Common faults of rotary vibrating screen and their solutions.

This guide provides a comprehensive overview of common motor issues, their potential causes, and recommended solutions. The information is organized into a table format for easy reference.

1. Power Socket (Motor Fails to Start)

• Possible Causes:
  1. Stator winding short circuit, open circuit, or grounding.
  2. Incorrect stator winding connection.
  3. Overload or rotor blockage.
• Solutions:
  1. Inspect and repair the short circuit, open circuit, or grounding.
  2. Check and correct the wiring connections.
  3. Reduce the load or remove the obstruction.

2. Motor Overheating or Noise

• Possible Causes:
  1. Overload.
  2. Winding short circuit.
  3. Incorrect winding connection.
  4. Wiring or circuit issues.
  5. Rotor bar breakage.
  6. Stator issues during operation.
  7. Low power supply voltage.
• Solutions:
  1. Reduce the load or replace damaged parts.
  2. Locate and repair the short circuit.
  3. Check and correct the winding connections.
  4. Avoid faults and repair the circuit.
  5. Replace the rotor.
  6. Measure internal motor and bearing clearances for repairs.
  7. Ensure adequate power supply voltage.

3. Bearing Overheating

• Possible Causes:
  1. Bearing wear or oil leakage.
  2. Improper lubrication or poor-quality bearings.
  3. Loose or tight fit between the bearing inner ring and the shaft.
  4. Loose or tight fit between the bearing outer ring and the housing.
  5. Improper installation or wear of the housing bearing.
• Solutions:
  1. Replace the bearing.
  2. Adjust the lubrication.
  3. For a loose fit, add a shim; for a tight fit, re-machine the shaft.
  4. For a loose fit, expand the housing; for a tight fit, re-machine the bearing housing.
  5. Reinstall the bearing to ensure even distribution.

4. Motor Case Electrification

• Possible Causes:
  1. Winding insulation damage.
  2. Winding moisture.
  3. Damaged leads or excessive dirt.
• Solutions:
  1. Repair the insulation and clean/dry the motor.
  2. Dry or clean and dry the motor.
  3. Replace the leads and clean the dirt.

5. Screw Breakage

• Possible Causes:
  1. Resonance due to improper bolt installation.
  2. Uneven installation surface.
• Solutions:
  1. Install the bolts correctly.
  2. Re-machine the installation surface.

6. Motor Operation Issues

• Possible Causes:
  1. Power supply issues.
  2. Insufficient cable length causing poor contact.
  3. Burnt cable.
  4. Single-phase operation with loose coils.
  5. Excessive lubrication.
  6. Insufficient lubrication.
• Solutions:
  1. Turn on the switch.
  2. Replace the cable.
  3. Replace the burnt cable.
  4. Replace the motor.
  5. Maintain continuous operation.
  6. Add appropriate lubrication.

7. Abnormal Noises

• Possible Causes:
  1. Damaged epoxy bolts.
  2. Incomplete epoxy embedding.
  3. Misaligned ball plate.
  4. Cracked ball plate.
  5. Unstable motor base.
  6. Broken spring.
  7. Contact between motor and other hardware.
  8. Loose motor and pulley contact.
  9. Contact between discharge port and objective lens.
  10. Unremoved motion gaps or bolts.
• Solutions:
  1. Replace the damaged bolts.
  2. Use pliers to assist embedding.
  3. Align the ball plate correctly.
  4. Replace the ball plate.
  5. Stabilize the motor base.
  6. Replace the spring.
  7. Create a 10cm space.
  8. Ensure proper sealing.
  9. Prevent contact.
  10. Remove motion gaps or bolts.

8. Irregular Material Discharge

• Possible Causes:
  1. Incorrect motor rotation direction.
  2. Excessive angle between upper and lower surfaces.
  3. Incorrect surface alignment.
• Solutions:
  1. Correct the motor rotation direction.
  2. Adjust the angle.
  3. Correct the surface alignment.

9. Slow Discharge

• Possible Causes:
  1. Direct extraction of two items.
  2. Loose belt.
  3. Damaged belt.
  4. Loose or rotten seal.
• Solutions:
  1. Adjust the extraction method.
  2. Tighten the belt.
  3. Replace the belt.
  4. Tighten or replace the seal.

10. Discharge Port Misalignment

• Possible Causes:
  1. Excessive bending moment from heavy loads.
  2. Damaged epoxy.
• Solutions:
  1. Isolate the discharge port.
  2. Tighten the ring.