Heavy metal contaminated soil purification device

Abstract

The utility model relates to the field of soil treatment, in particular to a heavy metal contaminated soil purification device, which comprises a purification tank body, a solution collection box and a medicament tank, a feed opening is fixedly mounted at the lower end of the purification tank body, and a driving motor is fixedly mounted at the upper end of the purification tank body. The output end of the driving motor extends into the purification tank body and is fixedly provided with a transmission shaft, the upper side of the surface of the transmission shaft is fixedly provided with a stirring rod, the lower side of the surface of the transmission shaft is fixedly provided with an anti-blocking blade, the upper end of the solution collection box is provided with a clamping groove, and the solution collection box is internally provided with a filter screen frame. According to the utility model, the filter screen frame is used for blanking and receiving and is matched with the bottom filter screen and the side filter screen for common filtering, so that the filtering performance is improved, waste liquid flows into the solution collecting box, and the filter screen frame is convenient to disassemble and regularly clean and maintain by utilizing an external filtering and separating structure, so that the filtering performance of equipment is ensured; and the solution collecting box is convenient for transferring and treating materials.

Description

Technical Field

[0001] This utility model relates to the field of soil remediation, and in particular to a device for purifying soil contaminated with heavy metals. Background Technology

[0002] Heavy metal contaminated soil refers to soil with a significantly higher content of heavy metal elements than the natural background value, leading to ecological damage and environmental degradation. Heavy metals cannot be decomposed by soil microorganisms and are prone to long-term accumulation in the soil. They can also accumulate in organisms through the food chain. For example, cadmium and mercury have high accumulation coefficients in crops. Heavy metal pollution not only destroys the soil microbial community but also threatens human health through agricultural products. For example, cadmium accumulation causes bone calcium loss, and lead damages the nervous system.

[0003] For example, patent number (CN213591391U) discloses a device for purifying soil contaminated with heavy metals, including a purification box. A feed pipe is connected to the right side of the purification box. A filter plate is fixedly installed inside the purification box. A first motor is fixedly installed on the right side of the purification box. The output shaft of the first motor is fixedly connected to a rotating shaft. The left end of the rotating shaft passes through and extends into the interior of the purification box and is fitted with a spiral blade. A medicine tank is fixedly connected to the left side of the top of the purification box. Measuring cylinders are connected to both sides of the top of the medicine tank. A stirring mechanism is fixedly installed on the left side of the medicine tank. A water pump is fixedly installed on the top of the purification box. A water pump input is connected to a water suction pipe.

[0004] Currently, when heavy metal contaminated soil purification devices are in operation, their filtration structures have certain limitations. Soil far from the mixing structure tends to accumulate and clog the filter screen. Furthermore, the filtration structure is located inside the device, making it inconvenient to disassemble, clean, and maintain, which may affect its subsequent filtration performance and further impact the device's working quality. Utility Model Content

[0005] To overcome the problem that, during operation, soil far from the mixing structure in heavy metal contaminated soil purification devices tends to accumulate and clog the filter screen, and the filter structure is inconvenient to disassemble, clean, and maintain, which may affect its subsequent filtration performance.

[0006] The technical solution of this utility model is as follows: a heavy metal contaminated soil purification device, including a purification tank, a solution collection tank, and a reagent tank. A discharge port is fixedly installed at the lower end of the purification tank, and a drive motor is fixedly installed at the upper end of the purification tank. The output end of the drive motor extends into the interior of the purification tank and is fixedly installed with a transmission shaft. A stirring rod is fixedly installed on the upper side of the transmission shaft surface, and anti-clogging blades are fixedly installed on the lower side of the transmission shaft surface. A locking groove is opened at the upper end of the solution collection tank, and a filter frame is installed inside the solution collection tank. A dosing pipe is fixedly connected to the lower side of the reagent tank surface. A limiting sleeve is fixedly installed on the inner surface of the reagent tank, and a strip-shaped observation window is set inside the limiting sleeve. A spherical float is set inside the limiting sleeve, and a pressure sensor is fixedly installed at the lower end of the limiting sleeve. A connecting through hole is opened on the surface of the limiting sleeve, and an indicator light is fixedly installed at the upper end of the reagent tank.

