US 11,808,450 B2
Grate block with rising nose
Maurice Henri Waldner, Wettingen (CH); and Werner Brennwald, Neftenbach (CH)
Assigned to HITACHI ZOSEN INOVA AG, Zurich (CH)
Appl. No. 18/025,414
Filed by HITACHI ZOSEN INOVA AG, Zürich (CH)
PCT Filed Sep. 9, 2021, PCT No. PCT/EP2021/074785
§ 371(c)(1), (2) Date Mar. 9, 2023,
PCT Pub. No. WO2022/053551, PCT Pub. Date Mar. 17, 2022.
Claims priority of application No. 20195290 (EP), filed on Sep. 9, 2020.
Prior Publication US 2023/0258333 A1, Aug. 17, 2023
Int. Cl. F23G 5/00 (2006.01)
CPC F23G 5/002 (2013.01) [F23G 2203/101 (2013.01); F23G 2203/803 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A grate block, as part of an incineration grate for thermal treatment of waste, in which the grate blocks are arranged one above the other in a staircase-like manner and are designed in such a manner that, by means of advancing movements executed relative to one another, during incineration the incineration material is rearranged and conveyed in a direction of conveyance F,
wherein the grate block comprises a block body, realized as a casting, having the following components:
a rear end and a front end that is opposite to the rear end in the direction of conveyance F,
an upper wall, which is substantially parallel to a longitudinal axis L of the block body and forms a rear bearing surface for the waste to be treated, wherein the rear bearing surface defines a substantially horizontal plane,
and a nose, which is arranged in the region of the front end and is raised with respect to the horizontal plane,
wherein the raised nose comprises a front bearing surface rising in the direction of conveyance F up to a culmination point, as well as a downwardly sloping end portion that adjoins the front bearing surface after the culmination point, wherein the downwardly sloping end portion comprises a discharge surface that slopes downward substantially in an arcuate manner in the direction of conveyance F, and
wherein the front bearing surface is S-shaped as viewed in longitudinal section along the direction of conveyance F.