Floating seal ring is a special type of mechanical seal developed to adapt to harsh working environments. They have strong anti-pollution capabilities, are wear-resistant, impact-resistant, reliable in operation, have automatic compensation for end-face wear, and feature simple structures. They are most commonly applied in engineering machinery products and are also widely used in various conveyors, reducers, and concrete equipment. Currently, in coal mining machinery, they are mainly used in the sprockets of scraper conveyors, wet brakes of mine cars, and the transmission mechanisms and arms of coal mining machines, drums, etc.
Floating seal ring usually consists of a metal ring made of alloy cast iron and a matching rubber O-ring. The floating rings of the floating seal ring is used in pairs, one rotating with the rotating component and one remaining relatively stationary.
When the floating seal ring operates, the two floating rings rely on the deformation of the O-ring after axial compression to generate compressive force on the sealing end face of the floating rings. As the sealing end face wears evenly, the stored elastic energy of the O-ring is gradually released, thereby achieving axial compensation. Within the set time, the sealing surface can maintain a good fit, thereby resisting external dust and dirt from entering the cavity while forming an internal oil seal environment.
After installation, it is generally necessary to use a depth gauge to symmetrically select 4-8 points for monitoring each post-press floating seal ring and to check the degree of twist in the rubber ring after pressing using the installation tool.
The strong oil film tension of the floating seal ring effectively prevents the leakage of the sealing medium; in terms of materials, structure, performance, and processing, the floating seal ring has been optimized for processability, making it flexible, simple in structure, and very convenient to debug.
Special care must be taken during the installation of floating seal ring to avoid damaging the precisely machined sealing contact surfaces. After installing the rubber ring, it should not be twisted or tilted excessively. In particular, do not press the floating seal ring by hand without using installation tools, as this can easily lead to large random tilts of the post-pressed floating seal ring and twisted rubber rings, causing offset wear on the floating seal ring, twisted deformation of the O-ring, etc., which can lead to early oil leakage.
Floating seal ring is typically used in machinery but is not limited to simple engineering machinery. When detailing the application fields of floating seal ring, they can specifically be applied in mining machinery, engineering machinery, heavy-duty caterpillar tracks, track vehicles, conveyor systems, mixers/agitators, shafts, agricultural machinery, etc.
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