JPS5899561A - Method of forming slide surface of seat ring or seal ring in mechanical seal - Google Patents
Method of forming slide surface of seat ring or seal ring in mechanical sealInfo
- Publication number
- JPS5899561A JPS5899561A JP19439681A JP19439681A JPS5899561A JP S5899561 A JPS5899561 A JP S5899561A JP 19439681 A JP19439681 A JP 19439681A JP 19439681 A JP19439681 A JP 19439681A JP S5899561 A JPS5899561 A JP S5899561A
- Authority
- JP
- Japan
- Prior art keywords
- ring
- seal
- seal ring
- sliding contact
- sealing
- 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.)
- Granted
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
- F16J15/34—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
- F16J15/3404—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member and characterised by parts or details relating to lubrication, cooling or venting of the seal
- F16J15/3408—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member and characterised by parts or details relating to lubrication, cooling or venting of the seal at least one ring having an uneven slipping surface
- F16J15/3412—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member and characterised by parts or details relating to lubrication, cooling or venting of the seal at least one ring having an uneven slipping surface with cavities
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mechanical Sealing (AREA)
Abstract
Description
【発明の詳細な説明】
本発明はメカニカルシールにおけるシートリングもしく
はシールリングの摺接面形成方法に係り、さらに詳しく
は上記摺接面に所要の方向性を有する密封用々らびに潤
滑用の細溝を形成するシートリングもしくはシールリン
グの摺接面形成方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for forming a sliding surface of a seat ring or a seal ring in a mechanical seal. The present invention relates to a method for forming a sliding surface of a seat ring or seal ring that forms a groove.
従来、メカニカルシールにおいてその漏洩量を減少させ
るため、該メカニカルシールを構成するシートリングお
よびシールリングの摺接面に関しては、該摺接面の面精
度を向上させ、摺接面間に介在する流体膜を薄くする方
法、または該摺接面にスパイラル溝を形成してそのボン
ピング効果によって流体膜を薄くする方法が広く知られ
ている。Conventionally, in order to reduce the amount of leakage in mechanical seals, the surface accuracy of the sliding surfaces of the seat ring and seal ring that make up the mechanical seal has been improved, and the fluid intervening between the sliding surfaces has been improved. A method of thinning a fluid film, or a method of forming a spiral groove on the sliding surface and using the pumping effect thereof to thin the fluid film is widely known.
しかしながら、上記従来技術は画法とも漏洩量を改善す
ることによって摺動発熱が増大し、摺接面に熱変形、摩
耗等の熱劣化が発生し、さらには該摺接面がクラツラ、
発泡等密封破壊を生ずる場合もあシ、結果的に耐久密封
性が低下する欠点を有している。したがってこの相反す
る密封性と摺動発熱を制御することは従来きわめて困難
とされ、上記シートリングおよびシールリングに耐熱摺
動材を採用して安全率を高めるか、または漏洩量の多少
の増加を許容して対処してきたのが現状である。またこ
れら従来のメカニカルシールにおけるシートリングもし
くはシールリングの摺接面製作方法としては、従来、ラ
ッピングによる方法、研削による方法、旋削による方法
および型成形による方法が広く採られておシ、さらに上
記各方法を施こした後、ポリシング、パフ、機械的また
は化学的面荒らしなどが施こされている。しかしながら
かかる従来方法は何れもその目的、すなわち耐久密封性
の維持に対しである程度の効果は奏するものの、摺接面
における密封作用面と潤滑作用面の分担比までは明確に
できず、漏洩量と発熱量の制御を自在とするには至って
いない。However, in the conventional technology described above, by improving the amount of leakage, heat generation due to sliding increases, thermal deterioration such as thermal deformation and abrasion occurs on the sliding contact surface, and furthermore, the sliding contact surface becomes unstable.
