JPH0627884Y2 - mechanical seal - Google Patents

mechanical seal

Info

Publication number
JPH0627884Y2
JPH0627884Y2 JP10431389U JP10431389U JPH0627884Y2 JP H0627884 Y2 JPH0627884 Y2 JP H0627884Y2 JP 10431389 U JP10431389 U JP 10431389U JP 10431389 U JP10431389 U JP 10431389U JP H0627884 Y2 JPH0627884 Y2 JP H0627884Y2
Authority
JP
Japan
Prior art keywords
peripheral side
alumina ceramic
copper alloy
outer peripheral
carbon material
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 - Lifetime
Application number
JP10431389U
Other languages
Japanese (ja)
Other versions
JPH0343175U (en
Inventor
恵一 土谷
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Eagle Industry Co Ltd
Original Assignee
Eagle Industry Co Ltd
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 Eagle Industry Co Ltd filed Critical Eagle Industry Co Ltd
Priority to JP10431389U priority Critical patent/JPH0627884Y2/en
Publication of JPH0343175U publication Critical patent/JPH0343175U/ja
Application granted granted Critical
Publication of JPH0627884Y2 publication Critical patent/JPH0627884Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • Mechanical Sealing (AREA)

Description

【考案の詳細な説明】 〔産業上の利用分野〕 本考案は、機器の軸周をシールするメカニカルシール、
とくに耐スラリー性を向上させたメカニカルシールに関
する。
[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a mechanical seal for sealing the shaft circumference of a device,
In particular, it relates to a mechanical seal having improved slurry resistance.

〔従来の技術〕[Conventional technology]

従来、メカニカルシールの一種として、第3図に示すよ
うに、ハウジング107側に密嵌される断面略コ字形の
環状の金属ケース102に軸方向移動自在かつ回り止め
された状態に支持され、ばね103によって該金属ケー
ス102から抜け出す方向に押圧付勢されるとともに、
ゴムベローズ104によって金属ケース102との間の
気密が保持されたカーボン樹脂製のシールリング(静止
側密封環)101と、回転軸108側にガスケット10
6を介して装着されるアルミナセラミック製のメイティ
ングリング(回転側密封環)105とを備え、両リング
101,105が互いに密接摺回動することにより、外
周側の密封対象液Aが大気B側へ漏洩するのを阻止する
メカニカルシールが、ポンプ等の機器の軸封装置として
広く使用されている。
Conventionally, as a kind of mechanical seal, as shown in FIG. 3, a spring is supported by an annular metal case 102 having a substantially U-shaped cross section that is tightly fitted to the housing 107 side so as to be axially movable and non-rotatable. 103 is pressed and urged in the direction of coming out of the metal case 102,
A carbon resin seal ring (stationary side seal ring) 101, which is kept airtight from the metal case 102 by a rubber bellows 104, and a gasket 10 on the rotary shaft 108 side.
6 is equipped with an alumina ceramic mating ring (rotating side sealing ring) 105, and both rings 101, 105 are brought into close contact with each other so that the liquid A to be sealed on the outer peripheral side is exposed to the atmosphere B. Mechanical seals that prevent leakage to the side are widely used as shaft sealing devices for equipment such as pumps.

〔考案が解決しようとする課題〕[Problems to be solved by the device]

しかし、上記従来のメカニカルシールは、密封対象液A
中にスラリーを含むような場合、両リング101,10
5の摺動面101a,105a間にスラリーが侵入する
ことにより、カーボン樹脂からなるシールリング101
の摺動面101aが面荒れまたは異常摩耗を惹起し、密
封性能の低下をもたらしていた。
However, the conventional mechanical seal described above is
When the slurry is contained therein, both rings 101, 10
5, the slurry enters between the sliding surfaces 101a and 105a, so that the seal ring 101 made of carbon resin is formed.
The sliding surface 101a of No. 1 caused surface roughness or abnormal wear, resulting in deterioration of sealing performance.

本考案は、このような点に鑑み、メカニカルシールの耐
スラリー性を向上させることを課題としてなされたもの
である。
The present invention has been made in view of the above points and has an object to improve the slurry resistance of the mechanical seal.

〔課題を解決するための手段〕[Means for Solving the Problems]

上記課題を解決するため、本考案に係るメカニカルシー
ルは、回転側の密封環と、静止側の密封環の互いに密接
する摺動面のうち、一方の摺動面が、内周側の自己潤滑
性を有するカーボン材と、外周側の銅合金で形成され、
また、他方の摺動面が、前記カーボン材と対向する内周
側のアルミナセラミックと、前記銅合金と対向する外周
側の高純度アルミナセラミックで形成されてなる構成と
した。
In order to solve the above-mentioned problems, the mechanical seal according to the present invention is such that one of the sliding surfaces of the rotating-side sealing ring and the stationary-side sealing ring, which are in close contact with each other, has one sliding surface on the inner peripheral side. Formed of a carbon material having a property and a copper alloy on the outer peripheral side,
Further, the other sliding surface is formed of an alumina ceramic on the inner peripheral side facing the carbon material and a high-purity alumina ceramic on the outer peripheral side facing the copper alloy.

