Soil micro-plastic migration simulation test device

Abstract

The utility model relates to the technical field of chemical or physical analysis, in particular to a soil micro-plastic migration simulation test device which comprises a support, a terrain simulation mechanism, a soil compactness simulation mechanism and a rainfall simulation mechanism. The fixed end of the first air cylinder is fixedly arranged on a bottom plate of the support, the movable end of the first air cylinder is hinged to the bearing supporting plate, the soil containing box is arranged on the bearing supporting plate, the soil compactness simulation mechanism comprises a transverse rod and a driving hammer, the driving hammer is erected above the soil containing box through the transverse rod, and the rainfall simulation mechanism comprises a plurality of nozzles. The multiple nozzles are arranged above the soil containing box through a nozzle frame and communicate with the water tank through water pipes. According to the soil micro-plastic migration simulation test device, rainfall simulation, terrain simulation and soil compactness simulation can be integrated in one test device, and different environment test requirements are met, so that the test effect is effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of chemical or physical analysis technology, and in particular to a soil microplastic transport simulation test device. Background Technology

[0002] Although the recycling rate of residual film can reach 90%, more than 10% of the residual film still remains on the ground surface. The residual film left on the ground surface will continue to decompose into microplastic particles. Therefore, understanding the transport law of microplastics in soil is of great significance for realizing the research on soil microplastic removal. It is necessary to design a soil microplastic transport simulation test device in order to improve the plastic film pollution control system and improve soil quality and environmental safety.

[0003] Existing soil microplastic transport simulation test devices can be roughly divided into the following three types: traditional soil column simulation devices, devices that can simulate terrain, and devices that can control soil compaction. Among them, traditional soil column test devices can only simulate water and fertilizer supply, while devices that can simulate terrain and devices that can control soil compaction can only simulate a single environmental variable. They have limited functions and cannot simulate simultaneously. Utility Model Content

[0004] To address the limitation of existing simulation devices that can only simulate a single environmental variable and have limited functionality, this invention provides a soil microplastic transport simulation device, which consists of a terrain simulation mechanism, a soil compaction simulation mechanism, and a rainfall simulation mechanism. It can control multiple environmental variables to meet different experimental needs.

[0005] This invention provides a soil microplastic transport simulation test device, including a support frame, a terrain simulation mechanism, a soil compaction simulation mechanism, and a rainfall simulation mechanism. The terrain simulation mechanism includes a soil placement box, a support plate, and a first cylinder. The fixed end of the first cylinder is fixed to the base plate of the support frame, and the movable end of the first cylinder is hinged to the support plate. The soil placement box is placed on the support plate. The soil compaction simulation mechanism includes a crossbar, a second cylinder, and a hammer. The hammer is mounted above the soil placement box via the crossbar. The second cylinder is located at the top of the support frame, and its movable end is connected to the crossbar. The rainfall simulation mechanism includes several nozzles, which are mounted above the soil placement box via nozzle holders. All nozzles are connected to a water tank via water pipes. The terrain simulation mechanism, soil compaction simulation mechanism, rainfall simulation mechanism, and water tank are all installed inside the support frame. By concentrating environmental variables such as terrain, soil compaction, and rainfall into a single test device for control, more experimental needs can be met simultaneously.

[0006] Furthermore, the support plate is evenly provided with drainage holes. One end of the support plate is rotatably connected to the bracket via a pin, and the other end of the support plate is provided with a hinge seat for connecting the movable end of the first cylinder. The extension and retraction of the first cylinder drives the support plate to rotate around the pin, thereby realizing terrain simulation.

[0007] Furthermore, the support frame is equipped with an adjustment mechanism for adjusting the position of the crossbar, which is positioned above the soil placement box via the adjustment mechanism. The position of the crossbar above the soil placement box is adjusted using the adjustment mechanism.

[0008] Furthermore, the adjustment assembly includes slide rails at both ends of the crossbar, with slide blocks slidably mounted on the slide rails, and the crossbar fixedly mounted at the bottom of the slide blocks. The crossbar's sliding adjustment is achieved through the cooperation of the slide blocks and slide rails.

