Problems that occur during the use of diesel water pumps
There may be many problems with diesel water pumps during use, which may be caused by the equipment itself, improper operation or environmental factors. The following are some common diesel water pump usage problems and their possible causes:
1. Startup problems
Unable to start:
Power supply problems: such as loose joint connection, poor switch contact, blown fuse or three-phase power supply.
Diesel engine failure: such as insufficient fuel, insufficient or contaminated lubricating oil, insufficient battery power, etc.
Mechanical failure: such as packing too tight, debris stuck between the impeller and the pump body, pump shaft bending, etc.
2. Operation problems
Insufficient or interrupted flow:
Filter blockage: resulting in reduced water intake.
Front valve failure: The bottom valve is not sealed or blocked, affecting the water absorption performance.
Suction height is too high: exceeds the allowable suction height of the water pump.
Insufficient speed: The diesel engine speed does not reach the rated value, affecting the output of the water pump.
Insufficient head:
Impeller installed in reverse: The double-suction impeller is installed in the wrong direction.
Viscosity does not match the design: The viscosity of the conveyed liquid exceeds the design range.
Excessive flow: The flow during operation exceeds the design flow of the water pump.
Vibration or abnormal sound:
Bearing damage: Bearing wear or damage causes vibration.
Loose bearing: The clearance between the bearing and the shaft is too large.
Seal wear: Seal wear causes air or water leakage.
Poor alignment: The coupling or bearing seat is poorly aligned.
Leakage problem:
Seal failure: Mechanical seal or packing seal failure.
Pipeline problem: The pipe joint is loose or the seal is not tight.
3. Other problems
Diesel engine overheating:
Poor heat dissipation: Insufficient cooling water or blockage of the cooling system.
Excessive load: Long-term high-load operation causes diesel engine overheating.
Oil quality problem:
Lubricant contamination: Impurities or water are mixed in the lubricant.
Poor oil quality: Use lubricants that do not meet the requirements.
Solution
For the above problems, the following measures can be taken to solve them:
Check the power supply and diesel engine: Ensure that the power supply is normal and the parameters of the diesel engine meet the requirements.
Clean the filter and bottom valve: Clean the filter and bottom valve regularly to prevent blockage.
Adjust the suction height and speed: ensure that the suction height is within the allowable range and adjust the diesel engine speed to the rated value.
Replace or repair damaged parts: replace or repair damaged bearings, seals and other parts.
Strengthen maintenance and care: regularly maintain and care for diesel water pumps to ensure that the equipment is in good condition.
There are many problems that may occur during the use of diesel water pumps, which need to be analyzed and solved according to the specific situation. In order to effectively reduce the failure rate of diesel water pumps and improve their operating efficiency and service life.
