Wetland soil remediation device

Abstract

The utility model belongs to the technical field of soil remediation devices, and discloses a wetland soil remediation device which comprises a mounting frame, a stirring tank penetrating through the top of the mounting frame and fixed and a liquid inlet pipe fixed and communicated with the top of the stirring tank, a stirring mechanism and a discharging mechanism are arranged on the stirring tank, and a feeding mechanism is arranged on the mounting frame. The feeding mechanism comprises a screening assembly, the screening assembly comprises a screening box fixed to the top of the mounting frame, a screening barrel arranged on the inner wall of the side, away from the stirring tank, of the screening box and a feeding hopper fixed to the side wall of the side, away from the stirring tank, of the screening box, and the discharging end of the feeding hopper extends into the screening barrel. A plurality of through holes are formed in the side wall of the screening barrel in a penetrating mode. The feeding mechanism further comprises a conveying assembly and a feeding assembly. According to the soil remediation device, through the arrangement of the screening assembly, the content of water in soil is reduced, the risk that the remediation liquid is diluted by the water is reduced, and therefore the waste of the remediation liquid is reduced.

Description

Technical Field

[0001] This utility model relates to the field of soil remediation device technology, and in particular to a wetland soil remediation device. Background Technology

[0002] In the process of wetland soil remediation, a remediation solution (solidifying agent) needs to be put into the soil so that the remediation solution reacts with the heavy metals in the soil and removes the heavy metals, thereby achieving the purpose of soil remediation. In order to improve the remediation effect of the remediation solution, the remediation solution and the soil to be remediated are usually put into a mixing device for mixing.

[0003] A forestry wetland soil remediation device is disclosed in Chinese utility model patent with publication number CN210676340U, including a support, a mixing drum, and a mixer. The mixing drum is fixedly connected to the support, and the mixer is fixedly connected to the support with its lower end located inside the mixing drum. The forestry wetland soil remediation device also includes a mixing drum cover, a mixing drum sliding cover, and a soil discharge cylinder. The mixing drum cover is fixedly connected to the upper end of the mixing drum, the mixing drum sliding cover is slidably connected to the mixing drum cover, the soil discharge cylinder is fixedly connected to the lower end of the mixing drum, and the soil discharge device is located inside the soil discharge cylinder with its upper end rotatably connected to the lower end of the mixing drum.

[0004] In the current process of soil remediation, wetland soil is directly poured into a mixing drum and mixed with the remediation solution. However, some wetland soils contain a large amount of water, which dilutes the concentration of the remediation solution. Therefore, the amount of remediation solution needs to be increased to ensure the normal remediation effect, which will result in waste of the remediation solution. Utility Model Content

[0005] To address the aforementioned problems, this utility model provides a wetland soil remediation device.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a wetland soil remediation device, comprising an installation frame, a mixing tank that penetrates the top of the installation frame and is fixed therethrough, and an inlet pipe that is fixed to and connected to the top of the mixing tank. The inlet pipe is used to inject remediation liquid into the mixing tank. The mixing tank is provided with a mixing mechanism for mixing the remediation liquid and soil. The mixing tank is provided with a discharge mechanism for discharging the mixed soil and remediation liquid from the mixing tank. The installation frame is provided with a feeding mechanism, which includes a screening component. The screening component includes a screening box fixed to the top of the installation frame, a screening cylinder disposed on the inner wall of the screening box away from the mixing tank, and a feeding hopper fixed to the side wall of the screening box away from the mixing tank. The discharge end of the feeding hopper extends into the screening cylinder. Multiple through holes are provided through the side wall of the screening cylinder. The feeding mechanism also includes a conveying component for transporting soil in the screening cylinder and a feeding component for discharging the screened soil into the mixing tank.

