Double shell thickener

Details Double shell thickener Double shell thickener

1990-07-09

1992-07-07

Pollard, Steven M.

Receptacles

Stationary tank

220445, 220469, G01M 300

Patent

active

051275406

ABSTRACT:
A double-walled thickener tank has an outer shell bottom and an inner shell bottom spaced to form interconnected or a discrete void space therebetween. An incompressible load-carrying permeable material such as oil-impregnated sand is compacted in the void space(s) 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 leakage fluid drains into an interior space of a double-wall or single-wall discharge cone at the center of the tank where the leak and void spaces are accessed to detect any leaking of fluid from the tank. Various modifications utilize either a replacement of a new inner tank liner, a bottom sheet of impervious material such as a plastic liner; a series of pie-shaped steel sheets forming each bottom; or a grooved concrete bottom, all providing a flat or inclined void space, with or without load-carrying permeable material therein, which is accessed for leak detection.

REFERENCES:
patent: 1670024 (1928-05-01), Day
patent: 3511003 (1970-05-01), Alleaume
patent: 3537608 (1970-11-01), Fallows et al.
patent: 3748865 (1973-07-01), Laverman et al.
patent: 3930590 (1976-01-01), Ebbrell
patent: 3952531 (1976-04-01), Turner
patent: 4374478 (1983-02-01), Second
patent: 4522010 (1985-06-01), Schrader
patent: 4584802 (1986-04-01), Casselman et al.
patent: 4651895 (1987-03-01), Ebert
patent: 4653312 (1987-03-01), Sharp
patent: 4673102 (1987-06-01), Bullock, Jr.
patent: 4714170 (1987-12-01), Scott
patent: 4715513 (1987-12-01), Shelton, Jr.
patent: 4840283 (1989-06-01), Lillywhite et al.
patent: 4971214 (1990-11-01), Lillywhite et al.

Affiliated with

Also associated with

Rating

Double shell thickener does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Double shell thickener, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Double shell thickener will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1824726