An environmental detection sampling device

Abstract

The present invention relates to the technical field of sampling devices, and in particular provides an environmental detection sampling device, which includes a handle assembly and a cylinder body arranged below the handle assembly. The cylinder body is composed of two symmetrically arranged half cylinders. A plurality of elastic sheets are arranged on the inner side of each half cylinder; in the radial direction of the half cylinder, some elastic sheets are located in the inner circle, and the remaining elastic sheets are located in the outer circle. The elastic sheets located in the outer circle are configured to move downward relative to the sampled soil under the drive of the cylinder body; and after the elastic sheets at the bottom end of the outer circle move downward and are staggered from the elastic sheets at the bottom end of the inner circle, they move from the outer circle to the inner circle, so as to clamp the sampled soil and be fixed relative to the sampled soil. The solution of the present invention fixes the elastic sheets in the inner circle, and a plurality of elastic sheets in the outer circle sequentially enter the inner circle and are fixed relative to the sampled soil, shortening the friction displacement distance between the elastic sheets and the sampled soil, thereby reducing the compression rate of the sampled soil in the axial direction of the cylinder body and improving the structural integrity of the sampled soil.

Description

Technical Field

[0001] The present invention relates to the technical field of sampling devices, and particularly to an environmental detection sampling device. Background Art

[0002] The existing environmental sampling devices usually include soil, gas, and water quality sampling. The patent document with the application publication number CN119534000A discloses a deep soil sampling device for garden strata and its sampling method. The soil sampling device includes a plurality of arc-shaped elastic pieces, which are fixed at equal intervals in a circle on the drill bit. The upper end of the arc-shaped elastic piece is fixedly connected to the lower end of the sleeve rod, and the outer diameter of the initial arc-shaped elastic piece is the same as the outer diameter of the sleeve rod, reducing the force required for the drill rod to insert into the deep strata and facilitating the downward insertion of the drill rod. During sampling, the arc-shaped elastic pieces open, and the rotation of the drill rod drives the arc-shaped elastic pieces to scrape the soil. The soil enters the inside of the drill rod through the gaps between adjacent arc-shaped elastic pieces to achieve sampling. However, this device samples by scraping, which causes serious damage to the soil layer, and the soil is compressed under the friction of the inner wall of the drill rod after entering the drill rod, resulting in the destruction of the original structure of the soil, thus affecting the subsequent detection accuracy. In addition, due to the frictional resistance generated between the soil and the drill rod, the resistance suffered by the drill rod during insertion and extraction from the soil is relatively large during soil sampling, reducing the soil sampling efficiency. Summary of the Invention

[0003] One object of the present invention is to reduce the compression rate of the sampled soil, improve the structural integrity of the sampled soil, and thereby improve the detection accuracy.

[0004] Another object of the present invention is to reduce the sampling difficulty and improve the sampling efficiency.

[0005] In particular, the present invention provides an environmental detection sampling device, including: a handle assembly; a cylinder body, disposed below the handle assembly and connected to the handle assembly; the cylinder body is composed of two symmetrically arranged half-cylinders; a plurality of elastic pieces are provided on the inner side of each half-cylinder; in the radial direction of the half-cylinder, some elastic pieces are located in the inner circle closer to the axis of the half-cylinder, and the remaining elastic pieces are located in the outer circle farther from the axis of the half-cylinder; wherein, the elastic pieces in the outer circle and the elastic pieces in the inner circle are arranged in sequence in the axial direction of the half-cylinder; the elastic pieces in the outer circle are configured to move downward relative to the sampled soil under the drive of the cylinder body; and the elastic pieces at the bottom of the outer circle move from the outer circle to the inner circle after moving downward and staggering with the elastic pieces at the bottom of the inner circle, so as to clamp the sampled soil and fix it relative to the sampled soil.

