Mobile soil leaching treatment equipment for agricultural land remediation

Abstract

The invention relates to the technical field of soil leaching remediation equipment, in particular to movable soil leaching treatment equipment for agricultural land remediation. Comprising a carrier body, a conveying belt and a mixing barrel are fixedly mounted at the top of a frame of the carrier body, a crusher and a crushing mechanism are fixedly mounted at the top of the mixing barrel through a support, the crushing mechanism comprises a shell, rectangular mounting grooves are formed in vertical plates on the left side and the right side of the shell, and mounting shells are fixedly mounted in the mounting grooves through bolts; the crushing rollers of the moving group are driven to do upward arc reciprocating motion along the guide grooves, and meanwhile the crushing rollers of the static group are driven to rotate, so that a shearing space is formed, shearing force is used for replacing rubbing force to crush soil blocks, and meanwhile, upward arc motion is used for jacking up soil to reduce the falling density; therefore, the problems that in the prior art, soil blocks are prone to being rubbed into mud balls, and leaching agents are difficult to permeate are solved.

Description

Technical Field

[0001] This invention relates to the field of soil leaching and remediation equipment technology, and more specifically, to a mobile soil leaching treatment device for agricultural land remediation. Background Technology

[0002] Agricultural land is the foundation for crop growth. When agricultural land is used, the excessive application of chemical fertilizers and pesticides, as well as the indiscriminate discharge of wastewater and waste residue from industrial production, will cause harmful substances in the soil to accumulate more and more, which will affect the normal growth of crops. The agricultural products grown may also be contaminated with pollutants. In order to solve this problem, soil leaching technology has emerged. It can separate pollutants from the soil through chemical spraying.

[0003] Chinese invention patent CN114273414B discloses a mobile soil leaching remediation equipment. The equipment first collects contaminated soil through excavation and conveys it into the device. Large clumps of soil are then initially broken up by a crushing mechanism, followed by a screening mechanism to remove some stones and other impurities. Subsequently, the soil is refined by a grinding or kneading mechanism. At the same time, a leaching agent is sprayed through a spray head to ensure that the agent fully contacts and reacts with the soil to remove pollutants. Finally, after subsequent processes such as stirring, mixing, and solid-liquid separation, the soil remediation is completed, and the clean soil can be backfilled and reused.

[0004] However, the aforementioned patent uses airbags to enclose clumps of soil and grinds them by moving the airbags. This method is similar to manually kneading soil clumps. Contaminated soil usually contains a certain amount of moisture, and there are gaps between the airbags. During the kneading process, the soil clumps are easily kneaded into tight mud balls, making it even more difficult for the rinsing agent to penetrate into the mud balls. As a result, the pollutants cannot be effectively separated, leading to poor remediation results. Summary of the Invention

[0005] This invention provides a mobile soil leaching treatment device for agricultural land remediation. The device uses a combination of a moving part and a stationary part in the crushing mechanism. The moving part's crushing roller moves back and forth along the guide groove in an upward arc, while the stationary part's crushing roller rotates, creating a shearing space. Shearing force replaces kneading force to break up soil clods. At the same time, the upward arc motion lifts up the soil to reduce its falling density, thereby solving the problems mentioned in the background art where soil clods are easily crushed into mud balls and leaching agents have difficulty penetrating.

[0006] To achieve the above objectives, a mobile agricultural land remediation soil leaching treatment device includes a carrier body. A conveyor belt and a mixing drum are fixedly installed on the top of the carrier body's frame. A crusher and a pulverizing mechanism are fixedly installed on the top of the mixing drum via a bracket.

[0007] The crushing assembly consists of alternating moving and stationary groups, which are arranged sequentially vertically. In this embodiment, there are two moving groups and two stationary groups. Both the moving and stationary groups consist of multiple crushing rollers arranged in parallel. The number of crushing rollers in the moving group is one more than that in the corresponding stationary group. Taking the upper moving group as an example, the middle stationary group as an example, the moving group as an example, the middle stationary group as an example, and the lower moving group as an example, so that the crushing rollers of the moving and stationary groups form a complete and continuous shearing surface.

[0008] During crushing, soil clods fall from the funnel-shaped cavity above due to their own weight, landing on top of the crushing assembly. At this time, the driving component moves upward in an arc, reciprocating left and right (e.g., ...). Figure 4 As shown in F1, this upward arc movement creates a dynamic shearing space between the moving and stationary crushing rollers, continuously shearing and breaking down the falling soil clods. Compared to traditional kneading methods, the shearing force can quickly destroy the agglomerated structure of the soil clods, preventing the formation of mud balls and refining the soil into loose granules.

