An ex-situ stirring leaching device for removing heavy metals in soil

Abstract

The application discloses a kind of ex situ stirring leaching device for removing heavy metals in soil, including soil leaching mechanism, the soil leaching mechanism includes leaching isolation shell, and the right side of leaching isolation shell is fixedly connected with feeding elbow pipe located at its top, and soil supplement bucket is fixedly connected with the other end of feeding elbow pipe;Through synchronous alignment mechanism, hammering and poking mechanism can be synchronized with bearing stirring mechanism to ensure that hammering and poking mechanism is aligned with long and narrow hole on rotating filter residue pipe, and through hammering and poking mechanism, the blockage in long and narrow hole can be poked out in time, to ensure that rotating filter residue pipe has excellent permeability, which helps to increase washing efficiency and quality, and does not need to stop regularly and clean the blockage, without interrupting the washing process, with high washing efficiency, without human intervention and cleaning the blockage, more time-saving and labor-saving, with higher washing efficiency, to improve the practicability of the ex situ stirring leaching device for removing heavy metals in soil.

Description

Technical Field

[0001] This invention relates to the field of contaminated soil remediation equipment, and more specifically, to an in-situ stirring and rinsing device for removing heavy metals from soil. Background Technology

[0002] Soil is a loose layer of material on the Earth's surface, composed of minerals, organic matter from the decomposition of plant and animal remains, soil organisms, water, air, and oxidized humus. With the continuous acceleration of industrialization, unreasonable mining and smelting emissions of mineral resources, long-term irrigation with sewage and application of sludge, atmospheric deposition caused by human activities, and the application of chemical fertilizers and pesticides have led to serious soil pollution, requiring soil remediation. Soil remediation technologies mainly include chemical leaching, thermodynamic remediation, thermal desorption remediation, incineration, landfill, composting, phytoremediation, permeable reactive barrier, and bioremediation. Among them, chemical leaching is one of the main technologies commonly used in the soil remediation industry. Depending on the location of the leaching site, it can be divided into in-situ leaching and ex-situ leaching.

[0003] Existing in-situ agitated scrubbing devices for removing heavy metals from soil mainly consist of an outer shell, a rotary screen, a drive mechanism, and a scrubbing mechanism. In operation, contaminated soil is first placed inside the rotary screen. The drive mechanism then rotates the screen, and a spraying mechanism sprays a cleaning agent onto the soil. The soil gradually absorbs the cleaning agent, forming muddy water. This muddy water passes through holes in the rotary screen into the outer shell and is discharged to the next processing stage via a pipe. Particulate matter in the soil is then trapped inside the rotary screen and moves towards the discharge pipe, where it is discharged, thus achieving soil remediation. However, the rotary screen is easily clogged by particles during use, reducing scrubbing efficiency and effectiveness. This necessitates periodic shutdowns and cleaning of the screen, interrupting the scrubbing process and reducing efficiency. Furthermore, manual intervention to clean the screen is time-consuming and labor-intensive, further reducing efficiency. Therefore, there is an urgent need to design an in-situ agitated scrubbing device for removing heavy metals from soil. Summary of the Invention

[0004] 1. Technical problems to be solved

[0005] Existing in-situ stirring and rinsing devices for removing heavy metals from soil mainly consist of an outer shell, a rotary screen, a drive mechanism, and a rinsing mechanism. In operation, contaminated soil is first placed inside the rotary screen, then the drive mechanism rotates the screen. Next, a spraying mechanism sprays a cleaning agent onto the contaminated soil, which gradually enters the cleaning agent and forms muddy water. This muddy water then passes through holes in the rotary screen into the outer shell and is discharged to the next processing stage via a pipe. Particulate matter in the soil is then trapped inside the rotary screen and moves towards the slag discharge pipe, where it is discharged, thus achieving soil remediation. However, the rotary screen is easily clogged by particulate matter during use, reducing washing efficiency and effectiveness. This necessitates periodic shutdowns and cleaning of the screen, interrupting the washing process and resulting in low efficiency. Furthermore, manual intervention is required, which is time-consuming and labor-intensive, further reducing washing efficiency. The purpose of this invention is to provide an in-situ stirring and rinsing device for removing heavy metals from soil, which effectively solves the problems mentioned in the background art.

[0006] 2. Technical Solution

[0007] To solve the above problems, the present invention adopts the following technical solution.