It also has the disadvantage that sealing failure such as foaming may occur, resulting in a decrease in durable sealing performance. Therefore, it has traditionally been extremely difficult to control the conflicting sealing properties and heat generation caused by sliding. Therefore, it is necessary to increase the safety factor by using heat-resistant sliding materials for the seat ring and seal ring, or to increase the leakage amount to some extent. The current situation is that it has been tolerated and dealt with. In addition, as methods for manufacturing the sliding surface of the seat ring or seal ring in these conventional mechanical seals, wrapping methods, grinding methods, turning methods, and molding methods have been widely adopted. After applying the method, polishing, puffing, mechanical or chemical surface roughening, etc. are performed. However, although all of these conventional methods are effective to some extent for their purpose, that is, maintaining durable sealing, they do not clarify the sharing ratio of the sealing surface and the lubricating surface on the sliding surface, and the amount of leakage and It has not yet been possible to freely control the amount of heat generated.
本考案は以上の点に鑑み、研削加工法もしくはラップ加
工法によって平面状に形成した、メカニカルシールを構
成するシートリングもしくはシールリングの摺接面に、
その両端を上記摺接面の外周端および内周端に至到させ
、かつその方向を相対的回転方向の前方ならびに後方に
傾斜させる所ｌ Ａ ）
票数の密封用ならびに潤滑用の細溝をけがき加工によっ
て形成し、その後上記摺接面を磨き加工して仕上げする
方法によって密封性と摺動発熱双方の制御を可能とし、
耐久密封性に優れたメカニカルシールを製作できるメカ
ニカルシールにおけるシートリングもしくはシールリン
グの摺接面形成方法を提供せんとするものである。In view of the above points, the present invention has been developed to provide a sliding contact surface of a seat ring or a seal ring that constitutes a mechanical seal, which is formed into a flat shape by a grinding method or a lapping method.
A) Where both ends reach the outer peripheral end and inner peripheral end of the sliding surface, and the direction thereof is inclined forward and backward in the direction of relative rotation. It is possible to control both the sealing performance and the heat generated by sliding by forming it by carving and then polishing and finishing the sliding surface.
It is an object of the present invention to provide a method for forming a sliding surface of a seat ring or a seal ring in a mechanical seal that can produce a mechanical seal with excellent sealing durability.
以下、本発明メカニカルクールにおけるシートリングも
しくはシールリングの摺接面形成方法を説明するにその
前提となる細溝について第１図および第２図にしたがっ
て説明すると、図中（１）は要部を拡大して表わした外
部加圧型のメカニカルシールであって、ハウジング（２
）に固定されたシートリング（３）と、該シートリング
（３）に挿通される回転軸（４）に固定されるとともに
、該回転軸４ ン
（４）に従動するシールリング（５）の摺接によって当
該メカニカルシール（１）の外周側に密封された流体（
Ａ）の漏洩を阻止せんとするものであって、上記シール
リング（５）の摺接面（５ａ）には、該シールリング（
５）の回転方向（矢印Ｂ）に対して摺接面（５ａ）直径
方向の後方に傾斜する細溝（６）（６）・・・および同
じく前方に傾斜する細溝（７Ｘ７） ＠・・が、その両
端を上記摺接面（５ａ）の外周端（５喜）ならびに内周
端（５ｃ）に至到するとともに相互に交叉するように設
けられる。該細溝（６）（６）・・・（７）（７）・・
・は前方に傾斜する細溝（７Ｘ７）・・・が潤滑流体膜
を形成する機能（潤滑用）を奏し、一方、後方に傾斜す
る細溝（６）（６）・・・がポンピング作用によって密
封する機能（密封用）を奏するもので、密封流体（Ａ）
は、第３図に示すごとく、摺接面（５α）の回転方向お
よびその粘性作用によって前方傾斜（７Ｘ７）・・・内
に吸入され、該細溝（７）（７）・・・内に保留されつ
つ移動しく矢印Ｃ方向）、潤滑流体膜を形成して上記シ
ールリング（５）の摺接面（５ｃＬ）とシートリング（
３）の摺接面（３，）間を潤滑する。しかして、上記前
方傾斜の細溝（７）（７）・・・に沿って移動した密封
流体（Ａ）は、該細溝（７Ｘ７）・・・と上記後方傾斜
の細溝（６Ｘ６）・・拳が交叉する個所において、該後
方傾斜の細溝（６Ｘ６）・・・に移行し、摺接面（５α
）の内周端（５ｃ）に至ることなく吸入側（外周端（井
）側）へ排出される。したがってシールリング（５）の
摺接面（５４）に形成される上記細溝（６）（６）・・
・（７）（７）・Φ・は摺接面（３４Ｘ５．、）間に吸
入された流体量を上回る排出能力を有するように、すな
わち後方傾斜の細溝（６）（６）・噛・の排出能力が前
方傾斜の細溝（７）（７）・・・の吸入能力を上回るよ
うに形成される。この場合、尚該メカニカルシール（１
）の停止時における漏洩を完全に止めるためには細溝（
６）（６）・・・（７）（７）・・・からの流出を阻止
