Soil heavy metal pollution treatment device and method

Abstract

The invention belongs to the technical field of soil treatment, and particularly relates to a soil heavy metal pollution treatment device and method. And the treatment tank is fixed to the inner side of the right-angle moving seat in a suspended mode, the bottom of the top of the treatment tank fixedly communicates with an agent box and a discharging pipeline, the side edge of the treatment tank fixedly communicates with a feeding pipeline, and the feeding pipeline is obliquely arranged. The device has the advantages that through cooperative work of the mixing assembly, the pre-crushing assembly, the intermittent chemical feeding assembly and the material turning assembly, comprehensive and uniform treatment on soil is achieved, the degradation speed and thoroughness of pollutants are remarkably improved, efficient crushing and mixing functions are achieved, optimal utilization of resources is ensured through an accurate chemical feeding mechanism, and the device is suitable for popularization and application. And meanwhile, due to the flexible movement and the self-adaptive supporting capacity, the device can stably operate in various complex environments, and technical breakthrough and practical value improvement are brought to the soil remediation industry.

Description

Technical Field

[0001] This invention relates to the field of soil remediation technology, and in particular to a device and method for treating heavy metal pollution in soil. Background Technology

[0002] Remediation of heavy metal pollution in soil is a crucial issue in environmental protection. With rapid industrialization and urbanization, the content of heavy metals in soil is constantly rising, seriously threatening ecological security and human health. Heavy metals such as lead, mercury, and cadmium are not easily degraded in soil and can easily enter the human body through the food chain, leading to various health problems. Therefore, how to efficiently and safely remediate heavy metal pollution in soil has become a critical issue that urgently needs to be addressed.

[0003] In the process of remediating heavy metal pollution in soil, traditional treatment devices often result in soil clumps when transported to the machine, making it difficult to disperse and affecting the remediation work, thus reducing efficiency. In addition, when mixing soil and chemicals, the chemicals are usually added directly to the soil, leading to uneven distribution and affecting the treatment effect. Furthermore, traditional devices lack effective stirring and turning mechanisms during the treatment process, which can easily cause soil sedimentation, further reducing the contact efficiency between chemicals and soil.

[0004] To address the aforementioned issues, we propose a device and method for treating heavy metal pollution in soil. Summary of the Invention

[0005] The purpose of this invention is to solve the problems in the background art by proposing a device and method for treating heavy metal pollution in soil.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a device for treating heavy metal pollution in soil, comprising: Right-angle movable seat; The treatment tank is suspended and fixed inside the right-angle moving base. The top and bottom of the treatment tank are respectively fixedly connected to a medicine box and a feeding pipe, and the side of the treatment tank is fixedly connected to a feeding pipe, which is inclined. The mixing assembly includes a stirring shaft rotatably mounted inside a treatment tank, a drive motor for driving the stirring shaft to rotate is fixed on the outer surface of the treatment tank, and a plurality of crushing blades are fixed on the surface of the stirring shaft; Intermittent drug delivery component, used to control the intermittent delivery of drugs from the drug cartridge into the treatment tank; A pre-crushing component is installed inside the feed pipe; The opening and closing assembly is located at the end of the discharge pipe furthest from the treatment tank; The material turning assembly is installed inside the treatment tank.

[0007] In the aforementioned device for treating heavy metal pollution in soil, the pre-crushing component includes a crushing roller rotatably installed inside a feed pipe. A first driven wheel is rotatably installed on the outer surface of the feed pipe. The first driven wheel is connected to a first driving wheel via a first belt drive. The first driven wheel is rotatably installed on the surface of the treatment tank and coaxially connected to the stirring shaft.

[0008] In the above-mentioned device for treating heavy metal pollution in soil, the intermittent drug feeding component includes a drug control roller rotatably installed in the lower port of the drug box. The surface of the drug control roller is provided with multiple drug storage grooves arranged in a circumferential array. A second driven wheel coaxially connected to the drug control roller is rotatably installed on the outer surface of the drug box. The second driven wheel is connected to a second driving wheel via a second belt drive and is coaxially fixed with the first driving wheel.

[0009] In the aforementioned device for treating heavy metal pollution in soil, the material turning assembly includes multiple material turning plates that slide against the inner surface of the treatment tank, and each material turning plate is fixed to the surface of the stirring shaft by two connecting rods.

[0010] In the aforementioned device for treating heavy metal pollution in soil, the opening and closing assembly includes a right-angle sealing plate that slides through the side of the right-angle moving seat and slides against the lower port of the discharge pipe. A spring is connected between the right-angle sealing plate and the outer surface of the right-angle moving seat.