[0008] An in-situ agitated leaching device for removing heavy metals from soil includes a soil leaching mechanism. The soil leaching mechanism includes a leaching isolation shell. A feeding bend is fixedly connected to the top of the leaching isolation shell on its right side, and a soil replenishment hopper is fixedly connected to the other end of the feeding bend. A lifting support leg is fixedly connected to the bottom of the leaching isolation shell, and a mud-water collection hopper is fixedly connected to the bottom of the mud-water collection hopper. A mud-water discharge pipe is fixedly connected to the bottom of the leaching isolation shell on its left side. A solid waste discharge port is provided on the left side of the leaching isolation shell, and the solid waste discharge port communicates with the solid waste discharge nozzle. A leaching integrated assembly is installed on the left side of the leaching isolation shell. A carrying agitation mechanism is provided inside the leaching isolation shell. The carrying agitation mechanism includes a rotating filter tube installed inside the leaching isolation shell. The rotating filter tube has a narrow, elongated hole. The right end of the leaching integrated assembly... Extending into the interior of the rotating filter tube, a drive center is provided on the top surface of the rinsing isolation shell. The drive center includes a drive motor, which is fixedly installed on the top surface of the rinsing isolation shell and is connected to the rotating filter tube. Inside the rinsing isolation shell, a reciprocating mechanism is provided, which includes a reciprocating block slidably connected to the top surface of the inner cavity of the rinsing isolation shell. Inside the rinsing isolation shell, a synchronous alignment mechanism is provided, which includes a synchronous alignment ring connected to the reciprocating block and fitted onto the outside of the rotating filter tube. Inside the synchronous alignment ring, a hammering and plugging mechanism is provided, which includes multiple hammering and plugging chambers located inside the synchronous alignment ring. Inside the synchronous alignment ring, a powerful plugging mechanism is provided, which includes a powerful plugging guide hole located on the top surface of the inner cavity of the hammering and plugging chamber.

[0009] Preferably, the bearing and stirring mechanism further includes a large bearing ring, which is fixedly connected to the inner wall of the rinsing and isolation shell. There are two large bearing rings, which are located at the left and right ends of the rinsing and isolation shell, respectively. Four centering clamping wheels are fixedly connected to the inner wall of the large bearing ring. The four centering clamping wheels are evenly distributed on the inner wall of the large bearing ring. The centering clamping ring is movably clamped between the four centering clamping wheels. A solid waste discharge pipe is fixedly inserted into the inside of one centering clamping ring, and a soil inlet pipe is fixedly inserted into the inside of the other centering clamping ring. A rotating filter pipe is fixedly connected between the solid waste discharge pipe and the soil inlet pipe. A connecting compensation pipe located at the right end of the soil inlet pipe is movably sleeved on the outside of the soil inlet pipe. The connecting compensation pipe is fixedly connected to the right side of the inner cavity of the rinsing and isolation shell. The end of the feeding bend pipe passes through the connecting compensation pipe and extends into the inside of the soil inlet pipe. Pushing blades are fixedly connected to the inner walls of the solid waste discharge pipe, the soil inlet pipe, and the rotating filter pipe.

[0010] Preferably, the drive hub further includes a drive pulley, which is fixedly sleeved on the end of the output shaft of the drive motor. A transmission belt is sleeved on the outside of the drive pulley, and the bottom end of the transmission belt extends downward into the interior of the rinsing isolation shell and is sleeved with a driven pulley. The driven pulley is fixedly sleeved on the outside of the solid waste discharge end pipe.

[0011] Preferably, the reciprocating mechanism further includes a reciprocating slide rod, which is fixedly connected between two large bearing rings. A reciprocating block is slidably sleeved on the outside of the reciprocating slide rod. A displacement reciprocating screw is movably inserted into the reciprocating block, and the displacement reciprocating screw is threadedly engaged with the reciprocating block. The right end of the displacement reciprocating screw is movably inserted into the left side of the large bearing ring at the right end of the rinsing isolation shell. The left end of the displacement reciprocating screw passes through the large bearing ring at the left end of the rinsing isolation shell and is fixedly sleeved with a conversion pulley, which is connected to the transmission belt.

[0012] Preferably, the synchronous alignment mechanism further includes a synchronous alignment U-shaped rod, one end of which is fixedly connected to the surface of the solid waste discharge pipe, and the other end of which is fixedly connected to the surface of the soil inlet pipe. Multiple synchronous alignment U-shaped rods are evenly distributed on the surfaces of the solid waste discharge pipe and the soil inlet pipe. A synchronous alignment ring is slidably sleeved on the outside of the synchronous alignment U-shaped rod, and a synchronous alignment convex ring is fixedly sleeved on the outside of the synchronous alignment ring. The synchronous alignment mechanism also includes a synchronous alignment base ring, which is movably sleeved on the outside of the synchronous alignment ring. The synchronous alignment base ring is fixedly connected to the reciprocating displacement block. A synchronous alignment annular groove is formed on the inner side of the synchronous alignment base ring, and the synchronous alignment convex ring is slidably inserted into the inside of the synchronous alignment annular groove.

[0013] Preferably, the hammering and plugging mechanism further includes a hammering and plugging expansion groove, which is formed on the top surface of the inner cavity of the hammering and plugging chamber. A hammering and plugging buffer spring is fixedly connected to the top surface of the inner cavity of the hammering and plugging expansion groove. The bottom end of the hammering and plugging buffer spring extends downward into the interior of the hammering and plugging chamber and is fixedly connected to the hammering and plugging counterweight slide plate. The hammering and plugging counterweight slide plate is slidably inserted into the interior of the hammering and plugging chamber. A hammering and plugging counterweight strip is fixedly connected to the bottom surface of the hammering and plugging counterweight slide plate. The bottom end of the hammering and plugging counterweight strip extends downward into the inner side of the synchronization alignment ring and is fixedly connected to an isosceles trapezoidal hammering and plugging head. The isosceles trapezoidal hammering and plugging head is adapted to the narrow hole on the rotating filter tube.

