Seal Arrangement for non-contact sealing of anti-friction bearings

摘要

In summary, the invention relates to a seal arrangement for non-contact sealing of anti-friction bearings, in particular for sealing anti-friction bearings in conveyors, machine tools, pumps, electric motors and the like. More specifically, the invention relates to an improvement of the arrangement of non-contact fluid-collecting labyrinth seals which perform a sealing function, such that firstly no lubricating oil can escape from the anti-friction bearing side and secondly no water and contaminant can enter from the atmosphere side. The seal arrangement of the invention consists of a three-piece pre-assembled labyrinth seal, of which at least one sealing element is arranged together with the surrounding, stationary machine part and at least one sealing element is arranged on a rotatable machine part. One core advantage of this invention consists in that, if the seal arrangement according to the invention is used, a satisfactory and effective sealing result is achieved despite somewhat severe surging flooding to the sealing elements which occurs.

主权项

1. Seal arrangement for non-contact sealing of anti-friction bearings, comprising: at least one first sealing element having at least two labyrinth grooves, at least two drain grooves and at least two drain holes attached to the surrounding, stationary machine part, wherein at least one o-ring seals the contact surface of the assembly, and at least one second sealing element attached to a rotatable machine part, wherein at least one o-ring seals the contact surface of the assembly; characterized in that:
the first circumferential guiding groove (26) of the first sealing element (8) has a conical outer face (40) and a conical inner face (41), which axially faces to the first thrower nose (10) and widens toward the guiding groove ground; the first circumferential thrower nose (10) has one conical outer face (33) and one conical inner face (34), which extends axially and taperingly into the opposing first guiding groove (26); the second circumferential guiding groove (25) of the first sealing element (8) has one conical outer face (42) and one conical inner face (43), which axially faces to the second thrower nose (11) and widens toward the guiding groove ground; the second circumferential thrower nose (11) has one conical outer face (31) and one conical inner face (32), which extends axially and taperingly into the opposing second guiding groove (25).