する必要があシ、そのためには該細溝（６Ｘ６）・・・
（７）（７）・・・を０．２〜０．７μ以内に仕上げる
ことによシ目的を達する。またある程度の漏洩を許容す
る場合、または停止時間が短い場合、１幾器において停
止時、流体がメカニカルシール部に来ない場合、停止時
に圧力がなくなる場合には細溝（６）（６）・・Φ（７
）（７）・０は１．０〜３μまでは許容され、この範囲
であれば通常のシール効果を得ることができ、細溝（６
）（６）・・・（７）（７）・・拳はその目的によって
０．２〜３μの範囲にコントロールされる。Below, in order to explain the method of forming the sliding surface of a seat ring or seal ring in the mechanical cool of the present invention, the thin grooves that are the premise of the method will be explained according to FIGS. 1 and 2. (1) in the figure shows the main part. An enlarged view of an externally pressurized mechanical seal, showing the housing (2
), and a seal ring (5) that is fixed to a rotating shaft (4) inserted through the seat ring (3) and driven by the rotating shaft (4). A fluid (
A) is intended to prevent leakage of the seal ring (5), and the sliding surface (5a) of the seal ring (5) is
5) With respect to the rotational direction (arrow B), the sliding surface (5a) has narrow grooves (6) (6) that slope backward in the diametrical direction, and thin grooves (7X7) that also slope forward (7x7) @... is provided so that its both ends reach the outer peripheral end (5) and the inner peripheral end (5c) of the sliding contact surface (5a) and intersect with each other. The narrow groove (6) (6)...(7)(7)...
・The narrow grooves (7x7) that slope forward serve the function of forming a lubricating fluid film (for lubrication), while the narrow grooves (6) (6) that slope backward form a pumping action. Something that performs a sealing function (for sealing), and is a sealing fluid (A)
As shown in Fig. 3, is sucked into the forward slope (7 While being held and moving in the direction of arrow C), a lubricating fluid film is formed between the sliding surface (5cL) of the seal ring (5) and the seat ring (
3) Lubricate between the sliding surfaces (3,). Therefore, the sealing fluid (A) that has moved along the forward-sloping narrow grooves (7), (7)..., moves along the narrow grooves (7X7)... and the backward-sloping narrow grooves (6X6).・At the point where the fists intersect, it transitions to the rear-sloping narrow groove (6x6)... and the sliding surface (5α
) is discharged to the suction side (outer peripheral end (well) side) without reaching the inner peripheral end (5c). Therefore, the narrow grooves (6) (6) formed on the sliding surface (54) of the seal ring (5)...
・(7)(7)・Φ・ has a discharge capacity that exceeds the amount of fluid sucked between the sliding surfaces (34×5. is formed so that its discharge capacity exceeds the suction capacity of the forward-sloping narrow grooves (7), (7), and so on. In this case, the mechanical seal (1
) In order to completely stop leakage when the pipe is stopped, a narrow groove (
6) It is necessary to prevent outflow from (6)...(7)(7)..., and for that purpose, the narrow groove (6X6)...
(7) The purpose is achieved by finishing (7)... within 0.2 to 0.7μ. In addition, if a certain amount of leakage is allowed, or if the stoppage time is short, if the fluid does not reach the mechanical seal part when the device is stopped, or if there is no pressure when the device is stopped, the narrow groove (6) (6)・Φ(7
)(7)・0 is permissible from 1.0 to 3μ, and within this range a normal sealing effect can be obtained, and the narrow groove (6
)(6)...(7)(7)...The fist is controlled within the range of 0.2 to 3μ depending on the purpose.
