JPH0814321B2 - Packing of shaft for sealing liquid medium - Google Patents
Packing of shaft for sealing liquid mediumInfo
- Publication number
- JPH0814321B2 JPH0814321B2 JP63308705A JP30870588A JPH0814321B2 JP H0814321 B2 JPH0814321 B2 JP H0814321B2 JP 63308705 A JP63308705 A JP 63308705A JP 30870588 A JP30870588 A JP 30870588A JP H0814321 B2 JPH0814321 B2 JP H0814321B2
- Authority
- JP
- Japan
- Prior art keywords
- shaft
- packing
- liquid medium
- annular protrusion
- guide groove
- 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
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
- F16J15/3244—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with hydrodynamic pumping action
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
- F16J15/3204—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Sealing With Elastic Sealing Lips (AREA)
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 本発明は、気体状媒体、特に大気に対して液体状媒体
を密閉するためのシャフトのパッキンであって、シャフ
トのまわりに配置された環状固定部と、シャフトのまわ
りを取り囲みこれに接触する弾性材からなるリップ部
と、固定部とリップ部の間に広がるウェブを備え、リッ
プ部はシャフトに密閉状態に接触する環状のパッキン端
縁と、シャフトのまわりを取り囲む環状突出部を有し、
環状突出部は、運転状態においてシャフトに対して一定
の角度をなしてパッキン端縁から密閉されるべき液体状
媒体に向かってのびる円錐面状内側面を有しているもの
に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a packing for a shaft for sealing a gaseous medium, particularly a liquid medium against the atmosphere, and an annular fixing portion arranged around the shaft. And a lip portion made of an elastic material that surrounds and contacts the shaft, and a web that extends between the fixed portion and the lip portion, and the lip portion has an annular packing edge that contacts the shaft in a sealed state, and the shaft. Has an annular protrusion that surrounds
The annular projection has a conical inner surface that extends from the packing edge toward the liquid medium to be sealed at an angle to the shaft in the operating state.
従来技術とその問題点 従来のこの種のシャフトのパッキン（ドイツ国特許第
1525882号および同第1101074号参照）においては、液体
状媒体は比較的高い粘性を有する潤滑オイルからなって
いる。それに加えて、液体状媒体は気体状媒体よりもわ
ずかに低い圧力を有しており、その結果、パッキン端縁
の両側にほぼ等しい圧力が及ぼされるようになってい
る。Conventional technology and its problems Conventional packing of this type of shaft (German Patent No. 1)
1525882 and 1101074), the liquid medium consists of lubricating oil having a relatively high viscosity. In addition, the liquid medium has a slightly lower pressure than the gaseous medium, so that approximately equal pressure is exerted on both sides of the packing edge.
かかるパッキンの場合には、潤滑オイルがパッキン端
縁およびシャフトの間の隙間を通じて気体状媒体側の空
間に漏れ出すことを防止することが重要である。なぜな
ら、それによって潤滑オイルが失われるからである。In the case of such packing, it is important to prevent the lubricating oil from leaking out into the space on the gaseous medium side through the gap between the packing edge and the shaft. This is because the lubricating oil is lost.
したがって、環状突出部の円錐面状内側面のシャフト
に対する角度が45゜またはこれより大きい値に選ばれて
おり、パッキン端縁のシャフトに対する押圧力を減じる
ような、パッキン端縁およびシャフトの間に対する潤滑
オイルの楔形状の注入が防止される。Therefore, the angle of the conical inner surface of the annular protrusion with respect to the shaft is selected to be 45 ° or more, and the angle between the packing edge and the shaft is reduced so as to reduce the pressing force of the packing edge against the shaft. A wedge-shaped injection of lubricating oil is prevented.
しかしながら、この構成は、液体状媒体が、例えば水
からなっていて、小さい粘性を有しており、かつ水の圧
力が気体状媒体の圧力よりも大きい場合には望ましくな
いものであることが明らかである。これは、船舶のスク
リューシャフトのパッキンの場合に当てはまる。However, this arrangement proves to be undesirable if the liquid medium consists, for example, of water, has a low viscosity and the pressure of the water is greater than the pressure of the gaseous medium. Is. This is the case for the packing of the ship's screw shaft.
