Device for preventing gas from gathering in roadway

Abstract

The utility model provides a device for preventing gas from gathering in a roadway, which belongs to the technical field of coal mine safety and industrial ventilation, and comprises a pumping and discharging system and an air introducing and mixing system, the pumping and discharging system comprises a pumping and discharging pipeline, a pumping and discharging fan and a gas collecting cover, the negative pressure pump is used for pumping gas floating upwards in a roadway to the outside by utilizing negative pressure; the air introducing and mixing system comprises a ventilating pipeline, a ventilating fan, an air distributor and a mixing diffuser and is used for introducing air into the air introducing and mixing system and fully mixing the air with the gas to reduce the gas concentration in an accumulation area; the gas collecting cover is installed in a gas easily-accumulated area on the top of a roadway and fixedly connected with multiple sets of collecting node inlets formed in the pumping and discharging pipeline through flanges, and the tail end, close to the outside, of the pumping and discharging pipeline is connected with the pumping and discharging fan. According to the utility model, the problem that safety accidents are easily caused by over-high concentration of a gas accumulation position when the gas is pumped to the outside can be solved.

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