Improved radial impeller for a centrifugal pump

摘要

An improved impeller for a centrifugal pump is disclosed. The impeller is particularly suited for use in pumps in which a high head is required and in which only low shear forces must be applied to the fluid moving through the pump. The impeller comprises vanes which sweep an arc around an impeller axis to provide a smooth path past the impeller and through the pump. The vanes of the impeller are formed to cause the fluid moving over the vanes to apply a hydrodynamic force to the vane that opposes the force applied to the vane by fluid as the vane urges fluid through the pump. An impeller according to this invention does not require the supporting structures that are required by known impellers.