Centrifugal pumps

What are centrifugal pumps used for ?

Centrifugal pumps are by no means a specialised pump category, they come in all sorts of sizes and designed for many duties. For example, single stage pumps are the most common for fluid transfer at high flow rate and low pressure - emptying a swimming pool. If however a lower flow rate or a higher pressure is needed - multistage centrifugal pumps is the alternative. Centrifugal pumps can be found doing any job, although specialised pumps will give you better performance for price and energy consumption.

What is a centrifugal pump ?

A centrifugal pump is a pump type; a classification that is given to pumps that make use of centrifugal force to move the liquid they are pumping

What is centrifugal force ?

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Centrifugal force is not necessarily a force on it's own but a name for a specific situation where kinetic force or energy results in a circular motion. Object that experience centrifugal force radiation outwards from the centre of the source of this force. This phenomenon can be observed basically anywhere there spinning objects.
If you kick or throw a ball fast enough you will notice that it warps a little, becoming narrower that is because the centrifugal force is forcing the object outward and it naturally forms the highest force on the centre line of the object (assuming it's mass is even).

How does a centrifugal pump work ?

The centrifugal pump structure

Centrifugal pumps use rotating impellers made with vanes that direct the fluid that is being pumped. Impellers are sealed in a casing so that the centrifugal force generated can only escape through the desired outlet. The pump can essentially be thought of in two main parts: a motionless or static part - casing (volute), stuffing box, and bearings. The second: the rotating parts which include impeller and shaft.

How the pump works

Centrifugal pumps use kinetic energy to move fluid, with a circular pump casing and an impeller the fluid can be directed to the outlet. A the impeller draws fluid in which creates a negative pressure situation at the inlet that causes more fluid to travel into the pump in an attempt to equalise the pressure. This is where the engineering design of the pump housing plays a big role: the incoming fluid is contained within the pump while the impeller continues to draw in more fluid, this creates increase pressure and the impeller and volute are designed together to send the fluid travelling out at a high pressure. Centrifugal pumps can achieve very high flow rates by forcing fluid through without cupping.

Where can I get a centrifugal pump ?

Centrifugal pumps are common but, they are not swimming pool pumps. You may have to look at dedicated water pump shops like SuperPump water pumps. SuperPump makes use of delivery services to reach customers nation wide as we understand finding a pump that suits your needs can be troublesome. If you know exactly what your looking for have a look at our online shop or if you would like a professional pump recommendation contact us via email phone or on Social media

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