Contaminated soil treatment equipment

Abstract

The invention relates to contaminated soil treatment equipment. Comprising a crushing device, a rotary spraying dosing device, a stirring device and a liquid medicine supply device, the turning and stirring device comprises a turning and stirring box, the top of the turning and stirring box is provided with a feeding window, the bottom of the turning and stirring box is provided with a discharging pipeline, and a turning and stirring impeller driven by a turning and stirring motor is installed in the turning and stirring box; a feeding window is arranged on the base, a chemical adding box is arranged on the feeding window, a rotary spraying chemical adding device is arranged on the chemical adding box, the rotary spraying chemical adding device comprises a shaft seat arranged on the box wall of the chemical adding box, a chemical adding pipe is arranged in the shaft seat, a multi-support-arm rotating plate is arranged at the inner end of the chemical adding pipe, each support arm is provided with an atomizing nozzle and a disturbance rod, the atomizing nozzle is connected with the chemical adding pipe, and the disturbance rod is connected with the rotary plate. The rotary spraying driving assembly is used for driving the chemical adding pipe to rotate; the crushing device comprises a box body with openings in the top and the bottom, a bottom frame is mounted in the box body, an arc-shaped filter screen is arranged above the bottom frame, a crushing rotor with a plurality of crushing hammers is further mounted in the box body, and a crushing driving assembly for driving the crushing rotor to rotate is mounted outside the box body; a discharging hopper is installed at the bottom of the box body, and a lower port of the discharging hopper is located above an upper port of the dosing box. According to the invention, the polluted soil is uniformly and fully added with chemicals in the flowing process, so that the soil remediation / treatment effect is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of soil treatment equipment, and in particular relates to contaminated soil treatment equipment. Background Art

[0002] Ex situ remediation / treatment is one of the important methods of soil remediation. It refers to the technology of excavating the contaminated soil from the location where the contamination occurred and treating it within the original site or after transportation. Ex situ soil remediation is suitable for treating sites with high pollution concentration, high risk and not large amount of contaminated soil. Direct and effective technical methods can be selected to centrally treat contaminated soil. The treatment is efficient and thorough, and it is easier to control in terms of monitoring, which can reduce monitoring costs.

[0003] The key point of ex situ soil remediation / treatment is to evenly add chemicals to the soil. By fully mixing the remediation solution with the soil, the treatment effect on pollutants can be improved, and the effect of soil remediation / treatment can be improved. Generally speaking, according to the process of soil remediation / treatment, the excavated contaminated soil should be piled in the yard to reduce the moisture content, and then enter the dosing step for drug treatment. It can be said that the quality of the dosing effect directly determines the quality of the soil remediation / treatment effect. The existing method of adding chemicals to contaminated soil is usually based on spraying the soil pile, and after adding the chemicals, it is mixed on site by machinery. This treatment measure is difficult to ensure uniform application of chemicals and the effect of soil remediation / treatment. Summary of the invention

[0004] The purpose of the present invention is to provide a contaminated soil treatment device, which can complete uniform and sufficient dosing treatment of the contaminated soil during flow, thereby improving the effect of soil remediation / treatment.

[0005] The technical solution adopted by the present invention is: a contaminated soil treatment equipment, including a crushing device, a rotary spraying dosing device, a stirring device and a liquid medicine supply device; the stirring device includes a stirring box with a feeding window on the top and a discharging pipe on the bottom, and a stirring impeller driven by a stirring motor is installed in the stirring box; a dosing box is installed on the feeding window, and the rotary spraying dosing device is installed on the dosing box. The rotary spraying dosing device includes a shaft seat installed on the box wall of the dosing box, a dosing pipe is installed in the shaft seat, and a multi-arm rotating plate is installed at the inner end of the dosing pipe. , an atomizing nozzle and a disturbance rod are installed on each support arm, the atomizing nozzle is connected to the dosing pipe, and also includes a rotary spray driving component for driving the dosing pipe to rotate; the crushing device includes a box body with open top and bottom, a base frame is installed inside the box body, an arc-shaped filter screen is provided above the base frame, a crushing rotor with multiple crushing hammers is also installed inside the box body, and a crushing driving component for driving the crushing rotor to rotate is installed outside the box body; a feeding funnel is installed at the bottom of the box body, and the lower port of the feeding funnel is located above the upper port of the dosing box.

