Screening Equipment Maintenance for Grain Silo

The stable operation of screening equipment is crucial. Proper maintenance not only extends the equipment's service life but also ensures screening effectiveness and enhances grain quality. This article will explore key points for screening equipment maintenance for grain silo.

Standardized Daily Inspection Procedures

Pre-Startup Equipment Check

Establishing a standardized inspection system is vital for screening equipment maintenance for grain silo. Before each shift, check the screen tension. Use a dedicated tensioning tool to ensure the screen pre-tension reaches 20 - 30N/cm². This prevents loose screens from causing thread jumping or clogging. Use an infrared thermometer to check bearing temperatures. During normal operation, the temperature rise should not exceed 40℃. If it exceeds 70℃, immediately stop the machine to check for lubrication issues.

Screening Efficiency Monitoring

Equip with a portable screening efficiency detector. Conduct random inspections 2 - 3 times a week. Compare with standard screening curves. If efficiency drops by more than 10%, clean the screen holes or replace the screen. This step ensures grain screening quality and efficiency, avoiding grain loss due to equipment issues.

Seasonal Maintenance Differences

Summer Maintenance Focus

Screening equipment maintenance for grain silo must also consider seasonal differences. In the hot and humid summer months, check the motor cooling fan monthly. Clean the dust from the heat sink to ensure unobstructed airflow. Also, apply food-grade rust-proof oil to the screen frame welds to prevent rusting.

Winter Maintenance Focus

In winter, focus on anti-freezing measures. In cold regions (temperatures below -10℃), use low-temperature lubricants. Preheat the equipment for 10 - 15 minutes before starting to avoid screen box cracking or vibrator failure due to large temperature differences. Before the rainy season, thoroughly inspect the top seals of the equipment. Replace any aged or damaged parts to prevent rainwater from entering the motor and electrical control cabinet, which could cause short-circuit faults.