[0007] Preferably, the anti-clogging blades are located on the upper side of the discharge port, and the electrically controlled valve is located on the lower side of the discharge port, so they do not interfere with each other. When mixing soil and chemicals, the anti-clogging blades can lift the material upwards. When discharging, the drive motor changes direction, causing the anti-clogging blades to rotate in the opposite direction. The rotation of the anti-clogging blades can push the soil out, preventing clogging. The filter screen frame is equipped with a bottom screen plate and a side screen plate, and there is a gap between the filter screen frame and the vertical plate of the solution collection tank, which allows waste liquid to flow out from the side when a large amount of soil is accumulated. The liquid pump can pump the chemical agent that absorbs heavy metals into the purification tank. The drive motor can drive the transmission shaft to rotate, so that the stirring rod mixes and stirs the contaminated soil and chemical agent. The filter screen frame can receive the material, collect the material uniformly, and filter it. The external filter separation structure makes it easy to disassemble the filter screen frame for regular cleaning and maintenance. The spherical float can gradually decrease with the liquid level. The strip observation window allows the staff to know the remaining amount by observing the position of the spherical float from the outside. The spherical float can slide down to press the pressure sensor, which can light up the indicator light to remind the staff to add the chemical agent that absorbs heavy metals in time.

[0008] Preferably, an electrically controlled valve is installed on the lower side of the discharge port, and a feeding port is fixedly installed on the right side of the upper end of the purification tank. The output end of the drive motor is rotatably connected to the purification tank.

[0009] Preferably, the anti-clogging blade is adapted to the upper side of the inner surface of the feed port, and the anti-clogging blade has a spiral structure design.

[0010] Preferably, the solution collection tank is equipped with casters at the bottom, a movable push rod is fixedly installed on the upper right side of the solution collection tank, and a drain port is fixedly installed on the lower right side of the solution collection tank.

[0011] Preferably, the locking groove is locked to the filter frame, and the front and rear sides of the upper end of the filter frame are fixedly installed with disassembly handles.

[0012] Preferably, a liquid pump is installed on the surface of the dosing tube, and the end of the dosing tube away from the solution collection tank is connected to the purification tank. The surface of the spherical float is slidably connected to the limiting sleeve, and the spherical float is in contact with the strip observation window.

[0013] Preferably, the connecting through holes are evenly spaced, the inner diameter of the connecting through holes is smaller than that of the spherical float, the indicator light is equipped with an information processing module, and the indicator light is electrically connected to the pressure sensor.

[0014] The beneficial effects of this utility model are:

[0015] This heavy metal contaminated soil purification device uses a liquid pump to pump the reagent into the purification tank. The drive motor drives the stirring rod to mix the contaminated soil and the reagent. After the soil purification is completed, the electronically controlled valve is opened to transfer the soil downwards. The soil is collected by a filter screen frame and filtered together with the bottom and side filters to improve the filtration performance. The waste liquid flows into the solution collection tank. The external filtration and separation structure makes it easy to disassemble the filter screen frame for regular cleaning and maintenance to ensure the filtration performance of the equipment. The solution collection tank also facilitates the transfer of processed materials.

[0016] The spherical float gradually decreases with the liquid level, and together with the strip-shaped observation window, it allows staff to easily understand the remaining amount by observing the position of the spherical float from the outside. When the reagent tank is low, the spherical float will press down on the pressure sensor and light up the indicator light, reminding staff to absorb the heavy metal reagent in time, which helps to improve the ease of use of the purification device. Attached Figure Description

[0017] Figure 1 The diagram shown is a three-dimensional structural schematic of the heavy metal contaminated soil purification device of this utility model.

[0018] Figure 2 The diagram shown is a three-dimensional structural schematic of the purification tank of this utility model;

[0019] Figure 3 The diagram shown is a three-dimensional structural schematic of the solution collection box of this utility model;

[0020] Figure 4 The diagram shown is a three-dimensional structural schematic of the medicine container of this utility model;

[0021] Figure 5 What is shown is Figure 4 Enlarged 3D structural diagram of point A.