[0014] Preferably, the powerful plugging mechanism further includes a powerful plugging arc plate, which is fixedly connected to the inner wall of the synchronous alignment annular groove and located at its top. Both ends of the powerful plugging arc plate are provided with powerful plugging transition surfaces. The powerful plugging mechanism also includes a powerful plugging rod, which is slidably inserted into the inside of the powerful plugging guide hole. The top end of the powerful plugging rod is adapted to the surface of the powerful plugging arc plate and the powerful plugging transition surface, and the bottom end of the powerful plugging rod is connected to the surface of the hammer-punching counterweight slide plate.

[0015] Preferably, the powerful plugging rod further includes a powerful plugging column, which is slidably inserted into the powerful plugging guide hole. A rolling steel ball is movably embedded on the top surface of the powerful plugging column. A powerful plugging chamber is formed inside the powerful plugging column. A powerful plugging spring is fixedly connected to the top surface of the inner cavity of the powerful plugging chamber. A powerful plugging piston is fixedly connected to the bottom end of the powerful plugging spring. The powerful plugging piston is slidably inserted into the inside of the powerful plugging chamber. A powerful plugging shortening rod is fixedly connected to the bottom surface of the powerful plugging piston. The bottom end of the powerful plugging shortening rod is fixedly connected to the top surface of the hammer-driven plugging counterweight slide plate.

[0016] 3. Beneficial effects

[0017] Compared with the prior art, the advantages of this invention are:

[0018] ① The drive center can drive the bearing agitator to rotate, which in turn causes the soil to tumble and agitate. The soil washing mechanism can spray cleaning agent onto the soil for washing. The synchronous alignment mechanism ensures that the hammer-punching mechanism moves synchronously with the bearing agitator, aligning the hammer-punching mechanism with the narrow hole on the rotating filter tube. The hammer-punching mechanism can promptly remove the blockage in the narrow hole, ensuring excellent permeability of the rotating filter tube, which helps increase washing efficiency and quality. Moreover, it eliminates the need for periodic shutdowns and blockage removal, ensuring the washing process is not interrupted. It has high washing efficiency, saves time and labor, and improves the practicality of this in-situ agitation and washing device for removing heavy metals from soil.

[0019] ② By using the isosceles trapezoidal shape of the hammer-shaped plugging head, the inner wall of the narrow hole can apply an upward thrust to the isosceles trapezoidal hammer-shaped plugging head during its lateral movement. The powerful plugging rod allows the isosceles trapezoidal hammer-shaped plugging head to retract upwards during lateral movement, ensuring the hammer-shaped plugging mechanism can move laterally. The drive center can drive the reciprocating mechanism, which in turn moves the synchronous alignment mechanism left and right. This mechanism is used to comprehensively plug the rotating filter tube, ensuring good overall permeability and increasing washing efficiency and effectiveness. The powerful plugging mechanism applies radial thrust to the hammer-shaped plugging mechanism, increasing the thrust against the blockage and enhancing the plugging capacity to remove firmly stuck blockages. This further increases washing efficiency and effectiveness, improving the practicality of the off-site stirring and rinsing device for removing heavy metals from soil. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the present invention;

[0021] Figure 2 For the present invention Figure 1 Internal structure diagram;

[0022] Figure 3 For the present invention Figure 2 Left view of the centrally mounted stirring mechanism;

[0023] Figure 4 For the present invention Figure 2 A schematic diagram of the reciprocating displacement mechanism;

[0024] Figure 5 For the present invention Figure 2 Left view of the reciprocating mechanism;

[0025] Figure 6 For the present invention Figure 5 A schematic diagram of the internal structure of the synchronous alignment base ring;

[0026] Figure 7 For the present invention Figure 5 A schematic diagram of the structure of the synchronization alignment circle;

[0027] Figure 8 For the present invention Figure 5 Cross-sectional view at point AA;

[0028] Figure 9 For the present invention Figure 8 A schematic diagram of the internal structure of a medium-strength plugging rod.

[0029] Explanation of the labels in the diagram:

[0030] 1. Soil washing mechanism; 11. Washing isolation shell; 12. Feeding bend; 13. Soil replenishment hopper; 14. Lifting support leg; 15. Mud and water collection hopper; 16. Mud and water discharge pipe; 17. Solid waste discharge nozzle; 18. Solid waste discharge hole; 19. Washing integrated assembly; 2. Bearing and mixing mechanism; 21. Bearing large ring; 22. Centering clamping wheel; 23. Centering clamping ring; 24. Solid waste discharge end pipe; 25. Soil feeding end pipe; 26. Connecting compensation pipe; 27. Rotating filter pipe; 28. Pushing blade; 3. Drive hub; 31. Drive motor; 32. Drive pulley; 33. Transmission belt; 34. Driven pulley; 4. Reciprocating mechanism; 41. Reciprocating slide bar; 42. Reciprocating block; 43. Displacement reciprocating screw; 44. Conversion belt 5. Synchronous alignment mechanism; 51. Synchronous alignment U-shaped rod; 52. Synchronous alignment ring; 53. Synchronous alignment convex ring; 54. Synchronous alignment base ring; 55. Synchronous alignment annular groove; 6. Hammering and plugging mechanism; 61. Hammering and plugging chamber; 62. Hammering and plugging expansion groove; 63. Hammering and plugging buffer spring; 64. Hammering and plugging counterweight slide plate; 65. Hammering and plugging counterweight strip; 66. Isosceles trapezoidal hammering and plugging head; 7. Powerful plugging mechanism; 71. Powerful plugging arc plate; 72. Powerful plugging transition surface; 73. Powerful plugging guide hole; 74. Powerful plugging rod; 741. Powerful plugging column; 742. Rolling steel ball; 743. Powerful plugging chamber; 744. Powerful plugging spring; 745. Powerful plugging piston; 746. Powerful plugging shortening rod. Detailed Implementation

[0031] 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 a part of the embodiments of the present invention, and not all of them. 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.

