DEVICE FOR TREATMENT OF SURFACES IMMERSED IN LIQUID Russian patent published in 2000 - IPC

FIELD: performing repair jobs; cleaning any surface immersed in water and other liquids; cleaning underwater hulls of ships and water- development works. SUBSTANCE: device is provided with at least one nozzle-cavitator with at least one supply branch pipe which is communicated with central flow-through passage of head forming cavitation jet of liquid delivered under pressure through supply branch pipe. Nozzle-cavitator is provided with first group of passages for delivery of modifying agent to liquid. These passages are communicated with central flow-through passage and may be made in body of nozzle-cavitator or in body of head. Nozzle-cavitator may be provided with at least one additionally group of passages for delivery of modifying agent to liquid. Passages of additional group are located at some distance from first group of passages towards outlet of nozzle-cavitator and are communicated with central flow-through passage. Nozzle-cavitator is mounted for change of angle of inclination relative to surface being treated. EFFECT: enhanced efficiency due to addition of modifying agent. 45 cl, 3 dwg