[0007] By adopting the above technical solution, in the process of wetland soil remediation, the soil is first poured into the feed hopper. Since the discharge end of the feed hopper extends into the screening cylinder, the soil enters the screening cylinder from the feed hopper and is transported in the screening cylinder by the conveying component. During this process, the moisture in the soil flows into the screening box through the through holes. Then, the screened soil is discharged into the mixing tank through the feeding component. At the same time, the remediation liquid is injected into the mixing tank through the liquid inlet pipe. Then, the remediation liquid and soil are mixed by the mixing mechanism. Finally, the mixed soil and remediation liquid are discharged from the mixing tank by the discharge mechanism. The whole process removes moisture from the soil, reduces the risk of water diluting the remediation liquid, and thus reduces the waste of the remediation liquid.

[0008] Furthermore, the conveying assembly includes a rotating shaft rotatably mounted inside the screening cylinder, a spiral blade fixedly sleeved on the rotating shaft, a mounting plate fixed on the side wall of the screening box away from the mixing tank, a rotating motor fixed on the mounting plate, and a main rotating gear fixedly sleeved on the output end of the rotating motor. The rotating shaft passes through the side wall of the screening box away from the mixing tank and is rotatably connected. The conveying assembly also includes a driven rotating gear fixedly sleeved on the rotating shaft and meshing with the main rotating gear. The feeding assembly includes a connecting cylinder fixed on the inner wall of the screening box near the mixing tank and a feeding pipe fixed to the bottom of the connecting cylinder and communicating with the connecting cylinder. The end of the feeding pipe away from the connecting cylinder extends into the screening box. One end of the screening cylinder is rotatably connected to the end of the connecting cylinder away from the axis of the mixing tank. The end of the screening cylinder away from the axis of the mixing tank abuts against the inner wall of the screening box away from the axis of the mixing tank. The axis of the connecting cylinder, the axis of the rotating shaft, and the axis of the screening cylinder all coincide. The screening box is provided with a drive assembly for driving the screening cylinder to rotate in the opposite direction to the rotating shaft.

[0009] By adopting the above technical solution, after the rotating motor works, it drives the main rotating gear to rotate, thereby causing the driven rotating gear meshing with the main rotating gear, the rotating shaft fixed with the driven rotating gear, and the spiral blades fixed with the rotating shaft to rotate. This enables the soil to be transported from the screening cylinder to the connecting cylinder. During this process, the soil will be discharged into the mixing tank through the feeding pipe to ensure normal remediation work.

[0010] Furthermore, the drive assembly includes a drive rod rotatably mounted on the inner wall of the screening box on the side away from the mixing tank, a main drive gear fixedly sleeved on the drive rod, a driven gear fixedly sleeved on the screening cylinder and meshing with the main drive gear, and a drive motor fixed on the screening box and driving the drive rod to rotate.

[0011] By adopting the above technical solution, after the drive motor works, it drives the drive rod to rotate, thereby causing the main drive gear fixed to the drive rod, the driven gear meshing with the main drive gear, and the screening cylinder fixed to the driven gear to rotate. Since the rotation direction of the screening cylinder is opposite to the rotation direction of the rotating shaft, the speed at which the soil is transported in the screening cylinder is increased relative to the increase in the rotation speed of the rotating shaft.

[0012] Furthermore, a water pump is fixed to the side wall of the screening box, and a suction pipe is fixed and connected to the water inlet end of the water pump. The end of the suction pipe away from the water pump is fixed and connected to the side wall of the screening box. A drain pipe connected to the water outlet end of the water pump is fixed to the water outlet end. The cross-section of the bottom of the screening box is "V" shaped, and the suction end of the suction pipe is located at the junction of the "V" shape at the bottom of the screening box.

[0013] By adopting the above technical solution, after the water pump starts working, the suction pipe draws out the sewage from the screening box and enters the water pump through the water inlet. Finally, the sewage is discharged from the water pump through the water outlet and the sewage pipe, which avoids the situation where excessive water accumulation in the screening box affects soil screening and ensures normal soil screening.

[0014] Furthermore, a connecting frame is fixed on the inner wall of the screening box, and a cleaning brush parallel to the rotating shaft is fixed at one end of the connecting frame near the screening cylinder, with the bottom of the bristles of the cleaning brush abutting against the top of the screening cylinder.

