A soil volatile organic matter sampler

Abstract

The utility model relates to a kind of soil volatile organic compound samplers, including sampling cylinder and the handle structure that can be separated with sampling cylinder:The handle structure includes the positioning part and the butt joint part of integrated connection, lifting slide is opened in the side of butt joint part away from positioning part, multiple linear distribution positioning cavity one and positioning cavity two are opened in lower butt joint part, and positioning cavity one and positioning cavity two are staggered and set in the two sides of lifting slide.When the positioning strip is adjusted to positioning cavity one or positioning cavity two, it is directly inserted into the soil volatile organic compound sampler, and the top wall in the positioning part is contacted by the advancing piece, which means that the sampling amount meets the standard, and the sampling method that meets the needs of different sampling amounts can be satisfied. The positioning cavity one and the positioning cavity two are staggered and set on the two sides of the lifting slide, which can ensure that there is sufficient wall thickness between the two adjacent positioning cavities one or the two adjacent positioning cavities two to prevent deformation.

Description

Technical Field

[0001] This utility model relates to the technical field of soil sampling tools, specifically a soil volatile organic compound sampler. Background Technology

[0002] Volatile organic compounds in soil, abbreviated as VOCs, refer to organic compounds with a boiling point of 260°C or less, or a saturated vapor pressure of more than 133.322 Pa at 20°C and 1 atmosphere. Common volatile organic pollutants that are harmful to human health include volatile halogenated hydrocarbons, benzene series compounds, and chlorobenzenes.

[0003] When the quantity and rate of VOCs entering the soil exceed the soil's carrying capacity and purification rate, the soil's properties, composition, and characteristics will change, causing the accumulation of pollutants to gradually become dominant. This will affect crop growth, damage vegetation, and seriously endanger human health. Therefore, the detection of volatile organic compounds (VOCs) in soil plays an important role in pollution prevention and control.

[0004] To ensure the accuracy and comparability of experimental data, it is often necessary to collect samples according to specific mass or volume. The required sampling amount varies depending on the method used for different types of samples. However, if soil is directly excavated for sampling and then weighed and sealed to ensure relatively accurate sampling, the soil is turned over and exposed to the air during this process, which increases the surface area of ​​soil particles in contact with the air. This makes it easier for VOCs that were originally adsorbed or dissolved in the soil to volatilize into the atmosphere, resulting in inaccurate sampling results. Therefore, a soil volatile organic compound sampler is proposed. Utility Model Content

[0005] Based on the above description, this utility model provides a soil volatile organic compound sampler that allows for direct insertion and non-stirring sampling, eliminating the need for soil turning and weighing, thus avoiding soil exposure. In addition, it allows for adjustable sampling volume and facilitates relatively accurate sampling, solving the technical problems pointed out in the background art above.

[0006] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A soil volatile organic compound sampler, comprising a sampling tube and a handle structure that can be separated from the sampling tube:

[0007] The handle structure includes an integrally connected positioning part and a docking part. A lifting slide is provided on the side of the docking part away from the positioning part. Multiple positioning cavities one and two are linearly distributed in the lower docking part. Positioning cavities one and two are staggered on both sides of the lifting slide.

[0008] The sampling tube includes an outer cylinder, a pusher is slidably connected to the inner side of the outer cylinder, and a positioning strip is provided on the outer side of the outer cylinder. The positioning strip is slidably connected to the positioning part through a lifting slide. When the positioning strip is flush with positioning cavity one or positioning cavity two, the positioning strip can slide into positioning cavity one or positioning cavity two through a rotation action.

[0009] Based on the above technical solution, the present invention can be further improved as follows.

[0010] Furthermore, both positioning cavity one and positioning cavity two have an installation opening extending from the side near the positioning part, and a positioning spring is provided in the installation opening.

[0011] Furthermore, the side of the lifting slide away from the positioning part is the initial inlet, and a guide flare is provided at this initial inlet.