すなわち、この場合には、水は潤滑オイルと異なり粘
性が小さいから、パッキン端縁突出部の円錐面状内側面
のシャフトに対する角度が大きいと、パッキン端縁とシ
ャフトとの間に侵入して水膜を形成することができな
い。このため、パッキン端縁の潤滑が十分に達成され
ず、パッキンの十分な耐用年数を保証することができな
い。That is, in this case, water has a low viscosity unlike the lubricating oil. Therefore, if the angle of the conical inner surface of the protruding portion of the packing edge with respect to the shaft is large, water will enter between the packing edge and the shaft. The film cannot be formed. For this reason, the lubrication of the packing edge is not sufficiently achieved, and a sufficient service life of the packing cannot be guaranteed.
解決しようとする課題 したがって、本発明の課題は、液体状媒体が、例えば
水からなっていて、小さい粘性を有し、かつ水の圧力が
気体状媒体の圧力よりも大きい場合にも、水によるパッ
キン端縁の十分な潤滑を達成し、必要なパッキンの耐用
年数を得ることにある。The problem to be solved by the invention is therefore that the liquid medium is, for example, composed of water, has a low viscosity, and even if the pressure of the water is higher than the pressure of the gaseous medium, The aim is to achieve sufficient lubrication of the packing edges and to obtain the required service life of the packing.
課題を解決するための手段および作用 この課題を解決するため、本発明は、液体状媒体を気
体状媒体に対して密閉するためのシャフトのパッキンで
あって、シャフトのまわりに配置された環状固定部と、
シャフトのまわりを取り囲みこれに接触する弾性材から
なるリップ部と、固定部とリップ部の間に広がるウェブ
を備え、リップ部はシャフトに密閉状態に接触する環状
のパッキン端縁と、シャフトのまわりを取り囲む環状突
出部を有し、環状突出部は、運転状態において前記シャ
フトに対して一定の角度をなしてパッキン端縁から密閉
されるべき液体状媒体に向かってのびる円錐面状内側面
を有しているものにおいて、液体状媒体が小さい粘性を
有し、さらに液体状媒体が気体状媒体よりも大きい圧力
を有する場合において、環状突出部の円錐面状内側面は
シャフトに対してたかだか12゜の角度をなしていること
により、液体状媒体のパッキン端縁を通じた気体状媒体
側へのわずかな漏れが生じるようになっており、角度は
液体媒体の粘性率が小さくなるにつれて小さくなるよう
に選ばれることを特徴とするシャフトのパッキンを構成
したものである。Means and Actions for Solving the Problem In order to solve this problem, the present invention relates to a packing of a shaft for sealing a liquid medium with respect to a gaseous medium, the annular fixing being arranged around the shaft. Department,
It has a lip part made of an elastic material that surrounds the shaft and contacts the shaft, and a web extending between the fixing part and the lip part, and the lip part has an annular packing edge contacting the shaft in a sealed state, and the lip part around the shaft. And an annular projection having a conical inner surface extending from the packing edge toward the liquid medium to be sealed at an angle to the shaft in an operating state. In the case where the liquid medium has a low viscosity and the liquid medium has a higher pressure than the gaseous medium, the inner surface of the conical surface of the annular protrusion is at most 12 ° with respect to the shaft. The angle of the liquid medium causes a slight leakage of the liquid medium to the side of the gaseous medium through the packing edge, and the angle is the viscosity of the liquid medium. Is obtained by constituting the packing shaft, characterized in that it is selected so as smaller decreases.
