Efficient heavy metal contaminated soil remediation equipment

Abstract

The invention is applied to the technical field of soil remediation, and discloses efficient heavy metal contaminated soil remediation equipment which comprises a mounting base, a connecting frame is fixedly arranged on the outer side surface of the upper end of the mounting base, and an efficient material mixing mechanism is arranged on the inner side of the mounting base; the efficient treatment is realized by continuously shoveling the soil and uniformly dispersing the biological agent. According to the efficient heavy metal contaminated soil remediation equipment, the efficient mixing mechanism is arranged, a spiral slide way on the outer side of a center cylinder is matched with a rotating bucket, soil can be continuously shoveled up, and the soil is preliminarily turned over and mixed in the rising process; the biological agent can be uniformly sprayed on the turned soil in the rotating process, full contact between the soil and the biological agent is guaranteed, the mixing uniformity and the treatment efficiency are improved, and compared with traditional equipment, the soil remediation operation can be completed within a shorter time.

Description

Technical Field

[0001] The invention relates to the technical field of soil remediation, and in particular to a highly efficient heavy metal contaminated soil remediation device. Background Art

[0002] In today's environmental field, heavy metal contaminated soil has become a severe global challenge. Once heavy metals such as mercury, cadmium, lead, and chromium enter the soil, they will persist due to their high stability and difficulty in degradation, and will seriously interfere with the physical and chemical properties of the soil, the structure of the microbial community, and the nutrient cycle. More importantly, these heavy metals can be continuously accumulated and amplified in the body through the food chain, and ultimately threaten human health. For example, long-term intake of crops grown in soil contaminated by heavy metals may cause serious consequences such as chronic poisoning, organ damage, and even cancer. As an emerging and highly promising technical means, biological agent remediation of soil has gradually received widespread attention. Compared with traditional physical and chemical remediation methods, biological agent remediation has significant advantages. It mainly uses biologically active ingredients such as microorganisms, plant extracts or enzymes to react with heavy metals in the soil, through biological adsorption, biotransformation, biocomplexation, etc. Various mechanisms can convert heavy metals into low-toxic or non-toxic forms, or fix them in the soil, reducing their migration to the surrounding environment and biological effectiveness. This remediation method is relatively mild, has less disturbance to the soil ecosystem, does not produce a large amount of secondary pollution waste, and is in line with the concept of sustainable development. However, the current soil remediation practice based on biological agents faces many technical bottlenecks. In the addition of biological agents, there is a lack of accurate and efficient equipment to ensure that they are evenly dispersed in the soil, resulting in uneven remediation effects. At the same time, in the mixing process of soil and biological agents, existing equipment is difficult to achieve sufficient and continuous stirring, so that the two cannot fully contact and react, greatly reducing the remediation efficiency. In addition, during the remediation operation, the treated soil is often disturbed again and mixed with untreated soil, which not only affects the progress of the remediation, but may also cause secondary pollution in the remediated area. Summary of the invention

[0003] The purpose of the present invention is to provide a highly efficient heavy metal contaminated soil remediation device to solve the problems of uneven mixing, inaccurate addition of biological agents, and easy secondary disturbance of the treated soil in the existing heavy metal contaminated soil remediation equipment proposed in the above background technology, resulting in low remediation efficiency and poor effect.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a highly efficient heavy metal contaminated soil remediation device, comprising a mounting seat, a connecting frame is fixedly arranged on the outer surface of the upper end of the mounting seat, and a highly efficient mixing mechanism is arranged on the inner side of the mounting seat, and highly efficient treatment is achieved by continuously scooping up the soil and evenly spreading the biological agent; The high-efficiency mixing mechanism includes: a center tube, which is arranged on the inner side of a mounting seat, and a slide is fixedly arranged on the outer surface of the center tube, and a rotating bucket is installed at the lower end of the slide, a distribution plate is fixedly arranged on the lower end of the center tube, and a baffle is fixedly arranged on the outer surface of the distribution plate, a center rod is arranged inside the center tube, and a functional rod is fixedly arranged on the outer surface of the center rod, and a nozzle is fixedly installed on the outer surface of the functional rod, a center gear is fixedly arranged on the outer surface of the upper end of the center rod, a mounting rod is fixedly arranged on the inner surface of the mounting seat, and a motor is fixedly installed on the outer surface of one side of the mounting rod, and a transmission gear is fixedly connected to the lower end of the output shaft of the motor, a sliding groove is opened on the inner top surface of the mounting seat, and a sliding sliding seat is installed inside the sliding groove.

