A prevent mixing stratified sampling soil collecting device

Abstract

The utility model relates to a kind of anti-mixed layered sampling soil collection equipment, it is related to soil collection technical field, effectively solve the technical problem that sampling soil is easy to mix, including support, fixed groove is set up on the support, two fixed plates are set in the fixed groove, two the movable barrel is set between the fixed plate, the motor is fixedly connected with one side of the barrel, the output of the motor is fixedly connected with the pivot, the other end of the pivot passes through barrel and is fixedly connected with one-way wheel, the other end of the pivot is fixedly connected with auger bit by one-way wheel.The utility model is inserted into ground, and the soil of different depth is collected, and the insertion depth is adjusted by being inserted into ground, so that the staff can use conveniently, and the barrel can be inserted into ground to carry out soil sampling operation by being guided to the barrel inserted into ground.

Description

Technical Field

[0001] This utility model relates to the field of soil sampling technology, specifically a soil sampling device for preventing mixing and stratification. Background Technology

[0002] Soil stratification sampling involves collecting independent samples at different depths without disturbing the upper soil layer. This is used to investigate the migration depth of heavy metals and organic pollutants in the soil, or to study soil classification and genesis, or to understand the moisture and nutrient conditions of different soil layers.

[0003] Currently, conventional methods for soil stratification and collection mainly rely on manual sampling tools to excavate profiles and collect soil, or on drilling rigs equipped with augers to drill holes in the ground and collect the soil brought out.

[0004] For existing drilling rigs equipped with auger drill bits, after sampling is completed, the drill bit and sampling tube need to be removed by reverse drive. Then, the sampled soil is knocked out from the sampling tube inside the drill bit. During the reverse return process after sampling, the auger drill bit still performs sampling action on the borehole wall, which will cause soil from different layers to enter and mix. In addition, the position of the sampled soil inside will change. This makes the final stratified sampling results inaccurate, resulting in distorted sample test data collected by the staff, which cannot truly reflect the soil conditions at that depth.

[0005] Based on this, the present invention provides a soil sampling device for preventing mixing and stratification to solve the above problems. Utility Model Content

[0006] In view of the above situation and to overcome the defects of the prior art, this utility model provides a soil sampling device for preventing mixing and stratification. This utility model has a novel structure and ingenious design, and effectively solves the technical problem of easy mixing of sampled soil.

[0007] A soil sampling device for preventing mixing and stratification includes a support frame with a fixing groove. Two fixing plates are installed in the fixing groove, and a movable material cylinder is placed between the two fixing plates. A motor is fixedly connected to one side of the material cylinder, and a rotating shaft is fixedly connected to the output end of the motor. The other end of the rotating shaft passes through the material cylinder and is fixedly connected to a one-way wheel. A spiral drill bit is fixedly connected to the other end of the rotating shaft through the one-way wheel. The spiral drill bit cooperates with the inner wall of the material cylinder, and the other end of the spiral drill bit extends out from the other end of the material cylinder.

[0008] Preferably, guide rails are fixedly connected to the opposite sides of the two fixed plates, and a fixed ring is fixedly connected to the material cylinder. The fixed ring has two limiting grooves, and the fixed ring is slidably connected to the two guide rails through the two limiting grooves.

[0009] Preferably, a guide plate is fixedly connected to one side of each of the two fixed plates. The guide plate has an internal thread on the side near the material cylinder. A support plate is fixedly connected to one side of the material cylinder. A support shaft is rotatably connected to the support plate. A screw is fixedly connected to one end of the support shaft. The screw is threadedly connected to the internal thread on one side of the guide plate.

[0010] Preferably, a drive wheel is fixedly connected to the rotating shaft, the drive wheel is located between the motor and the material cylinder, a driven wheel is fixedly connected to the support shaft, and belts are sleeved on the drive wheel and the driven wheel.

[0011] Preferably, the bottom of the material cylinder is provided with a main discharge port and multiple branch discharge ports, each of the multiple branch discharge ports is provided with an installation groove, the bottom of the multiple installation grooves is fixedly connected with two fixing rods, each of the two fixing rods is fixedly connected with a sealing gasket, and a cover plate is provided inside the multiple branch discharge ports.

[0012] Preferably, the cover plate is fitted with the mounting groove, a sealing plate is fixedly connected to one side of the cover plate, the sealing plate is fitted with the discharge port, two insertion grooves are provided on the cover plate, the mounting groove is fixed to the cover plate by two fixing rods, and the two fixing rods are respectively fitted with the two insertion grooves by sealing gaskets, and anti-slip texture is provided on one side of the cover plate.

