A device and method for sampling a saline ground surface substrate

Abstract

This invention discloses a sampling device and method for saline-alkali surface matrix, relating to the field of sampling equipment technology. It includes an outer casing, with a servo motor installed inside. A telescopic rod is installed at the output end of the servo motor, and a movable plate is installed at the end of the telescopic rod away from the servo motor. A sampling tube is rotatably connected to the inner side of the outer casing. The movable plate and the sampling tube are movably connected. A precision sampling component is provided on the sampling tube. The precision sampling component includes a sliding plate slidably disposed inside the sampling tube, which moves upward to separate the sampling tube from the movable plate; a limiting plate slidably disposed on the outer side of the sampling tube, which moves upward by pressing against the ground; and multiple rubber plates rotatably connected to the bottom of the limiting plate. By setting the precision sampling component, this invention limits the sampling depth by setting a preset position on the limiting plate when the sampling tube is inserted into the soil for sampling, automatically stopping sampling when the sampling tube is inserted to the preset depth, thus ensuring sampling accuracy.

Description

Technical Field

[0001] This invention relates to the field of sampling equipment technology, and in particular to a sampling device and method for saline surface matrix. Background Technology

[0002] Saline soil is land containing excessive soluble salts, resulting in altered properties. In arid or semi-arid regions, the surface is often covered with a white, frost-like or snow-like substance—this is salt accumulated on the surface. This type of soil is also known as saline soil or saline-alkali soil. According to national standards, when the soluble salt content in the soil exceeds 0.3% and exhibits special engineering properties such as dissolution, salt swelling, and corrosion, it is defined as saline soil. These soluble salts mainly include chlorides, sulfates, and carbonates of sodium, potassium, calcium, and magnesium. High salinity can harm crop growth. By sampling and analyzing soil indicators such as salt content, pH, and nutrient composition, a scientific basis can be provided for the improvement of saline-alkali farmland and the selection of salt-tolerant crops, directly serving agricultural production. Sampling is typically done by inserting a drill rod into the soil to retrieve samples.

[0003] Conventional sampling equipment mainly relies on manual experience and rough marking to determine the sampling depth, resulting in low sampling accuracy, poor consistency, and easy sample distortion due to operational errors. It cannot meet the strict requirements for precise research on saline soil stratification. Therefore, a sampling device and method for saline surface matrix is ​​proposed. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies that rely on manual experience and rough marking to determine sampling depth, resulting in low sampling accuracy, poor consistency, and easy sample distortion due to operational errors, thus failing to meet the stringent requirements for precise stratification research of saline soils. Therefore, this invention proposes a sampling device and method for saline surface matrix.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A sampling device for saline-alkali surface matrix includes an outer shell. A servo motor is installed inside the outer shell, and a telescopic rod is installed at the output end of the servo motor. A movable plate is installed at the end of the telescopic rod away from the servo motor. A sampling tube is rotatably connected to the inner side of the outer shell. The movable plate is movably connected to the sampling tube. A precision sampling component is provided on the sampling tube. The precision sampling component includes a sliding plate slidably disposed inside the sampling tube, which moves upward to separate the sampling tube from the movable plate; a limiting plate slidably disposed on the outer side of the sliding plate and the sampling tube, which moves upward by pressing against the ground; multiple rubber plates rotatably connected to the bottom of the limiting plate; and a locking unit jointly disposed between the sliding plate and the limiting plate to fix the limiting plate. A sensor for monitoring the height of the movable plate is installed inside the outer shell. The sampling depth is limited by a preset position of the limiting plate, and sampling automatically stops when the sampling tube is inserted to the preset depth, ensuring sampling accuracy.

[0006] The above technical solution further includes: A connecting block is installed at the end of the movable plate away from the telescopic rod. A connecting groove is opened at the upper part of the sampling tube. The connecting block and the connecting groove are movably connected. The opening size of the connecting groove is adapted to the size of the connecting block. When the connecting block moves to the outside of the connecting groove, the movable plate no longer drives the sampling tube to rotate.

[0007] The sampling tube has a first sliding groove on its inner side, and a second sliding groove on its inner side. A sliding block is slidably disposed inside the second sliding groove. The side of the sliding block is fixedly connected to a sliding plate. A round rod is installed inside the second sliding groove and is slidably connected to the sliding block. A third spring is installed on the upper part of the sliding block, and the other end of the third spring is fixedly connected to the inner wall of the second sliding groove.

[0008] The sliding plate is equipped with a scale plate on its side, and the position of the limiting plate is adjusted by the corresponding position of the scale displayed on the scale plate.

[0009] A rotating wheel is rotatably connected to the top of the sliding plate, and the rotating wheel contacts the sampling tube when the sliding plate moves upward.

