The working principle of a water cannon rain gun is: the water wheel driven by the powerful water flow drives the vortex rod to rotate, which then drives the turbine, and transmits it to the universal rod, and then back to the vortex rod. So the rain gun will rotate at a uniform speed. Its structure is much more complex than ordinary sprinkler guns is simpler. Turbine vortex rods are generally made of stainless steel or alloys. There are many sophisticated manufacturing processes such as wheel teeth aligning, quenching and grinding etc. Stainless steel bearings are also required for the positioning and fixing of the vortex rod.
Water cannon rain gun acts on the power water wheel through the strong water flow, thereby driving the vortex rod and then through a series of transmissions such as universal rods to realize the uniform rotation of the rain gun. It rotates at a uniform speed, sprays evenly, and has the advantages of long range, large coverage.