Separated coal feeding system for raw coal bunker

The utility model discloses a separated coal feeding system for a raw coal bunker, which belongs to the technical field of thermal power generation and comprises an octagonal silo, two square-cone-shaped separated cabins arranged on the lower portion of the silo, a screw feeder arranged at the bottoms of the separated cabins and a coal feeder arranged below the screw feeder. A spiral feeder is arranged at the bottom of each branch bin, outlets of the two spiral feeders are connected with two inlets of the coal feeder respectively, and branch bin steel plates are arranged in the silo. The coal feeding amount of different coal bunkers can be accurately adjusted through the screw feeder, the coal blending combustion requirement of a unit under different load conditions is met, the silo part and the lower half part of the raw coal bunker are each of a rectangular octagonal structure, the volume of the raw coal bunker can be effectively increased, the height of a belt layer is reduced, investment is saved, and mea