Water feeding port with novel structure

The utility model discloses an upper nozzle with a novel structure. The upper nozzle comprises an upper nozzle body, a zirconium bowl, an inner hole body and a zirconium core, a through hole is formedin the center of the upper nozzle body, the upper hole is a big-end-up conical hole, the lower hole is a stepped straight hole, the straight hole is divided into an upper section, a middle section and a lower section, and the diameters of the straight holes are sequentially increased from top to bottom. The zirconium bowl is arranged at the upper part of the upper nozzle body and is matched withthe taper hole at the upper part of the upper nozzle body through the conical surface; the inner hole body is arranged in the middle of the upper nozzle body, and the zirconium core is arranged on thelower portion of the upper nozzle body. The inner hole diameter of the zirconium core is the same as the diameter D of the upper section hole of the upper nozzle body; and the inner hole diameters ofthe zirconium bowl and the