SEALING UNIT OF SHUT-OFF DEVICE OF BALL VALVE Russian patent published in 2017 - IPC F16K5/20 

FIELD: machine engineering.

SUBSTANCE: sealing elements site crane: ferrule, and sealing ring are merged into a single constructive node-moving composite saddle installed in ball crane with opportunity education Chambers of its direct and reverse. Ferrule is made in the form of a bowl with ring lug on one its end and two through-hole. On the outer surface of the core a cylindrical flange with outer thread is formed, as well as a lock tool from unwinding. In the specified a cylindrical flange in the direction of the valve gate implemented evenly placed around the circle open holes with springs associated with sealing ring, movably installed in the cavity formed between the nucleus and the ferrule, and partially protruding in the open position of the crane outside the working surface of rolling composite saddles by the amount allowed by the other fronts yokes, with the possibility of the execution of the function. The sealing ring on the mount and emitting core surfaces are equipped with gaskets. Open holes of the springs are connected to the camera of forward movement. The outer surface of the core, located to a cylindrical flange, sealed with the sealing capability of the pipe relative to the space between the camera forward movement and input or output ports of the ball valve. The working surface of composite saddle rolling formed surfaces of bearing rings and cores made spherical at the Interior of their ends and split circle sealing ring.

EFFECT: increased reliability and simplified design of the invention.

4 cl, 5 dwg