Patent ID: 6382963
Filing Date: 2002-05-07
Classification: F27B,F27D

Abstract:
A grate cooler comprising:a stationary cooling grate (12) through which cooling gas flows and over which the cooling feed material to be cooled, such as hot cement clinker, can move in a predetermined conveyance direction; a plurality of horizontally extended and rotatably supported tubular shafts (15a, 15b, 15c) above said stationary cooling grate (12) spaced in parallel relation to one another in said conveyance direction and disposed axially transverse to said conveyance direction; upwardly extending shovel arms (16a, 16b, 16c) attached at one end to of said tubular shafts (15a, 15b, 15c) and presenting a free end, said shovel arms (16a, 16b, 16c) executing a fore and aft reciprocating oscillatory motion (17) in said conveyance direction of said cooling feed material when said tubular shafts are oscillated; and each of said shovel arms (16a, 16b, 16c) having a pushing surface (18) on the forward side of said free end and a wedge surface (19) on their rearward side.