Coal supply or distributing device for chain boiler

The utility model discloses a coal supplying or distributing device for chain boilers, which comprises an upper coal bin, a middle coal falling pipe and a lower coal feeding device. Each coal falling opening on a top of the coal bin is provided with a flow guiding grid plate which inclines to an outlet center point of the coal bin, so coal blocks and coal powder fallen to the grid plate can be uniformly distributed without blocking. The coal feeing device is provided with drum, the lower part of a rear panel is provided with a layering sieve plate, and the lower part of the sieve plate are divided into a top and a bottom comb-shaped strips. So the coal fallen to the comb-shaped strips can generate different acceleration according to different block and powder weight, and therefore, the coal flowed to a fire grate segment can be distributed in layers with larger upper part and small lower part. The utility model is suitable for ventilation and reducing coal leaking, a drum shaft is connected with a grate shaft so as to coordinate actions, and the utility model has the advantages of simple structure, wide application and remarkable combustion condition improvement effect.