Karst area soil organic carbon sampling device

Abstract

The utility model relates to the technical field of soil sampling, in particular to a karst area soil organic carbon sampling device. When the soil sampling device is used, the material baffle is located at the position abutting against the stop block, the supporting frame abuts against the surface of to-be-sampled soil, then the push rod is manually pushed to move in the direction close to the ground, and therefore the sampling barrel is pushed to be embedded into the ground, a soil sample is squeezed into the sampling barrel from the opening of the connecting sleeve, and in the process that the soil enters the sampling barrel, the soil sample is separated from the sampling barrel. The soil can drive the material baffle to rotate, so that the material baffle cannot prevent the soil sample from entering the sampling barrel; after the sampling barrel is completely embedded into the ground, the grab rail is manually pulled backwards, so that the sampling barrel is driven to be pulled out of the soil; and if the soil sample in the sampling barrel is relatively loose, the soil sample can fall down, and the baffle plate is driven to rotate to the original position in the falling process and finally returns to the position abutting against the stop block, so that the square notch is closed, and the soil sample in the sampling barrel is prevented from continuously falling out.

Description

Technical Field

[0001] This utility model relates to the field of soil sampling technology, and in particular to a soil organic carbon sampling device for karst areas. Background Technology

[0002] Soil organic matter refers to the collective term for humus, plant and animal remains, and microorganisms formed through microbial activity. The carbon content within these substances is termed soil organic carbon. Soil organic carbon is categorized based on its microbial availability into readily decomposable organic carbon, poorly decomposable organic carbon, and inert organic carbon. Easily decomposable substances have higher bioavailability and lower loss rates, while poorly decomposable substances have higher residual rates.

[0003] When testing soil organic carbon, soil sampling is required first. Existing soil sampling devices are all cylindrical sampling structures, in which the sampling tube is embedded in the ground to allow the soil to enter the sampling tube. If the soil sample is dry, this sampling method can easily cause the soil sample to fall out of the sampling tube outlet again during the extraction process due to looseness, which is inconvenient for collection. Utility Model Content

[0004] The main purpose of this invention is to provide a soil organic carbon sampling device for karst areas, which aims to solve the problem that existing soil sampling devices are prone to causing soil samples to fall out of the sampling tube outlet due to loosening during the extraction process.

[0005] To achieve the above objectives, the technical solution proposed by this utility model is as follows:

[0006] A soil organic carbon sampling device for karst areas includes a support frame, a sampling cylinder, a push rod, and a rotating arm. The support frame includes a first support arm and a second support arm that are parallel to each other and directly opposite each other. The two ends of the rotating arm are respectively connected to the first support arm and the second support arm. A sleeve is provided in the middle of the rotating arm. The push rod slides through the sleeve. One end of the push rod is connected to a handrail. The sampling cylinder includes a cylinder body and a connecting sleeve. The other end of the push rod is connected to the cylinder body. The connecting sleeve is threaded onto the side of the cylinder body opposite to the push rod. A connecting plate is provided on the inner wall of the connecting sleeve. The connecting plate has a square notch in the middle, and the length of the diagonal of the square notch is the same as the inner diameter of the connecting sleeve; a baffle plate is hinged to each of the four inner edges of the square notch; the baffle plate is an isosceles right triangle, and the four baffle plates are the same size; four blocks are provided on the side of the connecting plate away from the cylinder body, and the blocks correspond one-to-one with the baffle plates; the blocks are used to abut against the corresponding baffle plates; when the blocks abut against the corresponding baffle plates, the baffle plates are perpendicular to the central axis of the cylinder body, and the four baffle plates close the square notch.

[0007] Preferably, a torsion spring is provided at the hinge point between the baffle plate and the inner edge of the square notch; the torsion of the torsion spring causes the baffle plate to tend to abut against the stop block.

[0008] Preferably, the four blocks are centrally symmetrical about the central axis of the cylinder body.

[0009] Preferably, the push rod and the sleeve share a common central axis; the push rod and the cylinder body share a common central axis; and the cylinder body and the connecting sleeve share a common central axis.

[0010] Preferably, the connecting plate is perpendicular to the central axis of the cylinder body; the side of the stop block facing away from the cylinder body is sharp.

[0011] Preferably, the inner wall of the connecting sleeve is provided with an internal thread; the outer wall of the cylinder body on the side opposite to the push rod is provided with an external thread that can be screwed in to engage with the internal thread.

