Solid fuel boiler burner

Solid fuel boiler burner, with a combustion chamber with aeration openings, driven by an electric motor through a transmission gear, and a fuel feeder with an electric motor driving the feeder worm, and the fuel chute elements with an outlet in the initial zone of the rotary worm feeder which supplies the fuel to the combustion chamber, as well as blower elements which supply air to the zone below and/or above the layer of burning fuel, characterized in that the rotary combustion chamber mounted in the casing is equipped with primary and secondary air ducts and the casing is connected by hook catches with a gearwheel which is mounted rotationally between two cage bearings, placed between the main plate and the compensating and pressure plate having openings for the inflow of air from the blower chamber through an adjustable screen which controls the ratio of primary to secondary air injected into the primary and secondary aeration ducts by increasing or decreasing the inside diameter of openings, moreover the worm fuel feeder has an axially placed aeration duct, with an inlet composed of openings placed in the blower chamber and an outlet composed of openings in the combustion chamber.