Soil pollutant separation and extraction device

Abstract

The utility model relates to the technical field of separation and extraction, and provides a soil pollutant separation and extraction device which comprises a separation box and further comprises a mixing box fixedly connected to the top of the separation box. According to the utility model, the controller controls the motor to start, so that the output shaft of the motor drives the rotating rod and the stirring paddle to rotate, a soil sample and an extracting solution can be fully stirred and mixed, at the moment, the electromagnetic valve I is in a closed state, and after the soil sample and the extracting solution are uniformly mixed, the controller controls the electromagnetic valve I to open; a mixture of a soil sample and an extracting solution flows into the separating box through the communicating pipe and is precipitated in the separating box, so that the soil sample and the extracting solution are uniformly mixed without manually shaking the separating box, the process is time-saving and labor-saving, the mixing effect of the soil sample and the extracting solution is ensured, and the working efficiency is improved. Therefore, the effect of separating and extracting the soil micro-plastics is improved.

Description

A soil pollutant separation and extraction device Technical Field

[0001] This utility model relates to the field of separation and extraction technology, and in particular to a soil pollutant separation and extraction device. Background Technology

[0002] The separation and extraction of soil pollutants is one of the core technologies in environmental science and engineering, aiming to accurately identify and quantify toxic and hazardous substances in soil, providing data support for risk assessment and remediation. With the intensification of industrialization and agricultural activities, soil pollution problems are becoming increasingly serious. Major pollutants include heavy metals (such as lead and cadmium), organic pollutants (polycyclic aromatic hydrocarbons and pesticides), and emerging pollutants (microplastics and antibiotics). These pollutants are persistent, bioaccumulative, and toxic, easily threatening ecosystems and human health through the food chain.

[0003] In the prior art, such as Chinese Patent No. CN220650239U, a device for separating and extracting soil microplastics is described. This device includes a separation box, an agitator fixedly installed inside the separation box, a sedimentation tank inside the separation box, an agitation tank on one side of the sedimentation tank, a material extraction tank on one side of the agitation tank, a drive groove above the agitation tank, an upper end of the agitator fixed inside the drive groove, and a lower end engaged inside the agitation tank. A handle is fixed to the outer wall of the separation box. This invention improves the extraction effect of microplastics through multiple mixing and sedimentation processes. Furthermore, the mixing, sedimentation, and extraction are all completed inside the separation box. The handle allows for easy carrying of the separation box, making it simple in structure, easy to carry, and convenient for direct microplastic extraction during outdoor sampling, thus improving detection efficiency.

[0004] While the above-mentioned scheme has the advantages mentioned above, its disadvantages are as follows: Although it can inject soil samples and extracts into a sedimentation tank, shake and mix them evenly, and then allow sedimentation, tilting the separation tank after sedimentation allows the supernatant to enter the stirring tank through the first inlet, it requires manually shaking the separation tank to ensure that the soil sample and extracts are mixed evenly. This is time-consuming and labor-intensive, making it difficult to guarantee the mixing effect of the soil sample and extracts, resulting in poor separation and extraction of soil microplastics. Furthermore, it requires tilting the separation tank to allow the supernatant to enter the stirring tank through the first inlet. Since the separation tank is tilted at this time, the precipitate is easily shaken, causing some precipitate to mix into the supernatant, thus affecting the quality of soil microplastic separation and extraction. Summary of the Invention

[0005] The purpose of this invention is to solve the problems existing in the technology. Although soil samples and extracts can be injected into a sedimentation tank, shaken and mixed evenly, and then allowed to settle, the supernatant is tilted to allow it to enter the stirring tank through the first inlet after sedimentation. However, this requires manual shaking of the separation tank to ensure even mixing of the soil sample and extract, which is time-consuming and labor-intensive, making it difficult to guarantee the mixing effect of the soil sample and extract, resulting in poor separation and extraction of soil microplastics. Furthermore, the tilting of the separation tank to allow the supernatant to enter the stirring tank through the first inlet causes the precipitate to shake, resulting in some precipitate mixing into the supernatant, thus affecting the quality of soil microplastic separation and extraction.

