JPH0341268U

JPH0341268U -

Info

Publication number: JPH0341268U
Application number: JP10194589U
Authority: JP
Priority date: 1989-08-31
Filing date: 1989-08-31
Publication date: 1991-04-19

Description

[Brief explanation of drawings]

第１図は本考案に係るメカニカルシールの第１
実施例を示すシールリングの摺動面の一部側面図
、第２図は第１図−線における断面図、第３
図イ，ロは同じくシールリングの摺動面にスパイ
ラル状に形成された溝の形状例をそれぞれ示す拡
大斜視図、第４図は本考案に係る第２実施例を示
すシールリングの摺動面の一部側面図、第５図は
第４図−線における断面図、第６図は従来の
メカニカルシールの要部縦断側面図、第７図は同
じく従来のシールリングの摺動面の一部側面図、
第８図は第７図−線における断面図である。４……固定環（メイテイングリング）、６……
回転環（シールリング）、６ａ……摺動面、６１
……溝、６１ａ……内周側基点部、６１ｂ……外
周側先端部、Ｘ……回転方向。 Figure 1 shows the first mechanical seal according to the present invention.
A partial side view of the sliding surface of a seal ring showing an embodiment, FIG. 2 is a sectional view taken along the line of FIG. 1, and FIG.
Figures A and B are enlarged perspective views respectively showing examples of the shape of spiral grooves formed on the sliding surface of the seal ring, and Figure 4 is the sliding surface of the seal ring showing a second embodiment of the present invention. FIG. 5 is a cross-sectional view along the line shown in FIG. 4, FIG. 6 is a longitudinal cross-sectional side view of the main part of a conventional mechanical seal, and FIG. 7 is a part of the sliding surface of a conventional seal ring. Side view,
FIG. 8 is a sectional view taken along the line of FIG. 7. 4... Fixed ring (mating ring), 6...
Rotating ring (seal ring), 6a...Sliding surface, 61
...Groove, 61a...Inner circumference base point, 61b...Outer circumference side tip, X...Rotation direction.

Claims

[Claims for Utility Model Registration] 1. A mechanical seal in which a plurality of grooves are circumferentially formed on the sliding surface of either a stationary ring or a rotating ring to obtain a hydrodynamic effect,
A mechanical seal characterized in that the depth of each of the grooves is tapered so that it gradually becomes shallower from the base point on the inner circumferential side to the outer circumferential side. 2. The mechanical seal according to claim 1, wherein each groove is formed in a spiral shape in the circumferential direction. 3. The mechanical seal according to claim 1, wherein each groove is formed at equal intervals along the circumferential direction.