| 摘要 |
A device for cooling the opening of a rotary kiln via cool air-blowing, the kiln including a metal cylinder lined internally with a refractory material and being rotatably mounted relative to the frame of the kiln, into which materials are intended to be inserted and fired. The cooling device includes: the aforementioned cylinder and a metal cylinder end part covered with a refractory material and secured to the cylinder; two concentric metal casings, known as the inner and outer casing, which surround the cylinder of the kiln and form two annular channels; and ventilation elements that allow cool air to flow through the annular channels. The device includes: an annular distribution chamber which surrounds the cylinder, is secured thereto and supplies the first channel with air; ventilation elements including at least one fan and an electric motor actuating the fan, and supplying the distribution chamber in an air-tight manner. |
| 主权项 |
1. 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 (3) of said rotary kiln and an end part (4) of the metal cylinder, covered with a refractory material (74), secured to said cylinder (3), intended to protect the end of the cylinder (3) of the kiln from high temperatures, two concentric metal casings (5, 6), known as the inner casing (5) and outer casing (6), said two casings (5, 6) surrounding said cylinder (3) of the kiln (1) and constituting two annular channels (50, 60) between on the one hand, said cylinder (3) and said inner casing (5), known as the first channel (50), and on the other hand, between said inner casing (5) and said outer casing (6), known as the second channel (60), ventilation means that allow cool air to flow through said annular channels (50, 60), 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), characterised in that it comprises: an annular distribution chamber (8), surrounding said cylinder (3) and secured to said cylinder (3) of the kiln, supplying said first channel (50) with air, said ventilation means comprising at least one fan (9) and an electric motor actuating said at least one fan (9), said ventilation means being borne on the metal cylinder (3) of the kiln, rotatably mounted therewith, supplying said distribution chamber (8) in an air-tight manner, rotating electrical connectors (10, 11), comprising annular rings (10) surrounding said cylinder (3) of the kiln, and contacts (11), able to slide or roll on the annular rings (10) during the rotation of the kiln in order to allow electricity to be supplied to the electric motor(s) of said ventilation means. |
