Centrifugal channel impeller with enlarged vanes

Abstract From the Canadian patent

The impeller plate of an impeller of a centrifugal pump that is drivable via a shaft, more particularly a channel impeller pump for pumping liquids with solid , or gaseous admixtures, which is provided with at least one wide vane is , displaced , toward the drive by a distance D so that the impeller chamber is enlarged by a portion , located rearwardly thereof. In addition according to a preferred embodiment, the impeller comprises at least one auxiliary vane whose center width is preferably equal , to approx. 50% of the width of the wide vane. This arrangement improves particularly , the gas transporting ability of the pump.