Novel heat exchange device of biomass hot blast stove

The invention discloses a heat exchanger of a hot blast stove. The heat exchanger comprises an upper air return cavity and a lower air return cavity; the upper air return cavity and the lower air return cavity are each provided with a cover plate; the upper air return cavity and the lower air return cavity are each provided with partition plates; each cover plate is in contact connection with the corresponding partition plates to form a plurality of air return ducts; the air return ducts of the upper air return cavity and the lower air return cavity communicate in a staggered mode through heat exchange pipes; the lower air return cavity is provided with a fire inlet; the fire inlet communicates with a hearth of the hot blast stove; the upper air return cavity is provided with a smoke outlet; and the smoke outlet communicates with a smoke exhaust pipe. The heat exchanger is high in efficiency and low in cost. 本发明公开了一种热风炉热交换器包括上回风腔、下回风腔；所述上回风腔和下回风腔分别设有盖板；所述上回风腔和下回风腔分别设有分隔板；所述盖板与分隔板接触连接形成若干回风道；所述上回风腔和下回风腔的回风道通过热