[0006] Preferably, the dosing box, the rotary spray dosing device, the crushing device and the discharge funnel are provided in two groups on the left and right, and are arranged in a mirror-symmetrical manner.

[0007] Preferably, a box cover is provided on the top of the mixing box and a feed window is arranged on the box cover, and hinges and locks are provided between the box cover and the mixing box; flanges are provided at the upper end of the feed window and the lower end of the dosing box and are fixedly connected by bolts.

[0008] Preferably, the stirring impeller comprises a wheel shaft, a positive spiral impeller is installed on the left part of the wheel shaft, and a reverse spiral impeller is installed on the right part. When the stirring impeller rotates, the soil at both ends of the stirring box is pushed toward the middle for stirring.

[0009] Preferably, a radially extending support beam is installed on each arm of the multi-arm rotating plate, and a plurality of threaded mounting holes are provided on each support beam along the length direction. Atomizing nozzles and disturbance rods are installed in the threaded mounting holes, and the distance between each atomizing nozzle and the center line is the same or different, and the distance between each disturbance rod and the center line is the same or different.

[0010] Preferably, the rotary spray driving assembly of the rotary spray dosing device includes a rotary spray motor installed on the wall of the dosing box, and a worm gear mechanism is installed between the output shaft of the rotary spray motor and the dosing pipe.

[0011] Preferably, the crushing rotor of the crushing device includes a driving shaft, on which a plurality of supporting discs are installed in the axial direction, the crushing hammer includes a hammer rod with a sleeve at the root and a hammer head installed at the outer end of the hammer rod, a pin is installed between adjacent supporting discs and the sleeve of the hammer rod is sleeved on the pin.

[0012] Preferably, it also includes a high-position bracket with rail wheels at the bottom, the crushing device and the discharge hopper are installed and fixed on the top of the high-position bracket, and a ground rail is installed on the ground and the rail wheels move along the ground rail.

[0013] Preferably, the liquid medicine supply device comprises a towable chassis with wheels, on which a liquid medicine tank, a filter box and a dosing pump are mounted, the outlet of the liquid medicine tank is connected to the inlet of the filter box, and the outlet of the filter box is connected to the inlet of the dosing pump.

[0014] Preferably, it also includes a high-level conveyor and a low-level conveyor, the end of the high-level conveyor is located above the inlet of the crushing device, and the head end of the low-level conveyor is located below the discharge pipe, and an electric gate valve is installed on the discharge pipe.

[0015] The advantages and positive effects of the present invention are:

[0016] The present invention provides a contaminated soil treatment device. Compared with the existing stacking type spraying and mechanical stirring repair / treatment methods, the present invention uses a crushing device to crush the contaminated soil, uses a feeding funnel to introduce the crushed contaminated soil into a dosing box, and the contaminated soil after atomized spraying and dosing falls into the stirring box and is stirred by a stirring impeller. Therefore, the present invention allows the contaminated soil to complete uniform and sufficient dosing treatment during flow, thereby improving the effect of soil repair / treatment. When the rotary spray dosing device used in the present invention is in operation, its disturbance rod will disturb the contaminated soil passing longitudinally through the dosing box, and at the same time, the rotating multiple atomizing nozzles will dosing to the contaminated soil flow in the longitudinal passage and disturbance, thereby achieving a more uniform mixing effect between the contaminated soil and the repair / treatment liquid, achieving more uniform and sufficient dosing, and improving the effect of soil repair / treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0018] Figure 2 yes Figure 1 Schematic diagram of the three-dimensional structure of the central mixing device;

[0019] Figure 3 yes Figure 2 Schematic diagram of the three-dimensional structure of the mid-rotation spray dosing device;

[0020] Figure 4 yes Figure 1 Schematic diagram of the external structure of the medium crushing device;

[0021] Figure 5 yes Figure 4 Schematic diagram of the internal structure of the medium crushing device.

