A specially developed high efficiency low power input Induced Draught Fan is fitted to the STIRLING MK7 range of boilers. It has curved radially tipped blades for minimum fly ash build up. The fan impellor is statically and dynamically balanced at the assembly stage for smooth operation in service, with low fan speeds ensuring longevity. The forced draught fans fitted to the stoker are of the motor mounted type and are fitted with silencers
Direct coupled twin multistage boiler feed pumps are mounted on the boiler sub-frame, ensuring 100% standby for boiler feedwater.
The Control Panel houses all the associated electrical equipment, and is mounted on the boiler sub-frame in accordance with the packaged boiler concept. The Mountings and Level Control equipment fitted are of the highest quality supplied by reputable manufacturers. Sootblowing equipment is fitted as a standard feature to lengthen the intervals between tube cleaning, thus extending the boiler availability in service.
1. Chaingrate Stoker – has been developed to efficiently burn a wide range of fuel available in Southern Africa. It is built on a rugged fabricated steel frame, which houses the undergrate air distribution system. The links are of wide design for maximum strength and service life and are made up of only two types, a drive link and a common link. Link rods are of the fully floating type and do not require belling or fitting of washers and split pins but are retained by guide strips and can be easily changed.
The drive links engage with solid high grade cast iron drive sprockets keyed to the drive shaft. Side seals are in heat resisting cast iron or carbofrax as preferred.