Soil volatile substance sampling and storing container

Abstract

The utility model relates to the technical field of environmental science and engineering, and discloses a soil volatile substance sampling and storing container which comprises a bottle body, the top of the bottle body is in threaded connection with a top cover, the inner wall of the top of the top cover is fixedly connected with a connecting ring, the inner wall of the top of the top cover is fixedly connected with a connecting ring, the inner part of the bottle body is provided with a connecting groove, and the connecting groove is communicated with the connecting ring. A memory alloy spring sealing ring is fixedly connected to the inner wall of the bottom of the connecting groove, a connecting groove is formed in the bottle body, a plurality of reset springs are fixedly connected to the inner wall of the bottom of the connecting groove, and a supporting ring is fixedly connected to the tops of the reset springs. According to the utility model, the mechanical deformation and dynamic pressure self-adaptive composite sealing effect is realized, the barrier property of the container to volatile substances is obviously improved, the double-layer sealing design can synchronously adapt to thermal expansion and cold contraction caused by temperature change, and the leakage risk caused by environmental fluctuation is reduced.

Description

Technical Field

[0001] This utility model relates to the field of environmental science and engineering technology, and in particular to a container for sampling and preserving volatile substances in soil. Background Technology

[0002] Soil volatile substance sampling and preservation containers are usually well-sealed containers, such as headspace bottles or threaded glass bottles, to prevent the volatile components from escaping. The container material must be chemically stable to avoid reacting with the sample and affecting the test results. Generally, it needs to be cleaned and sterilized in advance to ensure cleanliness and no contamination. When using, it must be filled with the sample without leaving a headspace.

[0003] Soil volatile substance sampling and preservation containers utilize the container's high airtightness to form a closed space, preventing soil volatile substances from diffusing into the external environment. Through the stable and inert material properties, they avoid chemical reactions with the sample, maintaining the unchanged composition of volatile substances. During sampling, the container is filled with the sample and the headspace is emptied, reducing the influence of the gas phase space on the adsorption or dilution of volatile components.

[0004] In existing technologies, some soil volatile substance sampling and preservation containers use a single sealing method of rubber sealing rings or threaded tightening. The rubber material is prone to elastic fatigue due to temperature changes (such as swelling at high temperatures and hardening at low temperatures) or long-term use, resulting in gaps and leakage, and the release of volatile substances. Therefore, a soil volatile substance sampling and preservation container is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above deficiencies, this utility model provides a soil volatile substance sampling and preservation container, which aims to improve the problem of volatile substance escape in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A soil volatile substance sampling and preservation container includes a bottle body. A top cap is threadedly connected to the top of the bottle body. A connecting ring is fixedly connected to the inner wall of the top of the top cap. A connecting ring is fixedly connected to the inner wall of the top of the top cap. A connecting groove is formed inside the bottle body. A shape memory alloy spring sealing ring is fixedly connected to the inner wall of the bottom of the connecting groove. A connecting groove is formed inside the bottle body. Multiple return springs are fixedly connected to the inner wall of the bottom of the connecting groove. A support ring is fixedly connected to the top of the multiple return springs. A sealing ring is fixedly connected to the top of the support ring. A portable component is fixedly connected to the inner wall of the bottle body.

[0008] As a further description of the above technical solution:

[0009] The portable component includes a fixing block, which is externally fixedly connected to the inner wall of the bottle. The inner wall of the fixing block is detachably connected to a placement box, which has multiple through holes and a slow-release layer on its inner wall.

[0010] As a further description of the above technical solution:

[0011] The fixing block has two slots inside, and L-shaped blocks are rotatably connected to the left and right sides of the placement box respectively;

[0012] As a further description of the above technical solution:

[0013] The outer side of the connecting ring is slidably connected to the inner wall of the connecting groove, and the bottom of the connecting ring is in contact with the top of the shape memory alloy spring sealing ring;

[0014] As a further description of the above technical solution:

[0015] The outer part of the connecting ring is slidably connected to the inside of the connecting groove, and the bottom of the connecting ring is in contact with the top of the sealing ring;

[0016] As a further description of the above technical solution:

[0017] The outer side of the support ring is slidably connected to the inner wall of the connecting groove, and the outer side of the L-shaped block is slidably connected to the inside of the slot.

