Patent ID: 8353408
Filing Date: 2013-01-15
Classification: B07B

Abstract:
1. A centrifugal air classifier comprising: a rotor provided in a casing and including a dispersion plate and a rotational plate, the plates being fixed to a rotor rotational shaft with a space therebetween in an axial direction, and a plurality of rotor blades held between outer circumferential parts of the both plates; guide vanes provided outside the rotor blades so as to be opposed to the rotor blades through a classification space; an air inlet provided in the casing for supplying the classification space with air for classification through the guide vanes; a powder inlet provided in an upper part of the casing so as to be faced to the dispersion plate; and a fine powder outlet for discharging a classified fine powder to an outside of the classifier; wherein a relation between an area S