Products

ROTARY CASCADE DRYER

General:

The complete drying plant compromises Rotary Cascade Dryer, Air Heater, Dryer Inlet Hood, Exhaust Hood, Exhaust

Air Fan & Ducting and all necessary Controls.

Duty:

To Dry about 750 Kg/hr. of Chilly Flakes from approximately 20% initial moisture to 8-10 % final moisture.

moisture.

Dryer Drum:

3 Ft Diameter X 28 Ft. long dryer drum fabricated in Stainless Steel plate SS-304, with internal flights and lifters

fabricated and bolted to Stainless steel angle sections welded to the shell plates to ensure adequate contact

between the drying air and the material being processed.

The drum is fitted with two cast or forged steel tires, mounted on carbon steel spacer blocks fitted to a reinforcing

band. The tires run on four cast or forged steel support rollers shrunk to fit on steel shafts with shaft-mounted

spherical roller bearing Plummer blocks. A segmental cast steel chain ring is fitted around the periphery of the dryer

drum.

Support Frames:

The complete dryer drum assembly is supported on two fabricated carbon steel roller support frames, the feed ends

support frame carrying the locating roller assemblies. Both roller support frames are fitter with safety guards.

Drum Drive:

The dryer drum is driven by a T.E.F.C. electric motor through a V-belt drive, gearbox, pinion, and chain to the drum

drive chain wheel. The motor, gearbox, V-belt, etc. are mounted on a fabricated carbon steel baseplate. All drives are

completely enclosed in suitable safety guards.

Air Heater:

The drying air is provided using Electrical Operated, firing into a refractory lined carbon steel combustion

chamber connected to the dryer inlet end hood. It can also be operated with an Electrical Heater of 30 KiloWatts

rating.

Inlet End Hood:

The inlet end of the drum is enclosed with a Stainless steel fabricated enclosure, complete with a labyrinth seal

and stainless steel material inlet chute. The inlet hood is supported by a suitable rolled steel section support

structure.

Outer End Hood:

The outer end of the drum is enclosed with a carbon steel fabricated hood complete with an inspection access

door, and exhaust air outlet chute. A labyrinth-type flexible seal is fitted to the rear hood plates around the drum

opening. The outlet end is supported by a suitable rolled steel section support structure.

Exhaust Air Fan:

The exhaust air is drawn from the dryer by a centrifugal fan, complete with an electric motor, V-belt drive, and drive

guard.

Exhaust Air Ducting:

The exhaust air from the dryer is conveyed via a Stainless steel duct from the outlet end hood to the cyclone and

from the cyclone to the exhaust fan. A manually operated butterfly-type valve damper is fitted in the exhaust duct

between the cyclone and the exhaust fan.

Control System:

Inlet air temperature is measured using a thermocouple located in the inlet end hood connected to a

temperature indicator/recorder. Exhaust air temperature is measured by a thermocouple located in the exhaust air

duct connected to a temperature indicator/recorder. The Electrical output is controlled using a suitable

Thermostat via a suitable transmitter from either of the two temperature indicator controllers. All necessary motor

control gear, relays, overloads, etc., and temperature indicators/recorders are housed in a carbon steel control

cabinet which will be prewired for correct sequential start-up and operation of the plant.