Retarding valve at a single-tower air drier

Details Retarding valve at a single-tower air drier Retarding valve at a single-tower air drier

1991-12-26

1993-08-10

Schwadron, Martin P.

Gas separation: apparatus

Solid sorbent apparatus

With control means responsive to sensed condition

1375147, B01D 5304, F16K 3112

Patent

active

052344827

ABSTRACT:
A retarding valve at a single-tower air drier for obtaining a controlled time for the flow of regenerating air from an air tank to a desiccant cartridge has a movable valve stem (7), which is provided with a piston (14) having a slightly smaller diameter than a chamber (13), in which it is movable in hydraulic oil (15), so that a narrow circumferential slit for the oil is formed. The valve stem with its piston is biased by a spring (16) from a position--at the beginning of each regenerating cycle--permitting flow through the valve to a position closing off flow through the valve.

REFERENCES:
patent: 859371 (1907-07-01), Coyle
patent: 1850117 (1932-03-01), McMillan
patent: 3104861 (1963-09-01), Heyer et al.
patent: 3730215 (1973-05-01), Conery et al.
patent: 3732889 (1973-05-01), Conery et al.
patent: 3933337 (1976-01-01), Morris et al.
patent: 4006753 (1977-02-01), Ingram, Jr. et al.
patent: 4402335 (1983-09-01), Kemmler
patent: 4900338 (1990-02-01), Shiomi et al.

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