B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
182/60, 18/962
B01D 33/60 (2006.01) D21C 9/06 (2006.01) D21D 1/40 (2006.01)
Patent
CA 1213709
SHOWER PIPES FOR ROTARY DRUM FILTER ABSTRACT OF THE DISCLOSURE A shower pipe for a rotary drum filter ha; square cross-sectional shape defined by top, bottom an- side walls. The sidewalls and a pair of lengthwise- extending continuous diffusion flanges depending from tile bottom wall of the pipe stiffen the pipe against sag for placement at a 12 o'clock position spanning the filter drum. The pipe is formed of fiberglass rein- forced plastic in two longitudinally-divided hollow sections in a pair of mirror image, trough-like molds. Each section has a pair of interconnection flanges for mating the sections together. The interconnection flange extends normally to the sidewalls to stiffen the pipe when the bottom wall of the pipe is vertically- oriented for placing the pipe at a 9 o'clock position along one side of the filter drum. Glass rods are secured in the interior corners of the pipe to provide diagonal rigidity, for placing ther pipe at, e.g., a 10-11 o'clock position between the top and side of the filter drum. Before assembly of the sections, funnel- shaped discharge holes are formed in two staggered rows the bottom wall of the lower section. The outer surface of the bottom wall is molded so that the diffus- ion flanges can be precisely aligned tangentially with the outlet side of the discharge holes.
429677
Gl&v / La Valley Industries Inc.
Oyen Wiggs Green & Mutala Llp
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