Layered combustion membrane wall type industrial boiler

The utility model discloses a layered combustion membrane wall type industrial boiler which comprises a boiler body, a membrane wall arranged inside the boiler body, a grate arranged below the boiler body, and a coal distributing device arranged at one end of the grate, wherein the membrane wall is formed by heat conducting pipes which are arranged in gang manner and positioned between a boiler barrel and a collecting box; the adjacent heat conducting pipes are connected by a heat-conducting flat steel; the internal part of the coal distributing device is provided with an adjusting gate valve, a coal wedge disc, a coal spreading roller and a coal loosening roller; the coal loosening roller and the coal spreading roller are arranged obliquely; a coal blocking plate is arranged at the lower side surface of the coal spreading roller; a classifier is arranged below the coal blocking plate; a coal smoothening plate is arranged at the lower opening of a coal bucket; a front door with an observation mirror is arrang