[0010] The bottom of the limiting plate has multiple square slots. A rotating rod is rotatably connected to the inner side of the square slots. A torsion spring is installed on the outer side of the rotating rod. The other end of the torsion spring is fixedly connected to the inner wall of the square slot. A rubber plate is installed on the outer side of the rotating rod.

[0011] The locking unit includes multiple circular grooves formed on the inner side of the sliding plate. A first spring is installed inside the circular groove, and a circular plate is installed at the other end of the first spring. The circular plate is movably connected to the circular groove, and the opening size of the circular groove is adapted to the size of the circular plate.

[0012] The locking unit also includes a movable rod movably connected to the inner side of the limiting plate. A second spring is installed on the outer side of the movable rod, and the other end of the second spring is fixedly connected to the limiting plate. The end of the movable rod is movably connected to the circular groove. The movable rod is inserted into the inner side of the circular groove by pressing the circular plate to lock the position of the adjusted limiting plate.

[0013] Handles are symmetrically installed on the outer side of the outer casing.

[0014] A method for sampling saline surface matrix, employing a saline surface matrix sampling device as described in the outer shell of the claims, includes the following steps; Step 1: Adjust the height of the limiting plate according to the required sampling depth, then pick up the outer shell and start the servo motor. The servo motor drives the sampling tube to rotate through the telescopic rod and the movable plate. The sampling tube rotates and is inserted into the soil to take a sample. Step 2: When the sampling tube rotates to take a sample, it drives the limiting plate to rotate. When the limiting plate rotates, it drives multiple rubber plates to rotate. When the rubber plates rotate, they scrape away debris from the soil surface. Step 3: When the limiting plate comes into contact with the ground, it squeezes the ground and drives the sliding plate to move up. When the sliding plate moves up, it pushes the movable plate and separates the movable plate from the sampling tube, so that the sampling tube no longer drills into the soil. The sensing equipment detects that when the movable plate moves up, it cuts off the rotation of the servo motor.

[0015] The present invention has the following beneficial effects: In this invention, by setting a precision sampling component, when the sampling tube is inserted into the soil for sampling, the sampling depth is limited by a preset position of the limiting plate, and the sampling automatically stops when the sampling tube is inserted to the preset depth, thus ensuring the accuracy of the sampling. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of a salinized surface matrix sampling device and method proposed in this invention. Figure 2 This is a schematic diagram of the overall side first cross-sectional structure of the present invention; Figure 3 This is a schematic diagram of the overall side second sectional view structure in this invention; Figure 4 This is a schematic diagram of the overall side third sectional view structure in this invention; Figure 5 for Figure 2 Enlarged schematic diagram of the structure at point A in the middle; Figure 6 for Figure 3 Enlarged schematic diagram of the structure at point B; Figure 7 for Figure 6 Enlarged schematic diagram of the structure at point C; Figure 8 for Figure 3 Enlarged schematic diagram of the structure at point D; Figure 9 for Figure 4 Enlarged schematic diagram of the structure at point E in the middle.

[0017] In the diagram: 1. Outer shell; 2. Handle; 3. Servo motor; 4. Telescopic rod; 5. Movable plate; 6. Sampling tube; 7. Connecting block; 8. Connecting groove; 9. Sensing device; 10. First sliding groove; 11. Sliding plate; 12. Scale plate; 13. Circular groove; 14. First spring; 15. Circular plate; 16. Limiting plate; 17. Movable rod; 18. Second spring; 19. Square groove; 20. Rotating rod; 21. Torsion spring; 22. Rubber plate; 23. Second sliding groove; 24. Circular rod; 25. Sliding block; 26. Third spring; 27. Rotating wheel. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] like Figure 1 - Figure 9 As shown, the present invention proposes a sampling device for saline surface matrix, comprising an outer shell 1, a servo motor 3 installed inside the outer shell 1, a telescopic rod 4 installed at the output end of the servo motor 3, a movable plate 5 installed at the end of the telescopic rod 4 away from the servo motor 3, a sampling tube 6 rotatably connected to the inner side of the outer shell 1, and a movable connection between the movable plate 5 and the sampling tube 6. A precision sampling component is provided on the sampling tube 6, the precision sampling component including a sliding mechanism slidably disposed inside the sampling tube 6, which, when moved upwards, causes the sampling tube 6 to separate from the movable plate 5. The outer sides of the plate 11, the sliding plate 11, and the sampling tube 6 are slidably arranged together. A limiting plate 16, which moves the sliding plate 11 upward by pressing against the ground, is a limiting plate 16. Multiple rubber plates 22 are rotatably connected to the bottom of the limiting plate 16. A locking unit is set between the sliding plate 11 and the limiting plate 16 to fix the limiting plate 16. A sensor 9 for monitoring the height of the movable plate 5 is installed on the inner side of the outer shell 1. The sampling depth is limited by the preset position of the limiting plate 16. Sampling is automatically stopped when the sampling tube 6 is inserted to the preset depth to ensure the accuracy of sampling.

