Soil sample sampler

Abstract

A soil sample sampler comprises a sampling cabin body, one end of the sampling cabin body is a sampling end, the other end of the sampling cabin body is provided with a sampling push plate, and the sampling push plate is movably arranged in the sampling cabin body and used for pushing a taken soil sample out of the sampling cabin body; the sample cabin is provided with a plurality of accommodating chambers for accommodating soil samples, the sampling cabin body can be inserted into the accommodating chambers, and the soil samples are pushed into the accommodating chambers through the sampling push plate. The undisturbed soil sampling device can be used for collecting undisturbed soil of a soil layer, contact between workers and the soil is avoided in the sampling process, and damage to a soil sample in the sampling process is reduced. The device is provided with the sample cabin, the sampling cabin body can be directly transferred into the sample cabin after sampling, soil structure damage caused by soil sample transfer is avoided, in addition, the sample cabin can simulate an underground pressure environment and a humid environment, and the soil sample can keep the original shape to the maximum extent.

Description

Technical Field

[0001] The invention belongs to the technical field related to soil sampling devices, and more specifically, particularly relates to a soil specimen sampler. Background Art

[0002] The preparation and preservation of soil box specimens are of great significance to soil science research. They are the basic basis for studying soil profile morphology and soil occurrence classification. Through soil box specimens, researchers can intuitively observe the soil's hierarchical structure, color, texture and other characteristics, thereby analyzing the soil's formation process, fertility status and improvement measures. In addition, soil box specimens are also an important teaching resource for soil science education. In higher education, by making and displaying soil box specimens, students can better understand the principles and applications of soil science and improve their practical training capabilities. To this end, it is very necessary to ensure the original appearance and structure of the soil during the collection and preparation of soil box specimens.

[0003] The current practice of collecting soil box specimens is as follows: (1) Dig a profile in the field and divide the occurrence layer. In this technology, a cutter is used to remove the original soil in each occurrence layer and put it into a soil box; (2) When collecting original soil samples, the collected samples are not representative because the collected samples are relatively small and the properties of soils of different textures are different; (3) During transportation, the collected samples do not fit the size of the soil box, which will cause the soil samples in the soil box to scatter or be mixed with adjacent soil samples. Summary of the invention

[0004] 1. Technical issues

[0005] In summary, how to provide an in-situ non-destructive sampler that is easy to operate, has high universality, can collect soil box samples, and has little soil disturbance has become a problem that needs to be solved urgently by technical personnel in this field.

[0006] (II) Technical solution

[0007] The present invention provides a soil sampler. In the present invention, the soil sampler comprises:

[0008] A sampling cabin, wherein the sampling cabin is a straight cylindrical structure, one end of the sampling cabin is a sampling end, and the other end of the sampling cabin is provided with a sampling push plate, the sampling push plate is movably arranged in the sampling cabin and is used to push the taken soil sample out of the sampling cabin;

[0009] The sample cabin has a plurality of receiving chambers for receiving soil samples. The sampling cabin body can be inserted into the receiving chambers and the soil samples can be pushed into the receiving chambers through the sampling pushing plate.

[0010] Preferably, in the soil specimen sampler provided by the present invention, a blade structure is provided on the opening edge of the sampling chamber at the sampling end thereof.

[0011] Preferably, in the soil specimen sampler provided by the present invention, the sampling push plate is a transparent hard plate, and the sampling push plate is detachably fixed to the entrance of the containing chamber.

[0012] Preferably, the soil specimen sampler provided by the present invention also includes a pushing component for stably pushing the sampling push plate, and the pushing component can be abutted against the sampling push plate to push the sampling push plate toward the sampling end; the outer side surface of the pushing component is slidably matched with the inner side surface of the sampling chamber.

[0013] Preferably, in the soil specimen sampler provided by the present invention, a pressure assembly is arranged in the receiving chamber, and the pressure assembly includes an expandable unit and a pressure plate arranged on the expandable unit; it also includes a power station connected to the expandable unit for controlling the expansion or contraction of the expandable unit; the expandable unit is arranged on the inner side surface of the receiving chamber, and the pressure plate can move in a direction perpendicular to the inner surface of the receiving chamber corresponding thereto.

