A water pump is a machine that transports liquids or pressurizes liquids. It transfers 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 liquids including water, oil, acid and alkali liquids, emulsions, suspoemulsions and liquid metals. So do you know the reason and solution for the pump not sucking water? Follow the editor of CMД-18 Water pump for a simple understanding!
The reason is that there is air in the pump body or the gas in the water inlet pipe, or the bottom valve is not closed tightly, and the water is not fully filled, the vacuum pump packing is seriously leaking, and the gate valve or the flap door is not closed tightly.

Remedy: First press the water up, 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 air leakage in the pipelines and joints. If air leakage is found, apply lubricating oil or mixed paint to the joints 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. Water or air leaks in the pipeline. The nut may not be tightened tightly during installation. If the leakage is not serious, apply cement or cement slurry mixed with asphalt oil on the leaking or water leaking place. Temporary repairs can be coated with wet mud or soft soap. If there is water leakage at the joint, you can use a wrench to tighten the nut. If the water leakage is serious, you need to re-disassemble and replace the cracked pipe; reduce the head and press the nozzle of the pump into the water 0.5m.
In summary, the editor of CMД-18 Water pump introduces the reasons and solutions for the failure of the pump to absorb water.