Polluted soil chemical treatment device

Abstract

The invention discloses a polluted soil chemical treatment device in the technical field of polluted soil treatment, which comprises a transport vehicle and a hydraulic drilling machine, the hydraulic drilling machine is fixedly connected with a tail compartment of the transport vehicle, and the hydraulic drilling machine comprises an air treatment assembly, an air injection pipeline and a gas absorption assembly; the outer wall of the air injection pipeline is detachably and fixedly connected with the hydraulic drilling machine fixing chuck, the air treatment assembly is detachably communicated with the top end of the air injection pipeline, and the bottom end of the air injection pipeline is fixedly connected with a drill bit injection assembly. The device is flexible and effective, hot air is injected into the soil by combining the soil gas extraction technology and the thermal desorption remediation technology, the desorption treatment efficiency of the high-viscosity or dry soil is improved, meanwhile, the transport vehicle, the hydraulic drilling machine and the treatment device are integrated, and the flexibility and treatment efficiency of soil treatment work in the field are improved.

Description

Technical Field

[0001] The invention belongs to the technical field of contaminated soil treatment, in particular to a contaminated soil chemical treatment device. Background Art

[0002] Contaminated soil treatment is a comprehensive environmental management process that aims to restore the normal function of soil and reduce its negative impact on crops and the environment. It includes a variety of technologies based on biological principles, chemical principles, physical principles and other treatments. Contaminated soil treatment is generally carried out in the field, requiring transportation vehicles to transport treatment equipment, and many treatment technologies that require drilling require hydraulic drilling machines to perform drilling work.

[0003] Among these contaminated soil treatment technologies, soil gas extraction technology is a method of purifying the contaminated soil by arranging extraction wells in the unsaturated soil layer and using a vacuum pump to generate negative pressure to drive air flow through the pores of the contaminated soil, desorbing and treating the polluted exhaust gas on the ground. This technology is highly operational, can treat a wide range of pollutants, does not damage the soil structure, and has potential value for recycling waste. However, due to the strong adsorption of volatile organic compounds by soils with high clay and humus content or extremely dry soils, the removal efficiency of pollutants is very low when using soil gas extraction technology.

[0004] Thermal desorption remediation technology refers to the process of heating the polluted medium and the pollutants it contains to a sufficient temperature through direct or indirect heat exchange to volatilize or separate the pollutants from the polluted medium. The heating temperature is controlled at 200-800℃. During the thermal desorption process, evaporation, distillation, boiling, oxidation and pyrolysis occur. Different pollutants can be selectively removed by adjusting the temperature. This technology can efficiently remove various volatile or semi-volatile organic pollutants in the contaminated site, and the pollutant removal rate can reach more than 99.98%. Soils with poor air permeability or stickiness will affect the treatment effect because they will clump during the treatment process.

[0005] Based on the principles and technical characteristics of the above two technologies, it is necessary to solve the shortcomings of soil gas extraction technology that it is difficult to desorb clay, soil with more humus or relatively dry soil. At the same time, thermal desorption also has a similar desorption effect on soils with poor air permeability and sticky soils. In addition, since soil treatment is often carried out in the field and drilling may be required, it is also very necessary to improve the transportation flexibility of soil treatment equipment. For this reason, it is necessary to propose a contaminated soil chemical treatment device that can combine the advantages of the above two soil treatment technologies, improve the desorption efficiency of volatile organic solvents, and at the same time, on this basis, improve the integration of soil treatment equipment, transport vehicles and hydraulic drilling machines to improve the field transportation flexibility of soil treatment equipment. Summary of the invention

[0006] In order to solve the above problems, the purpose of the present invention is to provide a chemical treatment device for contaminated soil, which injects hot air into the soil by combining soil gas extraction technology and thermal desorption remediation technology, thereby improving the desorption treatment efficiency of highly viscous or drier soils, and at the same time integrating a transport vehicle, a hydraulic drilling machine and a treatment device to improve the flexibility and treatment efficiency of soil treatment work in the field.

