The self-priming pump is a booster pump, which has the advantages of compact structure, convenient operation, stable operation, easy maintenance, high efficiency, long life, and strong self-priming ability. There is no need to install a bottom valve in the pipeline, and it is only necessary to ensure that there is a quantitative suction liquid stored in the pump body before work. Different liquids can use different material self-priming pumps.
Reasons and solutions for self-priming pumps not being able to suck up water
Since the suction pipe of the self-priming pump is not tightly sealed, the self-priming pump is always in the state of pumping air, so the self-priming pump cannot absorb incoming water.
It is to check the sealing of the inlet pipe of the self-priming pump and repair the air leakage points, such as welding places, pipe joints, and other places where air leakage is suspected.
The self-priming pump that has been used for a period of time will be the reason why the self-priming pump cannot absorb water due to corrosion or wear, and water leakage in the mechanical seal.
Replacing damaged parts with new ones can solve the problem.
Due to the large amount of debris in the conveyed liquid, the pipeline or the bottom valve, or even the pump body will be blocked, which will also be the reason why the self-priming pump cannot absorb the incoming water.
Find the specific blockage point and clean up the debris to solve the problem.
Due to the unreasonable installation of the imported pipeline
For example, if there are too many elbows, try to control the number of elbows to 1-2. When there are 2 elbows, it is better to use 45-degree elbows. If the pipe diameter does not match the pump diameter, it will also cause the self-priming pump to fail to suck. water.
After the self-priming pump sucks up the water for the first time, it must be filled with water before it is used for the second time, which means that air has entered the pump body. The backflow air will be sucked into the pump body, because there is air entering, so it needs to be filled with water and exhausted to suck up the water when it is started next time.
The solution to this kind of self-priming pump not being able to absorb incoming water is to install a cut-off valve and a ball valve at the outlet to close the outlet valve and then stop it before stopping to solve the problem.
The water suction height of the self-priming pump in actual installation and use exceeds the allowable suction height of the self-priming pump.
It is recommended to replace the self-priming pump product with a higher self-priming height, or it is more appropriate to use a submersible pump product.