[0006] Furthermore, a sliding component is provided on the outer side of each elastic sheet; the inner wall surface of the semi-cylinder is provided with an inner sliding groove and an outer sliding groove extending in the axial direction. The inner sliding groove is closer to the axis of the semi-cylinder than the outer sliding groove, and the bottom ends of the inner sliding groove and the outer sliding groove are communicated; the sliding component slides in the inner sliding groove or the outer sliding groove, and the shape of the sliding component is adapted to that of the inner sliding groove and the outer sliding groove.

[0007] Furthermore, the environmental detection sampling device further includes: an elastic component provided between the upper end wall of the cylinder body and the elastic sheet, with one end abutted against the upper end wall of the cylinder body and the other end abutted against the elastic sheet at the top of the outer ring.

[0008] Furthermore, the top surface and the bottom surface of the elastic sheet are both wedge-shaped surfaces that gradually approach the axis of the cylinder body from bottom to top.

[0009] Furthermore, the end wall of the bottom end of the outer sliding groove is higher than the end wall of the bottom end of the inner sliding groove; and an inclined connecting surface is formed at the connection between the outer sliding groove and the inner sliding groove.

[0010] Furthermore, the environmental detection sampling device further includes: an outer cylinder rotatably sleeved on the outer periphery of the cylinder body for cutting the soil on the outer periphery of the cylinder body; a plurality of cut blocks are provided at the bottom end of the outer cylinder at intervals in the circumferential direction, and the cut blocks have wedge-shaped cutting surfaces.

[0011] Furthermore, the elastic sheet at the bottom end of the outer ring partially extends out of the cylinder body.

[0012] Furthermore, the bottom surface of the cut block is higher than the bottom surface of the elastic sheet extending out of the cylinder body.

[0013] Furthermore, a detachable blade is installed on the cutting surface of the cut block.

[0014] Furthermore, the environmental detection sampling device further includes: a driving device provided on the handle assembly for driving the outer cylinder to rotate.

[0015] The beneficial effects of the present invention are as follows:

[0016] For the environmental detection sampling device of the present invention, the elastic sheets located in the outer ring are sequentially inserted into the inner ring during the sampling process, and the elastic sheets located in the inner ring are fixed relative to the sampled soil, so that the friction displacement distance generated between each elastic sheet and the soil is only the height of the elastic sheet, shortening the friction displacement distance between the elastic sheet and the sampled soil, thereby reducing the compression rate of the sampled soil in the axial direction, improving the integrity of the overall structure of the sampled soil, and further ensuring the subsequent detection accuracy. In addition, during the sampling process, only one elastic sheet at the bottom end of the outer ring is in direct contact with the soil and generates frictional resistance, reducing the frictional resistance received when the cylinder body is inserted into the soil for sampling, thereby reducing the sampling difficulty and improving the sampling efficiency.

[0017] Furthermore, in the environmental detection sampling device of the present invention, by sleeving a rotatable outer cylinder outside the cylinder body, the rotation of the outer cylinder is used to cut and break the surrounding soil, making the soil on the outer periphery of the outer cylinder loose, thereby reducing the sampling difficulty and improving the sampling efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Some specific embodiments of the present invention will be described in detail hereinafter with reference to the drawings in an exemplary but non-limiting manner. The same reference numerals in the drawings denote the same or similar components or parts. In the drawings:

[0019] Figure 1 is a schematic structural diagram of an environmental detection sampling device according to an embodiment of the present invention;

[0020] Figure 2 is a schematic structural diagram of the environmental detection sampling device from another angle according to an embodiment of the present invention;

[0021] Figure 3 is along Figure 2 the schematic cross-sectional view taken along the cutting line A-A in

[0022] Figure 4 is Figure 3 the schematic enlarged view of the area C in

[0023] Figure 5 is Figure 3 the schematic enlarged view of the area D in

[0024] Figure 6 is a schematic structural diagram of the environmental detection sampling device from another angle according to an embodiment of the present invention;