[0009] On the other hand, the upward arc movement can lift the soil between the crushing rollers during the crushing process, which slows down the falling speed of the soil and reduces the amount of soil entering the subsequent process at one time. Ultimately, this reduces the density of the soil falling from the funnel, making it easier for the leaching agent to penetrate. Compared with the prior art, the beneficial effects of the present invention are as follows: By setting up the crushing components in the crushing mechanism, and through the cooperation of the moving group and the stationary group, the crushing roller of the moving group moves back and forth along the guide groove in an upward arc, while driving the crushing roller of the stationary group to rotate, forming a shearing space. The shearing force replaces the kneading force, which can quickly break down the soil clump structure, thereby preventing the soil clumps from being rolled into mud balls. Moreover, the upward arc motion trajectory can lift the soil upward during the crushing process, which not only slows down the soil falling speed, but also reduces the amount of soil falling at one time, effectively reducing the soil falling density, allowing the atomized leaching agent to fully penetrate into the soil particles, and improving the reaction efficiency between the agent and pollutants. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is an enlarged structural schematic diagram of the crushing mechanism in this invention; Figure 3 This is a schematic cross-sectional view of the shell structure in this invention; Figure 4 This is a schematic diagram of the process structure when the pulverizing component is used in this invention; Figure 5 This is an enlarged structural schematic diagram of the crushing roller in this invention; Figure 6 This is an enlarged structural schematic diagram of the mounting shell in this invention; Figure 7 This is a schematic diagram of the installation structure of the crushing roller in this invention; Figure 8 for Figure 7 Enlarged structural diagram at point A in the middle; Figure 9 This is a schematic diagram of the installation location of the water pipe in this invention; Figure 10 This is a schematic diagram showing the usage state of the nozzle in this invention.

[0011] The meanings of the labels in the diagram are as follows: 1. Carrier body; 2. Conveyor belt; 3. Crusher; 31. Screen; 4. Crushing mechanism; 41. Housing; 42. Mounting housing; 421. Guide groove; 422. Mounting hole one; 423. Mounting hole two; 424. Double-sided rack; 43. Crushing assembly; 431. Moving group; 432. Stationary group; 433. Crushing roller; 44. Funnel; 45. Water pipe; 451. Nozzle; 46. Electric push rod; 47. Connecting rod; 48. Gear one; 49. Gear two; 410. Connecting plate; 5. Mixing cylinder. Detailed Implementation

[0012] The technical solutions of this invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0013] Because existing mobile soil washing and remediation equipment uses airbag kneading to refine the soil, it easily turns soil clods containing moisture into mud balls, making it difficult for the washing agent to penetrate the soil.

[0014] Therefore, in view of the above-mentioned problems, the present invention discloses a mobile soil leaching treatment device for agricultural land remediation, with reference to... Figure 1 As shown, the vehicle includes a main body 1, which consists of a high-strength steel frame and off-road wheels at the bottom, allowing it to move smoothly in muddy farmland. A conveyor belt 2 and a mixing drum 5 are fixedly installed on the top of the frame of the main body 1. The conveyor belt 2 is used to continuously transport the excavated and collected soil to be remediated. The mixing drum 5 is used to fully mix and react the crushed soil with the leaching agent. A crusher 3 and a crushing mechanism 4 are fixedly installed on the top of the mixing drum 5 via a bracket. The crusher 3 can crush large-sized lumps of soil. The crushing mechanism 4 is located directly below the crusher 3 and is used to further refine the clumps of soil, ensuring that the leaching agent can fully contact the soil particles. A screen 31 is installed at an angle between the crusher 3 and the crushing mechanism 4 via a bracket. The screen 31 is angled to facilitate the separation of stones and other impurities in the soil.

[0015] During use, the conveyor belt 2 continuously transports the excavated contaminated soil to the feed inlet of the crusher 3. After being crushed by the crusher 3, the soil falls onto the screen 31 and then enters the pulverizing mechanism 4. The soil clods entering the pulverizing mechanism 4 are sheared and crushed, then fully mixed with the sprayed leaching agent, and then fall into the mixing drum 5 for deep stirring reaction. Finally, the soil is discharged from the outlet of the mixing drum 5. After subsequent solid-liquid separation treatment, the remediated soil is backfilled into the farmland.

