Irrigation device for heavy metal contaminated soil remediation

Abstract

The invention solves the problem that deep soil is not easy to contact with remediation liquid during contaminated soil remediation irrigation, and relates to the technical field of soil remediation irrigation, in particular to an irrigation device for heavy metal contaminated soil remediation, which comprises a liquid guide assembly and a soil shoveling assembly mounted on a cart, a soil turning mechanism in transmission connection with the soil shoveling assembly is arranged on the front side of the cart, a spray head set located below the rear side of the soil shoveling assembly is installed on the cart, the output end of the liquid guiding assembly communicates with the spray head set and the soil turning mechanism, the soil turning mechanism comprises a hollow cylinder, and a plurality of water guiding grooves are formed in the bottom of the hollow cylinder. The two ends of the hollow cylinder are connected with a solid column and a guide-in pipe respectively, sealing sleeves are installed on the outer surface of the solid column and the outer surface of the guide-in pipe, butt joint rings are arranged on the outer surfaces of the two sealing sleeves in a sleeving mode, and a straight cylinder ring arranged on the outer side of the hollow cylinder in a sleeving mode is connected between the two butt joint rings. The surface of the polluted soil can be broken open, a repairing agent is sprayed to the deep layer of the polluted soil, and the repairing effect on the deep layer of the soil is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of soil remediation irrigation, in particular to an irrigation device for remediating heavy metal polluted soil. Background Art

[0002] Heavy metal pollution has a serious impact on soil and water ecosystems. Once heavy metals such as lead, mercury, cadmium, and chromium enter the soil, they may flow into groundwater and surface water through soil water, further polluting water sources and affecting the health of plants, animals, and humans. In addition, heavy metal pollution causes changes in the physical and chemical properties of the soil, such as soil acidity (pH), salinity, and organic matter content, which will affect plant growth and soil fertility. In severe cases, it will lead to soil degradation and affect agricultural production.

[0003] Conventional soil remediation irrigation devices usually consist of basic structures such as a frame, a remediation liquid storage structure, and a spraying structure. The remediation liquid sprayed through the spraying structure usually covers the surface of the contaminated soil, while many heavy metal pollutants may exist in the deeper layers of the soil. Therefore, the remediation liquid may be unevenly distributed in the soil, resulting in insufficient remediation effect in the deep layers. Summary of the invention

[0004] In view of the shortcomings of the prior art, the purpose of the present invention is to provide an irrigation device for heavy metal contaminated soil remediation, so as to solve the problem that deep soil is not easy to contact with the remediation liquid during contaminated soil remediation irrigation mentioned in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a watering device for the remediation of heavy metal contaminated soil, comprising a liquid guide assembly, and also comprising a shovel assembly installed on a cart, a soil turning mechanism which is transmission-connected to the shovel assembly is provided on the front side of the cart, the shovel assembly and the soil turning mechanism are used in conjunction with each other to break the surface layer of the contaminated soil and transport the broken soil upward to the highest point for falling, a nozzle group located below the rear side of the shovel assembly is installed on the cart, and the output end of the liquid guide assembly is respectively connected to the nozzle group and the soil turning mechanism;

[0006] The soil-turning mechanism includes a hollow cylinder, a plurality of water guide grooves are provided at the bottom of the hollow cylinder, a solid column and an inlet pipe are respectively connected to the two ends of the hollow cylinder, sealing sleeves are installed on the outer surfaces of the solid column and the inlet pipe, docking rings are provided on the outer surfaces of the two sealing sleeves, a straight cylinder ring sleeved on the outer side of the hollow cylinder is connected between the two docking rings, three rows of crushing shovels are installed on the outer surface of the straight cylinder ring, and three groups of pouring components are connected to the outer surface of the straight cylinder ring, which are used to guide the repair liquid in the hollow cylinder to below the broken surface soil when the crushing shovel breaks the surface of the contaminated soil.

[0007] Preferably, the pouring assembly includes a plurality of branch pipes plugged into a straight ring, a transition pipe is sleeved on the outer surface of the branch pipe, a diffusion nozzle is connected to the bottom of the transition pipe, and elastic structures are installed on the plurality of branch pipes.

