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News

Use of floating seal ring and rubber ring

  • Author:Alice
  • Release on:2020-10-27
The floating seal system is composed of two identical floating seal rings and two rubber rings. The actual working principle is that a pair of rubber rings form a relatively closed space with the cavity under the support of the floating seal ring, but different shafts are in contact , When rotating, the two ground surfaces of the floating seal ring are closely matched and relatively sliding. One aspect of the floating oil seal ensures good operation, while on the other hand, it effectively seals off external dust and sludge, thereby protecting the internal No leakage of lubricating grease.

A rubber ring with a circular cross section is installed at the tapered surface between the floating seal ring and the floating seal seat. Under the action of the assembly pre-tightening force, the rubber ring is deformed by axial compression in the sealing cavity formed by the floating seal seat , Play a sealing role. Including O-shaped sealing ring, V-shaped sealing ring, X-shaped sealing ring, Y-shaped sealing ring, J-shaped and L-shaped sealing ring, etc.

The tapered gap inside the floating seal ring is conducive to the lubricating oil entering the sealing surface. The lubricating oil enters the sealing gap through capillary action, centrifugal action during rotation, and the increase in internal pressure after the temperature rises in the sealed cavity, forming a very thin oil film to achieve sealing, lubrication and cooling, while avoiding double floating The rubber ring is aging and deformed and loses elasticity caused by excessive wear and heat on the contact end surface of the sealing ring. When the floating seal ring belt wears out, the elasticity of the rubber ring can also play a certain role in automatic compensation.

Floating seals are mostly used in mechanical seals, and construction machinery often works in environments with relatively large silt and dust. External silt, dust, etc. intrude into the interior from the gap between the two floating seals, and compact on the floating seal. Seal ring and rubber ring. The rubber ring will squeeze out for a long time, and the contaminants will be squeezed repeatedly to penetrate the seal and enter.