A device for shallow in-situ mixing remediation of contaminated soil

Abstract

The utility model provides a kind of for the shallow in-situ mixed remediation equipment of contaminated soil belongs to soil remediation technical field, including rack, the oblique side wall of the rack is uniformly fixedly connected with a group of fixed sleeve, the fixed sleeve is uniformly fixedly connected with fixed cylinder in, the fixed cylinder upper end surface is fixedly connected with bearing, the inner ring inboard of bearing is fixedly connected with the shaft of the fixed sleeve, the bottom end of the shaft is fixedly connected with rotary cylinder and is fixed in fixed cylinder, the outer circumferential side wall of rotary cylinder is uniformly fixedly connected with rotary vane, power component for driving the rotation of shaft is equipped on the rack in.The utility model in, by setting rotary cylinder, rotary vane, power component and plough piece, realize plough piece first plough loose soil, then pass through rotary vane agitating and make soil particle dispersion, the dispersion of soil is more uniform, can be contacted with reagent sufficiently, improve the effect of mixed remediation, solve the problem that the effect of soil crushing is not good in prior art and leads to the problem of poor remediation effect.

Description

Technical Field

[0001] This utility model relates to the field of soil remediation technology, and more specifically, to a shallow in-situ mixing remediation device for contaminated soil. Background Technology

[0002] With the acceleration of industrial production, agricultural planting, and urbanization, soil pollution has become increasingly prominent. Heavy metals and organic pollutants pose serious threats to soil ecological functions and human health, making the research and application of contaminated soil remediation technology one of the core needs in the field of environmental governance. Shallow soil (typically referring to the area 0-1.5m below the surface) is the main contact area for human activities, and its remediation efficiency and effectiveness directly affect ecological and environmental safety. Therefore, the development of efficient and stable shallow contaminated soil remediation equipment is of significant practical importance. In-situ remediation technology for shallow contaminated soil has been widely used due to its advantages such as no need for soil excavation, minimal disturbance to the surrounding environment, and lower remediation costs.

[0003] A search revealed Chinese patent application CN201810088352.5, which discloses an in-situ remediation method for shallow mixing of contaminated soil. The method includes the following steps: dividing the construction area into an upper contaminated soil layer and a lower contaminated soil layer along its depth; creating trenches on the surface of the construction area for rinsing the soil with a surfactant solution; removing the upper contaminated soil layer using an excavator, and simultaneously spraying an alkaline activator into the lower contaminated soil layer using a mixing nozzle on a shallow in-situ mixing device to adjust the pH value to between 10 and 12; spraying an oxidative remediation agent into the lower contaminated soil layer using the mixing nozzle to remediate the contaminated soil; and backfilling the upper contaminated soil layer using an excavator, thus completing the addition and mixing of the alkaline activator and oxidative remediation agent in the upper contaminated soil layer. The advantage of this invention is that by adding the chemical oxidative remediation agent in layers and mixing it in situ within the contaminated soil, the uniformity of the mixing can be ensured. Although the above-mentioned patent can achieve the remediation function, there are still the following shortcomings in the use process: In the existing technology, the soil is turned over by cutting blades, which results in poor soil breaking effect, poor mixing effect between soil and agent, and thus poor soil remediation effect. At the same time, the agent spraying is delayed after soil mixing, which means that the agent cannot be mixed with fresh broken soil in time, further reducing the remediation effect.

[0004] Therefore, there is an urgent need for a shallow in-situ mixing remediation device for contaminated soil to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a shallow in-situ mixing remediation device for contaminated soil, so as to solve the problems mentioned in the background art.

[0006] To achieve the above-mentioned objectives, this utility model provides the following technical solution: A shallow in-situ mixed remediation device for contaminated soil includes a frame. A set of fixing sleeves are uniformly fixedly connected to the inclined sidewall of the frame. A fixing cylinder is fixedly connected inside each fixing sleeve. A bearing is fixedly connected to the upper end face of each fixing cylinder. A rotating shaft is fixedly connected to the inner sidewall of the inner ring of the bearing. The bottom end of the rotating shaft passes through the fixing cylinder and is fixedly connected to a rotary cylinder. Rotating blades are uniformly fixedly connected to the outer peripheral sidewall of the rotary cylinder. A power assembly for driving the rotating shaft to rotate is provided on the frame. A spraying assembly is provided on the frame. A bracket is provided on the front side of each fixing sleeve. The bracket is fixedly connected to the frame. A plow blade is fixedly connected to the bottom end of the bracket. An installation assembly is provided at the front end of the frame.

