Gas concentration detection box in coal mine tunnel

Abstract

The invention relates to a gas concentration detection box in a coal mine tunnel, which comprises: a box body, wherein an air suction pipe is arranged on the box body, a filter device and a gas detector are arranged in the box body, the air suction pipe, the filter device and the gas detector are communicated in sequence, and the filter device comprises a fixed air guide block which is fixedly connected with the box body; a movable air guide block which is movably connected with the fixed air guide block through a connecting rod parallel to the connecting rod, wherein a butt joint opening is formed in the movable air guide block; a filter cartridge, wherein butt joints detachably connected with the butt joints are arranged at the two ends of the filter cartridge; and a hose which is communicated with the fixed air guide block and the movable air guide block. The filter cartridge is detachably connected and is convenient to replace. The replacement operation of the filter cartridge can be realized outside the box, so that the operation is simpler and quicker.

Description

technical field [0001] The invention relates to the technical field of gas concentration measurement, in particular to a gas concentration detection box in a coal mine roadway. Background technique [0002] Underground operations in coal mines are prone to various mine accidents due to the influence of geological conditions, toxic gases, and anoxic environment, which have caused serious harm to the lives and properties of coal miners. Among them, gas explosion is the most harmful in various mining accidents. Gas is a kind of hydrocarbon gas stored in coal seams. The main component is methane, which is a colorless, tasteless, odorless gas that is flammable and explosive. It poses a major threat to the safe production of coal mines. Therefore, it is necessary to detect the gas concentration. [0003] Generally, a gas detector is used for detection. The gas detector uses an incandescent bulb as a light source, and uses the difference in refractive index of light waves to air ...

AI Technical Summary

Problems solved by technology

[0004] However, in practical applications, the gas detector still has a problem that the moisture desiccant and carbon dioxide absorbent will become invalid after a period of use and need to be replaced in time. However, the existing gas detector has complicated replacement steps and is not convenient for moisture Desiccant and CO2 absorber for replacement

Images