JPS614066U

JPS614066U - mechanical seal

Info

Publication number: JPS614066U
Application number: JP8869084U
Authority: JP
Inventors: 寿夫福井
Original assignee: 日本ピラ−工業株式会社
Priority date: 1984-06-14
Filing date: 1984-06-14
Publication date: 1986-01-11

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

第１図〜第３図は本考案に係るメカニカルシールの一実
施例を示したもので、第１図はメカニカルシールの半截
ｔ．ｔｔｐ側面図、第２図はスリーブを分解した状態を
示す縦断面図、第３図はスリーブ分割部分の平面図であ
り、第４図は他の実施例を示す第２図同様の縦断側面図
であり、第５図〜第７図は従来例を示したもので、第５
図はメカニカルシール半截縦断側面図、第６図は第５図
の要部を取出して示す作用説明図、第７図は経過時間に
対する器内温度及び漏洩量の変化を示すグラフである。１１・・・回転軸、１２・・・スリーブ、１３・・・リ
テーナ、１４・・・回転密封環、１５・・・静止密封環
、１６・・・環状空間、２２・・・スリーブ本体部分、
２２ａ・・・嵌合固定部、２３，２４．２５・・・スリ
ーブ分割部分、２３ａ，２４ａ，２
５ａ・・・断熱材層、２３ｂ，２４ｂ，２５ｂ・・・
係合保持部材、２６・・・断熱材層、２７・・・断熱シ
ール部材。1 to 3 show an embodiment of a mechanical seal according to the present invention, and FIG. 1 shows a half-cut t. ttp side view, FIG. 2 is a vertical sectional view showing the sleeve in an exploded state, FIG. 3 is a plan view of the sleeve divided portion, and FIG. 4 is a vertical sectional side view similar to FIG. 2 showing another embodiment. 5 to 7 show conventional examples.
The figure is a half-cut vertical side view of the mechanical seal, FIG. 6 is an explanatory view showing the main parts of FIG. 5, and FIG. 7 is a graph showing changes in internal temperature and leakage amount with respect to elapsed time. DESCRIPTION OF SYMBOLS 11... Rotating shaft, 12... Sleeve, 13... Retainer, 14... Rotating sealing ring, 15... Stationary sealing ring, 16... Annular space, 22... Sleeve body part,
22a... Fitting fixing part, 23, 24.25... Sleeve division part, 2 3 a, 2 4 a, 2
5 a...insulating material layer, 23b, 24b, 25b...
Engagement holding member, 26... heat insulating material layer, 27... heat insulating sealing member.

Claims

[Scope of utility model registration request]

In a mechanical seal in which a retainer for fixedly holding a rotary sealing ring is integrally formed with a sleeve inserted and fixed to a rotating shaft, the sleeve number has a fitting fixing part formed at one end to be fitted and fixed to the rotating shaft. , a heat insulating layer is formed on the inner peripheral surface of the portion excluding the fitting and fixing portion, and the inner diameter of the portion is made larger than the outer diameter of the rotating shaft to secure an annular space between the heat insulating material layer and the rotating shaft. As a matter of course, the sleeve is divided at a portion closer to the other end than the retainer forming portion, and the sleeve main portion around the retainer and these divided sleeve portions are fitted so that the sleeve portion is externally fitted onto the sleeve main portion. What is claimed is: 1. A mechanical seal characterized in that the mechanical seal is configured to be concentrically connected via a retaining member and a heat insulating seal member that are engaged and held together.