Quantitative non-disturbance soil sampling device

Abstract

The utility model belongs to the technical field of soil environment detection equipment, and provides a quantitative non-disturbance soil sampling device which comprises a sampling cylinder, a push plug and a quantitative assembly, and the quantitative assembly comprises a connecting rod and a plurality of quantitative blocks arranged on the connecting rod at intervals; the connecting rod is rotatably arranged on the push plug; the sampling cylinder is provided with a bearing outer edge, and the bearing outer edge is provided with a quantitative through hole matched with the connecting rod and the quantitative block, so that the quantitative block and the connecting rod penetrate through the quantitative through hole to move up and down so as to complete quantification; the distance between the adjacent quantitative blocks is not smaller than the thickness of the bearing outer edge, so that the quantitative blocks can be clamped and limited through the bearing outer edge after the connecting rod is rotated, and sampling is facilitated. The quantitative non-disturbance soil sampling device provided by the utility model overcomes the defects of complicated quantitative process steps and low sampling efficiency of the existing soil sampler, is simple in structure and convenient to use, effectively improves the soil sampling efficiency, is low in production and use cost, reduces the soil detection cost, and is high in practicability.

Description

Technical Field

[0001] The utility model belongs to the technical field of soil environment detection equipment, and particularly relates to a quantitative non-disturbance soil sampling device. Background Art

[0002] The non-disturbance soil samplers currently on the market include dosing devices and samplers. Both devices generally adopt separate and independent structures. During use, the sampler (piston sampling cylinder) needs to be snapped into the dosing slot of the dosing device to complete dosing and sampling. Figure 1 As shown. Whenever a sampling is completed, the sampler needs to be taken out of the quantitative device, and then the sampler for the next sampling is clamped and placed in the quantitative device for quantitative and sampling. The above steps are repeated to complete multiple samplings, which brings great inconvenience to the sampling process. At the same time, since the soil detection sampling process often requires multiple sampling of the same sampling point and multiple sampling of different sampling points, repeatedly placing the sampler in the quantitative device for quantitative measurement consumes a lot of time and manpower, seriously affecting the efficiency of soil sampling and detection, and sampling cannot be performed at multiple points at the same time; and the existing quantitative devices are generally more expensive than samplers (such as disposable white plastic sampling tube plugs). If multiple quantitative devices are purchased to improve the sampling efficiency, the cost of soil sampling and detection will inevitably increase; in addition, since the quantitative devices are usually reused, it is difficult to avoid that some soil samples adhere to the quantitative device during the sampling process, which leads to cross-contamination of samples during the sampling process, thereby affecting the accuracy of soil sampling and subsequent detection.

[0003] Therefore, it is necessary to design a quantitative non-disturbance soil sampling device that is easy to use, can improve sampling efficiency, can sample multiple points simultaneously, has low cost, and is disposable. Summary of the invention

[0004] In order to solve the above technical problems, the utility model proposes a quantitative non-disturbance soil sampling device, which overcomes the shortcomings of the existing soil sampler, such as complicated quantitative process steps and low sampling efficiency. It has a simple structure and is easy to use, effectively improves the soil sampling efficiency, and has low production and use costs, reduces the soil detection cost, and has strong practicality.

[0005] The technical solution of the utility model is:

[0006] The utility model provides a quantitative non-disturbance soil sampling device, comprising a sampling tube and a push plug that are movably sleeved, and also a quantitative component, wherein:

[0007] The quantitative assembly includes a connecting rod and a plurality of quantitative blocks arranged at intervals on the connecting rod;

[0008] The connecting rod is arranged in parallel with the sampling cylinder and the push plug, and the upper end of the connecting rod is rotatably arranged on the push plug;

[0009] The sampling tube is provided with a supporting outer edge fixedly connected thereto, and the supporting outer edge is provided with a quantitative through hole adapted to the connecting rod and the quantitative block, so that the quantitative block and the connecting rod can move up and down through the quantitative through hole to complete the quantitative measurement;

[0010] The distance between adjacent quantitative blocks is not less than the thickness of the supporting outer edge, so that after the connecting rod is rotated, the quantitative blocks can be fixed and limited by the supporting outer edge to facilitate sampling.

