Sand washing machines are as the core equipment for cleaning sand and gravel aggregates, it is widely used in the purification of machine-made sand and natural sand. Through the dual effects of hydraulic impact and mechanical friction, it can effectively remove dirt, dust and other impurities attached to the surface of sand particles, while destroying the water vapor wrapping layer between sand particles, significantly improving the cleanliness and looseness of sand. In production, sand washing machines will inevitably encounter various problems.
1. Machine Cannot Start
Causes:
Insufficient voltage.
Belt slippage.
Reducer failure.
Motor damage.
Solutions:
Ensure stable power supply (check voltage stability or upgrade electrical infrastructure).
Tighten or replace loose/worn belts.
Inspect and repair the reducer (e.g., gear alignment, lubrication).
Replace the motor if damaged.
2. Abnormal Machine Noise
Causes:
Bearing damage.
Reducer failure.
Wheel bucket body rubbing against the shell.
Solutions:
Replace damaged bearings immediately.
Repair reducer (e.g., fix gear meshing issues).
Adjust the wheel bucket’s position to eliminate friction with the shell.
3. Excessive Bearing Temperature
Causes:
Contaminated or degraded grease.
Improper grease quantity (too much or too little).
Bearing wear or damage.
Solutions:
Flush old grease and replace with fresh, high-quality lubricant.
Maintain grease at recommended levels (typically 50-70% of bearing cavity).
Replace severely worn bearings.
4. Material Flipping During Washing
Causes:
Spiral disk speed too high.
Horizontal axis of the spiral disk not properly secured.
Solutions:
Reduce the spiral’s rotational speed.
Re-fix the horizontal axis if flipping persists after speed adjustment.
5. Frame Vibration
Causes:
Loose connecting frame bolts.
Loose bearing seat bolts.
Solutions:
Tighten all connecting frame bolts.
Inspect and secure bearing seat bolts.
6. Transmission Component Noise
Causes:
Insufficient gear lubrication.
Gear misalignment or spacing issues.
Solutions:
Replenish gear lubricant to manufacturer specifications.
Adjust the reducer’s anchor bolts and realign gears.
7. Discharge Port Blockage
Causes:
Sudden overfeeding of material.
Excessively fine sand/gravel particles causing siltation.
Solutions:
Immediate Action: Stop feeding, open all discharge ports, and flush with clean water.
Preventive Measures: Control feed rate and install a screen to filter oversized/fine particles.
8. Reduced Output or Sand Leakage
Causes:
Damaged or torn sand net.
Loose sand net fixing bolts.
Solutions:
Inspect the sand net for damage; repair or replace it.
Tighten all bolts securing the sand net.
Key Takeaways for Operators
Regular Maintenance: Check belts, bearings, reducers, and bolts weekly.
Lubrication Management: Use clean grease and adhere to recommended quantities.
Operational Discipline: Avoid sudden feed surges; monitor material size and machine load.
Immediate Troubleshooting: Address noise/vibration promptly to prevent cascading failures.