Ceramic perforated plate for in-feed of firing cavity, with recess let into each vertical side wall in built-in position of plate

摘要

The ceramic perforated plate has at least one recess (14, 15) let into in each side wall (vertical in the built-in position), which can be pushed up on the guide pieces (16, 17) of the vertical arms (8, 9) of a frame (5). The boundary surfaces between the recesses and the guide pieces are at an acute angle to the horizontal. The recesses may be closed on the firing cavity side.