... 4.Drying roomParts: delivery band device, drums, drying room, fan, heat-exchanger, delivery roller device, gear motor, temperature ... the last roller mill delivered to the drying room by delivery band, there are two parts in ... exhaust system and temperature control system. A fan and a heat-exchanger make up a hot ... system. Gear motor and strong blowing of the fan make hot air throng wool tops rapidly and ...