JP4116298B2 - mechanical seal - Google Patents

mechanical seal Download PDF

Info

Publication number
JP4116298B2
JP4116298B2 JP2002019809A JP2002019809A JP4116298B2 JP 4116298 B2 JP4116298 B2 JP 4116298B2 JP 2002019809 A JP2002019809 A JP 2002019809A JP 2002019809 A JP2002019809 A JP 2002019809A JP 4116298 B2 JP4116298 B2 JP 4116298B2
Authority
JP
Japan
Prior art keywords
seal
annular
section
pair
elastic
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
Application number
JP2002019809A
Other languages
Japanese (ja)
Other versions
JP2003222247A (en
Inventor
則男 福嶋
淑也 福家
哲也 住吉
Original Assignee
新キャタピラー三菱株式会社
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 新キャタピラー三菱株式会社 filed Critical 新キャタピラー三菱株式会社
Priority to JP2002019809A priority Critical patent/JP4116298B2/en
Publication of JP2003222247A publication Critical patent/JP2003222247A/en
Application granted granted Critical
Publication of JP4116298B2 publication Critical patent/JP4116298B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Landscapes

  • Mechanical Sealing (AREA)

Description

【0001】
【発明の属する技術分野】
本発明は、建設機械、産業機械などの回転部分に用いられるメカニカルシールに関する。
【0002】
【従来の技術】
例えば油圧ショベルのごとき履帯式走行体を備える建設機械のトラックローラ、アイドラ、スプロケットなど、あるいはベルトコンベアのごとき産業機械のガイドリングなど、土砂など異物の多い環境の中で稼働する装置の回転部分には、回転部と固定部との間を通して外部から異物が内部の回転摺動部に侵入しないように、また内部の潤滑油が外部に漏れないように、さらに回転部と固定部との間に発生する回転軸線方向の変動に対応することができるように、メカニカルシールが備えられている。このメカニカルシールは、対向して摺接する環状のシール面を有した一対のシールリングを例えば金属により形成し、これを一対の環状の弾性シールによって回転部と固定部との間に挟圧浮動保持することにより、異物、変動などに対応できるようになっている。
【0003】
メカニカルシールの典型例が特開平9−60733号公報に開示されている。このメカニカルシールは図4(同公報の図1に相当する図)に示すごとく、一対のシールリング32、32と、それを挟圧浮動保持する一対の弾性シールであるOリングシール34、34を備えている。同公報に開示された技術においてはさらに、外部から環状Oリングシール34の半径方向外側の空間Sに侵入した土砂、泥水などの異物により、Oリングシール34の装着位置が移動しないように、Oリングシール34を着座させる環状凹部33が、内側のシールリング32及び外側のシール取付部材の各々に備えられている。
【0004】
【発明が解決しようとする課題】
上述したとおりの形態の従来のメカニカルシールには、改善が望まれている次のとおりの解決すべき問題がある。
【0005】
すなわち、図4に示す一対のOリングシール34、34の外側の環状の空間Sに侵入した土砂、泥水などの異物は、時間の経過とともに締め固められ堆積し、また凍結解凍により膨張収縮を繰り返し、その結果Oリングシール34を内方の潤滑油封入室Lの方向に押し込み、また異物を潤滑油封入室Lに侵入させ、メカニカルシールにシール性不具合を生じさせる。
【0006】
本発明は上記事実に鑑みてなされたもので、その技術的課題は、メカニカルシールの外周部の空間への外部からの土砂、泥水などの異物の侵入、堆積を最小限にし、シール性に不具合を生じさせることがないようにした、メカニカルシールを提供することである。
【0007】
【課題を解決するための手段】
本発明においては、上記技術的課題を解決するメカニカルシールとして、対向して摺接する環状のシール面を有した一対のシールリングと、このシールリングを相対回転を自在に配設された一対のシール取付部材の間に挟圧し保持する、シールリングの各々とシール取付部材の各々との間に介在された一対の環状の弾性シールとを備え、該弾性シールは矩形状の断面を備え、該シールリングは該矩形状断面の内径部と嵌合する断面L状の円筒壁及び直交壁を有する外周溝を備え、該シール取付部材は該矩形状断面の外径部と嵌合する断面L状の円筒壁及び直交壁を有する内周溝を備え、該シールリングの外周、及びその外方において対向した一対の該シール取付部材、並びに一対の該弾性シールによって形成される矩形状断面の環状の空間に配設された矩形状断面の環状部材を備えている、ことを特徴とするメカニカルシールが提供される。
【0008】
そして、土砂、泥水などの異物の侵入する空間に、環状部材を配設することにより、異物の堆積する空間を最小限にし、異物の堆積を減らし、メカニカルシールのシール性不具合となる要因を除くようにする。
【0009】
好適実施形態においては、該環状部材は、該一対の弾性シールの各々又はいずれか一方に一体的に備えられている
【0010】
【発明の実施の形態】
以下、本発明に従って構成されたメカニカルシールについて、好適実施形態を図示している添付図面を参照して、さらに詳細に説明する。
【0011】
図1を参照して説明すると、全体を番号2で示すメカニカルシールは、対向して摺接する環状のシール面Fを有した一対のシールリング4、4と、このシールリング4を相対回転を自在に配設された一対のシール取付部材6、7の間に挟圧し保持する、シールリング4、4並びにシール取付部材6、7それぞれの間に介在された一対の環状の弾性シール8、8と、シールリング4、4の外周及びその外方において対向したシール取付部材6、7並びに弾性シール8、8によって形成される環状の空間Sに配設され、弾性シール8、8各々に一体的に設けられた環状部材10、10とを備えている。
【0012】
このメカニカルシール2は、軸12に固定された一方のシール取付部材6と軸12に回転自在に取付けられたシール取付部材7との間に、シール取付部材7の回転部を潤滑するための潤滑油封入室Lを維持している。メカニカルシール2のシールリング4、4、弾性シール8、8、並びに環状部材10、10は、図1から明らかなように、回転軸線13の方向においてシール面Fに関し対称である。そしてそれぞれ同一のものが対称に取付けられている。
【0013】
シールリング4は、回転軸線13の軸線方向と半径方向外方とに延びるL状の断面を有し、耐摩耗高強度の特殊合金鋳鉄などによって形成されている。断面Lの二辺の内側には、後に述べる弾性シール8の矩形状断面の内径部と嵌合する、円筒壁4a及びこの円筒壁4aから半径方向外方に延びる直交壁4bを有する断面L状の外周溝4cが形成されている。直交壁4bの裏面にはその半径方向に延びる面の外周側に、上述のシール面Fが環状に、そして鏡面に仕上げられ形成されている。
【0014】
シール取付部材6は、円筒部6aと、この円筒部6aから半径方向外方に延びたL状の環状部6bとを有している。円筒部6aは軸12に嵌合され、一端部が軸12に貫通ピン14により固定され、他端部は一対のシールリング4、4の内径部分を貫通して延びている。環状部6bの外周面6cは実質上真円に形成され、他方のシール取付部材7の内周面7aの内側に間隔をおいて位置付けられている。環状部6bには、弾性シール8の矩形状断面の外径部と嵌合する円筒壁6d及びこの円筒壁6dから半径方向内方に延びる直交壁6eを有する断面L状の内周溝6fが形成されている。軸12と円筒部6aとの嵌合部には円筒部6aの内周に形成された環状溝にOリングシール16が取付けられている。
【0015】
他方のシール取付部材7は、軸12にスリーブ軸受18を介して回転自在に支持されている。対向したシール取付部材6側の端部には、シール取付部材6の環状部6bの外周面の外側に位置付けられた上述の内周面7aと、内周面7aよりも小径で、シール取付部材6の内周溝6fと実質的に同一形状で対向して形成された、弾性シール8の矩形状断面の外径部と嵌合する円筒壁7b及びこの円筒壁7bから半径方向内方に延びる直交壁7cを有する断面L状の内周溝7dが形成されている。
【0016】
弾性シール8は、矩形状の断面を備え、耐油性合成ゴムのごとき弾性材料によって成形されている。矩形状断面の内径部は、上述のシールリング4の外周溝4cに、また外径部はシール取付部材6の内周溝6f、シール取付部材7の内周溝7dにそれぞれ圧縮されて嵌合されている。弾性シール8はまた、シール取付部材6の直交壁6e、シール取付部材7の直交壁7cと当接する部分に環状のリップ部8aを備えている。