[0005] Preferably, the center tube is fixedly connected to the sliding seat, and the center tube is rotatably connected to the mounting seat through the sliding seat, the slide is a spiral design with different diameters at both ends, and the longitudinal section of the slide is a C-shaped design with an opening facing upward, and the upper end of the slide passes through the upper outer surface of the center tube, and the diameter of the upper end of the slide is smaller than the diameter of the lower end of the slide.

[0006] By adopting the above technical solution, the slide can continuously drive the soil upward through the bucket.

[0007] Preferably, the connection between the upper end side surface of the distribution plate and the lower end of the central tube is hollowed out, the baffles are arc-shaped, and the baffles are evenly distributed on the upper end side surface of the distribution plate.

[0008] By adopting the above technical solution, the distribution plate and the baffle plate can evenly distribute the fallen soil.

[0009] Preferably, the upper end of the center rod passes through the upper surface of the mounting rod, and the center rod is rotatably connected to the mounting rod, the inner surface of the upper end of the center tube is evenly provided with tooth blocks, the transmission gear is located between the center gear and the tooth blocks on the inner surface of the upper end of the center tube, and the transmission gear is respectively meshed with the center rod and the center tube through the center gear and the tooth blocks on the inner surface of the upper end of the center tube.

[0010] By adopting the above technical solution, the central rod and the central tube can rotate in opposite directions.

[0011] Preferably, a pressurized liquid injection mechanism is provided on the surface of the mounting rod, and the bioagent is pressurized and transmitted through the rotation of the central cylinder, thereby ensuring that the bioagent can be sprayed out at a suitable speed according to the rotation speed of the central cylinder to shovel the soil.

[0012] The above technical solution enables the biological agent to be stably mixed with the soil.

[0013] Preferably, the pressurized injection mechanism includes: an extrusion column, which is fixedly arranged on the upper end surface of the center tube, a piston cavity is opened inside one end of the mounting rod, a sliding piston block is installed at the lower end of the piston cavity, a one-way air inlet valve is installed on the upper end side surface of the piston cavity, and a one-way air outlet valve is installed on the upper end surface of the piston cavity, a liquid storage barrel is fixedly arranged on the upper surface of one end of the mounting rod, and the upper end side surface of the liquid storage barrel is connected to the one-way air outlet valve through a connecting pipe, one end of the liquid storage barrel is connected to the lower end side surface of the liquid storage barrel, and the other end of the discharge pipe is rotatably connected to the upper end of the center rod, and the end of the discharge pipe connected to the center rod is connected to the internal cavity of the center rod.

[0014] By adopting the above technical solution, the discharge tube can maintain stable injection of biological agents into the interior of the central rod during the rotation of the central rod.

[0015] Preferably, the upper end of the extrusion column is hemispherical in design, and the extrusion column is evenly arranged on the upper end surface of the center tube, and the upper end of the extrusion column is in contact with the lower end of the piston block, the upper end of the piston block is connected to the piston cavity by sliding friction, and a spring is connected between the piston block and the piston cavity, and the lower end of the piston block is an isosceles trapezoidal design.

[0016] By adopting the above technical solution, the squeezing column can pressurize the inside of the liquid storage barrel by alternately squeezing the piston blocks.

[0017] Preferably, a timely driving mechanism is provided at the lower end of the mounting seat, and timely shoveling of the soil is achieved by controlling the angle of the bucket, so as to ensure that the soil processed later will not be shoveled again; The timely driving mechanism includes: a sliding rod, which is slidably mounted on the lower end of the sliding seat, and a rotating guide rod is installed on the side surface of the sliding rod, a guide groove is opened on the inner surface of the lower end of the mounting seat, and one end of a lifting rod is fixedly arranged on the lower surface of the sliding rod.

