A heavy metal contaminated soil stratification treatment device

Abstract

The invention relates to the technical field of ecological restoration, and in particular to a heavy metal contaminated soil stratification treatment device, comprising a storage mechanism, a lifting mechanism, a soil taking mechanism, and a placing mechanism; a rack is fixed on a hollow cylinder, a lifting mechanism is slidably installed on the hollow cylinder, a lifting frame is slidably installed on the hollow cylinder, a transmission group connects the rack and a spiral shaft, the spiral shaft is installed inside a conveying empty pipe, the transmission group and the rack assist the spiral shaft to go deep into the soil to take soil, the soil taking mechanism is installed at the bottom of the conveying empty pipe, a soil drilling group is rotatably installed between the conveying empty pipe and the soil taking empty pipe, the soil drilling group and the lifting mechanism share a motor, the soil drilling group drives the soil drilling blade to rotate through a fixed rod, and the spiral shaft sends the soil drilled by the soil drilling blade into the conveying empty pipe; a discharge sheet is arranged on a storage rack, a closing group is arranged below the storage rack, a limiting group is fixed on the storage rack, the opening and closing of the closing group cooperates with the limiting group to put only one discharge sheet into a soil pit, the mechanical structures cooperate closely, and the design is ingenious.

Description

Technical Field

[0001] The invention relates to the technical field of ecological restoration, and in particular to a device for layered treatment of heavy metal polluted soil. Background Art

[0002] In view of the increasing severity of soil pollution and the expansion of polluted areas, contaminated soil remediation is a technology that urgently needs to be developed. Otherwise, soil pollution will lead to more serious environmental problems and affect the normal growth of animals and plants, especially crops. Among soil pollution, heavy metal pollution is a more common form of pollution.

[0003] Most of the electric remediation equipment nowadays is large-scale and not easy to carry. Many of them concentrate the contaminated soil and transport it to the remediation equipment for remediation, which cannot be used on site. Although many mobile remediation equipment can be transported to the site, in many cases the soil still needs to be separated and sent to the equipment for remediation, and it cannot be repaired on site, which brings many inconveniences to the remediation. In addition, the remediation equipment also has many problems such as complex structure and inconvenient use, which brings inconvenience to the rapid development of electric remediation technology.

[0004] The Chinese utility model patent with publication number CN206622441U discloses a device for heavy metal contaminated soil treatment, including a low-voltage DC power supply, an anode electrolysis assembly and a cathode electrolysis assembly connected to the positive and negative electrodes of the low-voltage DC power supply respectively; the anode electrolysis assembly or the cathode electrolysis assembly includes a metal electrode rod, the lower end of the metal electrode rod is connected to a conical drill bit, the middle part of the metal electrode rod is sleeved with a plastic electrolysis cylinder, and the upper end of the metal electrode rod is also connected to a rotating motor through a transmission rod; the inside of the plastic electrolysis cylinder is hollow to form an electrolytic water accommodating chamber, the circumferential surface of the plastic electrolysis cylinder is distributed with a number of ion exchange holes, and the upper end of the plastic electrolysis cylinder is also provided with a water inlet pipe and a water outlet pipe. The prior art can be directly transported and used on the spot, and can be directly drilled into the soil for repair and detection when used, which is convenient to use. Although the prior art is easy to carry, it requires manual operation, and cannot repair the deeper soil, resulting in incomplete repair, and the soil therein cannot be analyzed, so a heavy metal contaminated soil stratification treatment device is urgently needed. Summary of the invention

[0005] In view of the above technical problems, the technical solution adopted by the present invention is: a heavy metal contaminated soil layer treatment device, including a storage mechanism, a lifting mechanism, a soil taking mechanism, and a placing mechanism.