【0017】
前述の環状の空間Sは、シールリング4、4の外周、その外方において対向するシール取付部材6、7、並びに弾性シール8、8によって規定されている。
【0018】
環状部材10は、弾性シール8に環状の空間Sに突出して一体的に備えられている。環状部材10は矩形状断面を成し、弾性シール8と同一の材料で一体に成形され、あるいは同一の材料によって別体に形成され一体的に接着されている。環状部材10は、空間Sにおいて他方の弾性シール8に備えられた環状部材10に近接する位置まで延びている。
【0019】
かくして前述の潤滑油が充填される潤滑油封入室Lが、一対のシール取付部材6、7の間に、軸12、シール取付部材6、7、シールリング4、4、並びに弾性シール8、8によって区画され規定されている。
【0020】
なお、弾性シール8、8各々に一体的に備えられた環状部材10は、図2に示すごとくいずれか一方の弾性シール8にのみ、環状部材10二個分の大きさの断面を有した環状部材20として一体的に備えてもよい。
【0021】
上述のごとく構成されたメカニカルシール2の作用について図1を参照して説明する。
【0022】
(1)シール性:
メカニカルシール2は、その外方の環状の空間Sに環状部材10を配設したので、外部からの土砂、泥水などの異物が侵入し堆積する空間Sを減少させ最小限にすることができ、異物によるメカニカルシールのシール性の悪化を防止することができる。
【0023】
(2)シール性:
さらに弾性シール8及び環状部材10は、従来のOリングシール34(図4)と比較してその断面積を大きく体積を増加することができるので、侵入した土砂の固着、凍結などによる体積変化を容易に吸収することが可能になり、この点からもメカニカルシールのシール性の悪化を防止することができる。
【0024】
(3)弾性シール:
また、弾性シール8を矩形状断面にしたので、従来のOリングシール34(図4)のように、その円形断面に起因する組込時の装着部における転がり、それによるOリングシール34の捩れなども防止することができる。さらにOリングシール34の場合は、その円形の断面からして外部からの土砂、泥水などの異物の侵入、堆積する空間Sが大きくなりやすい(図4)が、矩形状断面はこの空間Sを小さくすることができる。
【0025】
(4)環状部材:
弾性シール8及び環状部材10を一体に形成すれば、それぞれを別体で組み込むことなくメカニカルシール2の組立てを容易にすることができる。
【0026】
以上、本発明を実施の形態に基づいて詳細に説明したが、本発明は上記の実施の形態に限定されるものではなく、例えば下記のように、本発明の範囲内においてさまざまな変形あるいは修正ができるものである。
【0028】
)環状部材:
本発明の実施の形態においては、環状部材10は弾性シール8、8の各々に、他の形態の環状部材20は一方の弾性シール8にのみ一体に備えられているが、図3に示すごとく弾性シール8とは別体の同一材料からなる、環状部材10二個分の大きさの断面を有する環状部材22としてもよい。
【0029】
)環状部材:
本発明の実施の形態における環状部材10、20、また環状部材22は、弾性シール8と同じ合成ゴムにより形成されているが、他の材料、例えば合成樹脂、金属材料などによって形成してもよい。
【0030】
【発明の効果】
本発明に従って構成されたメカニカルシールによれば、メカニカルシールの外周部の空間への外部からの土砂、泥水などの異物の侵入、堆積を最小限にし、シール性に不具合を生じさせることがないようにした、メカニカルシールが提供される。
【図面の簡単な説明】
【図1】本発明に従って構成されメカニカルシールの実施形態を示す断面図。
【図2】図1における環状部材の他の実施形態を示す断面図。
【図3】図1における環状部材のさらに他の実施形態を示す断面図。
【図4】従来のメカニカルシールの断面図。
【符号の説明】
2:メカニカルシール
4:シールリング
4c:外周溝
6:シール取付部材
6f:内周溝
7:シール取付部材
7d:内周溝
8:弾性シール
10:環状部材
20:環状部材
22:環状部材
32:シールリング
34:Oリングシール
F:シール面
L:潤滑油封入室
S:環状の空間
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a mechanical seal used for a rotating part of a construction machine, an industrial machine or the like.
[0002]
[Prior art]
For example, on a rotating part of a device that operates in an environment with a lot of foreign matter such as earth and sand, such as track rollers, idlers, sprockets of construction machines equipped with crawler type traveling bodies such as hydraulic excavators, or guide rings of industrial machines such as belt conveyors. In order to prevent foreign matter from entering the internal rotating sliding part from the outside through between the rotating part and the fixed part, and to prevent the internal lubricating oil from leaking to the outside, further between the rotating part and the fixed part. A mechanical seal is provided so as to cope with fluctuations in the direction of the rotation axis that occur. In this mechanical seal, a pair of seal rings having annular seal surfaces that are in sliding contact with each other are formed of metal, for example, and this is held by a pair of annular elastic seals between the rotating portion and the fixed portion. By doing so, it is possible to deal with foreign matters, fluctuations, and the like.
[0003]
A typical example of a mechanical seal is disclosed in Japanese Patent Laid-Open No. 9-60733. As shown in FIG. 4 (the figure corresponding to FIG. 1 of the same publication), this mechanical seal includes a pair of seal rings 32 and 32 and a pair of O-ring seals 34 and 34 which are a pair of elastic seals holding and holding them. I have. Further, in the technique disclosed in the publication, the mounting position of the O-ring seal 34 is prevented from moving due to foreign matters such as earth and sand and muddy water that have entered the space S outside the radial O-ring seal 34 from the outside. An annular recess 33 for seating the ring seal 34 is provided in each of the inner seal ring 32 and the outer seal mounting member.
[0004]
[Problems to be solved by the invention]
The conventional mechanical seal of the form as described above has the following problems to be solved that are desired to be improved.
[0005]
