A deep and shallow controllable soil sampling collection tool

Abstract

This invention relates to the field of soil sampling and testing technology, specifically to a soil sampling and collection tool with controllable depth. The tool includes a sampling frame, a sampling cylinder movably mounted inside the frame, a separation disc fixed to the top of the frame, an extraction tube fixed to the bottom of the separation disc, and a sample storage box fixed to the top right side of the frame. This depth-controlled soil sampling and collection tool continuously conveys the sampled soil upwards through a spiral soil-collecting thread layer on the surface of a conical rod. A spiral scraper on the inner side of the separation disc engages with the soil-collecting thread layer, scraping the soil out and allowing it to enter the extraction tube through a discharge port. The soil is then conveyed to the sample storage box by a spiral feeding roller, significantly improving sampling efficiency. By fixing a layered plate with sieve holes in each storage area, orderly stratified collection and preliminary sieving of the sample are achieved. Furthermore, the spiral conveying method minimizes soil compression or disturbance, better preserving the original stratification information of the soil sample.

Description

Technical Field

[0001] This invention relates to the field of soil sampling and testing technology, specifically to a soil sampling and collection tool with controllable depth. Background Technology

[0002] Soil sampling is a fundamental task in soil science research, environmental monitoring, and agricultural production. By measuring the content of nutrients such as organic matter, nitrogen, phosphorus, and potassium in soil samples, the soil's fertility capacity can be determined, providing a scientific basis for precision fertilization and avoiding resource waste or environmental pollution caused by indiscriminate fertilization. Simultaneously, soil sampling can detect the content of pollutants such as heavy metals and organic matter in the soil, analyze changes in agricultural geological soil layers during long-term production, assess soil pollution status, and develop specific remediation plans.

[0003] A search revealed that Chinese Patent Publication No. CN111397954A discloses a soil sampling device for geological exploration at different depths. This device uses a threaded feed drive to allow the sampler to enter the soil at different depths, facilitating sampling at various depths. Simultaneously, as the soil sample enters the sampler, the separation effect of the partition plate causes soil samples at different depths around the sampler to enter different partition cavities, thus separating the soil samples and facilitating observation of changes in soil samples at different depths.

[0004] However, the soil sampling device used for geological exploration at different depths is prone to mixing after the soil sample enters the collector, and it is impossible to flexibly adjust the stratification according to different sampling needs. In addition, after sampling, the entire collector needs to be pulled out of the soil and the soil sample in each compartment needs to be taken out one by one, which is inconvenient for sample removal. Therefore, a soil sampling and collection tool with controllable depth is proposed. Summary of the Invention

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this invention provides a soil sampling and collection tool with controllable depth, which has the advantages of continuous sampling and automatic stratified storage of soil samples. It solves the problems of existing soil sampling devices, such as soil samples easily becoming mixed inside the collector during sampling, and the need to pull out the entire collector after sampling for samples at different depths, resulting in a cumbersome sample removal process and difficulty in achieving continuous stratified sampling.

[0007] (II) Technical Solution

[0008] To achieve the above-mentioned goals of continuous sampling and automatic stratified storage of soil samples, the present invention provides the following technical solution: a soil sampling and collection tool with controllable depth, including a sampling frame, wherein a sampling adjustment mechanism is provided on the inner side of the sampling frame;

[0009] The sampling adjustment mechanism includes a support base on the left side of the sampling frame, a lifting component on the support base, a sampling cylinder movably installed inside the sampling frame, a separation plate fixed on the top of the sampling frame, an extraction tube fixedly installed at the bottom of the separation plate, and a sample storage box fixedly installed on the top right side of the sampling frame.

[0010] Preferably, a vertical groove is provided on the inner side of the support base, and the lifting component includes a rack seat that slides on the inner side of the vertical groove. A meshing gear is movably installed on the top of the support base, and the meshing gear is meshed with one side of the rack seat.

[0011] Preferably, a drive motor is fixedly installed on the top of the support base, the output end of the drive motor is connected to a meshing gear, and a scale layer is fixed on the other side of the rack base.