[0022] Explanation of reference numerals in the attached drawings: 1. Purification tank; 2. Solution collection tank; 3. Discharge port; 4. Drive motor; 5. Transmission shaft; 6. Stirring rod; 7. Anti-clogging blade; 8. Engaging groove; 9. Filter screen frame; 10. Chemical tank; 11. Dosing pipe; 12. Limiting sleeve; 13. Strip-shaped observation window; 14. Spherical float; 15. Pressure sensor; 16. Connecting through hole; 17. Electrically controlled valve; 18. Feed port; 19. Drain port; 20. Indicator light. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] Please see Figures 1-5 This utility model provides an embodiment of a heavy metal contaminated soil purification device, including a purification tank 1, a solution collection tank 2, and a reagent tank 10. A discharge port 3 is fixedly installed at the lower end of the purification tank 1, and a drive motor 4 is fixedly installed at the upper end of the purification tank 1. A drive shaft 5 is fixedly installed inside the purification tank 1, extending from the output end of the drive motor 4. A stirring rod 6 is fixedly installed on the upper side of the drive shaft 5, and an anti-clogging blade 7 is fixedly installed on the lower side of the drive shaft 5. A locking groove 8 is provided at the upper end of the solution collection tank 2, and a filter frame 9 is provided inside the solution collection tank 2. A dosing pipe 11 is fixedly connected to the lower side of the reagent tank 10. A limiting sleeve 12 is fixedly installed on the inner surface of the reagent tank 10, and a strip-shaped observation window 13 is provided inside the limiting sleeve 12 on the inner surface of the reagent tank 10. The internal part of the 12 is equipped with a spherical float 14. A pressure sensor 15 is fixedly installed at the lower end of the limiting sleeve 12. A connecting through hole 16 is opened on the surface of the limiting sleeve 12. An indicator light 20 is fixedly installed at the upper end of the reagent tank 10. After purification, the electric control valve 17 is opened to discharge the material. The material is collected by the filter screen 9 and filtered, so that the waste liquid flows into the solution collection tank 2. The external filter separation structure makes it easy to disassemble the filter screen 9 for regular cleaning and maintenance to ensure the filtration performance of the equipment. The spherical float 14 gradually decreases as the liquid level is consumed, allowing the staff to know the remaining amount by observing the position of the spherical float 14 through the strip observation window 13. When the storage is too low, the spherical float 14 will slide down and press the pressure sensor 15 to light up the indicator light 20, reminding the staff to replenish it in time.

[0025] Please see Figures 1-3In this embodiment, an electrically controlled valve 17 is provided on the lower side of the discharge port 3, and a feed port 18 is fixedly installed on the right side of the upper end of the purification tank 1. The output end of the drive motor 4 is rotatably connected to the purification tank 1. The anti-clogging blade 7 is adapted to the upper side of the inner surface of the discharge port 3. The anti-clogging blade 7 has a spiral structure design. A universal wheel is provided at the lower end of the solution collection tank 2. A movable push rod is fixedly installed on the upper side of the right end of the solution collection tank 2. A drain port 19 is fixedly installed on the lower side of the right end of the solution collection tank 2. The locking groove 8 is locked and connected to the filter screen frame 9. Disassembly handles are fixedly installed on both the front and rear sides of the upper end of the filter screen frame 9. Contaminated soil is added through the feed port 18. A liquid pump pumps the heavy metal-absorbing agent into the purification tank 1. The drive motor 4 drives the transmission shaft 5 to rotate, causing the stirring rod 6 to mix the contaminated soil and the agent. At the same time, the anti-clogging blades 7 lift the soil upwards, facilitating the agent's full absorption of the heavy metal components in the contaminated soil. After purification, the electric control valve 17 is opened, and the drive motor 4 drives the anti-clogging blades 7 to rotate in the opposite direction, conveying the soil downwards. The filter screen frame 9 collects the material and filters it, allowing the waste liquid to flow into the solution collection tank 2. The external filter separation structure allows for easy disassembly of the filter screen frame 9 for regular cleaning and maintenance, ensuring the equipment's filtration performance.

[0026] Please see Figures 4-5 In this embodiment, a liquid pump is installed on the surface of the dosing pipe 11. The end of the dosing pipe 11 away from the solution collection tank 2 is connected to the purification tank 1. The surface of the spherical float 14 is slidably connected to the limiting sleeve 12. The spherical float 14 is in close contact with the strip observation window 13. The connecting through holes 16 are evenly distributed. The inner diameter of the connecting through holes 16 is smaller than that of the spherical float 14. An information processing module is installed inside the indicator light 20. The indicator light 20 is electrically connected to the pressure sensor 15. As the medicine inside the medicine tank 10 is gradually consumed, the spherical float 14 gradually decreases with the liquid level. Since the spherical float 14 is close to the strip observation window 13, it is convenient for the staff to know the remaining amount from the outside based on the position of the spherical float 14. When the medicine tank 10 has too little storage, the spherical float 14 slides down and presses the pressure sensor 15, which makes it easy to light the indicator light 20 through the pressure sensor 15, reminding the staff to add medicine to absorb heavy metals in time.

