| 摘要 |
<p>An improved slurry pump sealing system that employs a mechanical seal assemb ly fixed for axial movement with a bearing housing that moves axially to adjust pump impeller clearance. The relative relationship between the seal components remains unchanged regardless of the axial position of the shaft, impeller, and bearing housing. A contraction assembly with interconnecting members contracts to accommodate the reduction of the distan ce between the pump casing and shaft bearing housing on adjustment of pump impeller-to-casi ng clearance. In one embodiment the contraction assembly is a telescoping arrangement. In oth er embodiments, bellows are employed.</p> |