[0006] The storage mechanism comprises a transfer base and a hollow cylinder, wherein the hollow cylinder is fixedly mounted on the transfer base, a rack is fixedly mounted on the hollow cylinder, a lifting mechanism is slidably mounted on the hollow cylinder, the lifting mechanism comprises a lifting frame and a spiral shaft, the lifting frame is slidably mounted on the hollow cylinder through a sliding rod, a transmission group and a conveying hollow pipe are fixedly mounted on the lifting frame, the transmission group is connected between the rack and the spiral shaft, the spiral shaft is rotatably mounted inside the conveying hollow pipe, the transmission group and the rack assist the spiral shaft to go deep into the soil to take soil, the soil taking mechanism is fixedly mounted at the bottom of the conveying hollow pipe, and the soil taking mechanism is arranged inside the hollow cylinder, the soil taking mechanism comprises a soil drilling group, ... blades, a soil-taking empty pipe is fixed at the bottom of the conveying empty pipe, a soil-drilling group is rotatably installed between the conveying empty pipe and the soil-taking empty pipe, four fixing rods are fixed on the soil-drilling group, there are four soil-drilling blades in total, the soil-drilling blades are fixedly installed at the bottom of the fixing rods, the soil-drilling group drives the soil-drilling blades to rotate through the fixing rods, and the spiral shaft sends the soil drilled by the soil-drilling blades into the conveying empty pipe; the placing mechanism includes a rack and a closing group, a discharge sheet is arranged on the rack, the closing group is arranged below the rack, a restriction group is fixed on the rack, the closing group is rotatably installed on the transfer base, and the opening and closing of the closing group cooperates with the restriction group to place the discharge sheet into the soil pit for taking away the soil.

[0007] Furthermore, the storage mechanism also includes a quadrangular frame and a storage box, the transport hollow pipe is slidably mounted on the quadrangular frame, the quadrangular frame is fixedly mounted on the hollow cylinder, the hollow cylinder is provided with a hollow pipe, the sliding rod is slidably mounted on the hollow pipe, the storage box is arranged above the placement mechanism, the storage box is arranged below the output pipe of the lifting mechanism, the storage box is fixedly mounted on the transfer base, and rollers are rotatably mounted on the four corners of the transfer base. The rollers assist the movement of the transfer base, and the hollow cylinder assists the lifting of the lifting mechanism to transport the soil drilled by the soil taking mechanism.

[0008] Furthermore, the lifting mechanism also includes a lifting motor and a support frame, the lifting motor is fixedly mounted on the support frame, the support frame is fixedly mounted on the top of the empty conveying pipe, the output pipe is fixedly mounted on the empty conveying pipe, the spiral shaft is fixedly mounted on the output shaft of the lifting motor, the driving gear of the transmission group is rotatably mounted on the support frame, and the driving gear is fixedly mounted on the output shaft of the lifting motor. When the lifting motor drives the driving gear to rotate, the lifting motor drives the spiral shaft to rotate, and when the spiral shaft rotates, the drilled soil is transported to the empty conveying pipe until the soil is transported to the output pipe and falls into the storage box below.

[0009] Furthermore, the transmission group includes a driven gear and a lifting gear. The driven gear is rotatably mounted on the support frame, the driven gear is meshed with the driving gear, a driving bevel gear is fixed on the driven gear, and the lifting gear is rotatably mounted on the lifting frame, the lifting gear is meshed with the rack, a driven bevel gear is fixed on the lifting gear, and the driven bevel gear is meshed with the driving bevel gear. When the driving gear rotates, it drives the driven gear to rotate, the driven gear drives the driving bevel gear to rotate, the driving bevel gear drives the driven bevel gear to rotate, and the driven bevel gear drives the lifting gear to rotate. When the lifting gear rotates, it drives the lifting mechanism to move up and down in the quadrangular frame and the hollow cylinder under the action of the rack.

[0010] Furthermore, the soil-taking mechanism also includes a bearing and a transmission cylinder. The bearing is rotatably mounted on the soil-taking hollow tube, the transmission cylinder is fixedly mounted on the bottom of the soil-taking hollow tube, the bottom of the spiral shaft is rotatably mounted on the transmission cylinder, and the middle of the four fixed rods is fixedly mounted on the bearing. When the soil-drilling group rotates, it drives the fixed rod to rotate, and the fixed rod drives the bearing to rotate. The bearing assists the rotation of the soil-drilling blade, so that the soil-drilling blade drills the soil more smoothly and quickly, and the soil drilled by the soil-drilling blade is transported to the spiral shaft through the transmission cylinder.

