Patent ID: 8118170
Filing Date: 2012-02-21
Classification: B07B

Abstract:
1. A particulate size classification apparatus comprising: a particulate size classifying chamber provided with an exhaust port for particulates; a particulate introducing unit having a nozzle ejecting to the inside of the particulate size classifying chamber a carrier gas containing particulates to be classified; and a particulate trapping unit provided in the particulate size classifying chamber and selectively trapping particulates ejected from the nozzle, wherein among the particulates ejected from the nozzle, particulates made uniform in size by not being trapped by the particulate trapping unit are ejected from the exhaust port; and wherein the particulate introducing unit has a particulate introduction pipe introducing the carrier gas into the particulate size classifying chamber, and the nozzle has a plurality of ejection ports having orifice diameters of different sizes, and is placed separately from the particulate introduction pipe so that the selected ejection port is connected to the particulate introduction pipe.