Mechanical seal arrangement with improved cooling characteristics

Abstract

The invention relates to a mechanical seal arrangement comprising a first mechanical seal () having a first rotating sliding ring () and a first stationary sliding ring () defining a first sealing gap () therebetween, a second mechanical seal () having a second rotating sliding ring () and a second stationary sliding ring () defining a second sealing gap () therebetween, a housing () having an inlet () and an outlet () for a cooling liquid, a rotating conveying sleeve () joined to the first rotating sliding ring () and the second rotating sliding ring (), the conveying sleeve () having a plurality of conveying grooves () on its outer circumference wherein the first stationary sliding ring () is arranged radially outside the conveying sleeve () and has an inner circumference () which is arranged eccentrically with respect to an outer circumference () of the conveying sleeve () so that a circumferential eccentric gap () is formed between the outer circumference () of the conveying sleeve () and the inner circumference () of the first stationary sliding ring () and wherein the first stationary sliding ring (), on a rear side () facing away from the first sealing gap (), has a first slot () directed towards the outlet () and a first widening recess () on the inner circumference (), which recess opens into the first slot ().