[0011] In the aforementioned device for treating heavy metal pollution in soil, four casters are installed at the bottom of the right-angle moving base, which are respectively placed at the four corners of the bottom of the right-angle moving base. A handle is fixed on the outside of the right-angle moving base. A support plate is provided at the bottom of the right-angle moving base, and a hydraulic cylinder for driving the support plate to move vertically is fixed on the upper side of the right-angle moving base.

[0012] In the above-mentioned device for treating heavy metal pollution in soil, the top of the reagent box is open and a sealing cover is installed by rotating the self-locking shaft, and a handle is fixed to the top of the sealing cover.

[0013] In the aforementioned device for treating heavy metal pollution in soil, a connecting frame is fixed at the bottom of the feed pipe, and the other end of the feed pipe is fixed to a right-angle movable seat.

[0014] In the aforementioned device for treating heavy metal pollution in soil, the diameter of the first driving wheel is larger than the diameter of the first driven wheel, and the diameter of the second driving wheel is smaller than the diameter of the second driven wheel.

[0015] A method for remediating heavy metal pollution in soil includes the following steps: S1. The soil to be treated is fed into the treatment tank through the feed pipe. During this process, the drive motor is started to drive the stirring shaft to rotate. Under the transmission of the first driven wheel, the first belt and the first driving wheel, the crushing roller rotates and begins the pre-crushing process of the soil to improve the efficiency of subsequent treatment. S2. While the drive motor drives the mixing shaft, it can also cause the crushing blades to further crush the soil. S3. Driven by the second driven wheel, the second belt and the second driving wheel, the control roller rotates, causing the pesticide in the pesticide box to enter the treatment tank in batches through different storage tanks, ensuring that the pesticide comes into uniform contact with the soil and reacts. S4. Driven by the mixing shaft, the tipping plate continuously agitates the soil in the treatment tank, preventing soil sedimentation and improving the treatment effect. S5. After treatment is completed, pull the right-angle sealing plate outward to open the discharge pipe and discharge the treated soil out of the device. At the same time, the spring will automatically reset to ensure sealing. S6. Operators can move the equipment to the next work point using the handle and casters, and use the hydraulic cylinder to adjust the height of the support plate so that it touches the ground and lifts the right-angle moving seat to ensure stable operation of the equipment.

[0016] Compared with existing technologies, the advantages of this device and method for treating heavy metal pollution in soil are as follows: 1. This device, through the ingenious combination of a pre-crushing component and a mixing component, can significantly increase the contact area between the soil and the pesticide, thereby greatly improving the treatment efficiency. The crushing roller in the pre-crushing component can initially crush the soil before it enters the treatment tank, while the stirring shaft and crushing blades in the mixing component can further crush the soil into smaller particles. This dual crushing mechanism ensures that the pesticide can penetrate every corner of the soil and fully exert its treatment effect.

[0017] 2. The intermittent drug delivery component is designed to release the drug evenly in batches through the storage tank on the control roller. This design not only avoids the waste caused by excessive drug delivery at one time, but also prevents incomplete treatment due to insufficient drug. At the same time, the synchronous rotation of the control roller and the mixing shaft ensures perfect coordination between drug release and soil mixing, making the treatment process more scientific and efficient.

[0018] 3. The material turning component effectively solves the problem of soil sedimentation that may occur in the treatment tank, ensuring the continuity and stability of the treatment process. The turning plate is fixed to the mixing shaft by a connecting rod. As the mixing shaft rotates, it continuously turns the soil. This dynamic mixing method not only prevents soil clumping but also ensures that each piece of soil can fully contact the agent, thereby improving the overall treatment effect.

[0019] 4. The device's mobility and adjustable support plate design allow it to adapt to different working environments, improving its flexibility and practicality. Four swivel casters enable easy movement to various complex terrains, while the hydraulically driven support plate automatically adjusts its height according to ground conditions, ensuring stable operation under all circumstances. This design not only reduces the operator's workload but also improves the equipment's efficiency and applicability.

[0020] In summary, this invention achieves comprehensive and uniform soil treatment through the coordinated operation of the mixing component, pre-crushing component, intermittent drug feeding component, and turning component, significantly improving the degradation speed and thoroughness of pollutants. It not only possesses efficient crushing and mixing functions, but also ensures optimal resource utilization through a precise drug delivery mechanism. Furthermore, its flexible mobility and adaptive support capabilities enable it to operate stably in various complex environments, bringing both technological breakthroughs and practical value enhancements to the soil remediation industry. Attached Figure Description

[0021] Figure 1 This is a first-view structural schematic diagram of a soil heavy metal pollution remediation device proposed in this invention. Figure 2 This is a cross-sectional structural diagram of a soil heavy metal pollution treatment device proposed in this invention; Figure 3 This is a second-view structural schematic diagram of a soil heavy metal pollution remediation device proposed in this invention. Figure 4 This is a partial structural schematic diagram of a soil heavy metal pollution treatment device proposed in this invention.

