A soil microplastic detection and sampling device

Abstract

The present invention relates to the technical field of sampling equipment, and discloses a soil microplastic detection sampling equipment, including a mobile base, the mobile base including a base body, a lifting frame fixedly installed on the top of the base body, a lifting plate slidably installed in the lifting frame, a transfer hole is opened in the middle of the top of the lifting plate, a sampling cylinder is fixedly installed in the transfer hole, and a sampling auger is arranged in the sampling cylinder. The present invention sets a sample storage mechanism, after the sample soil enters the material distribution box, the partition is lifted up by the push plate and the sample is sent into the storage cavity between the partitions, and the samples can be pushed into the corresponding storage cavity from far to near in sequence after multiple samplings, which improves the equipment. It can sample multiple samples in the entire sampling area at one time, and improves the sampling efficiency of the equipment. Then, the sampling cylinder and the sampling auger are cleaned and cooled by the flushing mechanism, which can improve the service life of the equipment, and at the same time reduce the friction between the drill bit and the soil, so that the sampling is faster.

Description

Technical Field

[0001] The present invention relates to the technical field of sampling equipment, and in particular to a soil microplastic detection sampling equipment. Background Art

[0002] Microplastics in the soil can affect plant growth, change soil structure, and may enter the food chain, causing ecological and health problems. Therefore, relevant departments need to take samples and conduct tests frequently to understand the extent of pollution, assess potential risks, and provide data support for the formulation of effective environmental protection measures.

[0003] A soil microplastic detection sampling device in the prior art (Announcement No.: CN220625799U) can be stably fixed at the sampling position through a positioning component, and the limit component can keep the drill tube rotating stably when the drill tube is working. However, sampling and detection often require multiple samples. The device can only take a sample once and then transfer it to the sample collection point. After the sample is placed, it can be sampled in the sampling area again, and the sampling efficiency is low. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a soil microplastic detection sampling device.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A soil microplastic detection sampling device comprises a mobile base, the mobile base comprises a base body, a lifting frame is fixedly installed on the top of the base body, a lifting plate is slidably installed in the lifting frame, a transfer hole is opened in the middle of the top of the lifting plate, a sampling barrel is fixedly installed in the transfer hole, a sampling auger drill is provided in the sampling barrel, the top of the sampling auger drill is rotatably installed with the bottom of the lifting plate, a plurality of soil crushing knives are evenly fixedly installed on the sampling auger drill near the top surface of the sampling barrel, a sample storage mechanism is provided on one side of the top of the lifting plate, the sample storage mechanism comprises a material distribution box, a plurality of slide slot holes are opened on the top of the material distribution box, a partition is slidably installed in each of the slide slot holes, a storage cavity is set between the plurality of partitions, the bottom of the material distribution box covers the transfer hole and is opened with a feed port connected thereto, a push plate is slidably installed in the material distribution box, and a flushing mechanism is provided on the top of the material distribution box.

[0007] As a further solution of the present invention, a plurality of blanking openings corresponding to the storage cavity are formed at the bottom of the material distribution box. A pull-out plate flush with the inner bottom of the material distribution box is slidably installed in each blanking opening. One end of each pull-out plate extends out of one side of the material distribution box, and a pull ring is installed at the end. A plurality of blanking grooves corresponding to the blanking openings are formed at the top of the lifting plate. Each blanking groove is in a funnel-shaped structure. A sampling bottle in a transparent structure is threadedly connected to the bottom end of each blanking groove. A waterproof sleeve is fixedly installed on the inner bottom of the material distribution box away from the partition board.

[0008] As a further solution of the present invention, an upper frame is fixedly installed at the top of the lifting frame. A plurality of damping spring rods are fixedly installed on one side of the bottom of the upper frame. The telescopic ends of the plurality of damping spring rods are respectively fixedly installed with the tops of the plurality of partition boards. Two top blocks are symmetrically and fixedly installed on two opposite sides of each partition board. Both ends of the pushing plate are in a triangular structure and are in contact with the inner wall of the material distribution box. Two electric telescopic rods are fixedly installed on the top of the lifting plate away from the material distribution box. The telescopic ends of the two electric telescopic rods pass through the material distribution box and are fixedly installed with one side of the pushing plate.

