| 摘要 |
<p>The invention relates to a fluid-activated adjustment and manoeuvre device, especially one working as a valve for a pressurised medium, including a space arranged in a housing (1) in which is arranged an axially displaceable, moveable piston (5) that demarcates the space in a first and a second chamber (14, 19), an inlet respective outlet (2, 3) for a pressurised medium arranged at the space whereby at least one screw-like running groove (18) is rotatable relative to a centre axis (X) running through the housing and arranged to establish communication for the fluid medium between the said chambers and the respective inlet and outlet. To achieve a simplified adjustment and manoeuvre device, the piston device (5) is firmly attached to housing (1) so that is can rotate and a channel (21, 22, 23) extends through the piston device to communicate with the inlet respective outlet (2, 3) of the housing, whereby communication is established through associated interactions between the channel and the screw-like groove (18) during the rotation of the groove in an alternating manner with the inlet respective outlet (2, 3) and the chamber (14) in the space that is separated from the chamber (19) to which the inlet (2) is connected.</p> |
