JPH0129336Y2 - - Google Patents
Info
- Publication number
- JPH0129336Y2 JPH0129336Y2 JP699484U JP699484U JPH0129336Y2 JP H0129336 Y2 JPH0129336 Y2 JP H0129336Y2 JP 699484 U JP699484 U JP 699484U JP 699484 U JP699484 U JP 699484U JP H0129336 Y2 JPH0129336 Y2 JP H0129336Y2
- Authority
- JP
- Japan
- Prior art keywords
- ring
- cross
- section
- valve
- valve body
- 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
- 238000007789 sealing Methods 0.000 claims description 13
- 230000007704 transition Effects 0.000 claims description 3
- 229920001971 elastomer Polymers 0.000 description 14
- 239000005060 rubber Substances 0.000 description 14
- 235000013372 meat Nutrition 0.000 description 5
- 238000002788 crimping Methods 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
Landscapes
- Sliding Valves (AREA)
- Sealing Devices (AREA)
Description
【考案の詳細な説明】
「産業上の利用分野」
この考案は、仕切弁における上下に摺動する弁
体のシール面に装着するＯリングに関するもので
ある。[Detailed Description of the Invention] "Industrial Application Field" This invention relates to an O-ring that is attached to the sealing surface of a valve body that slides up and down in a gate valve.
「従来の技術、考案が解決せんとする問題点」
一般に、仕切弁に設けた仕切開口内を上下に摺
動する摺動弁体は、仕切弁本体の環状弁座に直接
金属面接触によりシールしているため、シール性
が悪く閉弁時に漏水する欠点がある。``Problems to be solved by conventional technology and ideas'' In general, a sliding valve body that slides up and down in a partition opening provided in a gate valve is sealed by direct metal surface contact with the annular valve seat of the gate valve body. Because of this, there is a drawback that the sealing performance is poor and water leaks when the valve is closed.
そこで、出願人らはシール面にＯリングを装着
することでシール性を向上させることを試みた
が、このＯリングとして従来一般的な横断面を一
様な真円形に成形したものを用いて試験したとこ
ろ、この従来のＯリングでは問題があることが分
かつた。 Therefore, the applicants attempted to improve the sealing performance by attaching an O-ring to the sealing surface. Upon testing, this conventional O-ring was found to be problematic.
即ち、上記従来の横断面が一様な真円形のＯリ
ングでは、その表面側が摺動弁体のシール面に一
様に突出するため、閉弁時に摺動弁体が下降する
とき、Ｏリングがその表面側全体を弁座面に摩擦
接触しながら圧接摺動し、表面側のゴム肉を上方
に押し上げるように圧縮変形することになり、摺
動弁体の摺動方向と交差状をなすＯリングの上端
部及び下端部の近辺においては横断面の上側に押
し上げられて環状溝から過剰にハミ出したゴム肉
が摺動弁体と弁座間の隙間に噛み込み易く、Ｏリ
ングを損傷し易いという問題があり、またＯリン
グの左右両側部においてはゴム肉が上方に向かつ
て押し出され、ゴム肉が押し込まれるＯリングの
上端部ほど圧着が大で、ゴム肉が引き押ばされる
両側中間部付近の圧着が小となるため、Ｏリング
全体としてシール性が不均一になると共に、上部
ほど摩耗し易いという問題があることが分かつ
た。 That is, in the conventional perfect circular O-ring with a uniform cross section, the front side of the O-ring uniformly protrudes onto the sealing surface of the sliding valve body, so when the sliding valve body descends when the valve is closed, the O-ring The entire surface side of the valve slides in frictional contact with the valve seat surface, compressing and deforming the rubber flesh on the surface side upwards, forming a shape that intersects with the sliding direction of the sliding valve body. In the vicinity of the upper and lower ends of the O-ring, the rubber meat pushed up above the cross section and excessively protruding from the annular groove tends to get caught in the gap between the sliding valve body and the valve seat, damaging the O-ring. There is also the problem that the rubber flesh is pushed upward on both the left and right sides of the O-ring, and the pressure is greater at the upper end of the O-ring where the rubber flesh is pushed; It was found that since the pressure bonding near the middle portion is small, the sealing performance of the O-ring as a whole becomes uneven, and there is a problem in that the upper part is more likely to wear.