[0014] Preferably, in the soil specimen sampler provided by the present invention, the holding chamber is a horizontally arranged rectangular cavity structure, in the depth direction of the holding chamber, one end of the holding chamber is the entrance of the holding chamber, and the other end of the holding chamber is the inner end surface, and the holding chamber also includes two horizontal side surfaces and a top surface; the two horizontal side surfaces, the inner end surface and the top surface of the holding chamber are all provided with the pressure assembly.

[0015] Preferably, in the soil specimen sampler provided by the present invention, the pressure components are provided in plurality, and at least two pressure components are provided on the same inner side surface of the containing chamber; among the plurality of pressure components provided on the same inner side surface of the containing chamber, the pressure plates in two adjacent pressure components have their sides of vertical projection connected.

[0016] Preferably, in the soil specimen sampler provided by the present invention, the sampling push plate can be airtightly arranged on the entrance of the containing chamber; and a locking component for locking the sampling push plate is arranged on the outside of the containing chamber.

[0017] Preferably, in the soil specimen sampler provided by the present invention, a mounting groove structure is provided on the side wall of the sampling chamber close to its sampling end, and a first humidity sensor for obtaining soil moisture and a first pressure sensor for obtaining soil pressure around the sampling chamber are provided in the mounting groove structure; a display screen for displaying data is connected to the first humidity sensor and the first pressure sensor.

[0018] Preferably, in the soil specimen sampler provided by the present invention, the sample cabin is provided with air holes; an outer shell is provided on the outer side of the sample cabin, the outer shell and the sample cabin are spaced apart, a water storage component is provided between the sample cabin and the outer shell, and a second humidity sensor is connected to the water storage component; among the multiple pressure components provided on the same inner side surface of the containing chamber, at least one of the pressure components is provided with a second pressure sensor for obtaining the pressure of the pressure plate; a water mist inlet is provided on the outer shell, a valve is provided on the water mist inlet, and a water mist spray system is externally connected through the valve.

[0019] (III) Beneficial effects

[0020] As can be seen from the above, the present invention provides a soil sampler, which includes: a sampling cabin, the sampling cabin is a straight cylindrical structure, one end of the sampling cabin is a sampling end, and the other end of the sampling cabin is provided with a sampling push plate, which can be movably arranged in the sampling cabin and used to push the soil sample taken out of the sampling cabin; a sample cabin, the sample cabin has a plurality of holding chambers for holding soil samples, the sampling cabin can be inserted into the holding chamber and the soil sample can be pushed into the holding chamber by the sampling push plate. In the present invention, a sampling cabin is provided, and through the structural design of the sampling cabin, compared with the existing whole-section specimen sampler, the present invention has fewer tools attached to the sampling cabin, and the sampling is convenient and accurate. The present invention adopts the sampling cabin to directly transfer the samples to the sample cabin for storage after sampling, thereby avoiding damage to the samples obtained by the sampling cabin. The present invention can collect the original soil of the soil layer, avoid the contact of the staff with the soil during the sampling process, and reduce the damage to the soil sample during the sampling process. The present invention is provided with a sample cabin. After sampling using the sampling cabin, the samples can be directly transferred to the sample cabin to avoid damage to the soil structure caused by the transfer of soil samples. In addition, the sample cabin can simulate the underground pressure environment and the wet environment, so that the soil sample can maintain its original shape to the greatest extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic structural diagram of a sampling cabin of a soil sampler in one embodiment of the present invention;

[0022] Figure 2 A schematic structural diagram of a sample chamber of a soil sampler in one embodiment of the present invention;

[0023] Figure 3 The present invention is a simplified schematic diagram of the cross-sectional structure of a sample chamber of a soil sampler in one embodiment of the present invention.

