Soil pollution stratified sampler

Abstract

The invention relates to the technical field of soil sampling equipment, and discloses a soil pollution stratified sampler which comprises a top seat which is used as a basic component of the whole device and is used for assembling and bearing all treatment mechanisms and subordinate lower structural components of the treatment mechanisms; the sealing adjusting mechanism is arranged at the lower part of the top seat and is used for adjusting the height state of the whole device according to the field use condition and sealing flying dust generated in the sampling process; the soil sampling mechanism is arranged in the top seat, when the mechanism is used, the contact position of a sampling barrel and soil can be cooled through liquid nitrogen, the service life of the sampling equipment is greatly prolonged, and the temperature of a soil sample in the sampling barrel is conducted through the liquid nitrogen, so that the sampling efficiency is improved. Therefore, the soil sample in the sampling cylinder is quick-frozen and shaped, so that the integrity of the soil sample is ensured, and subsequent analytic research on soil pollution conditions at different depths by workers is facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of soil sampling equipment, in particular to a soil pollution stratified sampler. Background Art

[0002] Soil pollutants can be roughly divided into two categories: inorganic pollutants and organic pollutants. Inorganic pollutants mainly include acids, alkalis, heavy metals, salts, compounds of radioactive elements cesium and strontium, compounds containing arsenic, selenium, and fluorine, etc. Organic pollutants mainly include organic pesticides, phenols, cyanide, petroleum, synthetic detergents, harmful microorganisms brought by sludge and manure, etc. When there are too many harmful substances in the soil, exceeding the self-purification capacity of the soil, it will cause changes in the composition, structure and function of the soil, and microbial activities will be inhibited. Harmful substances or their decomposition products will gradually accumulate in the soil and be indirectly absorbed by the human body through "soil → plant → human body" or through "soil → water → human body", reaching a level that endangers human health. This is soil pollution.

[0003] In order to investigate the degree of soil pollution in a local area, soil sampling in the local area is very important. However, when the existing equipment is sampling soil, it is not only easy to destroy the original structure of the soil layer, but also for some areas with relatively dry climates, the samples after soil sampling are easy to disintegrate when separated, and thus cannot be used in subsequent research on soil pollution. Therefore, technicians in this field have proposed a soil pollution stratified sampler to solve the above-mentioned technical problems. Summary of the invention

[0004] In view of the deficiencies of the prior art, the present invention provides a soil pollution stratified sampler, which solves the problem that soil samples of the prior art soil sampling devices are prone to disintegration when sampling in some areas with relatively dry climates.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a soil pollution stratified sampler, comprising

[0006] The top seat, as the basic component of the whole device, is used to assemble and carry each processing mechanism and its subordinate lower structural parts;

[0007] The sealing adjustment mechanism is arranged at the lower part of the top seat, and is used to adjust the height of the whole device according to the on-site use conditions, and to seal the dust generated during the sampling process;

[0008] A soil sampling mechanism is arranged inside the top seat and is used to sample the soil in the exploration area;

[0009] A layered adjustment mechanism is provided in the soil sampling mechanism and is used to perform sampling processing at different depths according to sampling requirements;

[0010] The sample shaping mechanism is arranged at the rear side of the top seat and is used for shaping the soil sample collected by the soil sampling mechanism.

[0011] Preferably, the sealing adjustment mechanism includes a primary telescopic sleeve, the bottom of the top seat is slidably connected to the primary telescopic sleeve, the bottom of the primary telescopic sleeve is slidably connected to the secondary telescopic sleeve, the bottom of the secondary telescopic sleeve is provided with a rubber bottom sleeve, both sides of the top seat are fixedly connected with hand grip rods, the surfaces of the hand grip rods are provided with rubber protective sleeves, and observation windows are provided on both sides of the middle of the top end of the top seat.

[0012] Preferably, the soil sampling mechanism includes a mounting seat, a mounting seat is fixedly connected to the middle of the top end of the inner wall of the top seat, connecting rods are fixedly connected to the middle of both sides of the inner wall of the mounting seat, one end of the connecting rod away from the mounting seat is respectively fixedly connected to the corresponding position of the positioning ring seat, a sampling outer cylinder is arranged inside the positioning ring seat, a synchronization rod is rotatably connected to the middle of the inner top end of the mounting seat, and the bottom end of the synchronization rod is connected to the middle of the top end of the sampling outer cylinder.