[0018] As a further description of the above technical solution:

[0019] The outer surface of the L-shaped block is in contact with the inner wall of the fixed block, and the material of the slow-release layer is borosilicate porous glass;

[0020] As a further description of the above technical solution:

[0021] The shape memory alloy spring seal ring is deformed by the elastic force from the connecting ring and the return spring, and the shape memory alloy spring seal ring is squeezed by the connecting ring and deformed and sealed by its own elasticity.

[0022] This utility model has the following beneficial effects:

[0023] 1. In this utility model, tightening the top cover causes the connecting ring and the connecting ring to move downwards. The connecting ring compresses the shape memory alloy spring sealing ring, causing it to undergo reversible elastic deformation. The sealing ring tightly fits the inner wall of the connecting groove through deformation. The connecting ring compresses the sealing ring, and the sealing ring deforms with the elastic support of the spring while being compressed, filling the inner wall of the connecting groove. This achieves a composite sealing effect of mechanical deformation and dynamic pressure self-adaptation, significantly improving the container's barrier performance against volatile substances. The double-layer sealing design can simultaneously adapt to thermal expansion and contraction caused by temperature changes, reducing the risk of leakage caused by environmental fluctuations.

[0024] 2. In this utility model, by rotating the L-shaped blocks on both sides of the placement box to disengage it from the slot, the placement box can be pulled out from the fixed block. The placement box loaded with the new slow-release layer is then aligned with the fixed block and inserted. After the L-shaped block slides into the slot, it is rotated to lock into the inner wall of the fixed block to complete the limiting and fixing, thereby greatly improving the replacement efficiency. The modular design allows the slow-release layer to be flexibly replaced according to different sampling needs, meeting diverse impurity adsorption scenarios and enhancing the functional adaptability of the container. Attached Figure Description

[0025] Figure 1 This is a three-dimensional schematic diagram of the soil volatile matter sampling and preservation container proposed in this utility model;

[0026] Figure 2 This is a schematic diagram of the top cover of the soil volatile matter sampling and preservation container proposed in this utility model;

[0027] Figure 3 This is a schematic diagram of the placement box of the soil volatile matter sampling and preservation container proposed in this utility model;

[0028] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0029] Figure 5 This is a schematic diagram of the L-shaped block of the soil volatile matter sampling and preservation container proposed in this utility model.

[0030] Legend:

[0031] 1. Bottle body; 2. Top cap; 3. Connecting ring; 4. Connecting ring; 5. Connecting groove; 6. Memory alloy spring sealing ring; 7. Connecting groove; 8. Spring; 9. Support ring; 10. Sealing ring; 11. Fixing block; 12. Placement box; 13. Through hole; 14. Slow-release layer; 15. Slot; 16. L-shaped block. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] Reference Figures 1 to 3 This utility model provides an embodiment of a soil volatile substance sampling and preservation container, including a bottle body 1. The bottle body 1 provides space and protection for the soil inside. A top cover 2 is threadedly connected to the top of the bottle body 1. The top cover 2 can protect and shield the device to prevent sudden leakage of volatile substances. A connecting ring 3 is fixedly connected to the inner wall of the top of the top cover 2. When the top cover 2 is closed, the connecting ring 3 can be engaged in the interior of the connecting groove 5 to compress the memory alloy spring sealing ring 6. A connecting ring 4 is fixedly connected to the inner wall of the top of the top of the top cover 2. At the same time, when the top cover 2 is closed, the connecting ring 4 is driven to engage in the interior of the connecting groove 7 to compress the sealing ring 10.

