Solution to overheating of mechanical seal of sewage pump
For the problem of overheating of the mechanical seal of the sewage pump, the following solutions can be adopted:
1. Check and adjust the status of the mechanical seal
Check the seal:
Carefully observe whether the surface of the mechanical seal is damaged and whether the manufacturing material is properly selected.
If the seal is found to be damaged or the material is inappropriate, the corresponding seal should be replaced.
Check the status of the device:
Confirm whether the mechanical seal device is loose.
For loose conditions, necessary repairs or tightening should be carried out to ensure the stability and reliability of the device.
2. Improve lubrication and cooling conditions
Replace the bearing lubricant:
Choose a higher quality bearing lubricant to avoid mixing lubricants of different specifications and low quality.
Replace the lubricant regularly to ensure the normal operation of the mechanical seal.
Strengthen cooling measures:
If the mechanical seal has a cooling water system, make sure to turn on the cooling water before starting, and check whether the flow and pressure meet the requirements.
Reduce the temperature of the medium so that its temperature does not exceed 80℃ at normal pressure.
3. Optimize the operation and maintenance process
Strictly implement the operating procedures:
Start and operate the sewage pump according to the operating procedures to avoid overheating of the mechanical seal caused by improper operation.
Regular cleaning and inspection:
For pumps without flushing systems, after long-term use, the mechanical seal should be disassembled to check whether it is blocked and then used after cleaning.
For self-flushing mechanical seals, the flushing pipeline should be checked regularly for blockage and cleaned in time.
Strengthen maintenance:
Maintain the sewage pump and its mechanical seal regularly, including checking the wear of the sealing surface, cleaning the sealing surface, etc.
IV. Adjust the operating parameters of the pump
Adjust the inlet pressure of the pump:
Keep the inlet pressure of the pump within the appropriate range to avoid insufficient lubrication and overheating caused by too low inlet pressure.
Control the vibration of the pump:
The radial runout of the rotor cannot exceed the specified range to ensure the concentricity of the pump and the motor.
When the pump is running, the constant vibration value should not exceed the specified value.
Optimize the operating pressure:
Avoid the operating pressure close to the saturated steam pressure of the medium to reduce the risk of overheating of the sealing surface.
Through the implementation of these measures, the risk of overheating of the mechanical seal can be effectively reduced and the operating efficiency and stability of the sewage pump can be improved.