[0032] An ex-situ stirred leaching apparatus for removing heavy metals from soil includes a soil leaching mechanism 1. Please refer to [link / reference]. Figure 1 The soil washing mechanism 1 includes a washing isolation shell 11. A feeding bend 12 is fixedly connected to the right side of the washing isolation shell 11 and located at its top. A soil replenishment hopper 13 is fixedly connected to the other end of the feeding bend 12. A lifting support leg 14 is fixedly connected to the bottom surface of the washing isolation shell 11. A mud and water collection hopper 15 is fixedly connected to the bottom surface of the washing isolation shell 11. A mud and water discharge pipe 16 is fixedly connected to the bottom end of the mud and water collection hopper 15. A solid waste discharge nozzle 17 is fixedly connected to the left side of the washing isolation shell 11 and located at its bottom. Please refer to [link / reference]. Figure 2A solid waste discharge hole 18 is provided on the left side of the rinsing isolation shell 11. The solid waste discharge hole 18 is connected to the solid waste discharge nozzle 17. Please refer to [link / reference]. Figure 1 A rinsing integrated assembly 19 is installed on the left side of the rinsing isolation housing 11 for spraying cleaning agent onto the soil for rinsing. Please refer to [link to relevant documentation]. Figure 2 The washing isolation housing 11 has a supporting stirring mechanism 2 inside, which includes a rotating filter tube 27. The rotating filter tube 27 is installed inside the washing isolation housing 11, and the holes on the rotating filter tube 27 are elongated holes. The right end of the washing integrated assembly 19 extends into the interior of the rotating filter tube 27. Please refer to [link / reference]. Figure 1 A drive hub 3 is provided on the top surface of the rinsing isolation housing 11. The drive hub 3 includes a drive motor 31, which is fixedly installed on the top surface of the rinsing isolation housing 11. The drive motor 31 is connected to the rotating filter tube 27 for transmission. Please refer to [link to relevant documentation]. Figure 2 The interior of the shower enclosure 11 is equipped with a reciprocating mechanism 4. Please refer to [link / reference]. Figure 4 The reciprocating mechanism 4 includes a reciprocating block 42, which is slidably connected to the top surface of the inner cavity of the rinsing isolation housing 11. (See also...) Figure 2 The interior of the rinsing isolation housing 11 is equipped with a synchronous alignment mechanism 5. Please refer to [link / reference]. Figure 5 The synchronization alignment mechanism 5 includes a synchronization alignment ring 52, which is connected to the reciprocating shift block 42. The synchronization alignment ring 52 is sleeved on the outside of the rotating filter tube 27. Please refer to [link to relevant documentation]. Figure 8 The synchronous alignment ring 52 is provided with a hammering and plugging mechanism 6 inside. The hammering and plugging mechanism 6 includes multiple hammering and plugging chambers 61. The hammering and plugging chambers 61 are opened inside the synchronous alignment ring 52. The synchronous alignment ring 52 is provided with a powerful plugging mechanism 7 inside. The powerful plugging mechanism 7 includes a powerful plugging guide hole 73. The powerful plugging guide hole 73 is opened on the top surface of the inner cavity of the hammering and plugging chamber 61.

[0033] Please see Figure 3 The stirring mechanism 2 also includes a large supporting ring 21, please refer to [link / reference]. Figure 2 Two large supporting rings 21 are fixedly connected to the inner wall of the rinsing isolation shell 11. The two large supporting rings 21 are located at the left and right ends of the rinsing isolation shell 11, respectively. (See also...) Figure 3 Four centering clamping wheels 22 are fixedly connected to the inner wall of the large supporting ring 21. The four centering clamping wheels 22 are evenly distributed on the inner wall of the large supporting ring 21. Centering clamping rings 23 are movably clamped between the four centering clamping wheels 22. A solid waste discharge pipe 24 is fixedly inserted into the inside of one centering clamping ring 23. Please refer to [link / reference]. Figure 2Another centering ring 23 has a soil inlet pipe 25 fixedly inserted inside. The rotating filter pipe 27 is fixedly connected between the solid waste discharge pipe 24 and the soil inlet pipe 25. The soil inlet pipe 25 is movably sleeved with a connecting compensation pipe 26 located at its right end. The connecting compensation pipe 26 is fixedly connected to the right side of the inner cavity of the rinsing isolation shell 11. The end of the feeding bend pipe 12 passes through the connecting compensation pipe 26 and extends into the interior of the soil inlet pipe 25. Pushing blades 28 are fixedly connected to the inner walls of the solid waste discharge pipe 24, the soil inlet pipe 25, and the rotating filter pipe 27. The rotating bearing stirring mechanism 2 can make the soil roll and play a stirring role.