[0024] exist Figures 1 to 3 In the figure, the corresponding relationship between the component names and the reference numerals is as follows:

[0025] Sampling chamber 1, sampling push plate 2, sample chamber 3, containing chamber 4, pushing component 5,

[0026] The expandable unit 6 , the pressure plate 7 , the locking assembly 8 , the outer shell 9 , and the second humidity sensor 10 . DETAILED DESCRIPTION

[0027] In order to make the objectives, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0028] In addition, in the description of the present invention, the terms "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and do not require that the present invention must be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention. The terms "connected" and "connected" used in the present invention should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection; it can be directly connected or indirectly connected through an intermediate component. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0029] Please refer to Figures 1 to 3 ,in, Figure 1 A schematic structural diagram of a sampling cabin of a soil sampler in one embodiment of the present invention; Figure 2 A schematic structural diagram of a sample chamber of a soil sampler in one embodiment of the present invention; Figure 3 The present invention is a simplified schematic diagram of the cross-sectional structure of a sample chamber of a soil sampler in one embodiment of the present invention.

[0030] The present invention provides a soil sample sampler, which is used for obtaining soil samples (obtaining samples of a certain shape and a certain volume from the soil), and can preserve the soil samples and provide a preservation environment close to the original soil environment.

[0031] In the present invention, the soil specimen sampler includes a sampling capsule 1 and a sample capsule 3. The sampling capsule 1 is used to obtain soil samples from the soil, and the sample capsule 3 can cooperate with the sampling capsule 1. The sampling capsule 1 can directly push the obtained soil samples into the sample capsule 3 for storage. This transfer and storage method of directly pushing the soil samples into the sample capsule 3 can minimize the probability of soil samples being damaged in the soil structure due to transfer.

[0032] In the present invention, the sampling capsule 1 obtains soil samples by directly inserting them into the soil to obtain samples. Preferably, the sampling capsule 1 is horizontally inserted into the vertical section of the soil pit. In order to obtain the complete same-layer soil, the present invention designs the sampling capsule 1 as a straight-cylindrical structure, that is, the cavity structure of the sampling capsule 1 used to provide a storage space for the obtained soil sample when inserted into the soil is a long straight-cylindrical structure. Preferably, the sampling capsule 1 is a rectangular straight-cylindrical structure, that is, the cavity structure of the sampling capsule 1 is rectangular (rectangular or square). The sampling capsule 1 needs to be inserted into the soil for sampling. In order to facilitate the structural description, the present invention defines the end of the sampling capsule 1 used for inserting into the soil for sampling as the sampling end, and the other end of the sampling capsule 1 is usually located outside the soil (always located outside the soil during the sampling process). A sampling push plate 2 is provided at the other end of the sampling capsule 1. The sampling push plate 2 can be movably arranged in the sampling capsule 1 and is used to push the extracted soil sample out of the sampling capsule 1.

[0033] As for the sampling capsule 1, in a specific embodiment of the present invention, it is made of stainless steel plate, and the overall structure of the sampling capsule 1 is a rectangular cylindrical structure, that is, the sampling capsule 1 is welded by four rectangular plates, or is made by bending (butt welding) a rectangular plate. The sampling capsule 1 is provided with a blade structure at the opening edge of its sampling end, that is, the edge of the port (opening edge) of the sampling end of the sampling capsule 1 is sharpened, and the purpose of setting this structure is to improve the sharpness of the edge of the sampling end, so that the sampling capsule 1 can be inserted into the soil more easily. Of course, if there are foreign objects in the soil (such as tree roots, grass roots, etc.), they can also be cut off by the blade structure, so that the complete soil sample is taken out of the soil.

[0034] Before obtaining soil samples, a pit is usually dug. After the pit is dug to a certain depth (generally 1.5m to 2m), at least one vertical section is retained (for obtaining soil samples). Then the sampling capsule 1 is inserted horizontally into the vertical section to a certain depth. Finally, the sampling capsule 1 (with the obtained soil sample) is taken out and the soil sample is transferred. Based on the above operations, the present invention performs the following structural optimizations on the sampling capsule 1: 1. The overall length of the sampling capsule 1 is lengthened. Generally, the overall length of the sampling capsule 1 is twice the depth of its insertion into the soil, that is, the front half of the sampling capsule 1 is inserted into the soil, and the rear half is located outside the soil, which is convenient for the arrangement of other structures; 2. A handle is provided at a position near the other end of the sampling capsule 1 to facilitate the holding of the sampling capsule 1; 3. A level device capable of measuring the horizontality is provided on the outer side surface of the sampling capsule 1 near the other end thereof (the simplest method is to provide a water bottle with bubbles and confirm the horizontality by observing the bubbles); 4. A limit plate is provided on the outer side surface of the sampling capsule 1 to limit the insertion depth of the sampling capsule 1 so that the volume of each soil sample obtained by the sampling capsule 1 remains consistent.

