STEEL BALL RECOVERY DEVICE AND STEEL BALL RECOVERY METHOD FOR SHOT CLEANING DEVICE

摘要

PPROBLEM TO BE SOLVED: To provide a steel ball recovery device and a steel ball recovery method for a shot cleaning device preventing temperature rising of steel balls due to contact of the steel balls with high temperature dust for a long time. PSOLUTION: In a steel ball separating device of the shot cleaning device, the steel balls are spread on a heat transfer tube and the dust adhered to the boiler heat transfer tube is removed, the spread steel balls and the dust are taken out from a boiler lower part, and the steel balls are separated from the dust and cooled. A separating device of a trommel structure is connected to a boiler lower part via a supply chute 3, and in the trommel structure, sieves are a concentric and cylindrical double structure, they are structured to integrally rotated by the same rotary shaft, the inner side coarse sieve 1b is a coarse sieve for sieving the steel balls 14 and the powdery dust 15 onto the outer side fine sieve 1a, and the outer side sieve is a fine sieve 1a for sieving the powdery dust 15. PCOPYRIGHT: (C)2010,JPO&INPIT