[0012] Preferably, the support frame further includes a support base; the first support arm and the second support arm are both vertically connected to the support base; the support base has a first through hole; the sampling cylinder can pass through the first through hole.

[0013] Preferably, one end of the rotating arm is rotatably inserted through the first support arm; the other end of the rotating arm is rotatably connected to the second support arm; the rotating arm is parallel to the support base; the sleeve is disposed in the middle between the first support arm and the second support arm; the rotating arm can rotate until the sampling tube is directly opposite the first through hole; when the sampling tube is directly opposite the first through hole, the sampling tube can pass through the first through hole to be embedded in the ground.

[0014] Preferably, it further includes a locking component; the locking component includes a slide rail, a slide block, a locking rod, a spring, and a connecting seat; one end of the rotating arm extends out of the first support arm, and a handle is connected to the end of the rotating arm extending out of the first support arm; the rotating arm has a through hole; the central axis of the second through hole is perpendicular to the central axis of the handle; the slide rail is disposed on the side of the first support arm opposite to the second support arm; the slide rail is perpendicular to the support base; the slide block is slidably connected to the slide rail; the slide block is located on the side of the rotating arm closer to the support base; the connecting seat is connected to the side of the first support arm opposite to the second support arm. The second support arm is located on one side, and the connecting seat is located on the side of the slide rail closest to the support base; the locking rod is connected to the side of the slide block away from the connecting seat, and the locking rod is parallel to the slide rail; one end of the spring is connected to the connecting seat, and the other end of the spring is connected to the slide block; the spring force causes the locking rod to tend to move closer to the rotating arm; the rotating arm can rotate until the second through hole is directly opposite the locking rod; when the rotating arm rotates until the second through hole is directly opposite the locking rod, the spring force allows the locking rod to pass through the second through hole, and the sampling cylinder is directly opposite the first through hole.

[0015] Preferably, an electromagnet is provided on the side of the connecting seat facing the slide; the electromagnet is used to attract the slide; when the electromagnet attracts the slide, the locking rod and the rotating arm maintain a preset distance.

[0016] Compared with the prior art, the present invention has at least the following beneficial effects:

[0017] This invention proposes a soil organic carbon sampling device for karst areas that solves the problem of soil samples falling out of the sampling tube during extraction due to loosening. At the start of use, the baffle plate is positioned against the stop block, and the support frame is placed against the surface of the soil to be sampled. Then, the handle is manually pushed to move the push rod closer to the ground, thus pushing the sampling tube into the ground. Because the connecting sleeve is at the very front of the sampling tube, it will be the first to embed into the ground. The soil sample will be squeezed into the sampling tube from the opening of the connecting sleeve. During the process of the soil entering the sampling tube, the soil... This will cause the baffle to rotate, so that the baffle plate will not block the soil sample from entering the sampling tube. After the sampling tube is completely embedded in the ground, the soil sample has filled the inside of the sampling tube. At this time, manually pull the handle back to pull the sampling tube out of the soil. This will take away the soil sample. During the process of pulling the sampling tube out of the soil, if the soil sample in the sampling tube is relatively loose, it will fall down and drive the baffle plate to rotate back to its original position during the falling process. Finally, it will return to the position of abutting the block, thereby sealing the square gap and preventing the soil sample in the sampling tube from falling out further. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of an embodiment of the karst area soil organic carbon sampling device proposed in this utility model.

[0020] Figure 2 for Figure 1 A detailed magnified diagram showing A in one of the states;

[0021] Figure 3 for Figure 1 A detailed magnified diagram of point A in another state;

[0022] Figure 4 This is a schematic diagram of the internal structure of the connecting sleeve in an embodiment of the karst soil organic carbon sampling device proposed in this utility model.

[0023] Explanation of reference numerals in the attached figures:

[0024] 110. Support frame; 120. Support base; 130. First through hole; 140. First support arm; 150. Second support arm; 160. Rotating arm; 170. Sleeve; 180. Push rod; 190. Handrail; 210. Sampling cylinder; 220. Cylinder body; 230. Connecting sleeve; 240. Stop block; 250. Rotating handle; 260. Second through hole; 270. Slide rail; 280. Slide seat; 290. Locking rod; 310. Electromagnet; 320. Spring; 330. Connecting seat; 340. Connecting plate; 350. Material stop plate; 360. Square notch.