That is, foreign matters such as earth and sand and muddy water that have entered the annular space S outside the pair of O-ring seals 34 and 34 shown in FIG. 4 are compacted and accumulated over time, and are repeatedly expanded and contracted by freezing and thawing. As a result, the O-ring seal 34 is pushed in the direction of the inner lubricating oil enclosure chamber L, and foreign matter enters the lubricating oil enclosure chamber L, causing a sealing problem in the mechanical seal.
[0006]
The present invention has been made in view of the above-mentioned facts, and its technical problem is to minimize the intrusion and accumulation of foreign matter such as earth and sand and muddy water from the outside into the space of the outer peripheral portion of the mechanical seal, resulting in a poor sealing performance. It is an object of the present invention to provide a mechanical seal that does not cause the occurrence of the problem.
[0007]
[Means for Solving the Problems]
In the present invention, as a mechanical seal that solves the above technical problem, a pair of seal rings having annular seal surfaces that are in sliding contact with each other, and a pair of seals in which relative rotation of the seal rings is freely arranged to nip pressure held between the mounting member, and a pair of annular elastic seal interposed between each of the respective the seal mounting member of the seal ring, the elastic seal has a cross section of rectangular shape, the seal The ring includes a cylindrical wall having an L-shaped cross section that fits with the inner diameter portion of the rectangular cross section and an outer peripheral groove having an orthogonal wall, and the seal mounting member has an L-shaped cross section that fits with the outer diameter portion of the rectangular cross section. An annular space having a rectangular cross section formed by a pair of the seal mounting members opposed to each other on the outer periphery of the seal ring and on the outside thereof, and an inner peripheral groove having a cylindrical wall and an orthogonal wall In Includes an annular member set has been rectangular-shaped cross section, a mechanical seal is provided, characterized in that.
[0008]
And, by arranging an annular member in the space where foreign matter such as earth and sand and muddy water enters, the space where foreign matter accumulates is minimized, the accumulation of foreign matter is reduced, and the factors that cause the sealing failure of the mechanical seal are eliminated. Like that.
[0009]
In a preferred embodiment, the annular member is provided integrally with one each or one of the pair of elastic seal.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
The mechanical seal constructed in accordance with the present invention will now be described in more detail with reference to the accompanying drawings illustrating preferred embodiments.
[0011]
Referring to FIG. 1, the mechanical seal denoted by reference numeral 2 as a whole has a pair of seal rings 4, 4 having annular seal surfaces F that are in sliding contact with each other, and the seal ring 4 can be relatively rotated. A pair of annular elastic seals 8, 8 interposed between the seal rings 4, 4 and the seal attachment members 6, 7. The seal rings 4 and 4 are disposed in the annular space S formed by the seal mounting members 6 and 7 and the elastic seals 8 and 8 which are opposed to each other on the outer periphery and the outer periphery thereof, and are integrally formed with the elastic seals 8 and 8 respectively. The provided annular members 10 and 10 are provided.
[0012]
The mechanical seal 2 is lubricated to lubricate the rotating portion of the seal mounting member 7 between one seal mounting member 6 fixed to the shaft 12 and the seal mounting member 7 rotatably mounted to the shaft 12. The oil enclosure chamber L is maintained. The seal rings 4 and 4, the elastic seals 8 and 8, and the annular members 10 and 10 of the mechanical seal 2 are symmetric with respect to the seal surface F in the direction of the rotation axis 13, as is apparent from FIG. 1. And the same thing is attached symmetrically.
[0013]