[0020] A connecting block 7 is installed at the end of the movable plate 5 away from the telescopic rod 4. A connecting groove 8 is opened on the upper part of the sampling tube 6. The connecting block 7 and the connecting groove 8 are movably connected. The opening size of the connecting groove 8 is adapted to the size of the connecting block 7. When the connecting block 7 moves to the outside of the connecting groove 8, the movable plate 5 no longer drives the sampling tube 6 to rotate.

[0021] The sampling tube 6 has a first sliding groove 10 on its inner side, and a second sliding groove 23 on its inner side. A sliding block 25 is slidably disposed inside the second sliding groove 23. The side of the sliding block 25 is fixedly connected to the sliding plate 11. A round rod 24 is installed inside the second sliding groove 23. The round rod 24 is slidably connected to the sliding block 25. A third spring 26 is installed on the upper part of the sliding block 25. The other end of the third spring 26 is fixedly connected to the inner wall of the second sliding groove 23.

[0022] A scale plate 12 is installed on the side of the sliding plate 11. The position of the limiting plate 16 is adjusted by the corresponding position of the scale displayed on the scale plate 12.

[0023] A rotating wheel 27 is rotatably connected to the top of the sliding plate 11. When the sliding plate 11 moves upward, the rotating wheel 27 contacts the sampling tube 6.

[0024] The bottom of the limiting plate 16 is provided with multiple square grooves 19. A rotating rod 20 is rotatably connected to the inner side of the square groove 19. A torsion spring 21 is installed on the outer side of the rotating rod 20. The other end of the torsion spring 21 is fixedly connected to the inner wall of the square groove 19. A rubber plate 22 is installed on the outer side of the rotating rod 20.

[0025] The locking unit includes a plurality of circular grooves 13 formed on the inner side of the sliding plate 11. A first spring 14 is installed inside the circular groove 13. A circular plate 15 is installed at the other end of the first spring 14. The circular plate 15 is movably connected to the circular groove 13. The opening size of the circular groove 13 is adapted to the size of the circular plate 15.

[0026] The locking unit also includes a movable rod 17 movably connected to the inner side of the limiting plate 16. A second spring 18 is installed on the outer side of the movable rod 17. The other end of the second spring 18 is fixedly connected to the limiting plate 16. The end of the movable rod 17 is movably connected to the circular groove 13. The movable rod 17 is inserted into the inner side of the circular groove 13 by pressing the circular plate 15 to lock the position of the adjusted limiting plate 16.

[0027] Handles 2 are symmetrically installed on the outer side of the outer casing 1.

[0028] In this embodiment, when sampling is required, the position of the limiting plate 16 is first adjusted according to the required sampling depth. The movable rod 17 is pulled and moved to the outside of the circular groove 13. At this time, the second spring 18 is stretched, the limiting plate 16 is slid, and the adjustment is made according to the corresponding position of the scale displayed on the scale plate 12. Then the movable rod 17 is released. At this time, the movable rod 17, which is in a stretched state, resets and squeezes the circular plate 15 and inserts it into the inner side of the circular groove 13 at the corresponding position. At the same time, the first spring 14 is driven to retract. At this time, the handle 2 can be picked up, and then the servo motor 3 is started. After the servo motor 3 is started, the sampling tube 6 is driven to rotate through the telescopic rod 4 and the movable plate 5. Then, the sampling tube 6 is inserted into the soil for sampling by rotating. When the sampling tube 6 rotates, it drives the limiting plate 16 to rotate. When the limiting plate 16 rotates, it drives multiple rubber rods to rotate. The rubber plate 22 rotates, scraping away impurities on the soil surface. When the limiting plate 16 contacts the ground, the rubber plate 22 is compressed and rotates around the rotating rod 20 to be stored. At this time, the torsion spring 21 contracts. When the limiting plate 16 contacts the ground and is compressed, it drives the sliding plate 11 to move along the second sliding groove 23 and the round rod 24 through the sliding block 25. At this time, the third spring 26 contracts, and at the same time drives the sliding plate 11 to move along the first sliding groove 10. When the sliding plate 11 moves upward, it squeezes the movable plate 5 through the rotating wheel 27 and pushes the movable plate 5 to move upward, thereby moving the connecting block 7 to the outside of the connecting groove 8. When the sensing device 9 detects that the movable plate 5 moves upward, it stops the servo motor 3 from rotating, so that sampling is automatically stopped when the sampling tube 6 is inserted to a preset depth, ensuring the accuracy of sampling.