[0025] Figure 7 is Figure 6 the schematic enlarged view of the area E in

[0026] Figure 8 is along Figure 2 the schematic cross-sectional view taken along the cutting line B-B in

[0027] Figure 9 is Figure 8 the schematic enlarged view of the area F in

[0028] Figure 10 is the exploded schematic diagram of the environmental detection sampling device according to an embodiment of the present invention;

[0029] Figure 11 is Figure 10 the schematic enlarged view of the area G in

[0030] Figure 12 is Figure 10 the schematic enlarged view of the area H in

[0031] Figure 13 is a schematic cross-sectional view of the cylinder of the environmental detection sampling device according to an embodiment of the present invention;

[0032] Figure 14 is Figure 13 a schematic enlarged view of region I in

[0033] Figure 15 is Figure 13 a schematic enlarged view of region J in

[0034] Wherein:

[0035] 100, handle assembly; 110, connecting column; 120, stud; 130, connecting cylinder; 200, cylinder; 210, half cylinder; 211, inner sliding groove; 212, outer sliding groove; 220, connecting surface; 230, connecting member; 240, upper end wall; 300, elastic sheet; 310, sliding assembly; 311, slider; 320, top surface; 330, bottom surface; 400, elastic assembly; 410, elastic element; 500, outer cylinder; 510, cut block; 511, cut surface; 520, blade; 530, fastener; 600, driving device. Detailed implementation manners

[0036] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0037] In this article, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features, that is, including one or more of such features. In the description of the present invention, the meaning of "a plurality" is at least two, for example, two, three, etc., unless otherwise specifically defined. When a certain feature "includes or contains" a certain or certain features it covers, unless otherwise specifically described, this indicates that other features are not excluded and other features may be further included.

[0038] It should be understood that the orientation or positional relationship indicated by the terms "top", "bottom", "inner", "outer", "circumferential", "radial", "axial", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation of the present invention.

[0039] Next, refer toFigures 1 to 15 To describe an environmental detection sampling device provided by the present invention.

[0040] The environmental detection sampling device can generally include a handle assembly 100 and a cylinder 200. The cylinder 200 is arranged below the handle assembly 100 and connected to the handle assembly 100. The cylinder 200 is composed of two symmetrically arranged half cylinders 210. A plurality of elastic sheets 300 are arranged on the inner side of each half cylinder 210; in the radial direction of the half cylinder 210, some of the elastic sheets 300 are located in the inner circle closer to the axis of the half cylinder 210, and the remaining elastic sheets 300 are located in the outer circle farther from the axis of the half cylinder 210; wherein, the elastic sheets 300 located in the outer circle and the elastic sheets 300 located in the inner circle are arranged in sequence in the axial direction of the half cylinder 210. The elastic sheet 300 located at the outer ring is configured to move downward relative to the sampled soil under the drive of the cylinder 200; and the elastic sheet 300 located at the bottom end of the outer ring moves from the outer ring to the inner ring after moving downward to be offset from the elastic sheet 300 at the bottom end of the inner ring, thereby clamping the sampled soil and fixing it relative to the sampled soil.

[0041] like Figure 3 , 5 As shown, the elastic sheet 300 is preferably configured as an arc-shaped sheet that is consistent with the curvature of the half-cylinder 210. Each elastic sheet 300 on one half-cylinder 210 is opposite to an elastic sheet 300 on another half-cylinder 210 and moves synchronously.