The seal ring 4 has an L-shaped cross section extending in the axial direction of the rotation axis 13 and radially outward, and is formed of a special alloy cast iron with high wear resistance and strength. Inside the two sides of the cross-section L, a cross-section L-shaped having a cylindrical wall 4a and an orthogonal wall 4b extending radially outward from the cylindrical wall 4a, which are fitted into an inner diameter portion of a rectangular cross-section of the elastic seal 8 described later. The outer peripheral groove 4c is formed. On the back surface of the orthogonal wall 4b, on the outer peripheral side of the surface extending in the radial direction, the above-described sealing surface F is formed in a ring shape and a mirror surface.
[0014]
The seal attachment member 6 has a cylindrical portion 6a and an L-shaped annular portion 6b extending radially outward from the cylindrical portion 6a. The cylindrical portion 6 a is fitted to the shaft 12, one end portion is fixed to the shaft 12 by the through pin 14, and the other end portion extends through the inner diameter portions of the pair of seal rings 4 and 4. The outer peripheral surface 6 c of the annular portion 6 b is substantially formed into a perfect circle, and is positioned at an interval inside the inner peripheral surface 7 a of the other seal mounting member 7. The annular portion 6b has an inner circumferential groove 6f having a L-shaped cross section having a cylindrical wall 6d fitted to the outer diameter portion of the rectangular cross section of the elastic seal 8 and an orthogonal wall 6e extending radially inward from the cylindrical wall 6d. Is formed. An O-ring seal 16 is attached to an annular groove formed on the inner periphery of the cylindrical portion 6a at the fitting portion between the shaft 12 and the cylindrical portion 6a.
[0015]
The other seal mounting member 7 is rotatably supported on the shaft 12 via a sleeve bearing 18. At the opposite end of the seal mounting member 6 side, the above-mentioned inner peripheral surface 7a positioned outside the outer peripheral surface of the annular portion 6b of the seal mounting member 6 and a smaller diameter than the inner peripheral surface 7a, the seal mounting member A cylindrical wall 7b, which is formed to face the inner circumferential groove 6f in the same shape as the inner circumferential groove 6f and is fitted to the outer diameter portion of the rectangular cross section of the elastic seal 8, and extends radially inward from the cylindrical wall 7b. An inner circumferential groove 7d having an L-shaped cross section having an orthogonal wall 7c is formed.
[0016]
Elastic seal 8 is provided with a cross section of rectangular shape, and is formed of an elastic material such as oil-resistant synthetic rubber. The inner diameter portion of the rectangular cross section is compressed and fitted into the outer circumferential groove 4c of the seal ring 4 and the outer diameter portion is compressed and fitted into the inner circumferential groove 6f of the seal mounting member 6 and the inner circumferential groove 7d of the seal mounting member 7, respectively. Has been. The elastic seal 8 is also provided with an annular lip portion 8a at a portion that contacts the orthogonal wall 6e of the seal mounting member 6 and the orthogonal wall 7c of the seal mounting member 7.
[0017]
The aforementioned annular space S is defined by the outer periphery of the seal rings 4, 4, the seal mounting members 6, 7 facing the outside, and the elastic seals 8, 8.
[0018]
The annular member 10 is provided integrally with the elastic seal 8 so as to protrude into the annular space S. The annular member 10 has a rectangular cross section and is integrally formed of the same material as that of the elastic seal 8, or is formed separately from the same material and bonded together. The annular member 10 extends to a position close to the annular member 10 provided in the other elastic seal 8 in the space S.
[0019]
Thus, the lubricating oil enclosure chamber L filled with the above-described lubricating oil is provided between the pair of seal mounting members 6 and 7 by the shaft 12, the seal mounting members 6 and 7, the seal rings 4 and 4, and the elastic seals 8 and 8. Comparted and regulated.
[0020]