[0022] In the diagram: 1 Right-angle moving seat, 2 Treatment tank, 3 Chemical box, 4 Discharge pipe, 5 Feed pipe, 6 Stirring shaft, 7 Drive motor, 8 Crusher, 9 Connecting rod, 10 Tilting plate, 11 Crusher roller, 12 First driven wheel, 13 First driving wheel, 14 First belt, 15 Control roller, 16 Storage tank, 17 Second driven wheel, 18 Second driving wheel, 19 Second belt, 20 Caster wheel, 21 Handle, 22 Right-angle sealing plate, 23 Spring, 24 Support plate, 25 Hydraulic cylinder, 26 Sealing cover, 27 Handle, 28 Connecting frame. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] Reference Figures 1 to 4 A device for treating heavy metal pollution in soil, comprising: Right-angle movable base 1; four casters 20 are installed at the bottom of the right-angle movable base 1, which are respectively placed at the four corners of the bottom of the right-angle movable base 1, and handles 21 are fixed on the outside of the right-angle movable base 1. A support plate 24 is provided at the bottom of the right-angle movable base 1, and a hydraulic cylinder 25 for driving the support plate 24 to move vertically is fixed on the upper side of the right-angle movable base 1, which facilitates the movement of the device. At the same time, after moving to the designated position, the support plate 24 can be lowered to touch the ground by the hydraulic cylinder 25, thereby lifting the device and ensuring the stability of the equipment during operation.

[0025] Treatment tank 2 is suspended and fixed inside the right-angle moving base 1. The top and bottom of treatment tank 2 are respectively fixedly connected to a medicine box 3 and a discharge pipe 4, and the side of treatment tank 2 is fixedly connected to a feed pipe 5, which is set at an inclination.

[0026] The mixing assembly includes a stirring shaft 6 rotatably mounted inside the treatment tank 2. A drive motor 7 for driving the stirring shaft 6 to rotate is fixed on the outer surface of the treatment tank 2. Multiple crushing blades 8 are fixed on the surface of the stirring shaft 6. The rotation of the stirring shaft 6 drives the crushing blades 8 to further crush the soil inside the treatment tank 2, making it finer, thereby increasing the contact area between the soil and the agent.

[0027] An intermittent drug delivery assembly is used to control the intermittent delivery of medicine from the medicine box 3 into the treatment tank 2. The intermittent drug delivery assembly includes a control roller 15 rotatably mounted in the lower port of the medicine box 3. The surface of the control roller 15 has multiple storage tanks 16 arranged in a circumferential array. A second driven wheel 17 coaxially connected to the control roller 15 is rotatably mounted on the outer surface of the medicine box 3. The second driven wheel 17 is connected to a second driving wheel 18 via a second belt 19 and is coaxially fixed with the first driving wheel 13. As the control roller 15 rotates, the storage tanks 16 pass through the lower port of the medicine box 3 in sequence, carrying out a quantitative amount of medicine and releasing it into the treatment tank 2. This not only achieves precise drug delivery but also avoids the problems of drug waste or overuse.

[0028] The pre-crushing assembly is installed inside the feed pipe 5. The pre-crushing assembly includes a crushing roller 11 rotatably installed inside the feed pipe 5. A first driven wheel 12 is rotatably installed on the outer surface of the feed pipe 5. The first driven wheel 12 is connected to a first driving wheel 13 via a first belt 14. The first driving wheel 13 is rotatably installed on the surface of the treatment tank 2 and coaxially connected to the stirring shaft 6. The crushing roller 11 achieves preliminary crushing of the material through the transmission of the first driven wheel 12 and the first belt 14. The coaxial connection design of the first driving wheel 12 and the stirring shaft 6 ensures the stability of power transmission and improves the overall working efficiency. The structural layout inside the feed pipe 5 is reasonable, which facilitates the smooth entry of materials into the subsequent processing stage.