[0016] Among them, conveyor belt 2, crusher 3 and mixing drum 5 are all existing mature equipment, and their specific structures and working principles have been widely used in the field of soil remediation, so they will not be described in detail here.

[0017] The crushing mechanism 4 will be disclosed in detail below, see reference. Figure 2-3 As shown, the crushing mechanism 4 includes a housing 41, which is fixedly installed at the bottom of the screen 31. The housing 41 is a rectangular housing with two sets of oppositely distributed inclined plates welded inside. The two sets of inclined plates form two funnel-shaped cavities: the feed inlet of the upper funnel-shaped cavity is connected to the discharge end of the screen 31 to collect soil clods before crushing and prevent them from scattering; the lower funnel-shaped cavity is used to collect the crushed soil and guide it to fall accurately. Rectangular mounting grooves are opened on the left and right side plates of the housing 41. Mounting shells 42 are fixedly installed in the mounting grooves by bolts. The mounting shells 42 are rectangular steel structures and are located between the two funnel-shaped cavities. The crushing component 43 is movably installed between the two mounting shells 42.

[0018] refer to Figure 4 As shown, the crushing component 43 is composed of alternating moving groups 431 and stationary groups 432, which are distributed sequentially vertically. In this embodiment, two groups of moving groups 431 and two groups of stationary groups 432 are provided. Both moving groups 431 and stationary groups 432 are composed of multiple crushing rollers 433 arranged in parallel. The number of crushing rollers 433 in the moving group 431 is one more than that in the corresponding stationary group 432 (for example, three in the upper moving group 431, two in the middle stationary group 432, and three in the lower moving group 431), so that the crushing rollers 433 in the moving group 431 and the stationary group 432 form a complete and continuous shearing surface.

[0019] During crushing, the soil clods fall from the upper funnel-shaped cavity under their own weight and land on top of the crushing component 43. At this time, the driving moving assembly 431 moves in an upward arc, reciprocating left and right (e.g., ...). Figure 4 As shown in F1, this upward arc movement creates a dynamic shearing space between the moving crushing roller 433 and the stationary crushing roller 433, continuously shearing and crushing the falling soil clods. Compared to the traditional kneading method, the shearing force can quickly destroy the agglomerated structure of the soil clods, prevent the formation of mud balls, and refine the soil into loose granules.

[0020] On the other hand, the upward arc movement can lift the soil between the crushing rollers 433 upward during the crushing process, which not only slows down the falling speed of the soil, but also reduces the amount of soil entering the subsequent process at one time, ultimately reducing the density of the soil falling from the funnel 44, which is more conducive to the penetration of the leaching agent.

[0021] Meanwhile, when the moving group 431 moves, the crushing roller 433 in the stationary group 432 will rotate synchronously, which can guide the falling soil and allow the soil to enter the shearing zone more evenly.

[0022] Among them, the crushing roller 433 is an irregular cylindrical shape, for reference. Figure 5 As shown, it is composed of multiple conical columns of the same shape that are coaxially fixedly connected. The large ends of adjacent conical columns are fixedly connected to each other, and the small ends are fixedly connected to each other, forming an alternating structure of "coarse-fine-coarse-fine". This structure allows multiple raised shearing blades to be formed on the surface of the crushing roller 433. Compared with the traditional standard cylindrical roller, the crushing force is greatly improved. In addition, the conical columns of the upper and lower adjacent crushing rollers 433 are staggered, that is, the coarse section of the upper crushing roller 433 corresponds to the fine section of the lower crushing roller 433, ensuring that the gap between the upper and lower crushing rollers 433 is uniform after installation, preventing soil clods from passing through the gap and ensuring the crushing effect.

[0023] Both ends of the crushing roller 433 are fixedly connected to the support shaft by welding. The outer ends of the support shafts at both ends of the crushing roller 433 of the moving group 431 are fixedly connected to the connecting rod 47. The end of the connecting rod 47 is fixedly installed with gear 48. The outer ends of the support shafts at both ends of the crushing roller 433 of the stationary group 432 are fixedly connected to gear 49.

[0024] The drive structure of the crushing roller 433 is disclosed in detail below. (Refer to...) Figure 6 As shown, the inner wall of the mounting housing 42 is provided with multiple guide grooves 421, mounting hole one 422 and mounting hole two 423. Mounting hole two 423 is located at the bottom of guide groove 421, and mounting hole one 422 is located at the bottom of mounting hole two 423. The support shaft of the crushing roller 433 of the moving group 431 is slidably installed in the guide groove 421. The arc trajectory of the guide groove 421 is adapted to the moving trajectory of the moving group 431. The support shaft of the crushing roller 433 of the stationary group 432 is rotatably installed in mounting hole one 422. Gear one 48 is rotatably installed inside mounting hole two 423 to ensure stable meshing and transmission of gear one 48.

