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MOTOR AND DRIVE ASSEMBLY
The shaft-mounted
gear reduction is totally enclosed within an oil-bath gear box. The
reduction is designed with easy service and customer convenience in
mind. By simply changing the drive pulley on the motor, you may increase
or decrease the speed to custom-tailor the washing action on your material.
All electric motors are 230-460 Volt, 3-phase. Parts required for routine
maintenance are standard, off-the-shelf components for easy replacement.
SHAFT-MOUNTED
GEAR BOX DRIVE
A greatly improved drive is used on all GreyStone washers. Based on
the use of standard, direct, shaft-mounted speed reducers, the drive
provides several significant advantages.
1.
The drive is fully enclosed, with all gears running in a sealed oil
bath.
2. Maintenance is economical since
only stock reducers are used.
3. The drive is simplified by reducing
the number of shafts, bearings,
and other components.
4. The transmission is highly efficient
because of the direct shaft arrangement,
with V-belt drive to electric motor and belt guard.
5. Falk or Dodge shaft-mounted gear
reduction drives are used
and are readily available.
SHAFTING
The heavy stub of mirror-smooth, heat-treated shafting is fitted into
a stainless steel spacing sleeve. Shaft and sleeve are driven through
a heavy duty rubber gasket that fits snugly between the connecting disc
and tub. A specially designed slinger fits perpendicular to the shaft
between the roller bearing and sleeve and turns with the shaft, adding
further protection to the outside mounted bearing from the seal leakage
which may follow extensive use.
SHAFT
AND FLIGHTS
The spiral-type, half pitch steel flights are welded to a heavy tubular
steel shaft. Each spiral screw flight is formed by a special machine
to ensure a uniform spiral. The shaft flanges are precision ground after
they have been welded onto the heavy tubular steel shaft.
ADJUSTABLE
SCREW SHAFT
The adjustable screw shaft makes a unique design. This will allow you
to control the clearance between the belly pan and screw flights.
STANDARD
NI-HARD ADJUSTABLE WEAR SHOES
Ni-Hard Wear Shoes are standard on GreyStone Coarse Material Washers.
ADJUSTABLE
PADDLE
GreyStone paddles are made of heavy duty Ni-Hard. Paddle mounting bases
are constructed to give years of trouble-free service life. Water is
induced into the tub through the perforated belly pan. Sufficient water
should be used to wash out and carry extraneous material out over the
overflow flume at the lower tub end. Soluble clay and dust from gravel
or crushed stone are eliminated from the material by this abrading washing
action. For tougher washing requirements, more paddles can be added
to the screw shaft to replace the flights. In this application, the
material which is fed into the washer will be retained longer in the
scrubbing area for more thorough cleaning. With the addition of more
paddles on the screw shaft, your capacity will be reduced and horsepower
requirements will be increased. GreyStone Coarse Material Washers are
standard 1/2 pitch screw flights. The 2nd and 3rd screw flights are
replaced with paddles. If additional paddles are needed to meet your
job requirements, the 5th and 6th screw flights can be replaced with
our optional paddle arrangement. For specific or severe washing problems
that cannot be accomplished with a coarse material washer, please refer
to the complete GreyStone line of Log Washers.
EXTERNAL
BEARING
GreyStone Coarse Material Washers have externally mounted pillow block
bearings that are standard, off-the-shelf components for easy replacement.
LARGE
HEAVY DUTY TUB
Strong and rigidly constructed screw washers are designed to provide
years of maintenance-free service. GreyStone tubs are all welded construction
and are made of heavy steel plate with angle iron skid frame. GreyStone
machines have a heavy belly pan which is curved to fit tightly to the
screw shaft. During operation, this feature keeps sand from slipping
back and increases your production. This feature allows you to make
a field adjustment of the clearance between the spiral flight and the
belly pan for closer tolerances.
RISING
CURRENT BELLY PAN
The rising current water enters the pool from the bottom and filters
up, separating fines, dirt and other extraneous matter, which is carried
to the top and forced out with the overflow.
HEAVY
DUTY SKID FRAME
GreyStone washers are equipped with a heavy duty skid frame. Pull a
GreyStone to where it's needed without using a crane…an Exclusive GreyStone
Feature.
SEND
US A SAMPLE
Send us
a sample of your pit run material for a free examination and recommendation
for the best equipment selection to meet your requirements.
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