Vibrating Screen Maintenance Guide
Vibrating screens are critical for efficient size classification. Regular maintenance ensures consistent screening efficiency and extends equipment life. This guide covers essential maintenance tasks and troubleshooting.
Daily Inspection Checklist
Visual Inspection:
- Check screen cloth for tears, sagging or blinding
- Inspect tensioning mechanism
- Look for material buildup on deck and frame
- Check for loose bolts or structural damage
- Verify all guards are secure
Operational Checks:
- Listen for unusual sounds
- Check vibration amplitude
- Monitor power consumption
- Verify discharge chutes are clear
Screen Cloth Care
Screen cloth is the wearing surface that directly performs screening. Proper care extends cloth life and maintains efficiency.
When to Replace Screen Cloth:
- Tears or holes allowing undersize to pass
- 80% of openings blocked by blinding
- Excessive stretching or loss of tension
- Corrosion or chemical attack
Replacement Procedure:
- Remove old cloth completely
- Clean deck surface
- Install new cloth with proper tension
- Ensure even tension across full width
- Check that no gaps exist at edges
Bearing Maintenance
Screen bearings operate under high loads at high speed. Proper maintenance prevents premature failure.
Lubrication:
- Grease-type: Lubricate weekly with proper grease gun
- Use 2-3 pumps — over-greasing damages seals
- Use specified grease type for temperature range
- Wipe fitting before injecting grease
Bearing Replacement:
- Replace when rough, noisy or hot
- Check shaft for wear before installing new bearings
- Press bearings on — never hammer
- Fill bearing with grease before installation
Vibrating Screen Maintenance Guide
Vibration Adjustment
Screen vibration affects capacity and efficiency. Adjustment is done through counterweights on the vibrator.
Increasing Amplitude:
- Add weight to counterweights
- Do this in small increments (5-10%)
- Check that structure can handle increased vibration
Decreasing Amplitude:
- Remove weight from counterweights
- May be needed for finer screening
Troubleshooting Guide
Poor Screening Efficiency:
- Check for blinding — clean or replace cloth
- Verify feed rate is correct
- Check that feed is distributed evenly
- Inspect for proper vibration amplitude
Excessive Vibration:
- Check counterweight settings
- Verify all bolts are tight
- Check for damaged components
- Inspect isolation mounts
Unusual Noise:
- Check bearing condition
- Look for loose components
- Verify all fasteners are tight
- Inspect for material impact points
WSHT provides comprehensive screen media and vibrating screen aftermarket support including screen cloth, bearings and complete repair services.
