A soil sampling device for saline-alkali land remediation

Abstract

This utility model discloses a soil sampling device for saline-alkali land remediation, relating to the field of soil sampling technology. The utility model includes a sampling frame, a sampling rod rotatably connected to the top of the sampling frame, a rotating handle installed at the top of the sampling rod, a drill bit at the bottom of the sampling rod, a sampling chamber at the bottom of the sampling rod, multiple sampling windows on the periphery of the sampling chamber, a mud-blocking cylinder installed inside the bottom of the sampling rod, an adjustment groove in the middle of the sampling rod, and an adjustment rod fixedly connected to one side of the mud-blocking cylinder. By incorporating a mud-blocking cylinder inside the bottom of the sampling rod with its bottom open, and by providing an adjustment groove in the middle of the sampling rod and installing an adjustment rod in the middle of the mud-blocking cylinder, this utility model effectively isolates the deep soil being sampled from the surface soil before and after drilling throughout the entire process of deep soil sampling, thereby improving sampling accuracy.

Description

Technical Field

[0001] This utility model belongs to the field of soil sampling technology, specifically relating to a soil sampling device for saline-alkali land remediation. Background Technology

[0002] Soil sampling in saline-alkali land is an important step in understanding soil properties and developing improvement measures. Before and after sampling, it is necessary to plan the layout of sampling points, use equipment to collect samples, and record the sampling results. Appropriate soil sampling equipment must be used during sampling.

[0003] The patent specification with publication number CN219890784U discloses a soil sampler for saline-alkali land, including a mounting column, a rotating seat movably connected to the right end of the mounting column, a threaded rod threadedly connected to the inner side of the rotating seat, a sampling cylinder fixedly connected to the end of the threaded rod away from the mounting column, a limit column fixedly connected to the end of the threaded rod away from the sampling cylinder, and a fixed seat fixedly connected to the end of the rotating seat close to the sampling cylinder. This type of sampler moves by rotating a rotating base, constrained by a limiting post and a slide rail, using a threaded rod connected by a threaded hole. This simultaneously drives the sampling cylinder, and the sampling depth is controlled by an indicator needle and a scale. However, this technical solution has a drawback: while the sampler's drilling depth is adjusted using a scale, the drilling process is gradual. Even when the sampler reaches the ground, it inevitably carries some surface soil down with it. This results in the final soil sample being surface soil. Therefore, when testing pH, the final drilling depth is used as the recording depth, but the sampled soil consists of a small portion of surface soil and a large portion of deep soil, leading to a discrepancy between the test data and the actual soil composition.

[0004] No effective solutions have yet been proposed to address the problems in the relevant technologies. Utility Model Content

[0005] The purpose of this utility model is to provide a soil sampling device for saline-alkali land treatment. The technical problem to be solved is as follows: When existing soil sampling devices perform deep soil sampling, the sampled soil will be mixed with some surface soil, resulting in deviations in the test results.

[0006] The objective of this utility model can be achieved through the following technical solutions: A soil sampling device for saline-alkali land remediation includes a sampling frame, a sampling rod rotatably connected to the top of the sampling frame, a rotating handle installed at the top of the sampling rod, a drill bit at the bottom of the sampling rod, a sampling chamber at the bottom of the sampling rod, multiple sampling windows on the periphery of the sampling chamber, a mud-blocking cylinder installed inside the bottom of the sampling rod, an adjustment groove in the middle of the sampling rod, and an adjustment rod fixedly connected to one side of the mud-blocking cylinder. The adjustment groove and the adjustment rod are used to adjust the obstruction state of the sampling windows by the mud-blocking cylinder.

[0007] As a further embodiment of this utility model: the vertical surface of the sampling frame is conical, and two rollers are installed on both sides of the bottom of the sampling frame.

[0008] As a further embodiment of this utility model: the top end of the sampling rod is threadedly connected to the sampling frame, and the bottom center of the sampling frame is provided with a through-hole, the opening of which is larger than the diameter of the sampling rod.

[0009] As a further embodiment of this utility model: the bottom of the mudguard is open, and its peripheral side is in contact with the inner wall of the sampling chamber; the sampling rod above the drill bit is hollow; and the top of the mudguard is higher than the top of the adjustment groove.

[0010] As a further embodiment of this utility model: the width of the adjustment groove is greater than the diameter of the adjustment rod, the adjustment groove is an integral groove, one side of the adjustment groove is a long vertical strip and the top is horizontal, and the other side is a short vertical strip.