[0009] Furthermore, the hammer includes a fixed tube and an adjusting tube. The fixed tube has a mounting seat at its end, which is fixedly connected to the crossbar. The adjusting tube has a pressure plate at its end and is threadedly connected to the fixed tube. The height of the hammer can be adjusted by the adjusting tube screwed to the bottom of the fixed tube.

[0010] Furthermore, the nozzles are correspondingly set to the soil placement box, and the nozzles are omnidirectional ball nozzles. The omnidirectional ball nozzles can be rotated to adjust the angle of the nozzles and spray directly onto the soil placement box.

[0011] Furthermore, the two ends of the nozzle frame are fixedly connected to the slide rail, and a ball screw is installed between the crossbar and the nozzle frame.

[0012] Furthermore, the ball screw includes a screw, a motor base, a fixed base, and a slider. A motor frame for mounting the motor base is fixedly arranged between the slide rails. The fixed base is set on the nozzle frame, and the slider is fixedly set on the crossbar.

[0013] The beneficial effects of this utility model are as follows:

[0014] This invention provides a soil microplastic transport simulation test device, which consists of a terrain simulation mechanism, a soil compaction simulation mechanism, and a rainfall simulation mechanism. After the soil is placed in the soil placement box, the soil compaction control mechanism is used to simulate the soil compaction. Then, the rainfall simulation mechanism and the terrain simulation mechanism are activated to realize water and fertilizer transport, which provides power for microplastic transport. It can integrate rainfall simulation, terrain simulation, and soil compaction simulation in one test device to meet different environmental test needs, thereby effectively improving the test results. Attached Figure Description

[0015] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the experimental setup from the first angle;

[0017] Figure 2 This is a schematic diagram of the experimental setup from the second angle;

[0018] Figure 3 This is a schematic diagram of the experimental setup from the third angle;

[0019] Figure 4 This is a structural diagram of the soil placement box and the supporting tray;

[0020] Figure 5 This is a schematic diagram of the hammer's structure;

[0021] In the diagram: 1. Support, 2. Soil placement box, 3. Support plate, 31. Drain hole, 32. Pin, 33. Hinge seat, 4. First cylinder, 5. Crossbar, 6. Hammer, 61. Fixing pipe, 62. Adjusting pipe, 63. Mounting seat, 64. Pressure plate, 7. Nozzle, 8. Nozzle holder, 9. Water tank, 10. Slide rail, 11. Slide block, 12. Screw, 13. Motor base, 14. Fixing seat, 15. Slider, 16. Motor frame, 17. Second cylinder, 18. Vertical rail. Detailed Implementation

[0022] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0023] To achieve the regulation of multiple environmental variables, a soil microplastic transport simulation experimental device was designed, such as... Figure 1 and 2As shown, the system includes a support frame 1, a terrain simulation mechanism, a soil compaction simulation mechanism, and a rainfall simulation mechanism. The terrain simulation mechanism includes a soil placement box 2, a support plate 3, and a first cylinder 4. The fixed end of the first cylinder 4 is fixedly mounted on the base plate of the support frame 1, and the movable end of the first cylinder 4 is hinged to the support plate 3. The soil placement box 2 is placed on the support plate 3. The soil compaction simulation mechanism includes a crossbar 5 and a hammer 6. The hammer 6 is mounted above the soil placement box 2 via the crossbar 5. The rainfall simulation mechanism includes several nozzles 7. The nozzles 7 are mounted above the soil placement box 2 via a nozzle holder 8. All nozzles 7 are connected to a water tank 9 via water pipes. The terrain simulation mechanism, the soil compaction simulation mechanism, the rainfall simulation mechanism, and the water tank 9 are all installed inside the support frame 1.

[0024] The soil microplastic transport simulation device consists of two main parts: a transport module and a simulation module. The transport module includes a soil placement box 2, a water storage tank, and a support frame 1. The simulation system comprises a terrain simulation mechanism, a rainfall simulation mechanism, and a soil compaction simulation mechanism. By controlling different variables, it simulates the transport of soil microplastics in a real environment, overcoming the limitation of traditional soil microplastic transport simulation devices that can only simulate a single variable like moisture, thus fulfilling the requirement of simulating soil microplastic transport in a real environment. The support frame 1 is constructed of an aluminum alloy frame and acrylic, ensuring overall flexibility and ease of observation and control by the experimenter.

