| 摘要 |
<p>In a sealing assembly for effecting a rotary seal between a stationary housing (5) and a rotary drum (1) by means of a number of arcuate sealing segments (8) engaging a radial sealing surface (6) on the housing (5) and a non-radial sealing surface (3) on the rotary drum (1), the segments being held into sealing engagement with said sealing surfaces by constantly acting means, the novel feature consists in that the non-radial surface (3) tapers conically towards the radial surface (6). With this arrangement, the radially acting means, such as a cable (15), urging the segments (8) radially inwards, also provide the requisite force for urging the segments towards the radial sealing surface (6), as the reaction force on the non-radial or conical surface (3) has a component directed towards the radial sealing surface (6). This, of course, makes the assembly simpler, more reliable in operation and less costly to produce than previous assemblies, in which the non-radial surface was cylindrical, and separate means had to be used to urge each segment into sealing engagement with the radial sealing surface.</p> |
