Cleaning and liquid contact with solids – Apparatus – Having self cleaning means
Patent
1995-04-12
1996-12-03
Coe, Philip R.
Cleaning and liquid contact with solids
Apparatus
Having self cleaning means
134111, 210167, 210411, 210422, A47L 1542, B01D 2910, B01D 2966
Patent
active
055797903
ABSTRACT:
A filter screen assembly is provided which includes a housing, a filter screen, and two valve or check balls. The housing has two interior walls, each having openings therein which divide an interior space of the housing into top, center, and bottom chambers. A first inlet and a first outlet open into the top chamber and a second inlet and a second outlet open into the bottom chamber. The filter screen is horizontally disposed within the center chamber. One check ball is located in the top chamber and is biased to close the first inlet by a bottom inclined surface of the top chamber. The check ball is forced to substantially close the first outlet when fluid flows in the first inlet. The other check ball is located in the bottom chamber and is biased to close the second inlet by a bottom inclined surface of the bottom chamber. The check ball is forced to substantially close the second outlet when fluid flows in the second inlet. The filter screen thereby filters fluid entering the first inlet and exiting the second outlet and is automatically cleaned or backflushed by fluid entering the second inlet and exiting the first outlet.
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Dries John E.
Edwards James M.
Coe Philip R.
White Consolidated Industries, Inc.
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