Air guiding device for grain bin gas detection

Abstract

This utility model discloses a gas guiding device for gas detection in grain silos, comprising mounting brackets, gas conduits, and a gas tube box. Multiple mounting brackets are spaced apart and inserted into the grain surface within the silo. The number of gas conduits corresponds to the number of mounting brackets, with their inlets fixed to each bracket. The gas tube box is located at the bottom of the outer wall of the grain silo, and the outlets of all gas conduits extend into the gas tube box. This utility model, by arranging multiple gas conduits inside the grain silo and extending them outside, allows for direct connection of a traditional handheld suction gas detection device to the gas conduits for gas extraction and detection at various points within the silo. This enables the detection and assessment of the overall gas conditions within the silo, ensuring the safety of personnel entering the silo. Compared to methods that deploy sensors inside the silo, this utility model has lower installation and operating costs, a longer equipment lifespan, and is more convenient to install and maintain.

Description

Technical Field

[0001] This utility model relates to the field of gas sampling devices, and in particular to a gas guiding device for gas detection in grain warehouses. Background Technology

[0002] During grain storage, phosphine is used regularly for fumigation to kill pests, and inspection personnel also periodically enter the warehouse to test the grain condition. To ensure the safety of personnel entering the grain warehouse, the gas concentration inside the warehouse must be tested before each entry. When the oxygen concentration inside the warehouse is less than 19.5% or the phosphine concentration is greater than 0.2 ppm, personnel are prohibited from entering the warehouse.

[0003] Currently, most grain depots use traditional handheld gas concentration detectors to monitor gas levels. The drawback of these devices is that they can only detect gas concentrations near the warehouse door and cannot reflect the overall gas concentration within the warehouse. Some grain depots install one or more gas concentration sensors inside the warehouse. This method can detect the gas concentration throughout the warehouse, but the sensors operate continuously inside, leading to gas corrosion that affects their lifespan. Furthermore, the fixed installation of gas concentration sensors in each grain warehouse prevents on-demand usage and results in high operating costs. Utility Model Content

[0004] To overcome the aforementioned shortcomings of existing gas detection methods in grain warehouses, the technical problem to be solved by this utility model is to provide a gas guiding device for gas detection inside grain warehouses that can be used to detect gases outside the warehouse using a traditional handheld gas concentration detection device.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] A gas guiding device for gas detection in a grain silo includes a mounting bracket, gas conduits, and a gas tube box. The mounting bracket has multiple sections, which are spaced apart and inserted into the grain surface in the grain silo. The number of gas conduits corresponds to the number of mounting brackets, and the inlet end of each gas conduit is fixed to one mounting bracket. The gas tube box is located at the bottom of the outer wall of the grain silo, and the outlet ends of all gas conduits extend into the gas tube box through the cable tray of the grain silo.

[0007] Furthermore, each of the four corners of the grain silo is equipped with a mounting bracket, and a mounting bracket is installed every 3 to 5 meters in the central area.

[0008] Furthermore, the inlet end of the gas conduit is located within a range of 20 to 50 cm above the grain surface.

[0009] Furthermore, each gas conduit is made up of two pipe sections joined together by a connector, which is located at the top inlet of the cable tray in the grain silo.

[0010] Furthermore, the upper end of the mounting bracket is provided with a clamp, and the gas conduit is fixed to the mounting bracket by the clamp.

[0011] Furthermore, the mounting bracket is equipped with a scale, which extends from the position of the clamp as the zero line to the lower end of the mounting bracket.

[0012] Furthermore, the gas pipe box is located near the power distribution box of the grain warehouse.

[0013] Furthermore, the outlet end of the gas conduit is provided with a quick-connect interface that can be connected to a handheld suction gas detection device.

[0014] Furthermore, the quick-connect interface is equipped with an openable sealing end cap.

[0015] Furthermore, the gas duct box contains a distribution diagram of gas conduits, and the outlet end of the gas conduits is marked with symbols corresponding to the pipe locations on the distribution diagram.

[0016] The beneficial effects of this utility model are as follows: By arranging multiple gas conduits inside the grain silo using mounting brackets and extending the gas conduits to a gas pipe box outside the grain silo, a traditional handheld gas extraction device can be directly connected to the gas conduits to extract and detect gas at various points inside the silo, thereby achieving the detection and judgment of the overall gas situation inside the silo and ensuring the safety of inspection personnel entering the silo; compared with the solution of arranging sensors inside the silo, this utility model has lower installation and usage costs, can be applied to the renovation and upgrading of almost all grain depots, has a longer service life, and is relatively convenient to install and maintain. Attached Figure Description

[0017] Figure 1 This is the main structural view of this utility model;

[0018] Figure 2 This is a top view of the structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the mounting bracket of this utility model;

[0020] Figure 4 yes Figure 1 Enlarged view of section A;

[0021] Figure 5 yes Figure 1 A magnified view of section B.