この構成によれば、環状突出部の円錐面状内側面がシ
ャフトに対してたかだか12゜の角度をなしていることに
より、パッキン端縁およびシャフトの間に楔形状に圧力
が加えられる。これによってパッキン端縁が水力学的に
シャフト上に浮かび、パッキン端縁とシャフトの間に液
体状媒体の膜が形成されるとともに、気体状媒体側の空
間にわずかな液体状媒体の漏れが引き起こされる。その
結果、粘性率の小さい液体状媒体が望ましくない潤滑剤
であるにもかわらず、パッキン端縁およびシャフトの間
の十分な潤滑が達成される。With this configuration, the conical inner surface of the annular protrusion forms an angle of at most 12 ° with respect to the shaft, so that wedge-shaped pressure is applied between the packing edge and the shaft. This hydraulically floats the packing edge on the shaft, forms a film of the liquid medium between the packing edge and the shaft, and causes a slight leakage of the liquid medium in the space on the gaseous medium side. Be done. As a result, sufficient lubrication between the packing edge and the shaft is achieved despite the low viscosity liquid medium being an undesirable lubricant.
また、環状突出部の円錐面状内側面がシャフトに対し
てなす角度を、液体状媒体の粘性率が小さくなるにつれ
て小さくなるように選ぶことにより、パッキン端縁とシ
ャフトの間に、より鋭角の楔状に圧力が加えられるの
で、粘性率の小さい液体状媒体であってもパッキン端縁
とシャフトの間に容易に導入することができ、上述のよ
うに、パッキン端縁とシャフトの間に液体状媒体の膜を
形成することができる。Also, by selecting the angle formed by the conical inner surface of the annular protrusion with respect to the shaft so that it becomes smaller as the viscosity of the liquid medium becomes smaller, a more acute angle is provided between the packing edge and the shaft. Since the wedge-shaped pressure is applied, even a liquid medium having a low viscosity can be easily introduced between the packing edge and the shaft, and as described above, the liquid medium can be introduced between the packing edge and the shaft. A film of medium can be formed.
このとき、液体状媒体が気体状媒体空間側に漏れ出す
ことは不利な点とならないことが重要である。というの
は、この漏れた液体状媒体は、比較的簡単なよく知られ
た取水装置によって容易に取り除かれ得るからである。At this time, it is important that leakage of the liquid medium to the side of the gaseous medium space does not become a disadvantage. This leaking liquid medium can be easily removed by a relatively simple and well known water intake device.
４゜〜８゜の非常に小さい鋭角のテーパ角度を有する
リング状のリップパッキンがすでに知られている（ドイ
ツ国特許第1248399号）。しかしながら、このリップパ
ッキンは、運転制御のための円錐面状内側面とは無関係
であって、むしろ、リップパッキンへの取付け以前の事
柄に関係しており、この円錐面状内側面は、運転状態に
おいて、シャフト上で弾性変形をすることにより除去さ
れるものであり、前述のような押圧とは無関係である。Ring-shaped lip packings with a very small acute taper angle of 4 ° to 8 ° are already known (German Patent No. 1248399). However, this lip packing has nothing to do with the conical inner surface for operating control, but rather with what it was before it was attached to the lip packing. In the above, it is removed by elastically deforming on the shaft and has nothing to do with the pressing as described above.
本発明の好ましい実施例によれば、環状突出部の円錐
面状内側面には水力学的に作用するガイド溝が形成さ
れ、ガイド溝は液体状媒体を気体状媒体側に導くような
形状を有している。そして、意図された気体状媒体側空
間への液体状媒体の流れが促進され、強められる。According to a preferred embodiment of the present invention, a guide groove that acts hydraulically is formed on the inner surface of the conical surface of the annular protrusion, and the guide groove has a shape that guides the liquid medium to the gaseous medium side. Have Then, the flow of the liquid medium to the intended gas medium side space is promoted and strengthened.
