Soil remediation leaching equipment for heavy metal polluted area

Abstract

The utility model relates to soil remediation leaching equipment for a heavy metal polluted area, which belongs to the technical field of soil remediation and comprises a frame, and soil digging mechanisms for digging soil in the heavy metal polluted area are arranged on two sides of the frame. The left side of the vehicle frame is provided with repairing and leaching equipment used for repairing soil in the heavy metal pollution area, and the right side of the vehicle frame is provided with dust falling equipment used for falling dust in the soil in the heavy metal pollution area. Compared with ex-situ leaching treatment in the prior art, the soil remediation leaching equipment for the heavy metal contaminated area has the advantages that the treatment cost can be greatly reduced, the problems that ex-situ soil is difficult to transport and large in occupied area are solved, the soil treatment procedures of the heavy metal contaminated area can be effectively reduced, and the soil remediation treatment efficiency of the heavy metal contaminated area is improved; and the advantage of high soil remediation efficiency is achieved.

Description

Technical Field

[0001] This utility model relates to the field of soil remediation technology, specifically to a soil remediation leaching device for areas contaminated with heavy metals. Background Technology

[0002] Heavy metal contaminated soil is characterized by its high degree of concealment, significant harm, long incubation period, and irreversible damage. Heavy metals can accumulate in the food chain and eventually enter the human body, posing a serious threat to human health. Simultaneously, my country faces a shortage of usable land resources, and soil pollution further reduces these resources, severely impacting agricultural production. Furthermore, the long treatment time and irreversible damage of soil pollution seriously affect my country's sustainable economic development. Therefore, the remediation and restoration of soil contaminated with heavy metals is urgently needed.

[0003] Soil leaching has become a highly efficient chemical remediation method for heavy metals in soil due to its simplicity and economy. This technology involves injecting a leaching solution into contaminated soil, causing heavy metals adsorbed and fixed on soil particles to form soluble ions or metal-reagent complexes. The leaching solution is then collected to recover the heavy metals and recycled. This method is effective for treating severe heavy metal pollution and can address heavy metal contamination below the groundwater level that cannot be reached by phytoremediation.

[0004] Chinese utility model patent CN216501501 U discloses a soil leaching device for remediating soil contaminated with heavy metals and inorganic salts. The device includes a base box with a vertical plate fixedly connected to it, a top plate fixedly connected to it, a housing fixedly connected to it, a water pump fixedly connected to the housing, an end cap threadedly connected to the housing, a motor bracket fixedly connected to the top plate, a frame fixedly connected to the vertical plate, a second round shaft fixedly connected to the vertical plate, and a leaching mechanism fixedly connected to the motor bracket. This utility model uses a motor to drive the leaching liquid in a reciprocating motion, achieving rapid leaching of the contaminated soil and enabling fast remediation.

[0005] The aforementioned technologies employ ex-situ treatment to address heavy metal contaminated soil, using transport equipment to move the contaminated soil to the remediation site. Problems with existing technologies include large footprint of the treatment equipment, complex processing procedures, and high costs; they also cannot rapidly perform in-situ soil leaching, severely impacting the efficiency of soil remediation in heavy metal contaminated areas and failing to meet societal needs. Therefore, this paper proposes a soil leaching device for heavy metal contaminated areas to address these issues. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model provides a soil remediation leaching device for heavy metal contaminated areas. It has the advantages of good soil remediation effect and fast soil remediation efficiency, and solves the problem that existing soil remediation leaching devices cannot quickly carry out in-situ leaching treatment of soil, which seriously affects the soil remediation efficiency of heavy metal contaminated areas.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a soil remediation rinsing device for heavy metal contaminated areas, including a frame, with a soil-raking mechanism for raking the soil in the heavy metal contaminated area on both sides of the frame, a remediation rinsing device for remediating the soil in the heavy metal contaminated area on the left side of the frame, and a dust-suppressing device for reducing dust in the soil in the heavy metal contaminated area on the right side of the frame.

[0008] The soil-shaving mechanism includes four soil-shaving wheels rotatably mounted on both sides of the frame, two soil-shaving belts fixedly mounted on the outer surfaces of the two soil-shaving wheels, and multiple soil-shaving teeth fixedly mounted on the outer surfaces of the soil-shaving belts.

