Soil carbon dioxide measurement experiment device

Abstract

The utility model belongs to the technical field of soil detection, and discloses a soil carbon dioxide measurement experimental device. The device comprises a sample bin, a plurality of containing cavities are evenly formed in the sample bin, sample bottles are placed in the containing cavities, bottom covers are connected to the bottoms of the sample bottles, sealing plugs are arranged at bottle openings of the sample bottles, a connecting pipe is connected to the centers of the sealing plugs in a penetrating mode, and a collecting cover is connected to one end of the connecting pipe. The other end of the connecting pipe is connected with a U-shaped pipe, and the U-shaped pipe is connected with the inner top face of a top cover through a clamping mechanism. During detection, a sample in a sample cavity in a bottom cover at the bottom of each sample bottle only needs to be replaced, carbon dioxide generated by the sample in the sample bottle can be collected into the U-shaped pipe in cooperation with the U-shaped pipe connected with the connecting pipe and liquid in the U-shaped pipe, and the liquid level in the U-shaped pipe changes under the action of air pressure, so that the carbon dioxide is detected. Thus, the content of carbon dioxide in the sample is obtained.

Description

Technical Field

[0001] The utility model relates to the technical field of soil detection, in particular to a soil carbon dioxide measurement experimental device. Background Art

[0002] During respiration and photosynthesis, soil produces carbon dioxide gas, as well as other types of gases. Studying the amount of carbon dioxide released by soil is of great significance for studying soil respiration and photosynthesis.

[0003] The traditional device for measuring carbon dioxide in soil is composed of multiple glass vessels connected together, which occupies a large area and is relatively scattered. In addition, when in use, only one sample can be tested at a time. When testing large quantities of soil samples, it is time-consuming and labor-intensive, and the labor intensity of the staff is high. Utility Model Content

[0004] The utility model aims to provide a soil carbon dioxide measurement experimental device to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A soil carbon dioxide measurement experimental device comprises a sample bin, wherein a plurality of accommodating cavities are evenly arranged inside the sample bin, a sample bottle is placed inside the accommodating cavity, a bottom cover is connected to the bottom of the sample bottle, a sealing plug is arranged at the bottle mouth of the sample bottle, a connecting pipe is connected through the center of the sealing plug, one end of the connecting pipe is connected to a collecting cover, and the other end of the connecting pipe is connected to a U-shaped tube, and the U-shaped tube is connected to the inner top surface of the top cover through a clamping mechanism.

[0007] Further preferably, a connecting platform is provided at the connection between the accommodating cavity and the sample bottle, and the connecting platform and the connecting block on the surface of the sample bottle are cooperatively connected to each other.

[0008] Further preferably, the connecting platform is in a ring-shaped structure or a uniformly distributed arc-shaped structure, and the connecting block is in a ring-shaped structure.

[0009] Further preferably, the bottom cover includes an outer connecting portion, which is connected to the bottom surface of the sample bottle by a threaded connection, a sample cavity is arranged inside the connecting portion, a transition cavity is arranged between the sample cavity and the connecting portion, and a sealing ring is arranged at the connection between the bottom of the transition cavity and the sample bottle.

[0010] Further preferably, a reserved groove is provided at the bottom of the sample chamber at a position corresponding to the bottom cover.

[0011] Further preferably, a drain port is provided at the bottom center of the U-shaped tube, and a drain valve is provided on the outside of the drain port, a plug is also connected to the end of the U-shaped tube close to the connecting tube, a scale is provided on the surface of the U-shaped tube away from the connecting tube, or a liquid level sensor is provided inside the U-shaped tube.

[0012] Further preferably, the clamping mechanism includes a connecting rod, the connecting rod is in an L-shaped structure, and the top of the connecting rod is connected to the inner top surface of the top cover, and clamping heads are respectively provided at both ends of the connecting rod, and a U-shaped tube is clamped inside the clamping head.

[0013] Further preferably, the sample chamber and the top cover are fixedly connected by connecting columns arranged at four corners.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] Through the multiple accommodating cavities evenly arranged inside the sample bin, in conjunction with the sample bottles and the bottom covers threadedly connected at the bottom of the sample bottles, during testing, only the sample inside the sample cavity inside the bottom cover at the bottom of each sample bottle is replaced, and the U-shaped tube connected by the connecting tube and the liquid inside the U-shaped tube can be used to collect the carbon dioxide generated by the sample inside the sample bottle into the U-shaped tube. Under the action of air pressure, the liquid level inside the U-shaped tube changes, and the liquid level is monitored by a scale set on the surface of the side of the U-shaped tube away from the connecting tube, or by a liquid level sensor set inside the U-shaped tube, thereby obtaining the carbon dioxide content in the sample.