「問題点を解決するための手段」
この考案は前記従来の課題を解決するために、
Ｏリングを仕切弁の摺動弁体のシール面に装着し
た状態における垂直方向の中心線上の部分の横断
面を縦長楕円形に成形し、この楕円形断面の部分
から水平方向の中心線上の部分にかけて楕円の長
径を直径とする真円形断面形状に漸次移行するよ
うに成形することにより、摺動弁体の摺動方向と
交差状をなすＯリングの縦長楕円断面をなす上下
部における環状溝からの突出高さを真円形断面を
なす両側中間部よりも若干小さくし、仕切弁の閉
弁時に環状溝からのゴム肉の過剰なハミ出しをな
くして摺動弁体と弁座間の隙間に噛み込むことに
よる損傷を確実に防止すると共に、摺動弁体の下
降に伴つて弁座面との摩擦接触によりＯリング上
下部の表面側のゴム肉をその横断面の上方に押し
上げようとするとき、縦長楕円をその中心回りに
回動して当初の楕円短径側の円弧表面との接触か
ら長径側寄りの円弧表面との接触に移行させ、こ
れによつてＯリング上下部の密着シール性を確保
し、更に環状溝からの突出高さが若干大きい真円
形断面の両側中間部の圧着性をその上下部よりも
予め高めておいて、ゴム肉が上方に向かつて押し
出されることによる圧着性の減少をカバーし、全
体として均一な圧着シールを可能としたＯリング
を提案するものである。"Means for solving the problem" This invention aims to solve the above-mentioned conventional problem.
When the O-ring is attached to the sealing surface of the sliding valve body of the gate valve, the cross section of the part on the vertical center line is formed into a vertically elongated oval shape, and the part on the horizontal center line from this oval cross section is formed. By forming the shape so that the cross-sectional shape gradually changes to a perfect circular cross-sectional shape with the long axis of the ellipse as the diameter, the annular grooves in the upper and lower parts of the O-ring, which have a longitudinally elongated elliptical cross section that intersects the sliding direction of the sliding valve body, are formed. The protruding height of the gate valve is made slightly smaller than the middle part on both sides, which has a perfect circular cross section, to eliminate excessive protrusion of the rubber meat from the annular groove when the gate valve is closed, and to fit into the gap between the sliding valve body and the valve seat. In addition to reliably preventing damage caused by contact with the O-ring, as the sliding valve element descends, frictional contact with the valve seat surface causes the rubber on the surface side of the upper and lower O-rings to be pushed up above its cross section. , the vertically elongated ellipse is rotated around its center to shift from contact with the arcuate surface on the shorter axis side of the ellipse to contact with the arcuate surface on the longer axis side, thereby improving the tight sealing properties of the upper and lower parts of the O-ring. In addition, the crimpability of the intermediate portions on both sides of the perfect circular cross section, which have a slightly larger protruding height from the annular groove, is made higher than that of the upper and lower parts, so that the crimpability is improved by pushing the rubber flesh upward. This paper proposes an O-ring that can compensate for the decrease in the amount of water and achieve a uniform crimp seal as a whole.
「実施例」
以下この考案を図面に示す実施例について説明
すると、合成ゴム等で環状に加硫成形したＯリン
グ本体Ｒは、これを垂直に起立させた状態におい
て垂直方向の中心線Ｙ−Ｙ上の上下部分が横断面
楕円形をなす楕円形部１ａ，１ｂに成形され、ま
た水平方向の中心線Ｘ−Ｘ上の左右部分が楕円形
部１ａ，１ｂの楕円の長径を直径とする横断面真
円形をなす真円形部２ａ，２ｂに成形され、この
楕円形部１ａ，１ｂから真円形部２ａ，２ｂにか
けてその間の漸変部分３ａ，３ｂの横断面が楕円
形から真円形に漸次移行するように成形されてい
る。``Example'' Below, an example of this invention shown in the drawings will be described. When the O-ring main body R is annularly vulcanized and molded from synthetic rubber or the like, when it is vertically erected, The upper and lower parts of the upper part are formed into elliptical parts 1a and 1b having an elliptical cross section, and the left and right parts on the horizontal center line The cross section of the gradually changing portions 3a, 3b gradually changes from the elliptical part 1a, 1b to the perfect circular part 2a, 2b from the elliptical part 1a, 1b to the perfect circular part. It is shaped to.