本発明メカニカルシールにおけるシートリング（７）
もしくはシールリングの摺接面形成方法は以上のように
コントロールを要する細溝（６Ｘ６）・・・（７）（７
）・・・の形成を容易にするものであって、その方法は
まず摺接面（５ａ）に研削加工もしくはラップ加工を施
こしてこれを平板に形成した後、該摺接面（５，Ｌ）に
前記細溝（６）（６）・・・（７Ｘ７）・・・をけがき
加工によって形成し、その後摺接面（５ａ）に磨き加工
を施こして仕上げするものである。したがって本発明の
形成方法によれば任意の形状（構成数を含む）の細溝（
６）（６）・・・（７Ｘ７）・・・をきわめて精度に形
成することができ、第４図および第５図に示すごとくメ
カニカルシール（１）に要求される漏洩量と耐久性のバ
ランスを、後方傾斜の細溝（６Ｘ６）・・・と前方傾斜
の細溝（７Ｘ７）・・・の構成数を適宜選択することに
よシ、常時最良の耐久密封性を保持することが可能とな
る。また第６図は上記細溝（６）（６）・・・（７）（
７）・・・の構成数と漏洩量の関係を示す実験グラフで
あって、両者が相関関係にあることを明確に示している
。該実験は後方傾斜の細溝（６Ｘ６）・・・の構成数を
１５本に一定しく第５図に示す）、前方傾斜の細溝（７
）（７）・φ・の構成数を順次変更したものであシ、軸
回転数は５，０００ ｒｐｍ、液圧は６Ｋｇ／、Ｇであ
った。また第７図は本発明の形成方法による細溝（６Ｘ
６）・・・（７Ｘ７）・・・の断面を示すもので、けが
き加工法によって形成される細溝（６）（６）・・・（
７）（７）・・・はその両縁に膨出部（６，）・・・（
７、）・・・を有し、細溝（６Ｘ６）・・・（７Ｘ７）
・・・内に流体（Ａ）を保留し易くなるとともに一旦細
溝（７）（７）・・・から溢れ出た流体（Ａ）の潤滑流
体膜の形成を容易にすることができる。The seat ring (7) in the mechanical seal of the present invention or the method of forming the sliding surface of the seal ring has the narrow groove (6×6) that requires control as described above (7) (7)
)..., and the method is to first grind or lap the sliding contact surface (5a) to form it into a flat plate, and then form the sliding contact surface (5, The narrow grooves (6), (6), (7X7), etc. are formed in the groove L) by scribing, and then the sliding surface (5a) is polished and finished. Therefore, according to the forming method of the present invention, thin grooves of any shape (including the number of configurations) (
6) (6)...(7X7)... can be formed with extreme precision, achieving the balance between leakage amount and durability required for mechanical seals (1) as shown in Figures 4 and 5. By appropriately selecting the number of rear-sloping narrow grooves (6 x 6) and front-sloping narrow grooves (7 x 7), it is possible to maintain the best durable sealing performance at all times. Become. In addition, Fig. 6 shows the narrow grooves (6) (6)... (7) (
7)... is an experimental graph showing the relationship between the number of configurations and the amount of leakage, clearly showing that there is a correlation between the two. In this experiment, the number of backward-sloping narrow grooves (6×6) was kept at 15 (as shown in Figure 5), the forward-sloping narrow groove (7
)(7)・φ・The number of components was changed sequentially, the shaft rotation speed was 5,000 rpm, and the hydraulic pressure was 6 kg/G. Further, FIG. 7 shows a narrow groove (6X
6)...(7X7)... shows the cross section of the thin grooves (6) (6)...(
7) (7)... has bulges (6,)...(
7.)... has narrow grooves (6X6)...(7X7)
It becomes easier to retain the fluid (A) within the grooves (7), and it also becomes easier to form a lubricating fluid film of the fluid (A) once overflowing from the narrow grooves (7) (7).