[0025] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0026] 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 protection scope of the present utility model.

[0027] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0028] Furthermore, in this utility model, the use of terms such as "first," "second," etc., is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0029] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0030] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0031] This invention proposes a soil organic carbon sampling device for karst areas.

[0032] As attached Figure 1 - Appendix Figure 4As shown, in one embodiment of the karst soil organic carbon sampling device proposed in this utility model, the karst soil organic carbon sampling device includes a support frame 110, a sampling cylinder 210, a push rod 180, and a rotating arm 160; the support frame 110 includes a first support arm 140 and a second support arm 150 that are parallel to each other and directly opposite each other; the two ends of the rotating arm 160 are respectively connected to the first support arm 140 and the second support arm 150; a sleeve 170 is provided in the middle of the rotating arm 160; the push rod 180 slides through the sleeve 170; one end of the push rod 180 is connected to a handrail 190; the sampling cylinder 210 includes a cylinder body 220 and a connecting sleeve 230; the other end of the push rod 180 is connected to the cylinder body 220; the connecting sleeve 230 is threaded onto the cylinder body 220 opposite to the push rod 180. On one side of the cylinder body 220, a connecting plate 340 is provided on the inner wall of the connecting sleeve 230. A square notch 360 is provided in the middle of the connecting plate 340, and the length of the diagonal of the square notch 360 is the same as the inner diameter of the connecting sleeve 230. A baffle plate 350 is hinged to each of the four inner edges of the square notch 360. The baffle plate 350 is an isosceles right triangle, and the four baffle plates 350 are the same size. Four blocks 240 are provided on the side of the connecting plate 340 away from the cylinder body 220. The blocks 240 and the baffle plates 350 correspond one to one. The blocks 240 are used to abut against the corresponding baffle plates 350. When the blocks 240 abut against the corresponding baffle plates 350, the baffle plates 350 are perpendicular to the central axis of the cylinder body 220, and the four baffle plates 350 close the square notch 360.

[0033] The karst soil organic carbon sampling device proposed in this utility model can solve the problem of soil samples falling out of the sampling cylinder 210 again due to loosening during the extraction process; at the beginning of use, the baffle plate 350 is in the position as shown in the attached... Figure 2 Position the support frame 110 against the soil surface to be sampled, then manually push the handle 190 to move the push rod 180 closer to the ground, thereby pushing the sampling cylinder 210 into the ground. Because the connecting sleeve 230 is at the front end of the sampling cylinder 210, the connecting sleeve 230 will be the first to be embedded in the ground. The soil sample will be squeezed into the sampling cylinder 210 from the opening of the connecting sleeve 230. During the process of the soil entering the sampling cylinder 210, the soil will cause the retaining material to rotate (rotate to the position shown in the attached figure). Figure 3 (As shown in the attached image), so that the baffle plate 350 will not obstruct the soil sample from entering the sampling cylinder 210; after the sampling cylinder 210 is completely embedded in the ground, the soil sample has filled the interior of the sampling cylinder 210. At this point, manually pull the handle 190 backward, thereby pulling the sampling cylinder 210 out of the soil; thus taking the soil sample with it. During the process of pulling the sampling cylinder 210 out of the soil, if the soil sample inside the sampling cylinder 210 is relatively loose, it will fall down, and in the process of falling, it will drive the baffle plate 350 to rotate back to its original position, eventually returning to the position shown in the attached image. Figure 2The position shown is used to close the square gap 360, preventing soil samples inside the sampling tube 210 from falling out further.

[0034] Furthermore, a torsion spring (not shown) is provided at the hinge point between the baffle plate 350 and the inner edge of the square notch 360; the torsion of the torsion spring causes the baffle plate 350 to tend to abut against the stop block 240. (See attached...) Figure 4 As shown, the four stops 240 are centrally symmetrically distributed about the central axis of the cylinder body 220. The push rod 180 and the sleeve 170 share a central axis; the push rod 180 and the cylinder body 220 share a central axis; the cylinder body 220 and the connecting sleeve 230 share a central axis. The connecting plate 340 is perpendicular to the central axis of the cylinder body 220; the side of the stop 240 facing away from the cylinder body 220 is pointed (to facilitate embedding into the ground for sampling). The inner wall of the connecting sleeve 230 is provided with internal threads; the outer wall of the cylinder body 220 facing away from the push rod 180 is provided with external threads that can be screwed onto the internal threads. This design allows the connecting sleeve 230 to be removed from the cylinder body 220, making it easier to collect soil samples after soil sampling is completed.

