Patent ID: 8746157

Claim:
A bottom ash discharging device for a coal-fired boiler, comprising: a) a clinker case; b) a grate; c) a clinker crusher; and d) an ash guiding device; wherein the grate is disposed inside the clinker case and comprises a plurality of metal rods; the clinker crusher is installed above the grate for crushing clinkers; the ash guiding device is installed between a bottom ash hopper outlet of the coal-fired boiler and the clinker crusher for limiting the clinkers to drop into a clinker crushing area, so as to prevent the clinkers from dropping into an area where the clinker crushing body cannot reach; an upper end of the ash guiding device is connected to the bottom ash hopper outlet; the guiding device is a vertical guiding plate positioned vertically below and around the bottom ash hopper outlet; the clinker crusher comprises at least a pair of clinker crushing components with relative movement for crushing the clinkers and a driving device for driving the clinker crushing components; a clinker crushing body is installed on a front end of each clinker crushing component; at least one baffle plate positioned vertically below the bottom ash hopper outlet and on a rear end of each clinker crushing component, the baffle plate extending upwardly; and the guiding plate is closer than the baffle plate to the clinker crushing body.