Proper maintenance of mining underground ventilation fans is essential for ensuring stable airflow and safe working conditions in underground mines. Regular inspections and servicing help prevent unexpected failures, improve efficiency, and extend the lifespan of the equipment.

What Are the Key Areas for Mining Underground Ventilation Fan Maintenance?

1. Exterior Inspection

Check the mining underground ventilation fan casing for cracks, deformation, or severe rust.

Inspect the blades for cracks, deformation, or excessive wear.

Ensure bearings are free from leaks and excessive wear.

Examine the transmission system for looseness or damage.

Verify the sealing components to prevent air leakage.

Monitor lubrication systems for leaks, high oil temperature, or oil degradation.

Check electrical wiring for aging or insulation damage.

Inspect the control system for faulty components.

Ensure the surrounding environment has suitable temperature and humidity levels.

Monitor mining underground ventilation fan operation, including speed, vibration, and noise levels.

2. Bearing System Inspection

Check for wear, cracks, or damage in the bearings.

Ensure proper lubrication and replace degraded grease.

Verify the tightness and alignment of bearings.

Clean and replace worn-out bearings if necessary.

Check for oil leaks and replace damaged seals.

Adjust axial clearance to prevent excessive movement.

Ensure bearing housing is securely installed.

Apply preloading to maintain even pressure distribution.

Inspect grounding connections for safety.

3. Transmission System Maintenance

Inspect gears for wear or breakage.

Check shafts for bending or deformation.

Ensure transmission bearings are intact.

Inspect sealing components for leaks.

Clean and replace damaged parts and lubricants.

Verify the secure installation of all transmission components.

Ensure proper lubrication for smooth operation.

Test safety protection devices.

4. Sealing System Check

Examine seals for aging or damage.

Ensure seals are correctly installed and secure.

Replace or repair worn seals to maintain airtightness.

Verify proper lubrication of sealing components.

Conduct pressure tests to confirm sealing effectiveness.

5. Lubrication System Inspection

Check for oil leaks or blockages in the system.

Ensure the lubrication pump operates properly with stable pressure.

Clean or replace filters to maintain oil circulation.

Regular maintenance of mining underground ventilation fans helps improve operational efficiency, reduce downtime, and enhance safety in underground mining operations. By following a structured maintenance schedule, mine operators can ensure reliable airflow and prolonged equipment life.