[0012] Furthermore, the positioning cavity one and positioning cavity two are provided with a guide flare two on the side near the lifting slide.

[0013] Furthermore, both the number of positioning strips and the number of lifting slides are two sets, and the two sets of positioning strips are symmetrically distributed on the outside of the outer cylinder.

[0014] Furthermore, the positioning part is provided with a handle on the side away from the docking part. The handle is composed of a cylinder and a dome, with the dome fixed between the positioning part and the dome.

[0015] Furthermore, the propulsion component includes a piston adapted to slide within the receiving outer cylinder, and a propulsion handle is integrally connected to the piston.

[0016] Furthermore, the sampling tube and handle structure are made of stainless steel or Teflon.

[0017] Compared with the prior art, the technical solution of this application has the following beneficial technical effects:

[0018] 1. The soil volatile organic compound sampler is designed with a positioning cavity one and a positioning cavity two for positioning. When the positioning strip is adjusted to the positioning cavity one or the positioning cavity two, it is directly inserted into the soil volatile organic compound sampler. The pusher abutting against the inner top wall of the positioning part indicates that the sampling amount is relatively up to standard. In this way, it can meet the sampling methods that require different sampling amounts and ensure that the sampling is relatively accurate.

[0019] 2. The soil volatile organic compound sampler has positioning chamber one and positioning chamber two staggered on both sides of the lifting slide, which can ensure that there is sufficient wall thickness between two sets of adjacent positioning chamber one or two sets of adjacent positioning chamber two to prevent deformation. Attached Figure Description

[0020] Figure 1A schematic diagram of the structure of a soil volatile organic compound sampler provided for an embodiment of this utility model;

[0021] Figure 2 for Figure 1 A schematic diagram of the structure when the sampling tube is separated from the handle;

[0022] Figure 3 This is a half-sectional view of the sampling tube in an embodiment of the present invention;

[0023] Figure 4 This is a schematic diagram of the handle structure in an embodiment of the present utility model;

[0024] Figure 5 This is a schematic diagram of the positioning spring and its connecting structure in an embodiment of this utility model.

[0025] The attached diagram lists the components represented by each number as follows:

[0026] 1. Sampling tube; 11. Outer cylinder; 12. Positioning strip; 13. Propulsion component; 2. Handle structure; 21. Positioning part; 211. Handle; 22. Docking part; 23. Lifting slide; 24. Positioning cavity one; 25. Positioning cavity two; 26. Mounting port; 27. Positioning spring; 28. Guide flare one; 29. ​​Guide flare two. Detailed Implementation

[0027] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0028] like Figure 1-5 As shown, a soil volatile organic compound sampler in this embodiment includes a sampling tube 1 and a handle structure 2 that can be separated from the sampling tube 1. This makes it easy to clean and carry later. The sampling tube 1 is used to complete the sampling of the soil, while the handle structure 2 is used to provide a positioning reference for the sampling tube 1 and to provide connection methods for different sampling amounts.

[0029] First, such as Figure 2 and 4As shown in the figure, the handle structure 2 in this embodiment includes an integrally connected positioning part 21 and a docking part 22. In this case, the positioning part 21 is integrally fixed to the top of the docking part 22. On the side of the docking part 22 away from the positioning part 21, a lifting slide 23 extending linearly toward the positioning part 21 is provided. Multiple linearly distributed positioning cavities 1 24 and 25 are provided in the lower docking part 22, with the linear distribution direction from bottom to top. The positioning cavities 1 24 and 25 are staggered on both sides of the lifting slide 23. In this way, it can be ensured that there is sufficient wall thickness between two sets of adjacent positioning cavities 1 24 or two sets of adjacent positioning cavities 25 to prevent deformation. At this time, both positioning cavities 1 24 and 25 are directly connected to the lifting slide 23, providing support for the subsequent rotational adjustment of the sampling tube 1.

