Screw Conveyor Flight Design Calculation

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Screw Conveyor Failure Summary

Screw Conveyor Flash

Main Reason:


Screw Shaft Coupling Bolt Loose, Drop And Break

The main reason: uneven force during operation, causing loose bolts, drops or impact breaks.

Treatment: Increase the strength of the bolt joint.

Screw Conveyor Spiral Blade Tear

The main reason: due to foreign matter in the raw materials, etc., the spiral blade can be damaged. In severe cases, the spiral blade and the screw shaft are welded off, forming a spiral blade tear.

Treatment method: the damage of the spiral blade needs to improve the quality and strength of the spare parts. When the spare parts are made, the consistency of the blades should be ensured. The welds should be compact and reliable, avoiding defects such as slag inclusions and pores, ensuring the welding quality and improving the strength of the screw shaft and the transmission shaft.

Screw Conveyor Flange Weld Cracking

Main reason: The joint flange welding failed due to abnormal torque.

Treatment method: Whether it is flange connection or spline connection, the installation position accuracy of the spiral body should be ensured. After installation, the wiring should be debugged to determine the spiral steering, and the sound is abnormal.

After the test run, check the motor, reducer, and bearing temperature rise. After everything is normal, start the manual screw silo gate to gradually feed. After debugging, make the spiral run smoothly.

Spiral Shaft Crack

Main reason: Due to long-term running wear, the torsional strength is reduced, and cracks and cracks are formed.


Spiral Axis Input Shaft Segment Fracture

Main reason: Due to the installation of the Screw Conveyor, the coaxiality of the screw shaft is out of tolerance or the safety factor is low when the shaft is selected.

Treatment method: to improve the problem of fracture of the Screw Conveyor shaft, it is necessary to adjust the coaxiality, and use the anchor positioning to ensure the bearing boxes on both sides of the cylinder are concentric; the material of the shaft head is made of high-strength material.

In actual production, daily maintenance should be done, and the Screw Conveyor should be modified and maintained according to the production needs. When the process changes and exceeds the performance range of the Screw Conveyor, the continuous operation will cause the Screw Conveyor to be damaged quickly, or even meet the production process requirements and affect the normal.

Spare Parts Supply

To deliver spare parts to customer's production sites as fast as possible, SBM has built spare parts warehouses. On receiving customer's call, we take spare parts from the warehouse in the shortest time possible to reduce customer's awaiting time and risk of equipment outage.

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