女お、上記説明においてはメカニカルシール（１）を外
部加圧型とし、また該メカニカルシール（１）のシール
リング（５）の摺接面（５ａ）に細溝（６）（６）・・
・（７Ｘ７）−・・を形成したが、本発明はこれに限ら
ずメカニカルシール（１）を内部加圧型とし、またメカ
ニカルシール（１）のシートリング（３）の摺接面（３
，）に細溝（６）（６）・・・（７Ｘ７）・・拳を形成
することとしても良い。但し、前者の場合は前方傾斜の
細溝（７Ｘ７）・・・が密封効果を奏し、後方傾斜の細
溝（６）（６）・・・が潤滑効果を奏するので、形成に
あたってその所要構成数は逆転する。また図面において
細溝（６Ｘ６）・・・（７）（７）・・・は直線状に示
したが、曲線状にあっても良く、さらに直線状および曲
線状の混合としても良い。In the above explanation, the mechanical seal (1) is of the external pressure type, and the sliding surface (5a) of the seal ring (5) of the mechanical seal (1) has thin grooves (6) (6)...
・(7
, ) may be formed with narrow grooves (6) (6)...(7X7)...a fist. However, in the case of the former, the forward-sloping narrow grooves (7 x 7)... have a sealing effect, and the backward-sloping narrow grooves (6) (6)... have a lubricating effect, so the number of grooves required for formation is is reversed. Further, although the narrow grooves (6×6)...(7)(7)... are shown in a straight line in the drawings, they may be in a curved shape, or may be a mixture of straight and curved shapes.
以上のように、本発明はメカニカルシールを構成するシ
ートリングもしくはシールリングの摺接面にその両端を
摺接面の外周端および内周端に主列させ、かつその方向
を相対的回転方向の前方ならびに後方に傾斜させる所要
数の密封用ならびに潤滑用の細溝を、あらかじめ研削加
工法もしくはラップ加工法によって平板状に形成した摺
接面にけがき加工によって形成し、その後肢摺接面を磨
き加工によって仕上げることとしたため、これによって
密封性と摺動発熱の双方の制御を自在とし、耐久密封性
に俊れたメカニカルシールを製作することができる。ま
た、本発明によれば同一形状の細溝を有するメカニカル
シールを容易かつ大量に製作でき、本発明の奏する効果
にはきわめて犬なるものがある。As described above, the present invention provides a sliding contact surface of a seat ring or a seal ring constituting a mechanical seal, in which both ends thereof are aligned with the outer peripheral end and the inner peripheral end of the sliding contact surface, and the direction thereof is aligned with the relative rotation direction. The required number of narrow grooves for sealing and lubrication, which are inclined forward and backward, are formed by scribing on the sliding contact surface that has been previously formed into a flat plate by grinding or lapping. Since we decided to finish it by polishing, we can freely control both sealing performance and sliding heat generation, making it possible to manufacture a mechanical seal with excellent sealing durability and durability. Further, according to the present invention, mechanical seals having thin grooves of the same shape can be easily manufactured in large quantities, and the effects of the present invention are extremely unique.
