JPH0247492U

JPH0247492U -

Info

Publication number: JPH0247492U
Application number: JP12773488U
Authority: JP
Priority date: 1988-09-28
Filing date: 1988-09-28
Publication date: 1990-03-30

Description

[Brief explanation of the drawing]

第１図は本考案第１実施例のロータリジヨイン
トを示す断面図、第２図は同要部を示す説明図、
第３図は第１図の―線断面図、第４図は第１
実施例の変形例を示す要部説明図、第５図は第２
実施例のロータリジヨイントを示す断面図である
。Ａ……ロータリジヨイント、１……軸受ケーシ
ング、２……回転軸、３……液膜シールリング、
５……回転ケーシング、６……固定軸、１４，１
５……流路、２３，２４……流路、３１，３２…
…微小隙間、３４……連通路、３６……Ｏリング
。 FIG. 1 is a sectional view showing the rotary joint of the first embodiment of the present invention, FIG. 2 is an explanatory view showing the main parts,
Figure 3 is a sectional view taken along the - line in Figure 1, and Figure 4 is a cross-sectional view of Figure 1.
A main part explanatory diagram showing a modification of the embodiment, FIG. 5 is the second
It is a sectional view showing a rotary joint of an example. A...Rotary joint, 1...Bearing casing, 2...Rotating shaft, 3...Liquid film seal ring,
5... Rotating casing, 6... Fixed shaft, 14,1
5... Channel, 23, 24... Channel, 31, 32...
...Small gap, 34...Communication path, 36...O ring.

Claims

[Claims for Utility Model Registration] (1) A flow path provided on the bearing casing side, which is the fixed side, and a flow path provided on the rotating shaft side, which is rotatably inserted into the bearing casing, are In a rotary joint configured to communicate through a sliding surface, between the sliding surfaces of the bearing casing and the rotating shaft,
A wide liquid film seal ring is interposed with a small gap for liquid film formation, and the liquid film seal ring has the required number of liquid film seal rings to constantly communicate the flow path on the bearing casing side and the flow path on the rotating shaft side. O-rings are provided on both sides of each communication path between the outer peripheral surface of the liquid film seal ring and the inner peripheral surface of the bearing casing to seal the gap formed between the two peripheral surfaces. What is claimed is: 1. A rotary joint, characterized in that the liquid film seal ring and the rotary shaft are provided with the same pressure on both ends of the open surface side of the minute gap between the liquid film seal ring and the rotating shaft. (2) In a rotary joint in which a flow path provided on the rotating casing side and a flow path provided on the fixed shaft side inserted into the rotating casing are communicated via the sliding surfaces of both, between the sliding surfaces of the rotating casing and the fixed shaft,
A wide liquid film seal ring is interposed with a small gap for liquid film formation, and the liquid film seal ring has the required number of rings to constantly communicate the flow path on the rotating casing side and the flow path on the fixed shaft side. O-rings are provided on both sides of each communication path between the outer circumferential surface of the liquid film seal ring and the inner circumferential surface of the rotating casing to seal the gap formed between the two circumferential surfaces. A rotary joint characterized in that the liquid film seal ring and the fixed shaft are provided with the same pressure on both ends of the open surface sides of the minute gap between the liquid film seal ring and the fixed shaft.