[0008] Preferably, overflow outlets are provided on both sides of the branch pipe surface, and a plurality of limiting grooves are provided on the surface of the branch pipe, and the limiting grooves are located above the overflow outlets.

[0009] Preferably, the transition pipe is composed of a casing and an expansion pipe, the inner diameter of the casing is consistent with the outer diameter of the branch pipe, and the inner diameter of the expansion pipe is larger than the outer diameter of the branch pipe.

[0010] Preferably, a plurality of raised blocks are installed on the inner wall of the sleeve, and the raised blocks are slidably inserted into the inner part of the limiting groove. When the bottom of the raised block fits with the bottom wall of the limiting groove, the bottom of the sleeve is lower than the bottom of the overflow port.

[0011] Preferably, the inner diameter of the expansion tube gradually decreases from the middle to the bottom, and the discharge end of the diffusion nozzle is flat.

[0012] Preferably, the elastic structure includes a horizontal bar connected to the surfaces of several transition pipes, the horizontal bar is connected to several telescopic springs, one end of the several telescopic springs is connected to an extension plate, and one end of the extension plate is connected to the surface of the branch pipe.

[0013] Preferably, extrusion bars are installed at both ends of the cross bar, and the length of the extrusion bars is half of the length of the crushing shovel.

[0014] Preferably, the earth-shoveling assembly includes two steel frames connected to the top extension end of the cart, two gear columns are rotatably installed between the two steel frames, chain plate conveyor belts are installed on the outer surfaces of the two gear columns, a driving motor connected to the uppermost gear column is installed on the steel frame, and a number of earth-shoveling plates are installed on the chain plate conveyor belts.

[0015] Preferably, the shoveling plate is composed of a reinforcement part and a shoveling part, and an inwardly recessed area is formed from the middle of the connection between the reinforcement part and the shoveling part to the edge of the shoveling plate.

[0016] By means of the above technical solution, the present invention provides an irrigation device for remediation of heavy metal contaminated soil, which has at least the following beneficial effects:

[0017] 1. When the shoveling assembly of the present invention is in operation, the surface layer of the contaminated soil is broken in advance by the soil turning mechanism to break it into small pieces, and then the shoveling assembly is used to shovel away the broken soil and transfer it upward, thereby increasing the permeability of the soil and allowing the pollutants to be more exposed to the repair agent for removal.

[0018] 2. When the present invention breaks the surface of the contaminated soil, the repair liquid in the hollow cylinder will be sprayed outward along the irrigation component adjusted to the bottom. The spraying range is below the broken surface soil when the crushing shovel breaks the soil, so that the repair liquid can better contact the metal pollutants, thereby accelerating the removal or transformation process of the pollutants.

[0019] 3. The spraying structure composed of the branch pipe, transition pipe and diffusion nozzle in the present invention will only generate an upward squeezing force on the telescopic spring and the horizontal bar when one end of the pouring component touches the ground, causing the sleeve in the transition pipe to completely leave the range of the overflow port, and the expansion pipe is opened when it is adjusted to the outside of the height of the overflow port, and is in a closed state at other times, thereby effectively saving the amount of repair agent.

[0020] 4. The reinforcing part and the shoveling part of the shoveling plate in the present invention form an inwardly concave area from the middle of the connection between the two to the edge of the shoveling plate, which can effectively ensure that the contaminated soil fragments shoveled by the shoveling plate do not fall randomly. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 It is a schematic diagram of the steel frame and the position structure of the steel frame of the present invention;

[0024] Figure 3 It is a schematic diagram of the split structure of the soil turning mechanism of the present invention;

[0025] Figure 4 It is a schematic diagram of the planar structure of the soil turning mechanism of the present invention;

[0026] Figure 5 It is a schematic diagram of the installation structure of the elastic structure and the branch pipe of the present invention;

[0027] Figure 6 This is a schematic diagram of the disassembled structure of the pouring assembly of the present invention;

[0028] Figure 7 It is a structural schematic diagram of the earth-shoveling assembly of the present invention;

[0029] Figure 8 It is a structural schematic diagram of the earth-moving plate of the present invention.

