Agitating – Having specified feed means – Material introduced so as to cause rotary motion in mixing...
Patent
1995-09-01
1997-02-04
Jenkins, Robert W.
Agitating
Having specified feed means
Material introduced so as to cause rotary motion in mixing...
3661781, B01F 1502
Patent
active
055991017
ABSTRACT:
A low cost dry polymer processing system has an inverted submersible pump with a weir mounted on top of the pump housing and over an impeller 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. An electrolyte liquid rising in the sleeve overflows the top edge of the funnel in order to form a liquid 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. Thereafter, the remainder of the polymer processing is carried out by any suitable means.
REFERENCES:
patent: 3840213 (1974-10-01), Kormos
patent: 4175873 (1979-11-01), Iwako
patent: 4184771 (1980-01-01), Day
patent: 4778280 (1988-10-01), Brazelton
patent: 5344233 (1994-09-01), Barger
Grundfos Sales Piece entitled "You Can't Buy a Better Sump Pump" Mar. 1991.
A drawing (Fig. 6) entitled "The DP Series Design and Operation" showing a pulley and belt drive; taken from an unknown source (no date).
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