本発明の別の好ましい実施例によれば、ガイド溝はパ
ッキン端縁に向けられたピッチを備えたネジ溝として形
成され、ガイド溝は環状突出部の周囲をネジ溝の少なく
とも１回転分だけ取り囲んでいる。これによって、簡単
な方法で、ピッチを対応して変えることにより、ガイド
溝の導水の強さをその都度必要に応じて調節することが
できる。According to another preferred embodiment of the invention, the guide groove is formed as a thread groove with a pitch directed towards the packing edge, the guide groove surrounding the annular projection by at least one revolution of the thread groove. I'm out. This makes it possible to adjust the water guiding strength of the guide groove as needed by changing the pitch in a simple manner.
実施例 以下、添付図面を参照しながら本発明の好ましい実施
例について説明する。Embodiments Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.
第１図は、本発明の１実施例のシャフトの軸方向に沿
った断面図である。この実施例は、本発明を船舶のスク
リューシャフトに適用したものであり、この場合、密閉
されるべき水は小さい粘性を有し、さらに水が大気より
も大きい圧力を有している。FIG. 1 is a sectional view taken along the axial direction of a shaft according to one embodiment of the present invention. In this example, the present invention is applied to a screw shaft of a ship, in which case the water to be sealed has a small viscosity and the water has a pressure higher than that of the atmosphere.
第１図において、リップパッキンは、シャフト（７）
のまわりに配置された環状固定部（１）と、シャフト
（７）のまわりを取り囲みこれに接触する弾性材からな
るリップ部（３）と、固定部（１）とリップ部（３）の
間に広がるウェブ（２）とを備えている。In FIG. 1, the lip packing has a shaft (7).
Between the fixed part (1) and the lip part (3), and an annular fixed part (1) arranged around the shaft, a lip part (3) surrounding the shaft (7) and made of an elastic material and in contact therewith. And a web (2) that spreads over.
リップ部（３）はシャフト（７）に密閉状態に接触す
る環状のパッキン端縁（４）と、シャフト（７）のまわ
りを取り囲む環状突出部（５）を有している。環状突出
部（５）は、運転状態においてシャフト（７）に対して
非常に小さい鋭角αをなしてパッキン端縁（４）から密
閉されるべき水（Ｗ）に向かってのびる円錐面状内側面
を有している。この角度αは、たかだか12゜に選ばれ、
とりわけ、密閉すべき液体状媒体の粘性率が小さくなる
につれて小さくなるように選ばれる。The lip portion (3) has an annular packing edge (4) contacting the shaft (7) in a sealed state, and an annular protrusion (5) surrounding the shaft (7). The annular protrusion (5) forms a very small acute angle α with the shaft (7) in the operating state and extends from the packing edge (4) toward the water (W) to be sealed. have. This angle α is chosen to be at most 12 °,
In particular, it is chosen to be smaller as the viscosity of the liquid medium to be sealed becomes smaller.
大気（Ｇ）側の円錐面状内側面は、軸方向において本
質的に、水に向けられた円錐面状内側面よりも短くなっ
ているが、本発明によるリップ部（３）の機能にとって
は重要なものではない。The conical inner surface on the atmosphere (G) side is essentially shorter in the axial direction than the conical inner surface facing the water, but for the function of the lip (3) according to the invention. Not important.
以上の構成においては、水は、環状突出部（５）の円
錐面状内側面がシャフト（７）に対して非常に小さい鋭
角をなしていることにより、パッキン端縁（４）および
シャフト（７）の間に楔形状に圧力が加えられる。そし
て、パッキン端縁（４）が水力学的にシャフト上に浮か
び、パッキン端縁（４）とシャフト（７）の間に水膜が
形成されるとともに、大気（Ｇ）側の空間にわずかな水
漏れが引き起こされる。その結果、水が望ましくない潤
滑剤であるにもかわらず、パッキン端縁（４）およびシ
ャフト（７）の間の十分な潤滑が達成され、必要なパッ
キンの耐用年数を得ることができる。In the above structure, water has a conical inner surface of the annular protrusion (5) forming a very small acute angle with respect to the shaft (7), so that the packing edge (4) and the shaft (7) are made. Between), a wedge-shaped pressure is applied. Then, the packing edge (4) is hydraulically floated on the shaft, a water film is formed between the packing edge (4) and the shaft (7), and a slight amount is present in the space on the atmosphere (G) side. Water leakage is caused. As a result, sufficient lubrication between the packing edge (4) and the shaft (7) is achieved, despite the water being an undesirable lubricant, and the required packing life can be obtained.