[0035] The present invention sets a sampling push plate 2 in the sampling chamber 1. The sampling push plate 2 is a transparent hard plate. The sampling push plate 2 is detachably fixed to the entrance of the containing chamber 4. In the present invention, the sampling push plate 2 is made of a transparent acrylic plate. The thickness of the sampling push plate 2 is between 3mm and 5mm, which can make it have high transparency and a certain pressure bearing capacity. The contour shape of the sampling push plate 2 is set according to the cavity structure of the sampling chamber 1. When the sampling push plate 2 is installed in the sampling chamber 1, the sampling push plate 2 is kept in a vertical state (the sampling chamber 1 is kept in a horizontal state), and the outer edge of the sampling push plate 2 is in a completely contact state with the inner side of the sampling chamber 1. At the same time, the sampling push plate 2 can also slide in the sampling chamber 1. In order to control the sampling push plate 2 to slide smoothly in the sampling chamber 1, the present invention also provides a pushing component 5 for stably pushing the sampling push plate 2. The pushing component 5 can be abutted against the sampling push plate 2 to push the sampling push plate 2 toward the sampling end; the outer side of the pushing component 5 is slidably matched with the inner side of the sampling chamber 1. Specifically, the pushing component 5 includes a pushing block, which is a hard material block with a certain thickness (it can be a metal block or a hard plastic block). The front side of the pushing block can be abutted against the rear side of the sampling push plate 2 (the front side of the sampling push plate 2 is in contact with the soil sample), and a pushing handle and other structures are provided on the rear side of the pushing block. After the pushing block and the sampling push plate 2 are abutted, the two structures as a whole have a certain thickness, so that the sampling push plate 2 can be kept in a vertical state and move in the sampling chamber 1. The length of the push handle can be appropriately lengthened, but the length of the push wrench should not be less than half the length of the sampling chamber 1. Preferably, the length of the push wrench is 1.2 to 1.5 times the length of the sampling chamber 1. When the sampling chamber 1 is forced into the soil, the operator can apply a certain pressure to the push wrench by hand, so that the soil sample is compressed to maintain the original state of the soil (no loosening).

[0036] As for the sample cabin 3, the sample cabin 3 is a device for storing soil in the present invention, which is equivalent to a paper box in the prior art. In the prior art, storing soil samples in paper boxes will cause problems such as loose soil samples and dry soil, which greatly changes the properties of the soil samples from those when they were unearthed, affecting the research on the soil samples. The sample cabin 3 provided by the present invention can directly store the soil samples after the sampling cabin 1 takes out the soil samples, and then simulate the underground pressure and maintain the soil, so that the soil samples can maintain their properties when they were unearthed to the greatest extent within a certain period of time after being unearthed (including the properties of the soil samples, soil layers, soil moisture, looseness of the soil, etc.).

[0037] In the present invention, the sample cabin 3 is made of transparent acrylic material, and its overall structure is a rectangular parallelepiped, and a plurality of holding chambers 4 are arranged on the front (that is, a window communicating with the holding chamber 4 is arranged on the front, so it can be considered that the holding chamber 4 extends from the front of the sample cabin 3 to the inside of the sample cabin 3). The sample cabin 3 has a plurality of holding chambers 4 for holding soil samples, and the holding chambers 4 are arranged from top to bottom on the sample cabin 3, so that soils of different heights can be loaded into different holding chambers 4 in order for easy observation. In the present invention, the sample cabin 3 is an integrated structure, and its wall thickness is generally 2mm-4mm. Under the premise of not affecting the observation of the soil sample, a reinforcing rib or other structure can be set on the sample cabin 3 to ensure the structural strength of the sample cabin 3 while thinning the sample cabin 3. The size of the receiving chamber 4 is designed according to the sampling capsule 1, and the contour shape of the receiving chamber 4 is consistent with the sampling capsule 1, so that the sampling capsule 1 can be just inserted into the receiving chamber 4. The sampling capsule 1 is made of metal plates with a relatively thin wall thickness. In this way, the sampling capsule 1 is inserted into the receiving chamber 4 and then the soil sample is pushed into the receiving chamber 4 through the sampling push plate 2. During the pushing process of the soil sample, the sampling capsule 1 is gradually withdrawn, which will ensure to the greatest extent that the soil sample remains in its original state without becoming loose.

