A water pump is a mechanical device that transports or pressurizes liquids. It transmits the mechanical energy or other external energy of the prime mover to the liquid to increase the energy of the liquid. It is mainly used to transport liquid, including water, oil, acid-base liquid, emulsion, suspended lotion and liquid metal.
The reason is that there is air in the pump body or air accumulation in the inlet pipe, or the bottom valve is not tightly closed, the water supply is insufficient, the vacuum pump packing is severely leaking, and the gate valve or flap valve is not tightly closed.
Solution: First increase the water pressure, then fill the pump body with water, and then turn it on.
At the same time, check whether the check valve is tight and whether there is any air leakage in the pipeline and joints. If any air leakage is found, apply lubricating oil or mixed paint to the joint after disassembly, and tighten the screws. Check the oil seal ring of the water pump shaft and replace it with a new one if it is severely worn. Pipeline leaks water or air.
The nut may not be tightened tightly during installation. If the leakage is not severe, cement can be applied to the leaking area or cement slurry mixed with asphalt oil. Temporary repairs can be done with damp mud or soft soap. If there is water leakage at the joint, a wrench can be used to tighten the nut. If the leakage is severe, it must be reassembled and replaced with a cracked pipe; Reduce the head and press the nozzle of the water pump 0.5m underwater.