また、環状突出部（５）の円錐面状内側面がシャフト
（７）に対してなす角度を、液体状媒体の粘性率が小さ
くなるにつれて小さくなるように選ぶことにより、パッ
キン端縁（４）とシャフト（７）の間に、より鋭角の楔
状に圧力が加えられるので、粘性率の小さい液体状媒体
であってもパッキン端縁（４）とシャフト（７）の間に
容易に導入することができ、パッキン端縁（４）とシャ
フト（７）の間に液体状媒体の膜を形成することができ
る。Further, the angle formed by the conical inner surface of the annular protrusion (5) with respect to the shaft (7) is selected to be smaller as the viscosity of the liquid medium becomes smaller, so that the packing edge (4) is formed. Since pressure is applied between the shaft and the shaft (7) in a more acute-angled wedge shape, even a liquid medium having a low viscosity can be easily introduced between the packing edge (4) and the shaft (7). It is possible to form a film of liquid medium between the packing edge (4) and the shaft (7).
このとき、水が気体状媒体空間側に漏れ出すことは不
利な点とならないことが重要である。というのは、この
漏れた水は、比較的簡単なよく知られた取水装置によっ
て容易に取り除かれ得るからである。At this time, it is important that leakage of water to the side of the gaseous medium space is not a disadvantage. This leaked water can be easily removed by a relatively simple and well known water intake device.
こうして、本発明によれば、液体状媒体が、例えば水
からなっていて、小さい粘性を有し、かつ液体状媒体の
圧力が気体状媒体の圧力よりも大きい場合に、十分実用
に耐えるパッキン機能を有すると同時に、パッキンの十
分な潤滑がなされて十分な耐用年数をもつシャフトのパ
ッキンを提供することができる。Thus, according to the present invention, the liquid medium is made of, for example, water, has a small viscosity, and the packing function is sufficiently practical when the pressure of the liquid medium is larger than the pressure of the gaseous medium. At the same time, it is possible to provide a packing for a shaft with sufficient packing lubrication and a sufficient service life.
第２図は、本発明の別の実施例のシャフトの軸方向に
沿った断面図である。第２図に示したパッキンは、環状
突出部（５）の円錐面状内側面に、パッキン端縁に向け
られたピッチを備えたネジ溝からなるガイド溝（６）が
形成されていること以外は、第１図の実施例と同様の構
成を有している。FIG. 2 is a sectional view taken along the axial direction of a shaft according to another embodiment of the present invention. The packing shown in FIG. 2 has a guide groove (6) formed on the inner surface of the conical surface of the annular protrusion (5), the guide groove (6) being a thread groove having a pitch toward the packing edge. Has the same configuration as the embodiment of FIG.
このガイド溝によって、大気（Ｇ）側の空間への水の
流れが促進される。また、ピッチを変えることによっ
て、ガイド溝（６）の導水の強さを必要に応じて調節す
ることができる。The guide groove facilitates the flow of water to the space on the atmosphere (G) side. Further, by changing the pitch, it is possible to adjust the strength of the water guide in the guide groove (6) as needed.
第３図は、本発明によるパッキンの２つが互いにシャ
フトの軸方向に沿って並んで配置されたパッキン構造を
示す断面図である。第３図に示したように、本発明によ
るパッキンは、単独で使用されるだけでなく、２つ以上
のものがシャフトの軸方向に並設されてパッキン構造と
して配置されることもできる。第３図において、（1,4,
5）は密閉すべき液体状媒体（Ｗ）に対するパッキンで
あり、（１′,4′,5′）は気体状媒体に対するパッキン
である。FIG. 3 is a sectional view showing a packing structure in which two packings according to the present invention are arranged side by side along the axial direction of the shaft. As shown in FIG. 3, the packing according to the present invention may be used not only alone but also as a packing structure in which two or more packings are arranged side by side in the axial direction of the shaft. In Fig. 3, (1,4,
5) is a packing for the liquid medium (W) to be sealed, and (1 ', 4', 5 ') is a packing for the gaseous medium.
