Design Features Proven in Highly Abrasive Heavy-Duty Service
is selected to provide maximum strength while processing superior abrasion-resistant characteristics. Heat treated round link chain posesses maximum tensile and lateral strength and shock load resistance. Wear-resistant characteristics provide low wear rates while maintaining constant strength levels. Custom chain designs available for special high temperature and corrosive environments.
Heavy Duty Conveyor Flights
are attached to the chain with connector links, forming easily replaceable, modular assemblies. Flight height and width are selected based on ash properties, conveyor speed, and angle of inclination. Special flight designs feature reinforced heavy load capacity, high abrasion resistance, and low adhesion polymer materials for special conveying applications.
Conveyor Head Sprockets
and idler pulleys are hardened for extended life and mounted on high strength shafting, supported by external-mounted roller bearings. Only rolling contact occurs with the chain, extending the wear life of all components. Special split sprocket and replaceable tooth segment designs are available to facilitate maintenance.
Low-Speed High-Torque Drives
are sized for maximum conveying requirements and heavy shock loading. Mechanical overload protection and reversing capabilities are standard. Optional mechanical variable speed drives permit precise matching of conveyor speed to actual ash rates. This flexibility results in lower wear rates and the ability to meet surge requirements.
Heavy Duty Troughs
on submerged bottom ash conveyors are constructed of heavy wall plate with external stiffeners to withstand impact and shock from slag and clinker falls. Protector skirts inside the conveyor shield the chain from impact and prevents material from entering conveyor pulleys and drive sprockets, minimizing wear and maximizing conveyor reliability. Top conveying compartment accommodates large slag falls, start-up under full trough conditions. Lower return compartment allows for full continuous chain and flight inspection on line. All surfaces in rubbing contact with abrasive material are lined with replacement hardened liners. These are selected to suit operating conditions, maximize life, and simplify replacement.
External-Mounted Roller Bearings
support conveyor head sprockets and transition idler pulleys. Dust seal housings and water purge seal systems protect bearings from dust or water invasion and maintain conveyor seal integrity. All seals and bearings are accessible from the exterior for ease of service.
Chain Take-Up Assemblies
provide spring-loaded manual or cylinder-operated automatic tensioning of chain slack during conveyor operation. On enclosed conveyors, dust-tight shaft seal housings and sliding seal plates work in unison to maintain air-tight, dust-tight seal as the take-up moves over its full travel length.