[0042] Before sampling, there is only one elastic sheet 300 in the inner ring, and multiple elastic sheets 300 are arranged in sequence in the outer ring along the axial direction. The elastic sheet 300 in the inner ring overlaps with the elastic sheet 300 at the bottom of the outer ring in the radial direction. When sampling begins, the handle assembly 100 is pressed down to drive the cylinder 200 to be inserted into the soil. During the process of the cylinder 200 being inserted into the soil, the elastic sheet 300 located in the inner ring is fixed relative to the soil under the friction resistance of the soil, and the elastic sheet 300 located in the outer ring is driven by the cylinder 200 to penetrate into the soil. The elastic sheet 300 in the outer ring and the elastic sheet 300 in the inner ring generate relative displacement in the axial direction. Whenever the elastic sheet 300 at the bottom of the outer ring moves down to be offset from the elastic sheet 300 at the bottom of the inner ring, the elastic sheet 300 at the bottom of the outer ring will move from the outer ring to the inner ring, thereby clamping the sampled soil to form a sample core, and being fixed relative to the sampled soil under the action of friction. The elastic sheets 300 located in the outer ring enter the inner ring one by one until only one elastic sheet 300 is left in the outer ring, and the sampling is completed. Then, the cylinder 200 is pulled out by the handle assembly 100 to take out the sampled soil.

[0043] In the solution of this embodiment, it is set that the elastic pieces 300 located in the outer ring enter the inner ring in sequence during the sampling process, and the elastic pieces 300 located in the inner ring are fixed relative to the sampled soil, so that the frictional displacement distance generated between each elastic piece 300 and the soil is only the height of the elastic piece 300, shortening the frictional displacement distance between the elastic piece 300 and the sampled soil, thereby reducing the compression rate of the sampled soil in the axial direction, improving the integrity of the overall structure of the sampled soil, and further ensuring the subsequent detection accuracy. In addition, during the sampling process, only one elastic piece 300 at the bottommost of the outer ring is in direct contact with the soil and generates frictional resistance, reducing the frictional resistance received when the cylinder body 200 is inserted into the soil for sampling, thereby reducing the sampling difficulty and improving the sampling efficiency.

[0044] In some preferred embodiments, the cylinder body 200 and the handle assembly 100 are fixedly connected. As Figure 3 shown, the handle assembly 100 includes a connecting column 110 extending downward and a stud 120, and a corresponding threaded hole is formed on the upper end wall 240 of the cylinder body 200. The cylinder body 200 and the handle assembly 100 are in threaded cooperation, so as to prevent the cylinder body 200 from rotating during the sampling process, avoiding the circumferential frictional displacement between the elastic piece 300 and the sampled soil, and further ensuring the structural integrity of the sampled soil.

[0045] A sliding assembly 310 is arranged on the outer side of each elastic piece 300. Inner sliding grooves 211 and outer sliding grooves 212 are arranged on the inner wall surface of the half cylinder 210. The inner sliding grooves 211 are closer to the axis of the half cylinder 210 than the outer sliding grooves 212, and the bottom ends of the inner sliding grooves 211 and the bottom ends of the outer sliding grooves 212 are communicated. The sliding assembly 310 slides in the inner sliding grooves 211 or the outer sliding grooves 212, and the sliding assembly 310 is adapted to the shapes of the inner sliding grooves 211 and the outer sliding grooves 212.

[0046] In the solution of this embodiment, by arranging the sliding assembly 310 on the elastic piece 300 and arranging the adapted inner sliding grooves 211 and outer sliding grooves 212 on the inner side of the half cylinder 210, and using the cooperation of the sliding assembly 310 and the inner sliding grooves 211 and the outer sliding grooves 212, the elastic piece 300 is guided to move relative to the cylinder body 200 in the axial direction. The bottom ends of the inner sliding grooves 211 and the bottom ends of the outer sliding grooves 212 are communicated, so that the sliding assembly 310 can change positions between the inner sliding grooves 211 and the outer sliding grooves 212. After the sliding assembly 310 slides to the bottom end of the outer sliding groove 212, it can move from the outer sliding groove 212 to the inner sliding groove 211, so that the elastic pieces 300 in the outer ring can smoothly enter the inner ring from the outer ring.