[0009] As a further solution of the present invention, a second motor is fixedly installed at the top of the upper frame. A lead screw is installed at the output end of the second motor. The bottom end of the lead screw passes through the outer surface of the lifting plate and is threadedly connected thereto. The bottom end of the lead screw is rotatably installed on the top of the base body. A U-shaped frame is fixedly installed on the top of the material distribution box. A first motor is fixedly installed on the top of the U-shaped frame. A transmission shaft is fixedly installed at the output end of the first motor. The bottom end of the transmission shaft sequentially passes through the material distribution box, the waterproof sleeve and the lifting plate and is fixedly installed with the rotation center of the top end of the sampling auger drill.

[0010] As a further solution of the present invention, a driving bevel gear is provided below the U-shaped frame. The driving bevel gear is rotatably installed on the top of the material distribution box. A one-way bearing is embedded in the driving bevel gear. The inner ring of the one-way bearing is nested on the surface of the connecting shaft. A driven bevel gear meshing with the driving bevel gear is rotatably installed on the top of the material distribution box.

[0011] As a further scheme of the present invention, the flushing mechanism includes a centrifugal pump casing, which is fixedly installed on the top of a dispensing box, and a worm wheel blade is rotatably installed in the centrifugal pump casing. The centrifugal pump casing is provided with a water inlet and a water outlet, and a three-way adapter is fixedly installed in the water inlet, and telescopic tubes are fixedly installed at the other two ends of the three-way adapter, and a branch pipe with a Y-shaped structure is fixedly installed in the water outlet, and the other two ends of the branch pipe are inserted into the dispensing box and fixedly installed therewith, water tanks are symmetrically fixedly installed on two opposite sides of the top of the base body, and a water suction pipe is fixedly installed in each of the water tanks, and the top of each of the water suction pipes is connected to the corresponding telescopic tube, and two arc blocks are symmetrically fixedly installed on the top of the dispensing box, and a groove for placing the telescopic tube is opened at the top of each arc block.

[0012] As a further solution of the present invention, the rotation center of the driven bevel gear close to the centrifugal pump casing is fixedly installed through a connecting shaft and the rotation center of the worm wheel blade, the distribution box is provided with an inspection port on the side away from the electric telescopic rod, an inspection door is hinged in the inspection port, and anti-falling bolts are provided on the surface of the inspection door, and a square nut is fixedly installed on the top of the distribution box close to the inspection door, and the anti-falling bolt is threadedly connected to the square nut.

[0013] As a further solution of the present invention, a plurality of self-locking universal wheels are fixedly installed around the bottom of the base body, a handle is fixedly installed on one side of the lifting frame, and an avoidance hole adapted to the sampling tube is opened at the bottom of the base body.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] By setting up a sample storage mechanism, the sample is pushed from the top of the sampling tube into the material distribution box, and then the push plate is pushed by the electric telescopic rod. The push plate lifts the partition and sends the sample into the storage cavity between the partitions. Multiple sampling can push the sample into the corresponding storage cavity from far to near in sequence, which improves the equipment to sample multiple samples in the entire sampling area at one time, and improves the sampling efficiency of the equipment;

[0016] By setting up a flushing mechanism, when the sample enters the corresponding storage chamber, the sampling auger drill is driven to rotate in the opposite direction, and the excess soil in the sampling tube is pushed out from the bottom of the sampling tube to fill the holes left by the sampling. At the same time, the sampling auger drill drives the worm blades in the centrifugal pump casing to rotate through the one-way bearing, thereby generating suction to pump the water in the two water tanks into the sampling tube to flush the sampling tube, which can cool the sampling auger drill and the sampling tube, thereby increasing the service life of the equipment. In addition, the friction between the drill bit and the soil after cleaning is reduced, so sampling can be carried out more quickly, further improving the sampling efficiency of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of a soil microplastic detection and sampling device proposed by the present invention;

[0018] Figure 2 This is a schematic diagram of the structure of a soil microplastic detection and sampling device proposed by the present invention from a bottom-up perspective;

[0019] Figure 3 This is a schematic diagram of the lifting frame structure of a soil microplastic detection and sampling device proposed by the present invention;

[0020] Figure 4 for Figure 3 A schematic diagram of the enlarged structure of part A;

[0021] Figure 5 This is a schematic cross-sectional view of a soil microplastic detection and sampling device proposed by the present invention;

[0022] Figure 6 for Figure 5 A schematic diagram of the enlarged structure of part B;

[0023] Figure 7 This is a schematic diagram of the disassembled structure of the sample storage mechanism of a soil microplastic detection and sampling device proposed by the present invention;

[0024] Figure 8 This is a schematic diagram of the structure of a material distribution box of a soil microplastic detection and sampling device proposed by the present invention;

[0025] Fig. 9 This is a schematic diagram of the sampling auger and soil breaking knife structure of a soil microplastic detection sampling device proposed in the present invention.

