NOZZLE HEAD FOR HYDROCAVITATION CLEANING OF PIPE-LINES FROM UNDESIRABLE DEPOSITS Russian patent published in 1998 - IPC

FIELD: removal of various impurities from pipe-lines. SUBSTANCE: nozzle head has a body with a nozzle duct for passage of working fluid, disk deflector installed at the duct outlet and having a sharp edge on the end periphery for excitation of cavitation process. The nozzle duct is made in the form of a contraction annular slot formed by cylindrical outer and tapered inner surfaces; another sharp edge is made on the periphery of the body end on the side of the disk deflector to intensify the cavitation process; both edges are formed by the tops of aligned annular bulges; the disk deflector is attached to the body end by means of a detachable joint. EFFECT: reduced overall dimensions due to a high hydrocavitation effect. 5 cl, 1 dwg