[0018] By adopting the above technical solution, the bucket can avoid scooping up the processed soil by rotating.

[0019] Preferably, a pressure relief hole is opened on a side surface of the inner cavity of the sliding seat where the upper end of the sliding rod is located, and one end of the guide rod is located inside the guide groove.

[0020] By adopting the above technical solution, the guide rod can drive the lifting rod and the sliding rod to move up and down along the shape of the guide groove.

[0021] Preferably, the lower end of the lifting rod is slidably connected to the inner bottom surface of the bucket, and the end of the lifting rod connected to the bucket is located on the side of the bucket shaft facing the bucket opening.

[0022] By adopting the above technical solution, the bucket can ensure stable connection with the lower end of the lifting rod by sliding with the lower end of the lifting rod during the rotation process.

[0023] Compared with the prior art, the beneficial effects of the present invention are: the highly efficient heavy metal contaminated soil remediation equipment: 1. By setting up an efficient mixing mechanism, the spiral slideway on the outside of the central tube cooperates with the rotating bucket to continuously shovel up the soil, so that the soil can be initially turned and mixed during the rising process. The central rod in the central tube and the upper functional rod and the nozzle can evenly spray the biological agent on the turned soil during the rotation process, ensuring full contact between the soil and the biological agent, greatly improving the mixing uniformity and processing efficiency, and can complete large-scale soil remediation operations in a shorter time than traditional equipment; Furthermore, by setting the center rod and the center tube in opposite directions, when the soil to be used for gas production falls from the upper end of the center tube into the interior of the center tube, the center rod can further break up the falling soil through the functional rod, and cooperate with the biological agent sprayed by the nozzle on the surface of the functional rod to achieve the purpose of fully mixing the biological agent and the soil; Furthermore, a distribution plate and a baffle are used to receive the falling soil and rotate it outward, so that the processed soil can fall within the rotation range of the bucket, which not only ensures uniform distribution of the soil, but also prevents the soil from being scooped up by the bucket again.

[0024] 2. The pressurized injection mechanism drives the extrusion column to move with the help of the rotation of the central cylinder. The extrusion column periodically squeezes the piston block, causing the pressure in the piston chamber to change, thereby realizing the precise extraction and transmission of the biological agent from the liquid storage barrel. This design can automatically adjust the spraying speed of the biological agent according to the rotation speed of the central cylinder to shovel the soil, ensuring that the amount of biological agent added is accurately matched with the amount of soil treated, avoiding waste or shortage of biological agents, and effectively improving the stability and repeatability of the repair effect; 3. The timely driving mechanism can adjust the bucket angle in time according to the position and working status of the bucket through the coordinated action of the sliding rod, guide rod, lifting rod and bucket. When the bucket passes through the treated soil area, the bucket can be lifted to effectively prevent the treated soil from being shoveled up again and mixed into the untreated soil, ensuring the one-time and effectiveness of the restoration work, reducing unnecessary repetitive labor and damage to the restored soil, and is conducive to maintaining the structural and ecological stability of the soil after restoration. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 This is a schematic diagram of the three-dimensional structure of the center tube, slideway and bucket connection of the present invention; Figure 3It is a schematic diagram of the three-dimensional structure of the overall cutaway surface of the present invention; Figure 4 This is a schematic diagram of the three-dimensional structure of the connection between the motor and the transmission gear of the present invention; Figure 5 This is a schematic diagram of the three-dimensional structure of the central gear and the transmission gear connected to each other in the present invention; Figure 6 It is a three-dimensional structural schematic diagram of the cross-section surface connecting the mounting seat and the sliding groove of the present invention; Figure 7 It is a three-dimensional structural schematic diagram of the cross-section surface connecting the sliding seat and the sliding rod of the present invention; Figure 8 This is a schematic diagram of the three-dimensional structure of the connection between the slideway and the bucket of the present invention; Fig. 9 This is a schematic diagram of the three-dimensional structure of the connection between the center rod and the transmission gear of the present invention; Fig.10 This is a schematic diagram of the three-dimensional structure of the bucket and the lifting rod connected to the present invention; Fig.11 It is a schematic diagram of the three-dimensional structure of the central tube, distribution plate and baffle connection of the present invention.

