Air pulse discharge control valve for fluidizing dry particulate

Details Air pulse discharge control valve for fluidizing dry particulate Air pulse discharge control valve for fluidizing dry particulate

1990-04-11

1991-09-17

Focarino, Margaret A.

Conveyors: fluid current

Pulsing fluid current

406 91, 406136, 406138, 137469, 137537, 13762414, B65G 5322, B65G 5338, B65G 6906

Patent

active

050490087

ABSTRACT:
A self acting pressure air pulse control valve for use with fluidizing and pneumatic conveying systems for dry particulate material comprises a housing having a chamber in which a plate type closure member and an actuating piston are disposed and interconnected by an elongated actuating rod. A spring engages the actuating rod through a pivotally supported lever and biases the closure member toward a closed position. Pressure air acts across the face of the closure member to allow the valve to crack open whereupon pressure air acting on the larger actuating piston face snaps the valve to the fully open and unrestricted flow position. A reduction in pressure of the air flowing through the valve allows the biasing spring to reclose the valve to repeat its operating cycle.

REFERENCES:
patent: 3861753 (1975-01-01), Lesk et al.
patent: 3976232 (1976-08-01), Heidebroek
patent: 4118074 (1978-10-01), Solt
patent: 4165820 (1979-08-01), Dugge et al.
patent: 4591075 (1986-05-01), Eriksson

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