[0009] The repair rinsing equipment includes a mixing mechanism located on the top left side of the vehicle frame, a mounting plate fixedly installed on the left side of the vehicle frame, a feeding mechanism located between the mixing mechanism and the mounting plate, four storage pipes fixedly installed on both sides of the bottom of the mounting plate, and six rinsing nozzles fixedly installed at the bottom of the storage pipes.

[0010] The dust suppression equipment includes an adjustable flap rotatably mounted on the right side of the vehicle frame, a water storage pipe fixedly mounted at the bottom of the adjustable flap, multiple dust suppression nozzles fixedly mounted at the bottom of the water storage pipe, a drive mechanism for flipping and adjusting the adjustable flap, and a water supply mechanism for supplying water to the water storage pipe.

[0011] Furthermore, a support shaft extending into the frame is fixedly installed inside the shoveling wheel, and an installation groove adapted to the shoveling teeth is opened inside the shoveling belt.

[0012] Furthermore, a driven wheel is fixedly installed on the outside of the support shaft, and a diesel engine is fixedly installed on the right side of the top of the frame. A belt connects the driven wheel and the drive wheel on the diesel engine.

[0013] Furthermore, the mixing mechanism includes a mixing box fixedly installed on the top left side of the vehicle frame, a stirring motor fixedly installed on the top of the mixing box, a stirring shaft fixedly installed on the output shaft of the stirring motor and extending into the mixing box, and stirring rods fixedly installed on both sides of the stirring shaft.

[0014] Furthermore, the feeding mechanism includes a booster pump fixedly installed on one side of the mixing tank, a suction pipe fixedly connected between the booster pump and the mixing tank, and a delivery pipe fixedly connected between the drug storage pipe and the booster pump.

[0015] Furthermore, the drive mechanism includes two fixed plates fixedly mounted on the right side of the frame, a reduction motor fixedly mounted on the outside of one of the fixed plates, and an adjustment shaft fixedly mounted on the output shaft of the reduction motor and extending through into the interior of the adjustment flap.

[0016] Furthermore, the water supply mechanism includes a water tank fixedly installed on the right side of the top of the vehicle frame, a water pump fixedly installed on the top of the water tank, and a water delivery pipe disposed between the water storage pipe and the water pump.

[0017] Furthermore, a driver's seat is fixedly installed in the middle of the top of the vehicle frame, and a rain cover is fixedly connected to the top of the driver's seat. A control panel is provided on the side of the driver's seat near the diesel engine, and a controller and a display screen are provided on the control panel.

[0018] Compared with the prior art, this utility model provides a soil remediation leaching device for areas contaminated with heavy metals, which has the following beneficial effects:

[0019] 1. This soil remediation leaching equipment for heavy metal contaminated areas can significantly reduce treatment costs compared to existing ex-situ leaching treatment technologies, avoid the problems of difficult soil transportation and large land area requirements, effectively reduce soil treatment procedures in heavy metal contaminated areas, improve soil remediation efficiency, and achieve the advantage of fast soil remediation.

[0020] 2. This soil remediation leaching equipment for heavy metal contaminated areas features a soil-loosening mechanism on both sides of the chassis, facilitating the loosening of soil in these areas. A remediation leaching device on the left side of the chassis allows for thorough and efficient leaching of the loosened soil, improving the utilization rate of the leaching solution, reducing its consumption, and thus lowering treatment costs, resulting in superior soil remediation performance. A dust suppression device on the right side of the chassis effectively prevents dust from impacting the surrounding environment, achieving excellent environmental protection. This solves the problem of existing soil remediation leaching equipment's inability to quickly and in-situ leaching of soil, which severely impacts the efficiency of soil remediation in heavy metal contaminated areas. Attached Figure Description

[0021] Figure 1 This is a three-dimensional view of the structure of this utility model;

[0022] Figure 2 This is a three-dimensional structural view of the mixing mechanism of this utility model;

[0023] Figure 3 This is a three-dimensional structural view of the medicine storage tube and the rinsing nozzle of this utility model;

[0024] Figure 4 This is a schematic diagram of the structure of the water storage pipe and dust suppression nozzle of this utility model.