[0013] Preferably, two bases are fixedly connected to both sides of the bottom of the bracket, and two supports are fixedly connected to both sides of the bracket. The four supports are located above the four bases respectively. Each of the four supports has an upper mounting hole, and each of the four bases has a lower mounting hole.

[0014] Preferably, the four upper mounting holes are located above the four lower mounting holes, and one upper mounting hole and one lower mounting hole form a group, with a grounding rod slidably connected in the upper mounting hole and the lower mounting hole.

[0015] Preferably, a baffle is fixedly connected to the grounding rod, the baffle is located between the support and the base, and a spring is sleeved on the grounding rod, the spring being located between the baffle and the support.

[0016] Preferably, each of the four bases has two sliding grooves on one side, and each of the four sliding grooves has a partition slidably connected therein. Each of the four partitions is engaged with one of the four lower mounting holes and with one of the four grounding rods.

[0017] The present invention has the following technical effects.

[0018] 1. This utility model uses a material cylinder, a motor, and a spiral drill bit to collect soil at different depths by inserting them into the ground. The insertion depth can be adjusted by a drive wheel, a driven wheel, a screw, and an internal thread, making it convenient for workers to use. The material cylinder is guided by a guide rail, a fixing ring, and a limiting groove, allowing it to be inserted into the ground at an angle for soil sampling.

[0019] This invention uses a one-way wheel to prevent the auger from rotating when the material cylinder moves in the opposite direction. Instead, it drives the material cylinder back to its original position, preventing further sampling of the borehole wall and preventing new soil from entering the material cylinder and causing mixing.

[0020] 2. This utility model, through its separate discharge port, fixing rod, cover plate, and sealing plate, facilitates the extraction of complete soil samples by workers, allowing for the acquisition of representative samples by depth layering, and effectively preventing cross-contamination between different soil layers. The main discharge port also facilitates the release of the remaining soil after sampling.

[0021] 3. This utility model uses a support, a ground-inserting rod, a baffle, and a spring to facilitate insertion into the ground during use, thereby providing auxiliary fixation for the support and facilitating subsequent drilling and soil extraction operations. Attached Figure Description

[0022] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0023] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0024] Figure 2 This is a schematic diagram of the assembly structure of the bracket, fixing groove and guide plate in this utility model;

[0025] Figure 3 This is a schematic diagram of the assembly structure of the bracket, guide plate and limiting frame in this utility model;

[0026] Figure 4 This is a schematic diagram of the assembly structure of the material cylinder, rotating shaft, one-way wheel and spiral drill bit in this utility model;

[0027] Figure 5 This is a schematic diagram of the assembly structure of the material cylinder, main discharge port and sub-discharge port in this utility model;

[0028] Figure 6 This is a utility model Figure 5 Enlarged structural diagram of section A in the middle;

[0029] Figure 7This is a schematic diagram of the assembly structure of the cover plate, insertion groove and sealing plate in this utility model.

[0030] Reference numerals: 1-Bracket; 2-Fixing groove; 3-Fixing plate; 4-Guide rail; 5-Barrel; 6-Fixing ring; 7-Limiting groove; 8-Motor; 9-Shaft; 10-One-way wheel; 11-Auger bit; 12-Main outlet; 13-Secondary outlet; 14-Mounting groove; 15-Fixing rod; 16-Sealing gasket; 17-Cover plate; 18-Insertion groove; 19-Sealing plate; 20-Anti-slip texture; 21-Driving wheel; 22-Support plate; 23-Spindle; 24-Driven wheel; 25-Belt; 26-Screw; 27-Guide plate; 28-Internal thread; 29-Support; 30-Upper mounting hole; 31-Base; 32-Lower mounting hole; 33-Slide groove; 34-Pin rod; 35-Baffle; 36-Spring; 37-Partition; 38-Moving shaft; 39-Limiting frame. Detailed Implementation

[0031] The foregoing and other technical contents, features and effects of this utility model are described in conjunction with the appendix below. Figures 1 to 7 The detailed description of the embodiments will make this clear. All references to the following embodiments are made with reference to the accompanying drawings.

[0032] Exemplary embodiments of the present invention will now be described with reference to the accompanying drawings.