[0007] In order to achieve the above-mentioned purpose, the technical scheme of the present invention is as follows: a contaminated soil chemical treatment device, comprising a transport vehicle and a hydraulic drilling machine, the hydraulic drilling machine is fixedly connected to the rear compartment of the transport vehicle, comprises an air treatment component and an air injection pipe, the outer wall of the air injection pipe is detachably fixedly connected to the fixed chuck of the hydraulic drilling machine, the air treatment component is detachably connected to the top end of the air injection pipe, and the bottom end of the air injection pipe is fixedly connected to a drill injection component;

[0008] The drill bit injection assembly includes a base, the outer periphery of the top wall of the base is fixedly connected to the bottom end of the air injection pipe, a servo motor is fixedly connected inside the base, the output shaft of the servo motor is coaxially fixedly connected to the drill bit vertically downward, the outer periphery of the top wall of the drill bit is slidably connected to the outer wall of the base, a plurality of air holes are circumferentially opened on the top wall of the base, the air holes all extend downward and are connected to the air hole axis, a main gear is coaxially fixedly connected to the upper part of the servo motor output shaft, a plurality of sub-gears are horizontally circumferentially meshed with the main gear, the sub-gears are respectively coaxially connected to the air hole axis for rotation, the bottom walls of the sub-gears are eccentrically connected to injection rods for rotation, air guide channels are opened inside the injection rods, air guide cavities are opened inside the sub-gears, the air guide cavities are connected to the air hole axis and the air guide channels, a plurality of injection slots are opened on the outer wall of the base, the injection slots all correspond to the injection rods, the injection rods all pass through the injection slots and are connected to the outside world.

[0009] The principle of the basic solution is: use a transport vehicle and a hydraulic drill to transport the device and drill holes in the soil, compress and heat the air through the air treatment component and inject the hot air deep into the soil through the air injection pipe, so that thermal desorption physical and chemical reactions occur, and the air carrying harmful organic gases escapes from the soil, reducing the degree of soil pollution.

[0010] The beneficial effects of the basic scheme are: 1. The device combines soil gas extraction technology and thermal desorption remediation technology. By injecting hot air into the soil, it can effectively improve the desorption treatment efficiency of highly viscous or drier soils. Hot air can accelerate the volatilization and release of pollutants in the soil, thereby improving the effect of soil remediation.

[0011] 2. The device integrates the transport vehicle, hydraulic drilling machine and processing device into an integrated design, making the entire soil treatment work more flexible in the field environment. This design facilitates the rapid movement and deployment of the equipment to meet the soil remediation needs of different locations. The integrated design not only improves the flexibility of the equipment, but also significantly improves the overall efficiency of soil treatment. The hydraulic drilling machine quickly drills holes, and the air treatment component provides hot air in a timely manner. The whole process is efficient and orderly, reducing processing time and cost.

[0012] 3. The base is the supporting part of the drill bit injection assembly, and its design ensures the stability of the entire assembly during operation. Through a fixed connection with the bottom end of the air injection pipe, the base can effectively transfer and disperse the load during operation, prevent the components from being damaged due to uneven force, and protect the servo motor from being corroded by high-temperature air, thereby extending the life of the equipment. The drill bit is made of high-quality materials, has high strength and wear resistance, and can penetrate the soil efficiently. The sliding connection design between the outer periphery of the top wall and the outer wall of the base ensures the stability and accuracy of the drill bit during the drilling process. The injection rod penetrates the outer wall of the base and connects to the outside world, while the baffle fixedly connected to the lower outer side of the injection slot can prevent soil particles from being brought in during the injection process, thereby avoiding corrosion inside the base and mechanical damage to the soil.

[0013] 4. When the drill injection assembly reaches the predetermined depth and starts to release high-temperature air, the servo motor drives the drill to rotate to break the soil near the drill, preventing the soil from drying and agglomerating under the baking of high-temperature air, which affects the volatilization of harmful organic matter and the penetration of high-temperature air. Hot air or repair gas enters the pore axis through the air distribution hole, passes through the air guide cavity and air guide channel, and is finally injected into the soil by the injection rod. This design also avoids the accumulation and blockage of gas in the injected soil, ensuring the uniform distribution of gas.