[0012] Preferably, the right side of the rack seat is fixed to the outside of the sampling cylinder by a collar, and a tapered rod is rotatably connected to the inside of the sampling cylinder, with a spiral soil sampling thread layer formed on the surface of the tapered rod.

[0013] Preferably, a first drive motor is fixedly installed on the top of the sampling cylinder, and the output end of the first drive motor is connected to the top of the cone rod. A threaded scraper arranged in a ring array is fixed on the inner side of the separation disc, and the threaded scraper is fitted into the soil sampling thread layer on the surface of the cone rod.

[0014] Preferably, a discharge port is provided below the separation disc, the extraction tube includes a material taking tube body with one end connected to the discharge port, the other end of the material taking tube body is connected to the sample storage box, a spiral feeding roller is movably installed inside the material taking tube body, a second drive motor is fixedly installed at the top of the material taking tube body, and the output end of the second drive motor is connected to the top of the spiral feeding roller.

[0015] Preferably, the inner side of the sample storage box has several vertically distributed storage areas, each storage area is fixedly equipped with a layer plate, each layer plate has a sieve hole layer, and each storage area is connected to a discharge port.

[0016] (III) Beneficial Effects

[0017] Compared with the prior art, the present invention provides a soil sampling and collection tool with controllable depth, which has the following beneficial effects:

[0018] 1. This soil sampling and collection tool with controllable depth continuously conveys the sampled soil upward through the spiral soil-collecting thread layer on the surface of the cone rod. The spiral scraper on the inner side of the separation disc engages with the soil-collecting thread layer, scrapes the soil out, and enters the extraction pipe through the discharge port. Then, it is conveyed to the sample storage box by the spiral feeding roller. This realizes a one-stop continuous operation of drilling soil collection, spiral conveying, automatic separation, and classified storage, which significantly improves the sampling efficiency.

[0019] 2. This depth-controllable soil sampling and collection tool, by opening storage areas distributed vertically inside the sample storage box, and fixing a layered plate with sieve holes in each storage area, ensures that soil samples of different depths or sizes can automatically enter the corresponding storage area, realizing orderly layered collection and preliminary sieving of samples. Furthermore, the spiral conveying method causes less compression or disturbance to the soil, and can better preserve the original stratification information of the soil sample. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the soil sampling and collection tool of the present invention;

[0021] Figure 2 for Figure 1 Schematic diagram of the middle section;

[0022] Figure 3 This is a top view of the separation disk structure of the present invention;

[0023] Figure 4 for Figure 2 Cross-sectional view of the middle section of the structure.

[0024] In the diagram: 1. Sampling frame; 2. Sampling adjustment mechanism; 201. Support base; 202. Lifting component; 2021. Rack seat; 2022. Meshing gear; 2023. Scale layer; 203. Sampling cylinder; 204. Separation disc; 205. Extraction tube; 2051. Material collection tube body; 2052. Spiral feeding roller; 206. Sample storage box; 3. Drive motor; 4. First drive motor; 5. Threaded scraper; 6. Discharge port; 7. Second drive motor; 8. Layered plate; 9. Screening hole layer. Detailed Implementation

[0025] 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.

[0026] Example 1

[0027] In this embodiment, according to Figure 1 and Figure 2As shown, the sampling adjustment mechanism 2 includes a support base 201 located on the left side of the sampling frame 1, and a lifting component 202 is provided on the support base 201. Specifically, a vertical groove is formed on the inner side of the support base 201, and the lifting component 202 includes a rack seat 2021 that slides inside the vertical groove. A meshing gear 2022 is movably mounted on the top of the support base 201, meshing with one side of the rack seat 2021. A drive motor 3 is fixedly mounted on the top of the support base 201, and the output end of the drive motor 3 is connected to the meshing gear 2022. The right side of the rack seat 2021 is fixed to the outside of the sampling cylinder 203 via a collar, and a scale layer 2023 is fixed on the other side of the rack seat 2021.

