Slurry pump double mechanical split face seal
OwnerJohn C. Copesinventor
Life of this patent
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Abstract
A double mechanical split seal for easy repair or replacement and with low leakage in hard duty slurry service including two pairs of seal ring assemblies - one stationary and the other rotating - urged together about a shaft by a biasing spring, a drive for the rotating pair, a housing assembly for the seal ring assemblies having fluid pressurizing apparatus so that the tapered seal ring inserts are urged into sealing relation.
Claims12
A split mechanical seal for a working shaft which comprises, in combination, an inner and an outer pair of ring inserts disposed about said shaft, one of each pair being stationary and the other being rotatable with said shaft with one of said rotatable seal inserts facing in sealing relation one of said stationary inserts, a pair of stationary and a pair of rotatable seal insert holders associated respectively with said pair of stationary and said pair of rotatable inserts and each insert holder having longitudinally and outwardly tapered recess for engagement with each of said inserts, said rotatable seal insert holders being juxtaposed in back-to-back relationships and urged apart by a biasing means.
Dependencies are inferred from the claim text.