[0029] The opening and closing assembly is located at the end of the discharge pipe 4 away from the treatment tank 2. The opening and closing assembly includes a right-angle sealing plate 22 that slides through the side of the right-angle moving seat 1 and slides against the lower port of the discharge pipe 4. A spring 23 is connected between the right-angle sealing plate 22 and the outer surface of the right-angle moving seat 1. The right-angle sealing plate 22 can automatically reset under the action of the spring 23 to ensure the sealing of the discharge pipe 4. When it is necessary to open, the external force overcomes the elastic force of the spring 23 and pulls the right-angle sealing plate 22 to slide along the right-angle moving seat 1, thereby opening the port of the discharge pipe 4 and realizing the smooth passage of materials.

[0030] The material turning assembly is installed inside the treatment tank 2. The material turning assembly includes multiple material turning plates 10 that slide against the inner surface of the treatment tank 2. Each material turning plate 10 is fixed to the surface of the stirring shaft 6 by two connecting rods 9. The material turning plates 10 continuously stir the soil as the stirring shaft 6 rotates, preventing soil sedimentation during the treatment process. This design ensures that the soil can be mixed evenly with the agent, avoiding uneven treatment caused by soil clumping.

[0031] Specifically, the top of the medicine box 3 is open and a sealing cover 26 is installed by rotating it through a self-locking shaft. A handle 27 is fixed to the top of the sealing cover 26. The tight closure of the sealing cover 26 ensures the safety of the medicine during transportation and storage. The handle 27 makes it easier to open and close the sealing cover 26, and users can complete the operation without effort.

[0032] Specifically, a connecting frame 28 is fixed at the bottom of the feed pipe 5, and its other end is fixed to the right-angle moving seat 1, which can effectively enhance the stability between the feed pipe 5 and the right-angle moving seat 1, and ensure that the equipment will not loosen due to vibration or external force during operation.

[0033] Specifically, the diameter of the first driving wheel 13 is larger than the diameter of the first driven wheel 12, and the diameter of the second driving wheel 18 is smaller than the diameter of the second driven wheel 17, so that the transmission system can achieve different speeds and torque outputs.

[0034] A method for remediating heavy metal pollution in soil includes the following steps: S1. The soil to be treated is fed into the treatment tank 2 through the feed pipe 5. During this process, the drive motor 7 is started to drive the stirring shaft 6 to rotate. Under the transmission of the first driven wheel 12, the first belt 14 and the first drive wheel 13, the crushing roller 11 rotates to start the pre-crushing process of the soil in order to improve the efficiency of subsequent treatment. S2. While the drive motor 7 drives the stirring shaft 6, the crushing blade 8 can further crush the soil. S3. Under the transmission of the second driven wheel 17, the second belt 19 and the second driving wheel 18, the control roller 15 rotates, so that the agent in the agent box 3 enters the treatment tank 2 in batches through different storage tanks 16, ensuring that the agent comes into uniform contact with the soil and reacts. S4. Driven by the stirring shaft 6, the tipping plate 10 continuously stirs the soil in the treatment tank 2 to prevent soil deposition and improve the treatment effect. S5. After treatment is completed, pull the right-angle sealing plate 22 outward to open the discharge pipe 4 and discharge the treated soil out of the device. At the same time, the spring 23 automatically resets to ensure sealing. S6. The operator can move the device to the next work point by using the handle 21 and the casters 20, and use the hydraulic cylinder 25 to adjust the height of the support plate 24 so that it touches the ground and lifts the right-angle moving seat 1 to ensure stable operation of the equipment.

[0035] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Those skilled in the art can readily implement the present invention based on the accompanying drawings and the above description. However, any modifications, alterations, or variations made by those skilled in the art without departing from the scope of the present invention, utilizing the disclosed technical content, are equivalent embodiments of the present invention. Furthermore, any modifications, alterations, or variations made to the above embodiments based on the essential technology of the present invention are still within the protection scope of the present invention.

Claims

1. A device for remediation of heavy metal contaminated soil, characterized in that, Include: Right angle mobile seat (1); Governance tank (2), suspended fixed in the inside of the right angle mobile seat (1), the bottom of the top of the governance tank (2) is fixed respectively and communicated with the medicine box (3) and the blanking pipeline (4), and the side of the governance tank (2) is fixed and communicated with the feeding pipeline (5), which is inclinedly arranged; Mixing assembly, including the stirring shaft (6) rotationally installed in the governance tank (2), the outer surface of the governance tank (2) is fixed with the drive motor (7) for driving the rotation of the stirring shaft (6), the surface of the stirring shaft (6) is fixed with a plurality of crushing knives (8); Intermittent medicine feeding assembly for controlling the intermittent feeding of the medicine in the medicine box (3) into the governance tank (2); Pre-crushing assembly installed in the feeding pipeline (5); Open-close assembly, arranged at one end of the blanking pipeline (4) away from the governance tank (2); Turnover assembly, installed in the governance tank (2).

