Air classifier with specified truncated cone-like breather pipe

Details Air classifier with specified truncated cone-like breather pipe Air classifier with specified truncated cone-like breather pipe

1997-09-16

1999-07-13

Rosenbaum, Mark

Solid material comminution or disintegration

Apparatus

Including means applying fluid to material

209 3, 241 791, B02C 1906

Patent

active

059214813

ABSTRACT:
An air classifying system that can produce toner particles having a desired particle size is disclosed. The air classifying system contains a supplying pipe for supplying raw materials; a truncated cone-like breather pipe that has a ratio of minimal opening sectional area S.sub.1 to a maximum opening sectional area S.sub.0 being between 0.2 and 0.5, and an angle .theta. formed between axis and generatrix being between 10.degree. and 35.degree.; a classifying means for classifying the raw materials supplied through the supplying pipe; and an air flow-generating means for generating air-flow for transporting the raw materials in the classifying system.

REFERENCES:
patent: 3840188 (1974-10-01), Coombe et al.
patent: 4186772 (1980-02-01), Handleman
patent: 4361290 (1982-11-01), Francis
patent: 5035364 (1991-07-01), Escallon

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