DEVICE FOR FLUSHING NETTED SHEET OF FISH PROTECTION STRUCTURE Russian patent published in 1994 - IPC

FIELD: jet flushing devices. SUBSTANCE: device operates as follows. During operation of pump 2 installed on truck 1, water is supplied to flushing tube 3 and through holes 4, in form of jets, to hollow 7 which is filled with water coming through slots 9 with shutting-off mechanisms opened, that is realized by bleeding air from flexible shells 11 through air duct 12 and regulator 13 to atmosphere. Jets in hollow 7 eject water and through nozzles 8 jets are directed onto netted sheet to clean it from rubbish. To change over the device to conditions of water-air flute, slots 9 are closed by means of air supply under pressure from its source to flexible shells 11 through air duct 12 and regulator 13. Water from hollow 7 is ejected by jets through nozzles 8, and emptied space of hollow 7 is filled with air through upper end of semitube 6 communicated with atmosphere and ejected by water jets thus forming air-water flushing jets cleaning netted sheet 5 from rubbish. Device is changed over to water flute regime by bleeding air from flexible shells 11 through regulator 13. After emptying flexible shells, water fills hollow through slots 9. EFFECT: higher efficiency of operation under conditions of considerable variation of atmospheric air temperature by regulation of operating conditions. 4 dwg