A method for repairing heavy metal contaminated soil

Abstract

The invention discloses a method for repairing heavy metal contaminated soil, and relates to the technical field of heavy metal contaminated soil repair. The method comprises a cylinder, a feed trough is fixedly connected to the side of the cylinder, a transmission component one is fixedly connected to the side of the feed trough, a support leg is fixedly connected to the lower end face of the transmission component one, a mounting plate is also fixedly connected to the inner wall of a conveyor belt shell, a vibration motor is arranged on the upper surface of the mounting plate, a crushing component is arranged in the cylinder, and is used for crushing soil blocks, so that it is more convenient to spray a repair liquid later, a screening component is arranged inside the cylinder, and is used for screening the crushed soil blocks to prevent large soil blocks from being missed, and a spraying and transporting component is arranged below the cylinder, and is used for transporting the crushed soil and spraying the repair liquid in the soil, so as to solve the problem that a large number of soil blocks exist in the soil, so that when spraying the repair agent, the spraying agent cannot be well sprayed inside the soil, and thus the repair agent cannot be well utilized.

Description

Technical Field

[0001] The present invention relates to the technical field of heavy metal contaminated soil remediation, and in particular to a heavy metal contaminated soil remediation method. Background Art

[0002] Heavy metal pollution is one of the most widespread and harmful environmental problems in today's soil pollution. Heavy metal pollution is different from pollution by other organic compounds. Organic compounds can be purified by microorganisms in nature to reduce or eliminate their harmfulness, while heavy metals are difficult to be degraded by microorganisms. The source of heavy metal pollution in the soil mainly comes from waste emissions generated by industries such as chemical, electroplating and electronics. High concentrations of heavy metal elements can produce severe toxicity. They are long-term pollutants in the environment and can easily affect the ecological structure and functional stability of the soil, causing poisoning or even death of animals and plants. Therefore, it is necessary to repair and manage the contaminated soil.

[0003] There are currently three ways to repair contaminated soil. The first is phytoremediation, which uses the growth characteristics of plants to degrade heavy metal elements in the soil. However, the repair cycle is long and has high requirements for land. When the degree of soil pollution is too high, this method cannot be used. The second is the microbial method, which adds microbial fertilizers to the soil to decompose the heavy metal elements in the soil, but there is still the problem of a long repair cycle. The third is to shovel up the contaminated soil and then spray the collected soil with a repair agent to neutralize the heavy metal elements in the soil.

[0004] The third remediation method mentioned above can quickly remediate the contaminated soil, but since the soil needs to be shoveled up, there will be a large number of clods in the soil. The existing remediation device lacks a device for crushing the clods, so when spraying the remediation agent, the spraying agent cannot be well sprinkled inside the soil, and thus the remediation agent cannot be well utilized. Summary of the invention

[0005] The purpose of the present invention is to provide a method for remediating heavy metal contaminated soil, which solves the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solution: a method for remediating heavy metal contaminated soil, comprising the following steps:

[0007] Soil preparation: First, the heavy metal contaminated soil is dug out from the ground and then placed on the conveying component 1. Next, the heavy metal contaminated soil is conveyed into the feed trough by the conveying component 1, and then enters the cylinder through the feed trough;

[0008] Crushing soil clods: Next, start the motor to drive the rotating rod to rotate. The rotating rod drives the crushing rod to move back and forth and rotate on its own to crush the soil clods in the cylinder;

[0009] Screening soil blocks: Under the rotation of the rotating rod 1, the meshing action of the bevel gear 1 and the bevel gear 2 will drive the fixed rod to move up and down reciprocatingly, and at the same time drive the screen plate to move up and down reciprocatingly to screen the broken soil blocks;

[0010] Transport spraying: The soil passing through the sieve plate will fall onto the conveyor belt, and then the conveyor belt will allow the soil to pass under the spray head and be sprayed with the repair agent;

[0011] Vibration turning over: During the movement of the conveyor belt, the vibration motor inside the conveyor belt will cause the conveyor belt to vibrate, and under the action of cam 2, the side of the conveyor belt will be repeatedly lifted, thereby turning over the soil on the conveyor belt, so that the repair agent can be sprayed more comprehensively.

