| 摘要 |
PURPOSE:To air transport high-density granular powder at low speed in a vertical air transport device for powder by blowing air in the base of a supply tank to cause an eddy to vertically transport the powder with a height- adjustable diffuser and a vertical transport pipe. CONSTITUTION:Granular powder P supplied from a powder supply pipe 12 into a supply tank 11 is accumulated at a mixing portion 11C. The mixing portion 11C has secondary air nozzles 14, 16 mounted on the base portion and the side wall portion, which have a designated blowoff deflecting angle with respect to the center, so that the secondary air 17 is jet out, thereby to let granular powder P flow in whirls to be mixed. Hereupon, the height of a diffuser 21 is controlled to blow the primary air from a primary air nozzle 13, thereby to blow the granular powder P in a vertical transport pipe 20, and the air and the granular powder P are separated from each other by a separator 25. The air is discharged 28, and the granular powder P is taken out 27. Thus, the powder can be transported with high density at a low speed. |