[0026] In the figure: 1. Mobile base; 101. Base body; 102. Self-locking universal wheel; 103. Avoidance hole; 2. Lifting frame; 3. Lifting plate; 301. Feeding chute; 302. Adapter hole; 4. Sample storage mechanism; 401. Material distribution box; 402. Sample storage bottle; 403. Inspection door; 404. Anti-drop bolt; 405. Partition; 406. Top block; 407. Square nut; 408. Slide hole; 409. Waterproof cover; 410. Feeding port; 411. Feeding port; 412. Pull-out plate; 5. Water tank; 6. Handle; 7. Upper frame; 8. Flushing mechanism; 801. Centrifugal pump casing; 802. Worm wheel blades; 803. Branch pipe; 804. Three-way adapter; 805. Telescopic pipe; 806. Arc block; 807. Suction pipe; 9. Screw; 10. Damping spring rod; 11. First motor; 12. Second motor; 13. Sampling cylinder; 14. Sampling auger; 15. Frame; 16. Driving bevel gear; 17. One-way bearing; 18. Driven bevel gear; 19. Electric telescopic rod; 20. Push plate; 21. Soil crusher. DETAILED DESCRIPTION

[0027] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0028] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply 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. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0029] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] Reference Figure 1-Figure 9A soil microplastic detection sampling device comprises a mobile base 1, the mobile base 1 comprises a base body 101, a lifting frame 2 is fixedly installed on the top of the base body 101, a lifting plate 3 is slidably installed in the lifting frame 2, a transfer hole 302 is opened in the middle of the top of the lifting plate 3, a sampling cylinder 13 is fixedly installed in the transfer hole 302, a sampling auger drill 14 is arranged in the sampling cylinder 13, a top of the sampling auger drill 14 is rotatably installed with the bottom of the lifting plate 3, a plurality of soil crushing knives 21 are evenly fixedly installed on the sampling auger drill 14 near the top surface of the sampling cylinder 13, a sample storage mechanism 4 is provided on one side of the top of the lifting plate 3, the sample storage mechanism 4 comprises a material distribution box 401, a plurality of chute holes 408 are opened on the top of the material distribution box 401, a partition 405 is slidably installed in each chute hole 408, a storage cavity is set between the plurality of partitions 405, the bottom of the material distribution box 401 covers the transfer hole 302 and is opened with a feeding port 410 connected thereto, a pusher is slidably installed in the material distribution box 401 The material plate 20 and the top of the material distribution box 401 are provided with a flushing mechanism 8. The present invention arranges a sample storage mechanism 4, and the sample enters from the bottom of the sampling tube 13, is transported upward by the sampling auger drill 14, and then is broken into the agglomerated sample soil by the soil crushing knife 21. After that, it is pushed into the material distribution box 401 from the top of the sampling tube 13, and the pushing plate 20 is pushed by the electric telescopic rod 19. The pushing plate 20 lifts the partition 405 and sends the sample into the storage cavity between the partitions 405. Multiple sampling can push the samples into the corresponding storage cavity from far to near in sequence, which improves the ability of the equipment to sample multiple samples in the entire sampling area at one time, thereby improving the sampling efficiency of the equipment. Then, the sampling tube 13 and the sampling auger drill 14 are cleaned by the flushing mechanism 8, and the sampling auger drill 14 and the sampling tube 13 can be cooled, thereby improving the service life of the equipment. In addition, the friction between the drill bit and the soil after cleaning is reduced, so sampling can be performed more quickly, further improving the sampling efficiency of the equipment.

