| 摘要 |
PURPOSE:To prevent powder materials from accumulating or adhering to in a gas feeding chamber by providing an agitating blade in the lower side of a dispersion plate in a vertical agitating and fluidizing tank to agitate powder materials by means of combination of an agitator and air current. CONSTITUTION:An agitating tank 1 is divided into upper and lower sections with a dispersion plate 3, and an agitator 2 is provided in an upper section agitating chamber, while a gas feed opening 4 is provided in a lower section gas feed chamber 5. An agitating blade 6 is fixed to the agitating shaft of an agitator 2 in the gas feeding chamber 5 section and revolved with the revolution of the agitating shaft to agitate the gas in the gas feeding chamber 5, subjecting to float powder materials dropping from the dispersion plate 3. In that case, the agitating blade 6 is preferably a paddle type which deposits only a little powder materials to the element face by means of, for instance, setting the clearance between the agitating blade 6 and the inner wall of the gas feeding chamber 5 at 10mm or less. By said arrangement, the floating powder materials are drawn continuously or intermittently out of a discharge outlet 8 of the lower section. |
