A soil heavy metal remediation device

Abstract

The utility model belongs to soil remediation technical field discloses a kind of soil heavy metal remediation device.The device is in view of the problem of uneven penetration of repair agent, low processing efficiency in prior art, using belt conveyor embedded design, including main support, vice support, sorting hopper and plough material ware, spraying system and friction type material turning device arranged in turn along the direction of conveyance.Spraying system is evenly sprayed repair agent by multiple spraying pipes and atomizing head;Plough material ware loosens soil layer, and friction type material turning device realizes the sufficient mixing of soil and repair agent by the cooperation of friction roller and rake roller;Inclined screen is provided in sorting hopper, for grading screening repaired soil.The device is also provided with slide plate, tensioning roller, side baffle and canopy, to solve the problems of material sliding, belt relaxation, splashing and agent overflow.The utility model has the advantages of compact structure, simple operation and environmental protection safety, can effectively improve the penetration depth and mixing uniformity of repair agent, thereby reducing the cost of soil remediation.

Description

Technical Field

[0001] This utility model belongs to the field of soil remediation technology, specifically relating to a soil heavy metal remediation device. Background Technology

[0002] Traditional soil remediation technologies generally face problems such as uneven penetration of remediation agents and low treatment efficiency. For example, conventional spraying methods can only act on the surface soil and cannot penetrate into the deeper layers, resulting in unsatisfactory remediation effects; manual preparation methods are prone to uneven mixing of agents, affecting reaction efficiency; in addition, when soil particles are large or clumps, the contact area between the remediation agent and pollutants is limited, further reducing the remediation effect.

[0003] To address the aforementioned issues, existing technologies have proposed a series of improvements. For example, patent number CN202310347747.3 discloses a heavy metal contaminated soil remediation device. This patent uses a vibration mechanism to throw the soil up, combined with indirect spraying technology, to ensure the remediation agent is evenly attached to the airborne dispersed soil particles, thus increasing the agent's penetration depth. Simultaneously, a swinging mechanism is added to expand the spraying range and avoid missing edge areas, and a stirring mechanism optimizes the agent's mixing efficiency. However, this solution has limited functionality in soil crushing and continuous turning, thus affecting the uniform treatment of deep soil layers. Furthermore, patent number CN201911411919.9 discloses a heavy metal contaminated soil remediation device, which employs a strategy combining soil turning and rinsing with a crushing mechanism. It dynamically turns the soil using a shovel component, combined with atomized spraying to achieve multi-angle coverage, while using a crushing roller to break up soil particles to increase the reaction interface. However, its vibration and throwing mechanism is relatively simple, resulting in insufficient airborne dispersion of the soil, which may limit the sufficient contact between the agent and fine particles.

[0004] In summary, although existing technologies have made some progress, there is still room for improvement in enhancing the penetration depth and uniformity of remediation agents. Therefore, designing a simple, low-cost remediation device based on a belt conveyor that can effectively treat deep soil pollution is an urgent need in the industry. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention proposes a soil heavy metal remediation device. This device employs an embedded belt conveyor design, aiming to overcome the limitations of traditional remediation technologies in terms of efficiency, cost, and environmental impact, thus providing a new solution for the treatment of soil heavy metal pollution.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a soil heavy metal remediation device, comprising a main support, a secondary support installed on one side of the main support, a sorting hopper installed on the secondary support, an upper support roller and a lower support roller respectively installed on the main support, a belt passing around the upper support roller, the lower support roller and a drive roller to form a closed loop, the drive roller being driven by a motor to form a belt conveyor, a plow, a spraying system and a friction turner arranged sequentially on the main support along the conveying direction, the material to be treated being transported by the belt conveyor and passing sequentially through the plow and the friction turner for mixing and turning, while the spraying system sprays remediation agent, and then enters the sorting hopper for screening.

[0007] As a further explanation and limitation of the above technical solution, the spraying system includes at least two spray pipes, each spray pipe is mounted on the main support through a support plate, and multiple atomizing heads are provided on each spray pipe. The spray pipes are connected to the feed pipe through a connecting pipe, and the feed pipe is connected to the storage tank through a centrifugal pump.

[0008] As a further supplement to the above technical solution, a chute is provided on the main support. The chute is located between the belt and the sorting hopper and is used to slide the sprayed soil into the sorting hopper.

[0009] As a further explanation and limitation of the above technical solution, the sorting hopper includes a hopper and a screen. The screen is inclinedly arranged inside the hopper. A chute is provided at the opening on one side of the hopper, and a discharge chute is provided at the discharge port at its bottom.

