Patent ID: 6991362

Claim:
A tank agitator for connecting onto the terminus of a generally steady flow, low head feedwater line and causing agitation in the tank by the discharge of the feedwater in part through a rotating discharge port and in other part through a pulse discharge port, comprising: a housing having an inlet for connection to the feedwater line, a turbine mounted in the housing and driven to spin by inflow of the feedwater, a nozzle operatively connected to the spinning turbine such that the nozzle rotates with respect to a given rotation axis, and, the nozzle defining a rotating discharge port for discharging a stream in various directions, not all of which are continuously coincident with the given rotation axis during a complete rotation of the nozzle, a pulser arrangement for enhancing the agitation in the tank by means of the discharge of a fractional amount of the feedwater inflow through a pulse-discharge port which is distinct from said rotating discharge port and in which the discharge stream pulses between alternating phases of flow and quiescence, the pulser arrangement comprising: providing the housing with an pulse-discharge port in the housing to the outside; and, a blocker door coupled to and driven by the spinning turbine to cycle between blocking the fractional amount of feedwater inflow thereto and unblocking such, such that a discharge stream issues from the pulse-discharge port pulses between alternating phases of flow and quiescence.