[0025] Based on the different terrains in Xinjiang, a terrain simulation mechanism consisting of a support plate 3 and a first cylinder 4 can be used to lift one side of the soil placement box 2 at a certain angle to simulate different soil inclinations and explore their impact on soil microplastic transport. In real farmland soil environments, cultivated land is not flat but has a certain inclination angle. This causes the direction of water transport in the soil to not always be perpendicular to the surface, thus altering the transport of microplastics in this terrain. The purpose of designing the terrain simulation mechanism is to change the inclination angle of the support plate 3 to simulate different surface inclinations, collect different experimental results, and derive the effects of different terrains on the transport patterns of microplastics in the soil.

[0026] The support frame 1 is also equipped with an adjustment assembly for adjusting the position of the crossbar 5, which is mounted above the soil placement box 2 via the adjustment assembly. The adjustment assembly includes slide rails 10 at both ends of the crossbar 5, with sliding seats 11 slidably mounted on the slide rails 10, and the crossbar 5 fixedly mounted on the bottom of the sliding seats 11. To adjust the slide rails 10, fixed seats and vertical rails 18 can also be set at both ends of the slide rails 10. The distance between the slide rails 10 and the soil placement box 2 can be adjusted by sliding the fixed seats in the vertical rails 18, facilitating soil compaction and rainfall simulation operations. A second cylinder 17 is also provided between the crossbar 5 and the top plate of the support frame 1. Through the action of the second cylinder 17, the crossbar 5 is driven to move longitudinally along the vertical rails 18. The cooperation between the fixed seats at both ends of the slide rails 10 and the vertical rails 18 on the support frame 1 improves the stability of the longitudinal movement of the crossbar 5.

[0027] The nozzles 7 of the rainfall simulation mechanism are correspondingly set with the soil placement box 2. The soil placement box 2 is generally equipped with four placement slots, and the nozzles 7 are equipped with four corresponding slots. The nozzles 7 use universal ball nozzles for easy adjustment of the spray angle. The water tank 9, which is connected to the nozzles 7, is placed on the base plate of the support 1. A water pump is also installed on the base plate. The water pump draws water from the water tank 9 and delivers it to the nozzles 7 for spraying through water pipes.

[0028] like Figure 3 As shown, the nozzle frame 8 is fixedly connected to the slide rail 10 at both ends, and a ball screw is installed between the crossbar 5 and the nozzle frame 8. The ball screw is used to position the nozzle frame 8 to meet different rainfall simulation needs.

[0029] Specifically, the ball screw includes a screw 12, a motor base 13, a fixed base 14, and a slider 15. A motor frame 16 for mounting the motor base 13 is fixedly installed between the slide rails 10. The fixed base 14 is mounted on the nozzle frame 8, and the slider 15 is fixedly mounted on the crossbar 5. The motor base 13 is fixedly fixed by the motor frame 16, thus fixing the motor. The output end of the motor is fixedly connected to the screw 12. The motor drives the screw 12 to rotate, thereby adjusting the position of the slider 15 on the screw 12, thus achieving the lateral adjustment of the nozzle frame 8. When not in use, it can be moved next to the soil placement box 2 without affecting the compaction operation of the hammer 6.

[0030] like Figure 4 As shown, drainage holes 31 are evenly distributed on the support plate 3. One end of the support plate 3 is rotatably connected to the bracket 1 via a pin 32, and the other end of the support plate 3 is provided with a hinge seat 33 for connecting the movable end of the first cylinder 4. The first cylinder 4 is hinged to one end of the support plate 3, and the other end of the first cylinder 4 is hinged to the base plate of the bracket 1. The tilt angle of the soil placement box 2 is controlled by the continuous lifting of the first cylinder 4, thereby simulating different terrains.