このように構成したＯリング本体Ｒは、第４図
及び第５図に示す仕切弁の弁シールに用いられる
もので、仕切弁における左右の流体通路４，５間
に設けた仕切開口に垂直方向に摺動自在に挿嵌し
た摺動弁体６には、その両シール面の周囲に横断
面溝型又は蟻溝型の環状溝７，８が形成され、そ
の内部にＯリング本体Ｒがその楕円形部１ａ，１
ｂが垂直方向に位置するように装着され、閉弁時
において環状溝７，８から突出する表面側を仕切
開口両側の環状の弁座９，１０に摺接しながら圧
着してシールするようになつている。 The O-ring main body R configured in this way is used for the valve seal of the gate valve shown in FIGS. The sliding valve body 6, which is slidably inserted into the valve body 6, has annular grooves 7 and 8 of a cross-sectional groove type or a dovetail groove type formed around both sealing surfaces, and the O-ring main body R is inserted inside the annular grooves 7 and 8. Oval part 1a, 1
b is installed so that it is positioned vertically, and when the valve is closed, the surface side protruding from the annular grooves 7 and 8 slides into contact with the annular valve seats 9 and 10 on both sides of the partition opening and is crimped and sealed. ing.
「考案の作用」
以上の構成において、摺動弁体６を上昇させて
開弁した状態から、ハンドル１１によりスクリユ
ースピンドル１２を閉弁方向に回転し、摺動弁体
６をその上部に設けた雌ねじ体１３を介して下降
させると、摺動弁体６の摺動方向とほぼ並行状を
なし、かつ環状溝７，８からの突出高さが僅かに
高いＯリング本体Ｒの真円形部２ａ，２ｂ及びそ
の上下近辺部のほぼ円形に近い断面の両側中間部
が弁座９，１０に摩擦接触し、この部分の表面側
のゴム肉を第６図のＤ−Ｄ方向の上方に押し上げ
ながら摺接すると共に、その直後に摺動弁体６の
摺動方向と交差状をなすＯリング本体Ｒの上下部
における楕円形断面に移行した部分及び楕円形部
１ａ，１ｂが弁座９，１０に摩擦接触し、これに
よつてそれらの表面側のゴム肉をその横断面の上
側（第６図のＣ−Ｃ方向上方）に押し上げなが
ら、第７図の矢印に示すように縦長楕円をその中
心回りに回動（ねじれ）して当初の楕円短径側の
円弧表面との接触から長径側寄りの円弧表面との
接触に移行させ、これによつてＯリング本体Ｒの
上下部表面を弁座９，１０に圧着する。"Operation of the invention" In the above structure, the screw spindle 12 is rotated in the valve closing direction by the handle 11 from the state in which the sliding valve body 6 is raised and the valve is opened, and the sliding valve body 6 is mounted on the upper part of the screw spindle 12. When the O-ring body R is lowered through the female threaded body 13, the perfect circular part of the O-ring body R is almost parallel to the sliding direction of the sliding valve body 6 and has a slightly higher protruding height from the annular grooves 7 and 8. 2a, 2b and the intermediate portions on both sides of the nearly circular cross sections near the upper and lower portions come into frictional contact with the valve seats 9, 10, and the rubber flesh on the surface side of these portions is pushed upward in the direction D-D in Fig. 6. Immediately after that, the upper and lower parts of the O-ring main body R, which are intersecting with the sliding direction of the sliding valve body 6, transition to an elliptical cross section and the elliptical parts 1a and 1b are connected to the valve seats 9 and 10. This causes the rubber flesh on the surface side to be pushed upwards in the cross section (in the C-C direction in Fig. 6), and the vertically elongated ellipse is shaped as shown by the arrow in Fig. 7. Rotating (twisting) around the center, the initial contact with the arcuate surface on the shorter diameter side of the ellipse is shifted to contact with the arcuate surface on the longer diameter side, thereby causing the upper and lower surfaces of the O-ring body R to become valve contact. Crimp the seats 9 and 10.
