What is an axial pump?

What is an axial pump?

What is an axial pump?

Let’s briefly define what an axial pump is. Axial pumps are one of the types of pumps with low head and high flow. Axial pumps are used in many applications. Axial pumps are an ideal type of pump for situations requiring high flow at low pressures. An axial flow pump is a pump in which the flow is along the shaft axis. For example, consider the propeller of a ship or boat. This is an axial pump. It works on the same principle as a ceiling fan. Axial pump is also a type of centrifugal pump that uses fluid momentum and velocity to generate the pump pressure used for higher flow rate. As with all types of centrifugal pumps, the energy transmission in axial flow pumps takes place only by “flow”.

Working principle and characteristic of axial flow pump

The axial pump is a type of dynamic pump. This pump serves to push the working fluid in a direction parallel to the axis/shaft impeller. It differs from the centrifugal pump where the fluid outlet direction is perpendicular to the axis of the impeller. Some axial pump designs have mounted blades that form a diffuser at the pump outlet. Its function is to eliminate the rotating effect of the working fluid and convert the kinetic energy it contains into working pressure. Axial pumps are used in systems that require high liquid flow discharge with low head requirement. These types of pumps are commonly used to prevent flooding and flooding.

Characteristic curves between centrifugal and axial pump

There are some differences between centrifugal pump and axial pump. Let us consider these differences as characteristic curves in a comparative way. Below we cover the differences between centrifugal and axial pump with a few items. When it comes to efficiency level, we see that both pump types have similar efficiency. Centrifugal and axial pumps have almost the same maximum efficiency levels. If the liquid flow decreases, the input power for the centrifugal pump also decreases. However, when the fluid flow in the axial pump stops, the input power is maximized. In other words, the decrease or increase in liquid flow does not affect the function of the axial pump, it continues to function at the maximum level. The head produced by centrifugal pumps is much higher than that of axial pumps.


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