[0022] The markings in the diagram are as follows: 1-mounting bracket, 2-gas conduit, 3-gas pipe box, 4-grain bin, 5-distribution box, 11-clamp, 12-ruler, 21-connector, 22-quick connector, 23-sealing end cap, 31-distribution diagram, 41-grain surface, 42-cable tray. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings.

[0024] It should be noted that if this utility model contains directional indicators such as up, down, left, right, front, and back, these are used to describe the relative positional relationships between components and are not specific references to the absolute positions of related components or the positional relationships between components. They are only used to explain the relative positional relationships and movement of components in a specific posture. If the specific posture changes, the directional indicator will also change accordingly. If this utility model contains terms related to quantity, such as "many," "multiple," or "several," these specifically refer to two or more.

[0025] like Figure 1 , Figure 2 As shown, this utility model provides a gas guiding device for gas detection in a grain silo, including a mounting bracket 1, gas conduits 2, and a gas tube box 3. Multiple mounting brackets 1 are spaced apart and inserted onto the grain surface in the grain silo 4. The number of gas conduits 2 corresponds to the number of mounting brackets 1, with the inlet end of each gas conduit 2 fixed to one mounting bracket 1. The gas tube box 3 is located at the bottom of the outer wall of the grain silo 4. The outlet ends of all gas conduits 2 extend into the gas tube box 3 through a cable tray 42 in the grain silo 4. The mounting bracket 1 can be made of plastic or metal rods, and the gas conduits 2 are flexible plastic hoses. For grain silos 4 that already have cable trays 42, the gas conduits 2 are directly passed through the cable trays 42 and then placed into the gas tube box 3. For grain silos 4 that do not originally have cable trays 42, a cable tray 42 is added between the top and bottom of the outer wall of the grain silo 4, and the gas tube box 3 is located at the lower end of the cable tray 42.

[0026] The usage process of this utility model is as follows: After the grain is loaded and laid in the grain warehouse, the mounting brackets 1 are inserted at intervals on the grain surface. Then, gas conduits 2 are arranged according to the position of the mounting brackets 1. The inlet end of the gas conduit 2 is fixed to the mounting bracket 1, and the outlet end passes through the cable tray 42 and is placed in the gas tube box 3. When it is necessary to test the gas in the warehouse, a handheld suction gas detection device is first connected to the outlet end of one of the gas conduits 2, and then the gas in the warehouse is extracted to test the concentration of gases such as oxygen or phosphine. After the test is completed, the next gas conduit 2 is extracted and tested until all gas conduits 2 are tested. Only when the gas content at all points meets the standard can the gas be put into the warehouse.

[0027] In addition, this invention can also serve as an auxiliary device for phosphine fumigation. In grain silos, solid phosphine is typically used for pest control; its slow evaporation provides long-lasting protection. However, depending on ventilation conditions, phosphine may evaporate too quickly, reducing its effectiveness. During the fumigation process, this invention allows for periodic sampling of the silo's gas concentration. If the concentration at a certain point is below a predetermined standard, the fumigation device can be connected to the corresponding gas conduit 2, allowing phosphine gas to be replenished into the silo to ensure optimal fumigation results.

[0028] like Figure 2 As shown, when arranging the gas conduit 2, an installation bracket 1 can be set at each of the four corners of the grain silo 4, and an installation bracket 1 can be set at every 3 to 5 meters in the central area. It is more appropriate to set 5 to 8 in total, which can basically reflect the gas content in the entire silo.

[0029] When fixing the gas conduit 2, it is best to position the inlet end of the gas conduit 2 within 20-50 cm above the grain surface. Because phosphine gas is heavier than air, it will generally accumulate within this range. Extracting and testing the gas within this range can better determine the concentration of phosphine.

[0030] Because different grain silos have different sizes, the positions of cable trays 42 are also variable. Therefore, to facilitate the arrangement of gas conduits 2, each gas conduit 2 can be configured as a structure in which two sections of pipe are joined together by connectors 21, such as... Figure 4 As shown, the connector 21 is located at the top inlet of the cable tray 42 in the grain silo 4. In this way, the length of the gas conduit 2 from the top of the cable tray 42 to the gas pipe box 3 can be fixed, and the length of the gas conduit 2 from the top of the cable tray 42 to each mounting bracket 1 can be selected according to the actual situation, thereby improving the convenience of the gas conduit 2 arrangement.

