Grate element and grate for combustion plants

Details Grate element and grate for combustion plants Grate element and grate for combustion plants

F - Mech Eng,Light,Heat,Weapons

23

H

F23H 15/00 (2006.01) F23H 7/08 (2006.01) F23H 11/10 (2006.01) F23H 17/12 (2006.01) F27D 15/02 (2006.01)

Patent

CA 2206725

The grate element (1, 2) for a grate in a combustion plant has, on the underside of the grate element head (7) or on the foot (8) of the grate element, recesses (10) which open downward, which serve as air escape orifices for the primary air which is fed from below. Arranged on the back (9) of each grate element there are stationary cleaning projections (11) corresponding to the number of recesses (10), whose cross-sectional shapes are adapted to the cross section of the recesses (10) except for the necessary free play. The cleaning projections (11) are located in the stroke area of the respective overlying grate element, and are of tapered design at least at the end which penetrates into the recess (10). To avoid excessive wear, each grate element (1, 2) can have an overlay (14) consisting ofwear-resistant material on the foot (8) of the grate element.

Élément de grille (1, 2) pour grille utilisée dans une installation de combustion comportant, sur la face inférieure de la tête de la grille (7) ou sur le pied (8) de l'élément de grille, des logements (10) ouverts vers le bas, qui servent d'évacuation d'air pour l'air primaire alimenté à partir de dessous. Sur le dos de chaque élément de grille on trouve des projections fixes de nettoyage (11) correspondant au nombre de logements (10) sauf pour le jeu libre nécessaire. Des projections de nettoyage (11) sont situées dans la zone de mouvement de chaque élément de grille superposé et sont de forme effilée au moins à l'extrémité qui pénètre dans le logement (10). Pour éviter qu'il y ait usure excessive, chaque élément de grille (1, 2) peut avoir une superposition (14) consistant en un matériau résistant à l'usure sur le pied (8) de l'élément de grille.

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