Jim Murphy on sun 21 dec 03
Hi gang,
My budget is kinda of tight, so I'm considering assembling my own continuous
mixer - for slowly agitating porcelain-stoneware casting slip after mixing
by blunger - out of a 55-gal plastic drum, high-torque DC gearmotor,
solid-state speed control, special impeller, stainless steel shaft,
couplings, etc.
My questions concern the selection of DC Gearmotor and impeller.
1. (A) I've read commercial "sweeps" operate @ 30-50 rpm so I guess I'll
need a DC Gearmotor that operates in that rpm range. I figure 50-gal of slip
may weigh 350-360 Kg (770-792 Lb) depending on Specific Gravity. How do I
determine how much "torque" is needed by the DC Gearmotor to agitate 50-gal
of slip without overloading ?; (B) Any recommendations on where to get a
decent DC Gearmotor ? (I've been looking at McMaster-Carr's catalog so far.)
2. Likewise, what type/size impeller is ideal for a 55-gal continuous mixer
and where might they be available ?
I'd appreciate any info and/or hints. Please feel free to respond either on
or off-List.
Best wishes,
Jim Murphy
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