Cyclone dust analyzer for determining microdust content in fiber

Classifying – separating – and assorting solids – Plural – diverse separating operations – Gaseous suspension and sifting

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209 3, 209237, 209250, 209144, 73432PS, 73 28, 73159, 55270, B07B 706, B07B 902

Patent

active

042496551

ABSTRACT:
An apparatus for removing dust from a fiber sample for subsequent analysis is disclosed. A first upper cylindrical chamber containing a fiber sample has a tangential air jet and a radial air jet installed to swirl and tumble the fiber sample in a cyclonic fashion, thus liberating the dust from the sample when either a positive or a negative pressure is applied through the air jets. The liberated dust particles are then screened out through a 100 mesh screen filter and exhausted through a funnel. The device can be equipped with a second stage chamber containing a plurality of step-stage filters and a third stage plurality of microfilters to selectively screen the dust particles. A blow bottle containing an aqueous medium to absorb even the finest dust particles or gas can also be added as a fourth stage.

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patent: 3918585 (1975-11-01), Hagelstam
patent: 4046593 (1977-09-01), Au et al.
patent: 4154111 (1979-05-01), Anderson et al.
patent: 4155247 (1979-05-01), Kaczmarek et al.

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