[0033] As an example, such as Figures 2-5 As shown, this utility model includes a bracket 1, on which a fixing groove 2 is provided. Two fixing plates 3 are arranged in the fixing groove 2. Movable shafts 38 are fixedly connected to the opposite sides of the two fixing plates 3. The two fixing plates 3 are rotatably connected to one side of the bracket 1 through the movable shafts 38. A movable material cylinder 5 is arranged between the two fixing plates 3. A motor 8 is fixedly connected to one side of the material cylinder 5. The motor 8 is connected to a power supply and a controller. A rotating shaft 9 is fixedly connected to the output end of the motor 8. The other end of the rotating shaft 9 passes through the material cylinder 5 and is fixedly connected to a one-way wheel 10. A spiral drill bit 11 is fixedly connected to the other end of the rotating shaft 9 through the one-way wheel 10. The spiral drill bit 11 cooperates with the inner wall of the material cylinder 5. The other end of the spiral drill bit 11 extends out from the other end of the material cylinder 5. A limit frame 39 is fixedly connected to one side of the bracket 1. The limit frame 39 cooperates with a guide plate 27 to limit the guide plate 27.

[0034] In this embodiment, during use, the operator pushes the two fixed plates 3 upwards, causing them to rotate around the movable shaft 38 within the fixed groove 2 until they detach from the fixed groove 2 and stand vertically to one side of the support 1. This allows the auger drill bit 11 to drill a hole straight downwards for soil sampling. The motor 8 drives the rotating shaft 9 to rotate, which in turn drives the material cylinder 5 to slide between the two fixed plates 3, bringing the material cylinder 5 closer to the soil sampling point. One end of the auger drill bit 11 first contacts the ground and rotates within the material cylinder 5 under the influence of the rotating shaft 9, thus drilling a hole in the ground. During this process, the auger drill bit 11 continuously delivers the soil generated during drilling into the material cylinder 5. As the material cylinder 5 continues to descend, its front end gradually embeds into the material cylinder 11. The drilling depth increases as the soil is collected layer by layer into the material cylinder 5, eventually completing the collection of soil at different depths. After the soil collection is complete, the motor 8 reverses, causing the material cylinder 5 to move in the opposite direction along the fixed plate 3. At this time, due to the limiting of the one-way wheel 10, the rotating shaft 9 cannot drive the auger drill bit 11 to rotate, thus effectively limiting the soil collected in the material cylinder 5. After the soil is sampled, the staff pushes the two fixed plates 3 in the opposite direction, causing the guide plate 27 on one side of the two fixed plates 3 to disengage from the limiting frame 39, so that the two fixed plates 3 tilt into the fixed groove 2 until they contact the inner wall of the fixed groove 2. The fixed groove 2 limits the two fixed plates 3, making it convenient to remove the soil from the material cylinder 5 later.

[0035] As an example, such as Figure 2 , Figure 3 and Figure 5 As shown, guide rails 4 are fixedly connected to the opposite sides of the two fixed plates 3, and a fixed ring 6 is fixedly connected to the material cylinder 5. Two limiting grooves 7 are opened on the fixed ring 6. Both limiting grooves 7 are rectangular and fit with the guide rails 4. The fixed ring 6 is slidably connected to the two guide rails 4 through the two limiting grooves 7.

[0036] As an example, such as Figure 2 and Figure 4 As shown, a guide plate 27 is fixedly connected to one side of the two fixed plates 3. The guide plate 27 has an internal thread 28 on the side near the material cylinder 5. A support plate 22 is fixedly connected to one side of the material cylinder 5. A support shaft 23 is rotatably connected to the support plate 22. A screw 26 is fixedly connected to one end of the support shaft 23. The screw 26 is threadedly connected to the internal thread 28 on one side of the guide plate 27.

[0037] As an example, such as Figure 4 As shown, a drive wheel 21 is fixedly connected to the rotating shaft 9. The drive wheel 21 is located between the motor 8 and the material cylinder 5. A driven wheel 24 is fixedly connected to the support shaft 23. A belt 25 is sleeved on the drive wheel 21 and the driven wheel 24.

[0038] In this embodiment, when the motor 8 drives the rotating shaft 9 to rotate, the driving wheel 21 fixed on the rotating shaft 9 rotates accordingly, and drives the driven wheel 24 to rotate through the belt 25. The driven wheel 24 then drives the support shaft 23 to rotate inside the support plate 22. When the support shaft 23 rotates, it drives the screw 26 connected to it to rotate. The external thread on the screw 26 meshes with the internal thread 28 on one side of the guide plate 27, thereby converting the rotational motion into linear motion, pushing the support plate 22 to move along the guide plate 27. The support plate 22 then drives the material cylinder 5 to advance towards the drilling position on the ground.

