Compact polluted soil remediation device for enhancing diffusion of chemical eluting agent through microbubbles

Abstract

The invention discloses a compact polluted soil remediation device for micro-bubble enhanced chemical eluting agent diffusion, and relates to the technical field of soil remediation, the compact polluted soil remediation device comprises a base, a mixing bin, a bin cover, a rotating part, a motor, a stirring compaction assembly, a guide part, an iron wire, an iron wire telescopic assembly, a sliding pressing plate, a containing bin and an eluting agent communicating pipe. According to the device, soil in the mixing bin is stirred through the stirring and compacting assembly, so that the soil can be loose and soft, an eluting agent can be conveyed into the rotating part through the eluting agent communicating pipe, the sliding pressing plate moves towards the rotating part, the soil is compressed through the stirring and compacting assembly, the soil becomes tight, and the soil can be recycled. And the iron wire telescopic assembly enables the iron wire to penetrate out of the rotating part, so that the iron wire penetrates into the soil, and a hole is formed in the soil, so that the eluting agent can flow into the hole of the soil through the wire penetrating hole, the eluting agent can extend into the deep part of the soil, the permeation efficiency of the eluting agent is improved, and the soil remediation efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of soil remediation technology, specifically to a device for remediating dense contaminated soil by enhancing the diffusion of chemical leaching agents through microbubbles. Background Technology

[0002] Chemical leaching is a commonly used and efficient technique in soil remediation, particularly suitable for contamination with heavy metals, petroleum hydrocarbons, and polycyclic aromatic hydrocarbons. Pretreated soil and a prepared leaching agent solution are fed into a leaching reaction tank (such as a stirred tank or drum leaching machine) at a specific liquid-to-solid ratio. Full action is ensured through mechanical stirring, tumbling, or agitation to thoroughly mix the soil and leaching agent, guaranteeing that the leaching agent reacts with the contaminants on the surface of soil particles. The reaction time is determined based on preliminary experiments and typically ranges from tens of minutes to several hours.

[0003] Since chemical leaching agents need to penetrate into the soil to remediate it, current remediation equipment mainly relies on stirring to mix the chemical leaching agents and soil. The chemical leaching agents need to penetrate from the soil surface to the interior, which makes the penetration efficiency of the leaching agents into the soil low, resulting in low soil remediation efficiency. Summary of the Invention

[0004] The purpose of this invention is to provide a dense contaminated soil remediation device with microbubble-enhanced chemical leaching agent diffusion to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A microbubble-enhanced chemical leaching agent diffusion-assisted dense contaminated soil remediation device includes: A base and a mixing chamber mounted on the base, wherein one side of the mixing chamber is open and connected to a cover; A rotating part is coaxially rotatably connected to the mixing chamber and driven to rotate by a motor installed on the base. A stirring and compaction assembly is provided around the rotating part. A guide part is fixedly connected to the inner wall of the rotating part. An iron wire is threaded through the guide part. An iron wire telescopic assembly is provided in the inner cavity of the rotating part. The iron wire telescopic assembly is used to allow the iron wire to pass through the rotating part. A wire-passing hole is opened on the outer wall of the rotating part to allow the iron wire to pass freely. The diameter of the wire-passing hole is larger than the wire diameter. A sliding pressure plate is slidably engaged and installed in the inner cavity of the compartment cover, and its end face is provided with a through groove for the rotating part to pass freely. A receiving compartment is coaxially provided on the side of the sliding pressure plate opposite to the rotating part. The inner cavity of the receiving compartment is connected to the through groove, and the receiving compartment is provided with a rinsing agent connecting pipe that slidably extends out of the compartment cover.

[0006] The above technical solution involves placing soil into a mixing chamber. The rotating part drives the mixing and compaction components, which in turn mix the soil within the chamber, making it loose. A leaching agent is then delivered to the rotating part via a connecting pipe. A sliding pressure plate moves towards the rotating part, compressing the soil and making it compact. A wire extension component then passes a wire through the rotating part, penetrating the soil and creating a hole. This allows the leaching agent to flow into the hole, penetrating deeper into the soil and improving its penetration efficiency, thus enhancing the overall efficiency of soil remediation.