[0007] As a preferred technical solution of this application, the power assembly includes first pulleys fixed to the top of the rotating shaft, adjacent first pulleys being connected by a first synchronous belt, a fixed plate being fixedly connected to the front end of the frame, a motor being fixedly connected to the upper surface of the fixed plate, a second pulley being fixedly connected to the drive end of the motor, the second pulley being connected to the first pulley at the front end by a second synchronous belt, a protective cover being provided between the first pulley and the second pulley, a support plate being fixedly connected to the inner side wall of the protective cover, and the bottom end of the support plate being fixedly connected to the upper surface of the frame.

[0008] As a preferred technical solution of this application, the spraying assembly includes a spraying pipe disposed on the outside of the rotary drum, a set of nozzles uniformly and fixedly connected to the spraying pipe, two fixing rings fixedly connected to the spraying pipe, the two fixing rings being fixedly connected to the frame by fixing rods respectively, a support plate fixedly connected inside the frame, a storage tank fixedly connected to the upper end face of the support plate, a delivery pump fixedly connected to the upper end face of the support plate, the input end of the delivery pump being connected to and fixedly connected to the storage tank through an input pipe, and an output pipe fixedly connected to the output end of the delivery pump, the outer end of the output pipe being connected to and fixedly connected to the spraying pipe.

[0009] As a preferred technical solution of this application, the mounting assembly includes a mounting plate disposed on the outer side of the front end of the frame. A movable seat is fixedly connected to the top side wall of the mounting plate near the side wall of the frame. A telescopic cylinder is rotatably connected inside the movable seat. A connecting block is fixedly connected to the driving end of the telescopic cylinder. A connecting frame is rotatably connected to the connecting block. The connecting frame is fixedly connected to the frame. Two mating seats are symmetrically and fixedly connected to the bottom of the mounting plate near the side wall of the frame. A connecting rod is rotatably connected inside each of the two mating seats. A connecting seat is rotatably connected to the end of the connecting rod near the frame. The connecting seat is fixedly connected to the frame.

[0010] As a preferred technical solution of this application, a vertical plate is fixedly connected to the center of the bottom of the straight side wall of the frame, and an auxiliary wheel is rotatably connected to the bottom of the vertical plate.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: In the scheme of this application: 1. By setting up a rotary drum, rotary blades, power components and plow blades, the plow blades first loosen the compacted soil, and then the rotary blades agitate the soil particles to disperse them. The soil dispersion is more uniform, which can fully contact the agent and improve the effect of mixed remediation. This solves the problem of poor soil breaking effect in the existing technology, which leads to poor remediation effect. 2. By setting up the spraying components, the spraying range of the nozzles is precisely aligned with the soil dispersion area. The atomized agent can quickly penetrate into the gaps in the fresh and broken soil, making the agent and soil mix more evenly, significantly improving the remediation effect, and solving the problem of poor agent spraying effect in existing technologies. Attached Figure Description

[0012] Figure 1 One of the overall structural schematic diagrams of the shallow in-situ mixing remediation device for contaminated soil provided in this application; Figure 2 The second schematic diagram of the overall structure of the shallow in-situ mixing remediation device for contaminated soil provided in this application; Figure 3 A schematic diagram of the shallow in-situ mixing remediation device for contaminated soil provided in this application without the protective cover; Figure 4 The shallow in-situ mixed remediation equipment for contaminated soil provided in this application Figure 3 A structural diagram from another perspective; Figure 5 This is a front view structural diagram of the shallow in-situ mixing remediation device for contaminated soil provided in this application.

