Mechanical seal with barrier fluid circulation system

Details Mechanical seal with barrier fluid circulation system Mechanical seal with barrier fluid circulation system

1991-03-22

1993-06-08

Cuchlinski, Jr., William A.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277 15, 277 65, 277 18, 277 72R, 277 74, F16J 1534

Patent

active

052172341

ABSTRACT:
An improved mechanical seal is provided, wherein an annular inner flange extending from a gland plate having inlet and outlet openings is provided with a series of notches between the inlet and the outlet openings, the notches running in the direction of rotation of the shaft around which the seal is attached. The annular inner flange extends inwardly toward and close to the shaft. A series of axial notches made in the rotary sleeve of the seal, extending beneath the stationary seal assembly further increases pumping efficiency, and may be used to circulate barrier fluid without the notches in the flange. A recess in the flange at the outlet opening may used to further increase circulation efficiency.

REFERENCES:
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patent: 2534530 (1950-12-01), Perry et al.
patent: 3356378 (1967-12-01), Tracy
patent: 3746350 (1973-09-01), Mayer et al.
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patent: 3968969 (1976-07-01), Mayer et al.
patent: 4466619 (1984-08-01), Adams
patent: 4560173 (1985-12-01), Adams et al.
patent: 4586717 (1986-05-01), Sweeney
patent: 4685684 (1987-08-01), Ballard
patent: 4721311 (1988-01-01), Kakabaker

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