2. The device for remediation of heavy metal contaminated soil according to claim 1, wherein, The pre-crushing assembly includes a crushing roller (11) rotationally installed in the feeding pipeline (5), a first driven wheel (12) rotationally installed on the outer surface of the feeding pipeline (5), a first driving wheel (13) drivingly connected to the first driven wheel (12) through a first belt (14), and the first driving wheel (13) is rotationally installed on the surface of the governance tank (2) and coaxially connected with the stirring shaft (6).

3. The device for remediation of heavy metal contaminated soil according to claim 1, wherein, The intermittent medicine feeding assembly includes a medicine control roller (15) rotationally installed in the lower port of the medicine box (3), a plurality of medicine storage grooves (16) are formed on the surface of the medicine control roller (15), which are distributed in a circumferential array, a second driven wheel (17) coaxially connected with the medicine control roller (15) is rotationally installed on the outer surface of the medicine box (3), and the second driven wheel (17) is drivingly connected with a second driving wheel (18) through a second belt (19), and the second driving wheel (18) is coaxially fixed with the first driving wheel (13).

4. The device for remediation of heavy metal contaminated soil according to claim 1, wherein, The turnover assembly includes a plurality of turnover plates (10) slidingly fitted to the inner surface of the governance tank (2), and each turnover plate (10) is fixed to the surface of the stirring shaft (6) by two connecting rods (9).

5. The device for remediation of heavy metal contaminated soil according to claim 1, wherein, The open-close assembly includes a right-angle sealing plate (22) slidingly penetrating the side of the right-angle mobile seat (1) and slidingly fitted to the lower port of the blanking pipeline (4), and the right-angle sealing plate (22) and the outer surface of the right-angle mobile seat (1) are jointly connected with a spring (23).

6. The device for remediation of heavy metal contaminated soil according to claim 1, wherein, Four universal wheels (20) are installed on the bottom of the right-angle mobile seat (1), which are respectively arranged at the four corners of the bottom of the right-angle mobile seat (1), and a handle (21) is fixed to the outer side of the right-angle mobile seat (1), a support plate (24) is arranged on the bottom of the right-angle mobile seat (1), and a hydraulic cylinder (25) is fixed to the upper side of the right-angle mobile seat (1) for driving the vertical movement of the support plate (24).

7. The device for remediation of heavy metal contaminated soil according to claim 1, wherein, The top of the medicine box (3) is open and rotationally installed with a sealing cover (26) through a self-locking rotating shaft, and a handle (27) is fixed to the top of the sealing cover (26). 8.The device for soil heavy metal pollution treatment according to claim 1, characterized in that, The bottom of the feeding pipeline (5) is fixed with a connecting frame (28), and the other end of the connecting frame (28) is fixed with the right-angle mobile seat (1).

9. The device for remediation of heavy metal contaminated soil according to claim 1, wherein, The diameter of the first driving wheel (13) is greater than the diameter of the first driven wheel (12), and the diameter of the second driving wheel (18) is smaller than the diameter of the second driven wheel (17).

10. The method for remediation of heavy metal contaminated soil according to any one of claims 1 to 9, wherein, The method comprises the following steps: S1, the soil to be treated is sent into the treatment tank (2) through the feeding pipe (5), in the process, the driving motor (7) is started to drive the stirring shaft (6) to rotate, under the transmission of the first driven wheel (12), the first belt (14) and the first driving wheel (13), the crushing roller (11) rotates, and the pre-crushing process of the soil is started to improve the subsequent treatment efficiency; S2, the driving motor (7) drives the stirring shaft (6), and the crushing knife (8) can further crush the soil; S3, under the transmission of the second driven wheel (17), the second belt (19) and the second driving wheel (18), the medicine control roller (15) rotates, so that the medicine in the medicine box (3) enters the treatment tank (2) through different medicine storage grooves (16) in batches, ensuring that the medicine and the soil are uniformly contacted and reacted; S4, under the driving of the stirring shaft (6), the soil in the treatment tank (2) is constantly stirred by the turnover plate (10), so as to avoid soil deposition and improve the treatment effect; S5, after the treatment is completed, the right-angle sealing plate (22) is pulled outward to open the discharging pipe (4), the treated soil is discharged out of the device, and the spring (23) is automatically reset to ensure the sealing property; S6, the operator can move the device to the next work point through the handle (21) and the universal wheel (20), and adjust the height of the supporting plate (24) by using the hydraulic cylinder (25), so that the right-angle moving seat (1) is lifted to ensure the stable operation of the equipment.

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