[0015] By adopting the above technical solution, the cleaning brush cleans the side wall of the screening cylinder during the rotation of the screening cylinder, reducing the probability that the screening cylinder will affect the screening of soil due to soil clogging the through holes.

[0016] Furthermore, the stirring mechanism includes a stirring rod that passes through the top of the stirring tank and is rotatably connected to it, stirring blades fixed to the side wall of the stirring rod and located inside the stirring tank, a U-shaped frame fixed to the top of the stirring tank, a stirring motor fixed to the top of the U-shaped frame, a main stirring gear fixedly sleeved on the output end of the stirring motor, and a driven stirring gear fixedly sleeved on the stirring rod and meshing with the main stirring gear.

[0017] By adopting the above technical solution, after the mixing motor starts working, it drives the main mixing gear to rotate, thereby causing the driven mixing gear meshing with the main mixing gear, the mixing rod fixed to the driven mixing gear, and the mixing blade connected to the mixing rod to all rotate, so as to mix the soil and the remediation solution.

[0018] Furthermore, the stirring rod is a cylindrical structure, and the discharge mechanism includes a discharge pipe fixed to and connected to the bottom of the mixing tank, a sealing plug inserted into the inner wall of the discharge pipe, and a connecting rod fixed to the top of the sealing plug. The connecting rod passes through the interior of the stirring rod. The discharge mechanism also includes an electric hydraulic push rod fixed to the top of the U-shaped frame, and the push rod end of the electric hydraulic push rod is fixed to the upper end of the connecting rod.

[0019] By adopting the above technical solution, after the electric hydraulic push rod is working, it drives the push rod end of the electric hydraulic push rod to extend, thereby causing the connecting rod connected to the push rod end of the electric hydraulic push rod and the sealing plug connected to the connecting rod to descend until the sealing plug separates from the discharge pipe, so that the mixed soil and remediation liquid can be discharged from the mixing tank.

[0020] Furthermore, a protective box is fixed between the inner wall of the screening box away from the mixing tank and the connecting frame. The screening cylinder penetrates the side wall of the protective box near the mixing tank. The outer wall of the screening cylinder and the side wall of the protective box are sealed by a rotating shaft seal. The side walls on both sides of the protective box are attached and fixed to the inner walls on both sides of the screening box. The drive rod, the main drive gear, and the driven gear are all located inside the protective box. Multiple through holes are distributed on the screening cylinder between the connecting cylinder and the protective box.

[0021] By adopting the above technical solution, the protective box design prevents water from flowing into components such as the drive rod, main drive gear, and driven gear.

[0022] In summary, the present invention has the following beneficial effects: In this application, by setting the screening component, the moisture content in the soil is reduced, the risk of water diluting the remediation solution is reduced, thereby reducing the waste of the remediation solution. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0024] Figure 2 yes Figure 1 Cross-sectional structural diagram used to highlight the internal structure of the mixing tank and screening box;

[0025] Figure 3 This is a cross-sectional structural diagram of an embodiment of the present invention used to highlight the internal structure of the screening box;

[0026] Figure 4 This is a cross-sectional structural diagram of an embodiment of the present invention to highlight the feed tube;

[0027] Figure 5 yes Figure 2 Enlarged view of point A in the middle;

[0028] Figure 6 yes Figure 2 Enlarged diagram of point B in the middle.

[0029] In the diagram: 1. Mounting frame; 2. Mixing tank; 3. Liquid inlet pipe; 4. Mixing mechanism; 41. Mixing rod; 42. Mixing blade; 43. U-shaped frame; 44. Mixing motor; 45. Main mixing gear; 46. Slave mixing gear; 5. Discharge mechanism; 51. Discharge pipe; 52. Sealing plug; 53. Connecting rod; 54. Electro-hydraulic push rod; 6. Feeding mechanism; 61. Screening assembly; 611. Screening box; 612. Screening cylinder; 613. Feed hopper; 62. Conveying assembly Components; 621. Rotating shaft; 622. Spiral blade; 623. Mounting plate; 624. Rotating motor; 625. Main rotating gear; 626. Driven gear; 63. Feeding assembly; 631. Connecting cylinder; 632. Feeding pipe; 7. Drive assembly; 71. Drive rod; 72. Main drive gear; 73. Driven gear; 74. Drive motor; 8. Water pump; 9. Suction pipe; 10. Discharge pipe; 11. Connecting frame; 12. Cleaning brush; 13. Protective box. Detailed Implementation