[0007] Furthermore, the mixing and compaction assembly includes a fixed baffle coaxially fixedly mounted on one end of the rotating part, and a spiral blade mounted around the periphery of the rotating part. One end of the spiral blade is fixed to the end face of the fixed baffle and slides freely around the periphery of the rotating part. When the spiral blade is subjected to axial force, it will undergo elastic compression deformation. When the sliding pressure plate slides around the periphery of the rotating part, it will exert a squeezing force on the spiral blade in the direction of the fixed baffle, causing the spiral blade to undergo elastic contraction deformation.

[0008] Through the above technical solution, the sliding pressure plate moves towards the rotating part, causing the sliding pressure plate to squeeze the spiral blades, thereby generating extrusion force on the spiral blades. This causes the spiral blades to undergo elastic contraction deformation, which in turn reduces the pitch of the spiral blades. This compacts the soil in the mixing chamber, making the soil dense. Because the pitch of the spiral blades is reduced and the soil is dense, after the wire passes through the rotating part and inserts into the soil, the path of the leaching agent penetrating into the soil through the holes formed by the wire is relatively reduced, thus improving the penetration efficiency of the leaching agent.

[0009] Furthermore, the compartment cover is equipped with a first cylinder, the cylinder rod of the first cylinder penetrates the compartment cover and is driven to connect to a rotating frame, the rotating frame being rotatably fitted around the periphery of the receiving compartment.

[0010] Through the above technical solution, the cylinder rod of the first cylinder extends or shortens, thereby driving the rotating frame to move, which in turn drives the sliding pressure plate and the receiving chamber to move.

[0011] Furthermore, a rotating chamber is coaxially rotatably connected inside the mixing chamber, the spiral blade is placed inside the rotating chamber, and a second cylinder is installed on the wall of the mixing chamber. The cylinder rod of the second cylinder penetrates the mixing chamber and is driven to connect to a clamping block, which is used in conjunction with the rotating chamber.

[0012] With the above technical solution, when the sliding pressure plate is not pressing the spiral blades, the cylinder rod of the second cylinder is in an extended state, causing the clamping block to hold the rotating chamber tightly. As a result, when the spiral blades rotate, they can shear the soil in the rotating chamber to break and mix the soil to a certain extent. When the sliding pressure plate begins to press the spiral blades, the cylinder rod of the second cylinder is in a shortened state, causing the clamping block to disengage from the rotating chamber. At this time, when the spiral blades rotate, they exert a shearing force on the soil, and the soil exerts a frictional force on the inner wall of the rotating chamber. This drives the rotating chamber to rotate passively along with the spiral blades. This makes the spiral blades and the rotating chamber relatively stationary, thereby reducing the pitch of the spiral blades. When the soil is compacted, the soil will not move significantly, thus preventing the wire from bending due to large soil movements during the insertion of the wire into the soil.

[0013] Furthermore, the rotating chamber is rotatably fitted with rolling balls around its periphery, and the inner wall of the mixing chamber is coaxially fixed with an annular rolling frame. The inner surface of the annular rolling frame is provided with an annular rolling groove for the rolling balls to engage and roll freely.

[0014] Through the above technical solution, the rolling ball rolls in the annular rolling groove, which allows the rotating chamber to rotate in the mixing chamber, thereby making the rotating chamber rotatably connected to the mixing chamber.

[0015] Furthermore, the wire telescopic assembly includes a rotating shaft coaxially rotatably connected within the rotating part, with multiple winding portions wrapped around the periphery of the rotating shaft, and the wire correspondingly wound around the periphery of the winding portions. The rotating part is provided with a rotating unit, which is used to drive the rotating part to rotate when the spiral blade is in elastic compression deformation, so that the wire passes through the wire-passing hole and exits the rotating part.

[0016] Through the above technical solution, the rotating unit rotates, allowing the wire to be unwound and wound up on the winding part. When wound up, the wire is wound onto the winding part, causing it to retract into the rotating part. When unwound, the wire passes through the rotating part and penetrates into the soil. Furthermore, the rotation of the winding part maximizes the depth of the wire penetrating into the soil, thereby improving the penetration efficiency of the leaching agent.