[0013] The image shows: 1. Frame; 2. Fixing sleeve; 3. Fixing cylinder; 4. Bearing; 5. Rotating shaft; 6. Rotating cylinder; 7. Rotating vane; 8. Power assembly; 801. First pulley; 802. First synchronous belt; 803. Fixing plate; 804. Motor; 805. Second pulley; 806. Second synchronous belt; 807. Protective cover; 808. Support plate; 9. Spraying assembly; 901. Spraying pipe; 902. Nozzle; 903. Fixing ring; 904. Fixing... 905. Fixed rod; 906. Bearing plate; 907. Medicine storage tank; 908. Delivery pump; 909. Input pipe; 9000. Output pipe; 10. Bracket; 11. Plow blade; 12. Mounting assembly; 1201. Mounting plate; 1202. Movable seat; 1203. Telescopic cylinder; 1204. Connecting block; 1205. Connecting frame; 1206. Mating seat; 1207. Connecting rod; 1208. Connecting seat; 13. Vertical plate; 14. Auxiliary wheel. Detailed Implementation

[0014] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model.

[0015] like Figures 1-5 As shown, this embodiment proposes a shallow in-situ mixed remediation device for contaminated soil, comprising a frame 1. A set of fixing sleeves 2 are uniformly fixedly connected to the inclined side wall of the frame 1. A fixing cylinder 3 is fixedly connected inside each fixing sleeve 2. A bearing 4 is fixedly connected to the upper end face of the fixing cylinder 3. A rotating shaft 5 is fixedly connected to the inner side wall of the inner ring of the bearing 4. The bottom end of the rotating shaft 5 passes through the fixing cylinder 3 and is fixedly connected to a rotating cylinder 6. Rotating blades 7 are uniformly fixedly connected to the outer peripheral side wall of the rotating cylinder 6. A power assembly 8 for driving the rotating shaft 5 to rotate is provided on the frame 1. A spraying assembly 9 is provided on the frame 1. A bracket 10 is provided on the front side of each fixing sleeve 2. The bracket 10 and the... The frame 1 is fixedly connected, and the bottom of the support 10 is fixedly connected to the plow blade 11. The front end of the frame 1 is equipped with the installation component 12. This equipment takes the frame 1 as the core load-bearing base and integrates plowing, power transmission, stirring, spraying, installation and adaptation and auxiliary movement functions to realize the integrated operation of shallow in-situ remediation of contaminated soil. During operation, the plow blade 11 first breaks up the surface soil compaction layer, and then the power component 8 drives the rotary drum 6 to drive the rotary blade 7 to rotate and stir the soil. At the same time, the spraying component 9 accurately sprays the remediation agent into the stirring area to make the agent fully mixed with the contaminated soil. The installation component 12 realizes the connection between the equipment and the traction device and the adjustment of the working posture.

[0016] like Figure 1 and Figure 3As shown, in a preferred embodiment, based on the above method, the power assembly 8 further includes first pulleys 801 fixed to the top of the rotating shaft 5, adjacent first pulleys 801 being connected by a first synchronous belt 802, a fixing plate 803 fixedly connected to the front end of the frame 1, a motor 804 fixedly connected to the upper surface of the fixing plate 803, a second pulley 805 fixedly connected to the drive end of the motor 804, and the second pulley 805 being connected to the front first pulleys 801 by a second synchronous belt 806. A protective cover 807 is provided, and a support plate 808 is fixedly connected to the inner wall of the protective cover 807. The bottom end of the support plate 808 is fixedly connected to the upper end face of the frame 1. The motor 804 starts and drives the second pulley 805 to rotate, which drives the front first pulley 801 to rotate through the second synchronous belt 806. The adjacent first pulleys 801 are linked through the first synchronous belt 802, so that all the rotating shafts 5 rotate synchronously. The rotation of the rotating shafts 5 drives the rotating drum 6 and the rotating blades 7 to rotate, thereby dispersing and crushing the soil. The protective cover 807 protects the pulleys and synchronous belts to prevent impurities from interfering with the transmission.

