FIELD: process engineering.
SUBSTANCE: invention relates to devices feeding swirled jet of fluid or gas. In compliance with this invention, screw nozzle comprises rigid connecting section and flexible case of variable non-round cross section formed by corsets. Note here that said connecting section has non-round cross section of, preferably, ellipsoid shape, while said corsets represent diaphragms arranged to move axially. At least one of diaphragms can have round orifice.
EFFECT: fast-to-adjust cross section and jet shape, simple design.
4 dwg
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