第１図は、本発明の１実施例のシャフトの軸方向に沿っ
た断面図、 第２図は、本発明の別の実施例のシャフトの軸方向に沿
った断面図、 第３図は、本発明によるパッキンの２つが互いにシャフ
トの軸方向に沿って並んで配置されたパッキン構造を示
す断面図である。 （１）……固定部 （２）……ウェブ （３）……リップ部 （４）……パッキン端縁 （５）……突出部 （６）……ガイド溝 （７）……シャフトFIG. 1 is a sectional view taken along the axial direction of a shaft according to one embodiment of the present invention, FIG. 2 is a sectional view taken along the axial direction of a shaft according to another embodiment of the present invention, and FIG. FIG. 3 is a cross-sectional view showing a packing structure in which two packings according to the present invention are arranged side by side along the axial direction of the shaft. (1) …… Fixed part (2) …… Web (3) …… Lip part (4) …… Packing edge (5) …… Projection part (6) …… Guide groove (7) …… Shaft
Claims (3)
ためのシャフトのパッキンであって、シャフトのまわり
に配置された環状固定部と、前記シャフトのまわりを取
り囲みこれに接触する弾性材からなるリップ部と、前記
固定部と前記リップ部の間に広がるウェブを備え、前記
リップ部は前記シャフトに密閉状態に接触する環状のパ
ッキン端縁と、前記シャフトのまわりを取り囲む環状突
出部を有し、前記環状突出部は、運転状態において前記
シャフトに対して一定の角度をなして前記パッキン端縁
から密閉されるべき液体状媒体に向かってのびる円錐面
状内側面を有しているものにおいて、 前記液体状媒体が小さい粘性を有し、さらに前記液体状
媒体が前記気体状媒体よりも大きい圧力を有する場合に
おいて、前記環状突出部の前記円錐面状内側面は前記シ
ャフトに対してたかだか12゜の角度をなしていることに
より、前記液体状媒体の前記パッキン端縁を通じた前記
気体状媒体側へのわずかな漏れが生じるようになってお
り、前記角度は前記液体状媒体の粘性率が小さくなるに
つれて小さくなるように選ばれることを特徴とするシャ
フトのパッキン。1. A packing for a shaft for sealing a liquid medium against a gaseous medium, comprising an annular fixing portion arranged around the shaft, and an elastic material surrounding and contacting the shaft. And a web extending between the fixed portion and the lip portion, the lip portion including an annular packing edge that contacts the shaft in a sealed state, and an annular protrusion that surrounds the shaft. The annular protrusion has a conical inner surface extending from the packing edge toward the liquid medium to be sealed at a constant angle with respect to the shaft in an operating state. In the case where the liquid medium has a low viscosity and the liquid medium has a larger pressure than the gaseous medium, the cone of the annular protrusion is The planar inner surface forms an angle of at most 12 ° with respect to the shaft so that a slight leakage of the liquid medium through the packing edge towards the gaseous medium occurs. The packing of a shaft, wherein the angle is selected to be smaller as the viscosity of the liquid medium is smaller.
水力学的に作用するガイド溝が形成され、前記ガイド溝
は前記液体状媒体を前記気体状媒体側に導くような形状
を有していることを特徴とする請求項１に記載のシャフ
トのパッキン。2. A guide groove that acts hydraulically is formed on the inner surface of the conical surface of the annular protrusion, and the guide groove has a shape that guides the liquid medium to the gaseous medium side. The packing of the shaft according to claim 1, which has.