[0025] In the diagram: 1. Chassis; 2. Soil-scraping mechanism; 21. Soil-scraping wheel; 22. Soil-scraping belt; 23. Soil-scraping teeth; 3. Repair and washing equipment; 31. Mixing mechanism; 32. Feeding mechanism; 33. Mounting plate; 34. Chemical storage pipe; 35. Washing nozzle; 311. Mixing box; 312. Mixing motor; 313. Mixing shaft; 314. Mixing rod; 321. Booster pump; 322. Extraction pipe; 323. Conveying pipe; 4. Dust suppression equipment; 41. Adjusting flap; 42. Water storage pipe; 43. Dust suppression nozzle; 44. Drive mechanism; 45. Water supply mechanism; 441. Gear motor; 442. Adjusting shaft; 443. Fixing plate; 451. Water tank; 452. Water pump; 453. Water conveying pipe; 5. Diesel engine; 6. Belt; 7. Driver's seat. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figures 1 to 4 The soil remediation leaching equipment for heavy metal contaminated areas in this embodiment includes a frame 1. Both sides of the frame 1 are equipped with soil-scraping mechanisms 2 for scraping the soil in the heavy metal contaminated area. A diesel engine 5 is fixedly installed on the right side of the top of the frame 1. The soil-scraping mechanism 2 includes four scraping wheels 21 rotatably mounted on both sides of the frame 1, two scraping belts 22 fixedly mounted on the outer surfaces of the two scraping wheels 21, and multiple scraping teeth 23 fixedly mounted on the outer surfaces of the scraping belts 22.

[0028] In this embodiment, the diesel engine 5 is started to drive the soil-scraping wheel 21 to rotate. The rotation of the soil-scraping wheel 21 drives the soil-scraping belt 22 on its outer surface to rotate. The rotation of the soil-scraping belt 22 drives the soil-scraping teeth 23 to turn the soil in the heavy metal contaminated area, which facilitates the subsequent full and efficient leaching treatment of the soil in the heavy metal contaminated area.

[0029] Specifically, the inside of the shoveling wheel 21 is fixedly installed with a support shaft extending into the frame 1, and the inside of the shoveling belt 22 is provided with an installation groove that matches the shoveling teeth 23.

[0030] Specifically, a driven wheel is fixedly mounted on the outside of the support shaft, and a belt 6 is used to drive the driven wheel and the transmission wheel on the diesel engine 5.

[0031] In this embodiment, a remediation leaching device 3 for remediating soil in heavy metal contaminated areas is installed on the left side of the vehicle frame 1. The remediation leaching device 3 includes a mixing mechanism 31 located on the top left side of the vehicle frame 1, a mounting plate 33 fixedly installed on the left side of the vehicle frame 1, a feeding mechanism 32 located between the mixing mechanism 31 and the mounting plate 33, four storage pipes 34 fixedly installed on both sides of the bottom of the mounting plate 33, and six leaching nozzles 35 fixedly installed at the bottom of the storage pipes 34. By installing the remediation leaching device 3 on the left side of the vehicle frame 1, it is convenient to carry out thorough and efficient leaching treatment on the loosened soil in heavy metal contaminated areas, which helps to improve the utilization rate of the leaching solution, reduce the consumption of the leaching solution, thereby reducing the treatment cost and achieving the advantage of good soil remediation effect.

[0032] Specifically, the mixing mechanism 31 includes a mixing tank 311 fixedly installed on the top left side of the vehicle frame 1, a stirring motor 312 fixedly installed on the top of the mixing tank 311, a stirring shaft 313 fixedly installed on the output shaft of the stirring motor 312 and extending into the mixing tank 311, and stirring rods 314 fixedly installed on both sides of the stirring shaft 313. The stirring motor 312 is started by the driver operating the control panel, which drives the stirring shaft 313 to rotate. The rotation of the stirring shaft 313 drives the stirring rods 314 to rotate, thus mixing the repair agent inside the mixing tank 311. After mixing, a rinsing solution is obtained.

[0033] Specifically, the feeding mechanism 32 includes a booster pump 321 fixedly installed on one side of the mixing tank 311, a suction pipe 322 fixedly connected between the booster pump 321 and the mixing tank 311, and a delivery pipe 323 fixedly connected between the storage pipe 34 and the booster pump 321. The booster pump 321 is controlled by the driver's control panel, and the cooperation between the suction pipe 322 and the delivery pipe 323 facilitates the delivery of the rinsing solution inside the mixing tank 311 to the storage pipe 34 for use.

