Air chamber of biomass circulating fluidized bed boiler

The utility model relates to an air chamber capable of discharging ash smoothly, in particular to an air chamber of a biomass circulating fluidized bed boiler. The device structurally comprises an air chamber air inlet passage connected with an air supply pipeline, a first ash bucket, a second ash bucket and a third ash bucket are sequentially arranged on the lower portion in an air chamber on the inner side of the air chamber air inlet passage, a first ash discharging pipe is connected to the lower portion of the first ash bucket, a second ash discharging pipe is connected to the lower portion of the second ash bucket, and a third ash discharging pipe is connected to the lower portion of the third ash bucket. According to the air chamber of the biomass circulating fluidized bed boiler, the three ash hoppers and the ash discharging pipes are additionally arranged on the basis of an existing air chamber on the north side, so that ash is discharged on the two sides, and the labor intensity can be obviously redu