| 摘要 |
A pump assembly includes a shaft driven rotary impeller operating in a housing and adapted for pumping a stream of material-carrying liquid through a pump chamber in the housing, with an annular seal assembly operative about a portion of the impeller shaft where the shaft extends through a wall of the housing. An annular seal chamber about the annular seal is adapted for receiving impeller driven seal lubricating and cooling liquid from the stream. A vane arrangement causing a sweeping flow of the liquid moves through the seal chamber with flushing effect.
|
