Working Principle and Characteristics of Axial-flow Pumps

Release Date: December 06, 2011 Popularity: 277 Source: Original Content of This Site

Working Principle of Axial-flow Pumps

The working principle of axial-flow pumps is different from that of centrifugal pumps. They mainly rely on the thrust generated by the high-speed rotation of the impeller to lift water. The lift force exerted on the water by the rotating blades of the axial-flow pump can push the water from the lower position to the upper position.

The blades of an axial-flow pump are generally submerged in the sump of the water source to be drawn. Driven by the high-speed rotation of the impeller, the water is continuously pushed upward under the lift force generated by the blades, causing the water to flow out along the discharge pipe. As the impeller rotates continuously, the water is continuously delivered to higher elevations.

General Characteristics of Axial-flow Pumps

The flow direction of water in the axial-flow pump is axial suction and axial discharge through the impeller, hence the name "axial-flow pump".

It features low head (1–13 m), large flow rate and high efficiency, making it suitable for irrigation and drainage in plains, lake regions and river network areas.

It does not require priming before startup, enabling simple and convenient operation.