A soil gas emission collection device

Abstract

The utility model discloses a kind of soil gas emission collection devices, including mouth-shaped base, the top end of base is recessed with sink, fixed strip is fixedly installed in sink by rustproof bolt, the bottom end of fixed strip is fixedly connected with box body, the top end of box body is respectively fixedly connected with gas pipe valve on both sides outer wall, lithium battery, temperature sensor are respectively fixedly installed between gas pipe valve, the top end of box body is fixedly installed with axial fan on inner wall;The outer wall of four corners of base is respectively fixedly connected with support frame, movable strip is respectively slidably sleeved in support frame, the top end of movable strip is fixedly connected with operating strip, the bottom end of movable strip is respectively fixedly connected with positioning cone, the top wall of operating strip both sides is respectively slidably abutted with one side bottom end of anti-drop block, the other side of anti-drop block is respectively pivotally connected with the top end of base both sides. By injecting water source in sink, water seal environment is formed to box body, the sealing between box body, base and soil is guaranteed, gas leakage is avoided.

Description

Technical Field

[0001] This utility model relates to the field of soil gas collection technology, specifically a soil gas emission collection device. Background Technology

[0002] As a major agricultural ecosystem, rice paddies have a significant impact on greenhouse gas emissions (such as methane and carbon dioxide) globally. Accurate measurement and analysis of greenhouse gas emissions from rice paddies are crucial for understanding the impact of agriculture on global climate change.

[0003] Traditional greenhouse gas sampling methods typically involve using various types of sampling boxes placed on the surface of paddy fields to collect greenhouse gas samples. However, traditional sampling boxes often have poor sealing between themselves and the soil, which can easily lead to gas leakage and affect the accuracy of the measurement results. In addition, the sampling boxes are not very stable in the paddy field and are easily moved or overturned by wind, animal activity or other external factors. To address these issues, we propose a soil gas emission sampling device. Utility Model Content

[0004] The purpose of this invention is to provide a soil gas emission collection device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a soil gas emission collection device, including a U-shaped base, a water trough recessed at the top of the base, a fixing strip fixedly installed in the water trough by anti-rust bolts, the fixing strip fixedly connected to the bottom of the box body, gas pipe valves fixedly connected to the outer walls on both sides of the top of the box body, a lithium battery and a temperature sensor fixedly installed between the gas pipe valves, and an axial flow fan fixedly installed on the inner wall of the top of the box body;

[0006] Support frames are fixedly connected to the four corner outer walls of the base. Movable strips are slidably fitted inside the support frames. An operating strip is fixedly connected to the top of the movable strip. A positioning cone is fixedly connected to the bottom of the movable strip. The top walls on both sides of the operating strip slide against the bottom of one side of the anti-detachment block. The other side of the anti-detachment block is rotatably connected to the top two sides of the base.

[0007] Preferably, the bottom end of the base is recessed with a groove.

[0008] Preferably, a sealing gasket is fixedly connected to the bottom inner wall of the water tank.

[0009] Preferably, the bottom inner wall of the water tank is provided with a plurality of evenly distributed threaded holes, and the threaded holes are threadedly connected to anti-rust bolts.

[0010] Preferably, the box is a sealed, bottomless box.

[0011] Preferably, the movable strip has an L-shaped structure.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. By injecting water into the tank, a water seal environment is formed in the tank, ensuring the airtightness between the tank, the base and the soil, and preventing gas leakage;

[0014] 2. The positioning cone is inserted into the soil, and the movable strip goes deep into the soil to provide additional support and limit the position of the base, which improves the stability of the base in the paddy field and prevents it from moving or tipping over due to external factors. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0017] Figure 3 This utility model Figure 2 Enlarged schematic diagram of the structure at point A in the middle.

[0018] In the diagram: 1. Base; 2. Water tank; 3. Rust-proof bolt; 4. Fixing strip; 5. Box body; 6. Gas pipe valve; 7. Lithium battery; 8. Temperature sensor; 9. Support frame; 10. Movable strip; 11. Positioning cone; 12. Operating strip; 13. Axial flow fan; 14. Groove; 15. Sealing gasket; 16. Threaded hole; 17. Anti-detachment block. Detailed Implementation

[0019] 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. Example

[0020] Reference Figure 1 , 2This is the first embodiment of the present invention, which provides a soil gas emission collection device, including a U-shaped base 1. A water trough 2 is recessed at the top of the base 1. A fixing strip 4 is fixedly installed in the water trough 2 by anti-rust bolts 3. The fixing strip 4 is fixedly connected to the bottom of the box body 5. Gas pipe valves 6 are fixedly connected to the outer walls on both sides of the top of the box body 5. A lithium battery 7 and a temperature sensor 8 are fixedly installed between the gas pipe valves 6. An axial flow fan 13 is fixedly installed on the inner wall of the top of the box body 5. The temperature sensor 8 is a PT1000 type temperature sensor to monitor the temperature inside the box body 1. The lithium battery 7 provides power to the whole device.

