How To Adjust The Chain Tension Of A Rotary Bar Screen?

(MENAFN- GetNews) When installing a rotary bar screen, pay close attention to these key points, as they directly affect the stability and lifespan of the equipment.

Adjusting the chain tension is crucial for the maintenance of a rotary bar screen. Let me outline the specific operations and judgment criteria for you; follow these steps and you'll be fine.

Steps for Adjusting Chain Tension

Preparation: First, disconnect the power and hang a safety warning sign. Prepare tools such as a hand crank and wrench.

Initial Inspection: Use the hand crank to crank the motor in the direction of the arrow on the safety cover to confirm there is no obstruction.

Loosen the Reducer: Remove the safety cover, loosen the tension sprocket, and then loosen the reducer's anchor bolts.

Adjusting Tension:

Manual Adjustment: Move the reducer up and down, pressing the middle of the drive chain with your finger to measure the slack. The ideal range is 10mm-22mm (approximately one to two finger widths). Adjust if it's too tight (<10mm) or too loose (>22mm).

Mechanical Adjustment: Fine-tune the chain tension using the tensioner sprocket adjuster or tensioner screw until the chain slack is appropriate.

Security and Verification: Tighten the reducer's foundation bolts to ensure the reducer is parallel to the drive sprocket. Install the safety cover, power on, and run under no-load for a test run, checking for any vibrations or abnormal noises.

Key Inspections After Adjustment

No-Load Test Run: The equipment should run smoothly without abnormal noise or vibration.

Load Operation Test: Add screenings and observe whether the rake can smoothly grab and lift the debris.

Safety Device Verification: Test the sensitivity of the emergency stop button and overload protection.

Daily Maintenance and Precautions

Regular Adjustment: It is recommended to check and adjust the chain tension after monthly operation.

Lubrication and Maintenance: Apply grease to the drive chain and underwater bearings every 15-30 days.

Prompt Cleaning: If you find cotton threads, plastic bags, or other entangled materials, remove them immediately with a hook to prevent blockage.

Summary: The key to adjusting chain tension is maintaining a slack of 10-22mm, combined with no-load and load test runs. Remember to perform monthly maintenance, add lubricant, and keep the equipment clean to extend its lifespan.

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