The reason why the screw conveyor is not working

The failure of a shot-blasting machine's conveyor can be caused by shot accumulation (clogging), bending of the screw shaft, or a weld failure at the screw shaft head.

When shot—such as the steel shot used in the machine—causes a blockage, it jams the screw conveyor and renders it inoperable. To resolve this, the machine must be shut down and cleared of the shot. During cleaning, excess shot must be thoroughly removed to prevent the blockage from recurring.

Prolonged operation or improper use can cause the main shaft or the screw flights to bend. In such cases, the screw conveyor must be removed to straighten the shaft or grind the outer diameter of the flights. These corrective measures should be performed by professionals to avoid irreversible structural damage.

A weld failure at the screw shaft head is another common cause of malfunction. If this occurs, the conveyor must be removed for re-welding to ensure a secure joint. Magnetic particle inspection can be used to verify the quality of the weld.

In conclusion, resolving conveyor malfunctions in shot-blasting machines requires troubleshooting and repairs addressing issues such as shot blockages, bent shafts, and weld failures. Throughout the repair process, safety protocols must be strictly followed to prevent equipment damage or personal injury resulting from improper handling.