Dredging with a pressurized, rotating liquid stream
AssigneeEddy Pump Corporation
InventorHarry P. Weinrib
Life of this patent
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Abstract
An apparatus for dredging using a pump which forms a highly pressurized, rotating stream of liquid which is directed down the inlet conduit to a discharge and the momentum and energy of the rotating stream is transferred to the solids and liquids, suspending the solids to agitate and separate the same to make the solids more easily suspended. The agitated solids and liquids flow upwardly in a counter-flowing outer annular stream around the downward flowing, rotating stream. The pump is very lightweight as compared to conventional centrifugal dredging pumps and is operated at high speeds, for examble 1,000-2,000 rpm to eliminate the usual speed reducers to prevent cavitation when using the centrifugal pumps.
Claims13
A method of dredging with a pump comprising the steps of:
- creating a pressurized traveling stream of liquid within a pump casing,
- directing the pressurized traveling stream of liquid through the pump inlet and dissipating the traveling stream into the pool of liquid around the inlet,
- flowing a liquid stream bearing solids into the inlet and about the pressurized traveling stream and in a direction counter to the direction of the pressurized traveling stream,
- directing the solid bearing stream of liquid into the pump casing, and
- discharging the solid bearing stream of liquid from the pump casing.
A method of dredging with a pump comprising the steps of:
- creating a pressurized traveling stream of liquid within a pump casing,
- directing the pressurized traveling stream of liquid through the pump inlet and directing the traveling stream against a body of solids, agitating the solids and separating the solids to form a vortex stream of liquid and solids,
- flowing a liquid stream bearing solids into the inlet and about the pressurized traveling stream and in a direction counter to the direction of the pressurized traveling stream,
- directing the solid bearing stream of liquid into the pump casing, and
- discharging the solid bearing stream of liquid from the pump casing.
A method of dredging comprising the steps of:
- creating a rotating stream of liquid within a pump casing traveling at a high speed and with momentum,
- discharging the rotating high speed stream of liquid from the inlet to the pump into the solids to be dredged to impart energy to the solids to disperse and separate the solids for carrying by the liquid,
- forming an area of low pressure at the inlet,
- traveling a vortex stream of liquid bearing dredged solids upwardly through the inlet, and
- rotating the upwardly traveling vortex stream in an annular path about the downwardly traveling high speed stream,
- and discharging the solids bearing stream from the pump casing.
A method of dredging comprising the steps of:
- creating a rotating stream of liquid within a pump casing traveling at a high speed and with momentum,
- discharging the rotating high speed stream of liquid from the inlet to the pump into the solids to be dredged to impart energy to the solids to disperse and separate the solids for carrying by the liquid and forming an area of low pressure at the inlet,
- traveling a stream of liquid bearing dredged solids upwardly through the inlet and rotating the stream in an annular path about the stream traveling downwardly toward the inlet,
- and discharging the solids bearing stream from the pump casing.
Dependencies are inferred from the claim text.