[0035] Meanwhile, the support frame 110 also includes a support base 120; the first support arm 140 and the second support arm 150 are both vertically connected to the support base 120; the support base 120 has a first through hole 130; the sampling tube 210 can pass through the first through hole 130 (the first through hole 130 is a circular hole) and be embedded in the ground.

[0036] Furthermore, one end of the rotating arm 160 is rotatably connected to the first support arm 140; the other end of the rotating arm 160 is rotatably connected to the second support arm 150; the rotating arm 160 is parallel to the support base 120; the sleeve 170 is disposed in the middle between the first support arm 140 and the second support arm 150; the rotating arm 160 can rotate until the sampling tube 210 is directly opposite the first through hole 130; when the sampling tube 210 is directly opposite the first through hole 130, the sampling tube 210 can pass through the first through hole 130 to be embedded in the ground. This configuration allows the rotating arm 160 to rotate, facilitating the rotation of the rotating arm 160 after sampling, thereby driving the sampling tube 210 to rotate, and facilitating the collection of soil samples from the sampling tube 210.

[0037] Meanwhile, the soil organic carbon sampling device in this karst area also includes a locking component; the locking component includes a slide rail 270, a slide block 280, a locking rod 290, a spring 320, and a connecting seat 330; one end of the rotating arm 160 extends out of the first support arm 140, and the end of the rotating arm 160 extending out of the first support arm 140 is connected to a handle 250; the rotating arm 160 has a through hole 260; the central axis of the second through hole 260 is perpendicular to the central axis of the handle 250; the slide rail 270 is located on the side of the first support arm 140 away from the second support arm 150; the slide rail 270 is perpendicular to the support base 120; the slide block 280 is slidably connected to the slide rail 270; the slide block 280 is located on the side of the rotating arm 160 close to the support base 120.

[0038] The connecting seat 330 is connected to the side of the first support arm 140 opposite to the second support arm 150, and the connecting seat 330 is located on the side of the slide rail 270 near the support base 120; the locking rod 290 is connected to the side of the slide block 280 opposite to the connecting seat 330, and the locking rod 290 is parallel to the slide rail 270; one end of the spring 320 is connected to the connecting seat 330, and the other end of the spring 320 is connected to the slide block 280; the elastic force of the spring 320 causes the locking rod 290 to tend to move closer to the rotating arm 160; the rotating arm 160 can rotate until the second through hole 260 is directly opposite the locking rod 290; when the rotating arm 160 rotates until the second through hole 260 is directly opposite the locking rod 290, the elastic force of the spring 320 can make the locking rod 290 cooperate to pass through the second through hole 260, and the sampling cylinder 210 is directly opposite the first through hole 130.

[0039] In addition, an electromagnet 310 is provided on the side of the connecting seat 330 facing the slide 280. A battery (not shown) for powering the electromagnet 310 and a switch (not shown) for controlling the start and stop of the electromagnet 310 are also provided on the first support arm 140. The electromagnet 310 is used to attract the slide 280. When the electromagnet 310 attracts the slide 280, the locking rod 290 and the rotating arm 160 maintain a preset distance. When the locking rod 290 passes through the second through hole 260, the outer wall of the locking rod 290 and the inner wall of the second through hole 260 slide and fit into contact.

[0040] The above technical solution can lock the angle of the rotating arm 160 to facilitate sampling. When sampling is required, the rotating arm 160 is rotated until the second through hole 260 is directly opposite the locking rod 290 (at this time, the sampling cylinder 210 is directly opposite the first through hole 130). Then, the electromagnet 310 is released, and under the action of the spring 320, the locking rod 290 is inserted into the second through hole 260, thereby locking the position of the rotating arm 160. This ensures that the push rod 180 and the sampling cylinder 210 can only be embedded into the ground in a direction perpendicular to the support base 120, making it more stable.

