B&C Technologies DI-475 Industrial - Manual (Page 29)

SECTION 6
COMPONENT SYSTEM DESCRIPTIONS
A. BASKET/TUMBLER DRIVE SYSTEM
The basket (tumbler) is supported and driven by eight (8) 11-inch diameter drive wheels.
Two (2) of these wheels are attached to 50 mm. diameter idler shaft, while the other two (2)
are attached to a 50 mm. diameter drive shaft. Each of the wheels is fastened to the shafts
by a keyless locking bushing. The trantorque is made up of three pieces: an inner collar,an
outer sleeve, and a locking nut. The inner and outer elements have matching opposite
tapers. As a result, when the nut is tightened, the trantorque contracts onto the shaft and
expands into the drive wheel locking the wheel onto the shaft. No key is required.
The idler and drive shafts are each supported by two- (2) 50 mm. diameter plummer block
bearings. These bearings sit on slotted support channels and can be moved inward or
outward by the adjustment bolts to raise or lower the basket (tumbler). The Drive shaft sticks
out through the side of the dryer and has a sprocket No.60-3 Attached to it with taper lock
bushing. This sprocket is connected to a helical geared motor The drive shafts is supported
by two- (2) 50 mm. diameter plummer block bearings. These pillow blocks sit on a slotted
platform, and they can be moved forward and back by loosening or tightening the bearing
adjustment bolts. this movement is needed to maintain proper tension on the sprocket that
run from the helical geared motor idler to the drive shaft.
The helical geared motor sits on an adjustable base so that the helical geared motor can be
moved forward and back, allowing proper tension to be maintained on the sprocket.
B. BASKET/TUMBLER
The basket (tumbler) is made of 14-gauge stainless steel preferred panels, four (4) stainless
steel ribs, and two (2) outer basket/tumbler rings made of rolled steel angle Iron that has
turned
on a lathe for smoothness, The basket (tumbler) is a completely welded assembly so the
perforated panels are not removable.
C. AIR BLOWER DRIVE SYSTEM
The impeller (fan) used in the DA-475 dryer is a 28-inch diameter forwardly Inclined
squirrel cage impeller (fan) wheel. t spins in a counterclockwise direction looking at the back
of the blower housing.
The impeller / fan shaft is mounted in two (2) 55 mm. diameter pillow block bearings, and the
shaft is driven by two (2) BX-section V-belts connected to the blower motor.
The blower motor is mounted on an adjustable base. The motor position can be easily
adjusted
so that proper tension can be maintained on the V-belts.