[0028] The height adjustment process is as follows: When it is necessary to feed the sampling cylinder 203 downward, the drive motor 3 is started. The output end of the drive motor 3 drives the meshing gear 2022 to rotate in the forward direction. The meshing gear 2022 meshes with one side of the rack seat 2021. Under the action of gear and rack transmission, the rack seat 2021 slides downward along the vertical groove on the inner side of the support seat 201. Since the right side of the rack seat 2021 is fixedly connected to the outside of the sampling cylinder 203 through a collar, when the rack seat 2021 slides downward, it synchronously drives the sampling cylinder 203 to move downward, so that the cone rod at the bottom of the sampling cylinder 203 gradually inserts into the soil. During this process, the operator can read the sinking depth of the sampling cylinder 203 in real time through the scale layer 2023 fixed on the other side of the rack seat 2021, so as to achieve precise control of the sampling depth.

[0029] When it is necessary to lift the sampling cylinder 203 out of the soil, the drive motor 3 is started to rotate in the opposite direction. The drive motor 3 drives the meshing gear 2022 to rotate in the opposite direction. The meshing gear 2022 drives the rack seat 2021 to slide upward along the vertical groove. The rack seat 2021 drives the sampling cylinder 203 upward through the collar, so that the sampling cylinder 203 gradually exits the soil. During the entire lifting process, the operator can intuitively grasp the real-time position of the sampling cylinder 203 through the scale layer 2023.

[0030] Example 2

[0031] In this embodiment, according to Figure 1 and Figure 2 As shown, a conical rod is rotatably connected to the inner side of the sampling cylinder 203. A spiral soil sampling thread layer is formed on the surface of the conical rod. A first drive motor 4 is fixedly installed at the top of the sampling cylinder 203. The output end of the first drive motor 4 is connected to the top of the conical rod. The downward drilling soil sampling process is as follows:

[0032] When the sampling cylinder 203 descends to the bottom of the cone rod and contacts the soil surface under the drive of the rack seat 2021, the first drive motor 4 is started. The output end of the first drive motor 4 drives the cone rod to rotate at high speed around its own axis. The spiral soil sampling thread layer on the surface of the cone rod rotates accordingly. During the rotation of the cone rod, the lower edge of the spiral soil sampling thread layer first contacts and cuts into the soil. As the cone rod continues to rotate, the spiral soil sampling thread layer continuously cuts and breaks the soil below.

[0033] Meanwhile, under the continuous drive of the drive motor 3, the meshing gear 2022 continues to drive the rack seat 2021 to slide downward along the vertical groove. The sampling cylinder 203 and the rotating cone rod are smoothly fed into the depth of the soil under the guidance of the spiral soil sampling thread layer. During this process, the spiral soil sampling thread layer on the surface of the cone rod not only plays the role of drilling and soil sampling, but also continuously transports the cut soil upward along the spiral direction, so that the soil moves from bottom to top along the surface of the cone rod and is temporarily stored inside the soil sampling thread layer.

[0034] When the operator observes through the scale layer 2023 that the sampling cylinder 203 has reached the preset target depth, the first drive motor 4 and the drive motor 3 are stopped, the cone rod stops rotating, the sampling cylinder 203 stops feeding downwards, and the downward drilling and soil extraction process is completed.

[0035] Example 3

[0036] In this embodiment, according to Figure 2 and Figure 3 As shown, a separation disk 204 is fixed on the top of the sampling frame 1, and a threaded scraper 5 arranged in a ring array is fixed on the inner side of the separation disk 204. The threaded scraper 5 is properly fitted with the soil sampling thread layer on the surface of the cone rod.

[0037] The process of scraping soil samples from the separation disc is as follows:

[0038] After the sampling cylinder 203 completes the downward drilling and soil sampling process, the drive motor 3 is started to rotate in the opposite direction. The drive motor 3 drives the rack seat 2021 to slide upward along the vertical groove through the meshing gear 2022. The rack seat 2021 drives the sampling cylinder 203 to be lifted upward as a whole through the collar. During the upward movement of the sampling cylinder 203, the cone rod and the soil sampling thread layer on its surface move upward accordingly.

[0039] Since the separation disk 204 is fixedly installed on the top of the sampling frame 1, and the cone rod passes through the inner side of the separation disk 204, when the cone rod moves upward, the threaded scrapers 5 arranged in a ring array on the inner side of the separation disk 204 form a fitting relationship with the soil sampling threaded layer on the surface of the cone rod. The scraping edge of the threaded scraper 5 is embedded in the spiral groove of the soil sampling threaded layer. As the cone rod continues to rise, the threaded scraper 5 slides relative to the spiral groove of the soil sampling threaded layer, continuously scraping off the soil attached to the spiral groove of the soil sampling threaded layer.