[0011] Furthermore, the soil drilling group includes an external meshing gear and an internal meshing gear, the external meshing gear is fixedly mounted on the spiral blade below the spiral shaft, the upper part of the external meshing gear is rotatably mounted on the bottom of the conveying empty pipe, the lower part of the external meshing gear is rotatably mounted on the top of the soil excavation empty pipe, eight fixing pins are arranged between the soil excavation empty pipe and the conveying empty pipe, the first end of the fixing pin is fixedly mounted on the bottom of the conveying empty pipe, the second end of the fixing pin is fixedly mounted on the top of the soil excavation empty pipe, four interval fixing pins are rotatably mounted with circular gears, the circular gears are respectively meshed with the external meshing gear and the internal meshing gear, the upper end of the internal meshing gear is rotatably mounted on the bottom of the conveying empty pipe, the lower end of the internal meshing gear is rotatably mounted on the top of the soil excavation empty pipe, and four fixing rods are evenly fixedly mounted on the internal meshing gear. When the spiral shaft rotates, it drives the external meshing gear to rotate on the conveying empty pipe and the soil excavation empty pipe, the external meshing gear drives the fixing pin to rotate, the fixing pin drives the internal meshing gear to rotate, and the internal meshing gear drives the fixing rod to rotate.

[0012] Furthermore, the placement mechanism also includes a placement motor and a pinion gear. The placement motor is fixedly mounted on the motor frame of the transfer base. Four adjustment rods are fixedly mounted on the transfer base. The rack is fixedly mounted on the four adjustment rods. The pinion gear is rotatably mounted on the transfer base. The pinion gear is fixedly mounted on the output shaft of the placement motor. The adjustment rod assists in adjusting the distance between the rack and the closing group according to the thickness of the discharge sheet, and the placement motor drives the pinion gear to rotate.

[0013] Furthermore, the closed group includes a gear ring and a fixed column, the fixed column is fixedly mounted on the transfer base, the gear ring is rotatably mounted on the fixed column, the gear ring is meshed with a pinion, six rotating pins are fixedly mounted above the fixed column, six sliding columns are fixed on the gear ring, and the sliding columns are slidably mounted on the fixed column. The pinion drives the gear ring to rotate, and when the gear ring rotates, it drives the sliding columns to slide on the fixed column.

[0014] Furthermore, the closing group also includes rotating blades, and there are six rotating blades in total. The rotating blades are respectively rotatably mounted on the rotating pins, and arc tracks are provided on the rotating blades. The sliding column is slidably mounted on the arc tracks. When the sliding column slides on the fixed column, the sliding column slides in the arc track, driving the rotating blades to rotate on the rotating pins. At this time, the six rotating blades are closed, and the discharge sheet is controlled to be buried in the pit.

[0015] Furthermore, the limiting group includes a limiting slider and a driving rod. A fixed slide is fixed on the storage rack. The limiting slider is slidably mounted on the fixed slide. Two return springs are arranged between the fixed slide and the limiting slider. The first end of the return spring is fixedly mounted on the fixed slide. The second end of the return spring is fixedly mounted on the limiting slider. The top end of the driving rod is rotatably mounted on the limiting slider. The middle end of the driving rod is rotatably mounted on the fixed slide. The lower end of the driving rod contacts a rotating blade. When the six rotating blades rotate and release, one rotating blade pushes the driving rod, and the driving rod swings around the fixed slide, pushing the limiting slider to slide on the fixed slide. The limiting slider clamps the discharge sheet on the storage rack, so that the discharge sheet between the storage rack and the rotating blade is buried in the pit, ensuring that only one discharge sheet is buried in the pit each time. When the six rotating blades rotate and close, the two return springs assist the limiting slider to restore the initial position, and the remaining discharge sheets continue to fall.

[0016] Compared with the prior art, the present invention has the following beneficial effects: (1) the storage box stores the deep soil taken out, which is convenient for workers to analyze the soil; (2) the rack and transmission group assist the lifting mechanism to drive the soil taking mechanism to move, so that soil samples of different layers can be taken and discharge sheets can be placed for repair; (3) the soil drilling group and the lifting mechanism share a motor to drive the soil drilling blades to drill the soil, and the mechanism design is ingenious; (4) the closing group cooperates with the limiting group to ensure that only one discharge sheet is buried in the soil pit each time, and the mechanical structures cooperate closely; (5) the adjusting rod can assist in adjusting the distance between the storage rack and the closing group according to the thickness of the discharge sheet, so that discharge sheets of different thicknesses can be placed. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0018] Figure 2 It is a schematic diagram of the storage mechanism of the present invention.