[0030] In the figure: 1. cart; 2. liquid guide assembly; 3. earth-shoveling assembly; 301. steel frame; 302. gear column; 303. chain plate conveyor belt; 304. earth-shoveling plate; 3041. reinforcement part; 3042. earth-shoveling part; 4. earth-turning mechanism; 401. hollow cylinder; 4011. water guide groove; 402. inlet pipe; 403. sealing sleeve; 404. docking ring; 405. straight tube ring; 406. crushing shovel; 5. sprinkler group; 6. irrigation assembly; 601. branch pipe; 6011. overflow port; 6012. limit groove; 602. transition pipe; 6021. sleeve; 6022. expansion pipe; 603. diffusion sprinkler; 604. elastic structure; 6041. horizontal bar; 6042. telescopic spring; 6043. extension plate. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. In the description of the present invention, it should be understood that the orientations or positional relationships indicated by the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0032] Embodiment 1

[0033] See also Figure 1-Figure 8This embodiment proposes a watering device for the remediation of heavy metal contaminated soil, which can effectively remediate the deep layer of contaminated soil. The cart 1 and the liquid guide assembly 2 included in the watering device are basically consistent with the functions and structures of the prior art. The cart 1 is provided with the power supply required for the operation of the device. A shovel assembly 3 is installed on the cart 1. The front side of the cart 1 is provided with a soil turning mechanism 4 that is transmission-connected to the shovel assembly 3. The shovel assembly 3 and the soil turning mechanism 4 are used in conjunction with each other to break the surface layer of the contaminated soil and transport the broken soil upward to the highest point for falling. The cart 1 is provided with a nozzle group 5 located below the rear side of the shovel assembly 3. The output end of the liquid guide assembly 2 is connected to the nozzle group 5 and the soil turning mechanism 4 respectively. The liquid guide assembly 2 is mainly composed of a liquid storage tank, a liquid pump and a pipeline, and is intended to guide the repair liquid in the liquid storage tank along the pipeline into the inner cavity of the nozzle group 5 and the soil turning mechanism 4. The soil-turning mechanism 4 includes a hollow cylinder 401, a plurality of water guide grooves 4011 are opened at the bottom of the hollow cylinder 401, and the two ends of the hollow cylinder 401 are respectively connected with a solid column and an inlet pipe 402, and the outer surfaces of the solid column and the inlet pipe 402 are installed with sealing sleeves 403, and the outer surfaces of the two sealing sleeves 403 are sleeved with docking rings 404, and a straight cylinder ring 405 sleeved on the outside of the hollow cylinder 401 is connected between the two docking rings 404, and three rows of crushing shovels 406 are installed on the outer surface of the straight cylinder ring 405, and the outer surface of the straight cylinder ring 405 is connected with three groups of pouring components 6, which are used to guide the repair liquid in the hollow cylinder 401 to the bottom of the broken surface soil when the crushing shovel 406 breaks the surface of the contaminated soil.

[0034] In actual application, by pushing the cart 1 and cooperating with the operation of the shovel assembly 3, the soil turning mechanism 4 can be driven to break the soil surface on the front side of the shovel assembly 3 and break it into small pieces. Subsequently, the relevant structure in the shovel assembly 3 is cooperated to scoop up the broken pieces and transmit them upward, and then they fall down along the top of the rear side of the shovel assembly 3.

[0035] The nozzle group 5 is mainly composed of a straight tube and a plurality of refined nozzles installed on the straight tube, and is intended to spray the repair liquid transported by the liquid guide component 2 along the plurality of refined nozzles into the broken soil falling down from the top of the rear side of the shoveling component 3, to ensure that the surface broken soil that is shoveled and transported can fully contact with the repair liquid, thereby ensuring the effectiveness of subsequent repair of the surface soil.