[0011] As a further embodiment of this utility model: the sampling window is double-layered, and each layer is evenly arranged along the periphery of the sampling rod, and a soil cutting blade is provided on one side of the sampling window.

[0012] The beneficial effects of this utility model are: By installing a mudguard inside the sampling rod and rotating it, setting an adjustment groove in the middle of the sampling rod, and installing an adjustment rod on the outside of the mudguard that matches the adjustment groove, and setting the bottom of the mudguard to be open, each sampling window is blocked by the mudguard and kept closed when the drill bit drills into the deep soil. Then, by moving the mudguard upward with the adjustment rod and rotating the sampling rod again, the deep soil is taken into the sampling chamber. The mudguard is then moved downward to seal the soil. Finally, the sampling rod is moved upward to avoid contact between the surface soil and the collected soil during the return trip. This achieves stable sampling of deep soil and avoids contamination of deep soil by surface soil when the sample is drilled underground and removed from the surface, thereby improving sampling accuracy. With the use of rollers and sampling frames, the sampling and transfer of control group samples can be carried out quickly, thereby indirectly improving the accuracy of soil pH test results. Attached Figure Description

[0013] The present invention will be further described below with reference to the accompanying drawings.

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a partially exploded cross-sectional view of this utility model; Figure 3 This is a utility model Figure 2 Enlarged detail view of point A in the middle; Figure 4 This is a utility model Figure 3 A magnified view of the details at point B in the middle.

[0015] In the diagram: 1. Sampling frame; 2. Sampling rod; 3. Rotating handle; 4. Drill bit; 5. Sampling chamber; 6. Sampling window; 7. Mud guard; 8. Adjustment groove; 9. Adjustment rod; 10. Roller; 11. Exit; 12. Soil cutting blade. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0017] like Figures 1 to 4 As shown, a soil sampling device for saline-alkali land treatment includes a sampling frame 1, a sampling rod 2 rotatably connected to the top of the sampling frame 1, a rotating handle 3 installed at the top of the sampling rod 2, a drill bit 4 at the bottom of the sampling rod 2, a sampling chamber 5 at the bottom of the sampling rod 2, six sampling windows 6 on the sides of the sampling chamber 5, a mud-blocking cylinder 7 sleeved inside the bottom of the sampling rod 2, an adjustment groove 8 in the middle of the sampling rod 2, and an adjustment rod 9 fixedly connected to one side of the mud-blocking cylinder 7. The adjustment groove 8 and the adjustment rod 9 are used to adjust the obstruction state of the mud-blocking cylinder 7 on the sampling windows 6. It should be noted that the sampling frame 1 is generally tapered with a wider base and a narrower top. Rollers 10 are installed on both sides of the sampling frame 1. The rollers 10 are used to move the sampling frame 1 easily. The purpose is that when sampling soil in a certain area, it is necessary to take multiple samples of soil within a certain range for the control group. Therefore, by setting the sampling frame 1 to a tapered shape with a low center of gravity and using the rollers 10 to transfer the sampling position, the convenience and stability of moving the equipment during control group sampling are improved. In addition, the rollers 10 include, but are not limited to, rubber wheels and self-locking casters to improve stability during use.

[0018] like Figure 1 and Figure 2As shown, the top of the sampling rod 2 is threadedly connected to the sampling frame 1, and the sampling frame 1 has an opening 11 at the bottom center, the opening of which is larger than the diameter of the sampling rod 2. It should be noted that when the rotating handle 3 rotates, it drives the conical drill bit 4 at the bottom of the sampling rod 2 to drill into the ground. After sampling is completed, when the rotating handle 3 is rotated in the opposite direction to bring the sampling rod 2 out of the ground, the sampled soil at the bottom of the sampling rod 2 is not disturbed by the bottom structure of the sampling frame 1 and can be easily brought out through the through-hole 11. Preferably, when the rotating handle 3 is rotated to the highest position, the bottom height of the drill bit 4 is greater than the bottom height of the roller 10, thereby ensuring that the sampling frame 1 can be easily transferred after sampling is completed.

