Retaining supporter of rotary sprinkler

An retaining supporter for rotary sprinkler comprising a water passage;

• the water passage has a horizontal section and a vertical section which are formed a shape like an inverted ‘T’, being disposed in an interior of a top section of a fixing supporting element, wherein an inlet water connector being disposed at an end of a horizontal section of the water passage, and a nut being mounted onto the other end of said horizontal section;
• a water outlet end of the vertical section of the water passage is mounted to a bottom end of a rotary sprinkler, and a lower section of the vertical section of the water passage is a tapered cylindrical member made by two plates which cross over one another, so that the tapered cylindrical member has a cruciform cross section, and is disposed at a lower half section of the fixing supporting element, and a width of one plate located at the bottom part of the lower section of the tapered cylindrical member is wider than that of the other plate, and an entire vertical surface of the wider plate is a curved plane and has an inverted triangle shape;
• wherein by means of the foregoing assembled structure, when the lower section of the fixing supporting element of the rotary sprinkler is inserted into the soil, the fixing supporting element will not be loosened due to the movement and vibration of the rotary module of the sprinkler and thus provides a secure structure.