Maintenance and Upkeep of Asphalt Mixing Plants

**Asphalt mixing equipment** typically operates in open-air environments, with many components functioning at high temperatures ranging from 140°C to 160°C. Furthermore, each shift lasts as long as 12 to 14 hours; consequently, the daily maintenance and upkeep of this machinery are critical to ensuring its proper operation and extending its service life. So, how can one effectively carry out the daily maintenance and upkeep of asphalt mixing plant equipment?

1. Lubricate the equipment in accordance with the lubrication schedule.
2. Inspect the vibrating screen as per the maintenance manual.
3. Check the pneumatic piping for leaks.
4. Check the large-particle overflow pipe for blockages.
5. Check the control room for dust accumulation; excessive dust will adversely affect the electrical equipment.
6. After shutting down the equipment, thoroughly clean the discharge gate of the mixing drum.
7. Inspect and tighten all bolts and nuts.
8. Check the lubrication of the screw conveyor shaft seals and perform any necessary adjustments.
9. Inspect the lubrication of the mixing drive gears through the inspection port and add lubricant as needed.

As integrated electromechanical systems, asphalt mixing plants are complex pieces of machinery that operate in harsh environments. To minimize equipment malfunctions, the operating crew must adhere to the “Three Diligences”: diligent inspection, diligent maintenance, and diligent repair. This entails a “Three-Stage Inspection” process: checking the equipment before startup, during operation, and after shutdown. It is essential to diligently carry out both routine and periodic maintenance tasks — specifically the “Five-Point Operation” (cleaning, lubrication, adjustment, tightening, and corrosion prevention) — to ensure the equipment is properly managed, utilized, and maintained. By doing so, we guarantee high rates of equipment integrity and utilization; furthermore, all components requiring maintenance must be serviced strictly in accordance with the prescribed maintenance requirements.