Horizontal roller grate incinerator

The utility model relates to an incinerator, in particular to a horizontal roller grate incinerator which comprises a feeding hopper, an incinerator body, a grate, an air supply system and the like. The fire grate is a step-shaped fire grate and comprises a dry combustion section fire grate, a combustion section fire grate and a burnout section fire grate; the arrangement axis of every two adjacent sections of fire grates in each phase has a height difference H of 500-1000 mm, and the inclination angle alpha of the stepped axis of each section of fire grate is 22-30 degrees; each section of fire grate comprises a plurality of roller piece fire grates with horizontal axes, each roller piece fire grate is of a hollow long-barrel-shaped multi-blade structure formed by movably anchoring a plurality of V-shaped roller pieces on the roller surface of the supporting roller, and the V-shaped roller pieces are distributed in a star shape on the cross section of the supporting roller; and a plurality of blind window si