〔作用〕[Action]

上記本考案によると、両密封環の摺動面は、内周側がカ
ーボン樹脂とアルミナセラミックで構成され、外周側が
銅合金と高純度のアルミナセラミックで構成される。そ
して摺動面外周側では密封対象液の侵入により適度な潤
滑液膜を介在させながら良好な潤滑状態で密接摺動する
とともに、スラリーの侵入を阻止し、銅合金と高純度の
アルミナセラミックの組み合わせにより耐異物摩耗性が
向上している。また、摺動面内周側は大気と接している
ので十分な厚さの潤滑液膜は形成されにくいが、カーボ
ン樹脂とアルミナセラミックは摺動材としての相性がよ
く、自己潤滑作用による良好な潤滑性を奏する。
According to the above-mentioned present invention, the sliding surfaces of both sealing rings are made of carbon resin and alumina ceramic on the inner peripheral side and copper alloy and high-purity alumina ceramic on the outer peripheral side. On the outer peripheral side of the sliding surface, the liquid to be sealed penetrates closely in a good lubrication state with an appropriate lubricating liquid film interposed, and prevents the slurry from entering, combining copper alloy and high-purity alumina ceramic. Due to this, the foreign matter wear resistance is improved. Further, since the inner peripheral side of the sliding surface is in contact with the atmosphere, it is difficult to form a lubricating liquid film of sufficient thickness, but the carbon resin and alumina ceramic have a good compatibility as a sliding material and a good self-lubricating effect. Provides lubricity.

〔実施例〕〔Example〕

以下、本考案を、図示の実施例を参照しながら説明す
る。
Hereinafter, the present invention will be described with reference to the illustrated embodiments.

第1図に示す実施例においては、1はハウジング側に密
嵌される金属ケース2に軸方向移動自在かつ回り止めさ
れた状態に支持されるとともにばね3によって軸方向に
付勢された静止側密封環としてのシールリング、4は、
回転軸側にガスケット5を介して装着される回転側密封
環としてのメイティングリングで、両リング1,4は対
向する摺動面1a,4aにおいて互いに密接摺動する。
In the embodiment shown in FIG. 1, reference numeral 1 denotes a stationary side which is supported by a metal case 2 which is tightly fitted to the housing side in a state where it is movable in the axial direction and is prevented from rotating and is urged in the axial direction by a spring 3. Seal ring 4 as a seal ring,
A mating ring as a rotary seal ring mounted on the rotary shaft side via a gasket 5, both rings 1 and 4 closely slide on opposing sliding surfaces 1a and 4a.

シールリング1は自己潤滑性の優れたカーボン材11で
成形されるとともに、その摺動面1a側の端部の外周部
には銅合金12が埋設接合されており、すなわち摺動面
1aは、内周側のカーボン材11表面と、外周側の銅合
金12表面で構成されている。また、メイティングリン
グ4は、内周側のアルミナセラミック41と外周側の高
純度アルミナセラミック42を接合したもので、すなわ
ち摺動面4aは、その内周部におけるアルミナセラミッ
ク41表面が前記カーボン材11表面と摺動し、外周部
における高純度アルミナセラミック42表面が前記銅合
金12表面と摺動する。
The seal ring 1 is formed of a carbon material 11 having excellent self-lubricating property, and a copper alloy 12 is embedded and joined to the outer peripheral portion of the end portion on the sliding surface 1a side, that is, the sliding surface 1a is It is composed of the surface of the carbon material 11 on the inner peripheral side and the surface of the copper alloy 12 on the outer peripheral side. Further, the mating ring 4 is formed by joining the alumina ceramic 41 on the inner peripheral side and the high-purity alumina ceramic 42 on the outer peripheral side, that is, the sliding surface 4a has the surface of the alumina ceramic 41 at the inner peripheral portion thereof made of the carbon material. 11 surface, and the high-purity alumina ceramic 42 surface in the outer peripheral part slides on the copper alloy 12 surface.

このため、密封対象液A側である摺動面1a,4a外周
部における銅合金12表面と高純度アルミナセラミック
42表面間は、密封対象液Aによる潤滑膜が介在して良
好な流体潤滑が行なわれるとともに、密封対象液A中の
スラリーに対する耐性が大きくなっており、また、大気
B側であってドライ状態になりやすい摺動面1a,4a
内周部におけるカーボン材11表面とアルミナセラミッ
ク41表面同士は、摺動材としての相性がよく、面荒れ
や異常摩耗が起こりにくいものとなっている。
Therefore, between the surface of the copper alloy 12 and the surface of the high-purity alumina ceramic 42 on the outer peripheral portions of the sliding surfaces 1a and 4a on the liquid A side to be sealed, a lubricating film of the liquid A to be sealed is present for good fluid lubrication. In addition, the resistance to the slurry in the liquid A to be sealed is increased, and the sliding surfaces 1a and 4a on the atmosphere B side, which are likely to be in a dry state.
The surface of the carbon material 11 and the surface of the alumina ceramic 41 in the inner peripheral portion have a good compatibility as a sliding material, and surface roughness and abnormal wear are less likely to occur.

