| 摘要 |
A slurry agitation apparatus for selectively agitating slurry temporarily stored in the interior of a storage tank, which slurry contains heavier-than-liquid solids and is at least somewhat pumpable, comprises a slurry circuit having connected together in seriatim, and in fluid communication through pipes one with the next, an outlet disposed in the sump pit in fluid communication with the interior of the storage tank to permit egress of the slurry therefrom, a flow control valve, a selectively controllable slurry pump, and a discharge nozzle. The discharge nozzle is rotatably mounted in surrounding sealed relation on a substantially vertical spigot securely mounted on the concrete foundation of the storage tank, for selective rotation of the discharge nozzle about a substantially vertical main axis, and has a spout portion in fluid communication with the interior of the storage tank and oriented to emit the slurry from the spout portion as a generally horizontally directed discharge. A hydraulic circuit has connected together in seriatim, and in fluid communication through hydraulic piping one with the next, a selectively controllable hydraulic pump and a selectively operable hydraulic motor mounted within an enclosure located in the storage tank on the foundation, so as to be engaged in driving relation with the discharge nozzle. The discharge nozzle is selectively rotatable about its substantially vertical main axis. When slurry is being discharged from the discharge nozzle, there is a corresponding change in the horizontal direction of the discharge of slurry. The discharge nozzle may be selectively rotated even though a discharge operation is not being carried out; and the discharge nozzle may be stationary for a selected period of time during a discharge operation.
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