[0047] As Figure 8As shown, in some embodiments, two sliding assemblies 310 may be provided on the outer side wall of the elastic sheet 300, and the two sliding assemblies 310 are respectively provided at the two sides of the elastic sheet 300. Two inner slide grooves 211 and two outer slide grooves 212 are correspondingly provided on the inner side wall of the semi-cylinder 210. The two sliding assemblies 310 slide in the two inner slide grooves 211 or the two outer slide grooves 212 respectively. The two sliding assemblies 310 jointly support the elastic sheet 300 and jointly guide the movement of the elastic sheet 300, thereby improving the structural stability of the elastic sheet 300 and making the movement of the elastic sheet 300 more stable and smooth. Each sliding assembly 310 may include a plurality of sliders 311 arranged at intervals.

[0048] The inner slide groove 211 and the outer slide groove 212 are preferably configured as T-shaped grooves, and the slider 311 is preferably configured as a T-shaped slider or a T-shaped slide bar to ensure that the slider 311 will not separate from the outer slide groove 212 and the inner slide groove 211 when moving along the inner slide groove 211 and the outer slide groove 212.

[0049] The two half cylinders 210 are connected together by a connecting member 230 (eg, a screw or a bolt). The half cylinders 210 are directly disassembled from the connection, which can avoid friction displacement between the soil and the elastic sheet 300 when taking out the soil sample, thereby ensuring the structural integrity of the sampled soil.

[0050] In some preferred embodiments, the elastic sheet 300 may be made of a material with good elasticity. During the gradual dislocation of the elastic sheet 300 of the outer ring and the elastic sheet 300 of the inner ring in the axial direction, after a partial clearance space appears in the inner ring, the elastic sheet 300 of the outer ring may first partially enter the inner ring, and then gradually and completely enter the inner ring as the degree of dislocation increases.

[0051] The environment detection sampling device may generally further include an elastic component 400. The elastic component 400 is disposed between the upper end wall 240 of the cylinder 200 and the elastic sheet 300, with one end abutting against the upper end wall 240 of the cylinder 200 and the other end abutting against the elastic sheet 300 at the top of the outer ring.

[0052] In the solution of this embodiment, an elastic component 400 is arranged to press the elastic sheet 300 at the top of the outer ring, so that the elastic sheet 300 of the outer ring moves downward synchronously with the cylinder 200 during the downward movement of the cylinder 200. In addition, after the elastic sheet 300 at the bottom end of the outer ring enters the inner ring, the elastic component 400 can also press the remaining elastic sheets 300 of the outer ring to move downward relative to the cylinder 200, so that the elastic sheet 300 of the outer ring can move to the bottom end of the cylinder 200 (that is, the sliding component 310 in the outer slide groove 212 can slide along the outer slide groove 212 to the bottom end of the outer slide groove 212).

[0053] like Figures 3 - 8As shown, in some preferred embodiments, the elastic component 400 may include a plurality of elastic elements 410 spaced apart along the circumferential direction. The elastic element 410 may generally be configured as a compression spring, which is not only simple in structure, easy to install, and low in cost, but also stable and reliable in operation. In other embodiments, the elastic component 400 may also be configured as a hydraulic / pneumatic cylinder, etc.

[0054] The top surface 320 and the bottom surface 330 of the elastic sheet 300 are both wedge-shaped surfaces that gradually approach the axis of the cylinder 200 from bottom to top.

[0055] In the solution of this embodiment, the top surface 320 and the bottom surface 330 of the elastic sheet 300 are set as wedge-shaped surfaces that gradually approach the axis from bottom to top, so that when the elastic sheet 300 located at the top presses the elastic sheet 300 below, it will push the elastic sheet 300 below to move in the direction close to the axis. It is ensured that when there is a space for making way in the inner circle, the elastic sheet 300 at the bottom end of the outer circle can smoothly move from the outer circle to the inner circle. In addition, the bottom surface 330 of the elastic sheet 300 is set as a wedge-shaped surface, which also reduces the difficulty of inserting the elastic sheet 300 into the soil, thereby reducing the difficulty of sampling and improving the sampling efficiency.

