Rotary type-based fluid pattern spraying method
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The invention discloses a rotary type-based fluid pattern spraying method which comprises a stand, a rotating body, a sliding spray pipe, a pushing guide rod and a reducing annular path. The reducing annular path is a groove arranged on the stand or a convex road fixed on the stand and surrounds around the inlet pipe axial line of the rotating body, and the radius vector size thereof is variable. Fluid enters the rotating body and is finally sprayed out of an oblique nozzle after passing through each outlet branched pipe. On one hand, the rotating body, the sliding spray pipe and the pushing guide rod together rotate around the inlet pipe axial line of the rotating body under the action of fluid kinetic moment; on the other hand, the sliding spray pipe is pushed to move to and fro relative to the rotating body by the pushing guide rod under the control of the reducing annular path, so that the fluid sprayed out of the nozzle has pattern effect. The invention has the advantages of no need of additional power, no need of automatically controlled electric apparatuses and the like.