NOZZLE HEAD Russian patent published in 1996 - IPC

FIELD: chemical engineering. SUBSTANCE: means for communication of cross hole with channels of structural member of nozzle-holder are made in the form of at least one flow-passage hole. Mouth of cross hole and that of flow-passage hole are located directly opposite each other at least in one angle position α of structural member of nozzle-holder relative to hull for through connection between feed line and spraying nozzle. In another angular position b of structural member of nozzle-holder relative to hull the mouth of cross hole and that of flow-passage hole are superimposed for interrupting the through connection between feed line and spraying nozzle. Water jets going out of rotating spraying nozzles during exploitation and covering the cylindrical surface concentric to axis of rotation are interrupted in outer zones by nozzle head parallel to direction of water feed. EFFECT: enhanced quality of surface cleaning as well as of removing surface coats with tool having rotating spraying nozzles loaded with rising water under high pressure. 6 cl, 8 dwg