[0010] As a further supplement to the above technical solution, a tension roller is installed on the other side of the hopper via an adjusting bolt. The tension roller is used to adjust the tension of the belt via the adjusting bolt.

[0011] As a further supplement to the above technical solution, the main support is provided with two fixing plates, and each fixing plate is provided with an adjustment hole. A side baffle is installed on the fixing plate by fixing bolts. The adjustment hole is used to adjust the position of the side baffle to prevent soil from splashing out during the turning and mixing process.

[0012] As a further explanation and limitation of the above technical solution, the friction-type material turner is mounted on the main support at both ends by fixed supports. The friction-type material turner is located between two adjacent spray pipes, and it turns and mixes the material to be processed by friction transmission of the belt return section.

[0013] As a further explanation and limitation of the above technical solution, the friction-type material turner includes a housing, bearings, friction rollers, rake rollers and sprockets. The friction rollers and rake rollers are connected by a sprocket drive, and both are rotatably mounted in the housing through bearings. The friction rollers are in contact with the outer surface of the belt return section.

[0014] As a further explanation and limitation of the above technical solution, the plow includes a mounting plate, a connecting rod, and multiple plow heads. The connecting rod is mounted on the main support through two mounting plates, and the multiple plow heads are evenly distributed on the connecting rod.

[0015] As a further supplement to the above technical solution, a canopy is installed on the main support, which covers the spraying system to prevent the sprayed repair agent from splashing out.

[0016] Compared with the prior art, the present invention has the following advantages: 1. This utility model achieves continuous soil conveying through the embedded design of the belt conveyor. Combined with the soil loosening layer by the plow and the mechanical turning by the friction turner, it further improves the uniformity of mixing between the remediation agent and the soil, ensures that heavy metal pollutants and the agent react fully, and enhances the remediation efficiency.

[0017] 2. The spraying system of this utility model adopts a multi-segment spray pipe combined with an atomizing head design. With the cooperation of the plow and the friction turner, it can evenly spray the remediation agent, ensuring that the soil particles are fully moistened, and further enhancing the mixing effect of the soil and the remediation agent.

[0018] 3. This utility model, through the installation of a chute, tension roller, and adjustable side baffles, effectively solves problems such as soil accumulation, belt slack, and material splashing, thus improving the stability and practicality of the device. Furthermore, the canopy design effectively prevents the remedial agent from overflowing, protecting the working environment.

[0019] 4. The sorting hopper of this utility model adopts an inclined screen arrangement, which can realize the particle size classification of the remediated soil, ensuring that qualified soil is discharged and unqualified soil is returned for reprocessing, thereby improving the quality and efficiency of soil treatment. At the same time, the side baffle position can be adjusted according to actual needs to adapt to different processing volumes, and has high flexibility and applicability. Attached Figure Description

[0020] Figure 1 is a schematic diagram of the assembly of the soil heavy metal remediation device in this utility model; Figure 2 is a schematic diagram of the soil heavy metal remediation device of this utility model. Figure 1 ; Figure 3 is a schematic diagram of the soil heavy metal remediation device of this utility model. Figure 2 ; Figure 4 is an exploded structural diagram of the soil heavy metal remediation device of this utility model; Figure 5 is a schematic diagram of the friction-type material turner in this utility model; Figure 6 is a reference diagram for the use of the soil heavy metal remediation device in this utility model.

[0021] The attached figures are labeled as follows: 1. Main support; 2. Secondary support; 3. Sorting hopper; 4. Upper support roller; 5. Lower support roller; 6. Belt; 7. Plow; 8. Friction turner; 9. Support plate; 10. Spray pipe; 11. Atomizing head; 12. Connecting pipe; 13. Feed pipe; 14. Slide; 15. Tensioning roller; 16. Adjusting bolt; 17. Fixing plate; 18. Adjusting hole; 19. Side baffle; 20. Fixing bolt; 21. Fixing support; 22. Canopy.

[0022] The sorting bucket includes: hopper 301, screen 302, chute 303, and discharge chute 304.

[0023] The plow includes: a mounting plate 701, a connecting rod 702, and a plow head 703.

