JPS63106963U

JPS63106963U -

Info

Publication number: JPS63106963U
Application number: JP20410386U
Authority: JP
Priority date: 1986-12-27
Filing date: 1986-12-27
Publication date: 1988-07-11

Description

[Brief explanation of the drawing]

第１図および第２図は、本考案に係るメカニカ
ル・シールのそれぞれ異なる２つの実施例を示す
縦断側面図、第３図ないし第５図は、いずれも、
従来公知のメカニカル・シールのいくつかの代表
例を示す縦断側面図である。４０，４０ａ…本考案に係る２つの実施例とし
てのメカニカル・シール、４１…ケーシング、４
２…カバー、４３，４３ａ…シートリング（イン
サート）、４４…回転軸、４５，４５ａ…密封端
面、４６…緩衝リング（Ｏリング）、４７…スト
ツパ（カラー）、４８…セツトビス、４９…コン
プリング、５０，５０ａ…従動リング（シールリ
ング）、５１，５１ａ…ドライブピン、５２，５
２ａ…ガイド穴、５３…軸パツキング（Ｏリング
）、５４，５４ａ…磁石、５５…インサートライ
ナー、Ａ…高圧側にある機内部分、Ｂ…低圧側に
ある機体外部、Ｔ，Ｔ_１…間隔。 FIGS. 1 and 2 are vertical sectional side views showing two different embodiments of the mechanical seal according to the present invention, and FIGS. 3 to 5 are
FIG. 2 is a longitudinal side view showing some representative examples of conventionally known mechanical seals. 40, 40a... Mechanical seal as two embodiments according to the present invention, 41... Casing, 4
2... Cover, 43, 43a... Seat ring (insert), 44... Rotating shaft, 45, 45a... Sealing end surface, 46... Buffer ring (O ring), 47... Stopper (collar), 48... Set screw, 49... Compling , 50, 50a... Driven ring (seal ring), 51, 51a... Drive pin, 52, 5
2a...Guide hole, 53...Shaft packing (O-ring), 54, 54a...Magnet, 55...Insert liner, A...Internal part on the high pressure side, B...External part of the machine on the low pressure side, T, T ₁ ...Interval.

Claims

[Claims for Utility Model Registration] (1) Stopper (collar) 47 which is a fixed ring fixed to the rotating shaft 44 by a set screw 48
and a comp ring 49 or/and driven ring (seal ring) 50, 50a connected to the stopper 47 via drive pins 51, 51a and rotated integrally with the rotating shaft 44,
Buffer ring (O ring) on machine body 41, 42 side
46, etc., so as to be slightly movable, and between the end face of the stopper 47 and the end face of the driven ring 50, 50a on the side opposite to the stopper, there is a ring substantially perpendicular to the rotation axis 44. Seat rings (inserts) 43, 43a forming pressure-sealed end surfaces 45, 45a of flat or spherical contact type;
The above-mentioned compressing ring 49 is provided with
At least one magnet 54 is attached to the stopper (collar) 47 or the insert liner 55.
, 54a, and are attached so that the two sliding surfaces constituting the sealed end surfaces 45, 45a are always brought into close contact with each other with a uniform desired pressure by the repulsive force or attractive force acting between the corresponding magnets. Mechanical
sticker. (2) The compressing ring 49, like the stopper 47,
When the compressing ring and the stopper are located on the opposite side, a repulsive force is applied between the magnets 54 and 54 respectively installed on the compression ring and the stopper. Mechanical seals listed in scope 1. (3) The insert liner 55 is
Similar to the ring 43a, regarding the sealed end surface 45a,
When the compressing ring 49 is located on the opposite side, an attractive force is applied between the magnets 54 and 54a provided on the compressing ring and the insert liner, respectively. A mechanical seal according to claim 1 of patent registration.