[0013] Preferably, the soil sampling mechanism also includes a driving motor, which is arranged at the middle part of the top of the top seat, and the output end of the driving motor passes through the top seat and is connected to one end of the synchronization rod, an opening is provided on one side of the middle part of the top of the sampling outer cylinder, a mounting hole is provided on one side of the middle part of the top of the mounting seat, a guide tube is provided in the mounting hole, and the bottom end of the guide tube extends into the opening, and the top end of the guide tube passes through the corresponding position of the top seat and extends upward.

[0014] Preferably, the stratified adjustment mechanism includes a movable cavity, a movable cavity is provided in the middle and upper part of the inner side of the sampling outer cylinder, a sampling inner cylinder is slidably connected inside the movable cavity, a connecting seat is fixedly connected to the middle part of the top end of the sampling inner cylinder, a fixed socket is opened in the middle and upper part of the sampling outer cylinder, a fixing screw is provided in the fixing socket, and the middle part of the fixing screw passes through the connecting seat.

[0015] Preferably, the layered adjustment mechanism also includes a limit slot, and a plurality of limit slots are equidistantly provided on the inner wall of the movable cavity, and the limit slots are slidably connected with limit strips, and the inner walls of the limit strips are respectively connected to the corresponding positions of the sampling inner cylinder, and the bottom sides of the sampling inner cylinder are connected with semi-cylinders through hinges, and the middle and lower parts of the sampling outer cylinder are equidistantly provided with a plurality of adjustment holes.

[0016] Preferably, the sample shaping mechanism includes a liquid nitrogen generator, which is arranged on one side of the middle part of the rear end of the top seat, a top plate is rotatably connected to the middle and lower part of the outer wall of the sampling outer cylinder, a liquid nitrogen diverter seat is arranged on the top of the top plate, and a liquid nitrogen delivery pump is arranged on the other side of the middle part of the rear end of the top seat, the liquid outlet of the liquid nitrogen generator is connected with the liquid inlet of the liquid nitrogen delivery pump through a connecting pipe, the liquid outlet of the liquid nitrogen delivery pump is connected with the inside of the liquid nitrogen diverter seat through a bellows, and a fixed seat is arranged at the intersection of the bellows and the top seat.

[0017] Preferably, the sample shaping mechanism further comprises a rubber cover, a rubber cover is arranged at the outer wall edge of the top plate, a silicone pad is arranged at the bottom of the rubber cover, a spray ring seat is arranged at the bottom of the top plate, and the interior of the liquid nitrogen diverter seat is connected to the liquid inlet of the spray ring seat.