[0031] like Figure 5As shown, the soil compaction simulation mechanism mainly controls the compaction degree of the soil in the soil placement box 2 to simulate the effect of different soil compaction degrees on microplastic migration. The soil compaction simulation mechanism uses a second cylinder 17 to drive the crossbar 5, which enables the hammers 6 to move up and down to compact the soil. One second cylinder 17 drives four hammers 6 to control different compaction degrees of the soil in different placement troughs. The four hammers 6 are fixed on a crossbar 5. Each hammer 6 includes a fixed tube 61 and an adjusting tube 62. The end of the fixed tube 61 is equipped with a mounting seat 63, which is fixedly connected to the crossbar 5. The end of the adjusting tube 62 is equipped with a pressure plate 64, which is threadedly connected to the fixed tube 61. The height of the pressure plate 64 is adjusted by the threading degree of the fixed tube 61 and the adjusting tube 62. When the second cylinder 17 controls the crossbar 5 to move downward, causing the hammers 6 to fall, different soil compaction degrees are achieved because each hammer 6 is at a different height from the soil surface in the placement trough.

[0032] The above description is illustrative only and not restrictive of this utility model. Those skilled in the art will understand that many modifications, variations or equivalents can be made without departing from the spirit and scope defined by the appended claims, and all such modifications, variations or equivalents will fall within the protection scope of this utility model.

Claims

1. A soil microplastic transport simulation test device, characterized in that: Including the support (1). The terrain simulation mechanism includes a soil placement box (2), a support plate (3), and a first cylinder (4). The fixed end of the first cylinder (4) is fixedly mounted on the base plate of the support (1), and the movable end of the first cylinder (4) is hinged to the support plate (3). The soil placement box (2) is placed on the support plate (3). A soil compaction simulation mechanism, comprising a crossbar (5) and a hammer (6), wherein the hammer (6) is mounted above the soil placement box (2) via the crossbar (5), and The rainfall simulation mechanism includes several nozzles (7), which are mounted on a soil placement box (2) via a nozzle frame (8). Each nozzle (7) is connected to a water tank (9) via a water pipe. The terrain simulation mechanism, soil compaction simulation mechanism, rainfall simulation mechanism and water tank (9) are all installed in the bracket (1).

2. The soil microplastic transport simulation test device according to claim 1, characterized in that: The bearing plate (3) is provided with drainage holes (31) evenly distributed. One end of the bearing plate (3) is rotatably connected to the bracket (1) through a pin (32). The other end of the bearing plate (3) is provided with a hinge seat (33) that can be connected to the movable end of the first cylinder (4).

3. The soil microplastic transport simulation test device according to claim 1, characterized in that: The support (1) is also equipped with an adjustment component for adjusting the position of the crossbar (5), which is mounted above the soil placement box (2) via the adjustment component.

4. The soil microplastic transport simulation test device according to claim 3, characterized in that: The adjustment assembly includes slide rails (10) at both ends of the crossbar (5), and slide blocks (11) are slidably disposed on the slide rails (10). The crossbar (5) is fixedly disposed at the bottom of the slide blocks (11).

5. The soil microplastic transport simulation test device according to claim 1, characterized in that: The hammer (6) includes a fixed tube (61) and an adjusting tube (62). The fixed tube (61) has a mounting seat (63) at its end, which is fixedly connected to the crossbar (5). The adjusting tube (62) has a pressure plate (64) at its end, and the adjusting tube (62) is threadedly connected to the fixed tube (61).

6. The soil microplastic transport simulation test device according to claim 4, characterized in that: The nozzle (7) is set in correspondence with the soil placement box (2), and the nozzle (7) adopts a universal ball nozzle.

7. The soil microplastic transport simulation test device according to claim 6, characterized in that: The nozzle frame (8) is fixedly connected to the slide rail (10) at both ends, and a ball screw is provided between the crossbar (5) and the nozzle frame (8).

8. The soil microplastic transport simulation test device according to claim 7, characterized in that: The ball screw includes a screw (12), a motor base (13), a fixed base (14), and a slider (15). A motor frame (16) for mounting the motor base (13) is fixedly arranged between the slide rails (10). The fixed base (14) is arranged on the nozzle frame (8), and the slider (15) is fixedly arranged on the crossbar (5).

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