JPS6046297B2 - Adjustable sliding position sealing device - Google Patents
Adjustable sliding position sealing deviceInfo
- Publication number
- JPS6046297B2 JPS6046297B2 JP53157557A JP15755778A JPS6046297B2 JP S6046297 B2 JPS6046297 B2 JP S6046297B2 JP 53157557 A JP53157557 A JP 53157557A JP 15755778 A JP15755778 A JP 15755778A JP S6046297 B2 JPS6046297 B2 JP S6046297B2
- Authority
- JP
- Japan
- Prior art keywords
- rotating shaft
- sliding tube
- housing
- sliding
- sealing device
- 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
Links
Landscapes
- Sealing With Elastic Sealing Lips (AREA)
Description
【発明の詳細な説明】
本発明は軸封技術に係る密封装置に関するもので、特
に軸封部の接触摺動位置を移動することができる密封装
置である。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a sealing device related to shaft sealing technology, and particularly to a sealing device that can move the contact sliding position of a shaft sealing part.
従来より回転軸の密封装置は回転軸または該回転軸に外
挿した軸スリーブに対しハウジングに設けたシール装置
を密接摺動せしめるようになつている。このため摺動位
置において回転軸または軸スリーブの摺動部位がシール
リップとの摩擦によつて摩耗が進行し、いわゆる「瘤せ
る」現象が生じシール効果が減退し洩れが生ずるように
なる。したがつてこの時点ではシール部材がまだ使用可
能な時でも回転軸または軸スリーブを交換しなくてはな
らず、メンテナンスにおいて不利益であるとともに特に
船舶用船尾管シール等の大型のシール装置ではメンテナ
ンスの費用が膨大になるものである。 本発明は上記の
点に鑑み回転軸または軸スリーブの寿命をシール部材よ
り長大にしメンテナンス時期を延ばす目的でなされたも
ので、回転軸または軸スリーブの摺動部位を軸方向に移
動せしめられるよう構成するとともに回転軸または軸ス
リーブが摩耗し、洩れが生じ軸封効果が減退した時、停
止中または運転中にシール部材を移動せしめ回転軸また
は軸スリーブとの摺動部位を変えて軸封効果を回復せし
めるようにしたものである。Conventionally, a sealing device for a rotating shaft has been designed such that a sealing device provided in a housing closely slides against the rotating shaft or a shaft sleeve fitted over the rotating shaft. For this reason, at the sliding position, the sliding portion of the rotating shaft or shaft sleeve progresses in wear due to friction with the seal lip, causing a so-called "bumping" phenomenon, reducing the sealing effect and causing leakage. Therefore, at this point, even if the sealing member is still usable, the rotating shaft or shaft sleeve must be replaced, which is a disadvantage in terms of maintenance, and is particularly difficult to maintain in large sealing devices such as marine stern tube seals. The cost would be enormous. In view of the above points, the present invention has been made for the purpose of extending the life of the rotating shaft or the shaft sleeve compared to the sealing member and extending the maintenance period. At the same time, when the rotating shaft or shaft sleeve wears out and leaks occur, reducing the shaft sealing effect, the sealing member can be moved during stoppage or operation to change the sliding part with the rotating shaft or shaft sleeve to improve the shaft sealing effect. It was designed to help the body recover.
また本発明の他の目的は軸封装置に制振機構を設けると
ともに回転軸の振動を吸収すると同時に追随機構を備え
軸の振れ回りに対してシール部材を追随せしめるように
なる摺動位置可調整密封装置を提供することを目的とす
る。 以下、本発明の実施例を図面にしたがつて説明す
ると、第１図は第１の実施例を示す密封装置である。Another object of the present invention is to provide a shaft sealing device with a vibration damping mechanism, absorb vibrations of the rotating shaft, and at the same time, provide a tracking mechanism so that the sliding position can be adjusted so that the sealing member follows the whirling of the shaft. The purpose is to provide a sealing device. Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a sealing device according to the first embodiment.
