What is submersible pump

What is Submersible Pump, How Working, Types, Stage

You must have heard about the submersible water motor pump many times from the people around you. But do you know what this submersible water pump is? How do these pumps work? What is the stage in a submersible pump?

If you are willing to know all this then this article is for you. In this guide, you will learn what a submersible water pump is, how it works, Types of Submersible Pumps, and what is the stage in a submersible water pump.

What is a submersible pump?

A submersible pump is also known as an electric submersible pump or a sub-pump, it is a fully submerged pump in the water with an airtight sealed motor and the motor is close-coupled with the pump construction.

The motor is air-sealed hence allowing it to be submerged in the water or the fluid being pumped.

The fact that this pump is submerged in the water makes it more efficient as very minimal energy is required to draw water into the pump as the atmospheric pressure together with the water pressure forces the water into the pump.

Also, it protects against pump cavitation which is caused by the height difference between the water surface and the pump.

How a submersible pump works?

A submersible pump is designed to work when submerged in the water or any other fluid being pumped, thereby doing away with the need for pump priming.

This type of pump works by pushing the water from the basement to the surface by the conversion of rotating energy into kinetic energy into pressure energy.

The main driving motor enclosed in the housing of the pump is used to rotate the impeller.

As the impeller rotates, the water pressure forces the water into the pump inlet where the impeller accelerates the water and forces it out from the center of rotation towards the pump outlet through the diffuser.

Some of the submersible pumps consist of an intake screen that is used to filter out large particles that are hard to pump. A submersible pump can be used for pumping water from a depth of 25 feet to 400 feet.

Submersible Water Pumps and Their Types

As the name signifies, The submersible pump is a kind of electric water pump and can be completely submerged. The electric motor is hermetically sealed and connected to the pump. 

The motors used in these pumps are covered with oil-filled compartments, which have no connection to the material being pushed.

The principle of working of a submersible pump is that it pushes the groundwater from the rotary to kinetic and ultimately to the pressure energy.

This process can be done first by dragging the water to the pump, where the impeller’s revolution is driven by the water diffuser. So it is supplied from it.

Types of Submersible Pumps

Bladder pumps:

Bladder pumps: Bladder pumps work with non-contact, position displaced, and compressed air. This includes an enlarged bladder made of polyethylene. A display is attached below the bladder for material filtering, which can be connected to the check valves. These pumps work with compressed nitrogen tanks or compressed air. The main advantages of bladder pumps are easy operatable, small diameter, portability, and large quantities of water depending on their size.

Grinder pumps:

It is a wastewater transportation device that sends wastewater from household appliances like bathtubs, toilets, and washing machines. Grinder pumps can be used to hold the tank through the pipes used in homes.

When the sewage in the tank is in the proper position, the sewage is discharged into the septic tank. Installation of grinder pumps can be done in the yard or in the basement.

Deep well pumps:

Deep well pumps are the type of submersible pump used in municipalities. The pump is fitted with a motor. Once the pumps start working, they need to be completely submerged. Deep well pumps are used to supply fresh water and mild acidic water.

Stainless steel pumps:

Stainless steel pumps are completely covered with stainless steel and have high acidity. These pumps are often used to pump light acidic water and warm water.

Water resources such as a well can be protected by its unique cast so that freshwater can move normally. While operating, the entire stainless steel pump can sink.

Bottom suction pumps:  

Bottom suction pumps are used in lakes, rivers, ponds and mining dewatering. The design of bottom suction pumps can be done with a guide sleeve under the water pump.

These pumps use water from the bottom of the pump and have the high-class cooling characteristics electric motor. Installation of these pumps is easy in comparison with other types of pumps, as it has a long head.

What is a stage in a submersible pump?

 The working of a submersible pump is based on impellers that aid the motor in working efficiently.

An impeller is a part of a centrifugal pump used to transfer the mechanical energy from the driving motor by rotating to accelerate the water flow rate away from the center of rotation.

The term stage in submersible pumps is used to refer to the number of impellers used in a submersible pump. A submersible pump can be divided into two depending on the number of stages: single-stage pump or multi-stage pump.

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