Anti-blocking fire alarm device for fire engineering

The invention relates to the technical field of fire safety, in particular to an anti-blocking fire alarm device for fire engineering. Comprising a fixing base, the fixing base is fixedly connected with a fixing disc, a battery, a buzzer and a circuit board are installed on the side, away from the fixing base, of the fixing disc, an inductor is installed on the side, away from the fixing disc, of the circuit board, and the inductor, the battery and the buzzer are all electrically connected with the circuit board. A shell is arranged on the side, close to the fixing disc, of the fixing base, a ventilation pipeline is fixedly connected to the fixing disc, a first blade fan is rotationally connected into the ventilation pipeline, and cleaning pipes evenly distributed in the circumferential direction are fixedly connected to the end, away from the first blade fan, of the ventilation pipeline. The air flow is generated through rotation of the first blade fan, and under the condition that fire disasters do not occu