[0014] 5. The main gear is coaxially fixedly connected to the upper part of the servo motor output shaft, and the main gear is horizontally meshed with several sub-gears. This design enables the rotation of the main gear to drive multiple sub-gears to rotate simultaneously, thereby realizing the synchronous operation of multiple injection rods. The injection rods are all eccentrically connected to the bottom wall of the sub-gears. This design enables the injection rods to produce a certain stirring effect during the rotation process, which helps to inject hot air or repair gas deeper into the soil and fully contact with soil particles.

[0015] Furthermore, it also includes a gas absorption component, which includes a gas compression pump, a support frame is fixedly connected to the outer wall of the bottom end of the gas compression pump, the bottom end of the gas compression pump is connected to an absorption tube, the end of the absorption tube away from the gas compression pump is connected to a compression bottle, the top of the gas compression pump is connected to a gas collection box, a plurality of inner collection holes are opened on the outer periphery of the gas collection box, the outer periphery of the gas collection box is connected to an extension box, and a plurality of outer collection holes are opened on the outer periphery of the extension box.

[0016] The beneficial effects of the basic solution are: 1. The ingenious combination of the gas collection box and the extension box greatly increases the gas collection area through the setting of the inner collection hole and the outer collection hole. This design allows the harmful organic gas emitted from the soil to be captured more comprehensively, reducing the escape and loss of gas, thereby significantly improving the efficiency of gas collection.

[0017] 2. The overall structure of the gas absorption component is compact and easy to install and disassemble. This feature enables the component to be quickly deployed and moved in field operations to meet the soil remediation needs of different locations. At the same time, the lightness of the component also reduces the burden on operators and improves work efficiency.

[0018] 3. The addition of the gas absorption component makes the entire contaminated soil chemical treatment device more perfect in treating harmful organic gases. It not only improves the effect of gas collection and treatment, but also cooperates with other components to optimize the overall treatment process. This optimization not only improves the treatment efficiency, but also reduces the treatment cost, bringing more economic and social benefits to soil remediation work.

[0019] Furthermore, the air handling component includes a vacuum compression pump and a compression and heating cabin, a compression pipe is connected between the vacuum compression pump and the compression and heating cabin, a plurality of heat exchange plates are fixedly connected to the inner wall of the compression and heating cabin, a ventilation pipe is connected to the compression and heating cabin, an end of the ventilation pipe away from the compression and heating cabin is detachably connected to the top of the air injection pipe, an air valve is connected between the compression and heating cabin and the ventilation pipe, and the vacuum compression pump and the compression and heating cabin are both fixedly connected to the rear compartment of the transport vehicle.

[0020] The beneficial effects of the basic solution are: 1. The vacuum compression pump can suck in the outside air and perform preliminary compression, providing a basis for subsequent heating treatment. The heat exchange plate design in the compression heating chamber can ensure that the air is evenly and efficiently heated when it flows through, thereby meeting the requirements of thermal desorption repair technology for hot air temperature.

[0021] 2. By adjusting the heating elements in the compression heating chamber, the temperature of the hot air can be precisely controlled to meet the treatment requirements of different contaminated soils. The controllability of temperature not only improves the treatment efficiency, but also ensures the stability and safety of the treatment process.

[0022] 3. The various components of the air handling assembly are tightly connected through pipes and connectors to form a highly integrated structure. This compact structural design not only reduces the floor space, but also facilitates the transportation and installation of the equipment.

[0023] 4. By injecting heated air deep into the soil, the air treatment unit can accelerate the volatilization and decomposition of harmful organic matter in the soil. At the same time, the hot air can also promote the increase of gaps between soil particles, which is conducive to the desorption and diffusion of pollutants.

[0024] 5. The air treatment components are fixedly connected to the rear compartment of the transport vehicle to form an integrated treatment system. This design enables the equipment to be quickly deployed and moved in different locations, adapting to the needs of field operations.

[0025] Furthermore, a heat-insulating sleeve is provided on the upper inner wall of the air injection pipe, and a plurality of circumferential air vents are provided on the outer side wall of the bottom end of the air injection pipe near the drill bit injection assembly.

