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US 5,308,488 AGranted
Drum structure for corrugated type rotary filters
OwnerPhilip N. Nelsoninventor
Life of this patent
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Abstract
An improved drum structure for a corrugated deck type rotary drum filter is provided that increases filter efficiency by eliminating transverse filtrate flow in the drain channels of the drum. Each drain channel is divided into sub-channels using at least one solid grid. The sub-channels drain into a single bucket associated with the drain channel. A drain slit is provided above each sub-channel in the corrugated material that covers the outer surface of the drum.
Claims2
A drum structure for a rotary drum filter comprising:
- a cylindrical shell;
- a plurality of longitudinal bucket dividing grids located on an outer surface of a cylindrical shell, wherein each pair of adjacent longitudinal bucket dividing grids define a drain channel;
- at least one longitudinal solid grid located in the drain channel, wherein the longitudinal solid grid forms multiple sub-channels within the drain channel and prevents filtrate flow between the sub-channels;
- an outer surface comprising a corrugated material spaced from the outer surface of the cylindrical shell by the longitudinal bucket dividing grids, wherein the corrugated material has a drainage slot located above each sub-channel;
- and a single bucket coupled to the multiple sub-channels.
2 more elements
Dependencies are inferred from the claim text.