[0029] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sampling device for saline surface matrix, comprising an outer shell (1), characterized in that, A servo motor (3) is installed on the inner side of the outer casing (1). A telescopic rod (4) is installed on the output end of the servo motor (3). A movable plate (5) is installed on the end of the telescopic rod (4) away from the servo motor (3). A sampling tube (6) is rotatably connected to the inner side of the outer casing (1). The movable plate (5) is movably connected to the sampling tube (6). A precision sampling component is provided on the sampling tube (6). The precision sampling component includes a component that is slidably disposed on the inner side of the sampling tube (6) and moves upward to drive the sampling tube. The outer shell (1) is equipped with a sliding plate (11) that separates the sampling tube (6) from the movable plate (5), a limiting plate (16) that slides together with the outer side of the sliding plate (11) and the sampling tube (6) and moves the sliding plate (11) upward by pressing against the ground, multiple rubber plates (22) that are rotatably connected to the bottom of the limiting plate (16), and a locking unit that fixes the limiting plate (16) together between the sliding plate (11) and the limiting plate (16). A sensing device (9) for monitoring the height of the movable plate (5) is installed on the inner side of the outer shell (1).

2. The sampling device for saline surface matrix according to claim 1, characterized in that, A connecting block (7) is installed at the end of the movable plate (5) away from the telescopic rod (4). A connecting groove (8) is provided on the upper part of the sampling tube (6). The connecting block (7) and the connecting groove (8) are movably connected. The opening size of the connecting groove (8) is adapted to the size of the connecting block (7).

3. The sampling device for saline surface matrix according to claim 1, characterized in that, The sampling tube (6) has a first sliding groove (10) on its inner side and a second sliding groove (23) on its inner side. A sliding block (25) is slidably disposed inside the second sliding groove (23). The side of the sliding block (25) is fixedly connected to the sliding plate (11). A round rod (24) is installed inside the second sliding groove (23). The round rod (24) is slidably connected to the sliding block (25). A third spring (26) is installed on the upper part of the sliding block (25). The other end of the third spring (26) is fixedly connected to the inner wall of the second sliding groove (23).

4. The sampling device for saline surface matrix according to claim 1, characterized in that, A scale plate (12) is installed on the side of the sliding plate (11).

5. A sampling device for saline surface matrix according to claim 4, characterized in that, The top of the sliding plate (11) is rotatably connected to a rotating wheel (27), and when the sliding plate (11) moves upward, the rotating wheel (27) contacts the sampling tube (6).

6. The sampling device for saline surface matrix according to claim 1, characterized in that, The bottom of the limiting plate (16) is provided with a plurality of square grooves (19). A rotating rod (20) is rotatably connected to the inner side of the square groove (19). A torsion spring (21) is installed on the outer side of the rotating rod (20). The other end of the torsion spring (21) is fixedly connected to the inner wall of the square groove (19). The rubber plate (22) is installed on the outer side of the rotating rod (20).

7. A sampling device for saline surface matrix according to claim 1, characterized in that, The locking unit includes a plurality of circular grooves (13) formed on the inner side of the sliding plate (11). A first spring (14) is installed inside the circular groove (13). A circular plate (15) is installed at the other end of the first spring (14). The circular plate (15) is movably connected to the circular groove (13). The opening size of the circular groove (13) is adapted to the size of the circular plate (15).

8. A sampling device for saline surface matrix according to claim 7, characterized in that, The locking unit also includes a movable rod (17) movably connected to the inner side of the limiting plate (16). A second spring (18) is installed on the outer side of the movable rod (17). The other end of the second spring (18) is fixedly connected to the limiting plate (16). The end of the movable rod (17) is movably connected to the circular groove (13). The movable rod (17) is inserted into the inner side of the circular groove (13) by pressing the circular plate (15).

9. A sampling device for saline surface matrix according to claim 1, characterized in that, Handles (2) are symmetrically installed on the outer side of the outer shell (1).

10. A method for sampling saline surface matrix, employing the saline surface matrix sampling device described in claim (1), characterized in that, Includes the following steps; Step 1: Adjust the height of the limiting plate (16) according to the required sampling depth, then pick up the outer shell (1) and start the servo motor (3). The servo motor (3) drives the sampling tube (6) to rotate through the telescopic rod (4) and the movable plate (5). The sampling tube (6) rotates and is inserted into the soil for sampling. Step 2: When the sampling tube (6) rotates to take a sample, it drives the limiting plate (16) to rotate. When the limiting plate (16) rotates, it drives multiple rubber plates (22) to rotate. When the rubber plates (22) rotate, they scrape away the debris on the soil surface. Step 3: When the limiting plate (16) comes into contact with the ground, it squeezes the ground and drives the sliding plate (11) to move upward. When the sliding plate (11) moves upward, it pushes the movable plate (5) and separates the movable plate (5) from the sampling tube (6), so that the sampling tube (6) no longer drills into the soil. The sensing device (9) monitors the movement of the bottom movable plate (5) and cuts off the rotation of the servo motor (3).

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