[0030] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0031] like Figure 1-6 As shown in the figure, this application discloses a wetland soil remediation device, including a mounting frame 1, a mixing tank 2, an inlet pipe 3, a mixing mechanism 4, a discharge mechanism 5, and a drive assembly 7. The mixing tank 2 passes through the top of the mounting frame 1 and is fixed thereto. The inlet pipe 3 is fixed to and communicates with the top of the mixing tank 2, and is used to inject remediation fluid into the mixing tank 2.

[0032] A mixing mechanism 4 is mounted on the mixing tank 2 and is used to mix the remediation solution and soil. The mixing mechanism 4 includes a mixing rod 41, mixing blades 42, a U-shaped frame 43 fixed to the top of the mixing tank 2, a mixing motor 44, a main mixing gear 45, and a driven mixing gear 46. The mixing rod 41 passes through the top of the mixing tank 2 and is rotatably connected, and the mixing rod 41 has a cylindrical structure. The mixing blades 42 are fixed to the side wall of the mixing rod 41 and located inside the mixing tank 2. The U-shaped frame 43 is fixed to the top of the mixing tank 2. The mixing motor 44 is fixed to the top of the U-shaped frame 43. The main mixing gear 45 is fixedly mounted on the output end of the mixing motor 44, and the driven mixing gear 46 is fixedly mounted on the mixing rod 41 and meshes with the main mixing gear 45.

[0033] The discharge mechanism 5 is installed on the mixing tank 2 and is used to discharge the mixed soil and remediation liquid from the mixing tank 2. The discharge mechanism 5 includes a discharge pipe 51, a sealing plug 52, a connecting rod 53, and an electro-hydraulic push rod 54. The discharge pipe 51 is fixed to and connected to the bottom of the mixing tank 2. The sealing plug 52 is inserted into the inner wall of the discharge pipe 51. The connecting rod 53 is fixed to the top of the sealing plug 52 and passes through the interior of the mixing rod 41. The electro-hydraulic push rod 54 is fixed to the top of the U-shaped frame 43, and the push rod end of the electro-hydraulic push rod 54 is fixed to the upper end of the connecting rod 53.

[0034] The feeding mechanism 6 includes a screening component 61, a conveying component 62, and a feeding component 63. The screening component 61 includes a screening box 611, a screening cylinder 612, and a feed hopper 613. The screening box 611 is fixed to the top of the mounting frame 1. The screening cylinder 612 is disposed on the inner wall of the screening box 611 on the side away from the mixing tank 2, and the end of the screening cylinder 612 away from the axis of the mixing tank 2 abuts against the inner wall of the screening box 611 on the side away from the axis of the mixing tank 2. Multiple through holes are provided through the side wall of the screening cylinder 612. The feed hopper 613 is fixed to the side wall of the screening box 611 on the side away from the mixing tank 2, and the discharge end of the feed hopper 613 extends into the screening cylinder 612.

[0035] The conveying assembly 62 is used to transport soil within the screening cylinder 612. The conveying assembly 62 includes a rotating shaft 621, a spiral blade 622, a mounting plate 623, a rotating motor 624, a main rotating gear 625, and a driven rotating gear 626. The rotating shaft 621 is rotatably mounted inside the screening cylinder 612, passing through and rotatably connecting to the side wall of the screening box 611 away from the mixing tank 2. The spiral blade 622 is fixedly sleeved on the rotating shaft 621. The mounting plate 623 is fixedly mounted on the side wall of the screening box 611 away from the mixing tank 2, and the rotating motor 624 is fixedly mounted on the mounting plate 623. The main rotating gear 625 is fixedly sleeved on the output end of the rotating motor 624, and the driven rotating gear 626 is fixedly sleeved on the rotating shaft 621 and meshes with the main rotating gear 625.

