DEVICE FOR CLEANING NETTED WEB OF FISH PROTECTIVE STRUCTURE Russian patent published in 2005 - IPC

FIELD: hydraulic structures, particularly fish-protective structures built in water-intakes.

SUBSTANCE: device comprises tube to convey rubbish and fish, tray to remove rubbish and fish arranged in upper part of netted web and control means to control device operation. Tube to convey rubbish and fish is arranged in front of netted web from inlet channel side and has water inlet orifice facing netted web and extending along rubbish and fish conveying tube height. Upper part of above tube is inserted in cart and may be moved along netted web. Control means is provided with pump communicated with water pipe. Water pipe has nozzles, mixing chambers and cowl and is arranged in oval-shaped chamber. Water inlet orifice is made as vertical slot arranged in front of outlet orifices of water pipe nozzles, which are arranged in parallel to netted web plane and directed towards inlet parts of mixing chambers located at spaced apart locations along rubbish and fish conveying tube. Outlet orifices of water pipe are coaxial to inlet parts of mixing chambers. Rubbish and fish conveying tube has tangential inlet facing netted web and adapted to receive mixing chambers of ejectors. Cowl faces netted web by convex side thereof and is fixedly secured to side surface of water pipe by one end. Another cowl end forms water inlet orifice of the oval-shaped chamber.

EFFECT: possibility to create hydraulic conditions necessary and sufficient for netted web cleaning of dirt, fish and algae stuck to it.

6 cl, 8 dwg