[0025] Next, refer to Figure 7-8 As shown, multiple double-sided racks 424 are slidably installed inside the mounting housing 42. The double-sided racks 424 have teeth on both the upper and lower sides. Gear 1 48 is located above the double-sided racks 424 and meshes with them, while gear 2 49 is located below the double-sided racks 424 and meshes with them, forming a complete transmission chain.

[0026] For details, please refer to the following: Figure 8 As shown, during use, by controlling multiple double-sided racks 424 to move to the left (as shown in F1), the gear 48 rotates clockwise (as shown in F2). Through the transmission action of the connecting rod 47, the crushing roller 433 of the moving group 431 moves in an arc along the guide groove 421 (as shown in F3).

[0027] At the same time, when the double-sided rack 424 moves to the left, it will drive the gear 49 to rotate counterclockwise (as shown in F4), which will drive the crushing roller 433 of the stationary group 432 to rotate. This will enable the crushing roller 433 of the stationary group 432 to cooperate with the crushing roller 433 of the moving group 431 to form a dynamic shearing space, thereby achieving continuous shearing and crushing of soil clods. At the same time, the soil will be lifted upward during the movement, reducing the density of falling soil.

[0028] Next, refer to Figure 9 As shown, a connecting plate 410 is slidably mounted on the rear end of the housing 41. The connecting plate 410 is a rectangular plate. The rear end of the double-sided rack 424 passes through the side wall of the housing 42 and is fixedly connected to the connecting plate 410. An electric push rod 46 is fixedly mounted on the frame at the top of the vehicle body 1 via a bracket. The extended end of the electric push rod 46 is fixedly connected to the connecting plate 410 via a coupling.

[0029] In use, the controller controls the telescopic rod of the electric push rod 46 to move back and forth quickly, driving the connecting plate 410 to move back and forth along the slide rail at the rear end of the housing 41. The connecting plate 410 simultaneously drives all double-sided racks 424 to move back and forth, thereby driving the crushing roller 433 of the moving group 431 and the crushing roller 433 of the stationary group 432 to work together to form a continuous shearing space and efficiently crush the falling soil clods.

[0030] After the soil is crushed, it is in a loose state. At this point, spraying the washing agent can achieve maximum contact. Therefore, refer to... Figure 9 As shown, a water pipe 45 is fixedly installed at the bottom of the housing 41 by a buckle. The water pipe 45 is a U-shaped PVC pipe, and multiple nozzles 451 are evenly installed on its outer wall. The nozzles 451 are fan-shaped atomizing nozzles, which are set at an angle downwards and spray in the direction below the outlet of the housing 41 to ensure that the atomized agent can fully contact the falling loose soil.

[0031] A funnel 44 is fixedly installed at the bottom of the shell 41 by bolts, and the discharge end of the funnel 44 is connected to the inlet of the mixing cylinder 5.

[0032] For details, please refer to the following: Figure 10As shown, after the soil clods are sheared and crushed by the crushing component 43 inside the shell 41, the loose and low-density soil particles fall from the funnel-shaped cavity below. At this time, the rinsing agent is pressurized and delivered to each nozzle 451 by an external water pump (not marked in the figure). The nozzle 451 atomizes the agent and sprays it obliquely downward. The atomized agent droplets come into full contact with the falling soil particles, dissolving the pollutants adsorbed in the soil.

[0033] Subsequently, the mixture of soil and pesticide is collected through funnel 44 and falls into mixing cylinder 5. The double helical agitator of mixing cylinder 5 rotates at a preset speed to stir the mixture evenly, so that the pesticide reacts fully with the pollutants in the soil. After the reaction is completed, the mixture is discharged through the outlet of mixing cylinder 5. The discharged mixture is subjected to solid-liquid separation treatment, and finally the remediated soil is backfilled into the farmland.

[0034] Working principle: The main body 1 of the carrier is moved to the designated area, and the conveyor belt 2 transports the contaminated soil to the crusher 3 for crushing. After the impurities are separated by the screen 31, the soil clods enter the crushing mechanism 4. The electric push rod 46 drives the connecting plate 410 to drive the double-sided rack 424 to move back and forth. Through the transmission of gear 1 48 and gear 2 49, the moving group 431 crushing roller 433 moves along the arc of the guide groove 421, forming a shearing space with the rotating stationary group 432 crushing roller 433, which shears the soil clods into loose low-density particles. Then, the nozzle 451 sprays atomized agent to mix with the soil. The mixture enters the mixing cylinder 5 through the funnel 44 for deep stirring and reaction. Finally, after discharge, solid and liquid separation is achieved, and qualified soil is backfilled.