[0017] like Figure 1 and Figure 3 As shown, in a preferred embodiment, based on the above method, the spraying assembly 9 further includes a spraying pipe 901 disposed outside the rotary drum 6. A set of nozzles 902 are uniformly fixedly connected to the spraying pipe 901. Two fixing rings 903 are fixedly connected to the spraying pipe 901. The two fixing rings 903 are respectively fixedly connected to the frame 1 via fixing rods 904. A support plate 905 is fixedly connected inside the frame 1. A storage tank 906 is fixedly connected to the upper end face of the support plate 905. A delivery pump 90 is fixedly connected to the upper end face of the support plate 905. 7. The input end of the delivery pump 907 is connected and fixedly connected to the storage tank 906 through the input pipe 908. The output end of the delivery pump 907 is fixedly connected to the output pipe 909. The outer end of the output pipe 909 is connected and fixedly connected to the spray pipe 901. When the delivery pump 907 is started, it draws the pesticide from the storage tank 906 through the input pipe 908 and delivers it to the spray pipe 901 through the output pipe 909. The spray pipe 901 then atomizes the pesticide through the nozzle 902 and sprays it in a directional manner into the mixing area of ​​the rotary drum 6 and the rotary vane 7 to ensure that the pesticide is in full contact with the loose soil.

[0018] like Figures 1-3As shown, in a preferred embodiment, based on the above method, the mounting assembly 12 further includes a mounting plate 1201 disposed on the outer side of the front end of the frame 1. A movable seat 1202 is fixedly connected to the top side wall of the mounting plate 1201 near the side wall of the frame 1. A telescopic cylinder 1203 is rotatably connected inside the movable seat 1202. A connecting block 1204 is fixedly connected to the driving end of the telescopic cylinder 1203. A connecting frame 1205 is rotatably connected to the connecting block 1204. The connecting frame 1205 is fixedly connected to the frame 1. Two mating parts are symmetrically and fixedly connected to the bottom of the mounting plate 1201 near the side wall of the frame 1. The frame 1206 has two mating seats 1206, each with a rotatable connecting rod 1207. The end of the connecting rod 1207 closest to the frame 1 is rotatably connected to a connecting seat 1208, which is fixedly connected to the frame 1. The mounting assembly 12 enables the equipment to be adapted to external traction devices (such as tractors) and adjusts the working depth. The mounting plate 1201 is used to fix it to the traction device. When the telescopic cylinder 1203 extends or retracts, it drives the frame 1 to rotate around the connecting rod 1207 and the connecting seat 1208, adjusting the soil penetration depth of the plow blade 11 and the rotary cylinder 6 to adapt to different shallow soil remediation needs. It also makes it easy to raise the frame 1.

[0019] like Figure 2 As shown, in a preferred embodiment, based on the above method, a vertical plate 13 is fixedly connected to the center of the bottom of the straight side wall of the frame 1, and an auxiliary wheel 14 is rotatably connected to the bottom of the vertical plate 13; when the equipment moves, the auxiliary wheel 14 rolls to support the frame 1, reducing ground friction and improving movement stability, and avoiding uneven working depth.

[0020] Specifically, when using the shallow in-situ mixing remediation equipment for contaminated soil: First, the equipment is fixedly connected to an external traction device (such as a tractor) via the mounting component 12. Based on the hardness of the soil to be remediated and the required shallow remediation depth, the telescopic cylinder 1203 is adjusted to extend and retract, causing the frame 1 to swing around the rotation axis of the connecting rod 1207 and the connecting seat 1208, adjusting the plow blades 11 and the rotating drum 6 to the preset soil penetration depth. The traction device then moves the entire unit. At this point, the plow blades 11 at the bottom of the support 10 first cut into the surface soil, breaking up the compacted soil layer and creating a loose foundation for subsequent mixing and chemical application. Simultaneously, the motor 804 in the power component 8 starts, driving... The second pulley 805 rotates, which drives the first pulley 801 at the front end to rotate via the second synchronous belt 806. The adjacent first pulleys 801 are linked by the first synchronous belt 802, so that all the rotating shafts 5 rotate synchronously. The rotating shafts 5 rotate stably with the help of the bearings 4, which drives the bottom rotating cylinder 6 and the outer rotating blades 7 to rotate at high speed, so as to fully mix the loose soil after plowing. The spraying assembly 9 starts synchronously. The delivery pump 907 draws the repair agent from the storage tank 906 through the input pipe 908, and delivers it to the spraying pipe 901 through the output pipe 909. Then, the nozzle 902 atomizes the agent and sprays it precisely onto the mixing area of ​​the rotating blades 7, so that the agent is fully mixed with the soil and the repair effect is improved.