このように、弁座９，１０に対してＯリング本
体Ｒの真円形又はそれに近い断面の両側中間部
は、楕円形部１ａ，１ｂよりも僅かに突出高さが
高いが、閉弁時に表面側のゴム肉を上方に押し上
げながら摺接するため、その部分の弁座９，１０
に対する圧着力はゴム肉が押し込まれて圧着力が
増した上下部とほぼ均等化され、またＯリング本
体Ｒの上下部における楕円形部１ａ，１ｂ及びそ
の左右の楕円形断面に近い部分は閉弁時に弁座
９，１０との摩擦により縦長楕円を斜め横長楕円
とするような方向に回動し、圧着力を増強するた
め、噛み込みによる損傷もなく充分な圧着力が確
保でき、Ｏリング全体として均一な圧着シールが
可能となり、また弁座９，１０に対して全体に均
一に接触することから摩耗も少なくすることがで
きる。 In this way, the intermediate portions on both sides of the O-ring main body R with a perfect circular cross section or a cross section close to the perfect circle with respect to the valve seats 9 and 10 have a slightly higher protruding height than the elliptical portions 1a and 1b, but when the valve is closed, the surface In order to make sliding contact while pushing the rubber meat on the side upwards, the valve seats 9 and 10 in that area
The crimping force is almost equalized in the upper and lower parts where the rubber meat is pushed in and the crimping force is increased, and the oval parts 1a and 1b in the upper and lower parts of the O-ring main body R and the parts near the oval cross section on the left and right of the O-ring body R are closed. When valving, the friction with the valve seats 9 and 10 rotates the vertically long ellipse into a diagonally horizontally long ellipse, increasing the crimp force. Uniform pressure sealing is possible as a whole, and since the valve seats 9 and 10 are in uniform contact with the entire valve seats, wear can be reduced.
「考案の効果」
以上の通りこの考案によれば、Ｏリングを仕切
弁の摺動弁体のシール面に装着した状態における
垂直方向の中心線上の部分の横断面を縦長楕円形
に成形し、この楕円形の部分から水平方向の中心
線上の部分にかけて楕円の長径を直径とする真円
形断面形状に漸次移行するように成形することに
より、摺動弁体の摺動方向と交差状をなすＯリン
グの縦長楕円断面をなす上下部における環状溝か
らの突出高さを真円形断面をなす両側中間部より
も若干小さくし、仕切弁の閉弁時に環状溝からの
ゴム肉の過剰なハミ出しをなくして摺動弁体と弁
座間の隙間に噛み込むによる損傷を確実に防止す
ることができると共に、摺動弁体の下降に伴つて
弁座面との摩擦接触によりＯリング上下部の表面
側のゴム肉をその横断面の上側に押し上げようと
するとき、縦長楕円をその中心回りに回動して当
初の楕円短径側の円弧表面との接触から長径側寄
りの円弧表面との接触に移行させ、これによつて
Ｏリング上下部の圧着力を高めて充分な密着シー
ル性を確保し、更に環状溝からの突出高さが若干
大きい真円形断面の両側中間部の圧着性をその上
下部よりも予め高めておいて、ゴム肉が上方に向
かつて押し出されることによる圧着性の減少をカ
バーし、Ｏリング全体として均一な圧着シールが
可能となり、また摩耗を少なくすることができ
る。"Effects of the invention" As described above, according to this invention, when the O-ring is attached to the sealing surface of the sliding valve body of the gate valve, the cross section of the part on the vertical center line is shaped into an elongated ellipse, By forming the elliptical part to the part on the horizontal center line so that it gradually transitions to a perfect circular cross-sectional shape whose diameter is the major axis of the ellipse, an O The height of the protrusion from the annular groove at the top and bottom of the ring, which has an elongated elliptical cross section, is made slightly smaller than the middle part on both sides, which has a perfect circular cross section, to prevent excessive protrusion of the rubber from the annular groove when the gate valve is closed. It is possible to reliably prevent damage caused by the sliding valve body being caught in the gap between the sliding valve body and the valve seat, and the surface side of the upper and lower O-rings due to frictional contact with the valve seat surface as the sliding valve body descends. When attempting to push up the rubber meat above its cross section, the vertically elongated ellipse is rotated around its center and changes from contact with the arcuate surface on the shorter axis side of the ellipse to contact with the arcuate surface on the longer axis side. This increases the crimp force at the top and bottom of the O-ring to ensure sufficient sealing performance, and further improves the crimp strength at the midpoints on both sides of the perfect circular cross section, which has a slightly larger protruding height from the annular groove. By making the O-ring higher in advance than the O-ring, it is possible to compensate for the decrease in crimpability due to the rubber flesh being pushed upward, and it is possible to achieve a uniform crimp seal as a whole for the O-ring, and also to reduce wear.
