SEALED METALLIC BELLOW SEALED TRANSMISSION DEVICE, IN PARTICULAR FOR SINGLE QUART ROTATION ROTATION VALVES

摘要

Device for transmitting a rotational movement, sealed, bellows of the type in which a circular translation of the end of the bellows is positively generated by an appropriate kinematics. /P P According to the invention, the device comprises a control shaft 14 and a receiver shaft 20 surrounded by a bellows 26 connected to a transfer part 32 and the two shafts are offset parallel to each other and provided with respective cranks 14a, 20a, articulated to the part of transfer 32 so as to define a deformable parallelogram system. /P P Application to the control of quarter-turn simple rotation valves through which dangerous fluids pass.