The maintenance and upkeep of the liquid ring vacuum unit should be combined with daily inspections and regular maintenance. The specific methods are as follows:
1、 Key points of daily maintenance
1. Running status monitoring
Check if the readings of instruments such as vacuum degree, pressure, and temperature are normal. Abnormal fluctuations may indicate leaks or component wear.
Monitor the sound of the unit's operation and immediately shut down for any abnormal noise (such as friction noise).
2. Cooling system maintenance
Ensure stable cooling water flow and water temperature not exceeding 40 ℃ to avoid scaling or blockage.
Drain the accumulated water in the pump and pipeline during winter shutdown to prevent freezing and cracking.
3. Lubrication and sealing inspection
Regularly check whether the mechanical seal leaks water or air, and adjust or replace the sealing components in a timely manner if the packing box heats up.
The bearing temperature should be 15 ℃~20 ℃ higher than the environment, with a maximum not exceeding 55 ℃~60 ℃.
2、 Regular maintenance measures
1. Cleaning and anti-corrosion
Clean the dust on the air inlet filter and pump body surface. The chemical industry requires the use of specialized cleaning agents to remove corrosion residues.
Keep the equipment dry and ventilated to avoid accelerating component corrosion in humid environments.
2. Key component replacement
Replace lubricating oil 3-4 times a year, clean bearings, and replace deteriorated oil.
Check the clearance between the impeller and the distribution plate (usually 0.15~0.20mm), and replace it if the wear exceeds the limit.
3. System integrity check
Tighten all bolts and anchor bolts to prevent loosening and vibration.
Check the leakage points in the pipeline, repair them, and re vacuum test the sealing performance.
3、 Special working condition handling
1. Low temperature environment: Preheat the unit to above 5 ℃ before starting to avoid poor lubrication caused by viscous lubricating oil.
2. Sudden malfunction: If the unit is suddenly exposed to the atmosphere, immediately shut down and close the intake valve to prevent lubricating oil splashing.
The above measures can effectively extend the service life of the unit, and should be implemented in conjunction with the specific parameters in the manufacturer's manual.