a gear wheel 21, the gear wheel 21 is engaged with the gear ring 19, so that the second motor 20 drives the rotating cylinder 15 to rotate.

[0052] The working process of the above embodiment is as follows: when the stone and part of the dispersed soil remaining on the conveying belt 3 after being treated by the separating roller fall into the rotating cylinder 15 from the terminal end, the second motor 20 drives the rotating cylinder 15 to rotate, and the dispersed soil with small mass and small particles is centrifuged and moves in when passing through the second through hole 16, and then penetrates into the fixed cylinder 13 from the second through hole 16, the soil in the fixed cylinder 13 is then discharged into the stirring cylinder 11 through the inclined soil conveying pipe 14, and the stone with large mass in the rotating cylinder 15 gradually collects at the bottom of the rotating cylinder 15, and then enters the stone storage box 18 through the stone discharging port, the stone conveying pipe 17. The above process further separates the soil and the stone, and improves the separation effect of the soil and the stone.

[0053] In another embodiment, an inclined bottom plate 22 is arranged in the stirring cylinder 11, and the soil discharge port 12 is arranged at the lowest position of the bottom plate 22;

[0054] The stirring assembly comprises:

[0055] A third motor 23 is arranged on the lower surface of the bottom plate 22, the output shaft of the third motor 23 extends through the bottom plate 22 into the stirring cylinder 11, and the part of the output shaft of the third motor 23 in the stirring cylinder 11 is provided with stirring blades 24.

[0056] The working process of the above embodiment is as follows: after the soil in the separating drum and the centrifugal separation mechanism enters the stirring cylinder 11, the third motor 23 drives the stirring blades 24 to rotate, so that the repair agent sprayed by the agent spraying assembly is uniformly stirred with the soil, and the soil slides down along the bottom plate 22 during stirring and is discharged out of the cabinet 1.

[0057] In another embodiment, the agent spraying assembly comprises:

[0058] An agent cylinder 25 is arranged in the cabinet 1, a cover plate is arranged on the top of the agent cylinder 25, a liquid adding pipe 26 is arranged in communication on the cover plate, and the liquid adding pipe 26 extends out of the top of the cabinet 1 upwardly;

[0059] A liquid pumping pump 27 is arranged on the upper surface of the cover plate, the suction inlet of the liquid pumping pump 27 is connected to a first pipe 28 extending into the interior of the agent cylinder 25 through the cover plate, the pump outlet of the liquid pumping pump 27 is connected to a second pipe 29, and the second pipe 29 extends above the stirring cylinder 11;

[0060] A liquid spraying nozzle 30 is connected in communication to the end section of the second pipe 29 and faces the interior of the agent cylinder 25.

[0061] The working process of the above embodiment is as follows: before the soil repair device is used, the corresponding repair agent is configured according to the properties of the soil to be repaired, and is added into the agent cylinder 25 through the liquid adding pipe 26, after the soil in the separating drum and the centrifugal separation mechanism enters the stirring cylinder 11, the liquid pumping pump 27 pumps the repair agent in the agent cylinder 25 and sprays it into the stirring cylinder 11 through the second pipe 29 and the liquid spraying nozzle 30, so that the repair agent contacts the soil to be repaired in the stirring cylinder 11.

[0062] In another embodiment, a cleaning scraper 31 is arranged behind the separating drum in the advancing direction of the conveying belt 3, the upper end of the cleaning scraper 31 is connected to the top of the cabinet 1, and the lower end abuts against the surface of the separating drum.

[0063] In the above embodiment, the soil adhered to the outer surface of the elastic rubber layer 7 can be cleaned by arranging the cleaning scraper 31, so that the soil is prevented from remaining on the separating drum.

[0064] In another embodiment, the separating roller and the cooperating scraper 10, the first motor 9 are provided with two groups, the gap between the separating roller near the starting end of the conveying belt 3 and the conveying belt 3 is larger than the gap between the separating roller near the ending end of the conveying belt 3 and the conveying belt 3.

[0065] In the above embodiment, by providing two groups of separating rollers, scrapers 10 and first motors 9, the dispersion effect on the soil clumps can be gradually enhanced, the separation effect on the soil on the surface of the stone clumps can be enhanced, and the case of poor dispersion and separation effect at one time can be avoided.

[0066] In another embodiment, the stone storage box 18 utilizes the side wall of the machine box 1 to form its own side wall, and a stone discharge port is arranged on the side wall of the stone storage box 18.

[0067] In the above embodiment, by providing the stone storage box 18, the accumulated stone clumps can be taken out and transported at one time after the device is operated for a period of time, and the time for multiple transportation is saved.

[0068] In another embodiment, the bottom outer surface of the machine box 1 is provided with a fixed leg 32 or a roller leg at each corner.

[0069] In the above embodiment, when the legs are arranged at the bottom of the machine box 1, the soil remediation device can work in a fixed factory area, and when the roller legs are arranged at the top of the machine box 1, the soil remediation device can work together with soil plowing, earthmoving and other devices in the field. In addition, when the soil remediation device works in the field, the stone storage box 18 can temporarily store the separated stone clumps, and then take them out and transport them to a fixed discharge point, so as to avoid the separated stone clumps from being discharged into the soil again.