カップリング１ａを先端に固設した回転軸１はハウジン
グ２に対し回転自在に軸支される。当該ハウジング２の
軸孔２ａ外方には環状凹部２をが回転軸１の回りに構成
され、該外面２ｃにハウジング前盤３が、さらに該前盤
３の外面に設けられる環状押え盤１２と一緒にボルト１
３およびナット１４によつて締着せしめられる。前盤３
の軸孔３ａは押え盤１２の軸孔１２ａより大径になり、
押え盤１２の内径部１２ｂは上記ハウジング２の凹部２
ｂ底面に対向するとともに該底面にはＯリング１５を介
してベローズ１６の一端に設けられたマウントリング１
７がボルト１８により取付けられ、該ベローズ１６の他
端に連続する摺動筒１９が上記前盤３の軸孔３ａ内縁３
ｂと、該軸孔３ａに内挿嵌着したリテーナーリング２０
間に嵌挿したゴム等の弾性環状体からなるダンパー２１
を介して該軸孔３ａに対し摺動自在に密封保持してなる
。また当該摺動筒１９はベローズ１６により押え盤１２
の内径部１２ｂ方向に押圧弾性付勢されるとともに外面
１９ａを該内径部１２ｂに螺合した数個の調節ボルト４
の先端に当接してなるもので、該調節ボルト４を回すこ
とにより軸方向に摺動するようになる。さらに摺動筒１
９の軸孔１９ｂには内縁１９ｃと前面に螺合した締結リ
ング２２間にシール部材８の補強環９を有する基部８ａ
が密接内挿してなり、リップ部８ｂを回転軸１の外周に
対し摺動自在に密接外挿しバックアップスプリング１１
によつて回転軸１に密接せしめて構成される。上記構成
になる密封装置は長時間の使用により摺動部においてシ
ール部材８のリップ部８ｂと回転軸１が摩耗するが、特
に回転軸１の方の摩耗が早く摩耗部ａが生じシール部内
に封入したオイル，等が洩れるようになるが、この場合
は調節ボルト４を回動し螺合作用により進退せしめ摺動
筒１９をベローズ１６の弾性によつて該調節ボルト４の
移動にしたがつて軸方向に移動するものであり、シール
部材８のリップ部８ｂは回転軸１との新た．な摺動面を
もつて軸封効果が回復せしめられる。A rotating shaft 1 having a coupling 1a fixed to its tip is rotatably supported by a housing 2. An annular recess 2 is formed around the rotating shaft 1 on the outside of the shaft hole 2a of the housing 2, a housing front plate 3 is provided on the outer surface 2c, and an annular presser plate 12 is provided on the outer surface of the front plate 3. together bolt 1
3 and nuts 14. Front panel 3
The shaft hole 3a has a larger diameter than the shaft hole 12a of the presser plate 12,
The inner diameter portion 12b of the presser plate 12 fits into the recess 2 of the housing 2.
b A mount ring 1 facing the bottom surface and provided at one end of the bellows 16 via an O-ring 15 on the bottom surface.
7 is attached with a bolt 18, and a sliding tube 19 continuous to the other end of the bellows 16 is attached to the inner edge 3 of the shaft hole 3a of the front plate 3.
b, and a retainer ring 20 inserted and fitted into the shaft hole 3a.
Damper 21 consisting of an elastic annular body such as rubber inserted between
It is slidably and hermetically held in the shaft hole 3a via the shaft hole 3a. In addition, the sliding tube 19 is connected to the holding plate 12 by the bellows 16.
Several adjusting bolts 4 are elastically biased toward the inner diameter portion 12b and have their outer surfaces 19a screwed to the inner diameter portion 12b.
It comes into contact with the tip of the adjusting bolt 4, and can be slid in the axial direction by turning the adjusting bolt 4. Furthermore, sliding tube 1
The shaft hole 19b of 9 has a base 8a having a reinforcing ring 9 of the seal member 8 between the inner edge 19c and the fastening ring 22 screwed onto the front surface.
is closely inserted, and the lip portion 8b is slidably and closely inserted around the outer periphery of the rotating shaft 1 to form a backup spring 11.
