The following is a systematic maintenance guide for single-drum dryers, covering daily maintenance, scheduled maintenance, and special situation handling to help you maximize equipment life and maintain efficient operation:
Daily Maintenance (Per Shift/Daily)
1. Pre-Operation Inspection
• Confirm the oil level at all lubrication points (bearings, gearbox)
• Check the tightness of the drive belt/chain (ideally, a thumb press should depress 6-8mm).
• Remove any residual material from the drum (especially clay/biomass, which tends to clump).
2. In-Operation Monitoring
• Bearing temperature ≤ 75°C (using an infrared thermometer).
• Motor current fluctuation ≤ ±10% of rated value.
• Check for abnormal noise/vibration (drum runout ≤ 3mm/m).
3. Post-Shutdown Processing
• Completely drain the drum (to prevent moisture corrosion).
• Clean the dust collector bags/cyclone separator (dust accumulation ≤ 5mm).
• Check the lift plate for wear (wear > 30% requires replacement).
Regular Maintenance Plan
1. Weekly Maintenance
Lubrication System
• Add high-temperature grease (such as Shell Gadus S2 V220) to the chain/gears.
• Add 3# lithium-based grease to the tugboat bearings (50-80g each time).
Seal Inspection
• Adjust the gap between the cylinder end seal strips (maintain a 1-2mm compression).
• Retighten the hot air duct flange bolts (torque 85-100Nm).
2. Monthly Maintenance
Key Component Inspection
• Wear plate thickness measurement (replace if remaining <50%).
• Thermocouple calibration (replace immediately if error >±5°C).
System Optimization
• Clean the burner nozzle (use a 0.5mm steel wire through the hole).
• Change the reducer oil (first 500 hours, then every 2000 hours).
3. Annual Overhaul
Mechanical System
• Laser inspection of the cylinder straightness (deviation >5mm requires correction).
• Adjust gear pair meshing clearance (0.15-0.2mm)
Thermal System
• Repair the hot air furnace refractory layer (cracks > 2mm require professional repair)
• Clean carbon deposits from heat exchange tubes (compressed air + metal brush)
Key Component Maintenance Points
1. Bearing Maintenance
• Clean and grease the bearing seat every three months (SKF LGMT 3 grease)
• Replace seals annually (to prevent dust ingress)
2. Drive System
• Gearbox oil quality test monthly (replace if water content > 0.5%)
Chain drive inspection quarterly (adjust if elongation > 3%)
3. Hot Air System
• Clean the heat exchange tubes monthly (increase thermal efficiency by 10-15%)
• Professionally calibrate the gas burner every six months (CO emissions ≤ 100ppm)
Special Situation Handling
1. Rainy Season Maintenance
• Install a moisture-proof heater on the motor (activate when ambient RH > 80%)
• Use waterproof grease (such as Mobilith SHC 100) for lubrication points.
2. Long-term downtime
• Apply rust-inhibiting oil (BP Enersyn HTX 32) to the inner wall of the drum.
• Perform dry maintenance of the hot air furnace (place desiccant and nitrogen blanket).
3. Material changes
• Thoroughly clean the drum when switching to biomass fuel (to prevent fiber entanglement).
• Inspect liner bolts after handling ore sand (vibration can easily cause loosening).
Notes:
1. Increase the frequency of wear part inspections for mining dryers (recommended reduction of the inspection interval by 30%).
2. Clean the spark arrestor during each downtime for biomass-fired models.
3. For building materials dryers, focus on monitoring the dust removal system (due to the risk of dust explosions).
Through systematic maintenance, single-drum dryers can maintain >90% operating efficiency and extend their service life to 8-10 years. A comprehensive inspection by a professional engineer is recommended quarterly (see the appendix for a table of inspection items).
Baichy Heavy Industry – Your Trusted Partner for Seamless Equipment Operation
To ensure optimal performance of your equipment, Baichy Heavy Industry offers:
- Professional on-site installation guidance
- Comprehensive operator training
- 24/7 technical support & maintenance services
Our complete after-sales service system guarantees long-term, stable operation of your machinery with minimal downtime.
Protect Your Rights – Only Use Official Channels
To avoid scams and ensure authentic support, contact us exclusively through:
• Official Website: www.baichychina.com
• WhatsApp: +8615093222637
• Email: [email protected]
Your satisfaction is our priority – expect prompt, professional service every time.
(Note: Beware of unauthorized third parties claiming to represent Baichy. Always verify through official contacts.)
