초록 ▼

A single or multiple stage mechanical seal assembly in which one seal ring is resiliently coupled to a rotatable shaft and the other seal ring is resiliently urged toward the first seal ring by axially-arranged identical springs received in spring pockets in a spring retainer, some pockets opening a

A single or multiple stage mechanical seal assembly in which one seal ring is resiliently coupled to a rotatable shaft and the other seal ring is resiliently urged toward the first seal ring by axially-arranged identical springs received in spring pockets in a spring retainer, some pockets opening at one radial surface of the retainer and others opening at the other radial surface of the retainer. The outer surfaces of the seal rings are protected against deflection by being encircled by cylindrical members and one seal ring is resiliently coupled to its encircling cylindrical member. A balance sleeve means partly supports the axially movable seal ring and is capable of angular adjustment to compensate for shaft misalignment.

대표청구항 ▼

A mechanical seal assembly for separating a high pressure fluid and a lower pressure fluid, and associated with a rotatable shaft and a stationary housing, said assembly comprising: a rotatable seal ring connected to said shaft; a non-rotatable seal ring connected to said housing for limited axial m

A mechanical seal assembly for separating a high pressure fluid and a lower pressure fluid, and associated with a rotatable shaft and a stationary housing, said assembly comprising: a rotatable seal ring connected to said shaft; a non-rotatable seal ring connected to said housing for limited axial movement; a plurality of coil springs; a ring-like spring holder having front and rear surfaces; a plurality of spring pockets in said holder, some of which open to said front surface and some of which open to said rear surface; and means in said housing supporting said spring holder relative to said non-rotatable seal ring so that said springs resiliently urge said non-rotatable seal ring axially toward said rotatable seal ring.