[0011] Preferably, the quantitative components and the quantitative through holes are both provided in plurality and are evenly spaced along the circumferential direction.

[0012] Preferably, the diameter of the outer wall at the lower end of the sampling cylinder gradually decreases from top to bottom.

[0013] Preferably, the upper end of the push plug is provided with a pressing plate and a supporting plate connected to each other, the pressing plate is arranged above the supporting plate, and the connecting rod is rotatably arranged below the supporting plate and vertically connected thereto.

[0014] Preferably, a limiting end is provided at the lower end of the connecting rod.

[0015] Preferably, the supporting outer edge is an annular support plate coaxially arranged with the sampling tube, and the supporting outer edge and the sampling tube are an integrated structure.

[0016] Preferably, the lower end of the sampling cylinder is provided with a sealing cover which is detachably connected thereto.

[0017] Compared with the prior art, the utility model has the following advantages and effects:

[0018] (1) A quantitative component is used which is rotatably connected to the push plug and is movably connected to the sampling tube. The push plug drives the quantitative component to move up and down to quickly and conveniently change the sampling quantity, and the connecting rod of the quantitative component is rotated to achieve the top fixation, thereby completing quantitative soil sampling. There is no need to repeatedly and tediously place the sampling tube in the quantitative device for quantitative measurement, and sampling can be performed at multiple points simultaneously, thereby improving the soil sampling efficiency.

[0019] (2) Multiple quantitative blocks are set at intervals to achieve quantitative setting of different sampling amounts, thereby improving the applicability and practicality of the overall device. At the same time, sampling quantities adapted to different sampling soil textures can be set to improve the accuracy of quantitative sampling and avoid repeated sampling;

[0020] (3) The outer edge of the support is provided with a quantitative through hole. During the rotation of the connecting rod of the quantitative component, when the quantitative block rotates to the quantitative through hole, the connecting rod can be moved up and down, thereby changing the relative position of the push plug and the sampling tube to change the sampling quantity. When the quantitative quantity is completed, the connecting rod is rotated to make the quantitative block deviate from the quantitative through hole. At this time, the quantitative block and the outer edge of the support are abutted and cannot move up and down, thereby achieving a fixed position, which is convenient for subsequent insertion into the soil for sampling. The operation is simple and easy to use. In addition, since a single device is only used for sampling at a single sampling point, cross contamination of samples can be effectively avoided, thereby improving the accuracy and reliability of sampling. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of a non-disturbance soil sampler in the prior art;

[0022] Figure 2 This is a schematic diagram of the structure of the quantitative non-disturbance soil sampling device in Example 1 of the utility model;

[0023] Figure 3 This is a schematic diagram of the structure of the sampling tube in the quantitative non-disturbance soil sampling device in Example 1 of the utility model;

[0024] Figure 4 This is a schematic diagram of the structure of the push plug and quantitative components in the quantitative non-disturbance soil sampling device in Example 1 of the utility model;

[0025] Figure 5 This is a schematic diagram of the structure of the quantitative non-disturbance soil sampling device in Example 1 of the utility model when adjusting the quantitative state;

[0026] Figure 6 This is a schematic diagram of the structure of the quantitative non-disturbance soil sampling device in the sampling state in Example 1 of the utility model;

[0027] Figure 7 This is a schematic diagram of the structure of the quantitative non-disturbance soil sampling device in Example 2 of the utility model.

[0028] Figure numerals: 1-sampling cylinder, 11-supporting outer edge, 12-quantitative through hole, 2-push plug, 21-pressing plate, 22-carrying plate, 3-quantitative component, 31-connecting rod, 32-quantitative block, 4-limiting end, 5-cover. DETAILED DESCRIPTION

[0029] In order to enable those skilled in the art to better understand the present invention, the present invention is now further described in conjunction with specific implementation methods.

