Flue fire extinguishing device

The utility model discloses a flue fire extinguishing device, and belongs to the technical field of fire fighting devices. A flue fire extinguishing device comprises a main flue, containing plates arefixedly connected to the two sides of the outer surface of the main flue, a water pump is arranged at the tops of the containing plates, a water pipeline is inserted into one end of the water pump, aspraying pipe is fixedly connected to the other end of the water pump, and one end of the spraying pipe penetrates into the main flue. And one end of the spray pipe is in threaded connection with a spray head. According to the flue fire extinguishing device, the spraying pipe and the spray head are arranged in the main flue, then fire extinguishing is conducted on a fire source in the main flue in a spray head water spraying mode, meanwhile, a worker starts the motor, the motor drives the lantern ring to rotate through a motor rotating shaft, and due to the fact that the fan blades are fixedly connected with the lante