[0039] During the movement of the material cylinder 5, the fixing ring 6 installed on it slides with the two guide rails 4 through the two limiting grooves 7, providing precise guidance for the moving material cylinder 5 and ensuring its stable movement trajectory. After the soil is collected, the motor 8 reverses and drives the support shaft 23 to rotate in the opposite direction on the support plate 22, which in turn drives the screw 26 to rotate in the opposite direction. Through the engagement of the internal thread 28, the support plate 22 drives the material cylinder 5 to move in the opposite direction along the fixing plate 3, thereby sending out the soil collected in the material cylinder 5 and completing the sampling operation.

[0040] As an example, such as Figure 5 and Figure 6 As shown, the bottom of the material cylinder 5 is provided with a main discharge port 12 and multiple branch discharge ports 13. The multiple branch discharge ports 13 are evenly distributed at the bottom of the material cylinder 5. Each of the multiple branch discharge ports 13 is provided with an installation groove 14. The bottom of the multiple installation grooves 14 is fixedly connected to two fixing rods 15. Each of the two fixing rods 15 is fixedly connected with a sealing gasket 16. The sealing gasket 16 is annular. A cover plate 17 is provided inside the multiple branch discharge ports 13.

[0041] As an example, such as Figures 4-7 As shown, the cover plate 17 is fitted with the mounting groove 14. A sealing plate 19 is fixedly connected to one side of the cover plate 17. The sealing plate 19 is fitted with the discharge port 13. Two insertion grooves 18 are provided on the cover plate 17. The mounting groove 14 is fixed to the cover plate 17 by two fixing rods 15. Both fixing rods 15 are fitted with the two insertion grooves 18 by sealing gaskets 16 respectively. Anti-slip texture 20 is provided on one side of the cover plate 17.

[0042] In this embodiment, after the soil is removed through the material cylinder 5, the worker can remove the cover plate 17 from the installation groove 14 and then remove the soil from the material cylinder 5 through the discharge port 13. This effectively ensures the accuracy of soil sampling at different depths and avoids the mixing of soil layers. After sampling, the cover plate 17 is aligned with the installation groove 14 so that the sealing plate 19 on it is embedded in the discharge port 13, thereby effectively sealing the discharge port 13. At this time, the two fixing rods 15 in the installation groove 14 will be inserted into the two corresponding insertion slots 18 on the cover plate 17. As the sealing gasket 16 on the fixing rod 15 is pressed into the groove, the cover plate 17 is firmly fixed in the installation groove 14, thereby ensuring that the soil will not leak from the discharge port 13.

[0043] As an example, such as Figures 1-3 As shown, two bases 31 are fixedly connected to both sides of the bottom of the bracket 1, and two supports 29 are fixedly connected to both sides of the bracket 1. The four supports 29 are located above the four bases 31 respectively. Each of the four supports 29 has an upper mounting hole 30, and each of the two bases 31 has a lower mounting hole 32. The upper mounting hole 30 and the lower mounting hole 32 have the same shape.

[0044] As an example, such as Figures 1-3 As shown, the four upper mounting holes 30 are located above the four lower mounting holes 32 respectively. One upper mounting hole 30 and one lower mounting hole 32 form a group, and a grounding rod 34 is slidably connected in the upper mounting hole 30 and the lower mounting hole 32.

[0045] As an example, such as Figure 1 and Figure 3 As shown, a baffle 35 is fixedly connected to the grounding rod 34. The baffle 35 is circular and is located between the support 29 and the base 31. A spring 36 is sleeved on the grounding rod 34 and is located between the baffle 35 and the support 29.

[0046] As an example, such as Figure 1 and Figure 3 As shown, each of the two bases 31 has two sliding grooves 33 on one side, and each of the four sliding grooves 33 has a partition 37 slidably connected in it. The sliding grooves 33 are rectangular and fit against the partitions 37. The four partitions 37 are respectively matched with the four lower mounting holes 32 and the four partitions 37 are respectively matched with the four grounding rods 34.

[0047] In this embodiment, when collecting soil, the support 1 is first placed on the ground. Then, the partition 37 is pulled out from the slide 33, exposing the lower mounting hole 32 on the base 31. At this time, the staff can push the ground-inserting rod 34 to slide it down between the upper mounting hole 30 and the lower mounting hole 32 until it is inserted into the ground, thereby completing the fixation of the support 1 and ensuring the stability of the subsequent soil collection process.

