The working of the submersible pump is a little bit different than a jet pump. Because jet pumps transfer the fluid by pulling it while submersible pumps transfer the fluid by pushing it.
A submersible water pump is a machine that is linked with a completely sealed motor. It is a type of centrifugal pump. Therefore, its working is very similar to other types of centrifugal pumps. Submersible pumps submerge entirely in the water.
During the working of the submersible water pump, it pushes the water toward the surface.
As the water of the well or reservoir enters into the pump by the foot valve, it strikes the impeller. An impeller is a rotatory unit that has multiple fixed blades. This impeller is connected to an electric motor through a shaft. The impeller rotates with the rotation of the shaft.
As the water strikes the blades of the impeller, the blades convert the water kinetic energy into speed and increase the speed of the water. After passing through the impeller, the water enters into the diffuser, which further transforms the speed of the water into pressure energy.
In this way, the diffuser increases desired pressure of the water; after that, pressurized water discharges through the outlet valve of the pump.
For a better understanding, watch the following video:
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