[0026] The beneficial effects of the basic solution are: 1. The insulation sleeve can effectively reduce the heat lost by the air through the pipe wall during the injection process, ensuring that the hot air can still maintain a high temperature when it reaches deep into the soil. This helps to improve the efficiency of thermal desorption remediation technology, because high-temperature air can more effectively promote the volatilization and decomposition of harmful organic matter in the soil.

[0027] 2. The design of circumferential vents allows hot air to be evenly distributed deep in the soil, avoiding local overheating or uneven cooling. This helps to improve the uniformity of the treatment effect and ensure that the soil in the entire treatment area can be effectively repaired.

[0028] 3. Injecting hot air through multiple vents at the same time can accelerate the volatilization and diffusion process of harmful organic matter in the soil. This not only shortens the treatment time, but also improves the treatment efficiency, making the entire treatment process more efficient and faster.

[0029] Furthermore, a protective cover is fixedly connected to the center of the top of the extension box.

[0030] The benefits of the basic solution are: 1. The primary function of the protective cover is to protect the gas collection components located below it, especially the extension box and its sensitive components. In the field working environment, the device may be attacked by natural factors such as wind, rain, sand and dust. The protective cover can effectively block these external invasions and prevent rain, sand and dust from entering the extension box, thereby avoiding affecting the gas collection efficiency and even causing damage to the equipment.

[0031] 2. The design of the protective cover can further optimize the gas collection efficiency. Through reasonable shape and size design, the protective cover can guide the harmful organic gas emitted from the soil to enter the extension box and gas collection box more smoothly. At the same time, the protective cover can also reduce the escape and loss of gas, ensuring that more harmful gases are effectively collected.

[0032] 3. The design of the protective cover can also take into account the need for easy maintenance and cleaning. By designing it to be detachable, the extension box and gas collection box can be cleaned and maintained when necessary. This can not only improve the maintenance efficiency of the equipment, but also reduce maintenance costs.

[0033] Furthermore, a baffle is fixedly connected to the lower outer side of the injection slot.

[0034] The beneficial effect of the basic solution is that the baffle acts as a physical barrier to effectively prevent soil particles from being brought into the base during the hot air injection process. This prevents soil particles from wearing and corroding the mechanical parts inside the base, which contain precision parts such as servo motors and gears. The entry of soil particles may cause blockage, wear or damage to these parts. The design of the baffle effectively protects these precision parts, ensures the normal operation of the equipment, and extends the service life of the equipment.

[0035] Furthermore, a spiral ring block is fixedly connected to the outer wall of the drill bit.

[0036] The beneficial effects of the basic scheme are: 1. When drilling, the spiral drill bit can more effectively resist the resistance of the soil due to its unique spiral ring block, reduce the possibility of deflection and swing, and thus improve the stability of the drilling. This stability helps to ensure the straightness and accuracy of the drill hole, and reduce the problem of soil damage and uneven distribution of repair materials caused by deflection.

[0037] 2. The design of the spiral drill bit can cut and crush the soil more effectively and speed up the drilling speed. At the same time, the spiral ring block can better guide the soil particles to rise along the spiral line, reduce the friction and resistance of the soil on the drill bit, and further improve the drilling efficiency.

[0038] 3. When the servo motor drives the drill bit to rotate, the spiral ring block can make the drill bit better crush the surrounding dry soil, thereby improving the injection efficiency of high-temperature air.

[0039] Furthermore, a plurality of crushing cones are arranged on the outer end surface of the injection rod, and gas injection holes are opened at the concave portions of adjacent crushing cones.

[0040] The benefits of the basic solution are: 1. The design of the crushing cone can cut and crush the soil more effectively, especially when dealing with hard or sticky soil. This design can speed up the speed of the injection rod to process the soil and improve the overall work efficiency.

[0041] 2. The gas injection holes are located in the depressions between the crushing cones. This design ensures that the gas can be more evenly distributed into the soil during the injection process. The number and size of the gas injection holes can be adjusted according to actual needs to meet the needs of different soil treatment scenarios.

[0042] Furthermore, breathable membranes are laid in the ventilation holes and the air injection holes.

