JPH0448468U

JPH0448468U -

Info

Publication number: JPH0448468U
Application number: JP1990089582U
Authority: JP
Priority date: 1990-08-28
Filing date: 1990-08-28
Publication date: 1992-04-24

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例を示す半断面図、第
２図は同実施例のメイテイングリングの構成を示
す側面図、第３図は従来のガスシールを示す半断
面図、第４図、第５図は従来のメイテイングリン
グの構成を示す側面図である。符号の説明、１……回転軸、２……ハウジング
、４……メイテイングリング（第一シールリング
）、１１……シールリング（第二シールリング）
、１６，１７……密封端面、１８……半径方向溝
、１９……スパイラル溝。 Fig. 1 is a half-sectional view showing an embodiment of the present invention, Fig. 2 is a side view showing the configuration of a mating ring of the same embodiment, Fig. 3 is a half-sectional view showing a conventional gas seal, and Fig. 4 is a half-sectional view showing an embodiment of the present invention. 5 are side views showing the structure of a conventional mating ring. Explanation of symbols, 1... Rotating shaft, 2... Housing, 4... Mating ring (first seal ring), 11... Seal ring (second seal ring)
, 16, 17... sealed end surface, 18... radial groove, 19... spiral groove.

Claims

[Scope of Claim for Utility Model Registration] In a gas seal comprising a first seal ring attached to a rotating shaft and a second seal ring attached to a housing, the sealing end surfaces of both seal rings are slidably in contact with each other. , A gas seal characterized in that a radial groove for generating dynamic pressure between the sealed end surfaces and a spiral groove inclined in the rotational direction of the rotating shaft are provided on one or both of the sealed end surfaces of the two seal rings. .