[0034] Please see Figure 1 The drive hub 3 also includes a drive pulley 32, which is fixedly sleeved on the end of the output shaft of the drive motor 31. A transmission belt 33 is sleeved on the outside of the drive pulley 32. Please refer to [link to relevant documentation]. Figure 2 The bottom end of the transmission belt 33 extends downward into the interior of the rinsing isolation shell 11 and is fitted with a driven pulley 34. The driven pulley 34 is fixedly fitted onto the outside of the solid waste discharge end pipe 24 and is used to drive the bearing stirring mechanism 2 to rotate. It can also drive the reciprocating retraction mechanism 4 to move.

[0035] Please see Figure 4 The reciprocating mechanism 4 also includes a reciprocating slide rod 41, which is fixedly connected between two large bearing rings 21. A reciprocating block 42 is slidably sleeved on the outside of the reciprocating slide rod 41. A reciprocating displacement screw 43 is movably inserted into the reciprocating displacement block 42, and the reciprocating displacement screw 43 is threadedly engaged with the reciprocating displacement block 42. The right end of the reciprocating displacement screw 43 is movably inserted into the left side of the large bearing ring 21 at the right end of the rinsing isolation shell 11, and the left end of the reciprocating displacement screw 43 passes through the large bearing ring 21 at the left end of the rinsing isolation shell 11 and is fixedly sleeved with a conversion pulley 44. Please refer to [link / reference]. Figure 2 The conversion pulley 44 is connected to the transmission belt 33 for driving the synchronous alignment mechanism 5 to move back and forth.

[0036] Please see Figure 5 The synchronization alignment mechanism 5 also includes a synchronization alignment U-shaped rod 51, please refer to [link / reference]. Figure 2 One end of the synchronous alignment U-shaped rod 51 is fixedly connected to the surface of the solid waste discharge pipe 24, and the other end is fixedly connected to the surface of the soil inlet pipe 25. There are multiple synchronous alignment U-shaped rods 51, evenly distributed on the surfaces of the solid waste discharge pipe 24 and the soil inlet pipe 25. A synchronous alignment ring 52 is slidably sleeved on the outside of the synchronous alignment U-shaped rod 51. (See also...) Figure 8The synchronous alignment ring 52 is fixedly sleeved with a synchronous alignment convex ring 53. The synchronous alignment mechanism 5 also includes a synchronous alignment base ring 54, which is movably sleeved on the outside of the synchronous alignment ring 52. The synchronous alignment base ring 54 is fixedly connected to the reciprocating moving block 42. A synchronous alignment annular groove 55 is opened on the inner side of the synchronous alignment base ring 54. The synchronous alignment convex ring 53 is slidably inserted into the inside of the synchronous alignment annular groove 55, so that the hammering and plugging mechanism 6 can act synchronously with the bearing stirring mechanism 2. This ensures that the hammering and plugging mechanism 6 is aligned with the narrow hole on the rotating filter tube 27. It is used to move the hammering and plugging mechanism 6 back and forth to perform a comprehensive plugging operation on the rotating filter tube 27, ensuring that the rotating filter tube 27 has good overall permeability, which helps to increase the efficiency and effect of washing and screening.

[0037] Please see Figure 8 The hammering and plugging mechanism 6 also includes a hammering and plugging expansion groove 62, which is formed on the top surface of the inner cavity of the hammering and plugging chamber 61. A hammering and plugging buffer spring 63 is fixedly connected to the top surface of the inner cavity of the hammering and plugging expansion groove 62. The bottom end of the hammering and plugging buffer spring 63 extends downward into the interior of the hammering and plugging chamber 61 and is fixedly connected to the hammering and plugging counterweight slide plate 64. The hammering and plugging counterweight slide plate 64 is slidably inserted into the interior of the hammering and plugging chamber 61. A hammering and plugging counterweight strip 65 is fixedly connected to the bottom surface of the hammering and plugging counterweight slide plate 64. The bottom end of the hammering and plugging counterweight strip 65 extends downward into the inner side of the synchronization alignment ring 52 and is fixedly connected to an isosceles trapezoidal hammering and plugging head 6. 6. The isosceles trapezoidal hammer-shaped plug 66 is designed so that the inner wall of the narrow hole can exert an upward thrust on the isosceles trapezoidal hammer-shaped plug 66 during its lateral movement. The isosceles trapezoidal hammer-shaped plug 66 is adapted to the narrow hole on the rotating filter tube 27, and promptly removes the blockage in the narrow hole, ensuring that the rotating filter tube 27 has excellent permeability. This helps to increase washing efficiency and quality, and it does not require periodic shutdown and cleaning of blockages, so the washing process will not be interrupted. The washing efficiency is high, and it does not require manual entry and cleaning of blockages, which is more time-saving and labor-saving. The washing efficiency is even higher, which improves the practicality of the in-situ stirring and rinsing device for removing heavy metals from soil.