[0070] Although the embodiments of the present application have been disclosed as above, they are not limited to the application and implementation listed in the specification and the embodiments, and can be fully applied to various fields suitable for the present application, and additional modifications can be easily realized by those skilled in the art, and therefore the present application is not limited to specific details and the figures shown and described herein, without departing from the general concept defined by the claims and the equivalent scope.

Claims

1. A soil remediation device, characterized in that, include: The chassis has a vertical partition along its length in the middle of its interior. The lower end of the partition is located at half the height of the chassis. The partition divides the upper space inside the chassis into a front cavity and a rear cavity. A conveyor belt is horizontally arranged in the front cavity along the length of the machine housing. The starting end of the conveyor belt is close to one end wall of the machine housing. A feed inlet is provided on the top of the machine housing directly opposite the starting end of the conveyor belt. A support plate is provided below the upper belt of the conveyor belt. A separating roller includes a steel cylinder and an elastic rubber layer sleeved around the circumference of the steel cylinder. Several through holes are formed in the steel cylinder and the elastic rubber layer. The separating roller is horizontally positioned above the conveyor belt. The gap between the separating roller and the conveyor belt is a preset threshold value. The end of the separating roller near the side wall of the housing is closed, while the end near the partition is open. A first motor is provided on the outer wall of the housing. The output shaft of the first motor passes through the side wall of the housing and is coaxially connected to the closed end of the separating roller to drive its rotation. The linear velocity direction of the lowest end of the separating roller is the same as the forward direction of the conveyor belt, thereby squeezing soil clods and / or stones with soil adhering to them onto the conveyor belt, thus dispersing the soil clods and / or squeezing the soil on the surface of the stones into the steel cylinder. A scraper, with one end set on the partition plate and the other end extending into the open end of the separating drum, scrapes the soil inside the steel cylinder. The open end of the separating drum extends to the side of the conveyor belt. A mixing cylinder is provided inside the machine housing below the open end of the separating drum to receive soil scraped from the steel cylinder. A chemical spraying assembly is provided above the mixing cylinder to spray chemicals into the mixing cylinder. A mixing assembly is provided inside the mixing cylinder to mix the chemicals and soil evenly. A soil discharge port is provided at the bottom of the mixing cylinder. A centrifugal separation mechanism is provided below the end point of the conveyor belt, and the centrifugal separation mechanism includes: A fixed cylinder is connected to a soil conveying pipe at its lower end, and the soil conveying pipe is connected to the mixing cylinder at an angle downward. A rotating cylinder is coaxially rotatably disposed inside the fixed cylinder. The cylinder wall of the rotating cylinder is provided with several second through holes. A stone discharge port is provided at the lower end of the rotating cylinder. A stone conveying pipe is coaxially rotatably connected to the lower end of the stone discharge port. The stone conveying pipe passes through the bottom of the fixed cylinder. A stone storage box is installed inside the machine housing and located below the fixed cylinder; the stone conveying pipe is connected to the stone storage box. The upper end of the rotating cylinder is higher than the fixed cylinder. A gear ring is coaxially arranged on the outer wall of the rotating cylinder, which is higher than the fixed cylinder. A second motor is arranged on the top of the housing. The output shaft of the second motor passes through the top of the housing, extends into the housing, and is connected to a gear. The gear meshes with the gear ring so that the second motor drives the rotating cylinder to rotate. The separating roller and the cooperating scraper and the first motor are arranged in two sets. The gap between the separating roller near the starting end of the conveyor belt and the conveyor belt is greater than the gap between the separating roller near the ending end of the conveyor belt and the conveyor belt. The stone storage box utilizes the side wall of the chassis to form one side wall of itself, and a stone discharge port is provided on this side wall of the stone storage box.

2. The soil remediation device as described in claim 1, characterized in that, The mixing tank is equipped with an inclined bottom plate, and the soil discharge port is located at the lowest point of the bottom plate. The stirring assembly includes: A third motor is disposed on the lower surface of the base plate. The output shaft of the third motor extends through the base plate into the mixing tank, and the portion of the output shaft of the third motor inside the mixing tank is provided with mixing blades.

3. The soil remediation device as described in claim 1, characterized in that, The agent spraying assembly includes: A reagent cylinder is installed inside the machine housing. A cover plate is installed on the top of the reagent cylinder, and a liquid addition pipe is connected to the cover plate. The liquid addition pipe extends upward out of the top of the machine housing. A liquid pump is disposed on the upper surface of the cover plate. The suction port of the liquid pump is connected to a first pipe that extends through the cover plate into the interior of the medicine cylinder. The pump outlet of the liquid pump is connected to a second pipe that extends to the top of the stirring cylinder. A spray nozzle is connected to the end of the second pipe and faces into the medicine cylinder.

4. The soil remediation device as described in claim 1, characterized in that, In the forward direction of the conveyor belt, a cleaning scraper is provided behind the separating roller. The upper end of the cleaning scraper is connected to the top of the machine box, and the lower end abuts against the surface of the separating roller.

5. The soil remediation device as described in claim 1, characterized in that, The chassis has a fixed support or a roller support at each of the four corners of its bottom outer surface.

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