The rotary shaft 1 is configured to be brought into close contact with the rotating shaft 1. In the sealing device configured as described above, the lip portion 8b of the seal member 8 and the rotating shaft 1 are worn out in the sliding portion due to long-term use, but the rotating shaft 1 wears out particularly quickly, forming a worn portion a and causing damage inside the sealing portion. The sealed oil, etc. will leak out, but in this case, rotate the adjusting bolt 4 and move it forward and backward by the screwing action, and the elasticity of the bellows 16 causes the sliding tube 19 to move according to the movement of the adjusting bolt 4. The lip portion 8b of the seal member 8 is moved in the axial direction, and the lip portion 8b of the seal member 8 is connected to the rotating shaft 1. The shaft sealing effect is restored by having a smooth sliding surface.
また当該機構によれは摺動筒１９が前盤３の軸孔３ａに
対してダンパー２１を介して浮動状態に支承されている
ため、たとえば回転軸１の軸周が同心でない場合でもシ
ール部材８のリップ部８ｂは．常時回転軸１の軸周に密
接して摺動し、同時に回転軸１の振動をハウジング２側
に伝播しない制振機構になるものである。つぎに第２図
は第２の実施例を示すもので、たとえばゴムまたは合成
樹脂等の充分な弾性を得られないベローズ１６″の場合
を示すもので、該ベローズ１６″の両端に設けたマウン
トリング１７と摺動筒１９間にコイルスプリング２３を
介在せしめ、該コイルスプリング２３の弾性により摺動
筒１９を調節ボルト４方向に弾性付勢したものである。In addition, in this mechanism, the sliding tube 19 is supported in a floating state with respect to the shaft hole 3a of the front panel 3 via the damper 21, so even if the periphery of the rotating shaft 1 is not concentric, the seal member 8 The lip portion 8b is . This serves as a vibration damping mechanism that constantly slides closely around the circumference of the rotating shaft 1 and at the same time prevents the vibrations of the rotating shaft 1 from propagating to the housing 2 side. Next, FIG. 2 shows a second embodiment, in which a bellows 16'' made of rubber or synthetic resin cannot obtain sufficient elasticity, and mounts provided at both ends of the bellows 16'' are shown. A coil spring 23 is interposed between the ring 17 and the sliding tube 19, and the elasticity of the coil spring 23 elastically urges the sliding tube 19 in the direction of the adjustment bolt 4.
さらに第３図は第３の実施例を示すもので、前記第１お
よび第２の実施例のハウジング２凹部２ｂの内縁に軸孔
２ａに連続する円筒部２ｄを構成ノするとともに摺動筒
１９の内側に延長した円筒部１９ｄをＯリング２４を介
して摺動自在かつ気密的に外挿するとともに凹部２ｂ底
部と円筒部１９ｄ端面間にコイルスプリング２３″を介
挿し、摺動筒１９を調節ボルト４方向に弾性付勢してな
るもので前記各実施例と同様の効果を奏するようになる
。Further, FIG. 3 shows a third embodiment, in which a cylindrical portion 2d continuous to the shaft hole 2a is formed on the inner edge of the recessed portion 2b of the housing 2 of the first and second embodiments, and a sliding tube 19 is formed. The sliding tube 19 is adjusted by inserting the cylindrical portion 19d extending inward through the O-ring 24 in a slidable and airtight manner, and inserting a coil spring 23'' between the bottom of the recess 2b and the end face of the cylindrical portion 19d. Since the bolt is elastically biased in four directions, the same effect as in each of the above-mentioned embodiments can be achieved.
以上、説明したごとく本発明はシール部材の回転軸に対
する摺動位置を変えることにより軸封効果を回復せしめ
るものてあり、装置の寿命を長大にすることができると
ともに操作が極めて簡単てあるためメンテナンスが容易
になるものである。As explained above, the present invention restores the shaft sealing effect by changing the sliding position of the sealing member with respect to the rotating shaft, and the life of the device can be extended, and the operation is extremely simple, making it easy to maintain. This makes it easier.