[0034] Reference Figure 3 and Figure 4 The bottle body 1 has a connecting groove 5 inside, which provides fixation and support for the shape memory alloy spring sealing ring 6. The shape memory alloy spring sealing ring 6 is fixedly connected to the bottom inner wall of the connecting groove 5. When the shape memory alloy spring sealing ring 6 is squeezed by the connecting ring 3, it can reversibly elastically deform, adapting to the inner wall of the connecting groove 5 through deformation and filling the tiny gaps. The bottle body 1 also has a connecting groove 7 inside, which provides fixation and support for the return spring 8. Multiple return springs 8 are fixedly connected to the bottom inner wall of the connecting groove 7. The return springs 8 have an elastic function, providing elastic support for their support ring 9 and sealing ring 10. The top of the multiple return springs 8 is fixedly connected to the support ring 9, which provides fixation and support for the sealing ring 10. The top of the support ring 9 is fixedly connected to the sealing ring 10. When the sealing ring 10 is squeezed by the connecting ring 4, it can deform through the elastic support of the return spring 8, thereby filling the inner wall of the connecting groove 7 and forming a second seal. A portable component is fixedly connected to the inner wall of the bottle body 1.

[0035] Reference Figure 3 and Figure 5The portable component includes a fixing block 11. The bottle body 1 provides fixation and support for the fixing block 11. The fixing block 11 is externally fixedly connected to the inner wall of the bottle body 1. The bottle body 1 provides fixation and support for the fixing block 11. The inner wall of the fixing block 11 is detachably connected to a placement box 12. The placement box 12 provides space for opening through holes 13. The interior of the placement box 12 has multiple through holes 13. The slow-release layer 14 can be used to adsorb impurities through the through holes 13. The inner wall of the placement box 12 is provided with a slow-release layer 14, which can adsorb impurities emitted from the soil. The interior of the fixing block 11 has two slots 15. When the slots 15 are used to place the placement box 12, the L-shaped block 16 is inserted into the inner wall of the slot 15 and slides down. The left and right sides of the placement box 12 are respectively rotatably connected to L-shaped blocks 16. After the placement box 12 is placed in place, the L-shaped block 16 can be inserted into the corresponding groove of the fixing block 11 to complete the limiting and fixing of the placement box 12.

[0036] Reference Figure 2 , Figure 3 and Figure 5 The outer side of the connecting ring 3 is slidably connected to the inner wall of the connecting groove 5. The connecting groove 5 provides a limiting and guiding function for the connecting ring 3. The bottom of the connecting ring 3 is in contact with the top of the shape memory alloy spring sealing ring 6. The connecting ring 3 can squeeze the shape memory alloy spring sealing ring 6 when the top cover 2 is closed. The outer side of the connecting ring 4 is slidably connected to the inside of the connecting groove 7. The connecting groove 7 provides a limiting and guiding function for the connecting ring 4. The bottom of the connecting ring 4 is in contact with the top of the sealing ring 10. The connecting ring 4 can squeeze the sealing ring 10. The outer side of the support ring 9 is slidably connected to the inner wall of the connecting groove 7. The connecting groove 7 provides a limiting and guiding function for the support ring 9.

[0037] The L-shaped block 16 is externally slidably connected to the inside of the slot 15. When the placement box 12 is placed, the slot 15 can provide limiting and support for the L-shaped block 16. The outside of the L-shaped block 16 is in contact with the inner wall of the fixing block 11. After the placement box 12 is placed in place, the L-shaped block 16 is rotated to lock into the corresponding fixing block 11, thereby completing the limiting and fixing of the placement box 12. The material of the slow-release layer 14 is alumina ceramic. Alumina ceramic is resistant to acid and alkali corrosion, has strong surface inertness, high temperature resistance and impact resistance, and is suitable for long-term storage in complex environments. The sealing ring 10 is subjected to... The sealing ring 10 deforms under the elastic force of the connecting ring 4 and the return spring 8. Similarly, when it is squeezed by the connecting ring 4, the sealing ring 10 can deform under the elastic support of the return spring 8, thereby filling the inner wall of the connecting groove 7 and forming a second seal. The shape memory alloy spring sealing ring 6 is squeezed by the connecting ring 3 and deforms and seals through its own elasticity. Similarly, when the shape memory alloy spring sealing ring 6 is squeezed by the connecting ring 3, it can reversibly elastically deform and adapt to the inner wall of the connecting groove 5 to fill the tiny gaps.