[0024] The friction-type material turner includes: housing 801, bearing 802, friction roller 803, rake roller 804, and sprocket 805. Detailed Implementation

[0025] To further illustrate the technical solution of this utility model, we will further explain this utility model through four embodiments based on the actual implementation situation, with reference to Figures 1 to 6. Example 1

[0026] As shown in Figures 1 to 5, a soil heavy metal remediation device is described. This device is based on an existing belt conveyor design, with the tail end of the main belt conveyor embedded within the device. The specific design is as follows: a main support 1 and a secondary support 2, with the secondary support 2 installed on one side of the main support 1. An upper support roller 4 and a lower support roller 5 are respectively installed on the main support 1. A belt 6 passes over the upper support roller 4, the lower support roller 5, and a drive roller to form a closed loop. The drive roller is driven by a motor to form the belt conveyor. A sorting hopper 3 is installed on the secondary support 2. The sorting hopper 3 includes a hopper 301 and a screen 302. The screen 302 is inclinedly disposed inside the hopper 301. A chute 303 is provided at an opening on one side of the hopper 301, and a discharge chute 304 is provided at its bottom outlet. Along the conveying direction, a plow 7, a spraying system, and a friction turner 8 are arranged sequentially on the main support 1. The spraying system includes at least two spray pipes 10, each of which is mounted on the main support 1 via a support plate 9. Each spray pipe 10 is equipped with multiple atomizing heads 11. The spray pipes 10 are connected to the feed pipe 13 via a connecting pipe 12. The feed pipe 13 is connected to a storage tank via a centrifugal pump. The centrifugal pump delivers the repair liquid from the storage tank to the spray pipes 10, and then sprays it evenly onto the soil on the conveyor belt 6 through the atomizing heads 11. The plow 7 turns the soil over, and the friction turner 8 further mixes it. The repaired soil is screened through a sorting hopper 3. Qualified soil is discharged from the discharge chute 304, and unqualified soil is discharged from the chute 303 to the waste collection area, ensuring efficient and environmentally friendly soil treatment.

[0027] In the above example, the specific structure and installation method of the plow 7 are as follows: it includes a mounting plate 701, a connecting rod 702, and multiple plow heads 703. The connecting rod 702 is mounted on the main support 1 through two mounting plates 701. The multiple plow heads 703 are evenly distributed on the connecting rod 702. During transportation, the soil is turned over by the plow heads 703 and is evenly sprayed with the remediation liquid by the atomizing head 11 of the spraying system, ensuring that the soil is fully mixed and improving the remediation effect.

[0028] In the above example, the friction turner 8 is mounted on the main support 1 at both ends via fixed supports 21, and is located between two adjacent spray pipe sections 10. The specific structure and installation method of the friction turner 8 are as follows: it includes a housing 801, bearings 802, a friction roller 803, a rake roller 804, and a sprocket 805. The friction roller 803 and the rake roller 804 are connected by a sprocket 805, and both are rotatably mounted within the housing 801 via bearings 802. The friction roller 803 contacts the outer surface of the return section of the belt 6 to achieve frictional transmission, and then the rake roller 804 is driven by the sprocket 805 to turn and mix the soil. Example 2

[0029] To address the issues of soil accumulation and poor transfer at the end of the conveyor belt after spraying, as well as belt slack after prolonged operation, as shown in Figures 3 and 4, the following improvements are made based on Example 1: First, a tension roller 15 is installed on the other side of the hopper 301 via adjusting bolts 16. This tension roller 15 is used to adjust the tension of the belt 6 via the adjusting bolts 16. Second, a chute 14 is installed on the main support 1, located between the belt 6 and the sorting hopper 3, to allow the sprayed soil to slide into the sorting hopper 3. In this embodiment, the chute 14 is designed to prevent sticky soil from adhering to the belt surface after spraying, and by adjusting the tension roller 15, the smooth operation of the belt 6 is ensured, preventing soil accumulation. Example 3

[0030] To prevent the remedial agent from overflowing and polluting the environment during spraying, as shown in Figure 6, based on Example 1, we adopt the following improvement: a canopy 22 is installed on the main support 1, which covers the spraying system. Therefore, the canopy 22 is designed to effectively block the diffusion of the atomized remedial agent into the operating area, thus improving the working environment. Example 4

[0031] As shown in Figure 4, to address the issue of soil splashing to both sides during the turning process and to accommodate different processing volumes, we have added an adjustable side baffle design. The main solution is as follows: Two fixed plates 17 are installed on the main support 1, and each fixed plate 17 has an adjustment hole 18. A side baffle 19 is installed on the fixed plate 17 via fixing bolts 20. The adjustment hole 18 is used to adjust the position of the side baffle 19, effectively preventing soil from splashing laterally under the action of the friction turner 8, reducing material loss, and keeping the work area clean.