[0031] In this embodiment, a plurality of blanking ports 411 corresponding to the storage cavity are formed at the bottom of the material distribution box 401. A draw plate 412 flush with the inner bottom of the material distribution box 401 is slidably installed in each blanking port 411. One end of each draw plate 412 extends out of one side of the material distribution box 401 and a pull ring is installed at the end. A plurality of blanking grooves 301 corresponding to the blanking ports 411 are formed at the top of the lifting plate 3. Each blanking groove 301 is of a funnel-shaped structure. A sample storage bottle 402 made of a transparent structure is threadedly connected to the bottom end of each blanking groove 301. A waterproof sleeve 409 is fixedly installed on the inner bottom of the material distribution box 401 on the side away from the partition plate 405. An upper frame 7 is fixedly installed at the top of the lifting frame 2. A plurality of damping spring rods 10 are fixedly installed on one side of the bottom of the upper frame 7. The telescopic ends of the plurality of damping spring rods 10 are fixedly installed with the tops of the plurality of partition plates 405 respectively. Two top blocks 406 are symmetrically and fixedly installed on two opposite sides of each partition plate 405. Both ends of the pushing plate 20 are of a triangular structure and are in contact with the inner wall of the material distribution box 401. Two electric telescopic rods 19 are fixedly installed on the top of the lifting plate 3 on the side away from the material distribution box 401. The telescopic ends of the two electric telescopic rods 19 both pass through the material distribution box 401 and are fixedly installed with one side of the pushing plate 20;

[0032] A second motor 12 is fixedly installed at the top of the upper frame 7. A lead screw 9 is installed at the output end of the second motor 12. The bottom end of the lead screw 9 passes through the outer surface of the lifting plate 3 and is threadedly connected thereto. The bottom end of the lead screw 9 is rotatably installed with the top of the base body 101. A U-shaped frame 15 is fixedly installed at the top of the material distribution box 401. A first motor 11 is fixedly installed at the top of the U-shaped frame 15. A transmission shaft is fixedly installed at the output end of the first motor 11. The bottom end of the transmission shaft sequentially passes through the material distribution box 401, the waterproof sleeve 409 and the lifting plate 3 and is fixedly installed with the rotation center of the top end of the sampling auger drill 14. A driving bevel gear 16 is provided below the U-shaped frame 15. The driving bevel gear 16 is rotatably installed at the top of the material distribution box 401. A one-way bearing 17 is embedded in the driving bevel gear 16. The inner ring of the one-way bearing 17 is nested on the surface of the connecting shaft. A driven bevel gear 18 meshing with the driving bevel gear 16 is rotatably installed at the top of the material distribution box 401.

[0033] When in use, the first motor 11 drives the transmission shaft to rotate clockwise, thereby driving the sampling auger 14 to rotate in an upward feeding state, and at the same time, the second motor 12 drives the screw rod 9 to rotate, and the screw rod 9 drives the lifting plate 3 to descend, driving the sampling tube 13 to enter the soil, and transporting the sample soil to the dividing box 401. After reaching the required sampling depth, the electric telescopic rod 19 is started to drive the push plate 20, and the sample soil is sent into the corresponding storage cavity through the push plate 20. During the movement of the push plate 20, the triangular structures at both ends cooperate with the top block 406 on the surface of the partition 405, which can lift the corresponding partition 405 and compress the corresponding The damping spring rod 10, when the soil sample is delivered to the position, the push plate 20 is reset, and the raised partition 405 slides downward under the reset force of the damping spring rod 10 to close both sides of the storage chamber. The edges of the two opposite side surfaces of the push plate 20 are fixedly installed with rubber scrapers to prevent the bottom of the push plate 20 from contacting the inner wall of the material dividing box 401 with a gap, thereby preventing residue from being left in the process of pushing the soil sample. After pushing the soil sample once, the push plate 20 is not completely reset but stops at the side of the feed port 410 close to the partition 405, separating the feed port 410 from the storage area, so as to facilitate the flushing mechanism 8 to flush the sampling cylinder 13, and prevent the cleaning water from seeping into the storage chamber;

[0034] By setting up multiple sample storage bottles 402, when it is necessary to extract samples, the discharge port 411 at the bottom of the distribution box 401 can be connected with the discharge trough 301 and the sample storage bottle 402 by pulling the pull-out plate 412 at the corresponding position. The sample storage bottle 402 is made of transparent non-plastic material and has capacity scale lines engraved on the surface. When extracting samples, an appropriate amount of sample can be extracted as needed, and then the pull-out plate 412 can be pushed to close the discharge port 411, so that the sample can be extracted multiple times. The unused samples can also be sealed and stored for easy use, thereby improving the convenience of equipment use.