[0017] Furthermore, the rotating unit includes a hollow frame fixed to one end of the rotating part near the compartment cover. A sliding cylinder is slidably inserted through the hollow frame. The sliding cylinder has a sliding hole for the rotating shaft to pass through freely. The sliding cylinder and the hollow frame are keyed together. A ball bearing is rotatably embedded in the wall of the sliding hole. A spiral rolling groove is formed around the periphery of the rotating shaft for the ball bearing to engage and roll freely. A pusher is fixed to one end of the sliding cylinder away from the rotating part. The pusher abuts against the inner wall of the receiving compartment.

[0018] With the above technical solution, when the sliding pressure plate moves toward the rotating part, it will cause the inner wall of the receiving chamber to exert a squeezing force on the top frame, causing the top frame to drive the sliding cylinder to move toward the rotating part. When the sliding cylinder moves, the balls will roll in the spiral rolling groove. When rolling, since the sliding cylinder and the hollow frame are connected by a key, the rotating shaft will rotate and drive the winding part to rotate.

[0019] Furthermore, a return spring is wound around the periphery of the sliding cylinder, and the two ends of the return spring elastically abut against the hollow frame and the abutment frame, respectively, in the direction of the spring force.

[0020] Through the above technical solution, the return spring generates an elastic pushing force on the pusher frame, so that when the sliding pressure plate moves away from the rotating part, the elastic potential energy of the return spring is released, and the pusher frame moves away from the rotating part, thereby causing the ball to roll in the reverse direction in the spiral rolling groove, and thus causing the winding part to rotate in the reverse direction, so as to realize the automatic retraction of the wire to the rotating part.

[0021] Furthermore, the winding section is provided with a straightening component, which is used to straighten the wire unwound from the winding section.

[0022] Through the above technical solution, the straightening component can pull and straighten the wire, so that the wire can be as straight as possible after it is unwound from the winding part, so that the wire can be inserted into the soil more smoothly.

[0023] Furthermore, the straightening assembly includes two connecting arms fixed to the guide portion. Each of the two connecting arms on the same guide portion is rotatably connected to a straightening wheel. The two straightening wheels are provided with gear segments around their peripheries, and the gear segments of two adjacent straightening wheels are externally meshed. The winding portion is provided with a transmission gear segment around its periphery, and the transmission gear segment meshes with the gear segment on one of the straightening wheels.

[0024] With the above technical solution, when the rotating shaft rotates, the transmission gear segment on the winding part will mesh with the gear segment on one of the straightening wheels, thereby causing the two straightening wheels to mesh and generate a pulling effect on the wire, so that the wire straightens to the maximum extent after being pulled, and thus the wire can be smoothly inserted into the soil.