[0019] Figure 3It is a schematic diagram of the lifting part of the storage mechanism of the present invention.

[0020] Figure 4 It is a schematic diagram of the lifting mechanism of the present invention.

[0021] Figure 5 It is a schematic diagram of the soil taking mechanism of the present invention.

[0022] Figure 6 It is a schematic diagram of the soil drilling group of the present invention.

[0023] Figure 7 It is a schematic diagram of the placement mechanism of the present invention.

[0024] Figure 8 It is a schematic diagram of a closed group of the present invention.

[0025] Fig. 9 Schematic diagram of the restriction group of the present invention.

[0026] Figure numbers: 1-storage mechanism; 101-transfer base; 102-roller; 103-storage box; 104-hollow cylinder; 105-quadrant frame; 106-rack; 10101-motor frame; 10401-hollow tube; 2-lifting mechanism; 201-lifting motor; 202-lifting frame; 203-sliding rod; 204-support frame; 205-transmission group; 206-output pipe; 207-screw shaft; 208-transporting empty pipe; 20501-driving gear; 20502-driven gear; 20503-driving bevel gear; 20504-driven bevel gear; 20505-lifting gear; 3-soil taking mechanism; 301-soil taking empty pipe; 302-soil drilling group; 303-bearing; 304-fixing rod; 305-drilling blade; 306-transmission cylinder; 30201-external meshing gear; 30202-fixing pin; 30203-circular gear; 30204-internal meshing gear; 4-placing mechanism; 401-shelf; 402-adjusting rod; 403-placing motor; 404-pinion; 405-closing group; 406-limiting group; 40501-sliding column; 40502-rotating pin; 40503-rotating blade; 40504-gear ring; 40505-arc track; 40506-fixing column; 40601-fixing slide; 40602-limiting slider; 40603-reset spring; 40604-driving rod. DETAILED DESCRIPTION

[0027] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0028] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on this patent; in order to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0029] Example: Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 The device for layered treatment of heavy metal contaminated soil shown in the figure comprises a storage mechanism 1, a lifting mechanism 2, a soil taking mechanism 3, and a placing mechanism 4.

[0030] Storage mechanism 1, there are four rollers 102, the rollers 102 are rotatably installed on the four corners of the transfer base 101, the storage box 103 is arranged below the output pipe 206, the storage box 103 is fixedly installed on the transfer base 101, the rollers 102 facilitate the movement of the transfer base 101 to process soil at different positions, the hollow cylinder 104 is fixedly installed on the transfer base 101, the quadrangular frame 105 is fixedly installed on the hollow cylinder 104, the hollow cylinder 104 is provided with a hollow tube 10401, and the rack 106 is fixedly installed on the hollow cylinder 104.

[0031] Lifting mechanism 2, the lifting motor 201 is fixedly mounted on the support frame 204, the support frame 204 is fixedly mounted on the top of the empty conveying tube 208, the output tube 206 is fixedly mounted on the empty conveying tube 208, the empty conveying tube 208 is slidably mounted on the quadrangular frame 105, the spiral shaft 207 is rotatably mounted inside the empty conveying tube 208, the spiral shaft 207 is fixedly mounted on the output shaft of the lifting motor 201, the lifting motor 201 drives the spiral shaft 207 to rotate, and the transmission group 205 includes a driving gear 20501 , driven gear 20502, driving bevel gear 20503, driven bevel gear 20504, lifting gear 20505; driving gear 20501 is rotatably mounted on the support frame 204, driving gear 20501 is fixedly mounted on the output shaft of the lifting motor 201, when the lifting motor 201 drives the spiral shaft 207 to rotate, it drives the driving gear 20501 to rotate; driven gear 20502 is rotatably mounted on the support frame 204, and driven gear 20502 is meshed with driving gear 20501, When the driving gear 20501 rotates, it drives the driven gear 20502 to rotate. The driving bevel gear 20503 is fixedly mounted on the driven gear 20502. The driven bevel gear 20504 is rotatably mounted on the lifting frame 202. When the driven gear 20502 rotates, it drives the driving bevel gear 20503 to rotate. The driven bevel gear 20504 meshes with the driving bevel gear 20503. The driving bevel gear 20503 drives the driven bevel gear 20504 to rotate. The lifting gear 20505 is rotatably mounted on the lifting frame 20 2, the lifting gear 20505 is fixedly installed with the driven bevel gear 20504. When the driven bevel gear 20504 rotates, the lifting gear 20505 is driven to rotate. The lifting frame 202 is fixedly installed on the top of the sliding rod 203. The sliding rod 203 is slidably installed on the hollow tube 10401. The lifting gear 20505 is meshed with the rack 106. When the lifting gear 20505 rotates, the lifting mechanism 2 is driven to move up and down in the quadrangular frame 105 and the hollow tube 104 under the action of the rack 106 and the sliding rod 203.

