Improve boiler of air feed

The utility model relates to a boiler, an improve boiler of air feed promptly. A plurality of plenums of its air feed system are by many typhoons machine air feed. Adopt the independent fan system of independent plenum, a fan is joined in marriage to a plenum promptly to adjust simultaneously by converter and air door, just so can very make things convenient for ground to carry out the accurate control to wind pressure, the amount of wind of every plenum, guarantee that blue charcoal is in the best fired state all the time on the grate, not only improved the heat exchange efficiency of boiler but also improved the burn -off rate of blue charcoal. The conclusion of a large amount of experiments is to join in marriage independent fan through using independent plenum to by converter and throttle control, the burn -off rate of blue charcoal brings up to about 96% from about 90%, and the heat exchange efficiency of boiler brings up to about 84% from 79%. To the blue charcoal of present annual output above 100, 000