Sealing system for slurry pump

Details Sealing system for slurry pump Sealing system for slurry pump

2005-08-17

2008-10-21

Kershteyn, Igor (Department: 3745)

Rotary kinetic fluid motors or pumps

Including casing part selectively movable relative to fixed...

C415S230000, C415S231000

Reexamination Certificate

active

07438519

ABSTRACT:
An improved slurry pump sealing system that employs a mechanical seal assembly 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 distance between the pump casing and shaft bearing housing on adjustment of pump impeller-to-casing clearance. In one embodiment the contraction assembly is a telescoping arrangement. In other embodiments, bellows are employed.

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Illustration—TRL Series ASH Pump for Minerals Slurry.
Illustration—Typical Mineral Slurries Stuffing Box.
Illustration—API Plan—32 & Plan—54 for double seal.
Examiner's Report on Invention Patent Application, Chilean Patent Application No. 2231-05, Dated Aug. 31, 2005, referring to cited references.

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