Dispensing – Cutoff operated by selectively preset volume or rate of... – Operating cycle including reset to starting position
Patent
1979-01-22
1980-09-16
Spar, Robert J.
Dispensing
Cutoff operated by selectively preset volume or rate of...
Operating cycle including reset to starting position
177 70, 222 58, 222 77, 417 37, G01G 1704
Patent
active
042224969
ABSTRACT:
Apparatus and process are provided for weight-blending two or more constituents on a continuous basis. In operation, the constituents are sequentially added to a weight-measuring tank connected to a weight scale with an indicator which undergoes excursion between sensors positions. The scale face has an indicator which undergoes excursion between position sensors, such as electric eyes. When the system is electrically activated, a first position sensor detects zero weight from the measuring tank and remotely calls for the pumping of the first constituent, which continues until the indicator in excursion reaches a second position indicator. Pumping of the first constituent then ceases and pumping of the second constituent commences and continues until the indicator reaches a third position indicator sensor, at which point pumping of the second constituent ceases, the bottom dump valve is activated to a ready state, and the system cycle stops until emptying of the weight-measuring tank into a blend-holding tank occurs. Constant outflow to a production facility is from the blend-holding tank. When a probe measures a predetermined remaining level of blend within the blend-holding tank, the bottom dump valve empties the weighted measuring tank by gravity flow. When the indicator reaches the zero position, the bottom dump valve closes, is deactivated, and the cycle repeats.
REFERENCES:
patent: 2625301 (1953-01-01), Saxe
patent: 3202317 (1965-08-01), Fath et al.
patent: 3306495 (1967-02-01), Wabers
patent: 3362490 (1968-01-01), Maxwell
patent: 3595328 (1971-07-01), Griem, Jr.
Parker Cliff
Start Rick E.
Woldring Bert
Fabri-Coate Company, Inc.
Silverberg Fred A.
Spar Robert J.
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