[0026] In the figure: 1. mounting seat; 2. connecting frame; 3. center tube; 4. slideway; 5. bucket; 6. distribution plate; 7. baffle; 8. center rod; 9. function rod; 10. nozzle; 11. center gear; 12. motor; 13. transmission gear; 14. sliding groove; 15. sliding seat; 16. extrusion column; 17. mounting rod; 18. piston chamber; 19. piston block; 20. one-way air inlet valve; 21. one-way air outlet valve; 22. liquid storage barrel; 23. connecting pipe; 24. discharge pipe; 25. sliding rod; 26. guide rod; 27. guide groove; 28. lifting rod. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] See also Figure 1-Figure 11 The present invention provides a technical solution: a highly efficient heavy metal contaminated soil remediation device.

[0029] Embodiment 1: This embodiment discloses a mounting seat 1, a connecting frame 2 is fixedly provided on the outer surface of the upper end of the mounting seat 1, and an efficient mixing mechanism is provided on the inner side of the mounting seat 1, which realizes efficient treatment by continuously scooping up the soil and evenly spreading the biological agent; The high-efficiency mixing mechanism includes: a central cylinder 3, which is arranged on the inner side of the mounting seat 1, and a slideway 4 is fixedly arranged on the outer surface of the central cylinder 3, and a rotating bucket 5 is installed at the lower end of the slideway 4, a distribution plate 6 is fixedly arranged on the lower end of the central cylinder 3, and a baffle 7 is fixedly arranged on the outer surface of the distribution plate 6, a central rod 8 is arranged inside the central cylinder 3, and a functional rod 9 is fixedly arranged on the outer surface of the central rod 8, and a nozzle 10 is fixedly installed on the outer surface of the functional rod 9, a central gear 11 is fixedly arranged on the upper end outer surface of the central rod 8, a mounting rod 17 is fixedly arranged on the inner surface of the mounting seat 1, and a motor 12 is fixedly installed on the outer surface of one side of the mounting rod 17, and a transmission gear 13 is fixedly connected to the lower end of the output shaft of the motor 12, a sliding groove 14 is opened on the inner top surface of the mounting seat 1, and a sliding seat 15 is installed inside the sliding groove 14; The central tube 3 is fixedly connected to the sliding seat 15, and the central tube 3 is rotatably connected to the mounting seat 1 through the sliding seat 15. The slideway 4 is a spiral design with different diameters at both ends, and the longitudinal section of the slideway 4 is a C-shaped design with an opening facing upward, and the upper end of the slideway 4 passes through the outer surface of the upper end of the central tube 3, and the diameter of the upper end of the slideway 4 is smaller than the diameter of the lower end of the slideway 4; The connection between the upper end side surface of the distribution plate 6 and the lower end of the central tube 3 is hollowed out, the baffle 7 is arc-shaped, and the baffle 7 is evenly distributed on the upper end side surface of the distribution plate 6; The upper end of the center rod 8 passes through the upper surface of the mounting rod 17, and the center rod 8 is rotatably connected to the mounting rod 17. The inner surface of the upper end of the center tube 3 is evenly provided with tooth blocks. The transmission gear 13 is located between the center gear 11 and the tooth blocks on the inner surface of the upper end of the center tube 3. The transmission gear 13 is meshed and connected with the center rod 8 and the center tube 3 through the center gear 11 and the tooth blocks on the inner surface of the upper end of the center tube 3 respectively. During use, the motor 12 on one side of the mounting rod 17 is started, and the motor 12 drives the transmission gear 13 to rotate. The transmission gear 13 drives the center rod 8 and the center tube 3 to rotate in the opposite direction through the tooth block connected to the center gear 11 and the inner side of the upper end of the center tube 3. The center tube 3 rotates stably on the inner side of the mounting seat 1 through the connection between the sliding seat 15 and the sliding groove 14. When the power equipment is connected to the mounting seat 1 through the connecting frame 2 and drives the mounting seat 1 to move forward, the slide 4 scoops up the soil on the ground through the bucket 5 during the rotation process, and the rotation of the slide 4 makes the soil move under the rotation force and the sliding groove 14. Under the action of the inclined surface of the bottom of the channel 4, the soil is gradually transported upward to the upper end of the central tube 3 and enters the interior of the central tube 3. The soil falls downward inside the central tube 3 under the action of gravity, and the falling soil is broken up by the central rod 8 through the functional rod 9. At the same time, the biological agent inside the central rod 8 is sprayed out through the nozzle 10 on the outer surface of the functional rod 9, so that the biological agent can be fully mixed with the soil. When the soil passes downward through the lower end of the central tube 3 and falls to the surface of the distribution plate 6, the soil is evenly dispersed and falls around under the action of the distribution plate 6 and the baffle 7, ensuring the uniform distribution of the soil.