[0038] Please see Figure 8 The powerful plugging mechanism 7 also includes a powerful plugging arc plate 71, which is fixedly connected to the inner wall of the synchronous alignment annular groove 55 and located at its top. Please refer to [link to relevant documentation]. Figure 6 Both ends of the powerful plugging arc plate 71 are provided with powerful plugging transition surfaces 72. Please refer to [link / reference]. Figure 8The powerful plugging mechanism 7 also includes a powerful plugging rod 74, which is slidably inserted into the powerful plugging guide hole 73. The top end of the powerful plugging rod 74 is adapted to the surface of the powerful plugging arc plate 71 and the powerful plugging transition surface 72, and the bottom end of the powerful plugging rod 74 is connected to the surface of the hammer-punching counterweight slide plate 64. This applies a radial thrust to the hammer-punching mechanism 6, increasing the thrust of the hammer-punching mechanism 6 on the blockage, which helps to increase the plugging capacity so as to remove the firmly blocked blockage. This further increases the efficiency and effect of washing and improves the practicality of the ex-situ stirring and rinsing device for removing heavy metals from soil.

[0039] Please see Figure 9 The powerful plugging rod 74 also includes a powerful plugging column 741, which is slidably inserted into the powerful plugging guide hole 73. A rolling steel ball 742 is movably embedded on the top surface of the powerful plugging column 741. A powerful plugging chamber 743 is opened inside the powerful plugging column 741. A powerful plugging spring 744 is fixedly connected to the top surface of the inner cavity of the powerful plugging chamber 743. A powerful plugging piston 745 is fixedly connected to the bottom end of the powerful plugging spring 744. The powerful plugging piston 745 is slidably inserted into the inside of the powerful plugging chamber 743. A powerful plugging shortening rod 746 is fixedly connected to the bottom surface of the powerful plugging piston 745. The bottom end of the powerful plugging shortening rod 746 is fixedly connected to the top surface of the hammer-punching counterweight slide plate 64, so that the isosceles trapezoidal hammer-punching head 66 can retract upward during the lateral movement, thereby ensuring that the hammer-punching mechanism 6 can move laterally.

[0040] Working principle:

[0041] First, the drive motor 31 is turned on. Then, the drive motor 31 drives the drive pulley 32 to rotate. Next, the drive pulley 32 drives the transmission belt 33 to rotate. Then, the transmission belt 33 drives the driven pulley 34 to rotate. Then, the driven pulley 34 drives the solid waste discharge pipe 24 to rotate. Next, the solid waste discharge pipe 24 drives the rotating filter pipe 27 to rotate. Then, the rotating filter pipe 27 drives the soil inlet pipe 25 to rotate. Then, the solid waste discharge pipe 24 and the soil inlet pipe 25 drive the synchronous alignment U-shaped rod 51 to rotate. Next, the synchronous alignment U-shaped rod 51 drives the synchronous alignment ring 52 to rotate. Then, the synchronous alignment ring 52 drives the synchronous alignment convex ring 53 to rotate. The synchronous alignment convex ring 53 rotates inside the synchronous alignment annular groove 55. The synchronous alignment ring 52 rotates synchronously with the hammer-punching mechanism 6. Then, the end face of the isosceles trapezoidal hammer-punching head 66 gradually tilts downwards. Subsequently, the isosceles trapezoidal hammer-punching head 66, the hammer-punching counterweight strip 65, and the hammer-punching counterweight slide plate 64, under their own weight and the elastic force of the hammer-punching buffer spring 63, radially approach the rotating filter tube 27. Then, the isosceles trapezoidal hammer-punching head 66 radially inserts into the narrow hole it is aligned with. When there is blockage in the narrow hole, the isosceles trapezoidal hammer-punching head 66 will push out the blockage during insertion, achieving the punching effect. Next, the synchronous alignment ring 52 and the synchronous alignment convex ring 53 rotate with the powerful punching rod 74 through the powerful punching guide hole 73, followed by the rolling steel ball 7. 42 slides onto the surface of the powerful plugging transition surface 72 and slides towards the inner side of the powerful plugging arc plate 71. Then, the surface of the powerful plugging transition surface 72 applies a radial thrust to the rolling steel ball 742. Next, the rolling steel ball 742 carries the powerful plugging column 741 radially closer to the rotating filter tube 27. Then, the powerful plugging column 741 squeezes the powerful plugging spring 744, and then the elastic potential energy of the powerful plugging spring 744 increases. Then, the powerful plugging spring 744 applies radial pressure to the powerful plugging piston 745. Then, the powerful plugging piston 745 applies a radial thrust to the powerful plugging shortening rod 746. Then, the powerful plugging shortening rod 746 applies a radial thrust to the hammer-punching counterweight slide plate 64. Then, the hammer-punching counterweight slide plate 64, through hammering, pushes... The counterweight strip 65 applies radial thrust to the isosceles trapezoidal hammer-shaped plugging head 66, which then increases the thrust of the isosceles trapezoidal hammer-shaped plugging head 66 on the blockage, effectively removing stubborn blockages. The rolling steel ball 742 then slides onto the inner surface of the powerful plugging arc plate 71. Following the rotation of the synchronization ring 52, the rolling steel ball 742 slides from the inner surface of the powerful plugging arc plate 71 to the surface of another powerful plugging transition surface 72. The powerful plugging spring 744 then elastically extends, and the powerful plugging column 741 moves radially away from the rotating filter tube 27. The rolling steel ball 742 then detaches from the surface of the powerful plugging transition surface 72, and the end face of the isosceles trapezoidal hammer-shaped plugging head 66 changes from inclined downwards to inclined upwards.Then, the isosceles trapezoidal hammer-punching plug 66, the hammer-punching counterweight strip 65, and the hammer-punching counterweight slide plate 64 move radially away from the rotating filter tube 27 under their own weight. Next, the isosceles trapezoidal hammer-punching plug 66 is pulled out of the corresponding narrow hole, allowing the narrow hole to function normally. Then, the synchronous alignment ring 52 drives the hammer-punching mechanism 6 to continue rotating, achieving the plugging work of the narrow hole as described above. Then, the transmission belt 33 drives the conversion pulley 44 to rotate, which in turn drives the displacement reciprocating screw 43 to rotate. Next, the reciprocating displacement block 42 moves back and forth under the action of its threaded engagement with the displacement reciprocating screw 43. Then, the inner wall of the narrow hole contacts the inclined surface of the isosceles trapezoidal hammer-punching plug 66 and applies pressure to it, causing the isosceles trapezoidal hammer-punching plug 66 to experience an upward thrust. Then, the isosceles trapezoidal hammer... The plugging head 66 moves slightly upward and slides out of the narrow hole. Then, an isosceles trapezoidal hammer strikes the plugging head 66, causing it to slide to the right or left into the adjacent narrow hole and plug it. Soil is then added to the soil replenishment hopper 13. The soil then enters the soil inlet pipe 25 and the rotating filter pipe 27 through the feed bend 12. Next, a cleaning agent is sprayed onto the soil through the washing integrated assembly 19. The cleaning agent mixes with the soil to form muddy water, which passes through the narrow hole into the muddy water collection hopper 15 and is discharged through the muddy water discharge pipe 16. The particles are then trapped inside the rotating filter pipe 27. The rotating filter pipe 27 and the solid waste discharge pipe 24 rotate, along with the pusher blades 28. The pusher blades 28 then push the particles to the left, causing them to fall from the left end of the solid waste discharge pipe 24 and be discharged from the solid waste discharge nozzle 17.

