GLIDING NOZZLE FOR JET MILL, EJECTOR NOZZLE FOR JET MILL, AND JET MILL INCLUDING THE SAME

摘要

PROBLEM TO BE SOLVED: To solve such a problem that elaboration in powdering a raw material is lost when a gliding nozzle or an ejector nozzle for use in a jet mill performs jet ejection from a source pressure against a pressure in a container, because there is no nozzle having a structure suitable for the expansion adapted thereto.;SOLUTION: In the gliding nozzle 10 which is provided at a sidewall of a casing having an inner chamber with a planarly perfect circular shape at an equally divided pitch and has a tip surface having an arc shape along an inner surface of the sidewall of the casing for jet spreading, a rubber nozzle having a slit width expanded more at an outlet than at a throat is used. In the ejector nozzle which is provided at a part of a sidewall a casing having an inner chamber with a planarly perfect circular shape and supplies a raw material together with a jet into the casing, an outlet area is increased more than a throat area in accordance with a ratio of source pressure/pulverization chamber pressure, for achieving the adaptation to the expansion from the source pressure. The outlet has a circular, elliptical, or rectangular section.;COPYRIGHT: (C)2012,JPO&INPIT