[0034] It should be noted that the two side spray nozzles 35 are inclined toward the soil-digging mechanism 2, the top of the mixing box 311 is fixedly connected to the feeding pipe, and the back of the mixing box 311 is provided with a sewage outlet.

[0035] In this embodiment, a dust suppression device 4 for reducing dust in soil in areas contaminated with heavy metals is provided on the right side of the vehicle frame 1. The dust suppression device 4 includes an adjustable flap 41 rotatably mounted on the right side of the vehicle frame 1, a water storage pipe 42 fixedly mounted at the bottom of the adjustable flap 41, multiple dust suppression nozzles 43 fixedly mounted at the bottom of the water storage pipe 42, a drive mechanism 44 for adjusting the flap 41, and a water supply mechanism 45 for supplying water to the water storage pipe 42. By providing the dust suppression device 4 on the right side of the vehicle frame 1, it is convenient to perform dust suppression treatment on the soil in areas contaminated with heavy metals, effectively preventing dust from affecting the surrounding environment and achieving the advantage of good environmental protection.

[0036] Specifically, the drive mechanism 44 includes two fixed plates 443 fixedly mounted on the right side of the frame 1, a geared motor 441 fixedly mounted on the outside of one of the fixed plates 443, and an adjusting shaft 442 fixedly mounted on the output shaft of the geared motor 441 and extending through to the inside of the adjusting flap 41. The driver controls the geared motor 441 to work via the control panel, and the operation of the geared motor 441 drives the adjusting flap 41 outside the adjusting shaft 442 to flip, facilitating the adjustment of the dust suppression angle of the dust suppression nozzle 43.

[0037] Specifically, the water supply mechanism 45 includes a water tank 451 fixedly installed on the top right side of the vehicle frame 1, a water pump 452 fixedly installed on the top of the water tank 451, and a water delivery pipe 453 disposed between the water storage pipe 42 and the water pump 452. One end of the water pump 452 is fixedly connected to a suction pipe extending into the water tank 451. The water pump 452 is controlled by the driver operating the control panel, and the cooperation between the suction pipe and the water delivery pipe 453 facilitates the delivery of dust-suppressing water from inside the water tank 451 to the water delivery pipe 453 for use.

[0038] It should be noted that the top of the water tank 451 is provided with a water inlet, the back of the water tank 451 is provided with a drain outlet, and the water supply pipe 453 consists of two sections: a rigid water supply pipe and a flexible water supply pipe. The section near the adjusting flap 41 is the flexible water supply pipe.

[0039] In this embodiment, a driver's seat 7 is fixedly installed in the middle of the top of the frame 1. A rain cover is fixedly connected to the top of the driver's seat 7. A control panel is provided on the side of the driver's seat 7 near the diesel engine 5. A controller and a display screen are provided on the control panel.

[0040] It should be noted that the controllers on the control panel are connected by signal or electrical means to the soil-scraping mechanism 2, the repair and washing equipment 3, and the dust-reducing equipment 4, respectively.

[0041] The working principle of the above embodiments is as follows:

[0042] The driver controls the vehicle frame 1 to move to the designated remediation location via the instrument panel. First, the chemicals and water required for soil remediation in the heavy metal contaminated area are added into the mixing tank 311. Then, the driver controls the stirring motor 312 to start, which drives the stirring shaft 313 to rotate. The rotation of the stirring shaft 313 drives the stirring rod 314 to rotate, mixing the remediation chemicals in the mixing tank 311. After mixing, a leaching solution is obtained. The driver then controls the soil-raking mechanism 2 to loosen the soil in the heavy metal contaminated area via the instrument panel. While the soil-raking mechanism 2 is raking, the driver controls the dust suppression equipment 4 to work, which suppresses dust in front of the vehicle frame 1. At the same time, the driver controls the feeding mechanism 32 to deliver the leaching solution from the mixing tank 311 to the storage pipe 34 via the instrument panel. Then, multiple leaching nozzles 35 leach the loosened soil turned over by the soil-raking mechanism 2 until the soil remediation in the designated heavy metal contaminated area is completed.

[0043] The installation, connection, or setting methods disclosed in this embodiment are all common mechanical methods. Any method that can achieve its beneficial effects can be implemented. In addition, all electrical components mentioned in this article are electrically connected to the main controller and power supply. The main controller is a conventional and known device, and the existing disclosed power connection technology is also common knowledge in the field. Therefore, the specific structural composition and working principle will not be described in detail in this article.

