What are the main parts of the pump

The impeller is also known as the working wheel or the runner, and its function is to transfer the mechanical energy of the power machine to the liquid being pumped, so that the current flows through the impeller to increase the energy. When selecting the impeller material, in addition to considering the mechanical strength under the action of centrifugal force, the wear resistance and corrosion resistance of the material should also be considered. At present, the impellers are mostly made of cast iron, cast steel and bronze.

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The function of the pump shaft is to support and drive the impeller to rotate, and transmit the energy of the power machine to the impeller. It is required that the pump shaft end is straight and has sufficient strength and rigidity to avoid damage to the impeller and the pump casing due to the vibration of the impeller due to the bending of the shaft during pump operation. The pump shaft is generally made of carbon steel or stainless steel.
The pump casing of the centrifugal pump is a volute-shaped casing that contains and conveys liquid, which consists of a pump cover and a volute-shaped body. The pump cover is the suction chamber of the pump, and its function is to guide the water in the suction pipe to the impeller evenly with minimal loss.

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