[0022] In the figure:

[0023] 1. Towable chassis; 2. Liquid tank; 3. Filter box; 4. Dosing pump; 5. Stirring motor; 6. Track wheel; 7. Ground rail; 8. Low-level conveyor; 9. Rotary spray dosing device; 9-1. Rotary sealing joint; 9-2. Shaft seat; 9-3. Worm gear mechanism; 9-4. Rotary spray motor; 9-5. Multi-arm rotating plate; 9-6. Support beam; 9-7. Atomizing nozzle; 9-8. Disturbance rod; 9-9. Dosing pipe; 10. Dosing box; 11. Feeding hopper; 12. Stirring impeller; 13. Stirring box; 14. Electric gate valve ;15. High-position bracket;16. Crushing device;16-1. Upper box body;16-2. Lower box body;16-3. Side box plate;16-4. Wear-resistant lining plate;16-5. Driven pulley;16-6. Limit wedge block;16-7. Base frame;16-8. Filter screen;16-9. Drive shaft;16-10. Support disc;16-11. Hammer rod;16-12. Hammer head;17. Crushing motor;18. High-position conveyor;19. Discharge pipe;20. Support;21. Box cover plate;22. Feed window;23. Hinge. DETAILED DESCRIPTION

[0024] In order to further understand the content, features and effects of the present invention, the following embodiments are given to explain in detail.

[0025] See also Figure 1 The contaminated soil treatment equipment of the present invention includes a crushing device 16, a rotary spraying dosing device 9, a mixing device, and a liquid supply device for supplying a repair / treatment liquid to the rotary spraying dosing device 9. Among them, the crushing device 16 and the rotary spraying dosing device 9 are located above the mixing device. The crushing device 16 crushes the contaminated soil that has been pre-dried and has had stones removed, and crushes the agglomerated soil into small soil particles, thereby improving the fluidity of the soil and the mixing effect of subsequent rotary spraying dosing. The rotary spraying dosing device 9 performs rotary spraying dosing on the flowing soil. The soil after dosing falls into the mixing device, and is mixed for a certain period of time to further improve the mixing uniformity with the repair / treatment liquid. Finally, the contaminated soil is discharged from the mixing device and transferred to the yard for stacking for a certain process time, thereby completing the soil repair / treatment process.

[0026] See also Figure 2 , we can see that:

[0027] The stirring device includes a stirring box 13 with a feeding window 22 at the top and a discharge pipe 19 at the bottom. A stirring impeller 12 driven by a stirring motor 5 is installed in the stirring box 13, wherein the stirring box 13 and the stirring motor 5 are stably supported by a support 20. The contaminated soil after the rotary spraying and dosing flows through the feeding window 22 and falls into the stirring box 13. The stirring motor 5 drives the stirring impeller 12 to rotate, stirring the contaminated soil in the box, and finally the contaminated soil after dosing and dosing is discharged from the discharge pipe 19 at the bottom. In this embodiment, an electric gate valve 14 is installed on the discharge pipe 19, and the opening and closing of the electric gate valve 14 are controlled by a controller.

[0028] In this embodiment, the stirring impeller 12 includes a wheel shaft driven by a stirring motor 5, a positive spiral impeller is installed on the left part of the wheel shaft, and a reverse spiral impeller is installed on the right part. When the stirring impeller 12 rotates, the soil at both ends of the stirring box 13 is pushed toward the middle for stirring. When the electric gate valve 14 on the discharge pipe 19 at the bottom is opened, under the continuous action of the stirring impeller 12, the contaminated soil is transferred to the middle and the contaminated soil is gradually discharged.

[0029] A dosing box 10 is installed on the feed window 22, and a rotary spray dosing device 9 is installed on the dosing box 10. The dosing box 10 provides a longitudinal passage for the crushed contaminated soil flow to be transferred downward to the mixing box 13, and the rotary spray dosing device 9 performs rotary spray dosing on the contaminated soil passing longitudinally in the dosing box 10.