[0032] The soil taking mechanism 3 is arranged inside the hollow cylinder 104, the soil taking mechanism 3 is fixedly installed below the conveying empty pipe 208, the soil taking empty pipe 301 is fixedly installed at the bottom of the conveying empty pipe 208, the soil drilling group 302 includes an external meshing gear 30201, a fixing pin 30202, a circular gear 30203, and an internal meshing gear 30204, the external meshing gear 30201 is fixedly installed on the spiral blade below the spiral shaft 207, and the spiral shaft 207 rotates to drive the external meshing gear 30201 to rotate; there are eight fixing pins 30202, and the eight fixing pins 30202 are arranged between the soil taking empty pipe 301 and the conveying empty pipe 208, the first end of the fixing pin 30202 is fixedly installed at the bottom of the conveying empty pipe 208, and the fixing pin 302 02 The second end is fixedly installed on the top of the soil-excavating empty pipe 301. There are four circular gears 30203. The four circular gears 30203 are rotatably installed on four spaced fixed pins 30202. The outer gear 30201 is meshed with the fixed pin 30202. When the outer gear 30201 rotates, the four circular gears 30203 are driven to rotate; the internal gear 30204 is arranged between the conveying empty pipe 208 and the soil-excavating empty pipe 301. The upper end of the internal gear 30204 is rotatably installed on the bottom of the conveying empty pipe 208, and the lower end of the internal gear 30204 is rotatably installed on the top of the soil-excavating empty pipe 301. The circular gear 30203 is meshed with the internal gear 30204, and the rotation of the circular gear 30203 drives the internal gear 30204 to rotate.

[0033] There are four fixed rods 304, which are evenly fixed on the internal gear 30204 and the bearing 303. The top of the fixed rod 304 is fixed on the internal gear 30204, the middle of the fixed rod 304 is fixed on the bearing 303, the bearing 303 is rotatably mounted on the soil-taking hollow tube 301, the transmission cylinder 306 is fixedly mounted on the bottom of the soil-taking hollow tube 301, and there are four drilling blades 305, which are fixedly mounted on the bottom of the fixed rod 304; when the internal gear 30204 rotates, it drives the fixed rod 304 to rotate, the fixed rod 304 drives the bearing 303 to rotate, and the bearing 303 assists the rotation of the drilling blade 305, so that the drilling blade 305 can drill the soil more smoothly and quickly, and the soil drilled by the drilling blade 305 is transported to the spiral shaft 207 through the transmission cylinder 306.

[0034] The placing mechanism 4 has four adjusting rods 402. The rack 401 is fixedly mounted on the adjusting rods 402. The rack 401 is provided with a discharge sheet. The adjusting rods 402 are fixedly mounted on the transfer base 101. The transfer base 101 is provided with a motor frame 10101. The placing motor 403 is fixedly mounted on the motor frame 10101. The pinion 404 is rotatably mounted on the transfer base 101. The pinion 404 is fixedly mounted on the output shaft of the placing motor 403. The adjusting rods 402 assist in adjusting the distance between the rack 401 and the closing group 405 according to the thickness of the discharge sheet. The placing motor 403 drives the pinion 404 to rotate.

