AIR FLOW CLASSIFIER

PROBLEM TO BE SOLVED: To improve classification accuracy based on a Coanda effect by preventing occurrence of turbulence of powder flow in the vicinity of a nozzle opening in a raw material supply nozzle.SOLUTION: An air flow classifier for classifying a powder raw material into at least two classes...

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Bibliographische Detailangaben
Hauptverfasser:	SUGIYAMA TOMOKAZU, OSAKI KATSUNORI
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	OTHER SEPARATING BY DRY METHODS APPLICABLE TO BULK MATERIAL,e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL PERFORMING OPERATIONS SEPARATING SOLIDS FROM SOLIDS SEPERATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, ORSIFTING OR BY USING GAS CURRENTS SORTING TRANSPORTING
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To improve classification accuracy based on a Coanda effect by preventing occurrence of turbulence of powder flow in the vicinity of a nozzle opening in a raw material supply nozzle.SOLUTION: An air flow classifier for classifying a powder raw material into at least two classes comprises a Coanda block 8 provided to realize a Coanda effect to the powder raw material, a raw material supply nozzle 12, and at least one classification edge 10 forming the powder transport paths T1 corresponding to at least two classes. A bottom 12d of a nozzle opening 12c in the material supply nozzle 12 is arranged at an interval Z1 with respect to the surface 8a of the Coanda block 8.SELECTED DRAWING: Figure 5 【課題】原料供給ノズルのノズル開口の近傍における粉体流に乱れが発生することを防止して、コアンダ効果に基づく分級の精度を向上する。【解決手段】粉体原料を少なくとも２つの階級に分級する気流分級機において、粉体原料に対してコアンダ効果を実現するように設けられたコアンダブロック８及び原料供給ノズル１２と、少なくとも２つの階級に対応した粉体搬送路Ｔ１を形成する少なくとも１つの分級エッジ１０とを有しており、原料供給ノズル１２のノズル開口１２ｃの底辺１２ｄはコアンダブロック８の表面８ａに対して間隔Ｚ１をもって配置されている。【選択図】図５