Patent ID: 9746243
Date: 2017-08-29
CPC Classifications: F27B

Claim:
1. A device ( 100 ) for cooling the opening of a rotary kiln ( 1 ) by means of cool air-blowing, said kiln comprising a metal cylinder ( 3 ) lined internally with a refractory material ( 73 ), said cylinder ( 3 ) being rotatably mounted relative to the frame of the kiln, into which materials are intended to be inserted and fired, said device ( 100 ) for cooling comprising: said cylinder ( two concentric metal casings ( ventilation means that allow cool air to flow through said annular channels ( in such a way as to allow the flow of air in said first channel ( 50 ) to the end part ( 4 ), then the flow of air in the opposite direction in said second channel ( 60 ), before the escaping of the air via an exhaust opening of said second channel ( 60 ), an annular distribution chamber ( said ventilation means comprising at least one fan ( rotating electrical connectors ( wherein, the annular rings ( an annular screen ( the cool air drawn by said at least one fan (