[0012] Optionally, a feed trough is fixedly connected to the side of the cylinder, a conveying component 1 is fixedly connected to the side of the feed trough, a leg is fixedly connected to the lower end surface of the conveying component 1, and the repair method is also performed using the following components:

[0013] A crushing assembly, which is arranged in the cylinder and is used to crush soil clods, making it more convenient to spray the repair fluid later;

[0014] A screening component is arranged inside the cylinder and is used to screen the broken soil blocks to prevent large soil blocks from being missed;

[0015] A spraying and transporting assembly is arranged below the cylinder body and is used for transporting the crushed soil and spraying the repairing liquid in the soil.

[0016] Optionally, the crushing assembly comprises:

[0017] A baffle plate, the side surface of the baffle plate is fixedly connected to the inner wall of the upper end of the cylinder, the upper end surface of the baffle plate is fixedly connected to a support column, the upper end surface of the support column is fixedly connected to the support plate, the upper end surface of the support plate is provided with a motor, the output end of the motor is fixedly connected to a rotating rod 1, the lower end surface of the rotating rod 1 rotates through the upper end surface of the baffle plate, and the lower end surface of the rotating rod 1 is fixedly connected to a rotating disk, and the side surface of the rotating disk is rotatably connected to the inner wall of the cylinder.

[0018] Optionally, the crushing assembly further comprises:

[0019] A crushing rod, the upper end surface of the rotating disk is provided with four groups of penetrating arc grooves, the groove walls of the arc grooves are slidably connected to the upper end surface of the crushing rod, the lower end surface of the rotating disk is rotatably connected to a fixed disk, the lower end surface of the fixed disk is provided with four groups of penetrating strip grooves, and the surface of the crushing rod is also slidably connected to the inner wall of the strip groove;

[0020] A gear ring, the inner wall of which is fixedly connected to the surface of the crushing rod, the tooth surface of the gear ring is meshingly connected with a spur tooth row, the upper end surface of the spur tooth row is fixedly connected to the lower end surface of the fixed plate, and the lower end surface of the crushing rod is fixedly connected to a crushing frame.

[0021] Optionally, the screening component includes:

[0022] Bevel gear one, the upper end face of the bevel gear one is provided with a through slot, the slot wall of the slot is fixedly connected to the surface of the rotating rod one, the tooth surface of the bevel gear one is also meshingly connected with bevel gear two, the end face of the bevel gear two is fixedly connected to the rotating rod two, the surface of the rotating rod two is rotatably connected to a fixed plate one, and the lower end face of the fixed plate one is fixedly connected to the upper end face of the blocking plate.

[0023] Optionally, the screening component further includes:

[0024] A circular disk, the end face of the circular disk is fixedly connected to the end face of the rotating rod 2 facing away from the bevel gear 2, the end face of the circular disk facing away from the rotating rod 2 is also fixedly connected to a rotating column, the surface of the rotating column is rotatably connected to a cam, the lower end of the cam is hinged with a connecting frame, the lower end face of the connecting frame is fixedly connected to a fixing rod, the lower end face of the fixing rod is fixedly connected to a fixing plate 2, the side of the cylinder is also provided with a penetrating sliding groove, the groove wall of the sliding groove is slidably connected to the side face of the fixing plate 2, the side face of the fixing plate 2 is also fixedly connected to a sieve plate, and the side face of the sieve plate is slidably connected to the inner wall of the cylinder.

[0025] Optionally, the spraying and transporting assembly comprises:

[0026] A fixing frame, the surface of which is in contact with the lower end of the cylinder, the lower end surface of the fixing frame is fixedly connected to a fixing plate three, the side surface of the fixing plate three is fixedly connected to a fixing frame, the upper end surface of the fixing frame is fixedly connected to a conveyor belt shell, and the interior of the conveyor belt shell is fixedly connected to a support frame.

[0027] Optionally, the spraying and transporting assembly further includes:

[0028] A transmission rod, the end surface of the conveyor belt shell is rotatably connected to the end surface of the transmission rod, the middle surface of the transmission rod is fixedly connected to a friction wheel, the surface of the friction wheel is frictionally connected to a conveyor belt, the end of the conveyor belt is slidably connected to the surface of the conveyor belt shell, and the end surface of the conveyor belt shell is fixedly connected to a spray rack, and the inner wall of the spray rack is fixedly connected to a spray head.