[0042] The above description is merely a preferred embodiment of the present invention; however, the scope of protection of the present invention is not limited thereto; any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in the present invention, based on the technical solution and its improved concept, should be covered within the scope of protection of the present invention.

Claims

1. An ex-situ stirred leaching device for removing heavy metals from soil, comprising a soil leaching mechanism, characterized in that: The soil washing mechanism includes a washing isolation shell. A feeding bend is fixedly connected to the top of the washing isolation shell on its right side, and a soil replenishment hopper is fixedly connected to the other end of the feeding bend. A lifting support leg is fixedly connected to the bottom of the washing isolation shell, and a mud-water collection hopper is fixedly connected to the bottom of the washing isolation shell. A mud-water discharge pipe is fixedly connected to the bottom of the mud-water collection hopper. A solid waste discharge nozzle is fixedly connected to the bottom of the washing isolation shell on its left side, and a solid waste discharge hole is provided on the left side of the washing isolation shell, communicating with the solid waste discharge nozzle. A washing integrated assembly is installed on the left side of the washing isolation shell. A carrying and stirring mechanism is provided inside the washing isolation shell, including a rotating filter tube installed inside the washing isolation shell. The rotating filter tube has a narrow, elongated hole, and the right end of the washing integrated assembly extends into the interior of the rotating filter tube. The top surface of the rinsing isolation shell is provided with a drive center, which includes a drive motor. The drive motor is fixedly installed on the top surface of the rinsing isolation shell and is connected to the rotating filter tube. The interior of the rinsing isolation shell is provided with a reciprocating mechanism, which includes a reciprocating block. The reciprocating block is slidably connected to the top surface of the inner cavity of the rinsing isolation shell. The interior of the rinsing isolation shell is provided with a synchronous alignment mechanism, which includes a synchronous alignment ring. The synchronous alignment ring is connected to the reciprocating block and is sleeved on the outside of the rotating filter tube. The interior of the synchronous alignment ring is provided with a hammering and plugging mechanism, which includes multiple hammering and plugging chambers. The hammering and plugging chambers are opened inside the synchronous alignment ring. The interior of the synchronous alignment ring is provided with a powerful plugging mechanism, which includes a powerful plugging guide hole. The powerful plugging guide hole is opened on the top surface of the inner cavity of the hammering and plugging chamber. The carrying and mixing mechanism also includes a large carrying ring, which is fixedly connected to the inner wall of the rinsing isolation shell. There are two large carrying rings, which are located at the left and right ends of the rinsing isolation shell, respectively. Four centering clamping wheels are fixedly connected to the inner wall of the large carrying ring. The four centering clamping wheels are evenly distributed on the inner wall of the large carrying ring. The centering clamping ring is movably clamped between the four centering clamping wheels. A solid waste discharge end pipe is fixedly inserted into the inside of one centering clamping ring, and a soil delivery end pipe is fixedly inserted into the inside of the other centering clamping ring. The synchronization alignment mechanism also includes a synchronization alignment U-shaped rod. One end of the synchronization alignment U-shaped rod is fixedly connected to the surface of the solid waste discharge pipe, and the other end of the synchronization alignment U-shaped rod is fixedly connected to the surface of the soil inlet pipe. There are multiple synchronization alignment U-shaped rods, which are evenly distributed on the surfaces of the solid waste discharge pipe and the soil inlet pipe. The synchronization alignment ring is slidably sleeved on the outside of the synchronization alignment U-shaped rod. A synchronization alignment convex ring is fixedly sleeved on the outside of the synchronization alignment ring. The synchronization alignment mechanism also includes a synchronization alignment base ring, which is movably sleeved on the outside of the synchronization alignment ring. The synchronization alignment base ring is fixedly connected to the reciprocating moving block. A synchronization alignment annular groove is opened on the inner side of the synchronization alignment base ring, and the synchronization alignment convex ring is slidably inserted into the inside of the synchronization alignment annular groove. The hammering and plugging mechanism also includes a hammering and plugging expansion groove, which is opened on the top surface of the inner cavity of the hammering and plugging chamber. A hammering and plugging buffer spring is fixedly connected to the top surface of the inner cavity of the hammering and plugging expansion groove. The bottom end of the hammering and plugging buffer spring extends downward into the interior of the hammering and plugging chamber and is fixedly connected to the hammering and plugging counterweight slide plate. The hammering and plugging counterweight slide plate is slidably inserted into the interior of the hammering and plugging chamber. A hammering and plugging counterweight strip is fixedly connected to the bottom surface of the hammering and plugging counterweight slide plate. The bottom end of the hammering and plugging counterweight strip extends downward into the inner side of the synchronous alignment ring and is fixedly connected to an isosceles trapezoidal hammering and plugging head. The isosceles trapezoidal hammering and plugging head is adapted to the narrow hole on the rotating filter tube. The powerful plugging mechanism also includes a powerful plugging arc plate, which is fixedly connected to the inner wall of the synchronous alignment annular groove and located at its top. Both ends of the powerful plugging arc plate are provided with powerful plugging transition surfaces. The powerful plugging mechanism also includes a powerful plugging rod, which is slidably inserted into the inside of the powerful plugging guide hole. The top end of the powerful plugging rod is adapted to the surface of the powerful plugging arc plate and the powerful plugging transition surface, and the bottom end of the powerful plugging rod is connected to the surface of the hammer-punching counterweight slide plate.