[0030] It should be noted that both the positioning part 21 and the docking part 22 are hollow structures, so as to... Figure 4 For illustrative purposes, the docking part 22 is hollow from top to bottom, and the positioning part 21 is hollow from front to back. At this time, the positioning part 21 has a left side wall, a right side wall, and an inner top wall. The inner top wall is used for subsequent positioning. A handle 211 is provided on the side of the positioning part 21 away from the docking part 22. The handle 211 is composed of a cylinder and a dome. The dome is fixed between the positioning part 21 and the dome.

[0031] And such Figure 1-3 As shown, the sampling tube 1 includes an outer cylinder 11. An adjustable pusher 13 is slidably connected to the inner side of the outer cylinder 11. The pusher 13 includes a piston that is adapted to slide within the outer cylinder 11. An integral pusher handle is connected to the piston. The end of the pusher handle away from the piston is located on the outer side of the outer cylinder 11. A positioning strip 12 is provided on the outer side of the outer cylinder 11. This positioning strip 12 is slidably connected to the positioning part 21 through a lifting slide 23. That is, the positioning strip 12 can be adjusted up and down through the lifting slide 23. Furthermore, the width of the positioning strip 12 is equal to the width of the lifting slide 23 to prevent the positioning strip 12 from swaying during the lifting adjustment. In addition, the positioning strip 12, the first positioning cavity 24, and the second positioning cavity 25 have the same height. Since the first positioning cavity 24 and the second positioning cavity 25 are directly connected to the lifting slide 23, when the positioning strip 12 is flush with the first positioning cavity 24 or the second positioning cavity 25, the positioning strip 12 can slide into the first positioning cavity 24 or the second positioning cavity 25 through a rotational action.

[0032] It should be noted that the number of positioning strips 12 and the number of lifting slides 23 are preferably two sets, and the two sets of positioning strips 12 are symmetrically distributed on the outside of the outer cylinder 11 to ensure balance. The bottom of the outer cylinder 11 is provided with a conical opening so as to be inserted into the soil. The sampling cylinder 1 and the handle structure 2 are made of stainless steel or Teflon. Teflon is inert, and stainless steel has good mechanical properties and relatively low adsorption. The materials will not react chemically with VOCs in the soil to avoid contaminating the sample or losing the target compound.

[0033] Under the above design, the instructions for use are as follows: First, determine which positioning cavity 24 or positioning cavity 25 the positioning strip 12 in the sampling tube 1 needs to be adjusted to according to the selected method. After this process is determined, use the lifting space provided by the lifting slide 23 to adjust the positioning strip 12. When the positioning strip 12 is flush with the positioning cavity 24 or positioning cavity 25, the positioning strip 12 slides into the positioning cavity 24 or positioning cavity 25 through rotation. After assembly, directly insert this soil volatile organic compound sampler into the soil. As the soil enters the outer cylinder 11, the soil pushes the piston in the propulsion component 13 to move upward. When the propulsion handle in the propulsion component 13 touches the inner top wall of the positioning part 21, it means that the sampling amount has reached the set value. The sampling amount is relatively accurate, no weighing is required, and no experience is needed when inserting the sampler.

[0034] When adjusting the positioning strip 12, to ensure the operator is aware that the positioning strip 12 is aligned with positioning cavity 24 or positioning cavity 25, such as... Figure 4 and 5 As shown, both positioning cavity 1 24 and positioning cavity 25 have an installation port 26 extending upwards on the side near the positioning part 21. A positioning spring 27 is provided in the installation port 26. Thus, when the sampling tube 1 and the handle structure 2 are combined and the positioning strip 12 is adjusted upwards, when the positioning strip 12 feels the resistance of the positioning spring 27, it means that the positioning strip 12 is relatively flush with positioning cavity 1 24 or positioning cavity 25.

[0035] In addition, the initial inlet is located on the side of the lifting slide 23 away from the positioning part 21. A guide flare 28 is provided at this initial inlet so that the positioning strip 12 can be easily inserted into the lifting slide 23.

