Sampling device for detecting volatile organic compounds in soil

Abstract

The utility model relates to a sampling device for detecting volatile organic compounds in soil, which comprises a sampling tube and a push rod, the sampling tube comprises an external thread tube body, a fixing plate, a vertical hole, a communication transverse hole and a threaded blind hole; the stress part is in transmission connection with the sampling tube through threads; the air bag part is arranged at the top end of the fixing plate through a fixing nut and communicates with the external threaded pipe body through a vertical hole and a communicating transverse hole, and the air bag part comprises an air bag body and a threaded pipe; the shifting wheel is arranged outside the sampling tube through a screw; the threaded cover is arranged at the top end of the sampling tube; and the pushing block is arranged in the external thread pipe body. According to the soil sampling device, the sampling pipe, the stress piece and other parts are arranged, and through the matching relation between the stress piece and the sampling pipe, the sampling pipe can stretch into soil under the action of the threads, and part of soil is collected into the external thread pipe body in the stretching-in process.

Description

Technical Field

[0001] The utility model relates to a soil sampling device, in particular to a sampling device for detecting volatile organic matter in soil. Background Art

[0002] A soil sampler refers to a tool used to obtain soil samples. Commonly used ones include soil drills, shovels and spades. The soil drill consists of a drill bit and a handle made of hard material (steel or hard plastic). The drill bit is often spiral or cylindrical. The top of the spiral drill bit is a pair of sharp blades that can rotate to cut into the soil. Immediately following the blade is an enlarged soil cavity. As the handle rotates, it drills down into the soil surface and can guide the soil sample of the soil layer to be collected into the cavity.

[0003] In order to facilitate the removal of soil during sampling, traditional soil drill samplers are provided with a push rod, and the sample is removed using the push rod after sampling. This type of sampler is more suitable for sampling ordinary soil, but when sampling soil containing volatile organic matter, since these organic matters are highly volatile, when the volatile organic matters are in the soil, their volatility is hindered and they cannot be directly volatilized, so they can be retained in the soil. During the sampling process, the soil is taken out, the volatile substances are less hindered, and part of the soil is directly exposed to the air, causing these organic matters to volatilize. When the sample is transferred to a container, the organic matters volatilize again, affecting the accuracy of the test results. Therefore, a sampling device for detecting volatile organic matters in soil is proposed to solve the above-mentioned problems. Utility Model Content

[0004] Based on the above description, the utility model provides a sampling device for detecting volatile organic compounds in soil, so as to solve the problem that the existing samplers easily reduce the accuracy of the detection results when sampling soil containing volatile substances.

[0005] The utility model provides a technical solution for solving the above technical problems as follows: a sampling device for detecting volatile organic compounds in soil, comprising: a sampling tube and a push rod, the sampling tube comprising an externally threaded tube body, a fixing plate, a vertical hole, a connecting horizontal hole and a threaded blind hole, the force-bearing member is connected to the sampling tube through a threaded transmission, the airbag member is arranged at the top of the fixing plate through a fixing nut, and is interconnected with the externally threaded tube body through the vertical hole and the connecting horizontal hole, the airbag member comprises an airbag main body and a threaded tube, a toggle wheel is arranged on the outside of the sampling tube through a screw, a threaded cover is arranged on the top of the sampling tube, and a pushing block is arranged inside the externally threaded tube body.

[0006] On the basis of the above technical solution, the present invention can also be improved as follows.

[0007] Furthermore, the inner diameter of the externally threaded tube body is larger than the inner diameter of its bottom end, and a sampling head is provided at the bottom end of the externally threaded tube body, and the sampling head is a hollow frustum block.

[0008] Furthermore, a fixing plate is arranged outside the externally threaded tube body, a vertical hole is arranged at the top end of the fixing plate, and a connecting horizontal hole is arranged inside the fixing plate, and the connecting horizontal hole connects the externally threaded tube body and the vertical hole.

[0009] Furthermore, the outer surface of the externally threaded pipe body is provided with threaded blind holes, the threaded blind holes are distributed in a circular shape and are equidistantly distributed, and the threaded blind holes are arranged above the fixing plate.