[0056] The end wall of the bottom end of the outer slide groove 212 is higher than the end wall of the bottom end of the inner slide groove 211 ; and an inclined connection surface 220 is formed at the connection point between the outer slide groove 212 and the inner slide groove 211 .

[0057] In the solution of this embodiment, the end wall of the bottom end of the outer slide groove 212 is set to be higher than the end wall of the bottom end of the inner slide groove 211, and the connection between the outer slide groove 212 and the inner slide groove 211 is set to an inclined connection surface 220, so that the sliding component 310 at the bottom end of the outer slide groove 212 can slide to the inner slide groove 211 along the inclined connection surface 220 under the action of the resistance pressure, further reducing the difficulty of the elastic component 400 moving from the outer slide groove 212 to the inner slide groove 211, thereby ensuring that the elastic sheet 300 of the outer ring can smoothly enter the inner ring.

[0058] In other embodiments, a telescopic member that can move radially of the semi-cylinder 210 may be provided on the inner wall of the semi-cylinder 210, and the telescopic member is opposite to the connection between the outer slide groove 212 and the inner slide groove 211. The telescopic member pushes the elastic sheet 300 of the outer ring in the radial direction, so that the elastic sheet 300 can smoothly enter the inner ring when there is space for the inner ring to make way.

[0059] The environmental detection sampling device can generally further include an outer cylinder 500. The outer cylinder 500 is rotatably sleeved on the outer periphery of the cylinder body 200, and is used to cut the soil on the outer periphery of the cylinder body 200.

[0060] In the solution of this embodiment, by sleeving a rotatable outer cylinder 500 outside the cylinder body 200, the soil around the outer periphery of the cylinder body 200 is cut by the rotating outer cylinder 500, making the soil around the outer periphery of the cylinder body 200 loose, thereby reducing the frictional resistance when the cylinder body 200 is inserted / extracted from the soil, lowering the difficulty of sampling of the cylinder body 200, and further improving the sampling efficiency.

[0061] A plurality of cut blocks 510 are arranged at the bottom end of the outer cylinder 500 at intervals in the circumferential direction, and the cut blocks 510 have wedge-shaped cutting surfaces 511.

[0062] In the solution of this embodiment, by arranging a plurality of cut blocks 510 at intervals in the circumferential direction at the bottom end of the outer cylinder 500, and using their wedge-shaped cutting surfaces 511 to cut the soil, the cutting difficulty is reduced, the soil around the outer periphery of the cylinder body 200 becomes looser, the sampling difficulty is further reduced, and the sampling efficiency is improved.

[0063] As Figure 8 、 12 shown, in some preferred embodiments, a plurality of cut blocks 510 protrude from the bottom end of the outer cylinder 500 and are evenly distributed at the bottom end of the outer cylinder 500, further improving the soil loosening effect.

[0064] A part of the elastic sheet 300 at the bottom end of the outer ring extends out of the cylinder body 200. That is to say, when the sliding component 310 abuts against the bottom end of the outer sliding groove 212, a part of the elastic sheet 300 connected thereto extends out of the cylinder body 200.

[0065] In the solution of this embodiment, it is set that a part of the elastic sheet 300 at the bottom end of the outer ring extends out of the cylinder body 200, thereby reducing the contact area when the bottom end of the environmental detection sampling device first contacts the soil, and further reducing the cutting resistance. The relatively thin elastic sheet 300 first cuts the soil, and then the whole cylinder body 200 is inserted into the soil, reducing the difficulty of the cylinder body 200 moving downward, reducing the sampling difficulty, and improving the sampling efficiency.

[0066] The bottom surface 330 of the cut block 510 is higher than the bottom surface 330 of the elastic sheet 300 extending out of the cylinder body 200.

