公开(公告)号：US5379982A

公开(公告)日：1995-01-10

申请号：US209903

申请日：1994-03-14

申请人： Mutsunori Koyomogi ,  Yukio Minami ,  Masahiko Nakazawa ,  Kazuhiro Yoshikawa ,  Tetsuya Kojima

发明人： Mutsunori Koyomogi ,  Yukio Minami ,  Masahiko Nakazawa ,  Kazuhiro Yoshikawa ,  Tetsuya Kojima

IPC分类号： F16K1/00 ,  F16K1/10 ,  F16K41/10 ,  F16K51/00 ,  F16K49/00

CPC分类号： F16K41/10 ,  F16K1/10 ,  Y10T137/7036

摘要： A control valve comprises a valve body having a fluid channel and a valve seat; a valve operating part; a valve stem supporting member having its upper end fixed to the valve operating part and its lower end fixed to the valve body; a valve stem penetrating the valve stem supporting member and having its upper end part connected to the valve operating part and its lower end part entering the valve body, the valve stem being movable upward or downward by the valve operating part; and a valve element attached to the lower end of the valve stem. The valve element is moved upward or downward by moving the valve stem upward or downward, the valve element being brought into contact with and seated in the valve seat to close a fluid channel as it is moved downward, the valve element being detached from the valve seat to open the fluid channel as it is moved upward. The valve stem comprises an upper bar-shaped member of metal connected to the valve operating member and a lower bar-shaped member made of a fiber reinforced plastic to which the valve element is attached. The upper and lower bar-shaped members are movable upward from a lower end position where the valve element is in a fully open state. The lower bar-shaped member is stop from moving upward at an upper end position where the valve element is in a fully open state. An uppward moving distance of the upper bar-shaped member from a lower end position is made longer than a moving distance of the lower bar-shaped member from the lower end position to the upper end position.

摘要翻译： 控制阀包括具有流体通道和阀座的阀体; 阀门操作部分; 阀杆支撑构件，其上端固定到阀操作部分，其下端固定到阀体; 阀杆贯穿阀杆支撑构件，其上端部分连接到阀操作部分，其下端部分进入阀体，阀杆可由阀操作部件向上或向下移动; 以及附接到阀杆的下端的阀元件。 阀元件通过向上或向下移动阀杆而向上或向下移动，阀元件与阀座接触并安置在阀座中，以在其向下移动时闭合流体通道，阀元件从阀门拆下 座椅向上移动以打开流体通道。 阀杆包括连接到阀操作构件的上部金属板状金属构件和由附着有阀元件的纤维增强塑料制成的下部杆状构件。 上下条形构件可从阀元件处于完全打开状态的下端位置向上移动。 下阀杆件在阀元件处于完全打开状态的上端位置处停止向上移动。 上部条形构件从下端位置向上的移动距离比下部杆形构件从下端位置到上端位置的移动距离长。