[0025] Compared with the prior art, the beneficial effects of the present invention are: 1. In this invention, soil is placed into a mixing chamber. The rotating part rotates, which drives the mixing and compaction component to agitate the soil in the mixing chamber, making the soil soft. The leaching agent is then delivered to the rotating part through the leaching agent inlet pipe. The sliding pressure plate moves towards the rotating part, causing the mixing and compaction component to compress the soil, making it compact. The wire extension component passes the wire out of the rotating part and into the soil, forming a hole in the soil. The leaching agent can then flow into the hole in the soil through the wire hole, allowing it to penetrate deep into the soil and thus improving the penetration efficiency of the leaching agent, thereby enhancing the efficiency of soil remediation. 2. In this invention, when the sliding pressure plate is not pressing the spiral blade, the cylinder rod of the second cylinder is in an extended state, causing the clamping block to hold the rotating chamber tightly. As a result, when the spiral blade rotates, it can shear the soil in the rotating chamber to break and stir the soil to a certain extent. When the sliding pressure plate starts to press the spiral blade, the cylinder rod of the second cylinder is in a shortened state, causing the clamping block to disengage from the rotating chamber. At this time, when the spiral blade rotates, it has a shearing force on the soil, and the soil has a frictional force on the inner wall of the rotating chamber. This can drive the rotating chamber to rotate passively with the rotation of the spiral blade. This makes the spiral blade and the rotating chamber relatively stationary, thereby reducing the pitch of the spiral blade. When the soil is compact, the soil will not move significantly, so that the wire will not bend due to the large movement of the soil when it is inserted into the soil. 3. In this invention, when the sliding pressure plate moves toward the rotating part, it will cause the inner wall of the receiving chamber to exert a squeezing force on the top frame, causing the top frame to drive the sliding cylinder to move toward the rotating part. When the sliding cylinder moves, the balls will roll in the spiral rolling groove. During the rolling, since the sliding cylinder and the hollow frame are connected by a key, the rotating shaft will rotate and drive the winding part to rotate. The rotation of the rotating unit allows the wire to be unwound and wound on the winding part. When wound, the wire will be wound onto the winding part and retracted into the rotating part. When unwound, the wire will pass through the rotating part and penetrate into the soil. Through the rotation of the winding part, the depth of the wire penetrating into the soil can be increased to the maximum extent, so as to improve the penetration efficiency of the leaching agent. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of the dense contaminated soil remediation device for microbubble-enhanced chemical leaching agent diffusion in this invention. Figure 2 for Figure 1 A diagram illustrating the positional relationship from another perspective; Figure 3 This is a schematic diagram showing the positional relationship between the mixing chamber and the chamber cover after assembly in this invention; Figure 4 for Figure 3 A schematic diagram showing the positional relationship of the middle section after it has been cut open; Figure 5 This is a schematic diagram showing the positional relationship of the rotating part, the spiral plate, and the fixed baffle after assembly in this invention. Figure 6 for Figure 5 A diagram illustrating the positional relationship from another perspective; Figure 7 for Figure 6 Schematic diagram of the explosive decomposition of the medium structure; Figure 8 This is a schematic diagram showing the positional relationship of the rotating part, the hollow frame, and the rotating shaft after assembly in this invention. Figure 9 for Figure 8 Enlarged schematic diagram of the local structure at point A; Figure 10 for Figure 8 A diagram illustrating the positional relationship from another perspective; Figure 11 for Figure 10 A schematic diagram of the structural explosion decomposition from another perspective; Figure 12 This is a schematic diagram showing the positional relationship between the sliding cylinder and the top support frame after assembly in this invention.