[0043] The benefits of the basic solution are: the breathable membrane is breathable and waterproof at the same time, and it can also prevent dust and other impurities from entering the vents and injection holes. Keeping the holes clean and unobstructed helps to extend the service life of the equipment and improve the gas exchange efficiency.

[0044] Furthermore, a transparent film is pressed between the protective cover and the extension box.

[0045] The basic solution has the following beneficial effects: the transparent film is pressed under the protective cover and extends to the surface of the land, which can gather the gas scattered in the soil to the central gas absorption component, improving the absorption efficiency of harmful gases. At the same time, the transparent film can prevent dust, moisture and other impurities from entering the equipment, thereby avoiding short circuits, corrosion and other faults. This protective effect helps to extend the service life of the equipment, improve the stability and reliability of the equipment, and the transparent film can transmit sunlight to avoid affecting the surface vegetation. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 It is an axonometric diagram of the non-working state of the contaminated soil chemical treatment device in an embodiment of the present invention.

[0047] Figure 2 It is an axonometric diagram of the working state of the contaminated soil chemical treatment device in an embodiment of the present invention.

[0048] Figure 3 It is a side cross-sectional view of the drill bit injection assembly of the contaminated soil chemical treatment device in an embodiment of the present invention.

[0049] Figure 4 It is a side cross-sectional view of the injection rod of the contaminated soil chemical treatment device in an embodiment of the present invention.

[0050] Figure 5 It is a side cross-sectional view of a gas absorption component of a contaminated soil chemical treatment device in an embodiment of the present invention.

[0051] The figure marks in the drawings of the specification include: 1. transport vehicle; 2. hydraulic drilling machine; 3. compression pipe; 4. compression heating chamber; 5. ventilation pipe; 6. air injection pipeline; 7. drill bit; 8. vacuum compression pump; 9. spiral ring block; 10. base; 11. breathable membrane; 12. vent; 13. servo motor; 14. air distribution hole; 15. air hole shaft; 16. main gear; 17. distribution gear; 18. injection rod; 19. air guide duct; 20. crushing cone; 21. air injection hole; 22. support frame; 23. gas compression pump; 24. outer collecting hole; 25. extension box; 26. inner collecting hole; 27. gas collecting box; 28. protective cover; 29. ​​transparent film; 30. absorption tube; 31. gas compression bottle; 32. baffle. DETAILED DESCRIPTION

[0052] The following is further described in detail through specific implementation methods:

[0053] Example 1

[0054] Basically as attached Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown: a contaminated soil chemical treatment device, including a transport vehicle 1 and a hydraulic drilling machine 2, the hydraulic drilling machine 2 is fixedly connected to the rear compartment of the transport vehicle 1, and includes an air treatment component and an air injection pipe 6, the outer wall of the air injection pipe 6 is detachably fixedly connected to the fixed chuck of the hydraulic drilling machine 2, the air treatment component is detachably connected to the top end of the air injection pipe 6, and the bottom end of the air injection pipe 6 is fixedly connected to a drill injection component.

[0055] The air handling component includes a vacuum compression pump 8 and a compression and heating cabin 4. A compression pipe 3 is connected between the vacuum compression pump 8 and the compression and heating cabin 4. The heating method of the compression and heating cabin 4 is eddy current heating. A plurality of heat exchange plates are fixedly connected to the inner wall of the compression and heating cabin 4. The heat exchange plates are made of a material containing iron, cobalt and nickel metals. The compression and heating cabin 4 is connected to a ventilation pipe 5. The end of the ventilation pipe 5 away from the compression and heating cabin 4 is detachably connected to the top of the air injection pipe 6. An air valve is connected between the compression and heating cabin 4 and the ventilation pipe 5. The vacuum compression pump and the compression and heating cabin 4 are both fixedly connected to the tail compartment of the transport vehicle 1.

