No. 992 is an electrically-heated, 260ºC two-zone belt conveyor oven from Grieve, currently used for drying and curing ceramic cement at a customer facility. The 48 KW heater (24 KW per zone) are installed in Nichrome wire elements to heat the oven chamber, while 4000 CFM (2000 CFM in each zone) are provided by two 2-HP recirculating blowers with vertical downward airflow to the workload.
Each of the two work zones in the Grieve belt conveyor oven consists of a 2 ft long insulated, unheated entrance vestibule; 4 ft long insulated heat zone with recirculating airflow; 2 ft long insulated, unheated exit vestibule; 1 ft long open zone; 5 ft long cooling zone and 1 ft long open belt loading and unloading zone.
The conveyor belt is 30 in. wide, 1 x 1 in. high carbon steel flat wire, powered by a 1/3-hp motor drive, variable from 0.5 to 10 ipm.
Also onboard the oven are two 16 in. diameter tubeaxial fans, each driven by a 3/4-hp motor to push/pull air through the cooling zones.
The conveyor oven also features 4 in. insulated walls, aluminized steel interior and exterior, plus two doors for access to the workspace and heating chambers.