[0038] The depth of the receiving chamber 4 is designed so that the depth of the receiving chamber 4 is consistent with the length of the soil sample. After the soil sample is completely pushed into the receiving chamber 4 by the sampling push plate 2, the sampling push plate 2 just closes the opening (window) of the receiving chamber 4, thereby closing the receiving chamber 4. The sampling push plate 2 can be airtightly arranged on the entrance of the receiving chamber 4; a locking assembly 8 for locking the sampling push plate 2 is arranged on the outside of the receiving chamber 4. In the present invention, the locking assembly 8 can be any structure, such as a latch, a buckle, etc., and any device that can achieve the locking of the sampling push plate 2 can be applied to the present invention.

[0039] The soil sample is located below the surface and is subject to the pressure of the surrounding soil. After the soil sample is removed, if the pressure is lost, it will become loose. In order to simulate the pressure exerted by the soil on the soil sample, the present invention is provided with a pressure assembly in the receiving chamber 4. The pressure assembly includes an expandable unit 6 and a pressure plate 7 arranged on the expandable unit 6. The expandable unit 6 is made of a polymer material with a certain elasticity. The expandable unit 6 is a rectangular strip structure as a whole. When the pressure assembly is inside the receiving chamber 4, one side of the expandable unit 6 is fixed (can be fixed by strong glue) on the inner wall of the receiving chamber 4, and the other side of the expandable unit 6 is provided with a pressure plate 7, which is made of a hard plate material and contacts the soil sample to exert pressure on the soil sample. It should be noted that: when a pressure component is provided in the accommodation chamber 4, the accommodation chamber 4 should be appropriately expanded. After the pressure component is provided in the accommodation chamber 4, the space structure formed by the pressure plate 7 of the expandable unit 6 and the exposed inner side wall of the accommodation chamber 4 (i.e., the inner side wall of the accommodation chamber 4 without the pressure component) is consistent with the contour shape of the sampling chamber 1. The present invention also provides a power station connected to the expandable unit 6 for controlling the expansion or contraction of the expandable unit 6. In the present invention, the expandable unit 6 can be an air bag or a bag structure filled with fluid. The power station can provide air pressure or hydraulic pressure, so that the expandable unit 6 can expand to a certain extent, and the pressure applies pressure to the soil sample after the expandable unit 6 expands. Specifically, the expandable unit 6 is provided on the inner side of the accommodation chamber 4, and the pressure plate 7 can move in a direction perpendicular to the inner surface of the accommodation chamber 4 corresponding thereto, so that the pressure plate 7 can directly apply pressure to the soil sample.

[0040] Furthermore, the containing chamber 4 is a horizontally arranged rectangular cavity structure. In the depth direction of the containing chamber 4, one end of the containing chamber 4 is the entrance of the containing chamber 4 (that is, the window structure arranged on the front side of the sample chamber 3), and the other end of the containing chamber 4 is the inner end surface. The containing chamber 4 also includes two horizontal side surfaces and a top surface; the two horizontal side surfaces, the inner end surface and the top surface of the containing chamber 4 are all provided with pressure components.

[0041] Specifically, there are multiple pressure assemblies, and at least two pressure assemblies are arranged on the same inner side of the receiving chamber 4; among the multiple pressure assemblies arranged on the same inner side of the receiving chamber 4, the pressure plates 7 in two adjacent pressure assemblies are connected to the sides of their vertical projections. When there are multiple pressure assemblies, each expandable unit 6 of the pressure assembly is connected to a thin catheter, which extends outward through the sample chamber 3 and is then connected to the power station through a pneumatic or hydraulic component such as a pressure dividing valve. It should be noted that: for the wiring of the pipeline of the present invention, if it is necessary to pass through the sample chamber 3, glue sealing is performed at the opening of the sample chamber 3 (for the catheter to pass through); in addition, whether the present invention adopts hydraulic power or pneumatic power, its pipeline connection, etc. can follow the existing technology, which will not be repeated here; secondly, the wiring of the catheter must follow the wiring design standard of not affecting the observation of the soil sample. The present invention is provided with a pressure assembly, and the pressure plate 7 is brought into contact with and pressurized by the expansion of the expandable unit 6. Since the contour shape of the receiving chamber is designed according to the sampling cabin, the soil sample can basically completely fill the receiving chamber after being pushed into the receiving chamber. In this way, the expansion change of the expandable unit will be very small, and only a slight reduction in the edge of the pressure plate is required to provide a space margin for the movement of the pressure plate.