2. The ex-situ stirring and leaching device for removing heavy metals from soil according to claim 1, characterized in that: The rotating filter pipe is fixedly connected between the solid waste discharge end pipe and the soil inlet end pipe. The soil inlet end pipe is movably sleeved with a connecting compensation pipe located at its right end. The connecting compensation pipe is fixedly connected to the right side of the inner cavity of the rinsing isolation shell. The end of the feeding bend passes through the connecting compensation pipe and extends into the interior of the soil inlet end pipe. Pushing blades are fixedly connected to the inner walls of the solid waste discharge end pipe, the soil inlet end pipe, and the rotating filter pipe.

3. The ex-situ stirring and leaching device for removing heavy metals from soil according to claim 2, characterized in that: The drive hub also includes a drive pulley, which is fixedly sleeved on the end of the output shaft of the drive motor. A transmission belt is sleeved on the outside of the drive pulley, and the bottom end of the transmission belt extends downward into the interior of the rinsing isolation shell and is sleeved with a driven pulley. The driven pulley is fixedly sleeved on the outside of the solid waste discharge pipe.

4. The ex-situ stirring and leaching device for removing heavy metals from soil according to claim 3, characterized in that: The reciprocating mechanism also includes a reciprocating slide rod, which is fixedly connected between two large bearing rings. A reciprocating block is slidably sleeved on the outside of the reciprocating slide rod. A displacement reciprocating screw is movably inserted into the reciprocating block, and the displacement reciprocating screw is threadedly engaged with the reciprocating block. The right end of the displacement reciprocating screw is movably inserted into the left side of the large bearing ring at the right end of the rinsing isolation shell. The left end of the displacement reciprocating screw passes through the large bearing ring at the left end of the rinsing isolation shell and is fixedly sleeved with a conversion pulley. The conversion pulley is connected to the transmission belt.

5. The ex-situ stirring and leaching device for removing heavy metals from soil according to claim 1, characterized in that: The powerful plugging rod also includes a powerful plugging column, which is slidably inserted into the powerful plugging guide hole. A rolling steel ball is movably embedded on the top surface of the powerful plugging column. A powerful plugging chamber is opened inside the powerful plugging column. A powerful plugging spring is fixedly connected to the top surface of the powerful plugging chamber. A powerful plugging piston is fixedly connected to the bottom end of the powerful plugging spring. The powerful plugging piston is slidably inserted into the powerful plugging chamber. A powerful plugging shortening rod is fixedly connected to the bottom surface of the powerful plugging piston. The bottom end of the powerful plugging shortening rod is fixedly connected to the top surface of the hammer-driven plugging counterweight slide plate.

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