[0027] The following are explanations of the reference numerals in the figures: 1. Base; 2. Motor; 3. Mixing chamber; 4. Second cylinder; 5. Chamber cover; 6. Rinse agent connection pipe; 7. First cylinder; 8. Rotating frame; 9. Receiving chamber; 10. Sliding pressure plate; 11. Annular rolling frame; 12. Spiral blade; 13. Wire threading hole; 14. Rotating part; 15. Rotating chamber; 16. Fixed baffle; 17. Ball bearing; 18. Clamping block; 19. Rotating shaft; 20. Iron wire; 21. Winding part; 22. Guide part; 23. Hollow frame; 24. Sliding cylinder; 25. Support frame; 26. Return spring; 27. Spiral rolling groove; 28. Transmission gear section; 29. ​​Connecting arm; 30. Straightening wheel; 31. Ball bearing. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] Please see Figures 1-12This invention provides a technical solution: a dense contaminated soil remediation device for microbubble-enhanced chemical leaching agent diffusion, comprising a base 1, a horizontally positioned mixing chamber 3 mounted on the upper surface of the base 1, the mixing chamber 3 having an open side and a hinged cover 5, and an interlocking mechanism (such as a C-clamp, etc., not specifically limited here) mounted on the outer wall of the mixing chamber 3, the interlocking mechanism being used to fix the cover 5 to the mixing chamber 3, so that after the cover 5 closes the opening of the mixing chamber 3, the interlocking mechanism fixes the cover 5, so that the cover 5 remains in a closed state to the opening of the mixing chamber 3, and a motor 2 is mounted on the side of the base 1 away from the open end of the mixing chamber 3, the motor shaft of the motor 2 passing through the closed end of the mixing chamber 3 and driving a rotating part 14, the rotating part 14 being coaxially rotatably connected to the mixing chamber 3 and driven to rotate by the motor 2, the rotating part 14 being hollow inside and also having an open side corresponding to the open end of the mixing chamber 3; A guide part 22 is fixedly connected to the inner cavity of the rotating part 14. A rotating shaft 19 is coaxially rotatably connected inside the rotating part 14. Multiple winding parts 21 are fixedly fitted around the periphery of the rotating shaft 19. The outer diameter of the middle winding part 21 is smaller than that of its two axial ends. An iron wire 20 is wound around the middle periphery of the winding part 21. The wire diameter of the iron wire 20 is not less than 3mm, and the iron wire 20 is preferably made of low carbon steel. This gives the iron wire 20 sufficient mechanical strength and good plastic deformation ability. That is, the iron wire 20 is not easy to bend when inserted into the soil. Of course, the soil... It is also soft, so that the wire 20 will not bend significantly when inserted into the soil. In addition, the wire 20 has plastic deformation capacity, so that the wire 20 can be wound on the winding part 21 when the winding part 21 is winding. The end of the wire 20 that is unwound from the winding part 21 slides through the guide part 22. In addition, the periphery of the rotating part 14 is provided with a wire-passing hole 13 for the wire 20 to pass through freely. The diameter of the wire-passing hole 13 is larger than the wire diameter of the wire 20, so that there is a gap between the wire 20 and the hole wall of the wire-passing hole 13 for the flow of the washing agent. A sliding pressure plate 10 is coaxially and slidably fitted into the inner cavity of the cover 5. The end face of the sliding pressure plate 10 has a through groove for the rotating part 14 to pass freely. A receiving chamber 9 is coaxially formed on the side of the sliding pressure plate 10 opposite to the rotating part 14. The inner cavity of the receiving chamber 9 communicates with the through groove. The receiving chamber 9 has a slidably extending rinsing agent connecting pipe 6 through the cover 5. The rinsing agent connecting pipe 6 is connected to an external microbubble chemical rinsing agent delivery system via a pipeline. A first cylinder 7 is installed on the cover 5. The cylinder rod of the first cylinder 7 penetrates the cover 5 and is driven by a rotating part. The rotating frame 8 is rotatably mounted on the periphery of the receiving chamber 9, allowing the rotating frame 8 to rotate freely on the periphery of the receiving chamber 9. After the chamber cover 5 is closed, the first cylinder 7 is activated, the cylinder rod of the first cylinder 7 extends, and the sliding pressure plate 10 moves toward the rotating part 14, thereby causing the open end of the rotating part 14 to be inserted into the receiving chamber 9. The external microbubble chemical rinsing agent delivery system delivers the chemical rinsing agent to the receiving chamber 9 and into the rotating part 14, and then flows out through the gap between the multiple wire holes 13 and the iron wire 20. A rotating chamber 15 is coaxially rotatably connected within the mixing chamber 3. Specifically, rolling balls 17 are rotatably embedded around the periphery of the rotating chamber 15. An annular rolling frame 11 is coaxially fixed to the inner wall of the mixing chamber 3. The inner surface of the annular rolling frame 11 has an annular rolling groove for the rolling balls 17 to engage and roll freely. The rolling balls 17 roll within the annular rolling groove, thereby causing the rotating chamber 15 to rotate within the mixing chamber 3. A second cylinder 4 is mounted on the wall of the mixing chamber 3. The cylinder rod of the second cylinder 4 penetrates the mixing chamber 3 and is driven by a clamping block 18. The clamping block 18 works in conjunction with the rotating chamber 15. When the cylinder rod of the second cylinder 4 extends, the clamping block 18 clamps the rotating chamber 15. 5. The rotating part 14 is located inside the rotating chamber 15, and a fixed baffle 16 is coaxially and fixedly mounted on one end of the rotating part 14 away from the open side of the mixing chamber 3. The outer diameter of the fixed baffle 16 matches the inner diameter of the rotating chamber 15. A spiral blade 12 is mounted around the rotating part 14. One end of the spiral blade 12 is fixed to the end face of the fixed baffle 16 and slides freely around the rotating part 14. When the spiral blade 12 is subjected to axial force, it will undergo elastic compression deformation. When the sliding pressure plate 10 slides around the rotating part 14, it will exert a squeezing force on the spiral blade 12 in the direction of the fixed baffle 16, causing the spiral blade 12 to undergo elastic contraction deformation, thereby reducing the pitch of the spiral blade 12. A perforated frame 23 is fixedly connected to one end of the rotating part 14 near the cover 5. A sliding cylinder 24 is slidably inserted through the perforated frame 23 on the same axis. The sliding cylinder 24 has a sliding hole for the rotating shaft 19 to pass through freely, and the sliding cylinder 24 is keyed to the perforated frame 23. A ball bearing 31 is rotatably embedded in the wall of the sliding hole. A spiral rolling groove 27 is formed around the periphery of the rotating shaft 19 for the ball bearing 31 to engage and roll freely. A push-up frame 25 is fixedly connected to the end of the sliding cylinder 24 away from the rotating part 14. The push-up frame 25 abuts against the inner wall of the receiving compartment 9. A return spring is wrapped around the periphery of the sliding cylinder 24. 26. The return spring 26 elastically abuts against the hollow frame 23 and the abutment frame 25 at both ends in the direction of its elastic force. When the sliding pressure plate 10 moves toward the rotating part 14, it will cause the inner wall of the receiving chamber 9 to exert a squeezing force on the abutment frame 25, causing the abutment frame 25 to drive the sliding cylinder 24 to move toward the rotating part 14. When the sliding cylinder 24 moves, it will cause the ball 31 to roll in the spiral rolling groove 27. When rolling, since the sliding cylinder 24 and the hollow frame 23 are keyed, the rotating shaft 19 will rotate and drive the winding part 21 to rotate. The guide section 22 is fixedly connected to two connecting arms 29. Each of the two connecting arms 29 on the same guide section 22 is rotatably connected to a straightening wheel 30. The two straightening wheels 30 are provided with gear segments around their periphery, and the gear segments of two adjacent straightening wheels 30 are externally meshed. The winding section 21 is provided with a transmission gear segment 28 around its periphery. The transmission gear segment 28 meshes with the gear segment on one of the straightening wheels 30. When the rotating shaft 19 rotates, the transmission gear segment 28 on the winding section 21 will mesh with the gear segment on one of the straightening wheels 30, thereby causing the two straightening wheels 30 to mesh and generate a pulling effect on the wire 20, so that the wire 20 straightens to the maximum extent after being pulled, thereby allowing the wire 20 to be smoothly inserted into the soil.

