60t/H Automatic Brown Coal Fired Steam Boiler Reciprocating Step Grate for Pellet Boiler

Deformation or fracture of grate plates: High temperature or mechanical stress can cause damage to the grate plates, resulting in jamming of the moving mechanism. Ash accumulation or coking: Poor combustion leads to blockage of grate gaps. Drive mechanism failure: motor, reducer or connecting rod mechanism damaged. Fuel particles are too large: large pieces of coal or foreign objects are stuck between the grate. Solution: Stop the machine, inspect and replace the damaged grate plates, clean the

Wear or excessive clearance of grate plates: After long-term use, the grate plates wear out, leading to coal leakage. Fine fuel or low moisture content: Powdered coal is prone to leakage from gaps. Improper installation: The grate plates are not tightly fitted, resulting in significant gaps. Solution: Replace worn grate plates, adjust installation clearance (standard 1-3mm), control fuel particle size (avoid excessive powder).

Material not resistant to high temperatures: Ordinary cast iron grate plates are prone to oxidation and deformation at high temperatures. Local overheating: Uneven air distribution leads to high temperatures in some areas. Shutdown cooling too fast: Cold air rapidly enters, exacerbating the oxidation of grate plates. Solution: Use heat-resistant alloy grate plates (such as high chromium cast iron), optimize air distribution, and slowly cool down when shutting down the furnace.

Loose drive mechanism: worn or broken connecting rods, bearings, or fixing bolts. Shedding or collision of grate plates: Failure of fasteners causes grate plates to collide with each other. Unstable foundation: Loose boiler bracket or grate base. Solution: Tighten bolts, replace worn bearings, check the fixing of grate plates, and reinforce the foundation.

Motor or gearbox malfunction: unstable voltage, motor damage, or gearbox gear wear. Uneven thickness of fuel layer: Uneven feeding leads to changes in resistance. Excessive resistance of grate plates: coking or ash accumulation increases movement resistance. Solution: Check the motor and reducer, adjust the feeding uniformity, and clean the ash accumulation in the grate.