| 摘要 |
<p>An improved structure of a floating-ball valve for industrial fluid comprising a valve seat, a valve insert, a cap, a crankshaft, a float and a floating arm, wherein a valve chamber is formed at the internal of the valve seat, and together with a water inlet are pipe hole of various diameter, the lower section of the valve chamber is provided with a water outlet and an elongated slot, at the bottom of the valve seat, a pair of corresponding protruded members are provided, and each is pivotally mounted with a rocking arm, one end of the crankshaft is connected to the floating arm, the valve insert is mounted within the valve chamber characterized in that a vertical water-blocking wall is formed in between the valve chamber and the water inlet, and the valve insert consists of a metallic valve stem and a plastic valve plug, the valve plug has a front protruded rim and a rear conic face, the external wall of the protruded rim is sealable with the wall of the water inlet to form a first water-blocking structure, and the conic face is sealable with the wall hole of the water-blocking wall to form a second water-blocking structure, the crankshaft is substantially L-shaped and pivots in between the two protruded members, the top end of the crankshaft is a rocking member being inserted into a cylindrical slot, and the other end is connected to the end of the floating arm, and an opening at the end of the valve seat is provided with a plurality of external threads for mounting with a threaded cap to seal the opening.</p> |