[0036] In addition, a guide flare 29 is provided on the side of positioning cavity 1 24 and positioning cavity 25 near the lifting slide 23, so that positioning strip 12 can be easily inserted into positioning cavity 1 24 or positioning cavity 25.

[0037] In summary, when it is necessary to combine the sampling tube 1 with the handle structure 2, the first step is to determine which positioning cavity 24 or positioning cavity 25 the positioning strip 12 in the sampling tube 1 needs to be adjusted to, based on the selected method. After this process is determined, the positioning strip 12 is adjusted by using the lifting space provided by the lifting slide 23 and positioned by the corresponding positioning spring 27. When the positioning strip 12 is flush with the positioning cavity 24 or positioning cavity 25, the positioning strip 12 slides into the positioning cavity 24 or positioning cavity 25 through a rotational motion. After assembly, this soil volatile organic compound sampler is directly inserted into the soil. As the soil enters the outer cylinder 11, the soil pushes the piston in the propulsion component 13 to move upward. When the propulsion handle in the propulsion component 13 touches the inner top wall of the positioning part 21, it indicates that the sampling amount has reached the set value. The sampling amount is relatively accurate, and there is no need to weigh it. Moreover, there is no need to rely on experience to sample when inserting the sampler.

[0038] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A soil volatile organic compound sampler, characterized in that, Includes a sampling tube (1) and a handle structure (2) that can be separated from the sampling tube (1): The handle structure (2) includes an integrally connected positioning part (21) and docking part (22). A lifting slide (23) is provided on the side of the docking part (22) away from the positioning part (21). Multiple positioning cavities 1 (24) and 2 (25) are provided in the lower docking part (22) in a linearly distributed manner. Positioning cavities 1 (24) and 2 (25) are staggered on both sides of the lifting slide (23). The sampling tube (1) includes an outer cylinder (11) for receiving. A pusher (13) is slidably connected to the inner side of the outer cylinder (11). A positioning strip (12) is provided on the outer side of the outer cylinder (11). The positioning strip (12) is slidably connected to the positioning part (21) through the lifting slide (23). When the positioning strip (12) is flush with the first positioning cavity (24) or the second positioning cavity (25), the positioning strip (12) can slide into the first positioning cavity (24) or the second positioning cavity (25) through a rotational action.

2. The soil volatile organic compound sampler according to claim 1, characterized in that: Both the first positioning cavity (24) and the second positioning cavity (25) have an installation port (26) extending from the side near the positioning part (21), and a positioning spring (27) is provided in the installation port (26).

3. A soil volatile organic compound sampler according to claim 2, characterized in that: The side of the lifting slide (23) away from the positioning part (21) is the initial inlet, and a guide flare (28) is provided at this initial inlet.

4. A soil volatile organic compound sampler according to claim 3, characterized in that: The positioning cavity one (24) and positioning cavity two (25) are provided with a guide flare two (29) on the side near the lifting slide (23).

5. A soil volatile organic compound sampler according to any one of claims 1-4, characterized in that: The number of positioning strips (12) and the number of lifting slides (23) are both two sets, and the two sets of positioning strips (12) are symmetrically distributed on the outside of the outer cylinder (11).

6. A soil volatile organic compound sampler according to claim 5, characterized in that: The positioning part (21) is provided with a handle (211) on the side away from the docking part (22). The handle (211) is composed of a cylinder and a dome, with the dome fixed between the positioning part (21) and the dome.

7. A soil volatile organic compound sampler according to claim 1, characterized in that: The propulsion component (13) includes a piston adapted to slide within the receiving outer cylinder (11), and a propulsion handle is integrally connected to the piston.

8. A soil volatile organic compound sampler according to claim 1, characterized in that: The sampling tube (1) and the handle structure (2) are made of stainless steel or Teflon.

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