Rotary drum type garbage incinerator

The invention discloses a rotary drum type garbage incinerator which comprises a hearth, a rotary drum and a rotary drum. And the drum-type fire grate is arranged in the hearth in the direction from one end of the feeding port to the other end of the feeding port, the drum-type fire grate is arranged downwards in an inclined mode, and the drum-type fire grate comprises a plurality of drums capable of rotating forwards and backwards in the axial direction. The rotating direction, the rotating speed and the rotating angle of the roller on the roller type fire grate can be flexibly adjusted according to the arrangement position of the roller and the heat value of garbage needing to be combusted so as to adapt to incineration of garbage of various working conditions and different heat values, and wide-load garbage incineration is achieved. The rotary drum is arranged to be the rotary drum capable of rotating forwards and backwards, on the premise that a preheating drying grid is not arranged, it can be guaranteed