Adjusting the gap on liners of jaw crushers is a crucial task to maintain the desired particle size and ensure efficient operation. Here are the general steps to set the gap on liners of jaw crushers:
Safety First
- Turn Off and Lock Out: Ensure the crusher is completely shut down and electricity is locked out to prevent accidental startup during maintenance.
- Wear Appropriate PPE: Use personal protective equipment such as gloves, safety glasses, and hard hats.
Tools Required
- Wrenches or spanners
- Feeler gauges or similar measuring tool
- Verification tools (e.g., a measuring tape)
Steps to Set the Gap
- Release Tension: Loosen the tension on the toggle plate to reduce the pressure and allow movement.
- Open the Jaw Crusher: Open the jaw crusher to expose the liners.
- Measure the Current Gap: Use feeler gauges to measure the existing gap between the liners. This helps in understanding the adjustment required.
- Adjust the Liners: Most jaw crushers have adjustable wedges or hydraulic systems to alter the gap:
- Manual Adjustment: Locate the adjustment wedge bolts or hydraulic cylinders.
- Adjust the Wedges or Cylinders: Turn the adjustment bolts or operate the hydraulic cylinders to increase or decrease the gap. Follow the manufacturer’s instructions for your specific model.
- Check the New Gap: Re-measure the gap with feeler gauges to ensure it matches the desired setting.
- Re-tighten Everything: Ensure all bolts and components are securely tightened back into place to maintain the gap and secure the liners.
- Test the Crusher: Once everything is reassembled, conduct a test run. Feed material into the jaw crusher and check the output for the required particle size.
- Fine-Tuning: If necessary, make minor tweaks to fine-tune the gap for optimal operation.
Post-Adjustment
- Inspection: Regularly inspect the gap and wear of the liners. Adjust as needed based on material type and crusher usage.
- Maintenance: Perform consistent maintenance checks to ensure long-term efficient operation of the jaw crusher.
Documentation
- Records: Keep a log of all adjustments, including dates, gap measurements, and observations to track the performance over time.
Always refer to the specific jaw crusher's operation and maintenance manual provided by the manufacturer for precise instructions and safety guidelines.
