JPH083770Y2 - Structure of fixed part of fixed seal ring in mechanical seal - Google Patents
Structure of fixed part of fixed seal ring in mechanical sealInfo
- Publication number
- JPH083770Y2 JPH083770Y2 JP1989092438U JP9243889U JPH083770Y2 JP H083770 Y2 JPH083770 Y2 JP H083770Y2 JP 1989092438 U JP1989092438 U JP 1989092438U JP 9243889 U JP9243889 U JP 9243889U JP H083770 Y2 JPH083770 Y2 JP H083770Y2
- Authority
- JP
- Japan
- Prior art keywords
- fixed
- ring
- seal
- annular frame
- annular
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000012856 packing Methods 0.000 claims description 16
- 238000007789 sealing Methods 0.000 claims description 15
- 239000002184 metal Substances 0.000 claims description 11
- 230000002093 peripheral effect Effects 0.000 claims description 11
- 238000004080 punching Methods 0.000 claims description 3
- 238000005266 casting Methods 0.000 description 5
- 238000003825 pressing Methods 0.000 description 5
- 238000003466 welding Methods 0.000 description 4
- 239000010410 layer Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000011247 coating layer Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000011162 core material Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
Landscapes
- Mechanical Sealing (AREA)
Description
【考案の詳細な説明】 ［考案の技術分野］ 本考案は、水中遠心ポンプ等、水中回転機器のメカニ
カルシールにおける固定密封環の固定部構造に関するも
のである。TECHNICAL FIELD OF THE INVENTION The present invention relates to a fixed portion structure of a fixed sealing ring in a mechanical seal of an underwater rotating device such as an underwater centrifugal pump.
［従来技術とその問題点］ 水中遠心ポンプ等、水中回転機器のメカニカルシール
は、従来、ハウジングが鋳物製であり、鋳造後機械加工
によりインローを形成していた。[Prior Art and its Problems] In mechanical seals for underwater rotating equipment such as submersible centrifugal pumps, conventionally, the housing is made of casting, and the spigot is formed by machining after casting.
従って、量産に不向きでコスト高となり、かつ、製品
の重量も増大し、小型軽量化の要請と相容れない憾みが
ある。Therefore, it is unsuitable for mass production, the cost becomes high, and the weight of the product increases, which is incompatible with the demand for reduction in size and weight.
従来の鋳物製ハウジングの断面形状は第５図のように
なっているが、これを金属板で作るとすれば第６図のよ
うな断面形状となり、プレス加工のみで一体成型するこ
とは困難で、溶接による部材の接合を必要とするため、
結局ローコストには生産し得ないことになる。The cross-sectional shape of a conventional casting housing is as shown in Fig. 5, but if it is made of a metal plate, it will have the cross-sectional shape as shown in Fig. 6, and it is difficult to integrally mold it only by pressing. Since it is necessary to join the members by welding,
After all, it cannot be produced at low cost.
［考案の目的］ 本考案の目的は、水中遠心ポンプ等、水中回転機器の
メカニカルシールにおいて、固定密封環を支承する金属
板製ハウジングを、溶接による部材接合を必要とせず、
プレス加工のみで容易に成型し得る構造とすることによ
り、ローコストで軽量な製品を提供せしめることにあ
る。[Object of the Invention] The object of the present invention is to provide a mechanical seal for a submersible rotating device such as a submersible centrifugal pump without requiring welding of a metal plate housing that supports a fixed sealing ring by welding.
By providing a structure that can be easily molded only by pressing, it is possible to provide a lightweight product at low cost.
［考案の構成］ 本考案に係るメカニカルシールにおける固定密封環の
固定部構造においては、板体に穿設された軸孔の孔縁部
を片側へ打出して環状枠に形成した金属板製の取付ハウ
ジングと、環状の板金を弾褥性被覆層でモールドして前
記環状枠と対向する環溝を裏側外周に凹設し表側内周に
は後記固定密封環の埋入する環溝が形成せられる緩衝パ
ッキングと、表側端面を回転密封環に対接する摺滑シー
ル面となし外周面を前記緩衝パッキングへの定着面とす
る固定密封環とからなり、固定密封環の前記定着面を緩
衝パッキングの表側環溝内に定着させて一体となし、緩
衝パッキングの裏側環溝を取付ハウジングの環状枠の表
側内周面および端縁部に圧接させ、環状枠の裏側内周面
には原動機軸軸受を嵌着させまたは回転体ボス部を嵌入
させるのである。[Construction of the Invention] In the structure of the fixed part of the fixed seal ring in the mechanical seal according to the present invention, the plate edge is made of a metal plate formed by punching the hole edge portion of the shaft hole to one side to form an annular frame. A mounting housing and an annular sheet metal are molded with an elastic covering layer to form an annular groove facing the annular frame on the outer periphery of the back side, and an annular groove for embedding a fixed sealing ring described later is formed on the inner periphery of the front side. And a fixed sealing ring whose outer peripheral surface is a fixing surface to the buffer packing, and the fixing surface of the fixed sealing ring is a fixing packing. It is fixed in the front side annular groove to be integrated, and the back side annular groove of the cushioning packing is pressed against the front side inner peripheral surface and the edge of the annular frame of the mounting housing, and the motor shaft bearing is attached to the rear side inner peripheral surface of the annular frame. Insert or insert the rotating body boss It is.