[0031] like Figure 3 As shown, to facilitate the fixing of the gas conduit 2, a clamp 11 can be installed at the upper end of the mounting bracket 1, and the gas conduit 2 is fixed to the mounting bracket 1 by the clamp 11. To better control the height of the gas conduit 2's inlet end, a scale 12 is provided on the mounting bracket 1, with the scale 12 extending downwards from the position of the clamp 11 as the zero line. In this way, the gas conduit 2's inlet end can be fixed to the clamp 11, and the insertion height of the mounting bracket 1 can be determined by directly observing the scale line at the contact point between the scale 12 and the grain surface.

[0032] Furthermore, to facilitate power supply to the handheld suction-type gas detection device or phosphine fumigation equipment during gas detection, the gas pipe box 3 can be installed near the power distribution box 5 of the grain silo 4, such as... Figure 2 As shown. Additionally, to improve detection efficiency, a quick-connect interface 22 can be provided at the outlet end of the gas conduit 2 for connection to a handheld suction-type gas detection device and a phosphine fumigation device. To prevent toxic gases inside the chamber from leaking out through the gas conduit 2, an openable sealing cap 23 is provided at the quick-connect interface 22. Normally, the sealing cap 23 covers the quick-connect interface 22, and is only opened when gas concentration needs to be detected.

[0033] like Figure 5 As shown, to clearly identify which location of gas is being detected during gas detection, a distribution map 31 of the gas conduits 2 is provided inside the gas conduit box 3. The distribution map 31 can be installed on the door of the gas conduit box 3. The outlet end of each gas conduit 2 is marked with a symbol corresponding to the pipe location on the distribution map 31. When initially arranging the gas conduits 2, the position of each gas conduit 2 needs to be determined based on the pipe location on the distribution map 31. For the scheme described above, which uses connectors 21 to connect the gas conduits 2, corresponding symbols need to be set on the connectors 21 to ensure the accuracy of the connection and arrangement of the gas conduits 2. During detection, the gas concentration at the corresponding symbol point is recorded after each gas conduit 2 is detected. This avoids missed or repeated detections, improving the efficiency and accuracy of the detection.

Claims

1. A gas guiding device for gas detection in grain silos, characterized in that: The system includes a mounting bracket (1), gas conduits (2), and a gas pipe box (3). The mounting bracket (1) has multiple conduits, which are spaced apart and inserted on the grain surface (41) in the grain silo (4). The number of gas conduits (2) corresponds to the number of mounting brackets (1). The inlet end of one gas conduit (2) is fixed on one mounting bracket (1). The gas pipe box (3) is located at the bottom of the outer wall of the grain silo (4). The outlet ends of all gas conduits (2) extend into the gas pipe box (3) through the cable tray (42) of the grain silo (4).

2. The gas guiding device for gas detection in grain silos as described in claim 1, characterized in that: Each of the four corners of the grain warehouse (4) is provided with an installation bracket (1), and an installation bracket (1) is provided every 3 to 5 meters in the central area.

3. The gas guiding device for gas detection in grain silos as described in claim 1, characterized in that: The gas inlet of the gas conduit (2) is located within 20 to 50 cm above the grain surface.

4. The gas guiding device for gas detection in grain silos as described in claim 1, characterized in that: Each gas conduit (2) is formed by connecting two pipe sections together with a connector (21), which is located at the top inlet of the cable tray (42) of the grain silo (4).

5. The gas guiding device for gas detection in grain silos as described in claim 1, characterized in that: The upper end of the mounting bracket (1) is provided with a clamp (11), and the gas conduit (2) is fixed on the mounting bracket (1) by the clamp (11).

6. The gas guiding device for gas detection in a grain silo as described in claim 5, characterized in that: The mounting bracket (1) is provided with a scale (12), which extends from the position of the clamp (11) as the zero line to the lower end of the mounting bracket (1).

7. The gas guiding device for gas detection in grain silos as described in claim 1, characterized in that: The gas tube box (3) is located near the power distribution box (5) of the grain warehouse (4).

8. The gas guiding device for gas detection in grain silos as described in claim 1, characterized in that: The outlet end of the gas conduit (2) is provided with a quick-connect interface (22) that can be connected to a handheld vacuum gas detection device.

9. The gas guiding device for gas detection in a grain silo as described in claim 1, characterized in that: The quick-connect interface (22) is provided with an openable sealing end cap (23).

10. The gas guiding device for gas detection in a grain silo as described in claim 1, characterized in that: The gas tube box (3) is provided with a distribution diagram (31) of gas conduits (2), and the gas outlet end of the gas conduits (2) is marked with symbols corresponding to the pipe locations on the distribution diagram (31).

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