次に第2図の実施例は、上記第1図の構成に加えて、シ
ールリング1の摺動面1aに銅合金12とカーボン材1
1の境界に位置して環状溝6を形成し、この環状溝6内
に密封対象液Aを満たすことによって、大気B側である
内周のカーボン材11表面とアルミナセラミック41表
面間にも密封対象液Aによる潤滑膜を介在させて潤滑性
を向上させているものである。
Next, in the embodiment shown in FIG. 2, in addition to the structure shown in FIG. 1, a copper alloy 12 and a carbon material 1 are provided on the sliding surface 1a of the seal ring 1.
By forming the annular groove 6 at the boundary of No. 1 and filling the annular groove 6 with the liquid A to be sealed, the inside of the carbon material 11 on the atmosphere B side and the surface of the alumina ceramic 41 are also sealed. The lubricity is improved by interposing a lubricating film of the target liquid A.

〔考案の効果〕[Effect of device]

以上、本考案によると、摺動面外周側では、銅合金と高
純度アルミナセラミックの組み合わせにより耐異物摩耗
性が向上し、また、摺動面内周側は、摺動材としての相
性のよいカーボン樹脂とアルミナセラミックの組み合わ
せとなっているとともに、前記外周側の銅合金と高純度
アルミナセラミックによって外周からのスラリーの侵入
が阻止されていることから潤滑性が良好であり、したが
ってシール性および耐久性が向上するといった優れた効
果を奏する。
As described above, according to the present invention, on the outer peripheral side of the sliding surface, the foreign material wear resistance is improved by the combination of the copper alloy and the high-purity alumina ceramic, and on the inner peripheral side of the sliding surface, the compatibility with the sliding material is good. It has a combination of carbon resin and alumina ceramics, and because the copper alloy and high-purity alumina ceramics on the outer peripheral side prevent the slurry from entering from the outer periphery, it has good lubricity, and therefore sealability and durability. It has an excellent effect that the property is improved.

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

第1図は本考案の第一実施例を示す要部断面図、第2図
は第二実施例を示す要部断面図、第3図は従来例を示す
半裁断面図である。 1……シールリング、1a,4a……摺動面 4……メイティングリング、11……カーボン材 12……銅合金、41……アルミナセラミック 42……高純度アルミナセラミック
FIG. 1 is a sectional view of a main part showing a first embodiment of the present invention, FIG. 2 is a sectional view of a main part showing a second embodiment, and FIG. 3 is a half-cut sectional view showing a conventional example. 1 ... Seal ring, 1a, 4a ... Sliding surface 4 ... Mating ring, 11 ... Carbon material 12 ... Copper alloy, 41 ... Alumina ceramic 42 ... High-purity alumina ceramic

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 【請求項1】回転側の密封環と、静止側の密封環の互い
に密接する摺動面のうち、一方の摺動面が、内周側の自
己潤滑性を有するカーボン材と、外周側の銅合金で形成
され、また、他方の摺動面が、前記カーボン材と対向す
る内周側のアルミナセラミックと、前記銅合金と対向す
る外周側の高純度アルミナセラミックで形成されたこと
を特徴とするメカニカルシール。
1. A rotary side sealing ring and a stationary side sealing ring, of which sliding surfaces are in close contact with each other, one sliding surface has a self-lubricating carbon material on the inner peripheral side and an outer peripheral side carbon material. It is formed of a copper alloy, and the other sliding surface is formed of an alumina ceramic on the inner peripheral side facing the carbon material and a high-purity alumina ceramic on the outer peripheral side facing the copper alloy. Mechanical seal to do.
JP10431389U 1989-09-05 1989-09-05 mechanical seal Expired - Lifetime JPH0627884Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10431389U JPH0627884Y2 (en) 1989-09-05 1989-09-05 mechanical seal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10431389U JPH0627884Y2 (en) 1989-09-05 1989-09-05 mechanical seal

Publications (2)

Publication Number Publication Date
JPH0343175U JPH0343175U (en) 1991-04-23
JPH0627884Y2 true JPH0627884Y2 (en) 1994-07-27

Family

ID=31653108

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10431389U Expired - Lifetime JPH0627884Y2 (en) 1989-09-05 1989-09-05 mechanical seal

Country Status (1)

Country Link
JP (1) JPH0627884Y2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006118069A1 (en) * 2005-04-28 2006-11-09 Eagle Industry Co., Ltd. Mechanical seal device
CN103649608B (en) * 2011-09-03 2016-06-15 伊格尔工业股份有限公司 Slide unit
JP2020125805A (en) * 2019-02-04 2020-08-20 イーグル工業株式会社 mechanical seal

Also Published As

Publication number Publication date
JPH0343175U (en) 1991-04-23

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