Anti-plugging adjustable orifice for gas sparged hydrocyclone

Details Anti-plugging adjustable orifice for gas sparged hydrocyclone Anti-plugging adjustable orifice for gas sparged hydrocyclone

1991-03-27

1992-12-22

Silverman, Stanley S.

Classifying, separating, and assorting solids

Fluid suspension

Liquid

209211, 2105121, 2105123, 2102212, 162 4, 162 5, 2611221, B04C 516, B04C 5181, B04C 510, B03D 114

Patent

active

051731770

ABSTRACT:
In a hydrocyclone, particularly for deinking of paper pulp, a movable generally cylindrical plug is utilized to define an annular space near the accepts withdrawal conduit to effect release of obstructions should the annular space become clogged. The plug is biased by a spring, and moved against the spring pressure to enlarge the annular space automatically in response to a build up of back pressure. The plug also may be moved manually from exteriorly of the hydrocyclone housing, or may be operated by fluidic elements on a periodic basis to clean the annular space whether or not there has been a build up of back pressure. The hydrocyclone preferably is a gas sparged hydrocyclone, and recycled paper--with print on it--having a consistency of at least about 2% is treated to effect deinking.

REFERENCES:
patent: 2106532 (1938-01-01), Lockett
patent: 3213879 (1965-10-01), Thompson
patent: 3243043 (1966-03-01), Thompson
patent: 3249227 (1966-05-01), Long
patent: 3802570 (1974-04-01), Dehne
patent: 4134828 (1979-01-01), Trawinski
patent: 4587024 (1986-05-01), Hayatdavoudi
patent: 4744890 (1988-05-01), Miller
patent: 4872973 (1989-10-01), Ikebuchi
patent: 4971685 (1990-11-01), Stanley

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