A soil sampling device for shallow soil layers

Abstract

This invention discloses a soil sampling device for shallow soil layers, belonging to the technical field of soil collection equipment. By setting up separate collection and sampling structures, the device can reach any depth of the soil layer within the length of the sampling tube for sampling through the movement of the sampling tube. It is highly flexible, and the sampling tube is detachable, allowing for multiple depth samplings. The wrapping of the first and second plates ensures that the soil layer is fully compressed and retained inside the tube. Furthermore, the constant blocking by the first and second plates ensures that the soil is protected from light, preventing the influence of light on the inner soil layer and thus avoiding sampling failure. This device has a simple sampling method, is easy to operate, and is suitable for collecting samples from most wet soils.

Description

Technical Field

[0001] This invention belongs to the technical field of soil sampling equipment, specifically relating to a soil sampling device for shallow soil layers. Background Technology

[0002] Soil testing is a commonly used experimental method in geology, agriculture, and microbiology. Soil testing requires diverse and multi-equipment testing in the laboratory to obtain the desired conclusions. Therefore, soil testing requires on-site collection, sampling, and preservation.

[0003] Existing soil sampling equipment directly uses an insertion sampling head to sample soil at different depths, then retrieves and stores it in a storage device. While the insertion depth can be controlled during the insertion process, it is difficult to control whether the soil collected into the sampling head is mixed with soil from other depths. Furthermore, the soil is transferred and stored outside the soil, making it susceptible to the effects of air and light. All of these factors contribute to the instability of soil sampling. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a soil sampling device for shallow soil layers, which can accurately sample soil at different depths in a closed environment, and transfer and preserve the samples.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] The present invention includes a tube and a sampler. A vertical groove is formed along the extension direction of the tube. A first plate is slidably mounted on the vertical groove, and the first plate is located at the position of the vertical groove, so that the tube forms a complete cylindrical structure. The sampler includes a second plate that cooperates with the vertical groove. The second plate has a protrusion with a through hole. A sampling tube is provided at the through hole. The inner side of the end of the sampling tube is threaded to the protrusion. A spiral shaft is coaxially rotatable inside the sampling tube. The second plate abuts against the first plate along the vertical groove and slides, so that the sampling tube moves along the tube to the position of the desired soil layer for sampling.

[0007] Furthermore, a sleeve is fixedly provided at the end of the first strip plate. The side wall of one end of the sleeve is sharpened, and an annular groove is opened at the other end to cooperate with the lower end of the insert. When the first strip plate is completely located in the vertical groove, the insert is embedded in the annular groove. When the insert is inserted into the soil layer, the sharpened side wall of the sleeve faces the soil layer.

[0008] Furthermore, the outer end of the sampling tube is provided with a bottom stop, and a through hole is provided on the bottom stop. It also includes a rotating shaft that cooperates with the through hole. The rotating shaft passes through the through hole and is threadedly connected to the spiral shaft. A screw cap is also fixed to the outer end of the rotating shaft. When the spiral shaft is inserted into the soil inside the tube and abuts against the inner side of the tube, the screw cap contacts the outer end of the sampling tube.

[0009] Furthermore, it also includes a cap, which has an external thread that mates with the inner thread of the sampling cylinder. The cap also has a threaded hole in the middle of its inner side that mates with the end of the rotating shaft. The cap has a rubber ring on its side facing the sampling cylinder. When the cap is tightened so that the rotating shaft is threadedly connected to the cap, the rubber ring is pressed between the cap and the bottom stop.

[0010] Furthermore, a crossbar for assisting in applying force is laterally fixed to the upper side of the insert.

[0011] The beneficial effects of this invention are as follows:

[0012] This invention is used for collecting and sampling soil from shallow soil layers. First, a first plate is inserted into a tube, forming a complete cylindrical structure. The tube is then vertically inserted into the soil layer, where the soil is divided and compressed, remaining within the tube, thus completing the collection. The tube is then removed. A second plate is placed against the first plate along a vertical groove. The second plate is slid, moving the sampling tube along the tube to the desired soil layer. A auger is then screwed into the soil layer inside the tube, with its end resting against the side wall of the tube. The auger continues to rotate until it stops advancing and remains in place, moving the soil layer into the sampling tube. The sampling tube is then removed from the second plate. This equipment completes soil sampling at this depth. Through separate collection and sampling structures, the sampling tube can be moved to reach any depth within the tube's length for sampling, offering high flexibility. The sampling tube is detachable, allowing for multiple depth samplings. The first and second plates ensure the soil layer is fully compressed and contained within the tube. Furthermore, the constant shielding by the first and second plates prevents light from affecting the inner soil layers and causing sampling failure. This equipment features a simple sampling method, convenient operation, and is suitable for collecting samples from most wet soils.