[0048] After soil collection is completed, pull the insertion rod 34 upwards so that it slides in opposite directions within the upper mounting hole 30 and the lower mounting hole 32. The insertion rod 34 will compress the spring 36. When the bottom of the insertion rod 34 is raised above the lower mounting hole 32, it pushes the partition 37 in the opposite direction, so that it is reset and slides into the groove 33, thus shielding the insertion rod 34 for direct use in the next collection.

[0049] Working principle of this utility model:

[0050] When in use, first place the bracket 1 at the location where soil needs to be collected, pull the partition 37 out of the chute 33, push the ground rod 34 to pass through the lower mounting hole 32 and insert it into the ground, thereby fixing the bracket 1. The spring 36 generates a continuous squeezing force on the baffle 35, which is convenient for the next use. After use, pull the ground rod 34 upward so that its bottom end moves above the lower mounting hole 32, and then push the partition 37 in the opposite direction to slide into the chute 33, which can block the ground rod 34.

[0051] By pushing the two fixed plates 3 out of the fixed groove 2 and standing on one side of the bracket 1, the guide plate 27 on one side of the two fixed plates 3 enters the limiting frame 39 for limiting and is locked by the limiting block. The movable shaft 38 and the limiting frame 39 can make the material cylinder 5 stable at the limiting frame 39 after rotation, so that the material cylinder 5 can work stably. The motor 8 works and drives the rotating shaft 9 to rotate, which in turn drives the spiral drill bit 11 to rotate. After the spiral drill bit 11 contacts the ground, it drills a hole and transports the generated soil upward into the material cylinder 5. While the motor 8 drives the spiral drill bit 11 to rotate, the screw 26 on one side rotates and meshes with the internal thread 28 on the guide plate 27, pushing the material cylinder 5 to continuously feed towards the drilling position and gradually increase the drilling depth.

[0052] After soil collection is completed, the staff pushes the two fixing plates 3 in the opposite direction, so that the two fixing plates 3 enter the fixing groove 2 and contact the bottom of the fixing groove 2, so that the material cylinder 5 is tilted in the fixing groove 2, which facilitates the removal of the collected soil. The motor 8 reverses, driving the material cylinder 5 to move in the opposite direction along the two fixing plates 3, thereby removing the collected soil. During the reverse rotation of the motor 8, the auger drill bit 11 will not reverse due to the limiting effect of the one-way wheel 10, ensuring that the collected soil is stably stored in the material cylinder 5.

[0053] After removing the soil-filled cylinder 5, the staff can take out the cover plate 17 from the installation groove 14 and then sample the soil at different depths. After sampling, the cover plate 17 is placed back on the installation groove 14, so that the fixing rod 15 in the installation groove 14 is inserted into the corresponding insertion groove 18 of the cover plate 17, and the sealing gasket 16 on the fixing rod 15 achieves tight positioning.

[0054] After soil sampling at the designated depth is completed, motor 8 is restarted, driving the auger drill bit 11 to rotate inside the material cylinder 5, and transporting the remaining soil to the main discharge port 12 for complete discharge.

[0055] The present invention has the following technical effects.

[0056] 1. This utility model uses a material cylinder 5, a motor 8, and a spiral drill bit 11 to collect soil at different depths by inserting them into the ground. The insertion depth can be adjusted by using a drive wheel 21, a driven wheel 24, a screw 26, and an internal thread 28 to facilitate use by workers. The material cylinder 5 is guided by a guide rail 4, a fixing ring 6, and a limiting groove 7, so that the material cylinder 5 can be inserted into the ground at an angle for soil sampling.

[0057] This invention enables the unidirectional wheel 10 to prevent the auger drill bit 11 from rotating when the material cylinder 5 moves in the opposite direction. It only drives the material cylinder 5 to return to its original position in the opposite direction, so that there will be no sampling action on the hole wall again and no new soil will enter the material cylinder and cause mixing.

[0058] 2. This utility model, through the discharge port 13, fixing rod 15, cover plate 17 and sealing plate 19, facilitates the extraction of complete soil by staff, and allows for the acquisition of representative samples by depth layering, effectively preventing cross-contamination between different soil layers. The main discharge port 12 facilitates the release of the remaining soil after soil sampling.

[0059] 3. This utility model uses a support 29, a ground-inserting rod 34, a baffle 35, and a spring 36 to facilitate insertion into the ground during use, thereby providing auxiliary fixation for the bracket 1 and facilitating subsequent drilling and soil extraction operations.