[0030] In this embodiment, a box cover 21 is provided on the top of the mixing box 13 and a feed window 22 is provided on the box cover 21. A hinge 23 and a lock are provided between the box cover 21 and the mixing box 13. Therefore, when the locking function of the lock is contacted, the box cover 21 can be flipped open with the hinge 23 as the center, which is convenient for cleaning the interior and troubleshooting. The box cover 21 closes the top opening of the mixing box 13, and a feed window 22 is provided for receiving contaminated soil. Therefore, during the mixing process, no dust and volatile substances of the repair / treatment liquid will evaporate into the surrounding environment.

[0031] Further, flanges are provided at the upper end of the feed window 22 and the lower end of the dosing box 10 and are fixedly connected by bolts. In this way, when necessary, the dosing box 10 can be disassembled as a whole from the feed window 22 where it is located, and the interior can be cleaned and troubleshooted.

[0032] See also Figure 3 , we can see that:

[0033] The rotary spray dosing device 9 includes an axle seat 9-2 installed on the box wall of the dosing box 10, a dosing tube 9-9 is installed in the axle seat 9-2, and a bearing is installed between the dosing tube 9-9 and the axle seat 9-2, so that the dosing tube 9-9 can rotate flexibly. A multi-arm rotating plate 9-5 is installed at the inner end of the dosing tube 9-9, and an atomizing nozzle 9-7 and a disturbance rod 9-8 are installed on each of its arms, and the atomizing nozzle 9-7 is connected to the dosing tube 9-9. Among them, the atomizing nozzle 9-7 is used to spray the repair / treatment liquid in an atomized manner, and the disturbance rod 9-8 disturbs the contaminated soil flow passing through the dosing box 10 longitudinally when rotating, thereby improving the rotary spraying effect of the liquid to the soil.

[0034] The rotary spray driving assembly for driving the dosing tube 9-9 to rotate is also included. In this embodiment, the rotary spray driving assembly of the rotary spray dosing device 9 includes a rotary spray motor 9-4 installed on the wall of the dosing box 10, a worm gear mechanism 9-3 is installed between the output shaft of the rotary spray motor 9-4 and the dosing tube 9-9, the worm gear mechanism 9-3 includes a worm gear installed on the dosing tube 9-9 and a worm installed on the output shaft of the rotary spray motor 9-4, and the rotary spray motor 9-4 drives the dosing tube 9-9 and its accessories to rotate slowly and at a uniform speed.

[0035] In this embodiment, a radially extending support beam 9-6 is installed on each arm of the multi-arm rotating plate 9-5, and a plurality of threaded mounting holes are provided on each support beam 9-6 along the length direction, and the atomizing nozzle 9-7 and the disturbance rod 9-8 are installed in the threaded mounting holes. The plurality of threaded mounting holes on each support beam 9-6 provide a plurality of mounting positions for the atomizing nozzle 9-7 and the disturbance rod 9-8, and threaded rods are provided at the roots of the atomizing nozzle 9-7 and the disturbance rod 9-8, and the installation is achieved by screwing the threaded rods into the threaded mounting holes. A joint that passes through the dosing pipe 9-9 can be provided at the center of the multi-arm rotating plate 9-5, and a joint can be provided on the side of each atomizing nozzle 9-7, and the aforementioned joint is connected by a hose, so that the liquid medicine transported along the dosing pipe 9-9 reaches each atomizing nozzle 9-7 through the hose.

[0036] Generally, an atomizing nozzle 9-7 and a disturbance rod 9-8 are installed on each supporting beam 9-6, and the distance between each atomizing nozzle 9-7 and the center line (that is, the center line of the dosing pipe 9-9) is the same or different, and the distance between each disturbance rod 9-8 and the center line is the same or different. During operation, the contaminated soil flow passing longitudinally through the dosing box 10 is hit by the rotating disturbance rods 9-8 to produce a disturbance effect, and each atomizing nozzle 9-7 sprays the atomized liquid into the contaminated soil during this process.

