PRAB CONTINUOUS CHIP PROCESSING SYSTEM

This system will automatically reduce the volume of turnings and separate
oil from the material at an approximate rate of 2,000 lbs per hour.
The system operates as follows
Wet chips and turnings are brought to the processing system in customer's
3/4 cubic yard chip container. The container is secured in the system fe
ed
dumper and elevated, allowing the wet chips and turnings to be dumped int
o
the hopper of the shredder feed conveyor. The feed conveyor meter feeds
the
turning into the turning shredder. The shredder reduces the bushy/stringy
turnings to a shovel grade size while rejecting bar ends from the size
reduction process. All material then flows into the parts separator.
The separator diverts bar ends and tramp metal from the material flow
while allowing the wet chips to be meter fed into the diagonal-shaft
chip wringer. The chip wringer removes oil from the chips by centrifug
al
force and pneumatically conveyors the dry steel chips to the final stor
age area.
Oil that is reclaimed by the chip wringer is collected in the Wringer
settling tank. Excess oil that drains from the shredder feed conveyor
is contained in its drip pan and pumped to the settling tank. Oil
that is collected in the tank is pumped into existing holding tank or
oil supply line.
The electrical control panel controls the operating functions of the
process system while monitoring meterial flow to prevent an overload
condition. Shoul a jam-up or overload occur, interlocks will
de-energize the equipment preventing damage to the system.
Cont. on

(cont.)
The system consists of the following items
Dump Hopper & Feed Conveyor Screw conveyor, 12" diameter,
constructed from 3/16" thick formed steel. Powered by a 3/4
HP, TEFC motor driving a speed reducer to mainshaft of conveyor,
protected with shear pin-hub assembly. Unit includes supports,
large capacity receiving hopper, top cover, discharge chute and
no-rotation device for total system interlock. A drip pan to contain
excess oil and sump pump to pump excess oil to the wringer settling
tank is included with the conveyor.
Turning Shredder
Dual counter-rotating shaft design with machined cutter disc and spacer
combinations to produce a shearing, ripping, and tearing action. Shredde
r
will be powered by a 7 1/2 HP, TEFC, 460/3/60 motor.
Parts Separator Model "R" includes 1/4 HP rotary feed airlock to
meter feed chips into blower powered air stream. Piece part, bar end
discharge chute, airlock infeed chute, airlock, casing and chip feed
path constructed of 3/16" thick abrasion resistant steel. Blower
powered by a 1 HP, TEFC motor.
Diagonal-Shaft Chip Wringer Model 24-AD, with an externally mounted
standard 15 HP, T-Frame motor drives wringer through v-belt and sheave
arrangement. Separator bowl linor and activator vanes are abrasion
resistant steel. Oil separation screen is self-cleaning #304
stainless steel wedgewire material. All wear areas within the main
housing are abrasion resistant steel with chip impact ring being 1/2"
thick manganese steel. Main door is bolted for ease of inspection.
Wringer is mounted on rubber lattice isolation pads and is attached
to a heavy-duty structural steel stand.
Discharge portion is provided with a 45 deg. Ni-hard bend section.
Balance of discharge piping includes 40' schedule #40 piping and
manually operated pivet chute. Pipng supports by others.
Cont. on Page 3

(cont.)
Wringer Settling Tank 150 Gallon capacity. Tank constructed
of #10 gauge hot rolled steel. Included is a hinged top cover
and sloped bottom to allow manual cleaning of settled material
from bottom of tank. Oil pumped from tank by an air operated,
manually controlled pump. Tank to have a high-level switch
which will illuminate an indicator light on the electrical
control panel door.
Electrical Control Panel Includes NEMA 12 enclosure with main
panel disconnect, Allen-Bradley programmable controller,
maintenance/normal selector switch, start/stop push buttons for
each piece of equipment, and amber running lights for each drive
motor. In normal mode, all push buttons must be pushed in correct
sequence for total system start-up. Normal mode provides interlocks
to protect all equipment against jam-ups. All conveyors