[0036] In addition, part of the repair liquid discharged through the discharge end of the pipeline in the liquid guide component 2 is transported to the interior of the soil turning mechanism 4, enters the inner cavity of the hollow cylinder 401 through the inlet pipe 402, and seeps downward through a number of water guide grooves 4011 to the gap between the hollow cylinder 401 and the straight cylinder ring 405.

[0037] The outer surfaces of the two sealing sleeves 403 and the earth-shoveling assembly 3 are connected by a transmission structure, so that when the earth-shoveling assembly 3 is in operation, the transmission structure can drive the overall structure consisting of the two sealing sleeves 403 and the straight tube ring 405 to rotate in the same direction, and then control the three rows of crushing shovels 406 on the surface of the straight tube ring 405 to follow the rotation, breaking the surface layer of the contaminated soil on the front side of the earth-shoveling assembly 3 and breaking it into small pieces.

[0038] Following the above, when each row of crushing shovels 406 rotates to the bottom with the straight ring 405 to break the ground, the repair liquid that leaks into the gap between the hollow cylinder 401 and the straight ring 405 through the water guide groove 4011 will be sprayed outward along the irrigation component 6 that is also adjusted to the bottom. The spraying range is below the surface soil that is broken when the crushing shovel 406 breaks the ground, so that the re-liquid can better contact the metal pollutants, so that the removal or conversion process of the pollutants is accelerated. Especially in areas with deep metal pollutants, this method can effectively prevent the repair liquid from staying only on the surface, thereby improving the repair effect.

[0039] Embodiment 2

[0040] Following the above-mentioned embodiment 1, the irrigation component 6 usually needs to be kept unblocked at all times so that the repair liquid inside the hollow cylinder 401 can be discharged along the irrigation component 6. In actual application, the repair liquid only needs to be added at the moment when the crushing shovel 406 breaks the surface of the contaminated soil. Therefore, the irrigation component 6 is in an unblocked state for a long period of time, which is easy to cause a waste of repair liquid. In order to adjust the unblocking and closing of the internal channel of the irrigation component 6 as needed. Figure 1-Figure 6 As shown, the pouring assembly 6 includes a plurality of branch pipes 601 plugged into the straight ring 405, and overflow ports 6011 are provided on both sides of the surface of the branch pipes 601. A plurality of limiting grooves 6012 are provided on the surface of the branch pipes 601, and the limiting grooves 6012 are located above the overflow ports 6011. A transition pipe 602 is sleeved on the outer surface of the branch pipes 601, and the transition pipe 602 is composed of a sleeve 6021 and an expansion pipe 6022. The inner diameter of the sleeve 6021 is consistent with the outer diameter of the branch pipe 601, and the inner diameter of the expansion pipe 6022 is larger than the outer diameter of the branch pipe 601. A plurality of protrusions are installed on the inner wall of the sleeve 6021, and the protrusions are slidably plugged into the inside of the limiting grooves 6012. When the bottom of the protrusions fits the bottom wall of the limiting grooves 6012, the bottom of the sleeve 6021 is lower than the bottom of the overflow port 6011. The bottom of the transition pipe 602 is connected to a diffusion nozzle 603 , and a plurality of branch pipes 601 are installed with an elastic structure 604 .

[0041] The elastic structure 604 includes a horizontal bar 6041 connected to the surface of a plurality of transition pipes 602, a plurality of telescopic springs 6042 are connected to the horizontal bar 6041, one end of the plurality of telescopic springs 6042 is connected to an extension plate 6043, and one end of the extension plate 6043 is connected to the surface of the branch pipe 601, and extrusion bars are installed at both ends of the horizontal bar 6041, and the length of the extrusion bars is half the length of the crushing shovel 406.

