DEVICE FOR TAKING GROUND OF VACUUM MACHINE FOR CLEANING OF HYDRAULIC WORKS AND WATER BASINS FROM THIN LAYERS OF CONTAMINATED SEDIMENT LOAD Russian patent published in 2009 - IPC E02B15/00 

FIELD: construction.

SUBSTANCE: invention is related to devices for cleaning of hydraulic works and water basins from thin layers of contaminated sediment load. Device comprises suction nozzle, bottom part of which contains body in the form of collapsible umbrella from waterproof cloth fixed on frame of spokes and rods, which are hingedly fixed to each other and with bushings installed on suction nozzle: lower fixed bushing and upper movable bushing, which is hingedly fixed to stem of hydraulic cylinder fixed in suction nozzle, on movable bushing displacement section of which guide bars are installed. Bars have annular projections-limiters in upper and lower positions. At that flexible sealing in the form of foam rubber cylinder is tightly fixed along perimeter of lower edge of waterproof cloth of umbrella, in top part of which openings with valves are provided. Air nozzles are installed in lower part of spokes and located horizontally in sectors formed inside umbrella cavity by radial vertical walls mounted on suction nozzle. Nozzles are installed radially, and directed oppositely along lower edge of umbrella, and are communicated to atmosphere and/or compressor by means of supply nozzles, flexible hoses fixed inside umbrella on frame spokes, annular distributor located on the surface of movable bushing, and air duct equipped with valve.

EFFECT: higher efficiency of works aimed at cleaning of hydraulic structures and water basins from thin layers of contaminated sediment load by increase of efficiency and improvement of cleaning quality.

7 dwg