The annular member 10 provided integrally with each of the elastic seals 8 and 8 is an annular member having a cross section of a size corresponding to two annular members 10 only in one of the elastic seals 8 as shown in FIG. The member 20 may be integrally provided.
[0021]
The operation of the mechanical seal 2 configured as described above will be described with reference to FIG.
[0022]
(1) Sealability:
Since the annular member 10 is disposed in the outer annular space S of the mechanical seal 2, the space S in which foreign matter such as earth and sand and muddy water enters and accumulates can be reduced and minimized. It is possible to prevent deterioration of the sealing performance of the mechanical seal due to foreign matter.
[0023]
(2) Sealability:
Furthermore, since the elastic seal 8 and the annular member 10 can greatly increase the volume of the cross-sectional area as compared with the conventional O-ring seal 34 (FIG. 4), the volume change due to intrusion of earth and sand, freezing, etc. It becomes possible to absorb easily, and also from this point, deterioration of the sealing performance of the mechanical seal can be prevented.
[0024]
(3) Elastic seal:
In addition, since the elastic seal 8 has a rectangular cross section, as in the conventional O ring seal 34 (FIG. 4), rolling at the mounting portion due to the circular cross section causes twisting of the O ring seal 34. Etc. can also be prevented. Further, in the case of the O-ring seal 34, the space S in which foreign matters such as earth and sand and muddy water enter and accumulate from the circular cross-section tends to increase (FIG. 4), but the rectangular cross-section passes through this space S. Can be small.
[0025]
(4) Annular member:
If the elastic seal 8 and the annular member 10 are integrally formed, the assembly of the mechanical seal 2 can be facilitated without incorporating them separately.
[0026]
As described above, the present invention has been described in detail based on the embodiments. However, the present invention is not limited to the above-described embodiments, and various modifications or corrections may be made within the scope of the present invention, for example, as described below. It is something that can be done.
[0028]
( 1 ) Annular member:
In the embodiment of the present invention, the annular member 10 is provided integrally with each of the elastic seals 8, 8, and the other form of the annular member 20 is provided integrally with only one elastic seal 8, but as shown in FIG. 3. It is good also as the annular member 22 which consists of the same material separate from the elastic seal 8, and has a cross section of the magnitude | size for two annular members 10. As shown in FIG.
[0029]
( 2 ) Annular member:
The annular members 10 and 20 and the annular member 22 in the embodiment of the present invention are formed of the same synthetic rubber as that of the elastic seal 8, but may be formed of other materials such as a synthetic resin and a metal material. .
[0030]
【The invention's effect】
According to the mechanical seal constructed in accordance with the present invention, entry of foreign matter such as earth and sand and muddy water from the outside into the space of the outer peripheral portion of the mechanical seal, accumulation is minimized, and a problem in sealing performance is not caused. A mechanical seal is provided.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view illustrating an embodiment of a mechanical seal constructed in accordance with the present invention.
FIG. 2 is a cross-sectional view showing another embodiment of the annular member in FIG.
3 is a cross-sectional view showing still another embodiment of the annular member in FIG. 1. FIG.
FIG. 4 is a cross-sectional view of a conventional mechanical seal.
[Explanation of symbols]
2: mechanical seal 4: seal ring 4c: outer peripheral groove 6: seal mounting member 6f: inner peripheral groove 7: seal mounting member 7d: inner peripheral groove 8: elastic seal 10: annular member 20: annular member 22: annular member 32: Seal ring 34: O-ring seal F: Seal surface L: Lubricating oil sealing chamber S: Annular space