[0030] Working principle of the invention: Soil is poured into the rotating chamber 15, and then the chamber cover 5 is closed. The chamber cover 5 seals the rotating chamber 15 and the mixing chamber 3. The first cylinder 7 is activated, and the cylinder rod of the first cylinder 7 extends slightly, causing the rotating frame 8 to move the receiving chamber 9 and causing the end of the rotating part 14 to penetrate into the receiving chamber 9, thereby making the inner cavity of the rotating part 14 and the receiving chamber 9 in a through state. The external microbubble chemical leaching agent delivery system delivers the chemical leaching agent to the receiving chamber 9 and into the rotating part 14. The cylinder rod of the second cylinder 4 extends, causing the clamping block 18 to clamp the rotating chamber 15. Start motor 2, the motor shaft of motor 2 rotates and drives the rotating part 14 to rotate. When the rotating part 14 rotates, it drives the spiral blade 12 to rotate synchronously, thereby making the spiral blade 12 stir the soil in the rotating chamber 15. Through the shearing force on the soil, the soil is crushed and stirred. After stirring for a period of time, the soil becomes as loose as possible. Then start the second cylinder 4. The cylinder rod of the second cylinder 4 shortens, so that the clamping block 18 is released from the clamping state of the rotating chamber 15. At this time, the rotating chamber 15 can rotate freely in the mixing chamber 3. When the first cylinder 7 is restarted, the cylinder rod of the first cylinder 7 continues to extend, which causes the receiving chamber 9 to move the sliding pressure plate 10. This causes the sliding pressure plate 10 to squeeze the spiral blade 12. When the spiral blade 12 is subjected to the squeezing force of the sliding pressure plate 10, it will elastically contract and deform, which reduces the pitch of the spiral blade 12 and makes the soil compact. When the sliding pressure plate 10 moves toward the rotating part 14, it will cause the inner wall of the receiving chamber 9 to generate squeezing force with the top support frame 25, which will cause the top support frame 25 to drive the sliding cylinder 24 to move toward the rotating part 14. When the sliding cylinder 24 moves, it causes the ball bearings 31 to roll within the spiral rolling groove 27. During this rolling motion, because the sliding cylinder 24 and the hollow frame 23 are keyed together, the rotating shaft 19 rotates, causing the winding section 21 to rotate and begin unwinding the wire 20. Furthermore, as the rotating shaft 19 rotates, the transmission gear segment 28 on the winding section 21 meshes with the gear segment on one of the straightening wheels 30, resulting in the two straightening wheels 30 meshing and pulling the wire 20. This causes the wire 20 to straighten to its maximum extent under tension, allowing it to smoothly insert into the soil and form a hole. Additionally, because the rotating chamber 15 is in a free-rotating state, there is friction between the soil and the wall of the rotating chamber 15. The force causes the rotating chamber 15 to rotate passively along with the spiral blade 12. Therefore, the wire 20 will not bend significantly during the process of penetrating the soil. The leaching agent will flow into the hole through the gap between the wire 20 and the wall of the wire-piercing hole 13, thus quickly penetrating deep into the soil. After penetration, the sliding pressure plate 10 rotates in the opposite direction, causing the wire 20 to retract into the rotating part 14. Then, the cylinder rod of the second cylinder 4 extends, fixing the rotating chamber 15 and rotating the spiral blade 12. This causes the soil that has been penetrated by the leaching agent to be stirred again by the spiral blade 12, allowing the leaching agent to spread to other parts of the soil. In addition, by repeating the above process periodically or irregularly, the wire 20 can be pierced in multiple places in the soil, allowing the leaching agent to quickly penetrate into the soil and improving the penetration efficiency.