[0035] The closing group 405 includes a sliding column 40501, a rotating pin 40502, a rotating blade 40503, a gear ring 40504, an arc track 40505, and a fixed column 40506. The sliding column 40501 is fixedly mounted on the gear ring 40504, the gear ring 40504 is rotatably mounted on the fixed column 40506, the fixed column 40506 is fixedly mounted on the transfer base 101, the sliding column 40501 is slidably mounted on the fixed column 40506, the gear ring 40504 is meshed with the pinion 404, and when the pinion 404 rotates, the gear ring 40504 is driven to rotate, and when the gear ring 40504 rotates, the sliding column 40501 is driven to rotate. The moving column 40501 slides on the fixed column 40506. There are six rotating pins 40502, which are fixedly mounted on the fixed column 40506. There are six rotating blades 40503, which are respectively rotatably mounted on the rotating pins 40502. The arc track 40505 is set on the rotating blades 40503. The sliding column 40501 is slidably mounted on the arc track 40505. When the gear ring 40504 rotates, the sliding column 40501 drives the rotating blades 40503 to rotate on the rotating pins 40502. At this time, the six rotating blades 40503 are closed, and the discharge plate is controlled to be placed in the pit.

[0036] The limiting group 406 includes a fixed slide 40601, a limiting slider 40602, a return spring 40603, and a driving rod 40604. The fixed slide 40601 is fixedly installed on the storage rack 401, the limiting slider 40602 is slidably installed on the fixed slide 40601, there are two return springs 40603, the two return springs 40603 are arranged on both sides of the limiting slider 40602, and the return spring 40603 is arranged between the fixed slide 40601 and the limiting slider 40602. The first end of the return spring 40603 is fixedly installed on the fixed slide 40601, and the second end of the return spring 40603 is fixedly installed on the limiting slider 40602. The top end of the driving rod 40604 is rotatably installed on the limiting slider 40602, the middle end of the driving rod 40604 is rotatably installed on the fixed slide 40601, and the lower end of the driving rod 40604 contacts a rotating blade 40503. When the six rotating blades 40503 rotate and release, one rotating blade 40503 pushes the driving rod 40604, and the driving rod 40604 swings around the fixed slide 40601, pushing the limiting slider 40602 to slide on the fixed slide 40601, and the reset spring 40603 contracts, and the limiting slider 40602 clamps the discharge sheet on the rack 401, so that the discharge sheet between the rack 401 and the rotating blade 40503 is buried in the pit, ensuring that one discharge sheet is buried in the pit each time, and when the six rotating blades 40503 rotate and close, the two reset springs 40603 assist the limiting slider 40602 to restore the initial position, and the remaining discharge sheets continue to fall.

[0037] Working principle: When the heavy metal contaminated soil is treated in layers, the transfer base 101 is pushed to the position of the target soil, and the lifting motor 201 is started. The lifting motor 201 drives the spiral shaft 207 and the driving gear 20501 to rotate clockwise. When the driving gear 20501 rotates, it drives the driven gear 20502 to rotate. The driven gear 20502 drives the driving bevel gear 20503 to rotate. The driving bevel gear 20503 drives the driven bevel gear 20504 to rotate. The driven bevel gear 20504 drives the lifting gear 20505 to rotate. When the lifting gear 20505 rotates, the lifting mechanism 2 is driven to move up and down in the quadrangular frame 105 and the hollow cylinder 104 under the action of the rack 106 and the sliding rod 203, and the lifting mechanism 2 drives the soil taking mechanism 3 to move downward.

[0038] When the soil drilling blade 305 contacts the soil, the spiral shaft 207 rotates and drives the outer meshing gear 30201 to rotate; the outer meshing gear 30201 drives the four circular gears 30203 to rotate, and the rotation of the circular gear 30203 drives the inner meshing gear 30204 to rotate. When the inner meshing gear 30204 rotates, it drives the fixed rod 304 to rotate, and the fixed rod 304 drives the bearing 303 to rotate. The bearing 303 assists the rotation of the soil drilling blade 305, so that the soil drilling blade 305 can drill the soil more smoothly and quickly. The soil drilled by the soil drilling blade 305 is transported to the spiral shaft 207 through the transmission cylinder 306. As the spiral shaft 207 and the driving gear 20501 rotate, the soil taking mechanism 3 drills deeper soil as the lifting gear 20505 meshes with the rack 106. The soil of the target soil layer to be drilled is determined according to needs; the drilled soil is transported by the spiral shaft 207 and the empty conveying pipe 208, and enters the storage box 103 through the output pipe 206.

