Smokeless steam engine of small-size ordinary pressure bituminous coal spontaneous combustion

The utility model relates to an ordinary pressure boiler field, in particular to smokeless steam engine of small-size ordinary pressure bituminous coal spontaneous combustion. Including the furnace body, be provided with the storage water tank in the furnace body and fire the hot laboratory cave, install the ball-cock assembly in the storage water tank, the ball-cock assembly is connected with outside running water through the automatic water supply mouth that sets up on the furnace body, firing the hot laboratory cave and having offered shang meikou, fire the hot laboratory cave lower part and be equipped with the thermal-collecting tube that violently appears, the thermal-collecting tube below that violently appears is equipped with smoke elimination vortex clean room, the inside vortex cross wall that is equipped with of smoke elimination vortex clean room, and smoke elimination vortex clean room top still is connected with erects the shape thermal-collecting tube, erects shape thermal-collecting tube top and is connected with the clean room, and the clean room top is the storage water tank, clean room and the exceedingly high union coupling of the chimney on furnace body top, the front of clean room sets up out the dirt mouth. The utility model discloses can automatic add water in the use, greatly reduced intensity of labour, do not emit black cigarette during the burning, have efficiency height, characteristics that environmental protection effect is good, the dust of its production is handled in can concentrating on fixed area, and is convenient clean.