[0056] The upper inner wall of the air injection pipe 6 is covered with an insulation sleeve, which is a section of electric heating duct. The lower end of the air injection pipe 6 is provided with a plurality of circumferential vents 12 on the outer wall near the drill injection assembly. The drill injection assembly comprises a base 10, the outer periphery of the top wall of the base 10 is fixedly connected to the lower end of the air injection pipe 6, a servo motor 13 is fixedly connected inside the base 10, the output shaft of the servo motor 13 is vertically and coaxially fixedly connected to the drill 7, the outer periphery of the top wall of the drill 7 is slidably connected to the outer wall of the base 10, and the outer wall of the drill 7 is fixedly connected to a spiral ring block 9. A plurality of air holes 14 are circumferentially formed on the top wall of the base 10, and the air holes 14 extend downwardly to connect with the air hole 12 axis. A main gear 16 is coaxially fixedly connected to the upper part of the output shaft of the servo motor 13, and a plurality of sub-gears 17 are horizontally meshed with the main gear 16 in the circumferential direction. The sub-gears 17 are coaxially connected to the air hole axis 15, and the bottom walls of the sub-gears 17 are eccentrically connected to the injection rods 18. The injection rods 18 are provided with air guide channels 19, and the sub-gears 17 are provided with air guide cavities. The air guide cavities are connected to the air hole 12 axis and the air guide channel 19. A plurality of injection grooves are opened on the outer wall of the base 10. The injection grooves correspond to the injection rods 18. The injection rods 18 pass through the injection grooves and are connected to the outside. A plurality of crushing cones 20 are arranged on the outer end surface of the injection rod 18. Air injection holes 21 are opened in the depressions of adjacent crushing cones 20. Breathable membranes 11 are laid in the air holes 12 and the air injection holes 21. A baffle 32 is fixedly connected to the lower part of the outer wall of the base 10 where the injection rod 18 passes through.

[0057] The specific implementation process is as follows: when a piece of land that needs to be decontaminated is determined, the equipment and devices are first transported to the site by a transport vehicle 1, and then the air injection pipe 6 is clamped by the chuck of the hydraulic drilling machine 2, and the air injection pipe 6 is drilled into the soil to a predetermined depth. The spiral ring block 9 on the periphery of the drill bit 7 can break the soil layer well and improve the drilling efficiency. At this time, the angle of the servo motor 13 is maintained at a position where all injection rods 18 are retracted into a position close to the outer wall of the base 10, and the baffle 32 can prevent the soil pressure from being too large during drilling, causing the soil to enter the inside of the base 10. Then the air injection pipe 6 is removed from the hydraulic drilling machine 2, the ventilation pipe 5 and the air injection pipe 6 are connected, and the vacuum compression pump 8 and the compression heating chamber 4 are turned on. Generally, the high-temperature air injected into the soil is 200℃-800℃, and the injection air temperature can be adjusted according to the type of polluted organic matter to be removed. The vacuum compression pump 8 compresses the air through the compression pipe 3 and enters the compression heating chamber 4. The compression heating chamber 4 first heats the heat exchange plate containing iron, cobalt and nickel through the eddy current effect, and the heat exchange plate then transfers the heat to the compressed air. The heat exchange plate increases the contact area with the compressed air and improves the heat exchange efficiency. After the compressed air is heated to the preset temperature, the air valve is opened to allow the high-temperature air to enter the air injection pipe 6 through the ventilation pipe 5. The insulation sleeve on the upper inner wall of the air injection pipe 6 is a section of hot air pipe for heating, which is mainly to prevent the high-temperature air from losing temperature after entering the air injection pipe 6. The high-temperature air finally enters the deep ground through the vent holes 12 at the bottom of the air injection pipe 6 and the breathable membrane 11 into the soil gap. Multiple vent holes 12 improve the uniformity of high-temperature air injection. While injecting high-temperature air, the servo motor 13 in the base 10 starts to rotate the main gear 16 and the drill bit 7. The main gear 16 drives the meshing sub-gear 17. The injection rod 18 eccentrically connected to the sub-gear 17 can make linear reciprocating motion in the injection groove on the outer wall of the base 10. The end with the crushing cone 20 is continuously extended to crush the soil dried and agglomerated by the high-temperature air, thereby avoiding a decrease in the efficiency of removing polluted organic matter. At the same time, a part of the high-temperature air enters the air distribution hole 14 and then passes through the air hole shaft 15, the air guide cavity and the air guide channel 19, and finally enters the soil through the air injection hole 21 on the injection rod 18, which greatly improves the injection efficiency and range of high-temperature air, and avoids soil particles and impurities entering the air guide channel 19 and damaging the internal structure of the machine when crushing the soil. The drill bit 7 driven by the servo motor 13 and the spiral ring block 9 on the periphery of the drill bit 7 will continuously crush the soil near the drill bit 7, thereby reducing the adverse effects of soil drying and agglomeration. When high-temperature air is injected deep into the soil, it will evaporate, oxidize and pyrolyze the polluted organic matter, turning it into gas and reaching the surface through the gaps between the soil layers, thereby removing organic pollutants in the soil by physical and chemical means.