[0067] In the solution of this embodiment, it is set that the bottom surface 330 of the cut block 510 is higher than the bottom surface 330 of the elastic sheet 300 extending out of the cylinder body 200, so that after the elastic sheet 300 extending out of the cylinder body 200 first cuts the soil, the cut block 510 cuts and disperses the soil around the outer periphery of the cylinder body 200, thereby avoiding the influence of the cutting of the cut block 510 on the sampled soil, ensuring the integrity of the structure of the sampled soil while improving the sampling efficiency, and enhancing the sampling effect.

[0068] Detachable blades 520 are installed on the cutting surfaces 511 of the cut blocks 510.

[0069] In the solution of this embodiment, by installing a detachable blade 520 on the cut surface 511 of the cut block 510, the cutting becomes sharper, enabling foreign objects such as weeds and tree roots in the soil to be smoothly cut off. While further improving the cutting efficiency, the detachable setting reduces the difficulty of installation and maintenance. By replacing the sharp blade 520, the cutting efficiency can be improved, ensuring the soil loosening effect.

[0070] The environmental detection sampling device generally may further include a driving device 600. The driving device 600 is arranged on the handle assembly 100 and is used to drive the outer cylinder 500 to rotate.

[0071] In the solution of this embodiment, by using the driving device 600 to drive the outer cylinder 500 to rotate, the operation is more labor-saving and lighter, further reducing the sampling difficulty and improving the sampling efficiency.

[0072] As Figure 3 shown, in some embodiments, the driving device 600 is preferably set as a motor. A connecting cylinder 130 is sleeved on the connecting column 110. The connecting cylinder 130 and the outer cylinder 500 are connected by a fastener 530 (such as a screw or a bolt, etc.). The connecting cylinder 130 and the motor can be connected by gears.

[0073] Combined with the above embodiments, the specific working process of the environmental detection sampling device provided by the present invention is described as follows:

[0074] When the environmental detection sampling device has not started sampling, there is only one elastic piece 300 in the inner ring, and there are multiple elastic pieces 300 arranged in sequence along the axial direction of the cylinder body 200 in the outer ring. Correspondingly, there is only one sliding component 310 in the inner sliding groove 211, and there are multiple sliding components 310 arranged in sequence in the outer sliding groove 212.

[0075] When starting to sample, the handle assembly 100 is pressed down, driving the cylinder body 200 to move downward. Under the pressing of the elastic component 400, the elastic pieces 300 in the outer ring move downward with the cylinder body 200. The lowermost elastic piece 300 in the outer ring first contacts the soil and inserts into the soil. Then the cut blocks 510 on the outer periphery of the cylinder body 200 start to contact the soil and cut the soil by rotating.

[0076] During the continuous downward movement of the cylinder body 200, the elastic piece 300 in the inner ring is fixed relative to the soil under the frictional resistance, and the elastic pieces 300 in the outer ring continuously penetrate into the soil and generate relative displacement with the elastic piece 300 in the inner ring. During the process that the elastic piece 300 at the bottom end of the outer ring and the elastic piece 300 at the bottom end of the inner ring are gradually staggered, under the pressing of the elastic component 400, the elastic piece 300 at the bottom end of the outer ring gradually enters the inner ring from the outer ring. Correspondingly, the lowermost sliding component 310 in the outer sliding groove 212 gradually enters the inner sliding groove 211 under the guidance of the inclined connecting surface 220.

[0077] After the elastic pieces 300 on the outer ring enter the inner ring, they wrap the sampled soil to form a soil core.

[0078] After the elastic piece 300 at the bottommost end of the outer ring completely enters the inner ring, the remaining elastic pieces 300 of the outer ring move downward relative to the cylinder 200 under the pressing of the elastic component 400, so that the remaining elastic pieces 300 of the outer ring move to the bottom end of the cylinder 200. During the process of the cylinder continuously penetrating into the soil, the elastic pieces 300 on the outer ring enter the inner ring one by one until only one elastic piece 300 remains on the outer ring, completing the sampling. Correspondingly, only one sliding component 310 remains in the outer chute 212, and there are multiple sliding components 310 arranged in sequence in the inner chute 211.