[0042] Following the above-mentioned related structures, the liquid guide component 2 conveys the repair liquid to the inner cavity of the hollow cylinder 401 through the liquid pump and the pipeline, and then flows downward along the water guide groove 4011 to the gap between the hollow cylinder 401 and the straight ring 405. After that, when the straight ring 405 rotates to drive the irrigation component 6 to adjust to the bottom, the end of the extrusion bar in the elastic structure 604 is gradually subjected to the extrusion force from the ground, and the extrusion force is transmitted upward, which will cause the telescopic spring 6042 to contract inward, and at the same time drive a number of transition pipes 602 through the horizontal bar 6041 to move upward along the surface of the branch pipe 601. In this process, the protrusion block slides upward along the internal path of the limit groove 6012 until the top of the protrusion block fits the top wall of the limit groove 6012, and then the sleeve 6021 in the transition pipe 602 is completely out of the range of the overflow port 6011, and the expansion pipe 6022 is adjusted to the outside of the height of the overflow port 6011.

[0043] Afterwards, the repair liquid that flows downward in the gap between the hollow tube 401 and the straight ring 405 to the plurality of branch tubes 601 will continue to flow downward along the overflow port 6011 to the inside of the expansion tube 6022 until it is sprayed downward along the diffusion nozzle 603 .

[0044] Based on the above process, it can be known that the transition pipe 602 and the branch pipe 601 in the pouring assembly 6 are in a sliding connection state, and the contraction of the two begins when the bottom of the extrusion bar is subjected to the extrusion force from the ground, and the extension between the two depends on the elastic performance and reset function of the telescopic spring 6042 itself.

[0045] Embodiment 3

[0046] The inner diameter of the expansion tube 6022 gradually decreases from the middle to the bottom, thereby increasing the flow rate of the repair liquid flowing downward. The discharge end of the diffusion nozzle 603 is flat, thereby increasing the spraying and diffusion area.

[0047] Embodiment 4

[0048] like Figure 1 and Figure 7-Figure 8As shown, the earth-shoveling assembly 3 includes two steel frames 301 connected to the top extension end of the cart 1, two gear columns 302 are rotatably installed between the two steel frames 301, and chain plate conveyor belts 303 are installed on the outer surfaces of the two gear columns 302. A driving motor connected to the uppermost gear column 302 is installed on the steel frame 301, and the chain plate conveyor belts 303 are arranged in an inclined manner, and a plurality of earth-shoveling plates 304 are installed on the chain plate conveyor belts 303. The earth-shoveling assembly 3 is driven by the driving motor. After the driving motor is started, one of the gear columns 302 is controlled to rotate at a uniform speed, and then the chain plate conveyor belt 303 is driven to rotate accordingly, so as to convey the contaminated soil fragments on the chain plate conveyor belt 303 from bottom to top.

[0049] While conveying the soil fragments, the several shovel boards 304 on the surface of the chain conveyor 303 will gradually approach the crushed soil fragments, and then with the continuous rotation of the chain conveyor 303, the ends of the shovel boards 304 begin to cut into the surface layer of the soil fragments and continue to go deeper, and finally gather them up, and with the continuous rotation of the shovel boards 304, the gathered soil fragments are lifted from the ground and transferred to the chain conveyor 303. In addition, since the shovel boards 304 are composed of a reinforcement part 3041 and a shovel part 3042, an inwardly recessed area is formed from the middle of the connection between the reinforcement part 3041 and the shovel part 3042 to the edge of the shovel board 304, which can effectively ensure that the contaminated soil fragments shoveled up by the shovel board 304 do not fall off at will.

[0050] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A watering device for remediation of heavy metal contaminated soil, comprising a liquid conducting component (2), characterized in that: The invention also comprises a shoveling assembly (3) mounted on the cart (1); a soil turning mechanism (4) which is transmission-connected to the shoveling assembly (3) is provided on the front side of the cart (1); the shoveling assembly (3) and the soil turning mechanism (4) are used in conjunction with each other to break the surface layer of the polluted soil and transport the broken soil upward to the highest point for falling; a nozzle group (5) is installed on the cart (1) and is located below the rear side of the shoveling assembly (3); and the output end of the liquid guide assembly (2) is respectively connected to the nozzle group (5) and the soil turning mechanism (4); The soil turning mechanism (4) comprises a hollow cylinder (401), a plurality of water guide grooves (4011) are provided at the bottom of the hollow cylinder (401), a solid column and an introduction pipe (402) are respectively connected to the two ends of the hollow cylinder (401), the outer surfaces of the solid column and the introduction pipe (402) are both installed with sealing sleeves (403), the outer surfaces of the two sealing sleeves (403) are both sleeved with docking rings (404), a straight cylinder ring (405) sleeved on the outer side of the hollow cylinder (401) is connected between the two docking rings (404), three rows of crushing shovels (406) are installed on the outer surface of the straight cylinder ring (405), and three groups of irrigation components (6) are connected to the outer surface of the straight cylinder ring (405), which are used to guide the repair liquid in the hollow cylinder (401) to the bottom of the broken surface soil when the crushing shovel (406) breaks the surface of the contaminated soil.