[0032] Its working principle and operation: The soil to be treated is transported to the remediation area by a belt conveyor. First, the soil layer is loosened by a plow, and then a spraying system evenly sprays liquid remediation agent. Combined with the mechanical turning action of a friction turner, this ensures full contact and reaction between the soil and the remediation agent. The treated soil slides into a sorting hopper via a chute, where it is classified by particle size using an inclined screen. Qualified soil is discharged directly, while unqualified material is returned for reprocessing. Simultaneously, this device employs a canopy to prevent agent spillage, tension rollers to adjust belt stability, and adjustable side baffles to reduce material splashing, ensuring an environmentally friendly and efficient remediation process.

[0033] The foregoing has shown and described the main features and advantages of this utility model. It will be apparent to those skilled in the art that the specific embodiments of this utility model are not limited to the details of the exemplary embodiments described above. Furthermore, without departing from the spirit or basic characteristics of this utility model, the inventive concept and design ideas of this utility model can be implemented in other specific forms, and these should be equivalently included within the protection scope disclosed in the technical solution of this utility model. Therefore, in all respects, the embodiments should be considered exemplary and non-limiting. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included within this utility model.

[0034] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A soil heavy metal remediation device, comprising a main support (1) and a secondary support (2) installed on one side of the main support (1), characterized in that: A sorting hopper (3) is installed on the secondary support (2). An upper support roller (4) and a lower support roller (5) are installed on the main support (1). A belt (6) passes around the upper support roller (4), the lower support roller (5) and the drive roller to form a closed loop. The drive roller is driven by a motor to form a belt conveyor. A plow (7), a spray system and a friction turner (8) are arranged sequentially on the main support (1) along the conveying direction. The material to be processed is transported by the belt conveyor and passes through the plow (7) and the friction turner (8) in sequence for mixing. At the same time, the repair agent is sprayed by the spray system and then enters the sorting hopper (3) for screening.

2. The soil heavy metal remediation device according to claim 1, characterized in that: The spraying system includes at least two spray pipes (10). Each spray pipe (10) is mounted on the main support (1) via a support plate (9). Multiple atomizing heads (11) are provided on each spray pipe (10). The spray pipe (10) is connected to the feed pipe (13) via a connecting pipe (12). The feed pipe (13) is connected to the storage tank via a centrifugal pump.

3. The soil heavy metal remediation device according to claim 1, characterized in that: A chute (14) is provided on the main support (1). The chute (14) is located between the belt (6) and the sorting bucket (3) and is used to slide the sprayed soil into the sorting bucket (3).

4. The soil heavy metal remediation device according to claim 1, characterized in that: The sorting hopper (3) includes a hopper (301) and a screen (302). The screen (302) is inclinedly arranged inside the hopper (301). A chute (303) is provided on one side opening of the hopper (301), and a discharge chute (304) is provided at the bottom discharge port.

5. The soil heavy metal remediation device according to claim 4, characterized in that: A tension roller (15) is installed on the other side of the hopper (301) by means of an adjusting bolt (16). The tension roller (15) is used to adjust the tension of the belt (6) by means of the adjusting bolt (16).

6. The soil heavy metal remediation device according to claim 1, characterized in that: Two fixing plates (17) are provided on the main support (1), and each fixing plate (17) is provided with an adjustment hole (18). A side baffle (19) is installed on the fixing plate (17) by fixing bolts (20). The adjustment hole (18) is used to adjust the position of the side baffle (19) to prevent soil from splashing out during the turning and mixing process.

7. The soil heavy metal remediation device according to claim 2, characterized in that: The friction-type material turner (8) is mounted on the main support (1) at both ends by fixed supports (21). The friction-type material turner (8) is located between two adjacent spray pipes (10), and it turns and mixes the material to be processed by friction transmission of the return section of the belt (6).

8. The soil heavy metal remediation device according to claim 7, characterized in that: The friction-type material turner (8) includes a housing (801), a bearing (802), a friction roller (803), a rake roller (804), and a sprocket (805). The friction roller (803) and the rake roller (804) are connected by a sprocket (805) and are rotatably mounted in the housing (801) via the bearing (802). The friction roller (803) is in contact with the outer surface of the return section of the belt (6).

9. A soil heavy metal remediation device according to any one of claims 1 to 8, characterized in that: The plow (7) includes a mounting plate (701), a connecting rod (702) and a plurality of plow heads (703). The connecting rod (702) is mounted on the main support (1) via two mounting plates (701), and the plurality of plow heads (703) are evenly distributed on the connecting rod (702).

10. A soil heavy metal remediation device according to claim 1, characterized in that: A canopy (22) is installed on the main support (1), which covers the spray system to prevent the sprayed repair agent from splashing out.

Images