[0058] Example 2

[0059] The difference from the above embodiment is that, as shown in the attached Figure 5As shown: it also includes a gas absorption component, the gas absorption component includes a gas compression pump 23, the outer wall of the bottom end of the gas compression pump 23 is fixedly connected to a support frame 22, the bottom end of the gas compression pump 23 is connected to an absorption tube 30, the end of the absorption tube 30 away from the gas compression pump 23 is connected to a gas compression bottle 31, the top of the gas compression pump 23 is connected to a gas collection box 27, the outer periphery of the gas collection box 27 is opened with a plurality of inner collection holes 26, the outer periphery of the gas collection box 27 is connected to an extension box 25, the outer periphery of the extension box 25 is opened with a plurality of outer collection holes 24, the top center of the extension box 25 is fixedly connected to a protective cover 28, and a transparent film 29 is pressed between the protective cover 28 and the extension box 25.

[0060] The specific implementation process is as follows: after the high-temperature air is introduced into the soil and spreads to the surface of the soil layer, the air containing polluted organic gas needs to be collected. A number of gas absorption components are arranged around the transport vehicle 1 with the transport vehicle 1 as the center to cover the spread range of the injected high-temperature air, and the transparent film 29 is covered to the surface of the land. The organic gas will be concentrated around the extension box 25 along with the transparent film 29, and enter the extension box 25 through the outer collection hole 24. After the gas compression pump 23 is turned on, the gas in the extension box 25 is sucked into the gas collection box 27 through the inner collection hole 26 and compressed by the gas compression pump 23, and is passed into the gas compression bottle 31 through the absorption tube 30 for compressed storage. The compressed and stored polluted organic gas can be recycled for secondary processing, and the independent gas storage device can reduce the demand for pipelines connecting the transport vehicle 1 to collect the air duct, reduce costs, and achieve cost reduction and efficiency improvement of gas collection. The transparent film 29 can not only prevent the gas from diffusing into the atmosphere, but also will not block the light and affect the growth of surface vegetation. The function of the protective cover 28 is to suppress the transparent film 29 to prevent the transparent film 29 from deformation. The edge of the transparent film 29 needs to be fixed on the surface.

