Vibrating screens are widely used in sand, mining, and construction material industries. However, during operation, failures may occur. If not handled properly, these issues can reduce efficiency or even damage the equipment. Below are common problems and their solutions.
1. Screen Mesh Blockage
Causes: High moisture content in materials, particle size close to mesh size, or loose mesh tension.
Solutions:
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Choose proper mesh material and aperture size.
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Add cleaning devices or adjust mesh tension.
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Control material moisture content.
2. Vibration Motor Abnormalities
Causes: Bearing failure, phase loss, or loose eccentric blocks.
Solutions:
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Regularly check motor wiring to avoid phase loss.
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Repair or replace bearings.
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Tighten eccentric block bolts and keep balance.
3. Abnormal Noise
Causes: Loose bolts, broken springs, or poor contact with support.
Solutions:
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Inspect and tighten connections.
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Replace damaged springs.
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Adjust clearance between screen body and support.
4. Reduced Screening Efficiency
Causes: Damaged mesh, insufficient vibration amplitude, or uneven material distribution.
Solutions:
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Replace mesh in time.
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Adjust excitation force or screen angle.
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Improve feeding method for even material distribution.
5. Screen Fails to Start
Causes: Power supply issues, motor burnout, or faulty wiring.
Solutions:
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Check power supply voltage.
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Replace motor or repair wiring.
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Ensure control system works properly.
Conclusion
When a vibrating screen malfunctions, always shut down first, then troubleshoot step by step. Regular maintenance, proper operation, and timely replacement of worn parts are the keys to ensuring stable performance and extending service life.
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