US 4,320,710 AGranted

Grate mechanism for incinerating furnaces

AssigneeWidmer & Ernst AG

InventorsHansruedi Steiner, Arnold Erbsland

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Abstract

A grate assembly for a furnace for incinerating material comprises rows of moving grate bars which are arranged between rows of stationary grate bars and which are individually driven by drives arranged exteriorly of a combustion zone located beneath the rows of grate bars. Interposed between the grate bars and the drive are a lever system including a swivel lever fastened to a torsion shaft and a slide guide attachment for effecting approximately rectilinear movement of the moving grate bars. The torsion shaft is supported on sidewalls of the combustion zone and is rotatable and slideable by means of a bearing support which pivots about a shaft. Due to the approximately rectilinear movement and the optional, individual adjustment of the movement of adjacent moving rows of grate bars, the incineration behaviour of the material may be taken into consideration to a large extent and the drives may be easily maintained since they are readily accessible.

Claims7

Dependent claims

A grate assembly for a furnace for incinerating material comprising:

grate means composed of stationary and moving grate bar means arranged in rows and inclined at an angle of inclination relative to the horizontal, said grate bar means including a plurality of obliquely inclined grate bars juxtaposed in overlapping relationship in the direction of material flow through said furnace;
means defining a combustion zone beneath said grate means;
a torsion shaft having said moving grate bar means attached thereto and extending from beneath said grate means within said combustion zone to the exterior of said combustion zone;
drive means located on the exterior of said combustion zone for actuating said moving grate bar means through said torsion shaft;
a lever system including swivel lever means interposed between said drive means and said torsion shaft on the exterior of said combustion zone;
and slide guide attachment means interposed with said lever system between said drive means and said torsion shaft on the exterior of said combustion zone;
said drive means operating through coordination of said torsion shaft, said swivel lever means and said slide guide attachment means to impart to said moving grate bar means an approximately linear movement in the direction of inclination of said moving grate bar means.

4 more elements

Dependencies are inferred from the claim text.