JPH0330667U

JPH0330667U -

Info

Publication number: JPH0330667U
Application number: JP9243789U
Authority: JP
Priority date: 1989-08-04
Filing date: 1989-08-04
Publication date: 1991-03-26
Anticipated expiration: 2004-08-04
Also published as: JPH083769Y2

Description

[Brief explanation of drawings]

第１図は本考案構造を水中遠心ポンプのメカニ
カルシールに適用した事例を示す要部縦断側面図
、第２図は本考案構造における取付ハウジングの
半断面図、第３図は本考案構造における緩衝パツ
キングの半断面図、第４図は本考案構造における
固定密封環の半断面図、第５図は従来の鋳物製ハ
ウジング構造によるメカニカルシールを備えた水
中遠心ポンプの要部縦断側面図、第６図は金属板
によつて従来の鋳物製ハウジングと均等構造に成
型した事例を示す要部縦断側面図である。１……取付ハウジング、２……軸孔、３……環
状枠、５……緩衝パツキング、６……圧接シール
面、７……固定密封環、７ａ……摺滑シール面、
７ｂ……定着面、８……環溝、８ａ……溝底面、
８ｂ……溝壁面、９……回転密封環。 Fig. 1 is a vertical sectional side view of the main parts showing an example of applying the inventive structure to a mechanical seal of a submersible centrifugal pump, Fig. 2 is a half-sectional view of the mounting housing in the inventive structure, and Fig. 3 is a buffer in the inventive structure. FIG. 4 is a half-sectional view of the fixed sealing ring in the structure of the present invention; FIG. 5 is a longitudinal sectional side view of the main parts of a submersible centrifugal pump equipped with a mechanical seal using a conventional cast housing structure; The figure is a longitudinal sectional side view of the main part showing an example of a metal plate molded to have a structure equivalent to that of a conventional cast housing. DESCRIPTION OF SYMBOLS 1... Mounting housing, 2... Shaft hole, 3... Annular frame, 5... Buffer packing, 6... Pressure sealing surface, 7... Fixed sealing ring, 7a... Sliding sealing surface,
7b... Fixing surface, 8... Annular groove, 8a... Groove bottom surface,
8b...Groove wall surface, 9...Rotating sealing ring.

Claims

[Scope of Claim for Utility Model Registration] A mounting housing 1 made of a metal plate formed into an annular frame 3 by punching out the hole edge of a shaft hole 2 drilled in a plate body to the front side, and an inner peripheral surface and a rear end surface. A buffer packing 5 has a pressure sealing surface 6 for the annular frame 3 and an annular groove 8 in which a fixed sealing ring 7 to be described later is embedded is formed on the front side, and a sliding sealing surface whose front end surface is in contact with the rotary sealing ring 9. 7a, the back end surface and the inner peripheral surface are connected to the annular groove 8.
The fixing surface 7b of the fixed sealing ring 7 is the groove bottom surface 8 of the ring groove 8.
a and the groove wall surface 8b and are integrally combined with the buffer packing 5, and the pressure sealing surface 6 of the buffer packing 5 is attached to the annular frame 3.
A fixed part structure of a fixed sealing ring in a mechanical seal, which is characterized by being pressed against the outer peripheral surface and around the root of the mechanical seal.