[0039] After the soil transfer is completed, the lifting motor 201 is started, and the lifting motor 201 rotates counterclockwise, and the lifting mechanism 2 and the soil taking mechanism 3 move upward. After moving out of the soil pit, the transfer base 101 is pushed to align the closing group 405 with the soil pit, and the placement motor 403 is started. The placement motor 403 drives the small gear 404 to rotate counterclockwise, and the small gear 404 drives the gear ring 40504 to rotate. The gear ring 40504 drives the sliding column 40501 to slide on the fixed column 40506. When the gear ring 40504 rotates, the sliding column 40501 drives the rotating blade 40503 to rotate on the rotating pin 40502. At this time, the six rotating blades 40503 are unfolded. When the six rotating blades 40503 rotate and unfold, one rotating blade 40503 pushes the driving rod 40604, and the driving rod 40604 swings around the fixed slide 40601, pushing the limiting slider 40602 to slide on the fixed slide 40601, and the reset spring 40603 contracts, and the limiting slider 40602 clamps the discharge sheet on the rack 401, so that the discharge sheet between the rack 401 and the rotating blade 40503 is buried in the pit, ensuring that one discharge sheet is buried in the pit each time, and the discharge sheet absorbs and collects heavy metals in the surrounding soil. After a period of time, the discharge sheet only needs to be taken out after the surrounding soil is treated and cleaned.

[0040] After the discharge sheet is placed in the pit, the placement motor 403 drives the pinion 404 to rotate clockwise. When the six rotating blades 40503 rotate and close, the two reset springs 40603 assist the limiting slider 40602 to restore the initial position. The driving rod 40604 is no longer restricted by the rotating blades 40503. The reset spring 40603 extends, limiting the slider 40602 to slide outward from the rack 401. The limiting slider 40602 no longer restricts the discharge sheets on the rack 401, and the remaining discharge sheets continue to fall, preparing for the next discharge sheet placement.

[0041] The present invention is not limited to the above-mentioned specific implementation modes. Various changes made by technicians in the relevant technical field based on the above-mentioned conception without creative work all fall within the protection scope of the present invention.

Claims

1. A heavy metal contaminated soil stratification treatment device, comprising a storage mechanism, a lifting mechanism, a soil taking mechanism, and a placing mechanism; characterized in that: The storage mechanism comprises a transfer base and a hollow cylinder, wherein the hollow cylinder is fixedly mounted on the transfer base, a rack is fixedly mounted on the hollow cylinder, a lifting mechanism is slidably mounted on the hollow cylinder, the lifting mechanism comprises a lifting frame and a spiral shaft, the lifting frame is slidably mounted on the hollow cylinder through a sliding rod, a transmission group and a conveying hollow pipe are fixedly mounted on the lifting frame, the transmission group is connected between the rack and the spiral shaft, the spiral shaft is rotatably mounted inside the conveying hollow pipe, the transmission group and the rack assist the spiral shaft to go deep into the soil to take soil, the soil taking mechanism is fixedly mounted at the bottom of the conveying hollow pipe, the soil taking mechanism is arranged inside the hollow cylinder, the soil taking mechanism comprises a soil drilling group, a soil drilling blade, a conveying hollow pipe, and a conveying hollow pipe. A soil-taking empty pipe is fixed at the bottom of the empty pipe, and a soil-drilling group is rotatably installed between the conveying empty pipe and the soil-taking empty pipe. Four fixing rods are fixed on the soil-drilling group, and there are four soil-drilling blades in total. The soil-drilling blades are fixedly installed at the bottom of the fixing rods. The soil-drilling group drives the soil-drilling blades to rotate through the fixing rods, and the spiral shaft sends the soil drilled by the soil-drilling blades into the conveying empty pipe; the placement mechanism includes a rack, a closing group, a placement motor, and a pinion gear. A discharge sheet is arranged on the rack, and the closing group is arranged below the rack. A restriction group is fixed on the rack, and the closing group is rotatably installed on the transfer base. The opening and closing of the closing group cooperates with the restriction group to place the discharge sheet into the soil pit where the soil is taken; The closed group includes a gear ring, a fixed column, and a rotating blade. The fixed column is fixedly mounted on the transfer base, the gear ring is rotatably mounted on the fixed column, the gear ring is meshed with the pinion, six rotating pins are fixedly mounted above the fixed column, six sliding columns are fixed on the gear ring, and the sliding columns are slidably mounted on the fixed column; there are six rotating blades in total, and the rotating blades are rotatably mounted on the rotating pins respectively, and arc rails are provided on the rotating blades, and the sliding columns are slidably mounted on the arc rails; The limiting group includes a limiting slider and a driving rod. A fixed slide is fixed on the storage rack. The limiting slider is slidably installed on the fixed slide. Two return springs are arranged between the fixed slide and the limiting slider. The top end of the driving rod is rotatably installed on the limiting slider. The middle end of the driving rod is rotatably installed on the fixed slide. The lower end of the driving rod contacts a rotating blade.