[0029] Optionally, the spraying and transporting assembly further includes:

[0030] Cam 2, two cams form a group, a group of cams 2 is arranged on the surface of one transmission rod, a through slot is opened on the end face at the center of the circle of cam 2, the slot wall of the slot is fixedly connected to the end surface of the transmission rod, the inner wall of the conveyor belt housing is also fixedly connected to a mounting plate, the upper surface of the mounting plate is provided with a vibration motor, the output end of the vibration motor is fixedly connected to a vibration frame, and the upper end face of the vibration frame is fixedly abutted against the inner wall of the conveyor belt.

[0031] Compared with the prior art, the present invention has the following beneficial effects:

[0032] 1. The present invention breaks up the soil blocks in the cylinder by the reciprocating movement and self-rotation of the breaking rod in the cylinder, so that large soil blocks are turned into small soil blocks, so that the repair agent can be sprayed more comprehensively afterwards, further improving the repair effect of the repair device, and due to the movable characteristic of the breaking rod, the setting of the breaking rod in the cylinder can be further reduced, so that the cylinder can break up more soil blocks at one time, improving the efficiency of breaking soil blocks.

[0033] Second, the present invention can effectively ensure that the soil blocks entering the next process are small soil blocks by screening the broken soil blocks, thereby improving the effect of spraying the repair liquid afterwards, and can further improve the screening efficiency of the sieve plate by driving the sieve plate to move.

[0034] 3. The present invention causes the conveyor belt to vibrate, so that when the repair agent is sprayed, the soil on the conveyor belt will be scattered, thereby increasing the contact range with the disinfectant, and the two sides of the conveyor belt are lifted up by cam 2, so that the soil on both sides of the conveyor belt will move to the middle of the conveyor belt, and the soil will be scattered again through the vibration of the conveyor belt, thereby achieving the effect of turning over the soil, and further allowing the spraying agent to be sprayed on the soil more comprehensively. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 A flow chart of the structure of the present invention;

[0036] Figure 2 It is a front view of the structure of the present invention;

[0037] Figure 3 A top view of the structure of the present invention;

[0038] Figure 4 It is a front view of the internal structure of the conveyor belt housing in the present invention;

[0039] Figure 5 It is an enlarged view of the upper structure of the baffle plate in the present invention;

[0040] Figure 6 It is a side cross-sectional view of the internal structure of the cylinder in the present invention;

[0041] Figure 7 It is a bottom view of the internal structure of the cylinder in the present invention;

[0042] Figure 8 It is a top cross-sectional view of the internal structure of the cylinder in the present invention;

[0043] Fig. 9 For the present invention Figure 5 A magnified view of the structure at inner A;

[0044] Fig.10 For the present invention Figure 7 Magnified view of the structure at position B.

[0045] In the figure: 1, cylinder; 2, feed trough; 3, conveyor assembly 1; 4, support leg; 5, fixed frame; 6, fixed plate 3; 7, fixed frame; 8, conveyor belt shell; 9, spray frame; 10, fixed plate 2; 11, fixed rod; 12, vibration motor; 13, mounting plate; 14, support frame; 15, conveyor belt; 16, friction wheel; 17, transmission rod; 18, cam 2; 19, nozzle; 20, vibration frame; 21, motor; 22, Circular disc; 23, fixed plate 1; 24, rotating rod 2; 25, blocking plate; 26, bevel gear 2; 27, bevel gear 1; 28, rotating rod 1; 29, supporting column; 30, supporting plate; 31, sieve disc; 32, crushing frame; 33, strip slide; 34, straight tooth row; 35, fixed disc; 36, crushing rod; 37, arc groove; 38, gear ring; 39, rotating disc; 40, connecting frame; 41, cam; 42, rotating column. DETAILED DESCRIPTION

[0046] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0047] For example, see Figures 1 to 10, this implementation provides a method for remediating heavy metal contaminated soil as follows:

[0048] First, the heavy metal contaminated soil is dug out from the ground and then placed on the conveying component 1 3. Next, the heavy metal contaminated soil is conveyed into the feed trough 2 by the conveying component 1 3, and then enters the cylinder 1 from the feed trough 2;

[0049] Next, the motor 21 is started to drive the rotating rod 28 to rotate, and the rotating rod 28 drives the crushing rod 36 to move back and forth and rotate on its own to crush the soil blocks in the cylinder 1;