［実施例］ 実施態様を例示した図面について説明すると、１は金
属板製の取付ハウジングであって、板体に穿設された軸
孔２の孔縁部を片側へ打出して環状枠３に形成し、その
表側内周面を後記緩衝パッキング５の取付部とする。そ
して環状枠３の裏側内周面3cには、原動機軸４の軸受B1
を嵌着し、また、原動機軸４に嵌着された回転体のボス
部B2を嵌入させるのである。[Embodiment] Referring to the drawings illustrating the embodiment, reference numeral 1 denotes a mounting housing made of a metal plate, in which a hole edge portion of a shaft hole 2 formed in a plate body is punched to one side to form an annular frame 3. The inner peripheral surface on the front side is used as a mounting portion of the cushioning packing 5 described later. The bearing B 1 of the prime mover shaft 4 is provided on the inner peripheral surface 3c on the back side of the annular frame 3.
And the boss portion B 2 of the rotary body fitted to the prime mover shaft 4 is fitted.
緩衝パッキング５は、段付環状の板金5aを芯材とし
て、これをゴム或は軟質の合成樹脂からなる弾褥性被覆
層5bでモールドし、前記環状枠３と対向する環溝６を裏
側外周に凹設し、表側内周には後記固定密封環７の埋入
する環溝８が形成される。The cushioning packing 5 is formed by molding a stepped annular sheet metal 5a as a core material and molding it with an elastic covering layer 5b made of rubber or a soft synthetic resin, and an annular groove 6 facing the annular frame 3 on the back side outer periphery. A ring groove 8 in which a fixed sealing ring 7 to be described later is embedded is formed in the inner periphery of the front side.
７は、シリコンカーバイト等で作られた固定密封環で
あって、表側端面を回転密封環９に対向する摺滑シール
面7aとなし、裏側端面および外周面を前記緩衝パッキン
グ５への定着面7bとするが、前記緩衝パッキング５の塑
造時にこれと一体に結合されて、定着面7bが表側環溝８
の溝底面8aおよび溝壁面8bへ定着された状態となるので
ある。Reference numeral 7 denotes a fixed sealing ring made of silicon carbide or the like, the front end surface of which is a sliding sliding sealing surface 7a facing the rotary sealing ring 9 and the back end surface and outer peripheral surface thereof are fixing surfaces to the buffer packing 5. 7b, but when the cushioning packing 5 is integrally formed with the cushioning packing 5 when it is formed, the fixing surface 7b has a front side annular groove 8a.
It is in a state of being fixed to the groove bottom surface 8a and the groove wall surface 8b.
そして緩衝パッキング５の裏側環溝６を環状枠３の表
側外周面3aおよび端縁部3bへ圧接させることにより圧接
シール面が形成されて、取付ハウジング１と緩衝パッキ
ング５との間に水密が保持せられ、従来のメカニカルシ
ール同様に、押圧スプリング10による回転密封環９の押
圧作用と相まって、その水密保持は一層強固になる。Then, the back side annular groove 6 of the cushion packing 5 is brought into pressure contact with the front side outer peripheral surface 3a and the end edge portion 3b of the annular frame 3 to form a pressure contact sealing surface, so that watertightness is maintained between the mounting housing 1 and the cushion packing 5. Therefore, as in the conventional mechanical seal, the watertightness is further strengthened by the pressing action of the rotary seal ring 9 by the pressing spring 10.
［効果］ 本考案構造によれば、金属板製の取付ハウジング１
が、溶接による部材接合を必要とすることなく、プレス
加工のみで一体成型して得られるので、多量生産に適し
ローコストで軽量な製品を提供し得るという利点があ
る。[Effect] According to the structure of the present invention, the mounting housing 1 made of a metal plate
However, since it can be integrally formed only by pressing without the need for joining members by welding, there is an advantage that a lightweight product can be provided at low cost, which is suitable for mass production.
また、固定密封環７および緩衝パッキング５を支承す
る環状枠３が、軸孔２の孔縁部を裏側へ打出して形成せ
られ、表側へは突出していないので、軸封室内のスペー
スを有効利用できるのである。Further, the annular frame 3 for supporting the fixed sealing ring 7 and the buffer packing 5 is formed by punching out the hole edge portion of the shaft hole 2 to the back side and does not project to the front side. It is available.