[0037] In this embodiment, the liquid medicine supply device includes a towable chassis 1 with wheels, on which a liquid medicine tank 2, a filter box 3 and a dosing pump 4 are installed, and the outlet of the liquid medicine tank 2 is connected to the inlet of the filter box 3, and the outlet of the filter box 3 is connected to the inlet of the dosing pump 4. The liquid medicine tank 2 stores repair / treatment liquid medicine, the filter box 3 is used to filter the liquid medicine, and the atomizing nozzle 9-7 is prevented from being blocked by filtering and intercepting particles in the liquid medicine, and the dosing pump 4 is used to pump the liquid medicine to the rotary spray dosing device 9 in a pressurized manner.

[0038] The effect of using the towable chassis 1 to carry the liquid medicine tank 2, the filter box 3 and the dosing pump 4 is that the liquid medicine supply device can be conveniently moved, so that when the liquid medicine in the liquid medicine tank 2 is used up, the liquid medicine supply device can be moved to the vicinity of the liquid medicine mixing tank by dragging, and the liquid medicine mixing tank receives the liquid medicine and then dragged to its original position.

[0039] Since the dosing pipe 9-9 of the rotary spray dosing device 9 is rotatable, a rotary sealing joint 9-1 is set at the outer end of the dosing pipe 9-9, and the rotary sealing joint is connected to the outlet of the dosing pump 4 through a pipeline. By setting the rotary sealing joint 9-1, the main part of the rotary spray dosing device 9 can rotate while ensuring the effective connection of the liquid medicine passage.

[0040] See also Figure 4 and Figure 5 , we can see that:

[0041] The crushing device 16 includes a box body with open top and bottom, a base frame 16-7 is installed inside the box body, an arc-shaped filter screen 16-8 is provided above the base frame 16-7, a crushing rotor with multiple crushing hammers is also installed inside the box body, and a crushing drive assembly for driving the crushing rotor to rotate is installed outside the box body.

[0042] As shown in the figure, the box body is composed of an upper box body 16-1 and a lower box body 16-2. Flanges are provided at the bottom of the upper box body 16-1 and the top of the lower box body 16-2 and the flanges are fixedly connected by bolts, so that the upper box body 16-1 can be disassembled as a whole, which is convenient for cleaning and maintenance of the interior. Support seats are installed on both sides of the lower box body 16-2, and both ends of the driving shaft 16-9 of the crushing rotor are installed in the bearing seats on the support seats. In this embodiment, an inspection port is provided on the side of the lower box body 16-2 and a detachable side box plate 16-3 is installed on the inspection port. When necessary, the side box plate 16-3 is disassembled to open the inspection port, and the internal chassis 16-7 and filter screen 16-8 are exposed.

[0043] The crushing rotor of the crushing device 16 includes a driving shaft 16-9, on which a plurality of supporting discs 16-10 are installed in the axial direction, and a crushing hammer includes a hammer rod 16-11 with a sleeve at the root and a hammer head 16-12 installed at the outer end of the hammer rod 16-11, and a pin is installed between adjacent supporting discs 16-10 and the sleeve of the hammer rod 16-11 is sleeved on the pin. In this way, when the driving shaft 16-9 drives each supporting disc 16-10 to rotate, each crushing hammer also rotates, and the hammer head 16-12 strikes the contaminated soil in the box and above the filter 16-8, breaking the agglomerated soil into soil particles, and the soil particles with qualified particle size pass through the filter 16-8 and fall downward to form a contaminated soil flow, and the soil particles and agglomerates with unqualified particle size stay above the filter 16-8 and continue to obtain the hammering and crushing effect.

[0044] In this embodiment, two front and rear limiting wedges 16-6 are installed on the inner wall of the upper box body 16-2. The limiting wedges 16-6 have two functions: one is to press and fix the filter screen 16-8 to prevent the filter screen 16-8 from loosening when the crushing rotor of the crushing device 16 is running; the other is to guide the contaminated soil above, provide two front and rear inclined surfaces, so that the contaminated soil is transferred to the middle and fully contacted with the crushing rotor.

