1. Blockage failure
reason:
If the moisture content of the conveying material is too high or the viscosity is too high, it is easy for the material to stick between the spiral blades and the casing, causing blockage.
The feed rate is too fast and exceeds the conveying capacity of the screw conveyor.
The gap between the spiral blade and the casing is too small, which can easily cause material jam.
An unreasonable installation angle of the conveyor, too large or too small an inclination angle may cause material blockage.
Symptoms: Materials accumulate in the conveyor and cannot be transported normally, the motor load increases, and the motor may even burn out.
2. Leakage failure
reason:
The seal is damaged or aged and loses its sealing function.
The bolts at the connection of the casing are loose, causing the gap to increase and material leakage.
The gap between the screw shaft and the casing is too large, and the material leaks from the gap.
Symptoms: Materials leak out from the gaps in the conveyor, polluting the environment and causing waste of materials.
3. Screw shaft fracture failure
reason:
The screw shaft is subjected to large torque and load for a long time and is prone to fatigue fracture.
The conveying material contains hard foreign objects, such as iron blocks, stones, etc., which get stuck in the spiral blades and cause the spiral shaft to break.
The screw shaft is made of poor material or has a defective manufacturing process, resulting in insufficient strength.
Symptom: The screw conveyor stops running and cannot transport materials.
4. Drive device failure
reason:
Motor failure, such as motor burnout, motor bearing damage, etc.
Reducer failure, such as gear wear, reducer oil leakage, etc.
The transmission belt (or chain) is broken or loose, etc.
Symptoms: The drive device cannot work properly and the screw conveyor loses power.
5. Suspension bearing damage
reason:
The material causes great wear on the suspension bearings, which may lead to bearing damage after long-term use.
Poor lubrication: The suspension bearings lack sufficient lubrication and are easily damaged.
Improper installation, inaccurate installation position or loose installation of the suspension bearing can easily cause damage due to external forces.
Symptoms: The screw conveyor produces abnormal noise and vibration during operation, and the conveying efficiency is reduced.
If you want to know the common faults of screw conveyor machines, please contact Changrong, we will do our best to help you !
