초록 ▼

A dredging apparatus for dredging waterways containing sediment includes a hood having a passage for water and sediment to enter the hood under the influence of a submersible dredge pump apparatus. The dredge pump apparatus includes an inlet line having an inlet opening positioned in the passage of

A dredging apparatus for dredging waterways containing sediment includes a hood having a passage for water and sediment to enter the hood under the influence of a submersible dredge pump apparatus. The dredge pump apparatus includes an inlet line having an inlet opening positioned in the passage of the hood, and an outlet line which communicates with the inlet line and extends exteriorly to a spoil collection area. A dredge pump draws water and sediment from within the passage into the inlet opening and through the inlet and outlet lines. To prevent clogging of the inlet line by sediment and ensure a continuous dredging operation, replacement water is introduced adjacent to the inlet opening from a water source in response to sensed pressure variations in the inlet line caused by the onset of clogging. A closed dredging circuit is created by using the spoil collection area as the source of replacement water.

대표청구항 ▼

A dredging apparatus for dredging a waterway containing sediment, comprising: a submersible hood having an entry passage for water and sediment; a submersible dredge pump apparatus comprising a housing, an inlet line having an inlet opening in communication with the entry passage of said hood, an ou

A dredging apparatus for dredging a waterway containing sediment, comprising: a submersible hood having an entry passage for water and sediment; a submersible dredge pump apparatus comprising a housing, an inlet line having an inlet opening in communication with the entry passage of said hood, an outlet line in communication with said inlet line and extending exteriorly from said housing, a dredge pump adapted to draw water and sediment from within the entry passage into said inlet opening and through said inlet line and said outlet line, and supply means for supplying replacement water from a water source into the entry passage adjacent to said inlet opening in response to pressure variations in said inlet line, said supply means being adapted to supply an effective amount of replacement water said entry passage to eliminate clogging of said inlet line by sediment.