[0018] Working principle: When sampling the degree of soil pollution in a local area, the staff first moves the entire device to the position where sampling is required, and then the sealing adjustment mechanism is started. First, the staff determines the sampling depth of the area. After determining the sampling depth, the staff fixes the upper part of the entire device through the hand grip according to the determined sampling depth, and then pulls the first-level telescopic sleeve and the second-level telescopic sleeve on the top seat to unfold them. After unfolding, the rubber bottom sleeve at the bottom of the second-level telescopic sleeve contacts the ground, and the staff presses the entire device downward, so that the rubber bottom sleeve at the bottom of the second-level telescopic sleeve is deformed. The deformed rubber bottom sleeve seals the interior of the entire device to prevent the dust generated during the sampling process from affecting and polluting the surrounding environment and staff, thereby completing the sealing adjustment of the entire device; after the adjustment of the entire device is completed, the soil sampling mechanism is started, and the staff turns on the drive motor on the top seat through the control device. After the drive motor is turned on, the shaft of the drive motor drives the synchronous rod in the mounting seat to rotate, The synchronous rod drives the sampling outer cylinder in the positioning ring seat to rotate while rotating. As the sampling outer cylinder keeps rotating and then goes deeper, the first-level telescopic sleeve and the second-level telescopic sleeve on the top seat also shrink toward the top seat synchronously. As the sampling outer cylinder moves downward continuously, the soil in the sampling area continuously enters the sampling outer cylinder, thereby completing the sampling and processing of the soil samples in the sampling area. After the sampling outer cylinder moves downward to the specified depth and the sampling is completed, the driving motor on the top seat stops working, and then the staff moves the whole device upward through the hand lever on the top seat. After the sampling outer cylinder is completely raised to the ground, the staff inserts a push rod into the guide tube by tilting it, so that the end of the push rod is against the top of the sampling inner cylinder. Then the staff removes the fixing screw on the sampling outer cylinder, so as to contact the sampling outer cylinder and the sampling inner cylinder inside it. The staff then pushes the sampling inner cylinder in the sampling outer cylinder downward through the push rod in the guide tube. The sampling inner cylinder moves downward in the moving cavity of the sampling outer cylinder and squeezes out the soil sample at the bottom of the inner side of the sampling outer cylinder, thereby completing the sampling process of the soil sample in the sampling area;When it is necessary to adjust the sampling depth of the sampling area, the layered adjustment mechanism is activated. Before use, the staff first removes the fixing screw on the sampling outer tube from the position of the fixed jack, and then the staff moves the sampling inner tube in the moving cavity of the sampling outer tube downward, so that the bottom of the sampling inner tube extends from the inside of the sampling outer tube, extending the length of the overall sampling tube. After the position of the sampling inner tube in the sampling outer tube is adjusted, the staff inserts the fixing screw into the adjustment hole of the corresponding height, so that the adjusted connecting seat and the sampling inner tube at the bottom are fixed through the adjustment hole, and then the staff repeats the above-mentioned operation of the soil sampling mechanism to complete the sampling of soil materials at a deeper position; when the sampling area is adjusted, the staff can adjust the sampling depth of the sampling inner tube to a certain depth. After the soil samples in the area are sampled, the sample materials obtained by sampling are retained in the sampling outer tube or the sampling inner tube. At this time, the sample shaping mechanism is started, and the liquid nitrogen generator on the top seat generates liquid nitrogen while operating. Then, the liquid nitrogen generated by the liquid nitrogen generator is pumped by the liquid nitrogen delivery pump and sequentially transported to the liquid nitrogen diverter seat through the connecting pipe and the bellows. Then, the liquid nitrogen entering the liquid nitrogen diverter seat is sprayed to the sampling soil and the deep position of the soil tube through the spray ring seat in the rubber cover, and then the liquid nitrogen sprayed on the soil is used to quickly freeze the soil sample materials in the sampling tube. On the one hand, it is convenient for the subsequent discharge of soil sample materials, and on the other hand, it is also to promote the shaping of the soil samples in the sampling tube, so as to complete the shaping of the soil sample samples. ;

[0019] The present invention provides a soil pollution stratified sampler. It has the following beneficial effects:

[0020] 1. The present invention adds and sets a sealing adjustment mechanism. When performing stratified soil sampling in a local area, the mechanism can be adjusted according to the on-site environment and on-site use requirements, thereby improving the adaptability of the overall device during use. On the other hand, the sealing sampling position can be used to avoid pollution to surrounding workers and the surrounding environment during the sampling process.

[0021] 2. The present invention adds and sets a soil sampling mechanism. When sampling the soil at a designated location, the mechanism can firstly quickly complete the soil sampling operation in the designated area with high sampling efficiency. Moreover, after the soil sampling is completed, the mechanism can also ensure the integrity of the sampled soil sample when taking out the soil inside, thereby facilitating the staff to study the soil pollution situation in the area through the soil sampling sample.

[0022] 3. By adding and setting a stratification adjustment mechanism, the present invention can, when sampling and processing the soil in a designated area, adapt to deeper soil sampling operations by adjusting the overall length of the sampling tube, thereby improving the convenience of sampling deeper soils; on the other hand, the bottom opening and closing design can greatly facilitate the subsequent discharge of sampled samples, while also ensuring the completeness and stratification of the sampled samples when they are discharged.

[0023] 4. The present invention adds a sample shaping mechanism. When in use, the mechanism can not only cool the position where the sampling tube contacts the soil through liquid nitrogen, thereby greatly improving the service life of the sampling equipment, but also conduct the temperature of the soil sample inside the sampling tube through liquid nitrogen, so that the soil sample inside the sampling tube is quickly frozen and shaped, thereby ensuring the integrity of the soil sampling sample and facilitating subsequent analytical research on soil pollution at different depths by subsequent staff.

