Circular clarifier with retractable cover
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Dec 4, 2001
Grant Date -
N/A
app pub date -
Sep 21, 2000
filing date -
Nov 19, 1999
priority date (Note) -
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status (Latency Note)
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Abstract
The clarifier cover has a shape defined by a low profile circular segment of revolution around the central column of the clarifier, for maintaining the volume of gas thereunder minimum. In another aspect, the support structure of the cover is made of a plurality of ring trusses disposed in a circular array and defining a circle, concentric with the circular wall of the clarifier, and a radial array of outer trusses each having an outside end mounted to the wall of the clarifier and an inside end mounted to the plurality of ring trusses. A series of inner trusses are individually affixed in an overhung mode to one of the outer trusses, such that the loading applied to the central column of a clarifier by the cover structure is minimal or negligible. The trusses define an array of triangular frame sectors. A flexible sheet sector affixed to each frame sector, and at least one of the flexible sheet sectors has a retractable section which is removably affixed to one of the triangular frame sectors and to the clarifier wall.
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