[0045] In this embodiment, a wear-resistant lining plate 16-4 is installed on the inner wall of the upper box body 16-1 (including the front and rear inner walls and the left and right inner walls), which can improve the wear resistance of the crushing rotor when it is running and prevent the box body from being directly worn.

[0046] In this embodiment, the crushing drive assembly of the crushing device 16 includes a driven pulley 16-5 installed at the end of the driving shaft 16-9, and also includes a crushing motor 17. A driving pulley is installed on the output shaft of the crushing motor 17, and the driving pulley and the driven pulley 16-5 are connected by belt drive.

[0047] A feeding hopper 11 is installed at the bottom of the box body of the crushing device 16, that is, the bottom of the lower box body 16-2. The lower port of the feeding hopper 11 is located above the upper port of the dosing box 10. By setting the feeding hopper 11, the contaminated soil discharged from the crushing device 16 can smoothly enter the dosing box 10.

[0048] like Figure 1As shown in the figure, the dosing box 10 and its rotary spray dosing device 9, the crushing device 16 and the discharge funnel 11 are provided in two groups on the left and right, and are arranged in a mirror-symmetrical manner. Correspondingly, the feeding window 22 of the stirring device is provided with two on the left and right, and the same crushing motor 17 is used to simultaneously drive the driven pulleys 16-5 of the two crushing devices 16, and the liquid medicine supply device simultaneously supplies the repair / treatment liquid medicine to the two rotary spray dosing devices 9. The aforementioned double-station design can improve the crushing efficiency of the contaminated soil.

[0049] In this embodiment, a high-position bracket 15 with a track wheel 6 at the bottom is also included, and a crushing device 16 and a discharge hopper 11 are fixedly mounted on the top of the high-position bracket 15. A ground rail 7 is installed on the ground and the track wheel 6 moves along the ground rail 7. In this way, by shifting the high-position bracket 15, the crushing device 16 and the discharge hopper 11 can be kept away from the dosing box 10 and the stirring device below, which is beneficial to the cleaning and troubleshooting of the dosing box 10 and the stirring device to a certain extent. During normal operation, by pushing the high-position bracket 15, the lower ports of the two discharge hoppers 11 are aligned with the upper ports of the two dosing boxes 10. Furthermore, a ladder can be set on the high-position bracket 15, and when the crushing device 16 needs to be cleaned and troubleshooted, the maintenance personnel can reach the high position by climbing the ladder.

[0050] In this embodiment, a high-level conveyor 18 and a low-level conveyor 8 are also included. Two high-level conveyors 18 are provided. The ends of the two high-level conveyors 18 are located above the entrances of the two crushing devices 16, and the contaminated soil is sent to the crushing devices 16 below. The head end of the low-level conveyor 8 is located below the discharge pipe 19. The contaminated soil after mixing is discharged onto the low-level conveyor 8 and transferred to the yard for stacking for a certain process time to achieve the effect of repair / treatment.

Claims

1. A contaminated soil treatment device, characterized by: Including broken The invention relates to a device (16), a rotary spray dosing device (9), a stirring device and a liquid medicine supply device; the stirring device comprises a stirring box (13) with a feeding window (22) at the top and a discharge pipe (19) at the bottom, and a stirring impeller (12) driven by a stirring motor (5) is installed in the stirring box (13); a dosing box (10) is installed on the feeding window (22), the rotary spray dosing device (9) is installed on the dosing box (10), the rotary spray dosing device (9) comprises a shaft seat (9-2) installed on the box wall of the dosing box (10), a dosing pipe (9-9) is installed in the shaft seat (9-2), a multi-arm rotating plate (9-5) is installed at the inner end of the dosing pipe (9-9), and each arm has a plurality of rotating plates (9-5) on each end. An atomizing nozzle (9-7) and a disturbance rod (9-8) are installed on it, the atomizing nozzle (9-7) is connected to the dosing pipe (9-9), and also includes a rotary spray drive component for driving the dosing pipe (9-9) to rotate; the crushing device (16) includes a box body with open top and bottom, a base frame (16-7) is installed inside the box body, an arc-shaped filter screen (16-8) is arranged above the base frame (16-7), a crushing rotor with multiple crushing hammers is also installed inside the box body, and a crushing drive component for driving the crushing rotor to rotate is installed outside the box body; a feeding funnel (11) is installed at the bottom of the box body, and the lower port of the feeding funnel (11) is located above the upper port of the dosing box (10).