[0027] During operation, contaminated soil is added through the feed inlet 18. A liquid pump then pumps the heavy metal-absorbing agent into the purification tank 1. The drive motor 4 rotates the transmission shaft 5, causing the stirring rod 6 to mix the contaminated soil and agent. Simultaneously, the anti-clogging blades 7 lift the soil upwards, facilitating the agent's full absorption of heavy metals. After purification, the electrically controlled valve 17 is opened, causing the drive motor 4 to rotate the anti-clogging blades 7 in the opposite direction, conveying the soil downwards. The filter frame 9 collects and filters the soil, allowing the waste liquid to flow into the solution collection tank 2. The external filtration and separation structure facilitates the disassembly of the filter screen frame 9 for regular cleaning and maintenance, ensuring the filtration performance of the equipment. As the reagent inside the reagent tank 10 is gradually consumed, the spherical float 14 gradually decreases with the liquid level. Since the spherical float 14 is close to the strip observation window 13, it is convenient for staff to know the remaining amount from the outside based on the position of the spherical float 14. When the reagent tank 10 is low, the spherical float 14 slides down and presses down on the pressure sensor 15, which then illuminates the indicator light 20 to remind staff to add reagent to absorb heavy metals in time.

[0028] After the purification process is completed, the electrically controlled valve 17 is opened to discharge the material. The material is collected and filtered using the filter screen frame 9, allowing the waste liquid to flow into the solution collection tank 2. The external filter separation structure facilitates the disassembly of the filter screen frame 9 for regular cleaning and maintenance, ensuring the filtration performance of the equipment. This addresses the problem that, during operation of the heavy metal contaminated soil purification device, soil far from the mixing structure can easily accumulate and clog the filter screen, and the filter structure is difficult to disassemble and clean, potentially affecting its subsequent filtration performance.

Claims

1. A heavy metal contaminated soil purification device comprising a purification tank body (1), characterized in that: Also include a solution collection tank (2) and medicament tank (10), the lower end of the purification tank body (1) is fixedly installed with a discharge port (3), the upper end of the purification tank body (1) is fixedly installed with a drive motor (4), the output end of the drive motor (4) extends to the inside of the purification tank body (1) and is fixedly installed with a transmission shaft (5), the upper side of the surface of the transmission shaft (5) is fixedly installed with a stirring rod (6), the lower side of the surface of the transmission shaft (5) is fixedly installed with an anti-blocking blade (7), the upper end of the solution collection tank (2) is provided with a clamping groove (8), the inside of the solution collection tank (2) is provided with a filter screen frame (9), the lower side of the surface of the medicament tank (10) is fixedly connected with a dosing pipe (11), the inner surface of the medicament tank (10) is fixedly installed with a limiting sleeve (12), the inside of the limiting sleeve (12) is provided with a strip-shaped observation window (13), the inside of the limiting sleeve (12) is provided with a spherical float (14), the lower end of the inside of the limiting sleeve (12) is fixedly installed with a pressure sensor (15), the surface of the limiting sleeve (12) is provided with a connecting through hole (16), the upper end of the medicament tank (10) is fixedly installed with a prompt light (20).

2. The heavy metal contaminated soil purification apparatus according to claim 1, characterized by: The lower side of the discharge port (3) is provided with an electric control valve (17), the upper end of the right side of the purification tank body (1) is fixedly installed with a feeding port (18), the output end of the drive motor (4) is rotatably connected with the purification tank body (1).

3. The heavy metal contaminated soil purification apparatus according to claim 2, characterized in that: The anti-blocking blade (7) is adapted to the upper side of the inner surface of the discharge port (3), and the anti-blocking blade (7) is designed in a spiral structure.

4. The heavy metal contaminated soil purification apparatus of claim 1, wherein: The lower end of the solution collection tank (2) is provided with a universal wheel, the upper side of the right end of the solution collection tank (2) is fixedly installed with a moving push rod, and the lower side of the right end of the solution collection tank (2) is fixedly installed with a drain port (19).

5. The heavy metal contaminated soil purification apparatus of claim 1, wherein: The clamping groove (8) is clamped and connected with the filter screen frame (9), and the front and rear sides of the upper end of the filter screen frame (9) are both fixedly installed with a dismounting handle.

6. The heavy metal contaminated soil purification apparatus of claim 1, wherein: The surface of the dosing pipe (11) is provided with a liquid pump, the end of the dosing pipe (11) away from the solution collection tank (2) is communicated with the purification tank body (1), the surface of the spherical float (14) is slidably connected with the limiting sleeve (12), and the spherical float (14) is attached to the strip-shaped observation window (13).

7. The heavy metal contaminated soil purification apparatus of claim 6, wherein: The connecting through holes (16) are distributed at equal intervals, the inner diameter of the connecting through holes (16) is smaller than the spherical float (14), the inside of the prompt light (20) is provided with an information processing module, and the prompt light (20) is electrically connected with the pressure sensor (15).

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