[0060] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A soil sampling device for preventing mixing and stratification, comprising a support (1), characterized in that, The bracket (1) has a fixed groove (2) and two fixed plates (3) are provided in the fixed groove (2). A movable material cylinder (5) is provided between the two fixed plates (3). A motor (8) is fixedly connected to one side of the material cylinder (5). A rotating shaft (9) is fixedly connected to the output end of the motor (8). The other end of the rotating shaft (9) passes through the material cylinder (5) and is fixedly connected to a one-way wheel (10). The other end of the rotating shaft (9) is fixedly connected to a spiral drill bit (11) through the one-way wheel (10). The spiral drill bit (11) cooperates with the inner wall of the material cylinder (5). The other end of the spiral drill bit (11) extends out from the other end of the material cylinder (5).

2. The soil sampling device for preventing mixing and stratification as described in claim 1, characterized in that, Guide rails (4) are fixedly connected to the opposite sides of the two fixed plates (3), and a fixed ring (6) is fixedly connected to the cylinder (5). Two limiting grooves (7) are opened on the fixed ring (6), and the fixed ring (6) is slidably connected to the two guide rails (4) through the two limiting grooves (7).

3. The soil sampling device for preventing mixing and stratification as described in claim 1, characterized in that, A guide plate (27) is fixedly connected to one side of the two fixed plates (3). The guide plate (27) has an internal thread (28) on the side near the material cylinder (5). A support plate (22) is fixedly connected to one side of the material cylinder (5). A support shaft (23) is rotatably connected to the support plate (22). A screw (26) is fixedly connected to one end of the support shaft (23). The screw (26) is threadedly connected to the internal thread (28) on one side of the guide plate (27).

4. The soil sampling device for preventing mixing and stratification as described in claim 3, characterized in that, A drive wheel (21) is fixedly connected to the rotating shaft (9). The drive wheel (21) is located between the motor (8) and the material cylinder (5). A driven wheel (24) is fixedly connected to the support shaft (23). A belt (25) is sleeved on the drive wheel (21) and the driven wheel (24).

5. The soil sampling device for preventing mixing and stratification as described in claim 1, characterized in that, The bottom of the material cylinder (5) is provided with a main discharge port (12) and multiple branch discharge ports (13). Each of the multiple branch discharge ports (13) is provided with an installation groove (14). Two fixing rods (15) are fixedly connected to the bottom of the multiple installation grooves (14). Each of the two fixing rods (15) is fixedly connected with a sealing gasket (16). A cover plate (17) is provided inside the multiple branch discharge ports (13).

6. The soil sampling device for preventing mixing and stratification as described in claim 5, characterized in that, The cover plate (17) is fitted with the mounting groove (14). A sealing plate (19) is fixedly connected to one side of the cover plate (17). The sealing plate (19) is fitted with the discharge port (13). Two insertion grooves (18) are provided on the cover plate (17). The mounting groove (14) is fixed to the cover plate (17) by two fixing rods (15). The two fixing rods (15) are fitted with the two insertion grooves (18) respectively by sealing gaskets (16). Anti-slip texture (20) is provided on one side of the cover plate (17).

7. The soil sampling device for preventing mixing and stratification as described in claim 1, characterized in that, The bracket (1) has two bases (31) fixedly connected to both sides of its bottom, and two supports (29) fixedly connected to both sides of the bracket (1). The four supports (29) are located above the four bases (31), and each of the four supports (29) has an upper mounting hole (30) and each of the four bases (31) has a lower mounting hole (32).

8. The soil sampling device for preventing mixing and stratification as described in claim 7, characterized in that, The four upper mounting holes (30) are located above the four lower mounting holes (32), and one upper mounting hole (30) and one lower mounting hole (32) form a group. A grounding rod (34) is slidably connected in the upper mounting hole (30) and the lower mounting hole (32).

9. The soil sampling device for preventing mixing and stratification as described in claim 8, characterized in that, A baffle (35) is fixedly connected to the grounding rod (34). The baffle (35) is located between the support (29) and the base (31). A spring (36) is sleeved on the grounding rod (34). The spring (36) is located between the baffle (35) and the support (29).

10. A soil sampling device for preventing mixing and stratification as described in claim 9, characterized in that, Two sliding grooves (33) are provided on one side of each of the four bases (31). A partition (37) is slidably connected in each of the four sliding grooves (33). The four partitions (37) are respectively matched with four lower mounting holes (32) and respectively matched with four grounding rods (34).

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