LIAONING QIUSHI Releases In - Depth Scraper Conveyor Maintenance Guide
For the grain storage and transportation industry, the uninterrupted operation of scraper conveyors is essential to production efficiency. LIAONING QIUSHI STEEL SILO CO., LTD, a renowned provider of industrial storage solutions, has recently published a comprehensive maintenance guide. This guide is designed to assist customers in quickly diagnosing and resolving common issues, thereby ensuring the sustained reliability of their scraper conveyors.
Identifying and Solving Common Faults
1. Motor Startup Issues
Possible Causes: Problems may stem from power supply disruptions, tripped overload protection devices, or faulty control switches.
Repair Procedures:
Conduct a thorough inspection of the electrical control cabinet to identify and replace blown fuses.
Check for grain accumulation that could be causing motor overload. After ensuring the drive system moves freely, reset the overload protector.
Test the control switch and contactor, and replace any defective components, preferably with professional electrical assistance.
2. Chain - related Malfunctions
Possible Causes: Excessive chain slack, severely worn sprockets, or blockages caused by grain buildup.
Repair Procedures:
Adjust the chain tension so that the chain sag does not exceed 20mm by turning the tensioning screw clockwise.
Inspect sprockets for wear. If tooth deformation or wear exceeds 3mm, replace sprockets and chains as a matched set.
Immediately stop the conveyor to clear grain accumulation around the scraper and sprockets, avoiding forced operation that could worsen the damage.
3. Abnormal Noise and Vibration
Possible Causes: Lack of lubrication in bearings, loose scraper bolts, or friction between the chain and the housing.
Repair Procedures:
Check the condition of bearing grease and replenish lithium - based grease every 500 operating hours. Replace bearings if abnormal noise persists.
Tighten scraper - to - chain connection bolts using a torque wrench (standard torque: 80 - 100N·m).
Adjust the chain trajectory and inspect the housing for deformation or foreign objects to ensure the chain runs centrally.
4. Grain Leakage
Possible Causes: Aging seal strips on the housing, excessive gaps between the scraper and the housing, or loose flange connection bolts.
Repair Procedures:
Replace worn - out seal strips with food - grade rubber materials, ensuring at least 50mm of overlap at the joints.
Adjust the gap between the scraper and the housing to within 5mm and replace severely worn scrapers.
Tighten flange bolts in a diagonal sequence and install lock washers to prevent future loosening.
Comprehensive After - sales Support from LIAONING QIUSHI
Genuine Spare Parts: The company supplies factory certified components, including high strength scraper chains (tensile strength ≥80kN), wear resistant sprockets (surface hardness HRC45 - 50), and food - grade seal strips (aging resistance ≥5000 hours). Customers can access the spare parts list by visiting www.qssilo.com/parts and entering their equipment model.
Efficient Service Network: With service centers established in 35 countries globally, LIAONING QIUSHI guarantees a 24 hour response time and aims to dispatch technicians to the site within 48 hours (excluding remote areas) for on site repairs.
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