[0040] The scraped soil falls into the discharge port 6 area below the separation disc 204 under gravity. As the cone rod continues to rise, the soil in each part of the sampling thread layer is scraped away layer by layer by the thread scraper 5 until the cone rod is completely withdrawn from the separation disc 204, completing the scraping operation of all soil. The entire scraping process is completed automatically and synchronously during the ascent of the sampling cylinder 203, requiring no additional operation.

[0041] Example 4

[0042] In this embodiment, according to Figure 2 and Figure 4 As shown, a discharge port 6 is provided below the separation disc 204. The extraction tube 205 includes a material collection tube body 2051 with one end connected to the discharge port 6, and the other end of the material collection tube body 2051 is connected to the sample storage box 206. A spiral feeding roller 2052 is movably installed inside the material collection tube body 2051, and a second drive motor 7 is fixedly installed on the top of the material collection tube body 2051. The output end of the second drive motor 7 is connected to the top end of the spiral feeding roller 2052.

[0043] The soil sample transport process is as follows:

[0044] When the threaded scraper 5 on the inner side of the separating disc 204 scrapes the soil off the soil-collecting threaded layer on the surface of the cone rod, the scraped soil falls into the discharge port 6 opened below the separating disc 204 under the action of gravity. The discharge port 6 is connected to one end of the collection pipe 2051, and the soil enters the interior of the collection pipe 2051 through the discharge port 6.

[0045] The second drive motor 7 is started, and its output drives the spiral feeding roller 2052 to rotate inside the collection tube 2051. Spiral blades are formed on the outer circumference of the spiral feeding roller 2052. During rotation, the spiral blades continuously push the soil entering the collection tube 2051 along the axial direction of the collection tube 2051. Driven by the spiral blades, the soil moves from one end of the collection tube 2051 (the end connected to the discharge port 6) to the other end (the end connected to the sample storage box 206).

[0046] As the screw feed roller 2052 continues to rotate, soil is continuously pushed to the other end of the sampling tube 2051, and then enters the sample storage box 206 through the outlet at that end. During the soil transportation process, the rotation speed of the screw feed roller 2052 can be adjusted according to the actual sampling volume to achieve stable and continuous soil transportation. The entire transportation process is a sealed process to prevent the soil from being contaminated by the outside environment during transfer.

[0047] Example 5

[0048] In this embodiment, according to Figure 4As shown, the inner side of the sample storage box 206 has several storage areas distributed vertically. Each storage area is fixedly installed with a layer plate 8, and each layer plate 8 has a sieve hole layer 9. Each storage area is connected to a discharge port.

[0049] The tiered storage process is as follows:

[0050] When the extraction tube 205 delivers soil into the sample storage box 206, the soil first enters the uppermost storage area. A layering plate 8 is fixed at the bottom of this storage area, and a sieve hole layer 9 is opened on the layering plate 8. Soil particles of different sizes or textures settle naturally under the action of gravity. Soil particles with a diameter larger than the sieve hole layer 9 are intercepted and remain in the current storage area, while soil particles with a diameter smaller than the sieve hole layer 9 pass through the sieve hole layer 9 and fall into the next storage area.

[0051] Similarly, the soil entering the second storage zone continues to be sieved by the sieve hole layer 9 of the layering plate 8, with smaller soil particles falling into the lower storage zone. Through the step-by-step sieving action of several storage zones distributed vertically and vertically, and the corresponding layering plates 8 and sieve hole layers 9, the soil samples are distributed from top to bottom according to particle size. The upper storage zone collects larger soil particles, and the lower storage zone collects smaller soil particles.

[0052] Meanwhile, since soil at different depths has differences in texture and particle composition, soil samples obtained from different sampling depths are screened step by step after entering the sample storage box 206. The soil samples collected in each storage area can truly reflect the particle size distribution characteristics of soil layers at different depths. Each storage area is connected to a discharge port, and operators can take out soil samples from the corresponding layer from the discharge port of each layer for analysis according to the testing needs.

