Agitating – Having specified feed means – Material introduced so as to cause rotary motion in mixing...
Patent
1996-07-01
1999-03-09
Soohoo, Tony G.
Agitating
Having specified feed means
Material introduced so as to cause rotary motion in mixing...
3661781, B01F 1502
Patent
active
058790802
ABSTRACT:
A low cost dry polymer processing system has a housing containing submersible pump with a weir mounted on top of the housing and over an impeller chamber in the housing. The weir is a combination of a sleeve and a coaxial funnel with a top edge of the funnel that is level with respect to gravity to the extent that an inside wall of the funnel is wetted with an unbroken sheet of liquid. An electrolyte liquid rising in the sleeve overflows the top edge of the funnel in order to form a liquid sheet or curtain uniformly covering the inside wall of the funnel. The amount of liquid is limited so that the impeller is not hydraulically locked. Dry polymer is dropped through the funnel and into the eye of the impeller enclosed within the chamber which is drained via a port in the bottom of the pump housing. Fresh electrolyte is introduced into the housing at a level which is under the impeller. Thereafter, the mixture of the electrolyte and polymer is drained from the impeller compartment via the port. Before the mixture is completely discharged from the housing, another supply of fresh electrolyte is introduced into the draining mixture.
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