[0010] Furthermore, the force-bearing member includes a pedal, and an internally threaded vertical cylinder is provided at the top of the pedal, and the internally threaded vertical cylinder is threadedly connected to the externally threaded pipe body.

[0011] Furthermore, stress rings are provided at both upper and lower ends of the airbag body.

[0012] Furthermore, a threaded tube is provided at the bottom end of the stress-bearing ring below, and the threaded tube is connected to the airbag body.

[0013] Furthermore, the threaded tube passes through the vertical hole, and a connecting side hole is provided on the outer surface of the threaded tube, and the connecting side hole is connected to the connecting horizontal hole.

[0014] Furthermore, a sealing ring is provided between the threaded cover and the sampling tube, and a sealing ring is provided between the fixing nut and the fixing plate.

[0015] Furthermore, the diameter of the pushing block is larger than the inner diameter of the sampling head and smaller than the inner diameter of the top of the externally threaded tube body.

[0016] Compared with the prior art, the technical solution of this application has the following beneficial technical effects:

[0017] 1. The utility model provides a sampling tube and a force-bearing member and other components. Through the matching relationship between the force-bearing member and the sampling tube, the sampling tube can be extended into the soil under the action of the thread, and part of the soil is collected into the interior of the external threaded tube body during the extension process. In this process, the distance between the pushing block and the toggle wheel is reduced after being pushed by the soil;

[0018] 2. By setting the airbag, the effect of collecting volatiles is achieved, so that the sampler can collect gas during sampling to achieve the effect of collecting volatilized organic matter. After the collection and sampling are completed, it can be sealed by means of a threaded cover and a sealing ring to avoid leakage of volatile organic matter. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The structural schematic diagram of a sampling device for detecting soil volatile organic compounds provided by an embodiment of the present utility model;

[0020] Figure 2 is Figure 1 the structural sectional view of;

[0021] Figure 3 is Figure 2 the structural schematic diagram of another perspective of;

[0022] Figure 4 is Figure 3 the partial enlarged schematic diagram of area A in;

[0023] Figure 5 The structural schematic diagram of the sampling tube in an embodiment of the present utility model;

[0024] Figure 6 is Figure 5 the structural sectional view of;

[0025] In the drawings, the list of components represented by each reference numeral is as follows:

[0026] 1. Sampling tube; 11. Outer threaded tube body; 12. Sampling head; 13. Fixed plate; 14. Vertical hole; 15. Communicating transverse hole; 16. Threaded blind hole; 2. Push rod; 3. Force-bearing member; 31. Treadle; 32. Inner threaded vertical cylinder; 4. Airbag member; 41. Airbag main body; 42. Force-bearing ring; 43. Threaded tube; 44. Communicating side hole; 5. Dial wheel; 6. Threaded cover; 7. Push block; 8. Sealing ring; 9. Fixed nut. Detailed implementation manners

[0027] To facilitate the understanding of the present application, the present application will be described more comprehensively below with reference to the relevant drawings. Embodiments of the present application are shown in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the disclosure of the present application more thorough and comprehensive.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present application belongs. The terms used in the specification of the present application herein are only for the purpose of describing specific embodiments and are not intended to limit the present application.

[0029] As used herein, the singular forms "a", "an" and "the" may also include the plural forms unless the context clearly dictates otherwise. It should also be understood that the terms "comprising", "including" or "having", etc. specify the presence of the stated features, integers, steps, operations, components, parts or combinations thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts or combinations thereof.

[0030] Please refer to Figure 1 、 Figures 4 - 6 , a sampling device for detecting soil volatile organic compounds, comprising:

[0031] A sampling tube 1 and a push rod 2, wherein the sampling tube 1 includes an externally threaded tube body 11, a fixing plate 13, a vertical hole 14, a communicating transverse hole 15 and a threaded blind hole 16;

[0032] The inner diameter of the externally threaded tube body 11 is larger than the inner diameter of its bottom end. A sampling head 12 is provided at the bottom end of the externally threaded tube body 11. The sampling head 12 is a hollow frustum block. A fixing plate 13 is provided on the outside of the externally threaded tube body 11. A vertical hole 14 is provided at the top end of the fixing plate 13. A communicating transverse hole 15 is provided inside the fixing plate 13. The communicating transverse hole 15 communicates the externally threaded tube body 11 and the vertical hole 14. Threaded blind holes 16 are provided on the outer surface of the externally threaded tube body 11. The threaded blind holes 16 are distributed at equal intervals in a ring shape. The threaded blind holes 16 are provided above the fixing plate 13;