[0030] Embodiment 2: Based on Embodiment 1, this embodiment discloses that a pressurized liquid injection mechanism is provided on the surface of the mounting rod 17, and the biological agent is pressurized and transmitted through the rotation of the central cylinder 3, so as to ensure that the biological agent can be sprayed out at a suitable speed according to the rotation speed of the central cylinder 3 to shovel the soil; The pressurized liquid injection mechanism includes: an extrusion column 16, which is fixedly arranged on the upper end surface of the center tube 3, a piston chamber 18 is opened inside one end of the mounting rod 17, a sliding piston block 19 is installed at the lower end of the piston chamber 18, a one-way air inlet valve 20 is installed on the upper end side surface of the piston chamber 18, and a one-way air outlet valve 21 is installed on the upper end surface of the piston chamber 18, a liquid storage barrel 22 is fixedly arranged on the upper surface of one end of the mounting rod 17, and the upper end side surface of the liquid storage barrel 22 is connected to the one-way air outlet valve 21 through a connecting pipe 23, one end of a discharge pipe 24 is connected to the lower end side surface of the liquid storage barrel 22, and the other end of the discharge pipe 24 is rotatably connected to the upper end of the center rod 8, and the end of the discharge pipe 24 connected to the center rod 8 is connected to the internal cavity of the center rod 8; The upper end of the extrusion column 16 is designed to be hemispherical, and the extrusion column 16 is evenly arranged on the upper end surface of the center tube 3, and the upper end of the extrusion column 16 is in contact with the lower end of the piston block 19, the upper end of the piston block 19 is connected to the piston cavity 18 by sliding friction, and a spring is connected between the piston block 19 and the piston cavity 18, and the lower end of the piston block 19 is designed to be an isosceles trapezoid; During the rotation of the central cylinder 3, the central cylinder 3 alternately squeezes the inclined surface of the lower end of the piston block 19 through the squeezing column 16 at the upper end. When the piston block 19 is pressurized, the piston block 19 slides up to inject the air in the piston chamber 18 into the upper end of the liquid storage barrel 22 through the one-way air outlet valve 21 and the connecting pipe 23. As the internal pressure of the liquid storage barrel 22 increases, the biological agent pre-injected in the liquid storage barrel 22 is injected into the rotating central rod 8 through the discharge pipe 24, thereby increasing the internal pressure of the central rod 8 and causing the biological agent to be sprayed out through the nozzle 10. When the squeezing column 16 rotates away from the piston block 19, the piston block 19 slides down to inhale external air into the piston chamber 18 through the one-way air inlet valve 20 to balance the pressure.