[0024] 5. The overall device of the present invention adopts a slidable and retractable design, which not only facilitates the storage of the overall device after use, but also facilitates the subsequent movement and transportation of the overall device. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the front structure of the present invention;

[0026] Figure 2 It is a schematic diagram of the rear structure of the present invention;

[0027] Figure 3 It is a schematic cross-sectional view of the internal structure of the present invention;

[0028] Figure 4 It is a schematic diagram of the local structure of the mounting seat of the present invention;

[0029] Figure 5 It is a schematic diagram of the structure of the sampling outer cylinder of the present invention;

[0030] Figure 6 It is a schematic cross-sectional view of the internal structure of the sampling outer cylinder of the present invention;

[0031] Figure 7 It is a schematic diagram of the local structure of the sampling inner cylinder of the present invention in the open state;

[0032] Figure 8 It is a schematic diagram of the local structure of the rubber cover of the present invention.

[0033] Among them, 1. top seat; 2. observation window; 3. first-level telescopic sleeve; 4. hand grip; 5. adjustment hole; 6. liquid nitrogen diverter seat; 7. top plate; 8. rubber bottom sleeve; 9. second-level telescopic sleeve; 10. liquid nitrogen delivery pump; 11. sampling outer cylinder; 12. liquid nitrogen generator; 13. driving motor; 14. connecting pipe; 15. silicone pad; 16. bellows; 17. connecting rod; 18. positioning ring seat; 19. mounting seat; 20. guide tube; 21. mounting hole; 22. fixed seat; 23. synchronization rod; 24. opening; 25. fixing screw; 26. fixing socket; 27. connecting seat; 28. limit card strip; 29. ​​sampling inner cylinder; 30. semi-cylinder; 31. limit card slot; 32. rubber cover; 33. spray ring seat; 34. moving cavity; 35. hinge. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings of the specification of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] Please refer to the attached Figure 1 - Attachment Figure 3 , an embodiment of the present invention provides a soil pollution stratified sampler, including a top seat 1, which is used as a basic component of the overall device for assembling and carrying various processing mechanisms and their subordinate structural parts;

[0036] A sealing adjustment mechanism is provided at the lower part of the top seat 1, and is used to adjust the height of the whole device according to the on-site use conditions, and to seal the dust generated during the sampling process;

[0037] The sealing adjustment mechanism includes a primary telescopic sleeve 3, the bottom of the top seat 1 is slidably connected to the primary telescopic sleeve 3, the bottom of the primary telescopic sleeve 3 is slidably connected to the secondary telescopic sleeve 9, the bottom of the secondary telescopic sleeve 9 is provided with a rubber bottom sleeve 8, both sides of the top seat 1 are fixedly connected with hand grip rods 4, the surfaces of the hand grip rods 4 are provided with rubber protective sleeves, and observation windows 2 are provided on both sides of the middle of the top end of the top seat 1.

[0038] When the sealing adjustment mechanism is started, the staff first determines the sampling depth of the area. After determining the sampling depth, the staff fixes the upper part of the whole device through the hand grip 4 according to the determined sampling depth, and then pulls the primary telescopic sleeve 3 and the secondary telescopic sleeve 9 on the top seat 1 to unfold them. After unfolding, the rubber bottom sleeve 8 at the bottom of the secondary telescopic sleeve 9 contacts the ground, and the staff presses the whole device downward to deform the rubber bottom sleeve 8 at the bottom of the secondary telescopic sleeve 9. The deformed rubber bottom sleeve 8 is used to seal the interior of the whole device to prevent the dust generated during the sampling process from affecting and polluting the surrounding environment and the staff, thereby completing the sealing adjustment of the whole device.