[0035] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A mobile soil leaching treatment device for agricultural land remediation, comprising a carrier body (1), wherein a conveyor belt (2), a crusher (3), and a mixing drum (5) are fixedly installed on the carrier body (1), characterized in that: A crushing mechanism (4) is installed between the crusher (3) and the mixing drum (5), and a screen (31) is inclinedly arranged between the crusher (3) and the crushing mechanism (4). The crushing mechanism (4) includes a housing (41), mounting shells (42) are installed on both sides of the housing (41), and a crushing component (43) is slidably installed between the two mounting shells (42). The crushing assembly (43) includes multiple alternating moving groups (431) and stationary groups (432), which are arranged in sequence along the vertical direction. Both the moving groups (431) and the stationary groups (432) are composed of multiple crushing rollers (433), and a shearing space is formed between adjacent moving groups (431) and stationary groups (432). When the soil block falls into the shearing space, the moving group (431) moves and works with the stationary group (432) to shear and break the soil block.

2. The mobile agricultural land remediation soil leaching treatment equipment according to claim 1, characterized in that: Both ends of the crushing roller (433) are fixedly connected to support shafts. Both ends of the support shafts of the crushing roller (433) of the moving group (431) are fixedly connected to connecting rods (47). Gear 1 (48) is fixedly installed at the end of the connecting rod (47). Both ends of the support shafts of the crushing roller (433) of the stationary group (432) are fixedly connected to gear 2 (49).

3. The mobile agricultural land remediation soil leaching treatment equipment according to claim 2, characterized in that: The inner wall of the mounting shell (42) is provided with multiple guide grooves (421), mounting hole one (422) and mounting hole two (423). The mounting hole two (423) is located at the bottom of the guide groove (421), and the mounting hole one (422) is located at the bottom of the mounting hole two (423). During the movement of the moving group (431), the crushing roller (433) moves along the guide groove (421) to lift up the soil, thereby reducing the amount of soil falling and reducing the soil falling density.

4. The mobile agricultural land remediation soil leaching treatment equipment according to claim 3, characterized in that: The crushing roller (433) support shaft of the moving group (431) is slidably installed in the guide groove (421), the crushing roller (433) support shaft of the stationary group (432) is rotatably installed in the first mounting hole (422), and the first gear (48) is rotatably installed inside the second mounting hole (423).

5. The mobile agricultural land remediation soil leaching treatment equipment according to claim 2, characterized in that: Multiple double-sided racks (424) are slidably mounted inside the mounting housing (42). Gear one (48) is located above the double-sided rack (424) and meshes with it, while gear two (49) is located below the double-sided rack (424) and meshes with it.

6. The mobile agricultural land remediation soil leaching treatment equipment according to claim 1, characterized in that: The crushing roller (433) is an irregular column, which is composed of multiple conical columns of the same shape connected coaxially. The same ends of adjacent conical columns are fixedly connected, and the conical columns of the crushing roller (433) that are adjacent to each other are staggered.

7. The mobile agricultural land remediation soil leaching treatment equipment according to claim 5, characterized in that: A connecting plate (410) is slidably mounted on the rear end of the housing (41), and the rear end of the double-sided rack (424) penetrates the side wall of the housing (42) and is fixedly connected to the connecting plate (410).

8. The mobile agricultural land remediation soil leaching treatment equipment according to claim 7, characterized in that: An electric push rod (46) is fixedly installed on the top of the vehicle body (1), and the extended end of the electric push rod (46) is fixedly connected to the connecting plate (410).

9. The mobile agricultural land remediation soil leaching treatment equipment according to claim 1, characterized in that: A water pipe (45) is fixedly installed at the bottom of the housing (41). The water pipe (45) is U-shaped. A nozzle (451) is fixedly installed on the outer wall of the water pipe (45). The nozzle (451) is inclined and its spraying direction is towards the lower part of the outlet of the housing (41).

10. The mobile agricultural land remediation soil leaching treatment equipment according to claim 1, characterized in that: A funnel (44) is fixedly installed at the bottom of the shell (41), and the discharge end of the funnel (44) is connected to the inlet of the mixing cylinder (5).

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