Rotary sprinkler head and spraying device

A rotary sprinkler head comprising:

• a main body having a shell shape, said main body having an interior that defines a chamber therein, said main body having a water inlet end and a water outlet end at an axially opposite end, the chamber having a vertical front axis line that extends from the water inlet end to the water outlet end, the chamber having an annular first space and a second space, the annular first space extending so as to connect with the second space, said main body having a plurality of positioning stops in spaced relation, the plurality of positioning stops being connected to the water outlet end, a water outlet passage extending through a side of each positioning stop of the plurality of positioning stops that faces a direction of a virtual first axis line, wherein one end of the water outlet passage is connected the chamber, another end of the water outlet passage extending to the water outlet end, wherein multiple discharge channels are moved between adjacent positioning stops of the plurality of positioning stops, each discharge channel of the multiple discharge channels connected the water outlet passage and the annular first space, each discharge channel of the plurality of discharge channels extending to the water outlet end, wherein said main body has a conical surface annularly surrounding the chamber, the virtual first axis line passing through a center circle of the conical surface, wherein a diameter of the conical surface decreases along the virtual first axis line from the water inlet end toward the water outlet end;
• a rotating body received in the chamber of said main body, said rotating body having an abutting segment and a convergent segment, one end of the abutting segment abutting each positioning stop of the plurality of positioning stops, the convergent segment being adjacent to an end of said rotating body remote from the abutting segment, wherein a radial outer periphery of the convergent segment is conical such that an outer diameter thereof increases from an end of the convergent segment adjacent to the abutting segment toward an opposite end thereof, the convergent segment and the conical surface being radially opposite to each other, the abutting segment having a flow guiding passage extending therethrough so as to connect with the water outlet passage, wherein a virtual second axis line is defined passing through a radial center of the flow guiding passage, the virtual second axis line obliquely intersecting the virtual first axis line, wherein a conical flow converging passage extends through an interior of the convergent segment so as to connect the flow guiding passage and the second space, wherein an inner diameter of the flow converging passage increases from an end adjacent the flow guiding passage toward an opposite end of the flow converging passage;
• and
• a limiting member positioned at the water inlet end, the second space located between said rotating body and said limiting member, a water inlet port extending through said limiting member so as to allow water to enter the second space through the water inlet part and then to flow through the annular first space and the flow guiding passage and to cause said rotating body to rotate in order to create a circular motion of a vortex shape with the virtual first axis line at a center thereof, wherein said main body has multiple surrounding blocks annularly surrounding a radial outer part of the abutting segment, each discharge channel of the plurality of discharge channels extending between a pair of adjacent surrounding blocks of the multiple surround blocks, the annular first space extending between each surrounding blocks of the multiple surrounding blocks and the abutting segment so as to connect to each discharge channel of the plurality of discharge channels.