[0016] A sealing ring is also provided at the connection between the bottom of the transition chamber and the sample bottle to ensure that the sample bottle and the bottom cover are sealed when in use, and cooperate with the sealing plug at the mouth of the sample bottle to ensure that the carbon dioxide generated by the sample in the sample bottle will not leak. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the sample bin structure of the utility model;

[0019] Figure 3 This is a schematic diagram of the bottom cover structure of the utility model;

[0020] In the figure: 1. sample chamber; 2. top cover; 3. connecting column; 4. accommodating chamber; 5. connecting platform; 6. sample bottle; 7. bottom cover; 8. connecting part; 9. sample chamber; 10. transition chamber; 11. sealing ring; 12. reserved groove; 13. connecting block; 14. sealing plug; 15. connecting pipe; 16. collecting cover; 17. U-shaped pipe; 18. drain port; 19. plug; 20. clamping mechanism; 21. connecting rod; 22. chuck. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-3 , the utility model provides a technical solution:

[0023] A soil carbon dioxide measurement experimental device comprises a sample bin 1, wherein a plurality of accommodating cavities 4 are evenly arranged inside the sample bin 1, a sample bottle 6 is placed inside the accommodating cavity 4, a bottom cover 7 is connected to the bottom of the sample bottle 6, a sealing plug 14 is arranged at the bottle mouth of the sample bottle 6, a connecting tube 15 is penetrated and connected at the center of the sealing plug 14, one end of the connecting tube 15 is connected to a collecting cover 16, and the other end of the connecting tube 15 is connected to a U-shaped tube 17, and the U-shaped tube 17 is connected to the inner top surface of the top cover 2 through a clamping mechanism 20.

[0024] In the present invention, a connecting platform 5 is further provided at the connection between the accommodating cavity 4 and the sample bottle 6, and the connecting platform 5 cooperates with a connecting block 13 on the surface of the sample bottle 6 to connect with each other. The connecting platform 5 is an annular or evenly distributed arc structure, and the connecting block 13 is an annular structure.

[0025] In the present invention, the bottom cover 7 includes an outer connecting portion 8, which is connected to the bottom surface of the sample bottle 6 by threaded connection, a sample cavity 9 is arranged inside the connecting portion 8, a transition cavity 10 is arranged between the sample cavity 9 and the connecting portion 8, and a sealing ring 11 is arranged at the connection between the bottom of the transition cavity 10 and the sample bottle 6. A reserved groove 12 is also arranged at the position of the bottom cover 7 at the bottom of the sample chamber 1.

[0026] In the utility model, a drain port 18 is provided at the bottom center of the U-shaped tube 17, and a drain valve is provided on the outside of the drain port 18. A plug 19 is also connected to the end of the U-shaped tube 17 close to the connecting tube 15. A scale is provided on the surface of the U-shaped tube 17 away from the connecting tube 15, or a liquid level sensor is provided inside it.

[0027] In the present invention, the clamping mechanism 20 includes a connecting rod 21, which is in an L-shaped structure, and the top of the connecting rod 21 is connected to the inner top surface of the top cover 2, and clamping heads 22 are respectively provided at both ends of the connecting rod 21, and the U-shaped tube 17 is clamped inside the clamping head 22.

[0028] In the utility model, the sample bin 1 and the top cover 2 are fixedly connected by connecting columns 3 arranged at the four corners. A plurality of positioning holes can be symmetrically arranged at the top of the sample bin 1 and the bottom of the top cover 2, and the positioning holes can be plugged in with the connecting columns 3 to facilitate disassembly of the sample bin 1 and the top cover 2.

[0029] Embodiment 1,

[0030] When in use, first connect the sample bin 1 to the work surface through a mounting frame or a placement frame, and the mounting frame or the placement frame only needs to be hollowed out on the bottom surface to ensure that the bottom of the sample bin 1 is suspended. Through the multiple accommodating chambers 4 evenly arranged inside the sample bin 1, the sample bottle 6 is matched, and a connecting platform 5 is also arranged at the connection between the accommodating chamber 4 and the sample bottle 6, and the connecting platform 5 and the connecting block 13 on the surface of the sample bottle 6 are mutually matched and connected. The connecting platform 5 is an annular or evenly distributed arc structure, and the connecting block 13 is an annular structure. The bottom cover 7 of the sample bottle 6 is threadedly connected, and the bottom cover 7 includes an outer connecting portion 8, and the connecting portion 8 is connected to the bottom surface of the sample bottle 6 by a threaded connection. A sample cavity 9 is arranged inside the connecting portion 8, and a transition cavity 10 is also arranged between the sample cavity 9 and the connecting portion 8, and a sealing ring 11 is also arranged at the bottom of the transition cavity 10 and the connection with the sample bottle 6, which cooperates with the sealing plug 14 at the mouth of the sample bottle 6 to ensure that the carbon dioxide generated by the sample in the sample bottle 6 will not leak. A reserved groove 12 is also arranged at the position corresponding to the bottom cover 7 at the bottom of the sample bin 1, which is convenient for replacing the bottom cover 7. During testing, as long as the sample inside the sample cavity 9 inside the bottom cover 7 at the bottom of each sample bottle 6 is replaced, the carbon dioxide generated by the sample inside the sample bottle 6 can be collected into the U-shaped tube 17 in cooperation with the U-shaped tube 17 connected by the connecting tube 15 and the liquid inside the U-shaped tube 17. Under the action of air pressure, the liquid level inside the U-shaped tube 17 changes. The liquid level in the U-shaped tube 17 is monitored by the scale set on the surface of the side of the U-shaped tube 17 away from the connecting tube 15, thereby obtaining the carbon dioxide content in the sample.