[0033] Based on the above, the sampling tube 1 and the force-bearing member 3 cooperate with each other. By rotating the sampling tube 1, it moves deeper into the soil under the action of screw drive, achieving the effect of sampling. The settings of the fixing plate 13, the vertical hole 14 and the communicating transverse hole 15 enable the airbag member 4 to be connected and communicated with the sampling tube 1. The setting of the sampling head 12 makes the sampling process easier.

[0034] As Figure 1 and Figure 2 shown, the force-bearing member 3 is threadedly connected to the sampling tube 1. The force-bearing member 3 includes a pedal 31. An internally threaded vertical cylinder 32 is provided at the top end of the pedal 31. The internally threaded vertical cylinder 32 is threadedly connected to the externally threaded tube body 11;

[0035] Based on the above, the setting of the pedal 31 enables the sampling device to be fixed to the force-bearing member 3 by the user stepping on it during use. The internally threaded vertical cylinder 32 cooperates with the externally threaded tube body 11, enabling the sampling tube 1 to move vertically by screw drive.

[0036] As Figures 1 - 4, an airbag member 4, which is arranged at the top of the fixing plate 13 through a fixing nut 9 and is interconnected with the external threaded tube body 11 through a vertical hole 14 and a communicating transverse hole 15. The airbag member 4 includes an airbag main body 41 and a threaded tube 43;

[0037] Force receiving rings 42 are arranged at both the upper and lower ends of the airbag main body 41. A threaded tube 43 is arranged at the bottom end of the lower force receiving ring 42. The threaded tube 43 is interconnected with the airbag main body 41. The threaded tube 43 penetrates through the vertical hole 14. A communicating side hole 44 is arranged on the outer surface of the threaded tube 43, and the communicating side hole 44 is interconnected with the communicating transverse hole 15;

[0038] Based on the above, the setting of the airbag main body 41 serves to store volatile substances. The threaded tube 43 is connected to the fixing plate 13 through the fixing nut 9 and is interconnected with the sampling tube 1 through the communicating side hole 44, enabling air to enter the interior of the airbag main body 41.

[0039] As Figures 1 - 3 shown, a dial wheel 5, which is arranged outside the sampling tube 1 through screws;

[0040] A threaded cap 6 is arranged at the top of the sampling tube 1. A sealing ring 8 is arranged between the threaded cap 6 and the sampling tube 1. A sealing ring is arranged between the fixing nut 9 and the fixing plate 13;

[0041] A push block 7 is arranged inside the external threaded tube body 11. The diameter of the push block 7 is larger than the inner diameter of the sampling head 12 and smaller than the inner diameter of the top of the external threaded tube body 11;

[0042] Based on the above, the setting of the dial wheel 5 makes it convenient for the operator to rotate the sampling tube 1. The threaded cap 6 and the sealing ring 8 cooperate with each other to play a sealing role, preventing volatile substances from volatilizing from the top of the sampling tube. The push block 7 can cooperate with the push rod 2. After removing the threaded cap 6, the push rod 2 is inserted into the interior of the sampling tube 1, and the push block 7 is pushed to move through the push rod 2, thereby enabling the soil sample to be taken out.

[0043] When this embodiment is actually used, the force receiving member 3 is placed on the soil surface and fixed by stepping on it with the foot. Then, the sampling tube 1 is inserted into the interior of the internal threaded vertical cylinder 32, and the dial wheel 5 is rotated to make the sampling tube 1 move towards the soil under the action of screw drive;

[0044] During the movement of the sampling tube 1, soil is collected into the interior of the externally threaded tube body 11. In this process, the threaded cap 6 is not installed first. After collecting a part of the sample, the threaded cap 6 is installed. At this time, sampling continues. During the sampling process, the air in the sampling tube 1 is squeezed into the interior of the communication side hole 44 through the communication transverse hole 15 and the vertical hole 14, and enters the interior of the airbag body 41, causing the airbag body 41 to expand. During the sampling process, some substances volatilize, and the volatilized substances enter the airbag body 41 and are collected;

