Cyclonic classifier discharge mechanism, cyclone classifier and polishing processing system

摘要

In one aspect, a discharge mechanism is provided in a cyclone classifying apparatus for classifying the powder and discharging the powder stored in the reservoir of the cyclone classifier.The discharge mechanism comprises an opening / closing member for opening and closing an exhaust port formed in the reservoir, and an injector for injecting the compressed gas in a pulse form with respect to the powder stored in the reservoir.When the compressed gas is injected from the injector, the opening / closing member receives the pressing force by the compressed gas to open the discharge port.When the compressed gas is not injected from the injector, the outlet is urged by the negative pressure of the reservoir to be urged toward the reservoir side to close the outlet.