Concave-surface oval float valve

A concave elliptical float valve relates to a valve and is provided with an elliptical valve plate, a concentric elliptical concave area is arranged in the middle of the valve plate, and five round holes with appropriate sizes are formed in the bottom of the center of the concave area and the waist of the concave area. And the symmetry axis direction of the concave area is consistent with the longand short axis directions of the ellipse. The centers of the five holes in the valve block are located on the long axis and the short axis of the ellipse. Four valve legs are symmetrically arranged at the two ends of a long shaft and the two ends of a short shaft of the oval valve block respectively, the oval circumference is evenly divided into four parts through the four valve legs, a supporting arm inclining downwards is arranged at the midpoint of each part of the oval circumference, and valve feet are arranged at the lower ends of the four valve legs. And the four valve legs are equal inheight. The technical pro