[0050] And under the rotation of the rotating rod 1 28, the meshing action of the bevel gear 1 27 and the bevel gear 2 26 will drive the fixed rod 11 to move up and down reciprocatingly, and at the same time drive the sieve plate 31 to move up and down reciprocatingly to screen the crushed soil blocks;

[0051] Then the soil passing through the sieve plate 31 will fall onto the conveyor belt 15, and then the conveyor belt 15 will make the soil pass under the spray head 19 to be sprayed with the repair agent;

[0052] During the movement of the conveyor belt 15, the vibration motor 12 inside the conveyor belt 15 will cause the conveyor belt 15 to vibrate, and under the action of the cam 18, the side of the conveyor belt 15 will be repeatedly lifted, thereby turning over the soil on the conveyor belt 15, so that the repair agent can be sprayed more comprehensively.

[0053] See also Figures 2 to 10 The present method for remediating heavy metal contaminated soil also uses the following components:

[0054] A cylinder 1, a feed trough 2 is fixedly connected to the side of the cylinder 1, a conveying assembly 3 is fixedly connected to the side of the feed trough 2, and a support leg 4 is fixedly connected to the lower end surface of the conveying assembly 3;

[0055] A crushing assembly is arranged in the cylinder 1, and the crushing assembly includes:

[0056] The baffle plate 25, the side of the baffle plate 25 is fixedly connected to the inner wall of the upper end of the cylinder 1, the upper end surface of the baffle plate 25 is fixedly connected to the support column 29, the upper end surface of the support column 29 is fixedly connected to the support plate 30, the upper end surface of the support plate 30 is provided with a motor 21, the output end of the motor 21 is fixedly connected to a rotating rod 28, the lower end surface of the rotating rod 28 rotates through the upper end surface of the baffle plate 25, and the lower end surface of the rotating rod 28 is fixedly connected to a rotating disk 39, and the side of the rotating disk 39 is rotatably connected to the inner wall of the cylinder 1;

[0057] The upper end surface of the breaker rod 36 and the rotating disk 39 is provided with four groups of penetrating arc grooves 37, and the groove wall of the arc groove 37 is slidably connected to the upper end surface of the breaker rod 36. The lower end surface of the rotating disk 39 is rotatably connected to the fixed disk 35, and the lower end surface of the fixed disk 35 is provided with four groups of penetrating strip grooves 33. The surface of the breaker rod 36 is also slidably connected to the inner wall of the strip groove 33.

[0058] The inner wall of the gear ring 38 is fixedly connected to the surface of the crushing rod 36, the tooth surface of the gear ring 38 is meshed with the spur tooth row 34, the upper end surface of the spur tooth row 34 is fixedly connected to the lower end surface of the fixed plate 35, and the lower end surface of the crushing rod 36 is fixedly connected to the crushing frame 32.

[0059] In this embodiment, when using the soil remediation device, the contaminated soil is first placed on the conveying assembly 3, and then transported into the cylinder 1 by the conveying assembly 3, and then the motor 21 is started to rotate to drive the rotating rod 28 to rotate, and the rotation of the rotating rod 28 further drives the rotating disk 39 to rotate, and the rotation of the rotating disk 39 drives the crushing rod 36 to slide in the arc groove 37, and under the limiting action of the strip slide groove 33 on the fixed plate 35, the crushing rod 36 will further slide in the strip slide groove 33 toward the inner wall of the cylinder 1, thereby driving the gear ring 38 to roll on the straight tooth row 34, so that the gear ring 38 rotates, and further drives the crushing rod 36 to rotate. The rotation of the crushing rod 36 can further drive the crushing frame 32 fixedly connected thereto to crush the soil blocks in the cylinder 1, and by repeatedly rotating the motor 21 forward and reverse, the reciprocating movement of the crushing rod 36 can be further realized;

[0060] The crushing assembly can crush the soil blocks in the cylinder 1 by the reciprocating movement and self-rotation of the crushing rod 36 in the cylinder 1, thereby turning large soil blocks into small soil blocks, so that the repair agent can be sprayed more comprehensively later, further improving the repair effect of the repair device, and due to the movable characteristic of the crushing rod 36, the setting of the crushing rod 36 in the cylinder 1 can be further reduced, so that the cylinder 1 can crush more soil blocks at one time, thereby improving the efficiency of crushing soil blocks.

