JPS6345458U

JPS6345458U -

Info

Publication number: JPS6345458U
Application number: JP13790786U
Authority: JP
Priority date: 1986-09-10
Filing date: 1986-09-10
Publication date: 1988-03-26
Also published as: JPH0229320Y2

Description

[Brief explanation of the drawing]

第１図は本考案メカニカルシールの固定環構造
の第一の実施例を示すメカニカルシール要部の断
面図、第２図は同固定環部の拡大断面図、第３図
は同弾性体リングの斜視図、第４図は第二の実施
例を示す固定環部の拡大断面図、第５図は同弾性
体リングの正面図、第６図は第三の実施例を示す
弾性体リングの斜視図、第７図は従来のメカニカ
ルシール要部の断面図である。１……回転環、２……回転軸、３……機筐、４
……固定環、８……Ｖパツキン、９……ボルト、
１０……押え環、１１……弾性体リング、１２…
…スリツト、１３……圧抜き構造、１４……小孔
。 Fig. 1 is a sectional view of the main part of the mechanical seal showing the first embodiment of the fixed ring structure of the mechanical seal of the present invention, Fig. 2 is an enlarged sectional view of the fixed ring part, and Fig. 3 is an enlarged sectional view of the elastic ring. A perspective view, FIG. 4 is an enlarged sectional view of a fixed ring portion showing a second embodiment, FIG. 5 is a front view of the same elastic ring, and FIG. 6 is a perspective view of an elastic ring showing a third embodiment. 7 are cross-sectional views of the main parts of a conventional mechanical seal. 1... Rotating ring, 2... Rotating shaft, 3... Machine casing, 4
... Fixed ring, 8 ... V-packet, 9 ... Bolt,
10... Presser ring, 11... Elastic ring, 12...
...Slit, 13...Pressure relief structure, 14...Small hole.

Claims

[Scope of utility model registration request]

In the fixed ring of a mechanical seal that airtightly slides and seals the rotary ring supported on the rotating shaft side and the fixed ring supported on the rear casing side, a V-packet is installed between the inner periphery of the machine casing and the outer periphery of the fixed ring. In addition to interposing the V-packing to maintain airtightness, a pressure relief structure is formed on the outside of the V packing, consisting of slits that are continuous in the axial direction on the outer or inner periphery, or small holes that penetrate in the axial direction within the wall thickness. A presser ring is attached to press and support the elastic ring in the direction of the V-pack through an elastic ring made of rubber or the like, and extra pressure is applied to the V-pack by the elastic ring. Fixed ring structure of mechanical seal.