How to Prevent Common Sand Mill Failures?

1. Regular Maintenance and Inspection
1. Lubrication System Management
Check bearing temperature rise every shift (≤35°C) and replace lubricating oil regularly (recommended every 500 hours).
Check the mechanical seal fluid level daily to ensure it remains above the lower limit mark to prevent leakage and bearing damage.
2. Grinding Media Control
The media fill volume should be controlled at a 40% void ratio to avoid starting difficulties due to excessive volume or impacting grinding efficiency due to insufficient volume.
Regularly screen the crushing media (for example, the diameter of glass beads should be ≥ twice the width of the separation screen slot).
2. Operating Parameter Optimization
1. Temperature and Pressure Monitoring
Maintain a cooling water pressure of 0.2-0.3 MPa to prevent overheating due to water outages or blockages.
Adjust the feed pump speed according to the material viscosity. For high-viscosity materials, reduce the pump speed to prevent "bursting."
2. Load and Speed ​​Balancing
Avoid excessive spindle speed (800-1000 rpm is recommended for domestic equipment) to reduce wear and energy consumption. If the material solids content or viscosity is abnormal, process parameters must be adjusted promptly.
III. Maintenance of Key Components
1. Sealing and Filtration System
Regularly replace seals (such as the dynamic and static rings of mechanical seals) to prevent leakage and contamination.
Clean the feed filter (such as a 50μm Y-type filter) to prevent clogging that could affect feed efficiency.
2. Disperser and Screen
Replace the disperser when wear exceeds 1/4 of its thickness, and clean the screen immediately if clogged.
Avoid prolonged idling with low-viscosity materials to reduce cylinder wear.
IV. Operating Instructions and Training
Before starting, check the power supply, V-belt tension, and cooling system. Never operate the machine with faults.
Operators must be familiar with the emergency shutdown procedure. If abnormal vibration or response is detected, immediately shut down the power supply for inspection.