Claims

1. A shallow in-situ mixing remediation device for contaminated soil, comprising a frame (1), characterized in that, A set of fixed sleeves (2) are uniformly fixedly connected to the inclined side wall of the frame (1). Fixed cylinders (3) are fixedly connected inside the fixed sleeves (2). A bearing (4) is fixedly connected to the upper end face of the fixed cylinder (3). A rotating shaft (5) is fixedly connected to the inner side wall of the inner ring of the bearing (4). The bottom end of the rotating shaft (5) passes through the fixed cylinder (3) and is fixedly connected to a rotating cylinder (6). Rotating blades (7) are uniformly fixedly connected to the outer side wall of the rotating cylinder (6). A power assembly (8) for driving the rotating shaft (5) to rotate is provided on the frame (1). A spraying assembly (9) is provided on the frame (1). A bracket (10) is provided on the front side of the fixed sleeves (2). The bracket (10) is fixedly connected to the frame (1). A plow blade (11) is fixedly connected to the bottom end of the bracket (10). An installation assembly (12) is provided at the front end of the frame (1).

2. The shallow in-situ mixing remediation device for contaminated soil according to claim 1, characterized in that, The power assembly (8) includes a first pulley (801) fixed to the top of the rotating shaft (5). Adjacent first pulleys (801) are connected by a first synchronous belt (802). A fixed plate (803) is fixedly connected to the front end of the frame (1). A motor (804) is fixedly connected to the upper surface of the fixed plate (803). A second pulley (805) is fixedly connected to the drive end of the motor (804). The second pulley (805) is connected to the first pulley (801) at the front end by a second synchronous belt (806). A protective cover (807) is provided between the first pulley (801) and the second pulley (805). A support plate (808) is fixedly connected to the inner side wall of the protective cover (807). The bottom end of the support plate (808) is fixedly connected to the upper surface of the frame (1).

3. The shallow in-situ mixing remediation device for contaminated soil according to claim 1, characterized in that, The spraying assembly (9) includes a spraying pipe (901) disposed on the outside of the rotary drum (6). A set of nozzles (902) are uniformly fixedly connected to the spraying pipe (901). Two fixing rings (903) are fixedly connected to the spraying pipe (901). The two fixing rings (903) are fixedly connected to the frame (1) through fixing rods (904). A support plate (905) is fixedly connected inside the frame (1). A storage tank (906) is fixedly connected to the upper end face of the support plate (905). A delivery pump (907) is fixedly connected to the upper end face of the support plate (905). The input end of the delivery pump (907) is connected to and fixedly connected to the storage tank (906) through an input pipe (908). An output pipe (909) is fixedly connected to the output end of the delivery pump (907). The outer end of the output pipe (909) is connected to and fixedly connected to the spraying pipe (901).

4. A shallow in-situ mixing remediation device for contaminated soil according to claim 1, characterized in that, The mounting assembly (12) includes a mounting plate (1201) disposed on the outer side of the front end of the frame (1). A movable seat (1202) is fixedly connected to the top side wall of the mounting plate (1201) near the side wall of the frame (1). A telescopic cylinder (1203) is rotatably connected inside the movable seat (1202). A connecting block (1204) is fixedly connected to the driving end of the telescopic cylinder (1203). A connecting frame (1205) is rotatably connected to the connecting block (1204). The connecting frame (1205) is fixedly connected to the frame (1). Two mating seats (1206) are symmetrically and fixedly connected to the bottom of the mounting plate (1201) near the side wall of the frame (1). A connecting rod (1207) is rotatably connected inside each of the two mating seats (1206). A connecting seat (1208) is rotatably connected to the end of the connecting rod (1207) near the frame (1). The connecting seat (1208) is fixedly connected to the frame (1).

5. A shallow in-situ mixing remediation device for contaminated soil according to claim 1, characterized in that, A vertical plate (13) is fixedly connected to the center of the bottom of the straight side wall of the frame (1), and an auxiliary wheel (14) is rotatably connected to the bottom of the vertical plate (13).

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