[0006] To achieve the above objectives, this utility model adopts the following technical solution: a soil pollutant separation and extraction device, comprising: a separation box, and further comprising:

[0007] A mixing chamber is fixedly connected to the top of the separating chamber. A rotating rod is rotatably connected to the opposite side of the inner wall of the mixing chamber. Multiple stirring paddles are fixedly connected at equal intervals on the outer surface of the rotating rod. A motor is fixedly connected to the top of the mixing chamber. The output end of the motor is fixedly connected to one end of the rotating rod. A connecting pipe is fixedly connected to the bottom of the mixing chamber. The connecting pipe is fixedly connected to the separating chamber and extends into the interior of the separating chamber. Two solenoid valves are symmetrically fixedly connected to the inner wall of the connecting pipe.

[0008] Preferably, movable rods are slidably connected to the four corners of the top of the separation box, and one end of each of the movable rods is fixedly connected to a movable plate. The outer surface of the movable plate is slidably and sealed to the inside of the separation box.

[0009] Preferably, the movable plate is slidably connected to the connecting pipe, a sealing sleeve is slidably connected to the outer surface of the connecting pipe, and the sealing sleeve is fixedly connected to the movable plate.

[0010] Preferably, a connecting plate is fixedly connected to the other end of the plurality of movable rods, and a spring is fixedly connected to the outer surface of the movable rod, the spring being fixedly connected to the separation box and the connecting plate respectively.

[0011] Preferably, the top of the separation box has two symmetrically slidingly connected collection pipes, both of which are fixedly connected to a movable plate. A solenoid valve is fixedly connected to the inner wall of the collection pipe near the movable plate, and the collection pipe is connected to the separation box.

[0012] Preferably, a collection frame is fixedly connected to each opposite side of the separation box, and a sealing door is sealed and snapped onto one side of the separation box.

[0013] Preferably, a feed pipe is fixedly connected to the top of the mixing box, the feed pipe is connected to the mixing box, and the mixing box, the connecting pipe and the separating box are connected.

[0014] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0015] 1. This utility model uses a controller to start the motor, causing its output shaft to drive the rotating rod and stirring paddle to rotate, which can fully mix the soil sample and the extract. At this time, the solenoid valve is closed. After the soil sample and the extract are evenly mixed, the controller controls the solenoid valve to open, allowing the mixture of soil sample and extract to flow into the separation chamber through the connecting pipe, where the mixture settles. This eliminates the need to manually shake the separation chamber to mix the soil sample and extract evenly, saving time and effort, ensuring the mixing effect of soil sample and extract, and thus improving the separation and extraction effect of soil microplastics.

[0016] 2. In this invention, by pressing the connecting plate downwards by hand, the movable rod slides downwards, simultaneously compressing the spring and moving the movable plate downwards, gradually approaching the supernatant inside the separation tank. At this time, the controller opens the second solenoid valve. When the movable plate contacts the supernatant, the supernatant enters the collection pipe and is discharged into the collection frame through the collection pipe. Simultaneously, the sealing sleeve slides downwards along the outer surface of the connecting pipe, providing a certain sealing effect. This also drives the collection pipe to slide downwards a suitable distance. When the movable plate contacts the precipitate, the controller closes the second solenoid valve, allowing the sealing door to be opened and the precipitate removed. This prevents the precipitate from entering the supernatant, thereby improving the quality of soil microplastic separation and extraction. Attached Figure Description

[0017] Figure 1 is a side view of a soil pollutant separation and extraction device provided by this utility model.

[0018] Figure 2 is a front view structural schematic diagram of a soil pollutant separation and extraction device provided by this utility model;

[0019] Figure 3 is a cross-sectional structural schematic diagram of a soil pollutant separation and extraction device provided by this utility model;

[0020] Figure 4 is an enlarged structural schematic diagram of point A in Figure 3 of a soil pollutant separation and extraction device provided by this utility model.

