Treatment device for semi-volatile organic compounds in polluted soil

Abstract

The utility model discloses a treatment device for semi-volatile organic compounds in contaminated soil, which comprises a crushing bin, a screening bin and a medicine stirring bin, a first driving motor is arranged at the front end of the crushing bin, a second gear is driven to rotate through a first gear and a chain, so that a rotating shaft and a crushing cutter rotate, and the contaminated soil entering from a feed port is crushed and screened in the screening bin; a second driving motor is arranged at the front end of the medicine stirring bin and drives a stirring auger to rotate, a medicine conveying pipe conveys medicine to a spray head to be evenly sprayed, and a dust cover prevents the spray head from being blocked. By means of the structure, contaminated soil is effectively crushed and screened, it is guaranteed that medicine and the soil are fully mixed, semi-volatile organic compounds are efficiently removed, meanwhile, a maintenance opening facilitates replacement of a dust cover, the equipment maintenance efficiency is improved, and stable operation of the device and the environment protection effect are guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of environmental protection technology, and in particular to a device for treating semi-volatile organic compounds in polluted soil. Background Technology

[0002] Semi-volatile organic compounds (SVCs) include polycyclic aromatic hydrocarbons (PAHs) and organic pesticides. These substances are difficult to degrade in soil, damage soil ecosystems, affect crop growth, and harm human health through the food chain. Traditional methods of treating contaminated soil, such as incineration and chemical leaching, suffer from high energy consumption, secondary pollution, and unstable treatment effects. Incineration produces large amounts of harmful gases, exacerbating air pollution. Improper handling of chemical leaching agents can pollute surrounding water bodies and soil. Furthermore, existing treatment devices struggle to precisely control particle size during soil crushing and screening, leading to insufficient mixing of chemicals with the soil and affecting pollutant removal efficiency. Moreover, equipment maintenance is cumbersome, and component replacement is inconvenient, resulting in reduced operating efficiency and failing to meet the needs of large-scale, efficient contaminated soil treatment. There is an urgent need to develop more efficient, environmentally friendly, and easy-to-maintain contaminated soil treatment devices. Utility Model Content

[0003] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of the present invention, to avoid obscuring the purpose of these documents, and such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0004] Therefore, the purpose of this invention is to provide a device for treating semi-volatile organic compounds in contaminated soil, which can solve the existing problems of soil particle size screening and mixing of drugs with soil.

[0005] To solve the above-mentioned technical problems, this utility model provides a treatment device for semi-volatile organic compounds in contaminated soil, which adopts the following technical solution: it includes a crushing chamber, a first drive motor is fixedly connected to the front end of the crushing chamber, a first gear is fixedly connected to the output end of the first drive motor, a chain is meshed with the outer surface of the first gear, a second gear is meshed with the inner wall of the chain, a screening chamber is fixedly connected to the lower end of the crushing chamber, a drug stirring chamber is fixedly connected to the lower end of the screening chamber, a screening mechanism is provided inside the screening chamber, and a drug stirring mechanism is provided inside the drug stirring chamber;

[0006] The screening mechanism includes a support plate, a vibrator, and a sieve plate;

[0007] The drug stirring mechanism includes a drug delivery pipe, a nozzle, a dust cover, a second drive motor, and a stirring auger.

[0008] Optionally, a rotating shaft is fixedly connected to the inner wall of the second gear, and a crushing blade is provided on the outer surface of the rotating shaft.

[0009] The above technical solution clarifies that the crushing blade rotates by means of the rotation of the second gear, thereby crushing the contaminated soil.

[0010] Optionally, the upper end of the crushing chamber is provided with a feed inlet, and the lower end of the drug mixing chamber is provided with a discharge outlet.

[0011] The above technical solution provides a channel for contaminated soil to enter the device and for treated soil to exit, which is a key part of the material entry and exit process in the entire treatment process.

[0012] Optionally, a maintenance port is provided at the upper end of the drug mixing chamber, and a cover plate is placed at the upper end of the maintenance port.

[0013] The above technical solution facilitates the replacement of the dust cover on the threaded connection at the lower end of the nozzle.

[0014] Optionally, a chute is provided at the rear end of the screening chamber, and the inner wall of the chute is slidably connected to the sieve plate.

[0015] The above technical solution provides a convenient way to install and disassemble the sieve plate, making it easy to clean or replace the sieve plate, while also ensuring that the sieve plate can perform stable screening work during the screening process.

[0016] Optionally, the inner wall of the screening chamber is fixedly connected to the support plate, the screen plate is placed on the upper end of the support plate, and the lower end of the support plate is fixedly connected to the vibrator.

[0017] The above technical solution involves a vibrator that drives a screen plate to vibrate via a support plate, thereby achieving the function of screening the crushed soil.

[0018] Optionally, the front end of the drug stirring chamber is fixedly connected to the second drive motor, and the output end of the second drive motor is fixedly connected to the stirring auger.

