Air current classifier, process for preparing toner, and apparat

Details Air current classifier, process for preparing toner, and apparat Air current classifier, process for preparing toner, and apparat

1989-05-03

1991-05-21

Rosenbaum, Mark

Solid material comminution or disintegration

Processes

By utilizing kinetic energy of projected or suspended material

209143, 241 24, 241 29, 241 39, 241 791, 241 80, 430137, B02C 1906

Patent

active

050168231

ABSTRACT:
A separator for classifying powder with air current, comprises a powder feed pipe and a classifying chamber, provided in said separator; a guide chamber provided at the upper part of said classifying chamber to communicate with said powder feed pipe; a plurality of introducing louvers provided between said guide chamber and said classifying chamber, at which the powder is flowed in from said guide chamber to said classifying chamber through the openings between said introducing louvers together with carrying air; an inclined classifying plate raised at its central part, provided at the bottom of said classifying chamber; classifying louvers provided along the side wall of said classifying chamber, through the openings of which the air is flowed to produce a whirling stream by which said powder fed into said classifying chamber together with carrying air is centrifugally separated into fine powder and coarse powder; a discharge opening provide at the central part of said classifying plate and from which the classified fine powder is discharged; a fine powder discharge chute connected to said discharge opening; and a discharge opening formed along the periphery of said classifying plate and from which the classified coarse powder is discharged.

REFERENCES:
patent: 1897195 (1933-02-01), Howden
patent: 3877647 (1975-04-01), Gorobets et al.
patent: 4844349 (1989-07-01), Kanda et al.

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