Efficient straw incinerator

The efficient straw incinerator comprises an incinerator wall, the incinerator wall is cylindrical on the whole, the axis of the incinerator wall is vertically arranged, the incinerator wall comprises a top wall body and a peripheral wall body arranged around the edge of the top wall body, the top wall body is provided with a smoke outlet and a turnover feeding door, and the lower portion of the peripheral wall body is provided with an ash outlet; the multiple grate bars are arranged at intervals, the two ends of each grate bar are installed on the peripheral wall, one part of each grate bar is a fixed grate bar, the other part of each grate bar is a movable grate bar movably connected to the peripheral wall in an inserted mode, and the grate bars divide the interior of the furnace wall into a combustion chamber on the upper portion and an ash outlet chamber on the lower portion; the combustion-supporting barrel is vertically arranged in the combustion chamber, an airflow inlet is formed in the bottom of the