2. The irrigation device for remediation of heavy metal contaminated soil according to claim 1, characterized in that: The pouring assembly (6) comprises a plurality of branch pipes (601) plugged into a straight ring (405), a transition pipe (602) is sleeved on the outer surface of the branch pipe (601), a diffusion nozzle (603) is connected to the bottom of the transition pipe (602), and an elastic structure (604) is installed on the plurality of branch pipes (601).

3. The irrigation device for remediation of heavy metal contaminated soil according to claim 2, characterized in that: Overflow outlets (6011) are provided on both sides of the surface of the branch pipe (601), and a plurality of limiting grooves (6012) are provided on the surface of the branch pipe (601), and the limiting grooves (6012) are located above the overflow outlets (6011).

4. The irrigation device for remediation of heavy metal contaminated soil according to claim 2, characterized in that: The transition pipe (602) is composed of a casing (6021) and an expansion pipe (6022). The inner diameter of the casing (6021) is consistent with the outer diameter of the branch pipe (601), and the inner diameter of the expansion pipe (6022) is larger than the outer diameter of the branch pipe (601).

5. The irrigation device for remediation of heavy metal contaminated soil according to claim 4, characterized in that: The inner wall of the sleeve (6021) is provided with a plurality of protruding blocks, and the protruding blocks are slidably inserted into the interior of the limiting groove (6012). When the bottom of the protruding blocks fits with the bottom wall of the limiting groove (6012), the bottom of the sleeve (6021) is lower than the bottom of the overflow port (6011).

6. The irrigation device for remediation of heavy metal contaminated soil according to claim 4, characterized in that: The inner diameter of the expansion tube (6022) gradually decreases from the middle to the bottom, and the discharge end of the diffusion nozzle (603) is flat.

7. The irrigation device for remediation of heavy metal contaminated soil according to claim 2, characterized in that: The elastic structure (604) comprises a horizontal bar (6041) connected to the surface of a plurality of transition pipes (602), a plurality of telescopic springs (6042) are connected to the horizontal bar (6041), one end of the plurality of telescopic springs (6042) is connected to an extension plate (6043), and one end of the extension plate (6043) is connected to the surface of the branch pipe (601).

8. The irrigation device for remediation of heavy metal contaminated soil according to claim 7, characterized in that: Both ends of the horizontal bar (6041) are equipped with extrusion bars, the length of which is half the length of the crushing shovel (406).

9. The irrigation device for remediation of heavy metal contaminated soil according to claim 1, characterized in that: The earth-shoveling assembly (3) comprises two steel frames (301) connected to the top extension end of the cart (1), two gear columns (302) are rotatably mounted between the two steel frames (301), chain plate conveyor belts (303) are mounted on the outer surfaces of the two gear columns (302), a driving motor drivingly connected to the uppermost gear column (302) is mounted on the steel frame (301), and a plurality of earth-shoveling plates (304) are mounted on the chain plate conveyor belt (303).

10. The irrigation device for remediation of heavy metal contaminated soil according to claim 9, characterized in that: The shoveling plate (304) is composed of a reinforcement part (3041) and a shoveling part (3042), and an inwardly recessed area is formed from the middle of the connection between the reinforcement part (3041) and the shoveling part (3042) to the edge of the shoveling plate (304).

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