[0061] Embodiment 2, based on the above embodiment:

[0062] See also Figure 2 , Figure 5 , Figure 6 and Fig. 9 The present method for remediating heavy metal contaminated soil also uses a screening component, which is arranged inside the cylinder 1 and includes:

[0063] Bevel gear 1 27, the upper end surface of bevel gear 1 27 is provided with a through slot, the slot wall of the slot is fixedly connected to the surface of rotating rod 1 28, the tooth surface of bevel gear 1 27 is also meshedly connected with bevel gear 2 26, the end surface of bevel gear 26 is fixedly connected with rotating rod 24, the surface of rotating rod 24 is rotatably connected with fixed plate 1 23, the lower end surface of fixed plate 1 23 is fixedly connected to the upper end surface of blocking plate 25;

[0064] The circular plate 22, the end surface of the circular plate 22 is fixedly connected to the end surface of the rotating rod 24 away from the bevel gear 26, the end surface of the circular plate 22 away from the rotating rod 24 is also fixedly connected to the rotating column 42, the surface of the rotating column 42 is rotatably connected to the cam 41, the lower end of the cam 41 is hinged with a connecting frame 40, the lower end surface of the connecting frame 40 is fixedly connected to the fixing rod 11, the lower end surface of the fixing rod 11 is fixedly connected to the fixing plate 2 10, the side of the cylinder 1 is also provided with a through sliding groove, the groove wall of the sliding groove is slidably connected to the side of the fixing plate 2 10, the side of the fixing plate 2 10 is also fixedly connected to the sieve plate 31, and the side of the sieve plate 31 is slidably connected to the inner wall of the cylinder 1

[0065] In this embodiment, during the rotation of the rotating rod 1 28, the bevel gear 1 27 is driven to rotate at the same time, and the rotation of the bevel gear 1 27 further drives the bevel gear 26 to rotate, so that the rotating rod 24 rotates, driving the circular plate 22 to rotate, and then the cam 41 is driven up and down by the action of the rotating column 42, and then the fixed rod 11 is driven up and down, driving the sieve plate 31 to screen the crushed soil blocks thereon;

[0066] The setting of the screening component can effectively ensure that the soil blocks entering the next process are small soil blocks by screening the broken soil blocks, thereby improving the effect of spraying the repair liquid afterwards, and can further improve the screening efficiency of the sieve plate 31 by driving the sieve plate 31 to move.

[0067] Embodiment 3, based on the above embodiment:

[0068] See also Figure 2 , Figure 4 and Figure 6 The present method for remediating heavy metal contaminated soil also uses a spraying and transporting assembly, which is arranged below the cylinder 1 and includes:

[0069] A fixing frame 5, the surface of the fixing frame 5 is in contact with the lower end of the cylinder 1, the lower end surface of the fixing frame 5 is fixedly connected with a fixing plate 3 6, the side surface of the fixing plate 3 6 is fixedly connected with a fixing frame 7, the upper end surface of the fixing frame 7 is fixedly connected with a conveyor belt shell 8, and the interior of the conveyor belt shell 8 is fixedly connected with a support frame 14;

[0070] The transmission rod 17, the end surface of the conveyor belt housing 8 is rotatably connected to the end surface of the transmission rod 17, the middle surface of the transmission rod 17 is fixedly connected to the friction wheel 16, the surface of the friction wheel 16 is frictionally connected to the conveyor belt 15, the end of the conveyor belt 15 is slidably connected to the surface of the conveyor belt housing 8, and the end surface of the conveyor belt housing 8 is fixedly connected to the spray rack 9, and the inner wall of the spray rack 9 is fixedly connected to the spray head 19;

[0071] Cam 2 18, two cams 18 form a group, a group of cams 18 is arranged on the surface of a transmission rod 17, a through slot is opened on the end face at the center of the cam 18, the slot wall is fixedly connected to the end surface of the transmission rod 17, the inner wall of the conveyor belt housing 8 is also fixedly connected to the mounting plate 13, the upper surface of the mounting plate 13 is provided with a vibration motor 12, the output end of the vibration motor 12 is fixedly connected to the vibration frame 20, and the upper end face of the vibration frame 20 is fixedly abutted against the inner wall of the conveyor belt 15.