[0036] The feeding assembly 63 is used to discharge the screened soil into the mixing tank 2. The feeding assembly 63 includes a connecting cylinder 631 and a feeding pipe 632. The connecting cylinder 631 is fixed to the inner wall of the screening box 611 near the mixing tank 2. The feeding pipe 632 is fixed to the bottom of the connecting cylinder 631 and communicates with the connecting cylinder 631. The end of the feeding pipe 632 away from the connecting cylinder 631 extends into the screening box 611. One end of the screening cylinder 632 is rotatably connected to the end of the connecting cylinder 631 away from the axis of the mixing tank 2. The axis of the connecting cylinder 631, the axis of the rotating shaft 621, and the axis of the screening cylinder 612 all coincide.

[0037] In the process of wetland soil remediation, the soil is first poured into the feed hopper 613. Since the discharge end of the feed hopper 613 extends into the screening cylinder 612, the soil will enter the screening cylinder 612 from the feed hopper 613. At this time, the rotating motor 624 drives the main rotating gear 625 to rotate, thereby causing the driven rotating gear 626 meshing with the main rotating gear 625, the rotating shaft 621 fixed with the driven rotating gear 626, and the spiral blade 622 fixed with the rotating shaft 621 to all rotate. This transports the soil from the screening cylinder 612 to the connecting cylinder 631. During this process, the water in the soil will flow into the screening box 611 through the through hole. Then, the screened soil will be discharged into the mixing tank 2 through the feeding component 63. At the same time, the remediation liquid is injected into the mixing tank 2 through the liquid inlet pipe 3, followed by mixing. After the motor 44 starts working, it drives the main stirring gear 45 to rotate, which in turn causes the driven stirring gear 46 meshing with the main stirring gear 45, the stirring rod 41 fixed to the driven stirring gear 46, and the stirring blade 42 connected to the stirring rod 41 to rotate. This mixes the soil and the remediation solution. After the soil and the remediation solution are mixed, the electric hydraulic push rod 54 starts working, which causes the push rod end of the electric hydraulic push rod 54 to extend. This causes the connecting rod 53 connected to the push rod end of the electric hydraulic push rod 54 and the sealing plug 52 connected to the connecting rod 53 to descend until the sealing plug 52 separates from the discharge pipe 51. This allows the mixed soil and remediation solution to be discharged from the mixing tank 2. The entire process screens the water in the soil, reducing the risk of water diluting the remediation solution and thus reducing the waste of the remediation solution.

[0038] The drive assembly 7 is mounted on the screening box 611 and is used to drive the screening cylinder 612 to rotate in the opposite direction to the rotating shaft 621. The drive assembly 7 includes a drive rod 71, a main drive gear 72, a driven gear 73, and a drive motor 74. The drive rod 71 is rotatably mounted on the inner wall of the screening box 611 on the side away from the mixing tank 2. The main drive gear 72 is fixedly sleeved on the drive rod 71, the driven gear 73 is fixedly sleeved on the screening cylinder 612 and meshes with the main drive gear 72, and the drive motor 74 is fixed on the screening box 611 and drives the drive rod 71 to rotate.

[0039] After the drive motor 74 starts working, it drives the drive rod 71 to rotate, which causes the main drive gear 72 fixed to the drive rod 71, the driven gear 73 meshing with the main drive gear 72, and the screening cylinder 612 fixed to the driven gear 73 to all rotate. Since the rotation direction of the screening cylinder 612 is opposite to that of the rotating shaft 621, the speed at which the soil is transported in the screening cylinder 612 is increased relative to the increase in the rotation speed of the rotating shaft 621.

[0040] A connecting frame 11 is fixed to the inner wall of the screening box 611. A cleaning brush 12, parallel to the rotating shaft 621, is fixed to one end of the connecting frame 11 near the screening cylinder 612. The bottom of the bristles of the cleaning brush 12 is pressed against the top of the screening cylinder 612. During the rotation of the screening cylinder 612, the cleaning brush 12 cleans the side wall of the screening cylinder 612, reducing the probability that soil blockage of the through-holes will affect the screening of soil by the screening cylinder 612.