[0039] Please refer to the attached Figure 4 - Attachment Figure 5 , a soil sampling mechanism, which is arranged in the top seat 1 and is used for sampling and processing the soil in the exploration area;

[0040] The soil sampling mechanism includes a mounting seat 19, the mounting seat 19 is fixedly connected to the middle of the top end of the inner wall of the top seat 1, and connecting rods 17 are fixedly connected to the middle of both sides of the inner wall of the mounting seat 19. The ends of the connecting rods 17 away from the mounting seat 19 are respectively fixedly connected to the corresponding positions of the positioning ring seat 18. The interior of the positioning ring seat 18 is provided with a sampling outer cylinder 11. The middle of the inner top end of the mounting seat 19 is rotatably connected to a synchronization rod 23, and the bottom end of the synchronization rod 23 is connected to the middle of the top end of the sampling outer cylinder 11.

[0041] When the soil sampling mechanism is started, the staff turns on the driving motor 13 on the top seat 1 through the control device. After the driving motor 13 is turned on, the rotating shaft of the driving motor 13 drives the synchronous rod 23 in the mounting seat 19 to rotate. While rotating, the synchronous rod 23 drives the sampling outer cylinder 11 in the positioning ring seat 18 to rotate. As the sampling outer cylinder 11 rotates continuously, and then as the sampling outer cylinder 11 continues to go deeper, the primary telescopic sleeve 3 and the secondary telescopic sleeve 9 on the top seat 1 also shrink toward the top seat 1 synchronously, so that as the sampling outer cylinder 11 continues to move downward, the soil in the sampling area continues to enter the sampling outer cylinder 11, thereby completing the sampling and processing of the soil sample in the sampling area.

[0042] The soil sampling mechanism also includes a driving motor 13, which is arranged at the middle of the top of the top seat 1, and the output end of the driving motor 13 passes through the top seat 1 and is connected to one end of the synchronization rod 23. An opening 24 is provided on one side of the middle of the top of the sampling outer tube 11, and a mounting hole 21 is provided on one side of the middle of the top of the mounting seat 19. A guide tube 20 is provided in the mounting hole 21, and the bottom end of the guide tube 20 extends into the opening 24. The top end of the guide tube 20 passes through the corresponding position of the top seat 1 and extends upward.

[0043] After the sampling outer cylinder 11 moves down to the specified depth and the sampling is completed, the driving motor 13 on the top seat 1 stops working, and then the staff moves the entire device upward through the hand grip 4 on the top seat 1. After the sampling outer cylinder 11 completely rises above the ground, the staff inserts a push rod into the guide tube 20 at an angle, so that the end of the push rod is against the top of the sampling inner cylinder 29. Then the staff removes the fixing screw 25 on the sampling outer cylinder 11, thereby contacting the sampling outer cylinder 11 and the sampling inner cylinder 29 inside it.

[0044] Then the staff pushes the sampling inner cylinder 29 in the sampling outer cylinder 11 downward through the push rod in the guide tube 20. The sampling inner cylinder 29 moves downward in the movable cavity 34 of the sampling outer cylinder 11 and squeezes out the soil sample at the bottom of the inner side of the sampling outer cylinder 11, thereby completing the sampling process of the soil sample in the sampling area.

[0045] Please refer to the attached Figure 6 - Attachment Figure 7 , a layered adjustment mechanism, which is arranged in the soil sampling mechanism and is used to perform sampling processing at different depths according to sampling requirements;

[0046] The layered adjustment mechanism includes a movable cavity 34. The movable cavity 34 is arranged at the middle and upper part of the inner side of the sampling outer cylinder 11. The sampling inner cylinder 29 is slidably connected inside the movable cavity 34. The middle part of the top of the sampling inner cylinder 29 is fixedly connected with a connecting seat 27. The middle and upper part of the sampling outer cylinder 11 is provided with a fixed socket 26. A fixed screw 25 is arranged in the fixed socket 26, and the middle part of the fixed screw 25 passes through the connecting seat 27.

[0047] When the stratified adjustment mechanism is started, before use, the staff first removes the fixing screw 25 on the sampling outer cylinder 11 from the position of the fixing hole 26, and then the staff moves the sampling inner cylinder 29 in the moving cavity 34 of the sampling outer cylinder 11 downward, so that the bottom of the sampling inner cylinder 29 extends from the inside of the sampling outer cylinder 11, extending the length of the entire sampling cylinder.

