Importance

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Abstract

A reversible turbine pump includes a pair of end walls and a side wall defining an annular pumping chamber. A turbine impeller mounted for reversible rotation in the chamber includes a rigid input shaft. One end of the shaft extends through one end wall and is sealed from the chamber. A spring biases the other end of the shaft toward the other end wall. Cooperating thrust bearing members, mounted to the other end of the shaft and the other end wall, provide a large planar area of low friction engagement therebetween. The pumping chamber has a pair of inlets, a pair of outlets and a dam. The first inlet and second outlet are on one side of the dam while the second inlet and first outlet are on the other side of the dam so that reverse rotation of the impeller pumps fluid in opposite directions through a different set of inlet and outlet. Valves associated with the inlets and outlets permit fluid flow in the desired direction and prevent fluid flow in the opposite direction.

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First Claim