れたピッチを備えたネジ溝として形成され、前記ガイド
溝は前記環状突出部の周囲をネジ溝の少なくとも１回転
分だけ取り囲んでいることを特徴とする請求項２に記載
のシャフトのパッキン。3. The guide groove is formed as a thread groove having a pitch directed to the packing edge, and the guide groove surrounds the annular protrusion by at least one rotation of the thread groove. The packing of the shaft according to claim 2.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3742080A DE3742080C2 (en) | 1987-12-11 | 1987-12-11 | Shaft seal for sealing a liquid medium |
| DE3742080.1 | 1987-12-11 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01193466A JPH01193466A (en) | 1989-08-03 |
| JPH0814321B2 true JPH0814321B2 (en) | 1996-02-14 |
Family
ID=6342410
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63308705A Expired - Lifetime JPH0814321B2 (en) | 1987-12-11 | 1988-12-06 | Packing of shaft for sealing liquid medium |
Country Status (8)
| Country | Link |
|---|---|
| JP (1) | JPH0814321B2 (en) |
| KR (1) | KR0121287B1 (en) |
| CN (1) | CN1015817B (en) |
| AU (1) | AU609910B2 (en) |
| DE (1) | DE3742080C2 (en) |
| GB (1) | GB2213540B (en) |
| NL (1) | NL193289C (en) |
| SE (1) | SE470140B (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3800706C2 (en) * | 1988-01-13 | 1994-09-01 | Blohm Voss Ag | Kit for a shaft seal, especially on a stern tube of a ship |
| DE4125498A1 (en) * | 1991-08-01 | 1993-02-04 | Leybold Ag | Shaft seal for through passage in vacuum plants - has sealing part forming ring gap containing locking fluid |
| DE4141999C2 (en) * | 1991-12-19 | 1997-06-12 | Blohm Voss Ag | Lip seal for sealing a shaft, especially a ship propeller shaft |
| DE9213373U1 (en) * | 1992-10-05 | 1994-02-10 | Merkel Martin Gmbh Co Kg | Shaft sealing ring with a sealing lip |
| DE10019994A1 (en) | 2000-04-22 | 2001-10-31 | Freudenberg Carl Fa | Radial seal for shaft comprises annular metal base which carries rubber ring with sealing lip pressed against shaft by spiral spring, working planes of sealing lip and spring being different before seal is fastened in place |
| FR2939836B1 (en) * | 2008-12-12 | 2015-05-15 | Snecma | SEAL FOR PLATFORM SEAL IN A TURBOMACHINE ROTOR |
| DE102011107735A1 (en) * | 2010-09-29 | 2012-03-29 | Carl Freudenberg Kg | Oil seal for radial rotary shaft arrangement, has middle guard lip that is provided in position between seal lips along axial direction |
| DE102011018584A1 (en) * | 2011-04-11 | 2012-10-11 | Blohm + Voss Industries Gmbh | Seal for sealing waves |
| DE102011102477A1 (en) | 2011-05-24 | 2012-11-29 | Blohm + Voss Industries Gmbh | seal |
| DE102012006125A1 (en) | 2012-03-20 | 2013-09-26 | Blohm + Voss Industries Gmbh | Sealing ring for sealing e.g. propeller shaft of ship against water, has sealing edge made of wear resistance material, and clamping element and membrane applied with high elasticity material, where materials are bonded by vulcanization |
| CN103742651B (en) * | 2014-01-29 | 2016-11-16 | 烟台润蚨祥油封有限公司 | A kind of low friction reciprocating movement sealing part |
| KR101579957B1 (en) | 2015-03-03 | 2015-12-28 | 한국에스케이에프씰 주식회사 | Engine oil seal of friction reducing type |