[0072] In this embodiment, the crushed and screened soil will fall onto the conveyor belt 15, and then the conveyor belt 15 drives the soil to move forward, and the vibration motor 12 arranged in the conveyor belt 15 drives the vibration frame 20 to knock the surface of the conveyor belt 15, so that the conveyor belt 15 vibrates, and then when the repair agent is sprayed, the soil on the conveyor belt 15 will be scattered, thereby increasing the contact range with the disinfectant, and because during the movement of the conveyor belt 15, the friction wheel 16 will drive the transmission rod 17 to rotate, and then drive the cam 18 to lift up the two sides of the conveyor belt 15, so that the soil on both sides of the conveyor belt 15 will move to the middle of the conveyor belt 15, and then the soil will be scattered again through the vibration of the conveyor belt 15, thereby achieving the effect of turning the soil over, and further allowing the spraying agent to be sprayed on the soil more comprehensively;

[0073] The arrangement of the spray transport assembly causes the conveyor belt 15 to vibrate, thereby causing the soil on the conveyor belt 15 to disperse when the repair agent is sprayed, thereby increasing the contact range with the disinfectant, and using the cam 18 to lift up both sides of the conveyor belt 15, so that the soil on both sides of the conveyor belt 15 moves to the middle of the conveyor belt 15, and then the soil is dispersed again through the vibration of the conveyor belt 15, thereby achieving the effect of turning over the soil, and further allowing the spray to be sprayed on the soil more comprehensively.

[0074] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A method for remediating heavy metal contaminated soil, characterized in that: The following steps are involved: S1: Soil preparation, digging out the heavy metal contaminated soil from the ground, placing it on the conveying component 1 (3) and entering the cylinder (1) through the feed trough (2); S2: crushing soil lumps, starting the motor (21) to drive the rotating rod (28) to rotate, and the rotating rod (28) drives the crushing rod (36) to move, so as to crush the soil lumps in the cylinder (1); S3: screening the soil blocks, under the rotation of the rotating rod 1 (28), the fixed rod (11) and the sieve plate (31) are synchronously driven to move up and down reciprocatingly to screen the broken soil blocks; S4: transport spraying, the soil passing through the sieve plate (31) will fall onto the conveyor belt (15), and the conveyor belt (15) will make the soil pass under the spray head (19) to spray the repair agent on it; S5: Vibration flipping, the vibration motor (12) causes the conveyor belt (15) to vibrate, and under the action of the second cam (18), the side of the conveyor belt (15) is repeatedly raised to flip the soil on the conveyor belt (15), so that the repair agent is sprayed more comprehensively; The rotation of the rotating rod 1 (28) in step S2 drives the crushing rod (36) to move back and forth and rotate; The side of the cylinder (1) is fixedly connected to a feed trough (2), and the side of the feed trough (2) is fixedly connected to a conveying component 1 (3). The repair method is also performed using the following components: A crushing assembly, the crushing assembly being arranged in the cylinder (1) and used for crushing soil clods, thereby making it more convenient to spray the repair fluid later; A screening component, the screening component being arranged inside the cylinder (1) and used for screening the broken soil clods to prevent large soil clods from being missed; A spraying and transporting assembly, the spraying and transporting assembly being arranged below the cylinder (1) and being used for transporting the crushed soil and spraying a repairing liquid into the soil; The crushing assembly comprises: a baffle plate (25), the side surface of the baffle plate (25) being fixedly connected to the inner wall of the upper end of the cylinder (1), the upper end surface of the baffle plate (25) being fixedly connected to a support column (29), the upper end surface of the support column (29) being fixedly connected to a support plate (30), the upper end surface of the support plate (30) being provided with a motor (21), the output end of the motor (21) being fixedly connected to a rotating rod (28), the lower end surface of the rotating rod (28) being rotatably passed through the upper end surface of the baffle plate (25), and the lower end surface of the rotating rod (28) being fixedly connected to a rotating disk (39), the side surface of the rotating disk (39) being rotatably connected to the inner wall of the cylinder (1); The crushing assembly also includes: A crushing rod (36), the upper end surface of the rotating disk (39) is provided with four groups of penetrating arc grooves (37), the groove walls of the arc grooves (37) are slidably connected to the upper end surface of the crushing rod (36), the lower end surface of the rotating disk (39) is rotatably connected to a fixed disk (35), the lower end surface of the fixed disk (35) is provided with four groups of penetrating strip grooves (33), and the surface of the crushing rod (36) is also slidably connected to the inner wall of the strip groove (33); a gear ring (38), the inner wall of the gear ring (38) being fixedly connected to the surface of the crushing rod (36), the tooth surface of the gear ring (38) being meshingly connected to a spur tooth row (34), the upper end surface of the spur tooth row (34) being fixedly connected to the lower end surface of the fixed plate (35), and the lower end surface of the crushing rod (36) being fixedly connected to a crushing frame (32); The spraying transport assembly comprises: A fixing ring (5), the surface of the fixing ring (5) abutting against the lower end of the cylinder (1), the lower end surface of the fixing ring (5) being fixedly connected to a fixing plate three (6), the side surface of the fixing plate three (6) being fixedly connected to a fixing frame (7), the upper end surface of the fixing frame (7) being fixedly connected to a conveyor belt shell (8), and the interior of the conveyor belt shell (8) being fixedly connected to a support frame (14); The spray transport assembly also includes: A transmission rod (17), the end surface of the conveyor belt housing (8) is rotatably connected to the end surface of the transmission rod (17), the middle surface of the transmission rod (17) is fixedly connected to a friction wheel (16), the surface of the friction wheel (16) is frictionally connected to a conveyor belt (15), the end of the conveyor belt (15) is slidably connected to the surface of the conveyor belt housing (8), and the end surface of the conveyor belt housing (8) is fixedly connected to a spray rack (9), and the inner wall of the spray rack (9) is fixedly connected to a spray head (19); Cam 2 (18), two of the cam 2 (18) form a group, a group of the cam 2 (18) is arranged on the surface of one of the transmission rods (17), a through slot is opened on the end surface at the center of the circle of the cam 2 (18), the slot wall of the slot is fixedly connected to the end surface of the transmission rod (17), the inner wall of the conveyor belt housing (8) is also fixedly connected to a mounting plate (13), the upper surface of the mounting plate (13) is provided with a vibration motor (12), the output end of the vibration motor (12) is fixedly connected to a vibration frame (20), and the upper end surface of the vibration frame (20) is fixedly abutted against the inner wall of the conveyor belt (15).

