ROLL NECK SEAL OF ROLL MILL STAND Russian patent published in 2017 - IPC B21B31/07 F16J15/34 

FIELD: machine engineering.

SUBSTANCE: invention relates to the roll neck seals of the roll mill stand. The roll neck sealing device of the roll mill stand contains the first oil ring (54), disposed along the circle of the roll (40), having the first axial surface, retaining plate (30), surrounding the roll (40) and having the second axial surface in the opposite referred position relative to the first axial surface. The first seal (64), located along the circle of the roll (40) and arranged between mentioned the first axial surface of the oil ring (54), and opposite it the second axial surface of the retaining plate (30). At that the seal (64) has the first surface of axial sealing in contact with the first axial surface of the oil ring (54) and the second axial surface. The seal is provided with a cavity, located between the second axial surface of the first seal (64) and one of the axial surfaces of the oil ring (54), connecting with the seal (64) and the source of pressurized fluid medium(28), for providing the displacement of the specified first surface of the axial seal of the first seal (64) to the contact with specified first axial surface of the oil ring (54).

EFFECT: invention allows to extend the service life of the roll neck seal by reducing the frequency of seal ring replacing.

18 cl, 7 dwg