[0041] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A soil organic carbon sampling device for karst areas, characterized in that, The device includes a support frame, a sampling cylinder, a push rod, and a rotating arm. The support frame includes a first support arm and a second support arm that are parallel to each other and directly opposite each other. The two ends of the rotating arm are respectively connected to the first support arm and the second support arm. A sleeve is provided in the middle of the rotating arm. The push rod slides through the sleeve. One end of the push rod is connected to a handrail. The sampling cylinder includes a cylinder body and a connecting sleeve. The other end of the push rod is connected to the cylinder body. The connecting sleeve is threaded onto the side of the cylinder body opposite to the push rod. A connecting plate is provided on the inner wall of the connecting sleeve. The middle of the connecting plate... A square notch is provided, and the length of the diagonal of the square notch is the same as the inner diameter of the connecting sleeve; a baffle plate is hinged to each of the four inner edges of the square notch; the baffle plate is an isosceles right triangle, and the four baffle plates are the same size; four blocks are provided on the side of the connecting plate away from the cylinder body, and the blocks correspond one-to-one with the baffle plates; the blocks are used to abut against the corresponding baffle plates; when the blocks abut against the corresponding baffle plates, the baffle plates are perpendicular to the central axis of the cylinder body, and the four baffle plates close the square notch.

2. The soil organic carbon sampling device for karst areas according to claim 1, characterized in that, A torsion spring is provided at the hinge point between the baffle plate and the inner edge of the square notch; the torsion force of the torsion spring causes the baffle plate to tend to abut against the stop block.

3. The soil organic carbon sampling device for karst areas according to claim 1, characterized in that, The four blocks are centrally symmetrical about the central axis of the cylinder body.

4. The soil organic carbon sampling device for karst areas according to claim 1, characterized in that, The push rod and the sleeve share a common central axis; the push rod and the cylinder body share a common central axis; the cylinder body and the connecting sleeve share a common central axis.

5. A soil organic carbon sampling device for karst areas according to claim 1, characterized in that, The connecting plate is perpendicular to the central axis of the cylinder body; the side of the stop block facing away from the cylinder body is sharp.

6. The soil organic carbon sampling device for karst areas according to claim 1, characterized in that, The inner wall of the connecting sleeve is provided with an internal thread; the outer wall of the cylinder body on the side opposite to the push rod is provided with an external thread that can be screwed in to engage with the internal thread.

7. A soil organic carbon sampling device for karst areas according to claim 1, characterized in that, The support frame also includes a support base; the first support arm and the second support arm are both vertically connected to the support base; the support base has a first through hole; the sampling cylinder can pass through the first through hole.

8. A soil organic carbon sampling device for karst areas according to claim 7, characterized in that, One end of the rotating arm is rotatably inserted through the first support arm; the other end of the rotating arm is rotatably connected to the second support arm; the rotating arm is parallel to the support base; the sleeve is disposed in the middle between the first support arm and the second support arm; the rotating arm can rotate until the sampling tube is directly opposite the first through hole; when the sampling tube is directly opposite the first through hole, the sampling tube can pass through the first through hole to be embedded in the ground.

9. A soil organic carbon sampling device for karst areas according to claim 8, characterized in that, It also includes a locking component; the locking component includes a slide rail, a slide block, a locking rod, a spring, and a connecting seat; one end of the rotating arm extends out of the first support arm, and a handle is connected to the end of the rotating arm extending out of the first support arm; the rotating arm has a through hole; the central axis of the second through hole is perpendicular to the central axis of the handle; the slide rail is located on the side of the first support arm opposite to the second support arm; the slide rail is perpendicular to the support base; the slide block is slidably connected to the slide rail; the slide block is located on the side of the rotating arm closer to the support base; the connecting seat is connected to the side of the first support arm opposite to the second support arm. The two support arms are positioned on one side, and the connecting seat is located on the side of the slide rail closest to the support base; the locking rod is connected to the side of the slide block away from the connecting seat, and the locking rod is parallel to the slide rail; one end of the spring is connected to the connecting seat, and the other end of the spring is connected to the slide block; the spring force causes the locking rod to tend to move closer to the rotating arm; the rotating arm can rotate until the second through hole is directly opposite the locking rod; when the rotating arm rotates until the second through hole is directly opposite the locking rod, the spring force allows the locking rod to pass through the second through hole, and the sampling cylinder is directly opposite the first through hole.

10. A soil organic carbon sampling device for karst areas according to claim 9, characterized in that, An electromagnet is provided on the side of the connecting seat facing the slide block; the electromagnet is used to attract the slide block; when the electromagnet attracts the slide block, the locking rod and the rotating arm maintain a preset distance.

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