2. The method for remediating heavy metal contaminated soil according to claim 1, characterized in that: The screening assembly comprises a bevel gear 1 (27), the upper end surface of the bevel gear 1 (27) is provided with a through slot, the slot wall of the slot is fixedly connected to the surface of the rotating rod 1 (28), the tooth surface of the bevel gear 1 (27) is also meshedly connected to the bevel gear 2 (26), and the end surface of the bevel gear 2 (26) is fixedly connected to the rotating rod 2 (24).

3. The method for remediating heavy metal contaminated soil according to claim 2, characterized in that: The surface of the second rotating rod (24) is rotatably connected to a fixing plate (23), and the lower end surface of the fixing plate (23) is fixedly connected to the upper end surface of the blocking plate (25).

4. The method for remediating heavy metal contaminated soil according to claim 3, characterized in that: The screening component also includes: A circular plate (22), the end surface of the circular plate (22) being fixedly connected to the end surface of the second rotating rod (24) facing away from the second bevel gear (26), the end surface of the circular plate (22) facing away from the second rotating rod (24) is also fixedly connected to a rotating column (42), the surface of the rotating column (42) is rotatably connected to a cam (41), the lower end of the cam (41) is hingedly connected to a connecting frame (40), the lower end surface of the connecting frame (40) is fixedly connected to a fixing rod (11), the lower end surface of the fixing rod (11) is fixedly connected to a fixing plate (10), and the side surface of the cylinder (1) is also provided with a penetrating sliding groove.

5. The method for remediating heavy metal contaminated soil according to claim 4, characterized in that: The groove wall of the sliding groove is slidably connected to the side surface of the second fixed plate (10), the side surface of the second fixed plate (10) is also fixedly connected to the sieve plate (31), and the side surface of the sieve plate (31) is slidably connected to the inner wall of the cylinder (1).

Images