[0021] Legend:

[0022] 1. Separation box; 101. Sealing door; 102. Collection frame; 2. Mixing box; 201. Feed pipe; 202. Motor; 203. Rotating rod; 204. Stirring paddle; 205. Connecting pipe; 206. Solenoid valve one; 3. Movable rod; 301. Spring; 302. Connecting plate; 303. Collection pipe; 304. Movable plate; 305. Solenoid valve two; 306. Sealing sleeve. Detailed Implementation

[0023] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0024] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0025] As shown in Figures 1-4, this utility model provides a soil pollutant separation and extraction device, including: a separation box 1, and a mixing box 2, which is fixedly connected to the top of the separation box 1. A rotating rod 203 is rotatably connected to the opposite side of the inner wall of the mixing box 2. Multiple stirring paddles 204 are fixedly connected at equal intervals on the outer surface of the rotating rod 203. A motor 202 is fixedly connected to the top of the mixing box 2. The output end of the motor 202 is fixedly connected to one end of the rotating rod 203. A connecting pipe 205 is fixedly connected to the bottom of the mixing box 2. The connecting pipe 205 is fixedly connected to the separation box 1 and extends into the interior of the separation box 1. Two solenoid valves 206 are symmetrically fixedly connected to the inner wall of the connecting pipe 205.

[0026] Furthermore, as shown in Figures 1-4, movable rods 3 are slidably connected to the four corners of the top of the separation box 1. One end of each movable rod 3 is fixedly connected to a movable plate 304. The outer surface of the movable plate 304 is slidably and sealed inside the separation box 1. With the above arrangement, the movable rods 3 can drive the movable plate 304 to move downward or upward.

[0027] Furthermore, as shown in Figures 1-4, the movable plate 304 is slidably connected to the connecting pipe 205, and a sealing sleeve 306 is slidably connected to the outer surface of the connecting pipe 205. The sealing sleeve 306 is fixedly connected to the movable plate 304, and the sealing sleeve 306 plays a certain sealing role.

[0028] Furthermore, as shown in Figures 1-4, the other end of the multiple movable rods 3 is fixedly connected to a connecting plate 302, and a spring 301 is fixedly connected to the outer surface of the movable rods 3. The spring 301 is fixedly connected to the separation box 1 and the connecting plate 302 respectively. With the above arrangement, when the connecting plate 302 is pressed, the movable rod 3 will slide downward, causing the spring 301 to be compressed. When released, the movable rod 3 and the connecting plate 302 can be reset by the reset force of the spring 301.

[0029] Furthermore, as shown in Figures 1-4, two collection pipes 303 are symmetrically slidably connected to the top of the separation tank 1. Both collection pipes 303 are fixedly connected to the movable plate 304. A solenoid valve 305 is fixedly connected to the inner wall of the collection pipe 303 near the movable plate 304. The collection pipe 303 is connected to the separation tank 1. The arrangement of the collection pipe 303 facilitates the export of the supernatant inside the separation tank 1. The solenoid valve 305 can be closed or opened by controlling the controller, so that the solenoid valve 305 is either disconnected or connected to the separation tank 1.

[0030] Furthermore, as shown in Figures 1-4, a collection frame 102 is fixedly connected to both opposite sides of the separation tank 1, and a sealing door 101 is sealed and engaged on one side of the separation tank 1. The collection frame 102 facilitates the collection of the supernatant, and the sealing door 101 provides a certain sealing effect. When the sealing door 101 is opened, the precipitate inside the separation tank 1 can be removed.

[0031] Furthermore, as shown in Figures 1-4, a feed pipe 201 is fixedly connected to the top of the mixing box 2. The feed pipe 201 is connected to the mixing box 2, and the mixing box 2, the connecting pipe 205 and the separation box 1 are connected. The feed pipe 201 facilitates the injection of soil samples and extracts into the interior of the mixing box 2.

