Blending of fluid materials

Details Blending of fluid materials Blending of fluid materials

1982-02-03

1984-03-13

Lutter, Frank W.

Agitating

Having specified feed means

Responsive to condition sensor

209 10, G05D 1102

Patent

active

044364334

ABSTRACT:
Particulate material such as sand is classified in two or more classifying devices (13 and 15) which operate on the principle of "hindered settling" each to provide a coarse underflow fraction and a fine overflow fraction. A chosen blend 12 of the underflow fractions is provided by pneumatic control circuitry (FIGS. 2,5,6) which actuates flow control valves (14 and 16) to open, by amounts in accordance with a chosen blend ratio, only when there is sufficient material available for blending.

REFERENCES:
patent: 3182969 (1965-05-01), Rupp
patent: 3295677 (1967-01-01), Londolios
patent: 3379421 (1968-04-01), Putman
patent: 4032436 (1977-06-01), Johnson
patent: 4282088 (1981-08-01), Ennis
"Method for Controlling Coffee Density", Research Disclosure, No. 201, Jan. 1981.

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