Liquid purification or separation – Flow – fluid pressure or material level – responsive – Proportionate feed means
Patent
1985-02-22
1986-06-17
Adee, John
Liquid purification or separation
Flow, fluid pressure or material level, responsive
Proportionate feed means
2101982, 417 18, B01D 1508
Patent
active
045954950
ABSTRACT:
A solvent delivery system (10) has first and second pistons (92, 94) and cylinders (58, 68) connected to first and second cams (110, 112). The cams (110, 112) each have a ramped portion (150, 162) and an abrupt step (152, 164). The first cylinder (58) is connected to solenoid valves (44, 46, 48) to fill the first cylinder with solvent components during movement of cam follower (104) along ramped portion (150) of the first cam (110). Spring (140) urges the first piston (92) forward into first cylinder (58). Movement of the cam follower (104) over the step (152) of the cam (110) moves the piston (92) forward abruptly to force the solvent components from cylinder (58) into second cylinder (68). Spring (178) urges piston (94) back in cylinder (68). The second cam (112) is reversed relative to first cam (110). Movement of cam follower (106) over abrupt step (164) of second cam (112) moves second piston (94) back abruptly in cylinder (68) to receive and mix the solvent components in the cylinder (68). Movement of cam follower (106) along ramped portion (162) of cam (112) moves piston (94) forward to force the solvent mixture from the second cylinder (68). A third piston (96) and cylinder (74) has a lesser volume than the first and second cylinders (58, 68). A third cam (114) and cam follower (108) move the third piston (96) back in cylinder (74) when second piston (94) moves forward in second cylinder (68). The second cylinder (68) delivers the solvent mixture to outlet (80) and fills third cylinder (74) while second piston (94) moves forward and third piston (96) moves back. The third cylinder (74) delivers the solvent mixture to outlet (80) while the third piston moves forward, the solvent component fills the first cylinder (58) and the first piston (92) and cylinder (58) fill the second cylinder (68). Check valves (60, 72, 78) prevent backflow in the system.
REFERENCES:
patent: 4045343 (1977-08-01), Achener et al.
patent: 4128476 (1978-12-01), Rock
patent: 4311586 (1982-01-01), Baldwin et al.
patent: 4492524 (1985-01-01), Koch et al.
Carleton Joseph G.
Yotam Reuben
Adee John
Eldex Laboratories, Inc.
Higgins Willis E.
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