Claims (2)

対向して摺接する環状のシール面を有した一対のシールリングと、このシールリングを相対回転を自在に配設された一対のシール取付部材の間に挟圧し保持する、シールリングの各々とシール取付部材の各々との間に介在された一対の環状の弾性シールとを備え、
該弾性シールは矩形状の断面を備え、
該シールリングは該矩形状断面の内径部と嵌合する断面L状の円筒壁及び直交壁を有する外周溝を備え、
該シール取付部材は該矩形状断面の外径部と嵌合する断面L状の円筒壁及び直交壁を有する内周溝を備え、
該シールリングの外周、及びその外方において対向した一対の該シール取付部材、並びに一対の該弾性シールによって形成される矩形状断面の環状の空間に配設された矩形状断面の環状部材を備えている、ことを特徴とするメカニカルシール。
A pair of seal rings having annular seal surfaces that are in sliding contact with each other, and each seal ring and seal that hold the seal ring between a pair of seal mounting members that are arranged to freely rotate relative to each other. A pair of annular elastic seals interposed between each of the mounting members,
Elastic seal has a cross section of rectangular shape,
The seal ring includes an outer peripheral groove having an L-shaped cylindrical wall and an orthogonal wall fitted to the inner diameter portion of the rectangular cross section,
The seal mounting member includes an inner circumferential groove having an L-shaped cylindrical wall and an orthogonal wall that are fitted to the outer diameter portion of the rectangular cross-section.
The outer periphery of the seal ring, and a pair of the seal attachment member facing at its outward, and a pair of elastic sealing rectangular cross section of the annular ring member disposed a rectangular shaped cross-section in the space formed by the A mechanical seal characterized by comprising.
該環状部材は、該一対の弾性シールの各々又はいずれか一方に一体的に備えられている、請求項1記載のメカニカルシール。The mechanical seal according to claim 1, wherein the annular member is provided integrally with each of or one of the pair of elastic seals.
JP2002019809A 2002-01-29 2002-01-29 mechanical seal Expired - Fee Related JP4116298B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2002019809A JP4116298B2 (en) 2002-01-29 2002-01-29 mechanical seal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2002019809A JP4116298B2 (en) 2002-01-29 2002-01-29 mechanical seal

