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US 2026/0235208 A1Published application
Shaft sealing device
AssigneeEagle Industry Co., Ltd.
InventorsYuta NEGISHI, Ryosuke UCHIYAMA, Gai YAMAGUCHI, Yuki MAETANI, Takahiro TSUKAMOTO, Osamu MATSUMOTO, Sayaka MIYAZAKI, Hiroki INOUE, Minori ONUMA, So MAKISHIMA
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Abstract
A shaft sealing device capable of maintaining high lubricity between sliding surfaces is provided. Communication paths communicating with an external space are connected to a drive space and a fluid in the drive space introduced between a pair of sliding surfaces by a fluid introduction mechanism is replenished from an external space through the communication paths.
Claims5
A shaft sealing device, comprising:
- a casing which has a drive space accommodating a drive unit;
- a rotating shaft which penetrates the casing and is disposed to extend from the drive space to a sealed fluid side space;
- and
- a seal assembly which is disposed between the casing and the rotating shaft, and has a pair of sliding parts rotating relatively with each other, the sliding parts having sliding surfaces sliding relatively with each other in a facing state, respectively,
- wherein at least one of the sliding surfaces is provided with a liquid introduction mechanism so that a liquid in the drive space is introduced between the sliding surfaces,
- wherein the liquid introduction mechanism has a groove formed in the at least one of the sliding surfaces,
- wherein drive space includes a seal assembly side space which is defined by the casing and the seal assembly, and
- wherein the seal side space communicates with a communication path which is configured for supplying the liquid in an external space to the seal side space.
5 more elements
Dependencies are inferred from the claim text.