How to prolong the service life of sewage pump
To extend the service life of the sewage pump, you can start from the following aspects:
1. Standardize daily operations
Pre-start inspection:
Manually turn the wheel to check flexibility and confirm that there is no sticking.
Check the speed and direction of the motor, and confirm whether there is any abnormal sound.
Ensure that the pump body and its connection parts are tight and not loose, and the operation is flexible and free.
Start and run:
Perform a motor jog test to verify whether the motor direction is correct.
After starting the motor, wait for the sewage pump to run stably, then gradually open the gate valve, and observe the pressure display and motor load condition.
Ensure that the flow and head of the sewage pump meet the specified range on the equipment nameplate.
Shutdown operation:
After closing the gate valve and pressure gauge, stop the motor safely.
After stopping, wait patiently until the motor stops running completely.
2. Regular maintenance and maintenance
Lubrication and cleaning:
Replace the engine oil every certain period of use (such as 400 hours), and use qualified engine oil.
Regularly check and replace or replenish the lubricating oil to ensure that the oil level is at the center line of the oil mark.
After transporting slurry liquids with high viscosity, pay attention to cleaning the accumulated liquid in the pump to ensure the overall cleanliness of the pump.
Insulation and moisture-proof:
Regularly check the insulation resistance between the electric pump winding and the casing to ensure that it is at a normal value.
When the pump is stopped for a long time, avoid storing it directly under the liquid to reduce the chance of the stator winding getting damp.
If the sewage pump needs to be stopped for a long time, it should be fully disassembled, the internal moisture should be removed, and anti-rust grease should be applied to the rotating parts and connections before proper storage.
Sealing and tightening:
Regularly check and adjust the packing gland to ensure that the packing chamber maintains a suitable dripping state.
Regularly check the wear of the shaft sleeve. Once the wear is serious, replace the new shaft sleeve in time.
Regularly check the sealing ring between the impeller and the pump body to avoid damage that affects the performance of the pump.
3. Troubleshooting and handling
Common faults:
Unstable power supply voltage or poor contact of the motor line.
The water pipeline is blocked or leaking.
There are foreign objects or damage in the sewage pump.
The shaft seal is worn or damaged.
Treatment method:
Perform voltage stabilization or check whether the motor line contact is good.
Check whether the water pipe is blocked by debris or leaking, and clean or repair it.
Disassemble the sewage pump and clean or replace damaged parts.
Replace the shaft seal or tighten the bolts and other connecting parts.
4. Precautions
Avoid frequent opening and closing: Frequent opening and closing will disrupt the rhythm of the pump and increase unnecessary impact and wear.
Ensure safe operation: When maintaining or operating the sewage pump, be sure to cut off the power supply first to prevent the risk of electric shock.
Winter antifreeze measures: When using the sewage pump in the cold winter, open the drain plug at the bottom of the pump body after parking, and completely drain the medium to prevent the pump body from freezing and cracking.
In summary, the service life of the sewage pump can be effectively extended by standardizing daily operations, regular maintenance, troubleshooting and handling, and compliance with precautions.
