Will the wear of the water pump impeller affect the water supply pressure
There will be an impact, as impeller wear will directly lead to a decrease in water supply pressure.
The reason is that after the impeller wears out, the internal clearance of the pump increases, and high-pressure water will flow back to the low-pressure side, which is equivalent to "spinning" inside the pump. The actual flow rate and head sent out also decrease, and the outlet pressure naturally cannot increase. The more severe the wear, the more obvious the impact.
Main impacts
Pressure reduction: Impeller wear will reduce the hydraulic efficiency of the pump, resulting in a decrease in head and outlet pressure.
Flow reduction: There is severe internal backflow, resulting in a decrease in actual output flow.
Efficiency deterioration: The efficiency of the pump decreases, and energy consumption may actually increase.
Need to distinguish between light and heavy
Slight wear and tear: It can still operate in emergency mode for a short period of time, but there may be vibration and abnormal noise, and it cannot work with illness for a long time.
Severe wear and tear (cracks, chipping, deformation): The machine must be stopped as continuing to operate may damage the pump casing and burn out the motor, posing a safety risk.
Handling suggestions
Timely replacement of worn impellers can effectively restore pressure.
During inspection, also pay attention to whether the mouth ring seal and impeller keyway are worn, which can exacerbate the pressure drop.
When replacing the impeller, choose the appropriate model and pay attention to draining the air inside the pump after installation.