[0048] The layered adjustment mechanism also includes a limit slot 31. A plurality of limit slots 31 are equidistantly provided on the inner wall of the movable cavity 34. The limit slots 31 are slidably connected with the limit strips 28. The inner walls of the limit strips 28 are respectively connected to the corresponding positions of the sampling inner cylinder 29. The bottom sides of the sampling inner cylinder 29 are connected to the semi-cylinder 30 through hinges 35. A plurality of adjustment holes 5 are equidistantly provided in the middle and lower part of the sampling outer cylinder 11.

[0049] After the position of the sampling inner cylinder 29 in the sampling outer cylinder 11 is adjusted, the staff inserts the fixing screw 25 into the adjustment hole 5 of the corresponding height, so that the adjusted connecting seat 27 and the sampling inner cylinder 29 at the bottom thereof are fixed through the adjustment hole 5. Then the staff repeats the above-mentioned operation of the soil sampling mechanism to complete the sampling process of soil materials at a deeper position.

[0050] Please refer to the attached Figure 8 The sample shaping mechanism is arranged at the rear side of the top seat 1 and is used for shaping the soil sample collected by the soil sampling mechanism.

[0051] The sample shaping mechanism includes a liquid nitrogen generator 12. The liquid nitrogen generator 12 is arranged on one side of the middle part of the rear end of the top seat 1. The middle and lower part of the outer wall of the sampling outer cylinder 11 is rotatably connected with a top plate 7. A liquid nitrogen diverter seat 6 is arranged on the top of the top plate 7. A liquid nitrogen delivery pump 10 is arranged on the other side of the middle part of the rear end of the top seat 1. The liquid outlet of the liquid nitrogen generator 12 is connected with the liquid inlet of the liquid nitrogen delivery pump 10 through a connecting pipe 14. The liquid outlet of the liquid nitrogen delivery pump 10 is connected with the inside of the liquid nitrogen diverter seat 6 through a bellows 16. A fixing seat 22 is arranged at the intersection of the bellows 16 and the top seat 1.

[0052] The sample shaping mechanism also includes a rubber cover 32 , which is arranged at the outer wall edge of the top plate 7 , a silicone pad 15 is arranged at the bottom of the rubber cover 32 , a spray ring seat 33 is arranged at the bottom of the top plate 7 , and the interior of the liquid nitrogen diverter seat 6 is connected to the liquid inlet of the spray ring seat 33 .

[0053] The sample shaping mechanism is started, and the liquid nitrogen generator 12 on the top seat 1 generates liquid nitrogen while operating. Then, the liquid nitrogen generated by the liquid nitrogen generator 12 is pumped by the liquid nitrogen delivery pump 10 and sequentially delivered to the liquid nitrogen diverter seat 6 through the connecting pipe 14 and the bellows 16. Then, the liquid nitrogen entering the liquid nitrogen diverter seat 6 is sprayed to the sampling soil and the deep position of the soil tube through the spray ring seat 33 in the rubber cover 32. Then, the liquid nitrogen sprayed on the soil quickly freezes the soil sample material in the sampling tube. On the one hand, it is convenient for the subsequent discharge of the soil sample material, and on the other hand, it also promotes the shaping of the soil sample in the sampling tube, thereby completing the shaping treatment of the soil sampling sample.

[0054] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A soil pollution stratified sampler, It is characterized in that include A top seat (1), which serves as a basic component of the overall device and is used to assemble and carry various processing mechanisms and their subordinate structural components; A sealing adjustment mechanism is arranged at the bottom of the top seat (1) and is used to adjust the height of the entire device according to the on-site usage conditions and to seal the dust generated during the sampling process; A soil sampling mechanism, which is arranged inside the top seat (1) and is used to sample the soil in the exploration area; A layered adjustment mechanism is provided in the soil sampling mechanism and is used to perform sampling processing at different depths according to sampling requirements; The sample shaping mechanism is arranged on the rear side of the top seat (1) and is used to shape the soil sample collected by the soil sampling mechanism.

2. A soil pollution stratified sampler according to claim 1, It is characterized in that The sealing adjustment mechanism comprises a primary telescopic sleeve (3), the bottom of the top seat (1) is slidably connected to the primary telescopic sleeve (3), the bottom of the primary telescopic sleeve (3) is slidably connected to the secondary telescopic sleeve (9), the bottom of the secondary telescopic sleeve (9) is provided with a rubber bottom sleeve (8), both sides of the top seat (1) are fixedly connected to a handle bar (4), the surface of the handle bar (4) is provided with a rubber protective sleeve, and both sides of the middle of the top of the top seat (1) are provided with observation windows (2).

