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    Valve seat self cleaning device for alumina production plants
    1.
    发明授权
    Valve seat self cleaning device for alumina production plants 失效
    氧化铝生产厂的阀座自清洁装置

    公开(公告)号：US06273121B1

    公开(公告)日：2001-08-14

    申请号：US09463126

    申请日：2000-01-19

    申请人： Juan José Goñi Usabiaga

    发明人： Juan José Goñi Usabiaga

    IPC分类号： F16K2900

    CPC分类号： F16K31/50 ,  F16K29/00 ,  Y10T137/4322 ,  Y10T137/6253

    摘要： This valve is applicable in conduction of bauxite in pipes and is meant to allow the self-cleaning of the valve with the aid of a locking cap which connects the drive crown and the valve shaft, causing the rotation of said crown to be transmitted to the valve shaft, which as it rotates rubs on the valve seats, thus removing the depositions.

    摘要翻译： 该阀适用于管道中铝土矿的导电，其目的是允许通过连接驱动冠和阀轴的锁定帽来自动清洁阀门，导致所述表冠的旋转传递到 阀轴在旋转时在阀座上摩擦，从而去除沉积物。

    Valve stem actuator
    2.
    发明授权
    Valve stem actuator 失效
    阀杆执行器

    公开(公告)号：US4460009A

    公开(公告)日：1984-07-17

    申请号：US415676

    申请日：1982-09-07

    申请人： James R. Nanci ,  James MacGregor

    发明人： James R. Nanci ,  James MacGregor

    IPC分类号： F16K31/163 ,  F16K31/122 ,  F16K31/54

    CPC分类号： F16K31/163 ,  Y10T137/4322 ,  Y10T137/6253 ,  Y10T74/1633 ,  Y10T74/19014

    摘要： A valve stem actuator for a slurry valve or the like includes a support frame extending from the valve body to a linear operator having a cylinder and piston. Means are provided for connecting the piston rod to the valve stem and means reciprocally mounted on the support frame rotate the valve stem with respect to the valve body independently of the linear movement of the valve stem to dislodge accumulated crust to permit the valve disc to properly seat to prevent fluid flow through the valve. The linear operator is preferably pneumatically or hydraulically actuated and the rotary actuator preferably comprises an air or hydraulically actuated rack engageable with the valve stem. The valve stem actuator is useful for new valves or for retrofit of present slurry valves or the like.

    摘要翻译： 用于浆料阀等的阀杆致动器包括从阀体延伸到具有气缸和活塞的线性操作器的支撑框架。 提供用于将活塞杆连接到阀杆的装置，并且往复安装在支撑框架上的装置相对于阀体旋转阀杆，而与阀杆的线性运动无关地移动积聚的外壳以允许阀盘适当地 以防止流体流过阀门。 线性操作器优选是气动或液压致动的，并且旋转致动器优选地包括可与阀杆接合的空气或液压致动的齿条。 阀杆致动器可用于新阀或用于改进现有浆液阀等。