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    • 2. 发明授权
    • Motor operated butterfly valve with a multi-function seal
    • 带多功能密封的电动蝶阀
    • US5681025A
    • 1997-10-28
    • US375869
    • 1995-01-20
    • Weldon R. KuhnJohn A. FiumefreddoIsadore BalanKenneth J. Sieth
    • Weldon R. KuhnJohn A. FiumefreddoIsadore BalanKenneth J. Sieth
    • F16K1/226F16K27/02F16K31/04H02P1/22
    • F16K1/2268F16K27/0218
    • A fluid valve has a housing formed by first and second halves which combine at mating surfaces to form a cavity with an inlet in the first half and an outlet in the second half. The mating surface of each half includes a notch extending between an outer edge of mating surface and the cavity, and includes an annular recess around the cavity. A pad is formed on each mating surface between the cavity and the annular recess, and has a groove that forms a bushing when the first and second units are connected. A butterfly valve member is located within the cavity and is mounted on a valve stem. The valve stem has an end that rides in the bushing and a portion that passes through the notches in the housing halves. An annular seal fits within the recesses to prevent fluid leakage between the two housing halves and also seals around the valve stem portion. In addition the butterfly valve member engages the seal in a closed state of the valve.
    • 流体阀具有由第一和第二半部形成的壳体,第一和第二半部在配合表面处组合以形成具有前半部分中的入口和后半部分中的出口的空腔。 每个半部的配合表面包括在配合表面的外边缘和空腔之间延伸的凹口,并且包括围绕腔的环形凹部。 在腔和环形凹部之间的每个配合表面上形成衬垫,并且当连接第一和第二单元时,具有形成衬套的凹槽。 蝶阀构件位于空腔内并安装在阀杆上。 阀杆具有穿过衬套的端部和穿过壳体半部中的凹口的部分。 环形密封件装配在凹槽内以防止两个壳体半部之间的流体泄漏并且还围绕阀杆部分进行密封。 此外,蝶形阀构件在阀的关闭状态下接合密封件。