What is the main structure of the mechanical seal? Machinery Seal

What is the main structure of the mechanical seal?

2021-12-24 08:46

The main components

Moving ring, static ring, cooling device and compression spring (depending on the specific equipment)

auxiliary seal

Sealing ring (O-shaped, X-shaped, U-shaped, wedge-shaped, rectangular flexible graphite, PTFE coated rubber O-ring, etc.)

Elastic Compensation Mechanism

Spring, push ring, spring seat and key or various screws

Classification

Divided into single end face, double end face; balanced type, unbalanced type; arbitrary rotation direction, fixed rotation direction……

Principle overview

The commonly used mechanical seal structure is composed of stationary ring (static ring), rotating ring (moving ring), spring seat of elastic element, set screw, auxiliary sealing ring of rotating ring and auxiliary sealing ring of stationary ring, etc. The anti-rotation pin is fixed on the gland to prevent the stationary ring from rotating.

Rotating rings and stationary rings are often also called compensation rings or non-compensation rings according to whether they have axial compensation capabilities.