[0013] Other advantages, objectives, and features of the invention will be set forth in the following description and will be apparent to those skilled in the art in some respects, or may be learned by practice of the invention. The objectives and other advantages of the invention can be realized and obtained through the following description. Attached Figure Description

[0014] To make the objectives, technical solutions, and beneficial effects of this invention clearer, the following figures are provided for illustration:

[0015] Figure 1 This is a schematic diagram of the overall soil sampling equipment according to an embodiment of the present invention;

[0016] Figure 2 This is a schematic diagram of the vertical groove structure according to an embodiment of the present invention;

[0017] Figure 3 This is a schematic diagram of the second plate being inserted into the vertical slot according to an embodiment of the present invention;

[0018] Figure 4 This is a schematic diagram of the working of the helical shaft according to an embodiment of the present invention;

[0019] Figure 5 This is a schematic diagram of the sleeve structure according to an embodiment of the present invention;

[0020] Figure 6 This is a schematic diagram of the spiral shaft structure according to an embodiment of the present invention;

[0021] Figure 7 This is a schematic diagram of the sampling cylinder structure according to an embodiment of the present invention;

[0022] The following labels are used in the attached diagram: 1. Insert sleeve; 11. Vertical groove; 12. First plate; 13. Sleeve; 131. Annular groove; 14. Crossbar; 2. Sampler; 21. Second plate; 211. Protrusion; 22. Sampling cylinder; 221. Bottom stop; 2211. Perforation; 23. Spiral shaft; 24. Rotating shaft; 25. Screw cap; 26. Sealing cap; 261. Threaded hole; 27. Rubber ring. Detailed Implementation

[0023] like Figures 1-7 As shown, this invention discloses a soil sampling device for shallow soil layers, including a tube 1 and a sampler 2. The tube 1 is a cylindrical iron pipe with equal inner and outer diameters, and a vertical groove 11 is formed along the extending direction of the tube 1, such as... Figure 2 As shown, slide rails are provided on both sides of the vertical groove 11, and a first plate 12 is slidably provided on the vertical groove 11. The first plate 12 has a corresponding sliding groove, which slides along the slide rail. The first plate 12 is located in the vertical groove 11, so that the insert 1 forms a complete cylindrical structure, as shown in the diagram. Figure 1 The sampler 2 includes a second plate 21 that mates with the vertical groove 11. The second plate 21 also has a sliding groove, allowing it to slide along the vertical groove 11 and block it. (See reference...) Figure 3 and Figure 4 The second plate 21 has a cylindrical protrusion 211 on one side facing upwards. The protrusion 211 has a through hole penetrating the second plate 21, and a sampling cylinder 22 is provided at the through hole. The inner side of the end of the sampling cylinder 22 is threaded to the protrusion 211. A spiral shaft 23 is coaxially rotatable inside the sampling cylinder 22. The spiral shaft 23 has the following structure: Figure 6As shown, the second plate 21 abuts against the first plate 12 along the vertical groove 11 and slides, so that the sampling tube 22 moves along the insertion tube 1 to the desired soil layer position.

[0024] This sampling device is used for collecting and sampling soil from shallow soil layers. First, the first plate 12 is inserted into the insert 1, forming a complete cylindrical structure. The insert 1 is then vertically inserted into the soil layer, where the soil is divided and compressed, remaining within the insert 1, thus completing the collection. The insert 1 is then removed, and the second plate 21 is placed against the first plate 12 along the vertical groove 11. The second plate 21 is slid, moving the sampling tube 22 along the insert 1 to the desired soil layer. The spiral shaft 23 is then screwed into the soil layer within the insert 1, with its end resting against the side wall of the insert 1. The spiral shaft 23 continues to rotate until it stops advancing and rotates in place, moving the soil layer into the sampling tube 22. Remove plate 22 from the second plate 21 to complete soil sampling at this depth. This sampling device, by setting up separate collection and sampling structures, can reach any depth of soil layer along the length of the sampling tube 1 by moving the sampling tube 22. It is highly flexible, and the sampling tube 22 is detachable, allowing for multiple depths of sampling. The wrapping of the first plate 12 and the second plate 21 ensures that the soil layer is fully compressed and retained in the tube 1. The constant blocking by the first plate 12 and the second plate 21 also ensures that the soil is protected from light, avoiding the influence of light on the inner soil layer and preventing sampling failure. The sampling method of this device is simple and easy to operate, and it is suitable for the collection of most wet soils.

[0025] In a further embodiment, a sleeve 13 is fixedly provided at the end of the first strip 12, such as... Figure 1 and Figure 5 As shown, the side wall of one end of the sleeve 13 is sharpened, and the other end is provided with an annular groove 131 that mates with the lower end of the insert 1. When the first strip 12 is completely located in the vertical groove 11, the insert 1 is embedded in the annular groove 131. When the insert 1 is inserted into the soil layer, the sharpened side wall of the sleeve 13 faces the soil layer.

[0026] This device is equipped with a sleeve 13, which is fixedly connected to the first plate 12. The first plate 12 is inserted into the insert 1. When the insert 1 is inserted downward into the soil layer, the sleeve 13 always abuts against the end of the insert 1. Through the limiting of the annular groove 131, there will be no misalignment or falling. The sleeve 13 with the side wall sharpened can assist the insert 1 in the soil layer insertion, making it more labor-saving.

