Grate cooler
AssigneeKHD Humboldt Wedag GmbH
InventorHubert Ramesohl
Life of this patent
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Abstract
A grate cooler of simple construction whose cooling grate is substantly protected against wear and which can be operated in simple fashion and with a high cooling efficiency. A plurality of rotatably supported tubular oscillating shafts, spaced apart from one another, are arranged transversely to the conveyance direction of cooling feed material above a stationary cooling grate. Upwardly extending shovel arms (16a, 16b, 16c), are attached to the shafts which move with a reciprocating oscillatory motion (17) in the conveyance direction of cooling feed material. The shovel arms have a pushing surface on their forward side and a wedge surface on their rearward side and, in their oscillatory motion, moving the hot bed of cooling feed material successively from the beginning of grate-cooler to the discharge of the grate cooler.
Claims11
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.
Dependencies are inferred from the claim text.