[0079] After the sampling is completed, take out the environmental detection sampling device, and disassemble the outer cylinder 500 and the cylinder 200 in sequence to obtain the soil sample.

[0080] During the downward movement of the cylinder 200, the outer cylinder 500 is driven by the driving device 600 to drive the cutting block 510 to rotate continuously, making the soil on the outer periphery of the cylinder 200 loose, thereby reducing the frictional resistance when the environmental detection sampling device is inserted into and withdrawn from the soil, reducing the sampling difficulty, and improving the sampling efficiency.

[0081] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0082] The above-described embodiments only represent several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. An environmental detection sampling device, characterized in that, Comprising: A handle assembly; A cylinder body, disposed below the handle assembly and connected to the handle assembly; the cylinder body is composed of two symmetrically arranged semi-cylinders; A plurality of elastic pieces are provided on the inner side of each semi-cylinder; in the radial direction of the semi-cylinder, some of the elastic pieces are located in the inner circle closer to the axis of the semi-cylinder, and the rest of the elastic pieces are located in the outer circle farther from the axis of the semi-cylinder; wherein, the elastic pieces located in the outer circle and the elastic pieces located in the inner circle are arranged in sequence in the axial direction of the semi-cylinder; The elastic pieces located in the outer circle are configured to move downward relative to the sampled soil under the drive of the cylinder body; and the elastic pieces located at the bottom end of the outer circle move from the outer circle to the inner circle after moving downward and staggering with the elastic pieces at the bottom end of the inner circle, so as to clamp the sampled soil and be fixed relative to the sampled soil; A sliding assembly is provided on the outer side of each elastic piece; an inner chute and an outer chute extending in the axial direction are provided on the inner wall surface of the semi-cylinder, the inner chute is closer to the axis of the semi-cylinder than the outer chute, and the bottom end of the inner chute is communicated with the bottom end of the outer chute; the sliding assembly slides in the inner chute or the outer chute, and the shapes of the sliding assembly, the inner chute and the outer chute are adapted to each other.

2. The environmental detection sampling device according to claim 1, wherein Further comprising: An elastic assembly, disposed between the upper end wall of the cylinder body and the elastic piece, with one end abutted against the upper end wall of the cylinder body and the other end abutted against the elastic piece located at the top end of the outer circle.

3. The environmental detection sampling device according to claim 2, wherein The top surface and the bottom surface of the elastic piece are both wedge-shaped surfaces that gradually approach the axis of the cylinder body from bottom to top.

4. The environmental detection sampling device according to claim 3, wherein The end wall of the bottom end of the outer chute is higher than the end wall of the bottom end of the inner chute; and an inclined connection surface is formed at the connection part of the outer chute and the inner chute.

5. The environmental detection sampling device according to claim 1, characterized in that, Further comprising: An outer cylinder, rotatably sleeved on the outer periphery of the cylinder body for cutting the soil on the outer periphery of the cylinder body; A plurality of cut blocks are provided at the bottom end of the outer cylinder, and the cut blocks have wedge-shaped cutting surfaces.

6. The environmental detection sampling device according to claim 5, wherein The elastic piece located at the bottom end of the outer circle partially extends out of the cylinder body.

7. The environmental detection sampling device according to claim 6, wherein The bottom surface of the cut block is higher than the bottom surface of the elastic piece extending out of the cylinder body.

8. The environmental detection sampling device according to claim 5, wherein Detachable blades are installed on the cutting surfaces of the cut blocks.

9. The environmental detection sampling device according to claim 5, characterized in that Further comprising: A driving device, disposed on the handle assembly for driving the outer cylinder to rotate.

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