Fluid handling – Self-proportioning or correlating systems – Self-controlled branched flow systems
Patent
1985-07-19
1987-09-01
Nilson, Robert G.
Fluid handling
Self-proportioning or correlating systems
Self-controlled branched flow systems
55273, 13762414, 13762418, B01D 4604
Patent
active
046901663
ABSTRACT:
Disclosed are a compressed air reversed flushing system and sequencing valve. The flushing system includes a compressed air reservoir that is supplied with compressed air by an air compressor. The system includes a plurality of flushing valves connected to the reservoir. The flushing valves are adapted to open sequentially at a selected reservoir pressure. The volume rate production of the compressor is adjustable so as to control the lapse time between flushing events. The sequencing valve includes a valve body having a cylindrical bore. A piston is slidingly disposed in the bore to divide the bore into first and second chambers. An inlet supplies fluid pressure to the first chamber to act on the piston and drive it toward the second chamber. A plurality of inlets to the second chamber receive pressure from the flushing valves. Each second chamber inlet is provided with a valve. The piston includes an operator pin that is operable to open one of the second chamber valves. Axial movement of the piston in the bore results in stepwise rotation of the piston, which in turn causes the operator pin to open the second chamber inlet valves sequentially.
REFERENCES:
patent: 1191774 (1916-07-01), Douglass
patent: 2788170 (1957-04-01), Kato
patent: 3332217 (1967-07-01), Rymer
patent: 3521430 (1970-07-01), Vanderlip
patent: 3540193 (1970-11-01), Pausch
patent: 4447193 (1984-05-01), Bunn
patent: 4465497 (1984-08-01), Howeth
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