[0035] In this embodiment, the flushing mechanism 8 includes a centrifugal pump casing 801, which is fixedly installed on the top of the dispensing box 401. A worm wheel blade 802 is rotatably installed in the centrifugal pump casing 801. The centrifugal pump casing 801 is provided with a water inlet and a water outlet. A three-way adapter 804 is fixedly installed in the water inlet, and telescopic tubes 805 are fixedly installed at the other two ends of the three-way adapter 804. A branch pipe 803 with a Y-shaped structure is fixedly installed in the water outlet, and the other two ends of the branch pipe 803 are inserted into the dispensing box 401 and fixedly installed therewith. Water tanks 5 are symmetrically fixedly installed on two opposite sides of the top of the base body 101, and a water extraction pipe 807 is fixedly installed in each water tank 5. The top of each water extraction pipe 807 is connected to the corresponding telescopic tube 805. Two Arc blocks 806, each arc block 806 has a groove on the top for placing the telescopic tube 805, the driven bevel gear 18 is fixedly installed at the rotation center of the centrifugal pump housing 801 side through the connecting shaft and the rotation center of the worm wheel blade 802, the dispensing box 401 is provided with an inspection port on the side away from the electric telescopic rod 19, and an inspection door 403 is hinged in the inspection port, and an anti-falling bolt 404 is provided on the surface of the inspection door 403, and a square nut 407 is fixedly installed on the top of the dispensing box 401 near the inspection door 403, and the anti-falling bolt 404 is threadedly connected to the square nut 407, a plurality of self-locking universal wheels 102 are fixedly installed around the bottom of the base body 101, a handle 6 is fixedly installed on one side of the lifting frame 2, and an avoidance hole 103 compatible with the sampling tube 13 is provided at the bottom of the base body 101.

[0036] When in use, during the cleaning process, the first motor 11 drives the transmission shaft to rotate counterclockwise, thereby driving the sampling auger 14 to rotate in a downward feeding state, thereby pushing the excess sample soil in the sampling tube 13 into the pit below the equipment, and at the same time, the transmission shaft can drive the active bevel gear 16 to rotate through the one-way bearing 17, and the active bevel gear 16 drives the driven bevel gear 18 to rotate, and the driven bevel gear 18 drives the worm wheel blade 802 to rotate through the connecting shaft, thereby generating suction in the centrifugal pump housing 801, and the water in the water tank 5 is pumped to the distribution box 401 near the inlet through the telescopic tube 805 and the water suction pipe 807. On one side of the material inlet 410, the liquid flows into the sampling cylinder 13 through the material inlet 410 to clean the sampling cylinder 13 and the sampling auger drill 14, which can cool the sampling auger drill 14 and the sampling cylinder 13, thereby increasing the service life of the equipment. In addition, the friction between the drill bit and the soil after cleaning is reduced, so sampling can be performed more quickly, further improving the sampling efficiency of the equipment. By providing a mobile base 1 and a handle 6, the equipment can be moved in the sampling area as needed, and then the equipment can be locked by the self-locking universal wheel 102, thereby increasing the range of sampling distribution and the flexibility of sampling operation.

[0037] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A soil microplastic detection and sampling device, comprising a mobile base (1), characterized in that: The mobile base (1) comprises a base body (101), a lifting frame (2) is fixedly mounted on the top of the base body (101), a lifting plate (3) is slidably mounted in the lifting frame (2), a transfer hole (302) is provided in the middle of the top of the lifting plate (3), a sampling tube (13) is fixedly mounted in the transfer hole (302), a sampling auger (14) is provided in the sampling tube (13), the top of the sampling auger (14) is rotatably mounted on the bottom of the lifting plate (3), and a plurality of soil crushing knives are evenly fixedly mounted on the surface of the top of the sampling tube (13) near the top of the sampling tube (13) (21), a sample storage mechanism (4) is provided on one side of the top of the lifting plate (3), and the sample storage mechanism (4) includes a material distribution box (401), a plurality of slide slot holes (408) are provided on the top of the material distribution box (401), a partition plate (405) is slidably installed in each of the slide slot holes (408), a storage cavity is provided between the plurality of partition plates (405), the bottom of the material distribution box (401) covers the transfer hole (302) and is provided with a feed port (410) connected thereto, a push plate (20) is slidably installed in the material distribution box (401), and a flushing mechanism (8) is provided on the top of the material distribution box (401).

2. A soil microplastic detection sampling device according to claim 1, characterized in that: The bottom of the material distribution box (401) is provided with a plurality of discharge ports (411) corresponding to the storage cavity, and a pull-out plate (412) flush with the bottom of the material distribution box (401) is slidably installed in each of the discharge ports (411), and one end of each of the pull-out plates (412) extends out of one side of the material distribution box (401) and a pull ring is installed at the end. The top of the lifting plate (3) is provided with a plurality of discharge troughs (301) corresponding to the discharge ports (411), and each of the discharge troughs (301) is in a funnel-shaped structure. The bottom end of each of the discharge troughs (301) is threadedly connected to a sample storage bottle (402) in a transparent structure, and a waterproof cover (409) is fixedly installed on the side of the bottom of the material distribution box (401) away from the partition (405).

