PROCEDURE FOR BASIN BOTTOM ANTI-FILTER SCREENING Russian patent published in 2011 - IPC E02B3/16 

FIELD: machine building.

SUBSTANCE: water-colloidal suspension is prepared of micro-dispersed mud. It is supplied to a specified point through flexible pipeline (12). Further, specified amount of suspension is discharged through long-length tube to bottom (8) of basin (7). Long-length tube in its middle part (13) is conjugated with flexible pipeline (12) by means of inlet branch (14) through collar (37). Long-length tube (13) is equipped with discharge nozzles (15) and with plates (16) bent on ends. Discharge nozzles (15) are arranged along length of long-length tube (13). Plates (16) on ends of long-length tube (13) facilitate its sliding along bottom (8) of basin (7). Pressure level in flexible pipeline (12) ensures generation of specified force actuating transfer of long-length tube (13) in the direction of its motion along bottom (8) of basin (7) as well, as washout and stirring-up sediments (6) with jets of suspension (28). Washed out layer (36) of sediments is mixed with suspension of jets in specified volumes. In the process of settling these volumes form anti-filtration screen (29) on a strip of the basin bottom treated in such way.

EFFECT: reduced time for forming screen, raised uniformity of mud distribution in screen and of density of sediments in screen.

5 cl, 4 dwg