[0053] Throughout the transportation and storage process, the soil was not subjected to strong compression or impact, and the transportation path was well-sealed, which not only prevented damage to the stratification information of the soil samples but also prevented the introduction of external impurities, ensuring the representativeness of the samples and the accuracy of the tests. When it is necessary to clean or replace the sample storage box 206, the soil samples can be completely discharged by opening the discharge ports of each layer.

[0054] In summary, this depth-controlled soil sampling fixture continuously conveys the sampled soil upwards through the spiral soil-collecting thread layer on the surface of the cone rod. The spiral scraper on the inner side of the separation disc engages with the soil-collecting thread layer, scraping the soil out and allowing it to enter the extraction tube through the discharge port. It is then conveyed to the sample storage box by the spiral feeding roller, realizing a one-stop continuous operation of drilling soil collection, spiral conveying, automatic separation, and classified storage, significantly improving sampling efficiency. By opening vertically distributed storage areas inside the sample storage box, and fixing a layered plate with sieve holes in each storage area, it is ensured that soil samples of different depths or sizes can automatically enter the corresponding storage area, achieving orderly stratified collection and preliminary sieving of samples. Furthermore, the spiral conveying method causes less compression or disturbance to the soil, better preserving the original stratification information of the soil samples.

[0055] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0056] 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 soil sampling and collection tool with controllable depth, comprising a sampling frame (1), characterized in that: The sampling adjustment mechanism (2) is provided on the inner side of the sampling rack (1); The sampling adjustment mechanism (2) includes a support base (201) on the left side of the sampling frame (1), a lifting component (202) on the support base (201), a sampling tube (203) movably installed on the inner side of the sampling frame (1), a separation plate (204) fixed on the top of the sampling frame (1), an extraction tube (205) fixedly installed on the bottom of the separation plate (204), and a sample storage box (206) fixedly installed on the top right side of the sampling frame (1).

2. The soil sampling and collection apparatus with controllable depth according to claim 1, characterized in that: A vertical groove is provided on the inner side of the support base (201). The lifting member (202) includes a rack seat (2021) that slides on the inner side of the vertical groove. A meshing gear (2022) is movably installed on the top of the support base (201) to mesh with one side of the rack seat (2021).

3. The soil sampling and collection apparatus with controllable depth according to claim 2, characterized in that: A drive motor (3) is fixedly installed on the top of the support (201), and the output end of the drive motor (3) is connected to the meshing gear (2022). A scale layer (2023) is fixed on the other side of the rack seat (2021).

4. The soil sampling and collection tool with controllable depth according to claim 1, characterized in that: The right side of the rack seat (2021) is fixed to the outside of the sampling cylinder (203) by a collar. A cone rod is rotatably connected to the inside of the sampling cylinder (203), and a spiral soil sampling thread layer is formed on the surface of the cone rod.

5. The soil sampling and collection apparatus with controllable depth according to claim 4, characterized in that: A first drive motor (4) is fixedly installed on the top of the sampling cylinder (203), and the output end of the first drive motor (4) is connected to the top of the cone rod. A threaded scraper (5) arranged in a ring array is fixed on the inner side of the separation disc (204), and the threaded scraper (5) is fitted with the soil sampling thread layer on the surface of the cone rod.

6. The soil sampling and collection apparatus with controllable depth according to claim 1, characterized in that: A discharge port (6) is provided below the separation plate (204). The extraction tube (205) includes a material taking tube body (2051) with one end connected to the discharge port (6). The other end of the material taking tube body (2051) is connected to the sample storage box (206). A spiral feeding roller (2052) is movably installed inside the material taking tube body (2051). A second drive motor (7) is fixedly installed on the top of the material taking tube body (2051). The output end of the second drive motor (7) is connected to the top of the spiral feeding roller (2052).

7. The soil sampling and collection apparatus with controllable depth according to claim 1, characterized in that: The inner side of the sample storage box (206) is provided with several storage areas distributed vertically. Each storage area is fixedly installed with a layer plate (8). Each layer plate (8) is provided with a sieve hole layer (9). Each storage area is connected to a discharge port.

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