’ １１ノ
図面は本発明に係る形成方法によって製作されるメカニ
カルシールの一実施例を示すもので、第１図はメカニカ
ルシールの取シ付は状態を示す要部断面図、第２図、第
４図および第５図はシールリングの摺接面の正面図、第
３図は流体の移動状態を示す同要部拡大図、第６図は細
溝の構成数と漏洩量の関係を示す実験グラフ、第７図は
細溝の拡大断面図である。
（１）メカニカルシール （２）ノ１ウジング（３）
シートリング （３ｃＬ）（５ｃＬ）摺接面（４）回
転軸 （５）シールリング
（５ｂ）外周端 （５Ｃ）内周端
（６Ｘ７）；ｍ溝 （６，）（７ａ）膨出部特許出願
人 イーグル工業株式会社
Ｌ １２ （
第１図
第２図
第８図
第５図
第４図
第６図
３ ６ ９ １２ １５ １８
ｈ構（倦傾斜＞＝ｖＭ−ｓ市（本）' Drawing 11 shows an embodiment of a mechanical seal manufactured by the forming method according to the present invention. Figures 4 and 5 are front views of the sliding surface of the seal ring, Figure 3 is an enlarged view of the same essential parts showing the state of fluid movement, and Figure 6 is an experiment showing the relationship between the number of narrow grooves and the amount of leakage. The graph and FIG. 7 are enlarged cross-sectional views of the narrow grooves. (1) Mechanical seal (2) No. 1 Uzing (3)
Seat ring (3cL) (5cL) Sliding surface (4) Rotating shaft (5) Seal ring (5b) Outer edge (5C) Inner edge (6X7); m groove (6,) (7a) Swelling part Patent application applied Person Eagle Industry Co., Ltd. L 12 (Fig. 1 Fig. 2 Fig. 8 Fig. 5 Fig. 4 Fig. 6 Fig. 3 6 9 12 15 18
Claims (1)
密封流体の漏洩を阻止するメカニカルシールの上記シー
トリングもしくはシールリングの摺接面の製作において
、研削加工法もしくはラップ加工法にて平面状に形成し
た上記摺接面に、その両端を上記摺接面の外周端および
内周端に全判させ、かつその方向を相対的回転方向の前
方ならびに後方に傾斜させる所要数の密封用ならびに潤
滑用の細溝をけがき加工によって形成し、その後（１） 上記摺接面を磨き加工して仕上げることを特徴とするメ
カニカルシールにおけるシートリングもしくはシールリ
ングの摺接面形成方法。[Claims] In manufacturing the sliding contact surface of the seat ring or the seal ring of the mechanical seal that prevents leakage of sealed fluid by sliding contact between the sliding contact surfaces of the seat ring and the seal ring, a grinding method or a lapping method is used. A required number of screws are provided on the sliding contact surface formed into a flat shape by a method, with both ends of the sliding contact surface fully aligned with the outer and inner peripheral ends of the sliding contact surface, and whose directions are inclined forward and backward in the relative rotation direction. A method for forming a sliding contact surface of a seat ring or a seal ring in a mechanical seal, characterized in that narrow grooves for sealing and lubrication are formed by scribing, and then (1) the sliding contact surface is polished and finished.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19439681A JPS5899561A (en) | 1981-12-04 | 1981-12-04 | Method of forming slide surface of seat ring or seal ring in mechanical seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19439681A JPS5899561A (en) | 1981-12-04 | 1981-12-04 | Method of forming slide surface of seat ring or seal ring in mechanical seal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5899561A true JPS5899561A (en) | 1983-06-13 |
| JPH025951B2 JPH025951B2 (en) | 1990-02-06 |
Family
ID=16323892
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19439681A Granted JPS5899561A (en) | 1981-12-04 | 1981-12-04 | Method of forming slide surface of seat ring or seal ring in mechanical seal |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5899561A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105987175A (en) * | 2016-08-05 | 2016-10-05 | 江西省科学院应用物理研究所 | Mechanical sealing structure with combination of various holes and three-dimensional snowflake-shaped grooves |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB888198A (en) * | 1958-06-13 | 1962-01-31 | Goetzewerke | Shaft seal |
| US3973781A (en) * | 1972-05-23 | 1976-08-10 | Veb Gummikombinat Berlin | Self-lubricating seal |
| JPS5297059A (en) * | 1976-02-06 | 1977-08-15 | Danfoss As | Pressure ring with slide seal |
-
1981
- 1981-12-04 JP JP19439681A patent/JPS5899561A/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB888198A (en) * | 1958-06-13 | 1962-01-31 | Goetzewerke | Shaft seal |
| US3973781A (en) * | 1972-05-23 | 1976-08-10 | Veb Gummikombinat Berlin | Self-lubricating seal |
| JPS5297059A (en) * | 1976-02-06 | 1977-08-15 | Danfoss As | Pressure ring with slide seal |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105987175A (en) * | 2016-08-05 | 2016-10-05 | 江西省科学院应用物理研究所 | Mechanical sealing structure with combination of various holes and three-dimensional snowflake-shaped grooves |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH025951B2 (en) | 1990-02-06 |
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