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The
design of the V Screen makes changing screen cloth a snap. Two 3'
x 6' pieces of screen cloth are joined together with strips along
the 3' edge. The two are then wrapped around the screening cage
and tensioned to it by bolts threaded through the strips. The tensioning
method of mounting the cloth prevent premature wear and tear on
the cloth due to the flexing of wires, allowing the use of cloth
with very fine wire diameters. Rubber strips behind the cloth at
the top and bottom of the drum provide a seal.
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Variable
drum speeds to get the maximum capacity and greatest efficiency
in screening or dewatering, drum rotation speeds range from 60 to
78 RPM with an 1800 RPM motor. This works by using a V-belt with
a variable pitch motor sheave and companion screen sheave. The 60
to 78 RPM drum rotation speed range produces gyrations of from 840
to 1092 pulsations per minute. The entire V-belt drive and variable
pitch sheave is standard equipment for the V Screen.
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The
unique screening action, eliminating violent impact against the
screen cloth combined with the head-on approach of material with
the screen cloth makes the V Screen very easy on screen cloth. Exceptionally
long screen life has been reported by most operators.
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The
drum assembly has six sturdy uprights between the drum top and the
vaned feed distribution plate, and strong channel construction at
the bottom.
A screening cage of large openings is bolted to the uprights through
spacers. The screen cloth is tensioned around the cage.
The vaned feed distribution plate at the top of the drum rotates
in unison with the drum and provides fast uniform dispersal of feed
to the screening surface.
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The
screening drum is fully enclosed in a dust-proof and watertight
housing with easily removable door panels.
A standard 7.5 hp., 1800 rpm, normal starting torque, ball bearing
motor is all that is required for power. You mount it in a vertical
position. No side rails are necessary.
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