[0061] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0062] The above is only an embodiment of the present invention. The common sense such as the known specific structure and characteristics in the scheme is not described in detail here. The ordinary technicians in the relevant field know all the common technical knowledge in the technical field of the invention before the application date or priority date, can obtain all the existing technologies in the field, and have the ability to apply the conventional experimental means before that date. The ordinary technicians in the relevant field can improve and implement this scheme in combination with their own abilities under the enlightenment given by this application. Some typical known structures or known methods should not become obstacles for ordinary technicians in the relevant field to implement this application. It should be pointed out that for those skilled in the art, without departing from the structure of the present invention, several deformations and improvements can be made, which should also be regarded as the protection scope of the present invention, which will not affect the effect of the implementation of the present invention and the practicality of the patent. The protection scope required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A contaminated soil chemical treatment device, comprising a transport vehicle (1) and a hydraulic drilling machine (2), wherein the hydraulic drilling machine (2) is fixedly connected to the rear compartment of the transport vehicle (1), and is characterized in that: It comprises an air treatment component and an air injection pipe (6), the outer wall of the air injection pipe (6) is detachably fixedly connected to the fixing chuck of the hydraulic drilling machine (2), the air treatment component is detachably connected to the top end of the air injection pipe (6), and the bottom end of the air injection pipe (6) is fixedly connected to the drill injection component; The drill bit injection assembly comprises a base (10), the outer periphery of the top wall of the base (10) is fixedly connected to the bottom end of the air injection pipe (6), a servo motor (13) is fixedly connected inside the base (10), the output shaft of the servo motor (13) is vertically and coaxially fixedly connected to the drill bit (7), the outer periphery of the top wall of the drill bit (7) is slidably connected to the outer wall of the base (10), a plurality of air distribution holes (14) are circumferentially opened on the top wall of the base (10), the air distribution holes (14) all extend downward to communicate with the air hole shaft (15), and the upper part of the output shaft of the servo motor (13) is coaxially and fixedly connected to the main gear (16) The main gear (16) is horizontally circumferentially meshed with a plurality of sub-gears (17), each of which is coaxially rotatably connected to the air hole shaft (15), and the bottom wall of each sub-gear (17) is eccentrically rotatably connected to an injection rod (18). An air guide channel (19) is provided inside the injection rod (18), and an air guide cavity is provided inside the sub-gear (17). The air guide cavity is connected to the air hole shaft (15) and the air guide channel (19). The outer wall of the base (10) is provided with a plurality of injection grooves, each of which corresponds to the injection rod (18), and the injection rod (18) passes through the injection groove and is connected to the outside.

2. The contaminated soil chemical treatment device according to claim 1, characterized in that: The invention also comprises a gas absorption component, which comprises a gas compression pump (23), the outer wall of the bottom end of the gas compression pump (23) is fixedly connected to a support frame (22), the bottom end of the gas compression pump (23) is connected to an absorption tube (30), one end of the absorption tube (30) away from the gas compression pump (23) is connected to a gas compression bottle (31), the top end of the gas compression pump (23) is connected to a gas collection box (27), the outer periphery of the gas collection box (27) is provided with a plurality of inner collection holes (26), the outer periphery of the gas collection box (27) is connected to an extension box (25), and the outer periphery of the extension box (25) is provided with a plurality of outer collection holes (24).

3. The contaminated soil chemical treatment device according to claim 1, characterized in that: The air treatment component comprises a vacuum compression pump (8) and a compression and heating chamber (4); a compression pipe (3) is connected between the vacuum compression pump (8) and the compression and heating chamber (4); a plurality of heat exchange plates are fixedly connected to the inner wall of the compression and heating chamber (4); a ventilation pipe (5) is connected to the compression and heating chamber (4); an end of the ventilation pipe (5) away from the compression and heating chamber (4) is detachably connected to the top of an air injection pipe (6); an air valve is connected between the compression and heating chamber (4) and the ventilation pipe (5); and the vacuum compression pump and the compression and heating chamber (4) are both fixedly connected to the rear compartment of the transport vehicle (1).

4. The contaminated soil chemical treatment device according to claim 1, characterized in that: The upper inner wall of the air injection pipe (6) is covered with a heat-insulating sleeve, and the outer wall of the bottom end of the air injection pipe (6) close to the drill bit injection assembly is provided with a plurality of circumferential vent holes (12).

5. The contaminated soil chemical treatment device according to claim 1, characterized in that: A protective cover (28) is fixedly connected to the center of the top of the extension box (25).

6. The contaminated soil chemical treatment device according to claim 5, characterized in that: A baffle (32) is fixedly connected to the lower side of the outer side of the injection slot.

7. The contaminated soil chemical treatment device according to claim 6, characterized in that: A spiral ring block (9) is fixedly connected to the outer wall of the drill bit (7).

8. The contaminated soil chemical treatment device according to claim 7, characterized in that: The outer end surface of the injection rod (18) is provided with a plurality of crushing cones (20), and the concave parts of adjacent crushing cones (20) are provided with gas injection holes (21).

9. The contaminated soil chemical treatment device according to claim 8, characterized in that: A breathable membrane (11) is laid inside the vent hole (12) and the air injection hole (21).

10. The contaminated soil chemical treatment device according to claim 2, characterized in that: A transparent film (29) is pressed between the protective cover (28) and the extension box (25).

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