Structure is prevented blockking up by boiler wind and smoke way

The utility model discloses a structure is prevented blockking up by boiler wind and smoke way, especially a structure is prevented blockking up by boiler wind and smoke way who relates to boiler windflue system field. The utility model discloses a structure is prevented blockking up by boiler wind and smoke way, including flue, cavity and with the communicating air preheater of cavity, be provided with the two export bellows that are listed as longitudinal arrangement in the air preheater, two list and form the wind channel between the one's intention as revealed in what one says case, be provided with flue outlet on the flue, flue outlet and air preheater intercommunication is provided with the forced draught blower at the both ends in wind channel, the both sides of forced draught blower are provided with the fan heater, at fan heater closure plate before the one side in wind channel is provided with the warm braw, at air outlet bellows closure plate before the one side in wind channel is provided with bel