[0030] Embodiment 1:

[0031] like Figure 2~Figure 6As shown, the utility model provides a quantitative non-disturbance soil sampling device, comprising a sampling tube 1 and a push plug 2 that are movably connected, and a quantitative component 3, wherein, as shown in FIG. Figure 2 and Figure 4 As shown, the quantitative component 3 includes a connecting rod 31, and a plurality of quantitative blocks 32 arranged at intervals on the connecting rod 31. Specifically, in this embodiment, eight quantitative blocks 32 are arranged at intervals, and the length of the quantitative block 32 is specifically set according to the quantitative quantity of the sampling space formed by the push plug 2 and the bottom end of the sampling tube 1, which is specifically based on EPA SW-846 Method 5035A Closed System Purification, Capture and Extraction of Volatile Organic Compounds in Soil and Waste, and HJ1019-2019 Technical Guidelines for Sampling Volatile Organic Compounds in Soil and Groundwater of Plots. Specifically, the quantitative blocks between the eight adjacent quantitative blocks 32 form a sampling quantity of 5g, 10g, and 13g from top to bottom, and 5g and 10g are both provided with three sampling quantities set for different soil textures, which are H corresponding to dense clay, M corresponding to other soils, and L corresponding to sandy soil from top to bottom. It should be noted that the size of the quantitative block 32 in the figure and the interval between the quantitative blocks 32 are only for illustrative purposes and should not be regarded as actual limited dimensions.

[0032] like Figure 2 and Figure 4 As shown, the connecting rod 31 is arranged parallel to the sampling tube 1 and the push plug 2, and the upper end of the connecting rod 31 is rotatably arranged on the push plug 2. It moves up and down synchronously with the push plug 2 and cannot move up and down relative to the push plug 2, thereby ensuring that the connecting rod 31 is moved up and down by pressing the push plug 2, thereby changing the sampling quantity.

[0033] like Figure 3 As shown, the sampling tube 1 is provided with a supporting outer edge 11 fixedly connected thereto. Specifically, the supporting outer edge 11 is an annular support plate coaxially arranged with the sampling tube 1, and it is an integral structure with the sampling tube 1. The supporting outer edge 11 is provided with a quantitative through hole 12 adapted to the connecting rod 31 and the quantitative block 32, so that when the connecting rod 31 is rotated to drive the quantitative block 32 to rotate, when the quantitative block 32 is directly opposite to the quantitative through hole 12, the quantitative block 32 and the connecting rod 31 can pass through the quantitative through hole 12 and move up and down to complete the change of the sampling quantitative quantity, refer to Figure 2 and Figure 5 When the quantitative measurement is completed, the connecting rod 31 is rotated so that the quantitative block 32 deviates from the quantitative through hole 12, and the quantitative block 32 abuts against the upper and lower end surfaces of the outer edge 11 of the support. The quantitative block 32 and the connecting rod 31 cannot move up and down relative to the outer edge 11 of the support. At this time, the position of the push plug 2 and the sampling tube 1 is relatively fixed to achieve quantitative sampling. Figure 6 .

[0034] The distance between adjacent quantitative blocks 32 is equal to the thickness of the supporting outer edge 11. After the connecting rod 31 is rotated to cause the quantitative block 32 and the quantitative through hole 12 to deviate and shift, the upper quantitative block 32 and the upper end surface of the supporting outer edge 11, and the lower quantitative block 32 and the lower end surface of the supporting outer edge 11 can better fit and abut each other, so as to achieve the fixed positioning of the quantitative block 32 and facilitate sampling.

[0035] The diameter of the outer wall at the lower end of the sampling tube 1 gradually decreases from top to bottom, that is, the outer wall at the lower end of the sampling tube 1 is inclined inwardly and the thickness gradually decreases, forming a sharp blade to facilitate insertion into the soil sample for sampling.

[0036] The upper end of the push plug 2 is provided with a pressing plate 21 and a supporting plate 22 connected to each other. The pressing plate 21 is arranged above the supporting plate 22, and the connecting rod 31 is rotatably arranged below the supporting plate 22 and vertically connected thereto. The pressing plate 21 can effectively prevent the operator from touching the connecting rod 31 during the process of pressing and inserting the soil sample, thereby preventing the operator from accidentally touching the connecting rod 31 and causing its rotation to affect the relative fixation of the push plug 2 and the sampling tube 1.