[0044] It should be noted that the orientations or positional relationships indicated herein are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the purpose of facilitating the description of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0045] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0046] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A soil remediation leaching device for heavy metal contaminated areas, comprising a frame (1), characterized in that: Both sides of the vehicle frame (1) are provided with a soil-dredging mechanism (2) for digging soil in areas contaminated with heavy metals. The left side of the vehicle frame (1) is provided with a remediation rinsing device (3) for remediating soil in areas contaminated with heavy metals. The right side of the vehicle frame (1) is provided with a dust suppression device (4) for reducing dust in areas contaminated with heavy metals. The soil-shaving mechanism (2) includes four soil-shaving wheels (21) rotatably mounted on both sides of the frame (1), two soil-shaving belts (22) fixedly mounted on the outer surfaces of the two soil-shaving wheels (21), and multiple soil-shaving teeth (23) fixedly mounted on the outer surfaces of the soil-shaving belts (22). The repair rinsing equipment (3) includes a mixing mechanism (31) located on the top left side of the frame (1), a mounting plate (33) fixedly installed on the left side of the frame (1), a feeding mechanism (32) located between the mixing mechanism (31) and the mounting plate (33), four medicine storage pipes (34) fixedly installed on both sides of the bottom of the mounting plate (33), and six rinsing nozzles (35) fixedly installed at the bottom of the medicine storage pipes (34). The dust suppression device (4) includes an adjustment flap (41) rotatably mounted on the right side of the frame (1), a water storage pipe (42) fixedly mounted on the bottom of the adjustment flap (41), a plurality of dust suppression nozzles (43) fixedly mounted on the bottom of the water storage pipe (42), a drive mechanism (44) for flipping and adjusting the adjustment flap (41), and a water supply mechanism (45) for supplying water to the water storage pipe (42).

2. The soil remediation leaching equipment for heavy metal contaminated areas according to claim 1, characterized in that: The soil-scraping wheel (21) has a support shaft that extends into the frame (1) and the soil-scraping belt (22) has an installation groove that matches the soil-scraping teeth (23).

3. The soil remediation leaching equipment for heavy metal contaminated areas according to claim 2, characterized in that: A driven wheel is fixedly installed on the outside of the support shaft, and a diesel engine (5) is fixedly installed on the right side of the top of the frame (1). A belt (6) is connected between the driven wheel and the drive wheel on the diesel engine (5).

4. The soil remediation leaching equipment for heavy metal contaminated areas according to claim 1, characterized in that: The mixing mechanism (31) includes a mixing box (311) fixedly installed on the top left side of the frame (1), a stirring motor (312) fixedly installed on the top of the mixing box (311), a stirring shaft (313) fixedly installed on the output shaft of the stirring motor (312) and extending into the mixing box (311), and stirring rods (314) fixedly installed on both sides of the stirring shaft (313).

5. The soil remediation leaching equipment for heavy metal contaminated areas according to claim 4, characterized in that: The feeding mechanism (32) includes a booster pump (321) fixedly installed on one side of the mixing tank (311), a suction pipe (322) fixedly connected between the booster pump (321) and the mixing tank (311), and a conveying pipe (323) fixedly connected between the drug storage pipe (34) and the booster pump (321).

6. The soil remediation leaching equipment for heavy metal contaminated areas according to claim 1, characterized in that: The drive mechanism (44) includes two fixed plates (443) fixedly mounted on the right side of the frame (1), a geared motor (441) fixedly mounted on the outside of one of the fixed plates (443), and an adjustment shaft (442) fixedly mounted on the output shaft of the geared motor (441) and extending through into the interior of the adjustment flap (41).

7. The soil remediation leaching equipment for heavy metal contaminated areas according to claim 1, characterized in that: The water supply mechanism (45) includes a water tank (451) fixedly installed on the right side of the top of the frame (1), a water pump (452) fixedly installed on the top of the water tank (451), and a water delivery pipe (453) disposed between the water storage pipe (42) and the water pump (452).

8. The soil remediation leaching equipment for heavy metal contaminated areas according to claim 3, characterized in that: A driver's seat (7) is fixedly installed in the middle of the top of the vehicle frame (1). A rain cover is fixedly connected to the top of the driver's seat (7). A control panel is provided on the side of the driver's seat (7) near the diesel engine (5). A controller and a display screen are provided on the control panel.

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