What is a Submersible Pump? | How does a Submersible Water Pump Work?


A pump is a device that uses to transfer fluids from one location to other. There are multiple types of pumps that use in various industries all over the world. A submersible pump is a famous type of pump. It is a type of multistage centrifugal pump. A submersible pump is also known as a well pump.

What is Submersible Pump?
A submersible pump is a mechanical equipment that works by pushing the water toward the surface instead of pulling it. It has a hermetically sealed motor connected to the pump body that helps to push the fluid toward the surface. It is a most famous type of the centrifugal pump. A submersible pump mainly uses to pump the water from the wells. This type of pump pushes water toward the surface by changing the rotatory motion (speed) into kinetic energy, and diffuser blades further convert this K.E into pressure energy.

The significant benefit of this pump is that it can prevent the pump from cavitation – these pumps are known as submersible pumps because these submerge entirely in the water. Therefore, the principal purpose of these pumps is to pump water out of the tanks, wells, or other vessels by submerging into the water or other fluids. These pumps also use in hot water-heavy oil applications where pressurized liquid from the ground is used to power a hydraulic motor in wells instead of an electric motor.

In 1928, Armais Arutunoff discovered 1st submersible pump. He was an engineer in the Armenian oil transportation system. The design of this pump was determined by Pleuger Pumps in 1929. Typically, this pump doesn’t require priming because it completely submerges in the fluid. However, this high-quality pump creates complexity and cannot function properly without problems, so it is never taken out of the water. These pumps are a good choice in many situations as they prevent cavitation in the pump. There are many applications of submersible pumps in different industries. For example, single-stage submersible pumps use for industrial, sewage, and drainage purposes, and multi-stage pumps are preferred for industrial, commercial, municipal, and residential purposes.

How Submersible Pump works?
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 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 with 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. In this way, submersible pumps push the water towards the surface.

Types of Submersible Pump
Submersible pumps have multiple types that mostly use in different tanks and wells. The most famous types of submersible well pumps are given below:

    • Deep Well Pump
    • Stainless Steel Pump
    • Bottom Suction Pump
    • Oil Filled Pump
    • Water Cooler Pump
    • Submersible Utility Pump
    • Mixed and Axial Flow Pump
    • Crompton Submersible Pump

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