Family Cites Families (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE729128C (en) * | 1938-02-27 | 1942-12-10 | Freudenberg Carl Fa | Seal made of elastic material for rotating shafts or rods going back and forth |
| DE884262C (en) * | 1943-07-25 | 1953-07-27 | Voith Gmbh J M | Seal with an artificial rubber sleeve |
| DE1101074B (en) * | 1957-08-20 | 1961-03-02 | Kupfer Asbest Co | Shaft seal |
| DE1248399B (en) * | 1962-12-04 | 1967-08-24 | Gen Motors Corp | Lip ring seal for shafts |
| GB1110218A (en) * | 1964-09-24 | 1968-04-18 | Angus George Co Ltd | Improvements in shaft seals |
| DE1525882B2 (en) * | 1965-11-29 | 1971-07-01 | Stensholrns Fabnks Aktiebolag, Landskrena (Schweden) | OIL SEAL |
| JPS446570Y1 (en) * | 1967-10-18 | 1969-03-11 | ||
| US3625523A (en) * | 1970-02-13 | 1971-12-07 | Waukesha Bearings Corp | Aft sealing assembly for stern tubes |
| AU482420B2 (en) * | 1972-04-10 | 1974-10-10 | Brake And Clutch Industries Australia Pty. Ltd. | IMPROVED FLUID SEAL Specification |
| JPS5552135Y2 (en) * | 1974-12-18 | 1980-12-03 | ||
| DE7902243U1 (en) * | 1979-01-27 | 1979-12-06 | Howaldtswerke-Deutsche Werft Ag Hamburg Und Kiel, 2300 Kiel | HYDRODYNAMIC LIP SEAL |
| DE3307470C1 (en) * | 1983-03-03 | 1991-03-28 | Fa. Carl Freudenberg, 6940 Weinheim | Sealing ring |
| JPS60185764U (en) * | 1984-05-21 | 1985-12-09 | エヌオーケー株式会社 | oil seal |
| DE3524461A1 (en) * | 1985-07-09 | 1987-01-22 | Kaco Gmbh Co | RADIAL SHAFT SEAL |
| DE3526424C1 (en) * | 1985-07-24 | 1987-02-12 | Freudenberg Carl Fa | Radial shaft seal and process for its manufacture |
| GB2179408A (en) * | 1985-08-20 | 1987-03-04 | Angus George Co Ltd | Oil seal with pumping action |
| DE3612330C1 (en) * | 1986-04-11 | 1987-06-04 | Freudenberg Carl Fa | Sealing ring |
| AU7741487A (en) * | 1987-08-25 | 1989-03-02 | Atsugi Motor Parts Company, Limited | Seal structure for rotary body and vane-type rotary compressor employing the same |
-
1987
- 1987-12-11 DE DE3742080A patent/DE3742080C2/en not_active Expired - Lifetime
-
1988
- 1988-12-05 AU AU26576/88A patent/AU609910B2/en not_active Expired
- 1988-12-06 GB GB8828438A patent/GB2213540B/en not_active Expired - Lifetime
- 1988-12-06 JP JP63308705A patent/JPH0814321B2/en not_active Expired - Lifetime
- 1988-12-09 SE SE8804472A patent/SE470140B/en not_active IP Right Cessation
- 1988-12-09 NL NL8803034A patent/NL193289C/en active Search and Examination
- 1988-12-10 CN CN88109215A patent/CN1015817B/en not_active Expired
- 1988-12-10 KR KR1019880016424A patent/KR0121287B1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| CN1035711A (en) | 1989-09-20 |
| SE470140B (en) | 1993-11-15 |
| JPH01193466A (en) | 1989-08-03 |
| SE8804472D0 (en) | 1988-12-09 |
| DE3742080C2 (en) | 1994-07-07 |
| GB8828438D0 (en) | 1989-01-05 |
| KR0121287B1 (en) | 1997-12-26 |
| NL8803034A (en) | 1989-07-03 |
| GB2213540B (en) | 1991-10-16 |
| NL193289B (en) | 1999-01-04 |
| CN1015817B (en) | 1992-03-11 |
| NL193289C (en) | 1999-05-06 |
| AU2657688A (en) | 1989-06-15 |
| DE3742080A1 (en) | 1989-06-22 |
| AU609910B2 (en) | 1991-05-09 |
| GB2213540A (en) | 1989-08-16 |
| SE8804472L (en) | 1989-06-12 |
| KR890010436A (en) | 1989-08-08 |
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