[0019] like Figures 2 to 4 As shown, the bottom of the mudguard 7 is open (not shown), and its circumferential side is in contact with the inner wall of the sampling chamber 5. The sampling rod 2 is hollow above the drill bit 4. The top of the mudguard 7 is higher than the top of the adjustment groove 8. That is, the longer mudguard 7 is used to cooperate with the adjustment rod 9 to adjust the overall closing and opening state of the sampling window 6. The width of the adjustment groove 8 is greater than the diameter of the adjustment rod 9. The adjustment groove 8 is an integral groove. One side of the adjustment groove 8 is a long vertical strip with a horizontal top, and the other side is a short vertical strip. The sampling window 6 is double-layered and evenly arranged along the sides of the sampling rod 2. The sampling window 6 has a soil cutting blade 12 on one side along the drilling direction of the drill bit 4. It should be noted that when performing deep soil sampling, the adjustment rod 9 should first be moved along the adjustment groove 8 to the bottom position (see...). Figure 1 At this point, because the side of the mudguard 7 is in contact with the inner wall of the sampling rod 2, the sides of the mudguard 7 completely block all the sampling windows 6. Then, the rotating handle 3 is rotated to drill the drill bit 4 into the predetermined deep soil layer. Since the sampling windows 6 are in a closed state during this process, that is, no soil is sampled during the bottom drilling stage, the adjusting rod 9 is then moved to the high position of the adjusting groove 8 and limited in a way of moving upward, laterally, and then downward. At this point, all the sampling windows 6 are open. Then, the rotating handle 3 is rotated again to drill the ground. The soil enters the sampling chamber 5 under the cutting edge 12. Finally, the adjusting rod 9 is reset to the low position of the adjusting groove 8. At this time, the bottom opening of the mud-blocking cylinder 7 seals the collected deep soil and closes each sampling window 6 again. During the return trip of the sampling rod 2 to the ground, the surface soil can be prevented from contacting the deep soil sealed inside the mud-blocking cylinder 7. This achieves stable sampling of deep soil and avoids mixing between surface soil and deep soil during sampling, thereby improving the accuracy of the test data.

[0020] The above description provides a detailed account of one embodiment of the present invention. However, this description is merely a preferred embodiment and should not be construed as limiting the scope of the present invention. All equivalent variations and improvements made within the scope of the claims of the present invention should still fall within the patent coverage of the present invention.

Claims

1. A soil sampling device for saline-alkali land remediation, comprising a sampling frame (1), a sampling rod (2) rotatably connected to the top of the sampling frame (1), a rotating handle (3) installed at the top of the sampling rod (2), and a drill bit (4) provided at the bottom of the sampling rod (2), characterized in that, The sampling rod (2) has a sampling chamber (5) at its bottom. The sampling chamber (5) has multiple sampling windows (6) on its periphery. A mudguard (7) is installed inside the bottom of the sampling rod (2). An adjustment groove (8) is provided in the middle of the sampling rod (2). An adjustment rod (9) is fixedly connected to one side of the mudguard (7). The adjustment groove (8) and the adjustment rod (9) are used to adjust the state of the mudguard (7) blocking the sampling window (6).

2. The soil sampling device for saline-alkali land treatment according to claim 1, characterized in that, The vertical surface of the sampling frame (1) is conical, and two rollers (10) are installed on both sides of the bottom of the sampling frame (1).

3. The soil sampling device for saline-alkali land treatment according to claim 1, characterized in that, The top of the sampling rod (2) is threaded to the sampling frame (1), and the sampling frame (1) has a through-hole (11) at the bottom center, the opening of the through-hole (11) being larger than the diameter of the sampling rod (2).

4. The soil sampling device for saline-alkali land treatment according to claim 1, characterized in that, The bottom of the mudguard (7) is open and its circumferential side is in contact with the inner wall of the sampling chamber (5). The sampling rod (2) is hollow above the drill bit (4). The top of the mudguard (7) is higher than the top of the adjustment groove (8).

5. A soil sampling device for saline-alkali land remediation according to claim 1, characterized in that, The width of the adjustment groove (8) is greater than the diameter of the adjustment rod (9). The adjustment groove (8) is an integral groove. One side of the adjustment groove (8) is a long vertical strip and the top is horizontal. The other side is a short vertical strip.

6. The soil sampling device for saline-alkali land treatment according to claim 1, characterized in that, The sampling window (6) is double-layered, and each layer is evenly arranged along the periphery of the sampling rod (2). A soil cutting blade (12) is provided on one side of the sampling window (6).

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