[0021] Support frames 9 are fixedly connected to the four corners of the outer wall of the base 1. Movable strips 10 are slidably sleeved inside the support frames 9. The top of the movable strips 10 is fixedly connected to the operating strips 12. The bottom of the movable strips 10 is fixedly connected to the positioning cones 11. The top walls on both sides of the operating strips 12 slide against the bottom of one side of the anti-detachment block 17. The other side of the anti-detachment block 17 is rotatably connected to the top two sides of the base 1. Example

[0022] Reference Figure 1-3 This is the second embodiment of the present utility model. This embodiment is based on the previous embodiment. Specifically, the bottom end of the base 1 is recessed with a groove 14. After the base 1 is placed at the soil collection position, the base 1 is pressed down and the groove 14 is inserted into the soil to avoid gaps between the base 1 and the soil.

[0023] Specifically, a sealing gasket 15 is fixedly connected to the bottom inner wall of the water tank 2. The setting of the sealing gasket 15 improves the sealing performance between the fixing strip 4 and the bottom wall of the water tank 2.

[0024] Specifically, the bottom inner wall of the water tank 2 is recessed with multiple evenly distributed threaded holes 16. The threaded holes 16 are threaded to connect to anti-rust bolts 3. The anti-rust bolts 3 cooperate with the threaded holes 16 to fix the fixing strip 4 in the water tank 2. Then, water is injected into the water tank 2, and the water overflows the fixing strip 4, thereby achieving a water seal effect.

[0025] Specifically, the chamber 5 is a sealed, bottomless chamber, and the bottom of the chamber 5 is connected to the U-shaped base 1 to collect soil gas emissions. This device can also allow air circulation inside and outside the chamber 5. In addition to collecting greenhouse gases, it can also be used to measure nitrogen fixation rate, ammonia volatilization rate and other items.

[0026] Specifically, the movable strip 10 has an L-shaped structure and slides with the support frame 9, which facilitates the movement of the movable strip 10.

[0027] The working principle and process are as follows: The base 1 is placed at the soil collection location, and the bottom end of the base 1 is inserted into the soil. The soil enters the groove 14. The anti-detachment block 17 is manually rotated. The anti-detachment block 17 has a straight structure. The anti-detachment block 17 is rotated to be parallel to the length direction of the base 1, so as not to obstruct the movement of the operating bar 12. The operating bar 12 is manually pressed, and the operating bar 12 drives the fixed movable bar 10 to move down. The movable bar 10 drives the positioning cone 11 fixed at the bottom end to be inserted into the soil. After the positioning cone 11 is deeply inserted into the soil, the movable bar 10 is inserted into the soil at the same time. When the operating bar 12 moves to the bottom of the base 1, the positioning cone 11 is inserted into the soil. Afterwards, manually move the anti-detachment block 17. The straight anti-detachment block 17 rotates to be perpendicular to the length of the operating bar 12, thereby limiting the operating bar 12 and preventing it from rising. This prevents the positioning cone 11 from detaching from the soil. The fixing bar 4 has a U-shaped structure. The anti-rust bolt 3 and the threaded hole 16 are used to fix the fixing bar 4 in the water tank 2. Then, water is injected into the water tank 2. The water overflows the fixing bar 4, thereby achieving a water seal effect. This ensures the airtightness between the box, the base and the soil, and prevents gas leakage. The soil gas emission collection steps are consistent with the steps of the existing greenhouse gas collection static box.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A soil gas emission collection device, comprising a U-shaped base (1), characterized in that: The top of the base (1) is recessed with a water tank (2). A fixing strip (4) is fixedly installed in the water tank (2) by anti-rust bolts (3). The fixing strip (4) is fixedly connected to the bottom of the box body (5). Air pipe valves (6) are fixedly connected to the outer walls on both sides of the top of the box body (5). A lithium battery (7) and a temperature sensor (8) are fixedly installed between the air pipe valves (6). An axial flow fan (13) is fixedly installed on the inner wall of the top of the box body (5). Support frames (9) are fixedly connected to the four corner outer walls of the base (1). Movable strips (10) are slidably sleeved inside the support frames (9). The top of the movable strips (10) is fixedly connected to the operating strips (12). The bottom of the movable strips (10) is fixedly connected to the positioning cones (11). The top walls on both sides of the operating strips (12) slide against the bottom of one side of the anti-detachment block (17). The other side of the anti-detachment block (17) is rotatably connected to the top two sides of the base (1).

2. The soil gas emission collection device according to claim 1, characterized in that: The base (1) has a recessed groove (14) at its bottom end.

3. The soil gas emission collection device according to claim 1, characterized in that: A sealing gasket (15) is fixedly connected to the bottom inner wall of the water tank (2).

4. The soil gas emission collection device according to claim 1, characterized in that: The bottom inner wall of the water tank (2) is provided with a plurality of evenly distributed threaded holes (16), and the threaded holes (16) are threaded to connect to anti-rust bolts (3).

5. The soil gas emission collection device according to claim 1, characterized in that: The box (5) is a sealed, bottomless box.

6. The soil gas emission collection device according to claim 1, characterized in that: The active bar (10) has an L-shaped structure.

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