またハウジングに対して密封部を浮上せしめるようにな
るため回転軸の振動が密封装置を介して伝播されなくな
り、静粛な装置を構成することができる等極めて有用な
発明てある。Furthermore, since the sealing portion is made to float relative to the housing, vibrations of the rotating shaft are no longer propagated through the sealing device, making it possible to construct a quiet device, which is an extremely useful invention.
第１図は本発明の第１実施例に係る摺動位置可調整密封
装置の要部断面図、第２図は同第２実施例に係る要部断
面図、第３図は同第３実施例に係る要部断面図である。FIG. 1 is a cross-sectional view of a main part of a sliding position adjustable sealing device according to a first embodiment of the present invention, FIG. 2 is a cross-sectional view of a main part of a second embodiment of the same, and FIG. 3 is a third embodiment of the same. FIG. 2 is a sectional view of a main part according to an example.
Claims (1)
転軸に対して密接摺動するシール部材を内挿支持した摺
動筒を、前記ハウジングに対して気密的かつ軸方向に摺
動自在にゴム等の弾性環状体からなるダンパーを介して
嵌挿し、該摺動筒の後端側に該摺動筒を前端方向へ向け
押圧弾性付勢するベローズまたはコイルスプリング等の
弾性手段を配し、さらに該摺動筒の前端側に前記ハウジ
ングに固着した環状押え盤の内径部を延設し、該内径部
に貫挿螺合した数個の調節ボルトの先端を前記摺動筒の
外面に当接して前記回転軸に対する前記摺動筒の外挿位
置を調節規制することを特徴とする摺動位置可調節密封
装置。1. A sliding tube, in which a sealing member that slides closely against the rotating shaft is inserted and supported in an annular recess formed on the inner periphery of the shaft hole of the housing, is slidable airtightly and axially relative to the housing. A damper made of an elastic annular body made of rubber or the like is inserted into the housing, and an elastic means such as a bellows or a coil spring is arranged on the rear end side of the sliding tube to elastically bias the sliding tube toward the front end. Furthermore, the inner diameter part of an annular presser plate fixed to the housing is extended to the front end side of the sliding tube, and the tips of several adjustment bolts that are inserted through and screwed into the inner diameter part are attached to the outer surface of the sliding tube. A sliding position adjustable sealing device, characterized in that the sliding position adjustable sealing device adjusts and regulates the external position of the sliding tube with respect to the rotating shaft by contacting the rotating shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP53157557A JPS6046297B2 (en) | 1978-12-22 | 1978-12-22 | Adjustable sliding position sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP53157557A JPS6046297B2 (en) | 1978-12-22 | 1978-12-22 | Adjustable sliding position sealing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5586959A JPS5586959A (en) | 1980-07-01 |
| JPS6046297B2 true JPS6046297B2 (en) | 1985-10-15 |
Family
ID=15652278
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP53157557A Expired JPS6046297B2 (en) | 1978-12-22 | 1978-12-22 | Adjustable sliding position sealing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6046297B2 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57117437U (en) * | 1981-01-16 | 1982-07-21 | ||
| JPS6369857U (en) * | 1986-10-28 | 1988-05-11 | ||
| JPH032965U (en) * | 1989-05-31 | 1991-01-11 | ||
| FR2742837B1 (en) * | 1995-12-21 | 1998-02-20 | Eurocopter France | SEALING DEVICE FOR A ROTATING SHAFT |
| CN102918399B (en) | 2011-05-31 | 2014-11-12 | 株式会社东芝 | Automatic analytical device |
| JP6513558B2 (en) * | 2015-11-12 | 2019-05-15 | 三菱電線工業株式会社 | Sealed structure |
-
1978
- 1978-12-22 JP JP53157557A patent/JPS6046297B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5586959A (en) | 1980-07-01 |
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