Floating cover tank with guides for vertical displacement of the

Details Floating cover tank with guides for vertical displacement of the Floating cover tank with guides for vertical displacement of the

1985-12-26

1987-03-10

Castel, Benoit

Liquid purification or separation

With means to add treating material

Directly applied to separator

210DIG9, 435287, 48197A, 220222, 220224, 220227, B65D 8846, B65D 8834, C02F 1104

Patent

active

046489681

ABSTRACT:
A collecting and treating tank which holds liquid and in which a vertically movable cover floats on the liquid or on a gas layer above the liquid, comprising a tank having a vertical cylindrical circular wall, a bottom at and joined to the wall, and a circular cover which fits loosely inside the circular wall so that it is vertically displaceable with change in liquid and/or gas volume beneath the cover; and a plurality of cover guides, spaced radially around the cover edge, which are adapted to maintain the cover periphery spaced from the tank wall; said cover guides being faced with a solid polymeric layer which is slippery and has a low coefficient of friction so that the cover is readily displaceable vertically solely with change in volume of liquid, gas or both beneath the cover.

REFERENCES:
patent: 2050915 (1936-08-01), Beddoes et al.
patent: 2600237 (1952-06-01), Graham
patent: 2919047 (1959-12-01), Fino
patent: 3185335 (1965-05-01), Lecler
patent: 3307733 (1967-03-01), De Bock
patent: 4154358 (1979-05-01), Nayler et al.
patent: 4378437 (1983-03-01), Cook
patent: 4391705 (1983-07-01), Cook et al.

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