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ッキングの半断面図、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
によっ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、3a
……表側内周面、3b……表側端縁部、3c……裏側内周
面、５……緩衝パッキング、5a……環状の板金、5b……
弾褥性被覆層、６……裏側環溝、７……固定密封環、7a
……摺滑シール面、7b……定着面、８……表側環溝、９
……回転密封環。FIG. 1 is a vertical sectional side view of an essential part showing an example in which the structure of the present invention is applied to a mechanical seal of a submersible centrifugal pump, FIG. 2 is a half sectional view of a mounting housing in the structure of the present invention, and FIG. 3 is a buffer in the structure of the present invention. FIG. 4 is a half cross-sectional view of the packing, FIG. 4 is a half cross-sectional view of the fixed sealing ring in the structure of the present invention, and FIG. 5 is a vertical cross-sectional side view of a main part of a submersible centrifugal pump having a mechanical seal made of a conventional casting housing structure. The figure is a vertical cross-sectional side view of an essential part showing an example in which a metal housing is used to mold the same structure as a conventional casting housing. 1 ... Mounting housing, 2 ... Shaft hole, 3 ... Annular frame, 3a
…… Front inner peripheral surface, 3b …… Front edge part, 3c …… Back inner peripheral surface, 5 …… Buffer packing, 5a …… Annular sheet metal, 5b ……
Resilient coating layer, 6 ... Back side annular groove, 7 ... Fixed sealing ring, 7a
…… Sliding slide surface, 7b …… Fixing surface, 8 …… Front side annular groove, 9
...... Rotary sealed ring.
Claims (1)
側へ打出して環状枠（３）に形成した金属板製の取付ハ
ウジング（１）と、 環状の板金（5a）を弾褥性被覆層（5b）でモールドして
前記環状枠（３）と対向する環溝（６）を裏側外周に凹
設し表側内周には後記固定密封環（７）の埋入する環溝
（８）が形成せられる緩衝パッキング（５）と、 表側端面を回転密封環（９）に対接する摺滑シール面
（7a）となし外周面を前記緩衝パッキング（５）への定
着面（7b）とする固定密封環（７）とからなり、 固定密封環（７）の前記定着面（7b）を緩衝パッキング
（５）の表側環溝（８）内に定着させて一体となし、 緩衝パッキング（５）の裏側環溝（６）を取付ハウジン
グ（１）の環状枠（３）の表側内周面（3a）および端縁
部（3b）に圧接させ、 環状枠（３）の裏側内周面（3c）には原動機軸軸受
（B1）を嵌着させまたは回転体ボス部（B2）を嵌入させ
ることを特徴とした、 メカニカルシールにおける固定密封環の固定部構造。1. A mounting housing (1) made of a metal plate, which is formed on an annular frame (3) by punching out a hole edge portion of a shaft hole (2) formed in a plate body to one side, and an annular sheet metal ( 5a) is molded with an elastic covering layer (5b) to form a ring groove (6) facing the annular frame (3) on the outer periphery of the back side, and a fixed sealing ring (7) described later is embedded on the inner periphery of the front side. The buffer packing (5) in which the ring groove (8) to be inserted is formed, and the sliding end seal surface (7a) which is in contact with the rotary sealing ring (9) at the front end surface is provided. The fixing surface (7b) is a fixed seal ring (7), and the fixing surface (7b) of the fixed seal ring (7) is fixed in the front side ring groove (8) of the buffer packing (5) to be integrated. None, the back side annular groove (6) of the cushioning packing (5) is pressed against the inner peripheral surface (3a) and the edge (3b) of the annular frame (3) of the mounting housing (1). It was characterized by causing fitted motor shaft bearings (B 1) is fitted to or rotator boss portion on the back side in the peripheral surface (3c) of the annular frame (3) and (B 2), stationary seal in mechanical seal Structure of fixed part of ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989092438U JPH083770Y2 (en) | 1989-08-04 | 1989-08-04 | Structure of fixed part of fixed seal ring in mechanical seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989092438U JPH083770Y2 (en) | 1989-08-04 | 1989-08-04 | Structure of fixed part of fixed seal ring in mechanical seal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0330668U JPH0330668U (en) | 1991-03-26 |
| JPH083770Y2 true JPH083770Y2 (en) | 1996-01-31 |
Family
ID=31641867
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989092438U Expired - Fee Related JPH083770Y2 (en) | 1989-08-04 | 1989-08-04 | Structure of fixed part of fixed seal ring in mechanical seal |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH083770Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102076941B (en) | 2008-10-01 | 2013-11-06 | 三菱重工业株式会社 | Gas turbine device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5970966U (en) * | 1982-11-01 | 1984-05-14 | 内山工業株式会社 | mechanical seal |
| JPS6221999A (en) * | 1985-07-22 | 1987-01-30 | 三井建設株式会社 | Lining structure in tunnel |
| JPS6318854U (en) * | 1986-07-22 | 1988-02-08 |
-
1989
- 1989-08-04 JP JP1989092438U patent/JPH083770Y2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0330668U (en) | 1991-03-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |