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Is A Self-priming Pump Better Or A Submersible Pump?

Views: 30     Author: Site Editor     Publish Time: 2020-10-23      Origin: Site

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Which one is better ? Submersible pump or Self-priming pump?

The advantages of the submersible pump

the submersible pump has a small equipment area, the impeller is located underwater, and the suction function is good, so a higher speed can be selected, and it is not necessary to fill with water to start, which is convenient for automation. The choice of small volume and light weight submersible pump can also be easy to move and use, and it is convenient to carry.

Disadvantages of submersible pumps

the main part is located below the water surface, maintenance is inconvenient, the lifting height of the crane is high, the height of the pump room is high, the mechanical load is concentrated, the load per unit area is large, and the maintenance of water-lubricated bearings is troublesome. Submersible pump cables that are often moved are easy to be damaged, and special protection of cables is required during mobile use.


Is a self-priming pump better or a submersible pump?

Both self-priming pumps and submersible pumps have their own advantages, and you need to choose a pump according to local conditions. If you are pumping water on land, you can generally choose a self-priming pump; if you are pumping water in a well, you can choose a submersible pump, because you don't have to worry about the suction stroke when you are in the well.

According to the principle of use, there are distinctions between self-priming pumps and submersible pumps. A submersible pump is a pump body that works in water, while a self-priming pump is a pump that is installed on the ground and sucks the water in the lower part into the pump body, and then is thrown out of the pump body by the impeller and transported to a higher and farther place. body.

Advantages of self-priming pumps: The main part is located above the water surface, which is convenient for maintenance. The load is distributed evenly, and the mechanical load per unit area is small. The lifting height is small, the height of the pump room is low, and the power machine does not need to be moved when disassembling. There are few water-lubricated bearings, but they are not needed. The total cost of self-priming pump, transmission equipment and power machine is relatively cheap. Defects of the self-priming pump: Since the water at a low position needs to be pumped into the pump cavity, and then pressurized and transported to a farther place, the higher the suction lift of the self-priming pump, the higher the lift loss.


The advantages of the submersible pump: the submersible pump has a small equipment area, the impeller is located underwater, and the suction function is good, so a higher speed can be selected, and it is not necessary to fill with water to start, which is convenient for automation. The choice of small volume and light weight submersible pump can also be easy to move and use, and it is convenient to carry. Defects of submersible pumps: the main part is below the water surface, maintenance is inconvenient, the lifting height of the crane is high, the height of the pump room is high, the mechanical load is concentrated, the load per unit area is large, and the maintenance of the water-lubricated bearing is troublesome. Submersible pump cables that are often moved are easy to be damaged, and special protection of cables is required during mobile use.


Self-priming pumps and submersible pumps are often interchangeable, and you can choose according to your usage and advantages and disadvantages. After years of research and development, Zhejiang Donglei Pump Co., Ltd. provides you with high-quality submersible pumps for wells, which are used for water tower filling, deep well water intake, river water intake, fountain drip irrigation, etc.


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