[0038] Working principle: During use, tightening the top cover 2 moves the connecting ring 3 and the connecting ring 4 downwards. The connecting ring 3 compresses the shape memory alloy spring sealing ring 6, causing it to undergo reversible elastic deformation. The sealing ring, through deformation, tightly fits the inner wall of the connecting groove 5, filling the tiny gaps and forming the first seal. At the same time, the connecting ring 4 compresses the sealing ring 10. The sealing ring 10, while being compressed, deforms with the elastic support of the return spring 8, filling the inner wall of the connecting groove 7 and forming the second seal. The double sealing structure effectively prevents the leakage of volatile substances in the soil through the synergistic effect of mechanical compression and elastic deformation.

[0039] When the sustained-release layer 14 needs to be replaced, the L-shaped blocks 16 on both sides of the placement box 12 are rotated to disengage it from the slot 15, and then the placement box 12 can be pulled out from the fixing block 11 to complete the removal of the old sustained-release layer 14. When replacing it, the placement box 12 containing the new sustained-release layer 14 is aligned with the fixing block 11 and inserted. After the L-shaped block 16 slides into the slot 15, the L-shaped block 16 is rotated to lock into the inner wall of the fixing block 11 to complete the limiting and fixing. Through the locking and linkage structure between the L-shaped block 16 and the slot 15, the sustained-release layer 14 can be easily removed and replaced, meeting the flexible adjustment needs of the impurity adsorption function under different sampling scenarios.

[0040] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A soil volatile matter sampling and preservation container, comprising a bottle body (1), characterized in that: The top of the bottle body (1) is threadedly connected to a top cap (2). A connecting ring (3) is fixedly connected to the inner top wall of the top cap (2). A connecting ring (4) is fixedly connected to the inner top wall of the top cap (2). A connecting groove (5) is opened inside the bottle body (1). A memory alloy spring sealing ring (6) is fixedly connected to the inner bottom wall of the connecting groove (5). A connecting groove (7) is opened inside the bottle body (1). A plurality of return springs (8) are fixedly connected to the inner bottom wall of the connecting groove (7). A support ring (9) is fixedly connected to the top of the plurality of return springs (8). A sealing ring (10) is fixedly connected to the top of the support ring (9). A portable component is fixedly connected to the inner wall of the bottle body (1).

2. The soil volatile matter sampling and preservation container according to claim 1, characterized in that: The portable component includes a fixing block (11), which is fixedly connected to the inner wall of the bottle body (1). The inner wall of the fixing block (11) is detachably connected to a placement box (12). The placement box (12) has multiple through holes (13) inside and a slow-release layer (14) is provided on the inner wall of the placement box (12).

3. The soil volatile matter sampling and preservation container according to claim 2, characterized in that: The fixed block (11) has two slots (15) inside, and the left and right sides of the placement box (12) are respectively rotatably connected to L-shaped blocks (16).

4. The soil volatile matter sampling and preservation container according to claim 1, characterized in that: The outer side of the connecting ring (3) is slidably connected to the inner wall of the connecting groove (5), and the bottom of the connecting ring (3) is in contact with the top of the memory alloy spring sealing ring (6).

5. The soil volatile matter sampling and preservation container according to claim 1, characterized in that: The outer side of the connecting ring (4) is slidably connected to the inside of the connecting groove (7), and the bottom of the connecting ring (4) is in contact with the top of the sealing ring (10).

6. The soil volatile matter sampling and preservation container according to claim 3, characterized in that: The support ring (9) is externally slidably connected to the inner wall of the connecting groove (7), and the L-shaped block (16) is externally slidably connected to the inside of the slot (15).

7. The soil volatile matter sampling and preservation container according to claim 3, characterized in that: The exterior of the L-shaped block (16) is in contact with the inner wall of the fixing block (11), and the material of the slow-release layer (14) is borosilicate porous glass.

8. The soil volatile matter sampling and preservation container according to claim 1, characterized in that: The shape memory alloy spring sealing ring (6) is deformed by the elastic force from the connecting ring (4) and the return spring (8), and the shape memory alloy spring sealing ring (6) is squeezed by the connecting ring (3) and deformed and sealed by its own elasticity.

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