2. The contaminated soil treatment equipment according to claim 1, characterized in that: The dosing box (10), the rotary spray dosing device (9), the crushing device (16) and the discharge hopper (11) are arranged in two groups on the left and right and are arranged in a mirror-symmetrical manner.

3. The contaminated soil treatment equipment according to claim 2, characterized in that: A box cover (21) is provided on the top of the mixing box (13) and a feed window (22) is arranged on the box cover (21); a hinge (23) and a lock are provided between the box cover (21) and the mixing box (13); flanges are provided at the upper end of the feed window (22) and the lower end of the dosing box (10) and are fixedly connected by bolts.

4. The contaminated soil treatment equipment according to claim 3, characterized in that: The stirring impeller (12) comprises a wheel shaft, a positive spiral impeller is installed on the left part of the wheel shaft, and a reverse spiral impeller is installed on the right part. When the stirring impeller (12) rotates, the soil at both ends of the stirring box (13) is pushed toward the middle for stirring.

5. The contaminated soil treatment equipment according to claim 4, characterized in that: A radially extending support beam (9-6) is installed on each support arm of the multi-arm rotating plate (9-5), and a plurality of threaded mounting holes are provided on each support beam (9-6) along the length direction. Atomizing nozzles (9-7) and disturbance rods (9-8) are installed in the threaded mounting holes. The distances between each atomizing nozzle (9-7) and the center line are the same or different, and the distances between each disturbance rod (9-8) and the center line are the same or different.

6. The contaminated soil treatment equipment according to claim 5, characterized in that: The rotary spray driving assembly of the rotary spray dosing device (9) comprises a rotary spray motor (9-4) mounted on the wall of a dosing box (10), and a worm gear mechanism (9-3) is installed between the output shaft of the rotary spray motor (9-4) and the dosing pipe (9-9).

7. The contaminated soil treatment equipment according to claim 6, characterized in that: The crushing rotor of the crushing device (16) comprises a driving shaft (16-9), on which a plurality of supporting discs (16-10) are mounted in the axial direction, and the crushing hammer comprises a hammer rod (16-11) with a sleeve at the root and a hammer head (16-12) mounted at the outer end of the hammer rod (16-11), and a pin is mounted between adjacent supporting discs (16-10) and the sleeve of the hammer rod (16-11) is sleeved on the pin.

8. The contaminated soil treatment equipment according to any one of claims 1 to 7, characterized in that: It also comprises a high-position support (15) with a track wheel (6) at the bottom, a crushing device (16) and a discharge hopper (11) are fixedly mounted on the top of the high-position support (15), a ground rail (7) is installed on the ground and the track wheel (6) moves along the ground rail (7).

9. The contaminated soil treatment equipment according to any one of claims 1 to 7, characterized in that: The liquid medicine supply device comprises a towable chassis (1) with wheels, a liquid medicine tank (2), a filter box (3) and a dosing pump (4) are mounted on the towable chassis (1), the outlet of the liquid medicine tank (2) is connected to the inlet of the filter box (3), and the outlet of the filter box (3) is connected to the inlet of the dosing pump (4).

10. The contaminated soil treatment equipment according to any one of claims 1 to 7, characterized in that: It also includes a high-level conveyor (18) and a low-level conveyor (8), wherein the end of the high-level conveyor (18) is located above the entrance of the crushing device (16), and the head end of the low-level conveyor (8) is located below the discharge pipe (19), and an electric gate valve (14) is installed on the discharge pipe (19).

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