公开(公告)号：US4449694A

公开(公告)日：1984-05-22

申请号：US360236

申请日：1982-03-22

申请人： Ralph J. Hobart ,  Robert D. Rupp ,  Paul F. Mastro

发明人： Ralph J. Hobart ,  Robert D. Rupp ,  Paul F. Mastro

IPC分类号： F16K5/06 ,  F16K5/20

CPC分类号： F16K5/0668

摘要： The present invention relates to a ball valve having a housing with an axial passage way through the housing providing fluid communication between first and second ends of the housing. A rotatable ball is arranged within the axial passageway for selectively opening and closing the axial passageway. A seal is arranged within the axial passageway near the first end of the housing such that the seal is adapted to abut a surface on the rotatable ball. A blocking member is provided for selectively preventing axial movement of the seal towards the first end and for permitting axial movement of the seal towards the surface of the rotatable ball independently of the blocking member. In a preferred embodiment, the seal is arranged on a seal carrier which has an annular groove in an outer peripheral surface. The blocking member comprises an annular retaining ring which is threadedly secured within the axial passageway at the first end of the housing and is arranged in the annular groove in the outer peripheral surface of the seal carrier. An external diameter of the annular groove in the seal carrier is less than an internal diameter of the annular retaining ring. A connecting sleeve having a flange at one end adapted to abut a radial surface of the seal carrier selectively urges the seal carrier and the seal attached thereto into tight fitting engagement with the surface of the rotatable ball when a clamping nut is secured to an outer peripheral surface of the housing and urges the flange on the connecting sleeve into engagement with the seal carrier.

摘要翻译： 球阀技术领域本发明涉及一种具有壳体的球阀，该壳体具有通过壳体的轴向通道，从而提供壳体的第一和第二端之间的流体连通。 可旋转的球布置在轴向通道内，用于选择性地打开和关闭轴向通道。 密封件布置在靠近壳体的第一端的轴向通道内，使得密封件适于抵靠在可旋转的球上的表面。 提供了阻挡构件，用于选择性地防止密封件朝向第一端的轴向移动，并且允许密封件朝着可旋转球的表面轴向移动，而与阻挡构件无关。 在优选实施例中，密封件设置在密封载体上，该密封载体在外周表面具有环形槽。 阻挡构件包括环形保持环，该环形保持环螺纹地固定在壳体的第一端处的轴向通道内并且布置在密封载体的外周表面中的环形槽中。 密封载体中的环形槽的外径小于环形保持环的内径。 连接套筒，其一端处的凸缘适于邻接密封载体的径向表面，当夹紧螺母固定到外周边时，选择性地促使密封载体和附接到其上的密封件与可旋转球的表面紧密接合 并且促使连接套筒上的凸缘与密封载体接合。