Publications (2)

Publication Number Publication Date
JP2003222247A JP2003222247A (en) 2003-08-08
JP4116298B2 true JP4116298B2 (en) 2008-07-09

Family

ID=27743515

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2002019809A Expired - Fee Related JP4116298B2 (en) 2002-01-29 2002-01-29 mechanical seal

Country Status (1)

Country Link
JP (1) JP4116298B2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4601942B2 (en) * 2003-11-20 2010-12-22 イーグル工業株式会社 Sealing device
ITMI20070147A1 (en) * 2007-01-30 2008-07-31 Berco Spa SEALING SYSTEM FOR TRACKING JOINT

Also Published As

Publication number Publication date
JP2003222247A (en) 2003-08-08

Similar Documents

Publication Publication Date Title
US8596872B2 (en) Roller bearing seal
US9291272B2 (en) Non-contact labyrinth seal assembly and method of construction thereof
CN112901663B (en) Sealing device
KR20100111270A (en) Non-contact labyrinth seal assembly and method of constructon thereof
CA2229339C (en) Bearing housing seal
US20110012314A1 (en) Apparatus with a seal
JP2007107674A (en) Sealing device
JP4471079B2 (en) Sealing device
JPS6128799B2 (en)
JP4116298B2 (en) mechanical seal
JP2007270873A (en) Sealing device
JP5918220B2 (en) Thrust bearing
JP4226401B2 (en) Oil seal for roll neck of rolling mill
JP7398089B2 (en) sealing device
US11592111B2 (en) Torque resistant seal
JP2018100730A (en) Sealing device
JP3845483B2 (en) Sealing device
KR102211034B1 (en) Mechanical seal device
JP2003097725A (en) Sealing device
FR3039865A1 (en) BEARING ASSEMBLY, VEHICLE AXLE COMPRISING SUCH A BEARING ASSEMBLY AND METHOD FOR MOUNTING A BEARING ASSEMBLY
JP2002364656A (en) Sealing device for rolling bearing
JPH10159983A (en) Sealing device
CN101749029B (en) Ring body for suppressing propagation of earth pressure, its mounting structure, disc cutter and roller device
JP5564180B2 (en) Sealing device, rolling bearing and wheel rolling bearing
JP2007285477A (en) Seal chain

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20040903

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20070420

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20070508

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20070629

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20070731

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20070912

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20080325

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20080417

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20110425

Year of fee payment: 3

R150 Certificate of patent or registration of utility model

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20110425

Year of fee payment: 3

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20110425

Year of fee payment: 3

S533 Written request for registration of change of name

Free format text: JAPANESE INTERMEDIATE CODE: R313533

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20110425

Year of fee payment: 3

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20110425

Year of fee payment: 3

S111 Request for change of ownership or part of ownership

Free format text: JAPANESE INTERMEDIATE CODE: R313113

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20120425

Year of fee payment: 4

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350

LAPS Cancellation because of no payment of annual fees