Ventilation alarm device for coal mine

The utility model relates to a ventilation alarm device for coal mine, the mounting groove has been seted up in the top left side of passageway body in the pit, the top of stainless steel cylinder shape water tank communicates the fill of giving vent to anger through the connecting pipe, the gas outlet intercommunication of pipeline and first draught fan is passed through to the bottom of stainless steel cylinder shape water tank, admit air and fight through the air inlet intercommunication of pipeline with the second draught fan, the top fixed mounting of passageway body has monitoring alarmin the pit, central processing unit's output number of pass is according to arrangement module, data analysis module, detection data and normal data comparison module, generate report module and wireless signal transmission module's input electric connection on time, this ventilation alarm device for coal mine, the air quality inside to passageway body in the pit detects comprehensively, and the ventilation effect is good