This invention proposes a Venturi
cavitation device based on the swirling-orifice
coupling effect, relating to the field of fluid
cavitation technology. It includes an inlet section,
throat, and expansion section of the Venturi tube body, with hollow spiral guide vanes on the inner wall of the inlet section. The spiral guide vanes cause the fluid near the inner wall to rotate at high speed, forming a stable rotation effect and inducing a local low-pressure zone in the expansion section. This effectively counteracts the
pressure rise caused by
cavitation bursting, shortens the cavitation cycle interval, and enhances the continuity of the cavitation process. The hollow flow channel regulates and accelerates the fluid in the
central region, effectively increasing the
throat velocity and improving cavitation intensity. This invention has a compact structure, is easy to manufacture, and can simultaneously improve cavitation intensity and continuity. It is widely applicable to various fields such as
wastewater degradation, sterilization and disinfection, industrial emulsification, and oil-water mixing treatment, showing good application prospects and economic and
social benefits.