[0019] The above technical solution involves a second drive motor that rotates the stirring auger to mix the soil falling into the drug mixing chamber, ensuring that the drug and soil are fully mixed.

[0020] Optionally, the inner wall of the drug mixing chamber is fixedly connected to the drug delivery pipe, the lower end of the drug delivery pipe is fixedly connected to the nozzle, and the lower end of the nozzle is threadedly connected to the dust cover.

[0021] The above technical solution delivers the drug to the nozzle for spraying via a delivery tube, while the dust cover prevents dust or mist generated during the spraying process from clogging the nozzle, ensuring the normal operation of the drug spraying and improving the stability and reliability of the device.

[0022] In summary, this utility model has at least one of the following beneficial effects:

[0023] 1. High-efficiency processing ensures purification effect. The integrated design of crushing, screening and mixing is used. The crushing blade breaks up the contaminated soil, the screening mechanism accurately selects soil with the appropriate particle size, and the mixing auger and nozzles ensure that the medicine and soil are fully mixed, effectively removing semi-volatile organic compounds. The dust cover prevents the spread of pollution and ensures that the treatment process is green and environmentally friendly.

[0024] 2. Convenient maintenance and reduced operating costs: The internal components, including the dust cover, can be easily inspected and replaced through the maintenance port without complicated disassembly, which greatly saves maintenance time and labor costs. At the same time, the compact structural design reduces the footprint, and the flexible installation and use make it suitable for a variety of application scenarios. Attached Figure Description

[0025] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0027] Figure 2 This is a schematic diagram of the crushing mechanism of this utility model;

[0028] Figure 3 This is a schematic diagram of the screening mechanism of this utility model;

[0029] Figure 4 This is a schematic diagram of the drug stirring mechanism of this utility model.

[0030] Explanation of reference numerals in the attached diagram: 1. Crushing chamber; 2. Screening chamber; 3. Drug mixing chamber; 4. Feed inlet; 5. First drive motor; 6. First gear; 7. Second gear; 8. Chain; 9. Rotating shaft; 10. Crushing blade; 11. Slide chute; 12. Screen plate; 13. Support plate; 14. Vibrator; 15. Maintenance port; 16. Cover plate; 17. Drug delivery pipe; 18. Nozzle; 19. Dust cover; 20. Second drive motor; 21. Agitator; 22. Discharge port. Detailed Implementation

[0031] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0032] Reference Figure 1-4 This utility model discloses a device for treating semi-volatile organic compounds in contaminated soil, comprising a crushing chamber 1, a first drive motor 5 fixedly connected to the front end of the crushing chamber 1, a first gear 6 fixedly connected to the output end of the first drive motor 5, a chain 8 meshing with the outer surface of the first gear 6, a second gear 7 meshing with the inner wall of the chain 8, a rotating shaft 9 fixedly connected to the inner wall of the second gear 7, and a crushing blade 10 provided on the outer surface of the rotating shaft 9. A screening chamber 2 is fixedly connected to the lower end of the crushing chamber 1, and a drug stirring chamber 3 is fixedly connected to the lower end of the screening chamber 2. A maintenance port 15 is provided at the upper end of the drug stirring chamber 3, and a cover plate 16 is placed at the upper end of the maintenance port 15. A feed inlet 4 is provided at the upper end of the crushing chamber 1, and a discharge port 22 is provided at the lower end of the drug stirring chamber 3. A screening mechanism is provided inside the screening chamber 2, and a drug stirring mechanism is provided inside the drug stirring chamber 3.

[0033] The screening mechanism includes a support plate 13, a vibrator 14 and a sieve plate 12. A chute 11 is provided at the rear end of the screening chamber 2. The inner wall of the chute 11 is slidably connected to the sieve plate 12. The inner wall of the screening chamber 2 is fixedly connected to the support plate 13. The sieve plate 12 is placed on the upper end of the support plate 13. The lower end of the support plate 13 is fixedly connected to the vibrator 14.

[0034] The drug mixing mechanism includes a drug delivery pipe 17, a nozzle 18, a dust cover 19, a second drive motor 20, and a stirring auger 21. The front end of the drug mixing chamber 3 is fixedly connected to the second drive motor 20, the output end of the second drive motor 20 is fixedly connected to the stirring auger 21, the inner wall of the drug mixing chamber 3 is fixedly connected to the drug delivery pipe 17, the lower end of the drug delivery pipe 17 is fixedly connected to the nozzle 18, and the lower end of the nozzle 18 is threadedly connected to the dust cover 19.

