Liquid purification or separation – Processes – Separating
Patent
1989-07-12
1992-01-21
Dawson, Robert A.
Liquid purification or separation
Processes
Separating
210197, 2105123, 422119, 422269, 422278, 422281, 422295, B01D 17038
Patent
active
050825747
ABSTRACT:
An apparatus for treating material with liquid has defined therein a cylindrical chamber, suspended above the bottom of which is a receptacle for holding the material to be tested, the bottom of which receptacle is permeable to the treatment liquid. Above the receptacle there is arranged a duct with inlets at its end and outlets disposed above the receptacle. In use, a magnetic stirrer drives a vortex of liquid up the side wall of the chamber and liquid from the vortex enters the duct from which liquid pours down onto the material to be treated in the receptacle and is then recycled. The apparatus includes one or more of the improvements that suspension of the receptacle and duct is by means which does not interfere with the vortex, that the area of the inlets is maximized by forming them with an arcuate profile, and that the bore in the duct is formed such that the wall above the bore is relatively thick and a suspending rod can be screwed thereinto.
REFERENCES:
patent: D281722 (1985-12-01), Carrol
patent: 2627977 (1953-02-01), Kent
patent: 2892620 (1959-06-01), Johnston
patent: 3495946 (1970-02-01), Hudson
patent: 3650950 (1972-03-01), White
patent: 4680112 (1987-07-01), Carrol
Dawson Robert A.
Drodge Joseph
Trenchbond Limited
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