SEALING DEVICE WITH FUNCTION FOR COMPENSATING TEMPERATURE EXPANSION OF LUBRICATING LIQUID Russian patent published in 2001 - IPC

FIELD: machine parts, namely, sealing technique. SUBSTANCE: sealing device includes two contact rings of friction pair mounted in gap between stator and rotor and slit sleeve. Stator has stationary axle; rotor has outer housing. Slit sleeve has two portions with rectangular dents on one portion and with reciprocal recesses on other portion. First portion of slit sleeve is fixed on axle; second portion is mounted with possibility of axial motion and it has shoulder upon which small springs are rested. Other ends of said small springs engage with stationary contact ring of friction pair of end sealing. The last is placed inside hollow piston mounted with possibility of axial motion inside outer housing and spring-loaded towards cavity filled with lubrication liquid. Cavity in which spring is placed is communicated with working fluid. EFFECT: enhanced reliability of sealing device operating in liquid media, at variable temperature and pressure values. 5 cl, 4 dwg