[0035] Working principle: The first drive motor 5 is started, and its output end drives the first gear 6 to rotate. The first gear 6 drives the second gear 7 to rotate through the chain 8. The rotating shaft 9 on the inner wall of the second gear 7 rotates accordingly. The crushing blade 10 on the outer surface of the rotating shaft 9 crushes the contaminated soil entering the crushing chamber 1 from the feed inlet 4, breaking large pieces of soil into smaller particles for subsequent processing. The crushed soil falls into the screening chamber 2. The vibrator 14 is started, driving the support plate 13 and the screen plate 12 placed on it to vibrate. The screen plate 12 screens the crushed soil. Soil particles that meet the particle size requirements fall into the drug mixing chamber 3 below through the screen plate 12, while larger particles remain on the screen plate 12. The larger particles are poured into the feed inlet 4 for re-crushing by pulling out the screen plate 12.

[0036] In the drug mixing chamber 3, the second drive motor 20 starts, and the agitator 21 at its output end begins to rotate, agitating the soil falling into the drug mixing chamber 3. At the same time, the drug for treating semi-volatile organic compounds is transported to the nozzle 18 through the drug delivery pipe 17. The nozzle 18 sprays the drug evenly onto the soil. Under the agitation of the agitator 21, the drug and soil are fully mixed, and a chemical reaction or physical action occurs to remove semi-volatile organic compounds from the soil. The dust cover 19 can prevent dust or mist generated during the drug spraying process from clogging the nozzle 18. The treated soil is discharged through the discharge port 22 at the lower end of the drug mixing chamber 3, completing the entire treatment process.

[0037] When the dust cover 19 becomes worn, damaged, or needs to be replaced after a period of use, the cover 16 of the maintenance port 15 at the top of the drug mixing chamber 3 can be opened. Workers can enter the inside of the drug mixing chamber 3 through the maintenance port 15. Since the dust cover 19 and the nozzle 18 are connected by threads, workers can directly unscrew the old dust cover 19 inside the chamber and install the new dust cover 19. After that, the cover 16 is closed, and the soil treatment work can continue. The dust cover 19 can be replaced through the maintenance port 15 without the need for large-scale disassembly of the entire device. This is convenient and quick, which can effectively improve the maintenance efficiency of the equipment and ensure the normal operation of the device and the protection effect on the environment.

[0038] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be included within the scope of protection of this utility model.

Claims

1. A device for treating semi-volatile organic compounds in contaminated soil, comprising a crushing chamber (1), characterised in that: The front end of the crushing chamber (1) is fixedly connected to a first drive motor (5), the output end of the first drive motor (5) is fixedly connected to a first gear (6), the outer surface of the first gear (6) is meshed with a chain (8), the inner wall of the chain (8) is meshed with a second gear (7), the lower end of the crushing chamber (1) is fixedly connected to a screening chamber (2), the lower end of the screening chamber (2) is fixedly connected to a drug stirring chamber (3), the screening chamber (2) is provided with a screening mechanism, and the drug stirring chamber (3) is provided with a drug stirring mechanism. The screening mechanism includes a support plate (13), a vibrator (14), and a sieve plate (12); The drug stirring mechanism includes a drug delivery pipe (17), a nozzle (18), a dust cover (19), a second drive motor (20), and a stirring auger (21).

2. The apparatus for treating semi-volatile organic compounds in contaminated soil according to claim 1, wherein: The inner wall of the second gear (7) is fixedly connected to a rotating shaft (9), and the outer surface of the rotating shaft (9) is provided with a crushing blade (10).

3. The apparatus for treating semi-volatile organic compounds in contaminated soil according to claim 1, wherein: The upper end of the crushing chamber (1) is provided with a feed inlet (4), and the lower end of the drug mixing chamber (3) is provided with a discharge outlet (22).

4. The apparatus for treating semi-volatile organic compounds in contaminated soil according to claim 1, wherein: The upper end of the drug mixing chamber (3) is provided with a maintenance port (15), and a cover plate (16) is placed on the upper end of the maintenance port (15).

5. The apparatus for treating semi-volatile organic compounds in contaminated soil according to claim 1, wherein: The rear end of the screening chamber (2) is provided with a chute (11), and the inner wall of the chute (11) is slidably connected to the sieve plate (12).

6. The apparatus for treating semi-volatile organic compounds in contaminated soil according to claim 1, wherein: The inner wall of the screening chamber (2) is fixedly connected to the support plate (13), the sieve plate (12) is placed on the upper end of the support plate (13), and the lower end of the support plate (13) is fixedly connected to the vibrator (14).

7. The apparatus for treating semi-volatile organic compounds in contaminated soil according to claim 1, wherein: The front end of the drug stirring chamber (3) is fixedly connected to the second drive motor (20), and the output end of the second drive motor (20) is fixedly connected to the stirring auger (21).

8. The device for treating semi-volatile organic compounds in contaminated soil according to claim 1, characterized in that: The inner wall of the drug mixing chamber (3) is fixedly connected to the drug delivery pipe (17), the lower end of the drug delivery pipe (17) is fixedly connected to the nozzle (18), and the lower end of the nozzle (18) is threadedly connected to the dust cover (19).

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