[0037] A limit end 4 is provided at the lower end of the connecting rod 31 to avoid the detachment phenomenon caused by excessive upward pulling of the push plug 2, thereby improving the stability and reliability of use.

[0038] The lower end of the sampling tube 1 is provided with a sealing cover 5 which is detachably connected thereto.

[0039] Embodiment 2:

[0040] For Example 2 of the utility model, Figure 7 Note that description of parts that are not different from those in Embodiment 1 will be omitted and will be given the same reference numerals.

[0041] like Figure 7 As shown, the utility model relates to a quantitative non-disturbance soil sampling device, wherein two quantitative components 3 and two quantitative through holes 12 are each provided, and the connecting rods 31 of the two quantitative components 3 and the two quantitative through holes 12 are evenly spaced along the circumferential direction. Specifically, the two quantitative through holes 12 are symmetrically arranged about the axis of the sampling tube 1 to avoid the phenomenon that the entire soil sampling device is tilted when inserted into the soil sample by pressing the push plug 2, thereby ensuring the stability and reliability of sampling.

[0042] In summary, the quantitative non-disturbance soil sampling device provided by the utility model overcomes the shortcomings of the existing soil samplers, such as complicated quantitative process steps and low sampling efficiency. It has a simple structure and is easy to use, effectively improves the soil sampling efficiency, and has low production and use costs, reduces soil detection costs, and is highly practical.

[0043] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent changes and modifications made within the scope of the present invention should still fall within the scope of the present invention.

Claims

1. A quantitative non-disturbance soil sampling device, comprising a sampling tube (1) and a push plug (2) that are movably connected, characterized in that: Also included is a quantitative component (3), wherein: The quantitative component (3) comprises a connecting rod (31) and a plurality of quantitative blocks (32) arranged at intervals on the connecting rod (31); The connecting rod (31) is arranged in parallel with the sampling cylinder (1) and the push plug (2), and the upper end of the connecting rod (31) is rotatably arranged on the push plug (2); The sampling cylinder (1) is provided with a supporting outer edge (11) fixedly connected thereto, and the supporting outer edge (11) is provided with a quantitative through hole (12) adapted to the connecting rod (31) and the quantitative block (32), so that the quantitative block (32) and the connecting rod (31) can pass through the quantitative through hole (12) and move up and down to complete quantitative determination; The distance between adjacent quantitative blocks (32) is not less than the thickness of the supporting outer edge (11), so that after the connecting rod (31) is rotated, the quantitative blocks (32) can be fixed and limited by the supporting outer edge (11) to facilitate sampling.

2. The quantitative non-disturbance soil sampling device according to claim 1, characterized in that: The quantitative components (3) and the quantitative through holes (12) are both provided in plurality and are evenly spaced along the circumferential direction.

3. The quantitative non-disturbance soil sampling device according to claim 1, characterized in that: The diameter of the outer wall of the lower end of the sampling cylinder (1) gradually decreases from top to bottom.

4. The quantitative non-disturbance soil sampling device according to claim 1, characterized in that: The upper end of the push plug (2) is provided with a pressing plate (21) and a supporting plate (22) connected to each other, the pressing plate (21) is arranged above the supporting plate (22), and the connecting rod (31) is rotatably arranged below the supporting plate (22) and vertically connected thereto.

5. The quantitative non-disturbance soil sampling device according to claim 1, characterized in that: A limiting end (4) is provided at the lower end of the connecting rod (31).

6. The quantitative non-disturbance soil sampling device according to claim 1, characterized in that: The supporting outer edge (11) is an annular support plate coaxially arranged with the sampling tube (1); the supporting outer edge (11) and the sampling tube (1) are an integrated structure.

7. The quantitative non-disturbance soil sampling device according to claim 1, characterized in that: The lower end of the sampling cylinder (1) is provided with a sealing cover (5) which is detachably connected thereto.

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