[0045] After sampling is completed, the sampling tube 1 is withdrawn. Before taking out the sample soil, after removing the fixing nut 9, by connecting the threaded tube 43 through a hose and squeezing the force-receiving ring 42, the gas with volatile substances can be introduced into a container for storage. By analyzing this part of the air, information such as the degree of volatilization can be understood;

[0046] Compared with traditional samplers, this sampling device makes it easier for the device to penetrate into the soil through a threaded drive. And by setting the airbag member 4, air and volatile substances can be collected, and then the degree of volatilization of organic matter during the sampling process can be measured. Combining with the content of organic matter remaining in the soil, the content, volatilization degree and other data of this part of volatile organic matter in the soil can be obtained as accurately as possible, making the detection results more accurate.

[0047] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A sampling device for detecting volatile organic compounds in soil, characterized in that: include: A sampling tube (1) and a push rod (2), wherein the sampling tube (1) comprises an externally threaded tube body (11), a fixing plate (13), a vertical hole (14), a communicating horizontal hole (15) and a threaded blind hole (16); A force-bearing member (3) connected to the sampling tube (1) via a threaded transmission; An airbag component (4) is arranged on the top of the fixing plate (13) through a fixing nut (9), and is connected to the externally threaded tube body (11) through a vertical hole (14) and a connecting horizontal hole (15). The airbag component (4) includes an airbag body (41) and a threaded tube (43); A toggle wheel (5) which is arranged on the outside of the sampling tube (1) by means of screws; A threaded cover (6) disposed on the top end of the sampling tube (1); A pushing block (7) is arranged inside the externally threaded tube body (11).

2. The sampling device for detecting volatile organic compounds in soil according to claim 1, characterized in that: The inner diameter of the externally threaded tube body (11) is larger than the inner diameter of its bottom end. The bottom end of the externally threaded tube body (11) is provided with a sampling head (12), and the sampling head (12) is a hollow truncated cone block.

3. The sampling device for detecting volatile organic compounds in soil according to claim 2, characterized in that: A fixing plate (13) is arranged outside the externally threaded tube body (11), a vertical hole (14) is arranged at the top end of the fixing plate (13), and a connecting transverse hole (15) is arranged inside the fixing plate (13), wherein the connecting transverse hole (15) connects the externally threaded tube body (11) and the vertical hole (14).

4. The sampling device for detecting volatile organic compounds in soil according to claim 3, characterized in that: The outer surface of the externally threaded tube body (11) is provided with threaded blind holes (16), the threaded blind holes (16) are distributed in an annular shape and at equal intervals, and the threaded blind holes (16) are arranged above the fixing plate (13).

5. The sampling device for detecting volatile organic compounds in soil according to claim 1, characterized in that: The force-bearing member (3) comprises a pedal (31), the top end of which is provided with an internally threaded vertical cylinder (32), and the internally threaded vertical cylinder (32) is threadedly connected to the externally threaded pipe body (11).

6. The sampling device for detecting volatile organic compounds in soil according to claim 1, characterized in that: The upper and lower ends of the airbag body (41) are both provided with force rings (42).

7. The sampling device for detecting volatile organic compounds in soil according to claim 6, characterized in that: A threaded tube (43) is provided at the bottom end of the force-bearing ring (42) below, and the threaded tube (43) is communicated with the airbag body (41).

8. The sampling device for detecting volatile organic compounds in soil according to claim 7, characterized in that: The threaded tube (43) passes through the vertical hole (14), and a communicating side hole (44) is provided on the outer surface of the threaded tube (43), and the communicating side hole (44) is communicated with the communicating horizontal hole (15).

9. The sampling device for detecting volatile organic compounds in soil according to claim 1, characterized in that: A sealing ring (8) is provided between the threaded cover (6) and the sampling tube (1), and a sealing ring is provided between the fixing nut (9) and the fixing plate (13).

10. The sampling device for detecting volatile organic compounds in soil according to claim 2, characterized in that: The diameter of the pushing block (7) is larger than the inner diameter of the sampling head (12) and smaller than the inner diameter of the top of the externally threaded tube body (11).

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