Submersible Pumps: How They Work and What They’re Used For

Introduction

The world of pumps and their various applications can be complex and confusing. However, one pump stands tall amidst the sea of pumping equipment: the submersible pump. This vital device plays a crucial role in many areas of life, from home water systems and farming to industrial and municipal use. In this guide, I will delve into the inner workings of the submersible pump, explaining how they work, their advantages, how to choose and maintain them, and much more!

What Is A Submersible Pump?

Simply put, a submersible pump (also known as a sump pump) is a type of pump that needs to be completely immersed in liquid during operation[^1^]. Submersible pumps are unique in that they are designed and manufactured to function seamlessly under water for extended periods, mainly thanks to a waterproof (or more accurately, water-resistant) design.

How Do Submersible Pumps Work?

Submersible pumps work based on a simple principle. When the pump is submerged in liquid, the pump motor turns the impeller, creating centrifugal force that drives the liquid out of the pump. Because they’re completely sealed, submersible pumps can work efficiently even under hundreds of feet of liquid. The direct displacement of fluid occurs through a set of rotating impellers and a volute or diffuser style casing[^2^].

Where To Use Submersible Pumps?

Submersible pumps have a diverse range of applications. Notably, they are used in:

  • Irrigation: Submersible pumps are used to draw water from wells or reservoirs to irrigate crops.
  • Domestic Use: They’re used in homes for draining flooded basements or garages, emptying swimming pools, and draining water heaters.
  • Industrial Use: Industries use submersible pumps for a slew of applications, including sewage treatment, oil and gas production, and mining.

What Are The Advantages Of Submersible Pumps?

Submersible pumps are favored for many reasons, the most pivotal of which include:

  • Efficiency: Their underwater operation eliminates pump cavitation, a problem that reduces efficiency in pumps when there’s a high disparity in elevation between the pump and the fluid surface.
  • Versatility: They can handle all sorts of liquids, including corrosive and abrasive substances.
  • Quiet Operation: By nature, submarine pumps operate quietly, as they’re submerged under water.

How To Choose A Submersible Pump?

When selecting a submersible pump, consider the following:

  • Pump’s Capability: The pump’s capacity, pressure, power, and build quality should meet your requirements.
  • Type of Liquid: Different pumps are designed to handle different types of liquids. For instance, wastewater pumps are suited for sewage and other dirty water.
  • Maintenance Requirements: Some submersible pumps are designed for heavy-duty use with minimal maintenance.

How To Maintain Your Submersible Pump?

Despite their rugged design, submersible pumps do need some upkeep to ensure they stay in good working order. It includes cleaning the pump, checking seals and gaskets for leaks and cracks, and testing the pump periodically to ensure it’s working properly[^3^].

Conclusion

In conclusion, submersible pumps are indispensable when it comes to pumping under water. Not only are they highly efficient, but they offer a level of flexibility not found in many other types of pumps. By familiarizing yourself with the ins and outs of a submersible pump, you can ensure you choose the right one for your application and keep it working optimally for years to come.

[^1^]: Pump school
[^2^]: Engineers Edge
[^3^]: National Pump Company

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