[0031] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for remediating dense contaminated soil using microbubbles to enhance the diffusion of chemical leaching agents, characterized in that, include: The base (1) and the mixing chamber (3) installed on the base (1) have an open side and are connected to a cover (5). The rotating part (14) is coaxially rotatably connected to the mixing chamber (3) and driven to rotate by the motor (2) installed on the base (1). The rotating part (14) is provided with a stirring and compaction assembly around its periphery. The inner wall of the rotating part (14) is fixedly connected with a guide part (22). A wire (20) is threaded through the guide part (22). The inner cavity of the rotating part (14) is provided with a wire telescopic assembly. The wire telescopic assembly is used to allow the wire (20) to pass through the rotating part (14). The outer wall of the rotating part (14) is provided with a wire-passing hole (13) for the wire (20) to pass through freely. The diameter of the wire-passing hole (13) is larger than the wire diameter of the wire (20). A sliding pressure plate (10) is slidably engaged in the inner cavity of the cover (5), and its end face is provided with a through groove for the rotating part (14) to pass freely. A receiving chamber (9) is coaxially provided on the side of the sliding pressure plate (10) opposite to the rotating part (14). The inner cavity of the receiving chamber (9) is connected to the through groove. The receiving chamber (9) is provided with a rinsing agent connecting pipe (6) that slides out of the cover (5).

2. The dense contaminated soil remediation device with microbubble-enhanced chemical leaching agent diffusion according to claim 1, characterized in that, The mixing and compaction assembly includes a fixed baffle (16) coaxially fixedly mounted on one end of the rotating part (14). A spiral blade (12) is mounted around the periphery of the rotating part (14). One end of the spiral blade (12) is fixed to the end face of the fixed baffle (16) and slides freely around the periphery of the rotating part (14). When the spiral blade (12) is subjected to axial force, it will undergo elastic compression deformation. When the sliding pressure plate (10) slides around the periphery of the rotating part (14), it will exert a squeezing force on the spiral blade (12) in the direction of the fixed baffle (16), causing the spiral blade (12) to undergo elastic contraction deformation.