[0041] A water pump 8 is fixed to the side wall of the screening box 611. A suction pipe 9 is fixed to and connected to the inlet end of the water pump 8. The end of the suction pipe 9 furthest from the water pump 8 is fixed to and connected to the side wall of the screening box 611. A drain pipe 10, connected to the outlet end of the water pump 8, is fixed to the outlet end of the water pump 8. The bottom cross-section of the screening box 611 is V-shaped, and the suction end of the suction pipe 9 is located at the junction of the V-shape at the bottom of the screening box 611. After the water pump 8 operates, the suction pipe 9 draws out the wastewater from the screening box 611, which then enters the water pump 8 through its inlet end and is finally discharged from the water pump 8 through its outlet end and the drain pipe 10. This prevents excessive water accumulation in the screening box 611 from affecting soil screening and ensures normal soil screening.

[0042] A protective box 13 is fixed between the inner wall of the screening box 611 away from the mixing tank 2 and the connecting frame 11. The screening cylinder 612 penetrates the side wall of the protective box 13 near the mixing tank 2. The outer wall of the screening cylinder 612 and the side wall of the protective box 13 are sealed by a rotary shaft seal. The side walls on both sides of the protective box 13 are fitted and fixed to the inner walls on both sides of the screening box 611. The drive rod 71, the main drive gear 72, and the driven gear 73 are all located inside the protective box 13. Multiple through holes are distributed on the screening cylinder 612 between the connecting cylinder 631 and the protective box 13. The protective box 13 prevents water from flowing into components such as the drive rod 71, the main drive gear 72, and the driven gear 73.

[0043] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A wetland soil remediation device, comprising a mounting frame (1), a mixing tank (2) penetrating the top of the mounting frame (1) and fixed therethrough, and an inlet pipe (3) fixed to and connected to the top of the mixing tank (2), wherein the inlet pipe (3) is used to inject remediation liquid into the mixing tank (2), the mixing tank (2) is provided with a mixing mechanism (4) for mixing the remediation liquid and soil, and the mixing tank (2) is provided with a discharge mechanism (5) for discharging the mixed soil and remediation liquid from the mixing tank (2), characterized in that: The mounting frame (1) is provided with a feeding mechanism (6), which includes a screening component (61). The screening component (61) includes a screening box (611) fixed to the top of the mounting frame (1), a screening cylinder (612) disposed on the inner wall of the screening box (611) away from the mixing tank (2), and a feed hopper (613) fixed on the side wall of the screening box (611) away from the mixing tank (2). The discharge end of the feed hopper (613) extends into the screening cylinder (612). Multiple through holes are provided through the side wall of the screening cylinder (612). The feeding mechanism (6) also includes a conveying component (62) for transporting soil in the screening cylinder (612) and a feeding component (63) for discharging the screened soil into the mixing tank (2).

2. The wetland soil remediation device according to claim 1, characterized in that: The conveying assembly (62) includes a rotating shaft (621) rotatably mounted inside the screening cylinder (612), a spiral blade (622) fixedly sleeved on the rotating shaft (621), a mounting plate (623) fixed on the side wall of the screening box (611) away from the mixing tank (2), a rotating motor (624) fixed on the mounting plate (623), and a main rotating gear (625) fixedly sleeved on the output end of the rotating motor (624). The rotating shaft (621) passes through the side wall of the screening box (611) away from the mixing tank (2) and is rotatably connected. The conveying assembly (62) also includes a driven rotating gear (626) fixedly sleeved on the rotating shaft (621) and meshing with the main rotating gear (625). The feeding assembly (63) includes a feeding assembly fixed to the screening box (611) near the mixing tank (2). The inner wall of the screen box (611) has a connecting cylinder (631) on one side and a feeding pipe (632) fixed to the bottom of the connecting cylinder (631) and communicating with the connecting cylinder (631). The end of the feeding pipe (632) away from the connecting cylinder (631) extends into the screen box (611). One end of the screen cylinder (612) is rotatably connected to the end of the connecting cylinder (631) away from the axis of the mixing tank (2). The end of the screen cylinder (612) away from the axis of the mixing tank (2) abuts against the inner wall of the screen box (611) on the side away from the axis of the mixing tank (2). The axis of the connecting cylinder (631), the axis of the rotating shaft (621) and the axis of the screen cylinder (612) are all coincident. The screen box (611) is provided with a drive assembly (7) for driving the screen cylinder (612) to rotate in the opposite direction to the rotating shaft (621).

