This invention provides an impeller for a single stage or a multiple stage centrifugal pump which is adapted to be rotatably mounted in a pump casing and receive fluid from an axial inlet opening.Water Control valves The impeller includes a drive shaft which has a plurality of vanes or blades mounted thereon, and which are radially disposed, and circumferentially spaced apart. The blades may be either curved or straight along the length thereof, and at least four of such vanes or blades are required. The vanes or blades may be straight or backwardly bent. The impeller may be of the open type, with the contour of the blades fitting the contour of the pump casing, or the impeller may be of the enclosed type with the vanes or blades being provided with integral shrouds.FORGED STEEL VALVES The quantity or amount of fluid flow of a liquid or gas, through the impeller is outwardly from the axis or center of the impeller. In accordance with the principles of the present invention, the area into which the pump is discharging has to be the same or larger than the total circumferential area at the discharge tips of the vanes or blades. Symmetrical blades give an equal outward pressure on both sides thereof and are preferable, but the blades can be of any shape if the circumferential area at the discharge tips thereof are the same.Water Power Control Valves The size of the vanes or blades can be made to a proper size for a desired rate of flow at any given point in accordance with the rate of acceleration from the center of the impeller outward.

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2011-12-29

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