3. The dense contaminated soil remediation device with microbubble-enhanced chemical leaching agent diffusion according to claim 2, characterized in that, The compartment cover (5) is equipped with a first cylinder (7), the cylinder rod of the first cylinder (7) penetrates the compartment cover (5) and is driven to connect to a rotating frame (8), the rotating frame (8) is rotatably fitted around the periphery of the receiving compartment (9).

4. The dense contaminated soil remediation device with microbubble-enhanced chemical leaching agent diffusion according to claim 2, characterized in that, The mixing chamber (3) is coaxially rotatably connected to a rotating chamber (15). The spiral blade (12) is placed inside the rotating chamber (15). A second cylinder (4) is installed on the wall of the mixing chamber (3). The cylinder rod of the second cylinder (4) penetrates the mixing chamber (3) and is driven to connect to a clamping block (18). The clamping block (18) is used in conjunction with the rotating chamber (15).

5. The dense contaminated soil remediation device with microbubble-enhanced chemical leaching agent diffusion according to claim 3, characterized in that, The rotating chamber (15) is rotatably fitted with rolling balls (17) around its periphery. The inner wall of the mixing chamber (3) is coaxially fixed with an annular rolling frame (11). The inner annular surface of the annular rolling frame (11) is provided with an annular rolling groove for the rolling balls (17) to engage and roll freely.

6. The dense contaminated soil remediation device with microbubble-enhanced chemical leaching agent diffusion according to claim 1, characterized in that, The wire telescopic assembly includes a rotating shaft (19) coaxially rotatably connected within the rotating part (14). The rotating shaft (19) has multiple winding parts (21) around its periphery. The wire (20) is wound around the winding part (21) in a corresponding manner. The rotating part (14) is provided with a rotating unit. The rotating unit is used to drive the rotating part (14) to rotate when the spiral plate (12) is in elastic compression deformation, so that the wire (20) passes through the wire-passing hole (13) and exits the rotating part (14).

7. The microbubble-enhanced chemical leaching agent diffusion-based dense contaminated soil remediation device according to claim 6, characterized in that, The rotating unit includes a hollow frame (23) fixed to one end of the rotating part (14) near the cover (5). The hollow frame (23) is slidably provided with a sliding cylinder (24). The sliding cylinder (24) has a sliding hole for the rotating shaft (19) to pass through freely. The sliding cylinder (24) is keyed to the hollow frame (23). The wall of the sliding hole is rotatably embedded with a ball (31). The periphery of the rotating shaft (19) has a spiral rolling groove (27) for the ball (31) to engage and roll freely. The end of the sliding cylinder (24) away from the rotating part (14) is fixed with a top support (25). The top support (25) abuts against the inner wall of the receiving compartment (9).

8. The microbubble-enhanced chemical leaching agent diffusion-based dense contaminated soil remediation device according to claim 7, characterized in that, The sliding cylinder (24) is surrounded by a return spring (26), and the two ends of the return spring (26) elastically abut against the hollow frame (23) and the abutment frame (25) respectively in the direction of the elastic force.

9. The dense contaminated soil remediation device with microbubble-enhanced chemical leaching agent diffusion according to claim 6, characterized in that, The winding section (21) is provided with a straightening component, which is used to straighten the wire (20) unwound from the winding section (21).

10. The microbubble-enhanced chemical leaching agent diffusion-based dense contaminated soil remediation device according to claim 9, characterized in that, The straightening assembly includes two connecting arms (29) fixed to the guide part (22). Each of the two connecting arms (29) on the same guide part (22) is rotatably connected to a straightening wheel (30). The two straightening wheels (30) are provided with gear segments around their periphery, and the gear segments of two adjacent straightening wheels (30) are externally meshed. The winding part (21) is provided with a transmission gear segment (28) around its periphery, and the transmission gear segment (28) meshes with the gear segment on one of the straightening wheels (30).

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