| 摘要 |
PROBLEM TO BE SOLVED: To prevent a water content separated from a pellet from being redeposited to remove it. SOLUTION: A cylindrical first perforated cylinder 14, a second perforated cylinder 15 and a third perforated cylinder 16 are coaxially provided continuously inside a cyclone 4 having an inner diameter whose diameter is made smaller in turn. The wall face of each perforated cylinder is formed by a punching metal 17. A ring-like first step face 22 is provided between the first perforated cylinder 14 and the second perforated cylinder 15, and the first perforated cylinder 14 in its vicinity is provided with an air nozzle 23 circumferentially at a predetermined interval. Air flow ejected from each air nozzle accelerates a flow rate of swirl flow and also blows off the water content accumulating on the first step face. Similarly, a second step face 26 is provided between the second perforated cylinder 15 and the third perforated cylinder 16, and the second perforated cylinder 15 in its vicinity is provided with air nozzles 27 circumferentially at a predetermined interval. The upside of the first perforated cylinder 14 is provided with a supply port 19 for supplying the swirl flow conveying the pellet, and the third perforated cylinder 16 is provided with a suction port 30 for sucking inside air to accelerate the swirl flow. COPYRIGHT: (C)2007,JPO&INPIT
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