第１図はこの考案のＯリングの正面図、第２図
は第１図のＡ−Ａ断面図、第３図は第１図のＢ−
Ｂ断面図、第４図はこの考案のＯリングを用いた
仕切弁の一部を破断して表わした正面図、第５図
は同上要部の拡大縦断正面図、第６図は摺動弁体
の正面図、第７図はこの考案のＯリングの楕円形
部の圧着態様を示す部分拡大縦断正面図である。
Ｒ……Ｏリング本体、１ａ，１ｂ……楕円形
部、２ａ，２ｂ……真円形部、３ａ，３ｂ……漸
変部分、６……摺動弁体、７，８……環状溝、
９，１０……弁座。
Fig. 1 is a front view of the O-ring of this invention, Fig. 2 is a sectional view taken along line AA in Fig. 1, and Fig. 3 is a sectional view taken along line B-- in Fig. 1.
B sectional view, Figure 4 is a partially cutaway front view of the gate valve using the O-ring of this invention, Figure 5 is an enlarged longitudinal sectional front view of the same main part, and Figure 6 is a sliding valve. FIG. 7 is a partially enlarged longitudinal sectional front view showing how the oval part of the O-ring of this invention is crimped. R...O-ring body, 1a, 1b...elliptical part, 2a, 2b...perfect circular part, 3a, 3b...gradual portion, 6...sliding valve body, 7, 8... annular groove,
9,10...Benza.
Claims (1)
おける垂直方向の中心線上の上下部分の横断面を
縦長楕円形に成形し、この楕円形断面の部分から
水平方向の中心線上の左右部分にかけて前記楕円
の長径を直径とする直円形断面形状に漸次移行す
るように成形してなることを特徴とする仕切弁用
Ｏリング。 The cross section of the upper and lower parts on the vertical center line when attached to the sealing surface of the sliding valve body of the gate valve is shaped into a vertically oblong ellipse, and from this elliptical cross section to the left and right parts on the horizontal center line. An O-ring for a gate valve, characterized in that it is formed so as to gradually transition to a rectangular cross-sectional shape whose diameter is the major axis of the ellipse.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP699484U JPS60118066U (en) | 1984-01-20 | 1984-01-20 | O-ring for gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP699484U JPS60118066U (en) | 1984-01-20 | 1984-01-20 | O-ring for gate valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60118066U JPS60118066U (en) | 1985-08-09 |
| JPH0129336Y2 true JPH0129336Y2 (en) | 1989-09-06 |
Family
ID=30484942
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP699484U Granted JPS60118066U (en) | 1984-01-20 | 1984-01-20 | O-ring for gate valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60118066U (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7011294B1 (en) * | 2004-09-08 | 2006-03-14 | Vat Holding Ag | Vacuum valve |
-
1984
- 1984-01-20 JP JP699484U patent/JPS60118066U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60118066U (en) | 1985-08-09 |
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