Method for sucking up soil or sludge by means of a suction hoppe

Details Method for sucking up soil or sludge by means of a suction hoppe Method for sucking up soil or sludge by means of a suction hoppe

1982-09-16

1984-03-20

Crowder, Clifford D.

Excavating

Peat excavators

E02F 388

Patent

active

044372442

ABSTRACT:
A method for sucking up soil or sludge by means of a suction dredge provided with a suction pipe having a drag head. Through the suction pipe (1) water and soil or sludge are sucked up. The soil or the sludge is loosened in front of the inlet opening of the drag head. Said loosening operation takes place at such a distance from the inlet opening (4) of the drag head (3) that by the loosening operation the gases being liberated remain substantially out of the suction action of the drag head (3). The loosening is performed by injection nozzles (28) and/or cutting blades mounted in a frame (10) swingably mounted about a horizontal axis (9) on the suction tube (1).

REFERENCES:
patent: 660956 (1900-10-01), Henderson
patent: 1572472 (1926-02-01), Doren
patent: 3618236 (1971-11-01), Pipkin
patent: 4146982 (1979-04-01), Norisugi
"The Hopper Dredge", (1954), p. 284.

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