2. The heavy metal contaminated soil stratification treatment device according to claim 1 is characterized by: The storage mechanism also includes a quadrangular frame and a storage box. The empty conveying tube is slidably mounted on the quadrangular frame, the quadrangular frame is fixedly mounted on the hollow cylinder, the hollow cylinder is provided with a hollow tube, the sliding rod is slidably mounted on the hollow tube, the storage box is arranged above the placing mechanism, the storage box is arranged below the output tube of the lifting mechanism, the storage box is fixedly mounted on the transfer base, and rollers are rotatably mounted on the four corners of the transfer base.

3. The heavy metal contaminated soil stratification treatment device according to claim 1 is characterized by: The lifting mechanism also includes a lifting motor and a support frame. The lifting motor is fixedly mounted on the support frame. The support frame is fixedly mounted on the top of the empty conveying pipe. The output pipe is fixedly mounted on the empty conveying pipe. The spiral shaft is fixedly mounted on the output shaft of the lifting motor. The driving gear of the transmission group is rotatably mounted on the support frame. The driving gear is fixedly mounted on the output shaft of the lifting motor.

4. The heavy metal contaminated soil stratification treatment device according to claim 3 is characterized by: The transmission group includes a driven gear and a lifting gear. The driven gear is rotatably mounted on the support frame, the driven gear is meshed with the driving gear, a driving bevel gear is fixed on the driven gear, the lifting gear is rotatably mounted on the lifting frame, the lifting gear is meshed with the rack, a driven bevel gear is fixed on the lifting gear, and the driven bevel gear is meshed with the driving bevel gear.

5. The heavy metal contaminated soil stratification treatment device according to claim 1 is characterized by: The soil taking mechanism also includes a bearing and a transmission cylinder. The bearing is rotatably mounted on the soil taking hollow pipe, the transmission cylinder is fixedly mounted on the bottom of the soil taking hollow pipe, the bottom of the spiral shaft is rotatably mounted on the transmission cylinder, and the middle parts of the four fixing rods are fixedly mounted on the bearing.

6. The heavy metal contaminated soil stratification treatment device according to claim 1 is characterized by: The soil drilling group includes an external meshing gear and an internal meshing gear. The external meshing gear is fixedly mounted on the spiral blade below the spiral rotating shaft. The upper part of the external meshing gear is rotatably mounted on the bottom of the conveying empty pipe, and the lower part of the external meshing gear is rotatably mounted on the top of the soil excavation empty pipe. Eight fixing pins are arranged between the soil excavation empty pipe and the conveying empty pipe. The first end of the fixing pin is fixedly mounted on the bottom of the conveying empty pipe, and the second end of the fixing pin is fixedly mounted on the top of the soil excavation empty pipe. Circular gears are rotatably mounted on four spaced fixing pins, and the circular gears are respectively meshed with the external meshing gear and the internal meshing gear. The upper end of the internal meshing gear is rotatably mounted on the bottom of the conveying empty pipe, and the lower end of the internal meshing gear is rotatably mounted on the top of the soil excavation empty pipe. Four fixing rods are evenly fixedly mounted on the internal meshing gear.

7. The heavy metal contaminated soil stratification treatment device according to claim 1 is characterized by: The placement motor is fixedly mounted on the motor frame of the transfer base, four adjustment rods are fixedly mounted on the transfer base, the storage rack is fixedly mounted on the four adjustment rods, the pinion is rotatably mounted on the transfer base, and the pinion is fixedly mounted on the output shaft of the placement motor.

8. The heavy metal contaminated soil stratification treatment device according to claim 1 is characterized by: The first end of the return spring is fixedly mounted on the fixed slide, and the second end of the return spring is fixedly mounted on the limiting slide.

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