3. A soil microplastic detection sampling device according to claim 1, characterized in that: An upper frame (7) is fixedly mounted on the top of the lifting frame (2), and a plurality of damping spring rods (10) are fixedly mounted on one side of the bottom of the upper frame (7). The telescopic ends of the plurality of damping spring rods (10) are respectively fixedly mounted on the tops of a plurality of partitions (405), and two top blocks (406) are symmetrically fixedly mounted on two opposite sides of each of the partitions (405). Both ends of the push plate (20) are triangular in structure and are abutted against the inner wall of the material distribution box (401). Two electric telescopic rods (19) are fixedly mounted on the top of the lifting plate (3) away from the material distribution box (401), and the telescopic ends of the two electric telescopic rods (19) pass through the material distribution box (401) and are fixedly mounted on one side of the push plate (20).

4. A soil microplastic detection sampling device according to claim 3, characterized in that: A second motor (12) is fixedly mounted on the top of the upper frame (7), a screw rod (9) is mounted on the output end of the second motor (12), the bottom end of the screw rod (9) passes through the outer surface of the lifting plate (3) and is threadedly connected thereto, the bottom end of the screw rod (9) is rotatably mounted on the top of the base body (101), a shaped frame (15) is fixedly mounted on the top of the material distribution box (401), a first motor (11) is fixedly mounted on the top of the shaped frame (15), a transmission shaft is fixedly mounted on the output end of the first motor (11), the bottom end of the transmission shaft passes through the material distribution box (401), the waterproof cover (409) and the lifting plate (3) in sequence and is fixedly mounted on the top rotation center of the sampling auger (14).

5. A soil microplastic detection sampling device according to claim 4, characterized in that: A driving bevel gear (16) is provided below the molded frame (15), and the driving bevel gear (16) is rotatably mounted on the top of the material distribution box (401). A one-way bearing (17) is embedded inside the driving bevel gear (16), and the inner ring of the one-way bearing (17) is embedded in the surface of the connecting shaft. A driven bevel gear (18) meshing with the driving bevel gear (16) is rotatably mounted on the top of the material distribution box (401).

6. A soil microplastic detection sampling device according to claim 1, characterized in that: The flushing mechanism (8) comprises a centrifugal pump housing (801), the centrifugal pump housing (801) being fixedly mounted on the top of the material distribution box (401), a worm wheel blade (802) being rotatably mounted in the centrifugal pump housing (801), the centrifugal pump housing (801) being provided with a water inlet hole and a water outlet hole, a three-way adapter (804) being fixedly mounted in the water inlet hole, telescopic tubes (805) being fixedly mounted at the other two ends of the three-way adapter (804), a branch pipe (803) having a Y-shaped structure being fixedly mounted in the water outlet hole, the branch pipe (803) The other two ends are inserted into the material distribution box (401) and fixedly installed therewith. Water tanks (5) are symmetrically fixedly installed on two opposite sides of the top of the base body (101). A water pumping pipe (807) is fixedly installed in each of the water tanks (5). The top of each of the water pumping pipes (807) is connected to the corresponding telescopic pipe (805). Two arc blocks (806) are symmetrically fixedly installed on the top of the material distribution box (401). A groove for placing the telescopic pipe (805) is opened on the top of each of the arc blocks (806).

7. A soil microplastic detection sampling device according to claim 5, characterized in that: The rotation center of the driven bevel gear (18) on the side close to the centrifugal pump housing (801) is fixedly installed with the rotation center of the worm wheel blade (802) via a connecting shaft; an inspection opening is provided on the side of the material distribution box (401) away from the electric telescopic rod (19); an inspection door (403) is hingedly connected in the inspection opening; an anti-drop bolt (404) is provided on the surface of the inspection door (403); a square nut (407) is fixedly installed on the top of the material distribution box (401) on the side close to the inspection door (403); the anti-drop bolt (404) is threadedly connected to the square nut (407).

8. A soil microplastic detection sampling device according to claim 1, characterized in that: A plurality of self-locking universal wheels (102) are fixedly mounted around the bottom of the base body (101), a handle (6) is fixedly mounted on one side of the lifting frame (2), and a avoidance hole (103) adapted to the sampling tube (13) is provided at the bottom of the base body (101).

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