Analysis of Common Mechanical Transmission Failures in Veneer Drying Machines

Veneer dryers are specifically designed for drying wood, veneers, wood skins and wood chips, with advantages of large drying capacity, remarkable energy-saving effect and low maintenance. When materials enter the dryer, they are jointly acted on by blowpipes and rotating drums. Materials flow in a boiling state inside the drum, and hot air fully contacts materials to complete drying. During operation, faults may occur, so it is necessary to identify and solve causes to ensure normal operation.

1. Drying screen inoperation & drive chain disengagement: Causes include untensioned drive chain, deformed drive sprocket. Solutions: Move chain tensioners and correct drive wheels.

2. Worm gear box overheating: Caused by insufficient lubricating oil. Countermeasure: Increase mechanical lubrication to the specified level.

3. Motor overheating or abnormal noise: Causes include phase failure in motor operation, excessive load. Countermeasures: Restore three-phase power supply and eliminate the cause of excessive load.

4. Insufficient hot air flow: Caused by air leakage at the joint of air duct and cabinet. Disposal: Line air leakage points with asbestos rope.

5. Low hot air temperature: Due to insufficient soot discharge from the chimney. Solution: Remove chimney soot.

6. Drying screen breakage: Causes include over-tight chain, foreign matter blockage. Countermeasures: Replace/repair the screen and remove foreign matter.

All dryer models should be equipped with the manufacturer's operation manual. Staff must master equipment parameters and material requirements, strictly control feed particle size and purity to prevent material damage. When processing, calculate incoming material moisture and dryer efficiency to avoid unstable output from excessive wet material intake. Control discharge volume to prevent overfeeding and equipment over-consumption.

After each processing cycle, arrange personnel to clean the equipment and lubricate transmission parts, check for abnormalities promptly to ensure normal operation, enhance durability and extend the dryer's service life.