Liquid purification or separation – Processes – Separating
Patent
1989-05-03
1990-12-04
Fisher, Richard V.
Liquid purification or separation
Processes
Separating
137140, 137546, 210241, 210248, 210519, 298 23TT, 298 27, B01D 2128
Patent
active
049752057
ABSTRACT:
A dump truck has a tiltable dump body with a tailgate at its rear end. A partition or weir mounted in the dump body and of lesser height than the walls of the dump body divides the dump body into front and rear compartments. A siphon is connected between the two compartments and extends over the partition. The rear compartment, having a discharge opening at its rear end which is closed by a tailgate, receives dredged material in the form of a mixture of water and sand (or silt) pumped thereinto through a supply conduit on the dump body. As the rear compartment is being filled with dredged material, gravity causes the sand (silt) to settle at the bottom and the water to rise to the top and spill over the partition into the front compartment. Some water also flows through the sipon into the front compartment. The mixture is directed by the supply conduit so that the mound formed by sand settling out is initially higher near the rear end of the rear compartment to leave a clear area for water accumulation near the front end of the rear compartment. However, the mound forms progressively nearer the front end of the rear compartment. When the rear compartment is filled, a drain port is opened to discharge water accumulated in the front compartment. The relatively dry sand (silt) is then transported to a disposal site whereat it is dumped when the tailgate is opened and the dump body is tilted.
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Drodge Joseph
Fisher Richard V.
Subaqueous Services, Inc.
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