3. A soil pollution stratified sampler according to claim 1, It is characterized in that The soil sampling mechanism comprises a mounting seat (19), the mounting seat (19) is fixedly connected to the middle of the top end of the inner wall of the top seat (1), connecting rods (17) are fixedly connected to the middle of both sides of the inner wall of the mounting seat (19), one end of the connecting rod (17) away from the mounting seat (19) is respectively fixedly connected to the corresponding position of the positioning ring seat (18), the positioning ring seat (18) is provided with a sampling outer cylinder (11) inside, the middle of the inner top end of the mounting seat (19) is rotatably connected to a synchronization rod (23), and the bottom end of the synchronization rod (23) is connected to the middle of the top end of the sampling outer cylinder (11).

4. A soil pollution stratified sampler according to claim 3, It is characterized in that The soil sampling mechanism further comprises a driving motor (13), the driving motor (13) being arranged at the middle of the top of the top seat (1), and the output end of the driving motor (13) passing through the top seat (1) and connected to one end of a synchronization rod (23), an opening (24) being arranged at one side of the middle of the top of the sampling outer cylinder (11), a mounting hole (21) being arranged at one side of the middle of the top of the mounting seat (19), a guide tube (20) being arranged in the mounting hole (21), and the bottom end of the guide tube (20) extending into the opening (24), and the top end of the guide tube (20) passing through the corresponding position of the top seat (1) and extending upward.

5. A soil pollution stratified sampler according to claim 4, It is characterized in that The layered adjustment mechanism comprises a movable cavity (34), the movable cavity (34) is arranged at the middle and upper part of the inner side of the sampling outer cylinder (11), the interior of the movable cavity (34) is slidably connected with the sampling inner cylinder (29), the middle part of the top end of the sampling inner cylinder (29) is fixedly connected with the connecting seat (27), the middle and upper part of the sampling outer cylinder (11) is provided with a fixed plug hole (26), a fixed screw (25) is arranged in the fixed plug hole (26), and the middle part of the fixed screw (25) passes through the connecting seat (27).

6. A soil pollution stratified sampler according to claim 5, It is characterized in that The layered adjustment mechanism also includes a limit slot (31), and a plurality of limit slots (31) are equidistantly provided on the inner wall of the movable cavity (34), and a limit strip (28) is slidably connected in each of the limit slots (31), and the inner walls of the limit strip (28) are respectively connected to corresponding positions of the sampling inner cylinder (29), and both sides of the bottom of the sampling inner cylinder (29) are connected to a semi-circular cylinder (30) via hinges (35), and a plurality of adjustment holes (5) are equidistantly provided in the middle and lower part of the sampling outer cylinder (11).

7. A soil pollution stratified sampler according to claim 4, It is characterized in that The sample shaping mechanism comprises a liquid nitrogen generator (12), the liquid nitrogen generator (12) is arranged on one side of the middle part of the rear end of the top seat (1), the middle and lower part of the outer wall of the sampling outer cylinder (11) is rotatably connected with a top plate (7), the top of the top plate (7) is provided with a liquid nitrogen diverter seat (6), the other side of the middle part of the rear end of the top seat (1) is provided with a liquid nitrogen delivery pump (10), the liquid outlet of the liquid nitrogen generator (12) is connected to the liquid inlet of the liquid nitrogen delivery pump (10) through a connecting pipe (14), the liquid outlet of the liquid nitrogen delivery pump (10) is connected to the inside of the liquid nitrogen diverter seat (6) through a bellows (16), and a fixing seat (22) is arranged at the intersection of the bellows (16) and the top seat (1).

8. A soil pollution stratified sampler according to claim 7, It is characterized in that The sample shaping mechanism further comprises a rubber cover (32), the outer wall edge of the top plate (7) is provided with the rubber cover (32), the bottom of the rubber cover (32) is provided with a silicone pad (15), the bottom of the top plate (7) is provided with a spray ring seat (33), and the interior of the liquid nitrogen diverter seat (6) is communicated with the liquid inlet of the spray ring seat (33).

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