[0031] Embodiment 2,

[0032] The difference between this embodiment and embodiment 1 is that a drain port 18 is provided at the bottom center of the U-shaped tube 17, and a drain valve is provided outside the drain port 18. When not in use for a long time, the drain valve is opened to discharge the liquid inside the U-shaped tube 17 through the drain port 18. At the same time, when in use, a liquid level sensor can be provided inside the U-shaped tube 17 away from the connecting tube 15, and the liquid level height inside the U-shaped tube 17 can be directly monitored by the liquid level sensor, so as to obtain the liquid level difference and calculate the carbon dioxide content in the sample. When using the liquid level sensor, it needs to be used in conjunction with the control panel, and the data monitored by the liquid level sensor can be directly displayed on the control panel.

[0033] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention, and any figure mark in the claims should not be regarded as limiting the claims involved.

[0034] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A soil carbon dioxide measurement experimental device, comprising a sample chamber (1), characterized in that: A plurality of accommodating cavities (4) are evenly arranged inside the sample bin (1), a sample bottle (6) is placed inside the accommodating cavity (4), the bottom of the sample bottle (6) is connected to a bottom cover (7), a sealing plug (14) is arranged at the mouth of the sample bottle (6), a connecting tube (15) is connected through the center of the sealing plug (14), one end of the connecting tube (15) is connected to a collecting cover (16), and the other end of the connecting tube (15) is connected to a U-shaped tube (17), and the U-shaped tube (17) is connected to the inner top surface of the top cover (2) through a clamping mechanism (20).

2. A soil carbon dioxide measurement experimental device according to claim 1, characterized in that: A connecting platform (5) is also provided at the connection between the accommodating cavity (4) and the sample bottle (6), and the connecting platform (5) and a connecting block (13) on the surface of the sample bottle (6) are cooperatively connected to each other.

3. A soil carbon dioxide measurement experimental device according to claim 2, characterized in that: The connecting platform (5) is in the form of a ring or a uniformly distributed arc structure, and the connecting block (13) is in the form of a ring.

4. A soil carbon dioxide measurement experimental device according to claim 1, characterized in that: The bottom cover (7) comprises an outer connecting portion (8), wherein the connecting portion (8) is connected to the bottom surface of the sample bottle (6) by means of a threaded connection, a sample cavity (9) is arranged inside the connecting portion (8), a transition cavity (10) is arranged between the sample cavity (9) and the connecting portion (8), and a sealing ring (11) is arranged at the connection between the bottom of the transition cavity (10) and the sample bottle (6).

5. A soil carbon dioxide measurement experimental device according to claim 4, characterized in that: A reserved groove (12) is also provided at a position of the bottom of the sample chamber (1) corresponding to the bottom cover (7).

6. A soil carbon dioxide measurement experimental device according to claim 1, characterized in that: A liquid discharge port (18) is provided at the center of the bottom of the U-shaped tube (17), and a liquid discharge valve is provided outside the liquid discharge port (18). A plug (19) is also connected to the end of one side of the U-shaped tube (17) close to the connecting tube (15).

7. A soil carbon dioxide measurement experimental device according to claim 1, characterized in that: The clamping mechanism (20) comprises a connecting rod (21), the connecting rod (21) is in an L-shaped structure, and the top of the connecting rod (21) is connected to the inner top surface of the top cover (2), and clamping heads (22) are respectively provided at both ends of the connecting rod (21), and the U-shaped tube (17) is clamped inside the clamping head (22).

8. A soil carbon dioxide measurement experimental device according to claim 1, characterized in that: The sample chamber (1) and the top cover (2) are fixedly connected via connecting columns (3) arranged at four corners.

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