Buoyed flapper valve

Details Buoyed flapper valve Buoyed flapper valve

1990-08-30

1992-08-25

Dawson, Robert A.

Liquid purification or separation

Tangential flow or centrifugal fluid action

2105122, 554591, 209144, 209211, 137424, 137435, 137448, B01D 2126, F16K 3118

Patent

active

051416441

ABSTRACT:
A buoyed flapper valve comprises a flapper which is capable of closing an exit of a dipleg or standpipe, which is also connected to a counterweight and a float. The float has sufficient buoyancy to as to overcome the weight of the counterweight when the valve is submerged in a bed of particulate material. The flapper valve is preferably employed as a dipleg check valve within a reactor, e.g., a riser reactor system, and can be used under a variety of operating conditions including both submerged and non-submerged operating conditions.

REFERENCES:
patent: 1349267 (1920-08-01), Craig
patent: 1457314 (1923-06-01), Mueller
patent: 4055486 (1977-10-01), Choi et al.
patent: 4702271 (1987-10-01), Giehl

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