FISH-PROTECTIVE STRUCTURE Russian patent published in 2008 - IPC E02B8/08 

FIELD: fish protection structures, particularly ones to be installed in water-intake structures and used for mesh web cleaning.

SUBSTANCE: flushing device for fish-protective structure mesh web cleaning comprises vertical perforated pipe with perforation orifices facing mesh web. The perforated pipe may reciprocate along mesh web by means of drive made as winch with rope. Supply system is made as pump connected to main pipeline, pressure connection pipe and electric gate secured to main pipeline through bend from the first side and with fixed section of supply pipeline from another side thereof. The fixed supply pipeline is linked to supply pipeline section, which may be turned along mesh web. Outlet part of supply pipeline is connected to perforated pipe. Guiding means for supply pipeline and perforated pipe movement are located over water level. Perforated pipe is connected to drive by winch rope and has support rollers, as well as vertical position fixer made as monorail fixedly connected to load-bearing frame of service bridge. The structure has winding drum and guiding member having horizontal axes of rotation, water-receiving and distribution chambers, aerator with eater-supply connection pipe communicated with mixing chamber, as well as flexible hoses. Fixed supply pipeline section has length equal to that of mesh web. Movable supply pipeline section, which may rotate along mesh web, is made as flexible hose system having diameters less than supply pipeline diameter and united in common loop. The flexible hoses are wound around winding drum. The first flexible hose ends are connected to winding drum axis used as water-receiving chamber. The second ends thereof are secured to movable distribution chamber. The movable distribution chamber is made as cylindrical pipe connected to U-shaped perforated pipe inlet. Perforation pipe orifices are located at rear U-shaped pipe end. Front U-shaped pipe end has aerator. End part of fixed supply pipeline section is connected to winding drum axis through bend. Guiding member adjoins winding drum side and is tangent thereto. Guiding rollers for flexible hose system movement are made as cylindrical rollers with horizontal axes of rotation, which are connected to service bridge and distributed along total mesh web length. The cylindrical rollers create conveyance tray located under plane of cylindrical connection pipe of movable distribution chamber movement. Upper part of perforated pipe is secured to carriage having support rollers with horizontal rotation axes located in additional guiding monorails over and under horizontal flanges thereof.

EFFECT: increased reliability of flushing device and supply system thereof.

16 cl, 35 dwg