3. The wetland soil remediation device according to claim 2, characterized in that: The drive assembly (7) includes a drive rod (71) rotatably mounted on the inner wall of the screening box (611) on the side away from the mixing tank (2), a main drive gear (72) fixedly sleeved on the drive rod (71), a driven gear (73) fixedly sleeved on the screening cylinder (612) and meshing with the main drive gear (72), and a drive motor (74) fixed on the screening box (611) and driving the drive rod (71) to rotate.

4. The wetland soil remediation device according to claim 1, characterized in that: A water pump (8) is fixed on the side wall of the screening box (611). The water inlet end of the water pump (8) is fixed and connected to a suction pipe (9). The end of the suction pipe (9) away from the water pump (8) is fixed and connected to the side wall of the screening box (611). The water outlet end of the water pump (8) is fixed with a drain pipe (10) connected to the water outlet end of the water pump (8). The cross-section of the bottom of the screening box (611) is "V" shaped. The suction end of the suction pipe (9) is located at the junction of the "V" shape at the bottom of the screening box (611).

5. The wetland soil remediation device according to claim 1, characterized in that: A connecting frame (11) is fixed on the inner wall of the screening box (611). A cleaning brush (12) parallel to the rotating shaft (621) is fixed at one end of the connecting frame (11) near the screening cylinder (612). The bottom of the bristles of the cleaning brush (12) is pressed against the top of the screening cylinder (612).

6. The wetland soil remediation device according to claim 1, characterized in that: The stirring mechanism (4) includes a stirring rod (41) that passes through the top of the stirring tank (2) and is rotatably connected to it, a stirring blade (42) fixed on the side wall of the stirring rod (41) and located inside the stirring tank (2), a U-shaped frame (43) fixed to the top of the stirring tank (2), a stirring motor (44) fixed to the top of the U-shaped frame (43), a main stirring gear (45) fixedly sleeved on the output end of the stirring motor (44), and a driven stirring gear (46) fixedly sleeved on the stirring rod (41) and meshing with the main stirring gear (45).

7. A wetland soil remediation device according to claim 6, characterized in that: The stirring rod (41) is a cylindrical structure. The discharge mechanism (5) includes a discharge pipe (51) fixed to and connected to the bottom of the mixing tank (2), a sealing plug (52) inserted into the inner wall of the discharge pipe (51), and a connecting rod (53) fixed to the top of the sealing plug (52). The connecting rod (53) passes through the interior of the stirring rod (41). The discharge mechanism (5) also includes an electric hydraulic push rod (54) fixed to the top of the U-shaped frame (43). The push rod end of the electric hydraulic push rod (54) is fixed to the upper end of the connecting rod (53).

8. A wetland soil remediation device according to claim 3, characterized in that: A protective box (13) is fixed between the inner wall of the screening box (611) away from the mixing tank (2) and the connecting frame (11). The screening cylinder (612) penetrates the side wall of the protective box (13) near the mixing tank (2). The outer wall of the screening cylinder (612) and the side wall of the protective box (13) are sealed by a rotating shaft seal. The side walls on both sides of the protective box (13) are attached and fixed to the inner walls on both sides of the screening box (611). The drive rod (71), the main drive gear (72) and the driven gear (73) are all located inside the protective box (13). Multiple through holes are distributed on the screening cylinder (612) between the connecting cylinder (631) and the protective box (13).

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