Abstract A mixer pump suitable for, but not restricted to, use in pumping water from a receiving tank in a municipal water supply system or the like and including means for separately injecting a plurality of chemical treating agents or the like into the water being pumped. In the illustrated embodiment, means are provided for separately injecting a plurality of chemical treating agents each at a plurality of spaced locations into the water stream on the suction side of the pump impeller whereby the chemical treating agents in passing through the impeller are intimately mixed with the water; and means are additionally provided for separately injecting a plurality of additional chemical treating agents each at a plurality of spaced locations into the interior of the pump housing on the discharge side of (i.e., downstream of) the impeller, particularly on the discharge side of the pump diffuser if there is a pump diffuser.
An injection nozzle for use in injecting a treating agent or the like into a fluid stream passing through a conduit or the like, said injection nozzle being adapted to be mounted with its longitudinal axis extending in a direction inwardly of the periphery of said conduit or the like and into said stream, said nozzle including a discharge opening which is cut on a bias relative to the longitudinal axis of said nozzle, whereby said discharge opening is elongated in said direction to distribute the treating agent into said fluid stream along an elongated path extending in said direction, said injection nozzle including a hollow fluid passage for said treating agent or the like, said hollow fluid passage being bounded by and defined by a pair of spaced substantially parallel walls which are flat in the direction of flow of said fluid stream, whereby to reduce resistance to the flow of said fluid stream past said nozzle, corresponding longitudinal edges of said spaced parallel walls being connected to each other by arcuate walls in bounding relation to said hollow fluid passage.
Claim 2
Dependent Claim
182 words
An injection nozzle for use in injecting a treating agent or the like into a fluid stream passing through a conduit or the like, said injection nozzle being adapted to be mounted with its longitudinal axis extending in a direction inwardly of the periphery of said conduit or the like and into said stream, said nozzle including a discharge opening which is cut on a bias relative to the longitudinal axis of said nozzle, whereby said discharge opening is elongated in said direction to distribute the treating agent into said fluid stream along an elongated path extending in said direction, said injection nozzle including a hollow fluid passage for said treating agent or the like, said hollow fluid passage being bounded by and defined by a pair of spaced substantially parallel walls which are flat in the direction of flow of said fluid stream, whereby to reduce resistance to the flow of said fluid stream past said nozzle, corresponding longitudinal edges of said spaced parallel walls being connected to each other by arcuate walls in bounding relation to said hollow fluid passage.