[0032] Working Principle: During use, soil samples and extracts are injected into the mixing chamber 2 through the feed pipe 201. The controller then starts the motor 202, causing its output shaft to drive the rotating rod 203 and stirring paddle 204 to rotate, thoroughly mixing the soil samples and extracts. At this time, the solenoid valve 206 is closed. Once the soil samples and extracts are evenly mixed, the controller opens the solenoid valve 206, allowing the mixture to flow through the connecting pipe 205 into the separation chamber 1, where it settles. This eliminates the need for manual shaking of the separation chamber 1 to ensure even mixing, saving time and effort and ensuring effective mixing of the soil samples and extracts, thus improving the separation and extraction of microplastics from the soil. After the mixture has settled for a period, the solenoid valve 206 closes. Then, by manually pressing down the connecting plate 302, the movable rod 3... Sliding downwards compresses spring 301, causing movable plate 304 to move downwards and gradually approach the supernatant inside separation tank 1. At this time, the controller opens solenoid valve 305. When movable plate 304 contacts the supernatant, the supernatant enters collection pipe 303 and is discharged into collection frame 102. Simultaneously, sealing sleeve 306 slides downwards along the outer surface of connecting pipe 205. The sealing sleeve 306 provides a certain sealing effect and simultaneously drives collection pipe 303 to slide downwards a suitable distance. When movable plate 304 contacts the sediment, the controller closes solenoid valve 305, allowing sealing door 101 to be opened and sediment removed. This prevents sediment from entering the supernatant, thus improving the quality of soil microplastic separation and extraction. When connecting plate 302 is released, movable rod 3, movable plate 304, and collection pipe 303 return to their original positions under the restoring force of spring 301.

[0033] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A soil pollutant separation and extraction device, comprising: The separation box (1) is characterized in that it further includes: a mixing box (2) fixedly connected to the top of the separation box (1), a rotating rod (203) rotatably connected to the opposite side of the inner wall of the mixing box (2), a plurality of stirring paddles (204) fixedly connected at equal intervals on the outer surface of the rotating rod (203), a motor (202) fixedly connected to the top of the mixing box (2), the output end of the motor (202) fixedly connected to one end of the rotating rod (203), a connecting pipe (205) fixedly connected to the bottom of the mixing box (2), the connecting pipe (205) fixedly connected to the separation box (1) and extending into the interior of the separation box (1), and two solenoid valves (206) symmetrically fixedly connected to the inner wall of the connecting pipe (205).

2. The soil pollutant separation and extraction device according to claim 1, characterized in that: Movable rods (3) are slidably connected to the four corners of the top of the separation box (1). One end of each of the multiple movable rods (3) is fixedly connected to a movable plate (304). The outer surface of the movable plate (304) is slidably and sealed inside the separation box (1).

3. The soil pollutant separation and extraction device according to claim 2, characterized in that: The movable plate (304) is slidably connected to the connecting pipe (205), and a sealing sleeve (306) is slidably connected to the outer surface of the connecting pipe (205). The sealing sleeve (306) is fixedly connected to the movable plate (304).

4. The soil pollutant separation and extraction device according to claim 2, characterized in that: A connecting plate (302) is fixedly connected to the other end of each of the multiple movable rods (3), and a spring (301) is fixedly connected to the outer surface of each movable rod (3). The spring (301) is fixedly connected to the separation box (1) and the connecting plate (302) respectively.

5. The soil pollutant separation and extraction device according to claim 4, characterized in that: The top of the separation box (1) has two symmetrically slidingly connected collection pipes (303), both collection pipes (303) are fixedly connected to the movable plate (304), and a solenoid valve (305) is fixedly connected to the inner wall of the collection pipe (303) near the movable plate (304). The collection pipe (303) is connected to the separation box (1).

6. The soil pollutant separation and extraction device according to claim 5, characterized in that: A collection frame (102) is fixedly connected to each side of the separation box (1), and a sealing door (101) is sealed and snapped onto one side of the separation box (1).

7. The soil pollutant separation and extraction device according to claim 1, characterized in that: The top of the mixing tank (2) is fixedly connected to a feed pipe (201), which is connected to the mixing tank (2). The mixing tank (2), the connecting pipe (205), and the separating tank (1) are connected to each other.

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