Innovative Gate Valve

Patent Granted This new innovative planetary motion valve will supply an advanced gate valve featured with following effects. Small occupied space Quick open and close Operating force is decreased by reducing friction on valve guides. No need to perform adjustment ( processing ) for assuring the closing function. These above benefits are provided by special planetary motion design. As described above, this innovative gate valve provides the valve as follows. During the opening and closing motions of the valve, the valve plate having degrees of freedom can effectively demonstrate the degrees of freedom by the rolling motion. In this manner, the seal faces of the valve plates can easily follow the seal faces of the two opposite valve seats, and are tightly seal with the seal faces of the two valve seats. Therefore, the closing function of the valve is greatly improved, the adjustment process is reduced, and the manufacturing is more cost-effective because of the relatively large degrees of freedom. In another aspect, the thrust required by the valve plates is transmitted from the driving gear and through the planetary component. As a result, the driving force applied on the driving shaft is one half of the thrust required for the opening and closing of the valve under leverage effect. Further, the rolling motion of the valve plates can reduce the friction loss of driving transmitting force. Hence, the operating force for the opening and the close of the valve is reduced. Further, the opening and the closing speeds are relatively high to achieve quick opening and closing, and the space occupied is reduced.