| 摘要 |
The valve consists of a housing (1), flanges (12,13), a valve a valve disc (2) and a valve shaft (3). The axis of the valve shaft undergoes successively a movement in a straight plane, then undergoes a rotary movement, then about the valve axis connected with a movement of the valve axis on a curved plane. A packing bush (6) is connected to the housing by a folding bellows (7), which forms a pressure-tight seal, and is secured against rotation. The stop bush can have two degrees of movement relative to the housing. The movement of the valve shaft is automatically controlled by the movement of a shaping body (19) in a groove (21). The drive force at the start of the opening movement perpendicularly intersects the shaft axis and is parallel to the axis.
|
