JPS60102495U - Rotating shaft sealing device for submersible pumps - Google Patents

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

【図面の簡単な説明】[Brief explanation of drawings]

第１図は本考案装置の要部縦断側面図、第２図は本考案
装置における固定密封環および緩衝バッキングを環溝内
から分離させた状態を示す要部縦断側面図、第３図は本
考案装置におけるリップ内周面をラビリンス状に形成し
た事例を示す要部縦断側面図、第４図の（Ａ）およびＣ
Ｂ）は従来の回転軸密封装置における固定密封環の固定
部構造を例示した要部縦断側面図、第５図は本考案とは
異なるリップの伸延状態を示した要部縦断側面図である
。 １・・・固定密封環、１ａ・・・表側端面、１ｂ・・・
裏側端面、１ｃ・・・内周面、１ｄ・・・外周面、２・
・・回転密封環、３・・・環溝、３ｂ・・・溝底面、３
ｃ・・・環溝内周面、４・・・回転軸、６・・・緩衝バ
ッキング、７・・・合成ゴム製リップ、７ｃ・・・リッ
プ内周面。Fig. 1 is a vertical sectional side view of the main part of the device of the present invention, Fig. 2 is a longitudinal sectional side view of the main part of the device of the invention showing a state in which the fixed sealing ring and the buffer backing are separated from the inside of the ring groove. FIG. 4 (A) and C are longitudinal sectional side views of main parts showing an example in which the inner peripheral surface of the lip in the devised device is formed in a labyrinth shape.
B) is a longitudinal sectional side view of a main part illustrating the structure of a fixing part of a fixed sealing ring in a conventional rotary shaft sealing device, and FIG. 1... Fixed sealing ring, 1a... Front end surface, 1b...
Back end surface, 1c...inner peripheral surface, 1d...outer peripheral surface, 2.
...Rotating sealing ring, 3...Ring groove, 3b...Groove bottom surface, 3
c...Inner circumferential surface of the ring groove, 4...Rotating shaft, 6...Buffer backing, 7...Synthetic rubber lip, 7c...Inner circumferential surface of the lip.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 表側端面１．ａを回転密封環２と対接する摺滑面となし
裏側端面１ｂを非摺滑面とする固定密封環１を、回転軸
４の外周に遊合するようシールボックス内壁等に凹設せ
られた環溝３内に収容して非摺滑面を溝底面３ｂに当接
させると共に、固定密封環１の外周面１ｄと環溝内周面
３Ｃとの間の空隙部には緩衝バッキング６を介在させ１
．かつ、固定密封環１の内周面に焼付されて回転密封環
２の方向へ伸延する合成ゴム製リップ７の内周縁７Ｃが
、回転軸４と摺接して外液流人阻止面となるよう構成せ
られた水中ポンプにおける回転軸密封装置。Front end surface 1. A stationary sealing ring 1, in which a is a sliding surface facing the rotating sealing ring 2 and a back end surface 1b is a non-sliding surface, is recessed in the inner wall of the seal box or the like so as to loosely fit around the outer periphery of the rotating shaft 4. It is accommodated in the annular groove 3 so that its non-sliding surface comes into contact with the groove bottom surface 3b, and a buffer backing 6 is interposed in the gap between the outer circumferential surface 1d of the fixed sealing ring 1 and the inner circumferential surface 3C of the annular groove. Let's do it 1
．． In addition, the inner circumferential edge 7C of the synthetic rubber lip 7, which is baked onto the inner circumferential surface of the stationary sealing ring 1 and extends in the direction of the rotating sealing ring 2, is in sliding contact with the rotating shaft 4 and serves as an external liquid flow-preventing surface. A rotating shaft sealing device in a constructed submersible pump.