MECHANICAL SEAL WITH SHUTDOWN INTERLOCK Russian patent published in 2018 - IPC F16J15/34 

FIELD: instrument engineering.

SUBSTANCE: invention relates to a mechanical seal system comprising rotating slip ring (2) and fixed slip ring (3), which limit sealing gap (4) between each other, and rotating slip ring (2) has protrusion (20) directed inwards in the radial direction with contact surface (21), bellows element (10) for adjusting rotating slip ring (2) in the axial direction (X-X) of the mechanical seal system and interlock (5) for rotating slip ring (2), moreover, shutdown interlock (5) includes inner sleeve (6) with radially directed outward edge (60), which limits the movement of rotating slip ring (2) in the axial direction (X-X). Rotating slip ring (2) is located on the inner sleeve (6) with the possibility of free movement in the axial direction (X-X).

EFFECT: invention provides the ability to securely install the slip ring in the axial direction and use it in a contaminated environment.

11 cl, 3 dwg