[0042] The present invention needs to simulate soil pressure and soil moisture. To this end, it is necessary to perform pressure detection and humidity detection on the soil environment around the sampling cabin 1 during the soil sampling process. Specifically, a mounting groove structure is provided on the side wall of the sampling cabin 1 close to its sampling end, and a first humidity sensor for obtaining soil moisture and a first pressure sensor for obtaining soil pressure around the sampling cabin 1 are provided in the mounting groove structure; a display screen for displaying data is connected to the first humidity sensor and the first pressure sensor. It should be noted that the first humidity sensor and the first pressure sensor are provided on the outer wall of the sampling cabin 1. Although they are far away from the sampling end, the first humidity sensor and the first pressure sensor must be located in the soil after the sampling cabin 1 is inserted into the soil. The present invention can obtain the pressure and humidity of the soil around the soil sample during the sampling process by providing the first humidity sensor and the first pressure sensor.

[0043] Based on the above embodiments, the present invention optimizes the structure of the sample cabin 3: the sample cabin 3 is provided with ventilation holes for water mist to pass through. The ventilation holes provided on the sample cabin 3 are the same as those of the receiving chamber 4, and the aperture thereof is smaller, so that the internal space of the receiving chamber 4 and the external space of the sample cabin 3 can achieve moisture exchange, and the soil can be prevented from passing through the ventilation holes; an outer shell 9 is provided on the outer side of the sample cabin 3, and the outer shell 9 is made of transparent acrylic material. The overall size of the outer shell 9 is larger than the size of the sample cabin 3, and the outer shell 9 can be mounted on the outer side of the sample cabin 3 (after the sample cabin 3 is loaded into the outer shell 9, at least the front side thereof is located on the outer side of the sample cabin 3, so that it is convenient to observe the soil sample from the front), the sample cabin 3 can be detachably loaded into the outer shell 9, and a plurality of rib structures are provided inside the outer shell 9 for supporting the sample cabin 3 after the sample cabin 3 is loaded, so that the outer shell 9 and the sample cabin 3 are kept at a distance, and a water storage component is provided between the sample cabin 3 and the outer shell 9. In the present invention, the water storage component is a sponge or other The porous material capable of absorbing and retaining water, after being provided with a water storage component, the water storage component can absorb a part of the water vapor, thereby forming a humid environment outside the sample cabin 3, and preventing the soil sample in the sample cabin 3 from losing water and drying out; a second humidity sensor 10 is connected to the water storage component; among the multiple pressure components arranged on the same inner side surface of the accommodating chamber 4, at least one pressure component is provided with a second pressure sensor for obtaining the pressure of the pressing plate 7, and by arranging the second humidity sensor 10 and the second pressure sensor, the humidity of the internal environment of the sample cabin 3 and the pressure exerted by the pressing plate 7 on the soil sample can be monitored in real time (the present invention also provides a display screen capable of displaying the data obtained by the second humidity sensor 10 and the second pressure sensor), and the operator can adjust the internal environment of the sample cabin 3 according to the original data (i.e., the humidity and pressure of the original soil obtained by the first humidity sensor and the first pressure sensor) (after the adjustment is completed, the corresponding valve can be closed, so that the internal environment of the sample cabin 3 can still maintain stability after being independent). The present invention is provided with a water mist inlet on the outer shell 9, and a valve is provided on the water mist inlet. A water mist spray system is connected to the outside of the valve. The present invention uses water mist to adjust the humidity, which can ensure the consistency of the wetness of the water storage component. The present invention adjusts the humidity as follows: after obtaining the data of the first humidity sensor (the data is the actual humidity data of the soil sample in the soil and the surrounding soil) as the adjustment reference value; then after all the soil samples are placed in the sample cabin, the data of the second humidity sensor is obtained (the data is the humidity value of the water storage component in the sample cabin when the soil sample is in the sample cabin); if the data obtained by the second humidity sensor is less than the data obtained by the first humidity sensor, the humidity of the water storage component is increased by spraying into the inner part of the outer shell until the data obtained by the second humidity sensor is equal to 1.3 times to 1.5 times the data obtained by the first humidity sensor.

