Double shell thickener

Details Double shell thickener Double shell thickener

1987-11-23

1989-06-20

Pollard, Steven M.

Receptacles

Outlet or junction box type

Sectional receptacle

220445, 220469, G01M 300

Patent

active

048402834

ABSTRACT:
A double-walled thickener tank has an outer shell bottom and an inner shell bottom spaced by spaced bars with interconnected or discrete void spaces between the bars. An incompressible load-carrying permeable material such as oil-impregnated sand is compacted in the void spaces to provide a support for the inner shell bottom and confined fluid in the tank. Any leakage of fluid from the tank through the inner shell bottom is initially confined in the void spaces and conveyed down a slight slope on the top surface of the outer shell bottom so the leaking fluid drains into an interior space of a double-wall discharge cone at the center of the tank where the leak and void space are accessed to detect any leaking of fluid from the tank.

REFERENCES:
patent: 2520883 (1950-08-01), Kornemann et al.
patent: 2531159 (1950-11-01), Rowell
patent: 3059804 (1962-10-01), Wissmiller
patent: 3320969 (1967-05-01), Gordon
patent: 3337079 (1967-08-01), Clarke et al.
patent: 4653312 (1987-03-01), Sharp

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