[0031] Embodiment 3: Based on Embodiment 1 and Embodiment 2, this embodiment discloses that a timely driving mechanism is provided at the lower end of the mounting seat 1, and timely shoveling of soil is achieved by controlling the angle of the bucket 5 to ensure that the processed soil behind will not be shoveled again; The timely driving mechanism includes: a sliding rod 25, which is slidably mounted on the lower end of the sliding seat 15, and a rotating guide rod 26 is mounted on the side surface of the sliding rod 25, a guide groove 27 is provided on the inner side surface of the lower end of the mounting seat 1, and one end of a lifting rod 28 is fixedly mounted on the lower surface of the sliding rod 25; A pressure relief hole is opened on the side surface of the inner cavity of the sliding seat 15 where the upper end of the sliding rod 25 is located, and one end of the guide rod 26 is located inside the guide groove 27; The lower end of the lifting rod 28 is slidably connected to the inner bottom surface of the bucket 5, and the end of the lifting rod 28 connected to the bucket 5 is located on the side of the bucket 5 rotation axis facing the opening of the bucket 5; During the rotation of the central tube 3, the guide rod 26 on one side of the sliding rod 25 moves along the guide rod 26. When the bucket 5 rotates to face the forward direction of the power equipment, the guide rod 26 drives the sliding rod 25 to slide down under the pressure of the inner surface of the downward end of the guide groove 27, so that the sliding rod 25 drives the bucket 5 below to flip downward through the lifting rod 28, so that the bucket 5 can scoop up the soil. When the bucket 5 rotates to face the forward direction of the power equipment away from the guide equipment, the guide rod 26 drives the sliding rod 25 to slide up under the pressure of the inner surface of the upward end of the guide groove 27, so that the sliding rod 25 drives the bucket 5 below to flip upward through the lifting rod 28, so that the bucket 5 will not scoop up the soil behind. During the rotation process, the bucket 5 ensures a stable connection with the lifting rod 28 by sliding with the lower end of the lifting rod 28.

[0032] The above specific embodiments further illustrate the purpose, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above are only specific embodiments of the present invention and do not limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention are included in the protection scope of the present invention.

Claims

1. A highly effective heavy metal contaminated soil remediation device, comprising a mounting seat (1), a connecting frame (2) being fixedly arranged on the outer surface of the upper end of the mounting seat (1), characterized in that: An efficient mixing mechanism is provided on the inner side of the mounting seat (1), which realizes efficient processing by continuously scooping up the soil and evenly spreading the biological agent; The high-efficiency mixing mechanism comprises: a central tube (3), the central tube (3) being arranged on the inner side of a mounting seat (1), a slideway (4) being fixedly arranged on the outer side surface of the central tube (3), and a rotating bucket (5) being installed at the lower end of the slideway (4), a distribution plate (6) being fixedly arranged on the lower end of the central tube (3), and a baffle (7) being fixedly arranged on the outer side surface of the distribution plate (6), a central rod (8) being arranged inside the central tube (3), and a functional rod (9) being fixedly arranged on the outer side surface of the central rod (8), and the functional rod (9) being fixedly arranged on the outer side surface of the central rod (8), and the functional rod (9) being fixedly arranged on the outer side surface of the central rod (8). A nozzle (10) is fixedly mounted on the outer surface of the energy rod (9), a center gear (11) is fixedly mounted on the outer surface of the upper end of the center rod (8), a mounting rod (17) is fixedly mounted on the inner surface of the mounting seat (1), a motor (12) is fixedly mounted on the outer surface of one side of the mounting rod (17), and a transmission gear (13) is fixedly connected to the lower end of the output shaft of the motor (12), a sliding groove (14) is formed on the inner top surface of the mounting seat (1), and a sliding seat (15) is mounted inside the sliding groove (14).

2. The highly effective heavy metal contaminated soil remediation equipment according to claim 1 is characterized by: The central tube (3) is fixedly connected to the sliding seat (15), and the central tube (3) is rotatably connected to the mounting seat (1) via the sliding seat (15); the slideway (4) is of a spiral design with different diameters at both ends, and the longitudinal section of the slideway (4) is of a C-shaped design with an opening facing upward, and the upper end of the slideway (4) passes through the upper outer surface of the central tube (3), and the diameter of the upper end of the slideway (4) is smaller than the diameter of the lower end of the slideway (4).