[0027] In further proposals, such as Figure 4 As shown, the outer end of the sampling cylinder 22 is provided with a bottom stop 221, and the bottom stop 221 is provided with a through hole 2211. It also includes a rotating shaft 24 that mates with the through hole 2211. (See reference...) Figure 6The rotating shaft 24 passes through the through hole 2211 and is threadedly connected to the spiral shaft 23. A screw cap 25 is also fixed to the outer end of the rotating shaft 24. When the spiral shaft 23 is inserted into the soil in the insertion tube 1 and abuts against the inner side of the insertion tube 1, the screw cap 25 contacts the outer end of the sampling tube 22.

[0028] This structure seals one end of the sampling cylinder 22 with a bottom stop 221. The cap 25 and the rotating shaft 24 are used to connect the spiral shaft 23. By manually rotating and pushing the cap 25, the cylinder spiral can be screwed in and the soil can be taken out. After sampling is completed, the sampling cylinder 22 and the spiral shaft 23 can be removed to complete the sampling.

[0029] In further proposals, such as Figure 4 and Figure 7 As shown, it also includes a cover 26, which has an external thread that engages with the inner thread of the sampling cylinder 22. The inner center of the cover 26 also has a threaded hole 261 that engages with the end of the rotating shaft 24. The screw cap 25 has a rubber ring 27 on its side facing the sampling cylinder 22. When the screw cap 25 is tightened so that the rotating shaft 24 is threadedly connected to the cover 26, the rubber ring 27 is pressed between the screw cap 25 and the bottom stop 221.

[0030] By setting this structure, when the sampling tube 22 is removed for sampling and storage, the screw cap 25 can be tightened to seal the threaded end of the sampling tube 22. The threaded hole 261 on the screw cap 25 can further connect to the rotating shaft 24. The rotating shaft 24 pulls the screw cap 25 to press against the rubber ring 27 between it and the bottom stop 221. By setting this structure, the sampling soil can be sealed and protected from light in the sampling tube 22, thus ensuring the preservation of the soil.

[0031] In a further embodiment, a crossbar 14 for assisting in applying force is laterally fixed to the upper side of the insert 1. When inserting the insert 1, it can assist in applying force. The crossbar 14 can be set by threaded connection or hinge, which can also ensure the portability of this device.

[0032] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of the present invention.

Claims

1. A soil sampling apparatus for shallow soil layers characterised in that: The device includes a tube (1) and a sampler (2). A vertical groove (11) is provided along the extension direction of the tube (1). A first plate (12) is slidably provided on the vertical groove (11). The first plate (12) is located at the position of the vertical groove (11), so that the tube (1) forms a complete cylindrical structure. The sampler (2) includes a second plate (21) that cooperates with the vertical groove (11). A protrusion (211) is provided on the second plate (21). The protrusion (211) has a through hole. A sampling tube (22) is provided at the through hole. The end of the sampling tube (22) is... The inner side is threaded to the protrusion (211). A spiral shaft (23) is coaxially rotatable inside the sampling tube (22). The second plate (21) abuts against the first plate (12) along the vertical groove (11) and slides, so that the sampling tube (22) moves along the insertion tube (1) to the desired soil layer position. A sleeve (13) is fixedly provided at the end of the first plate (12). The side wall of one end of the sleeve (13) is sharpened, and the other end is opened with an annular groove (131) that matches the lower end of the insertion tube (1). When the first plate (12) is completely located in the vertical groove (11), the insertion tube (1) When the insert (1) is inserted into the soil layer, the sharpened sidewall of the sleeve (13) faces the soil layer; the outer end of the sampling tube (22) is provided with a bottom stop (221), and a through hole (2211) is opened on the bottom stop (221). It also includes a rotating shaft (24) that cooperates with the through hole (2211). The rotating shaft (24) passes through the through hole (2211) and is threadedly connected to the spiral shaft (23). A screw cap (25) is also fixed to the outer end of the rotating shaft (24). The spiral shaft (23) is inserted into the soil inside the insert (1) and abuts against the insert. (1) When inside, the cap (25) contacts the outer end of the sampling cylinder (22); it also includes a cover (26), the cover (26) is provided with an external thread that engages with the inner thread of the sampling cylinder (22), the middle of the inner side of the cover (26) is also provided with a threaded hole (261) that engages with the end of the rotating shaft (24), the side of the cap (25) facing the sampling cylinder (22) is provided with a rubber ring (27), when the cap (25) is tightened so that the rotating shaft (24) is threadedly connected to the cover (26), the rubber ring (27) is pressed between the cap (25) and the bottom stop (221).

2. The soil sampling device for shallow soil layers according to claim 1, characterized in that: A horizontal bar (14) for assisting in applying force is fixedly connected to the upper side of the insert (1).

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