hardware impeller is the key component of energy transmission. it is divided into closed semi-closed open type. different structures are adapted to different workers.

The figure shows a pump impeller. It is the core component of a pump, which transfers the mechanical energy from the prime mover to the liquid, enabling the liquid to obtain kinetic and pressure energy. The impeller is classified by structure into closed, semi-closed, and open types. A closed impeller has high efficiency and is suitable for high lift and the transportation of clean liquids. A semi-closed impeller is suitable for the transportation of liquids containing a small amount of impurities. An open impeller is used for the transportation of wastewater containing a large amount of impurities. Common materials for impellers include cast iron, cast steel, and stainless steel. Cast iron has low cost but poor corrosion resistance; cast steel has high strength; and stainless steel has strong corrosion resistance and is used in special conditions.impellerBearing bodymouth ringBearing bodymouth ringFilling material press cover machine seals the cover