3. The highly effective heavy metal contaminated soil remediation equipment according to claim 1 is characterized by: The connection between the upper end side surface of the distribution plate (6) and the lower end of the central tube (3) is of a hollow design, and the baffles (7) are of an arc-shaped design, and the baffles (7) are evenly distributed on the upper end side surface of the distribution plate (6).

4. The highly effective heavy metal contaminated soil remediation equipment according to claim 1 is characterized by: The upper end of the center rod (8) passes through the upper surface of the mounting rod (17), and the center rod (8) is rotatably connected to the mounting rod (17). The inner surface of the upper end of the center tube (3) is evenly provided with tooth blocks. The transmission gear (13) is located between the center gear (11) and the tooth blocks on the inner surface of the upper end of the center tube (3). The transmission gear (13) is meshed with the center rod (8) and the center tube (3) through the center gear (11) and the tooth blocks on the inner surface of the upper end of the center tube (3).

5. The highly effective heavy metal contaminated soil remediation equipment according to claim 1 is characterized by: The surface of the mounting rod (17) is provided with a pressurized liquid injection mechanism, which realizes pressurization and transmission of the biological agent through the rotation of the central cylinder (3), thereby ensuring that the biological agent can be sprayed out at a suitable speed according to the rotation speed of the central cylinder (3) to shovel the soil.

6. The highly effective heavy metal contaminated soil remediation equipment according to claim 5 is characterized by: The pressurized liquid injection mechanism comprises: an extrusion column (16), the extrusion column (16) being fixedly arranged on the upper end surface of the central cylinder (3); a piston chamber (18) being provided inside one end of the mounting rod (17); a sliding piston block (19) being installed at the lower end of the piston chamber (18); a one-way air inlet valve (20) being installed on the upper end side surface of the piston chamber (18); and a one-way air outlet valve (21) being installed on the upper end surface of the piston chamber (18); a liquid storage barrel (22) being fixedly arranged on the upper end side surface of one end of the mounting rod (17); and the upper end side surface of the liquid storage barrel (22) and the one-way air outlet valve (21) being communicated with via a connecting pipe (23); one end of a discharge pipe (24) being connected to the lower end side surface of the liquid storage barrel (22); and the other end of the discharge pipe (24) being rotatably connected to the upper end of the central rod (8); and the end of the discharge pipe (24) connected to the central rod (8) being communicated with the internal cavity of the central rod (8).

7. The highly effective heavy metal contaminated soil remediation equipment according to claim 6 is characterized by: The upper end of the extrusion column (16) is of hemispherical design, and the extrusion column (16) is evenly arranged on the upper end surface of the central tube (3), and the upper end of the extrusion column (16) fits with the lower end of the piston block (19), the upper end of the piston block (19) is in sliding friction connection with the piston chamber (18), and a spring is connected between the piston block (19) and the piston chamber (18), and the lower end of the piston block (19) is of isosceles trapezoidal design.

8. The highly effective heavy metal contaminated soil remediation equipment according to claim 1 is characterized by: The lower end of the mounting seat (1) is provided with a timely driving mechanism, which controls the angle of the bucket (5) to achieve timely shoveling of soil, thereby ensuring that the soil that has been processed later will not be shoveled again; The timely driving mechanism comprises: a sliding rod (25), the sliding rod (25) is slidably mounted on the lower end of the sliding seat (15), and a rotatable guide rod (26) is mounted on the side surface of the sliding rod (25), a guide groove (27) is formed on the inner side surface of the lower end of the mounting seat (1), and one end of a lifting rod (28) is fixedly mounted on the lower surface of the sliding rod (25).

9. The highly effective heavy metal contaminated soil remediation equipment according to claim 8 is characterized by: A pressure relief hole is opened on the side surface of the internal cavity of the sliding seat (15) where the upper end of the sliding rod (25) is located, and one end of the guide rod (26) is located inside the guide groove (27).

10. The highly effective heavy metal contaminated soil remediation equipment according to claim 8, characterized in that: The lower end of the lifting rod (28) is slidably connected to the inner bottom surface of the bucket (5), and the end of the lifting rod (28) connected to the bucket (5) is located on the side of the bucket (5) rotating shaft facing the opening of the bucket (5).

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