[0044] To collect the original soil, it is necessary to manually dig the soil profile in the field. After the profile is dug to the parent material layer, use tools to take out the soil samples of corresponding sizes according to the occurrence layer, and then put the collected soil into the small squares of the soil box. However, in this process, the original soil will be broken, or the collected soil samples will not match the size of the soil box, resulting in the samples in the soil box. For example, sandy soil has a loose texture, which will cause the samples to loosen or scatter during the sampling process, so that the samples in the soil box cannot represent the original soil; for example, clay loam has a heavy texture and a complicated sampling process, which makes the soil samples taken loose. After taking out the samples, the soil samples are easily damaged due to the loose soil, and the original soil cannot be observed. During the indoor observation process, the collected soil samples are subject to greater human interference, and the soil specimens in the soil box will have certain differences from the soil in the natural state, which will cause certain differences between the observation results and the natural development of the soil, resulting in inaccurate results.

[0045] In order to solve this problem, the present invention provides a soil specimen sampler. The soil specimen sampler provided by the present invention belongs to a soil sampling device. In current scientific research, the preparation and preservation of soil box specimens are of great significance to soil science research. Soil box specimens are the basic basis for studying soil profile morphology and soil occurrence classification. Through soil box specimens, researchers can intuitively observe the hierarchical structure, color, texture and other characteristics of the soil, so as to analyze the formation process, fertility status and improvement measures of the soil. In addition, soil box specimens are also an important teaching resource for soil science education. In higher education, by making and displaying soil box specimens, students can better understand the principles and applications of soil science and improve their practical training and operation capabilities. Therefore, in the process of collecting and making soil box specimens, it is very necessary to ensure the original appearance and structure of the soil. The present invention provides a collection device capable of collecting and preserving soil to ensure the original appearance and structure of the soil in the process of making soil box specimens.

[0046] The purpose of the present invention is to provide a device for collecting original soil in a soil box. The sampler is widely applicable to collecting original soil specimens in a multi-layer soil box, and can be used for indoor simulation experiments, the collection of soil samples at different layers, the determination of various physical and chemical indicators of soil, the observation and research of soil morphological characteristics, and popular science and teaching. The original soil samples collected by the sampler are highly consistent with the soil in the natural state, and the physical and chemical properties and morphology of the soil in the natural state are completely preserved. The soil samples collected by the sampler fit the size of the soil box, and the original soil samples can be completely preserved, which is more conducive to the conduct of indoor simulation experiments and ensuring the accuracy of experimental results.

[0047] As can be seen from the above, the present invention provides a soil sample sampler, which includes: a sampling cabin 1, which is a straight cylindrical structure, one end of the sampling cabin 1 is a sampling end, and the other end of the sampling cabin 1 is provided with a sampling push plate 2, which can be movably arranged in the sampling cabin 1 and is used to push the taken soil sample out of the sampling cabin 1; a sample cabin 3, which has a plurality of receiving chambers 4 for receiving soil samples, and the sampling cabin 1 can be inserted into the receiving chamber 4 and the soil sample can be pushed into the receiving chamber 4 through the sampling push plate 2.

[0048] Through the above structural design, the present invention can at least achieve the following beneficial effects:

[0049] 1. High efficiency. Compared with the existing whole-section specimen sampler, the present invention has fewer tools attached to the sampling cabin 1, and the sampling is convenient and accurate;

[0050] 2. Avoid damage to the sample obtained by the sampling cabin 1. Compared with the existing sampler, the present invention can collect the original soil of the soil layer, avoid the contact of the staff with the soil during the sampling process, and reduce the damage to the soil sample during the sampling process;

[0051] 3. A sample cabin 3 is provided. After taking samples using the sampling cabin 1, the samples can be directly transferred to the sample cabin 3, thus avoiding damage to the soil structure caused by soil sample transfer;

[0052] 4. The sample chamber 3 can simulate the underground pressure environment and the wet environment, so that the soil sample can maintain its original shape to the greatest extent.

