Mining machinery, biomass power plant, cantilever shaft, helical shaft with helix

Nov 12,2021

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The properties of biomass also cause severe wear on the blades at the head of the screw feeder. After a period of operation, the circumference of these blades tends to decrease, significantly reducing the material-handling efficiency. This often leads to uneven feeding, material bridging, and even blockages—issues that can disrupt the stable operation of the boiler. Based on the wear cycle, it’s recommended to replace the screw feeder blades annually, or alternatively, to repair them every six months by patching, rebuilding the wear-resistant layer through re-welding, and reinforcing the root welds. This proactive maintenance helps prevent blade tilting, cracking, or detachment due to inadequate upkeep.

The properties of biomass also cause severe wear on the blades at the head of the screw feeder. After a period of operation, the circumference of these blades tends to decrease, significantly reducing the material-handling efficiency. This often leads to uneven feeding, material bridging, and even blockages—issues that can disrupt the stable operation of the boiler. Based on the wear cycle, it’s recommended to replace the screw feeder blades annually, or alternatively, to repair them every six months by patching, rebuilding the wear-resistant layer through re-welding, and reinforcing the root welds. Such preventive maintenance ensures that blade misalignment, cracking, or detachment does not occur due to inadequate upkeep.

When repairing the helical conveyor's head blades, ensure complete repairs from end to end—avoid partial or segmented repairs altogether. This prevents uneven material flow and excessive localized stress that could damage the equipment due to inconsistent blade circumferences. Additionally, when welding the helical conveyor, select appropriate electrodes based on the base material, weldment, and wear-resistant layer to avoid improper electrode usage, which might lead to poor metal fusion or reduced tensile strength, ultimately causing equipment failure.

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