[0053] It is known from common technical knowledge that the present invention can be implemented by other embodiments that do not deviate from its spirit or essential features. Therefore, the above disclosed embodiments are only illustrative in all respects and are not exclusive. All changes within the scope of the present invention or within the scope equivalent to the present invention are included in the present invention.

Claims

1. A soil sampler, characterized in that: include: A sampling cabin (1), the sampling cabin is a straight cylindrical structure, one end of the sampling cabin is a sampling end, and the other end of the sampling cabin is provided with a sampling push plate (2), the sampling push plate can be movably arranged in the sampling cabin and is used to push the taken soil sample out of the sampling cabin; The sample cabin (3) has a plurality of receiving chambers (4) for receiving soil samples. The sampling cabin body can be inserted into the receiving chambers and the soil samples can be pushed into the receiving chambers through the sampling pushing plate.

2. The soil sampler according to claim 1, characterized in that: The edge of the opening of the sampling cabin at the sampling end thereof is provided with a blade structure.

3. The soil sampler according to claim 1, characterized in that: The sampling push plate is a transparent hard plate, and the sampling push plate is detachably fixed on the entrance of the containing chamber.

4. The soil sampler according to claim 1, characterized in that: It also includes a pushing component (5) for stably pushing the sampling push plate, and the pushing component can abut against the sampling push plate to push the sampling push plate toward the sampling end; The outer side surface of the pushing component is slidably matched with the inner side surface of the sampling chamber.

5. The soil sampler according to claim 1, characterized in that: A pressure assembly is arranged in the accommodation chamber, and the pressure assembly comprises an expandable unit (6) and a pressure plate (7) arranged on the expandable unit; Also included is a power station connected to the expandable unit for controlling the expansion or contraction of the expandable unit; The expandable unit is disposed on the inner side surface of the accommodation chamber, and the pressing plate can move in a direction perpendicular to the inner side surface of the accommodation chamber corresponding thereto.

6. The soil sampler according to claim 5, characterized in that: The receiving chamber is a horizontally arranged rectangular cavity structure. In the depth direction of the receiving chamber, one end of the receiving chamber is the entrance of the receiving chamber, and the other end of the receiving chamber is the inner end surface. The receiving chamber also includes two horizontal side surfaces and a top surface. The pressure components are arranged on both horizontal side surfaces, the inner end surface and the top surface of the accommodation chamber.

7. The soil sampler according to claim 6, characterized in that: The pressure components are provided in plurality, and at least two pressure components are provided on the same inner side surface of the accommodation chamber; Among the multiple pressure assemblies arranged on the same inner side surface of the accommodating chamber, the pressure plates in two adjacent pressure assemblies have their sides of vertical projection connected.

8. The soil sampler according to claim 1, characterized in that: The sampling push plate can be airtightly arranged on the entrance of the containing chamber; A locking assembly (8) for locking the sampling push plate is arranged on the outside of the containing chamber.

9. The soil sampler according to claim 5, characterized in that: A mounting groove structure is provided on the side wall of the sampling chamber near the sampling end thereof, and a first humidity sensor for obtaining soil humidity and a first pressure sensor for obtaining soil pressure around the sampling chamber are provided in the mounting groove structure; A display screen for displaying data is connected to the first humidity sensor and the first pressure sensor.

10. The soil sampler according to claim 9, characterized in that: The sample chamber is provided with ventilation holes; An outer shell (9) is arranged outside the sample chamber, the outer shell and the sample chamber are spaced apart, a water storage component is arranged between the sample chamber and the outer shell, and a second humidity sensor (10) is connected to the water storage component; Among the multiple pressure components arranged on the same inner side surface of the accommodation chamber, at least one of the pressure components is provided with a second pressure sensor for obtaining the pressure of the pressure plate; A water mist inlet is arranged on the outer shell, a valve is arranged on the water mist inlet, and a water mist spraying system is externally connected through the valve.

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