JPH0744866Y2 - Soft seal type valve - Google Patents
Soft seal type valveInfo
- Publication number
- JPH0744866Y2 JPH0744866Y2 JP1989116959U JP11695989U JPH0744866Y2 JP H0744866 Y2 JPH0744866 Y2 JP H0744866Y2 JP 1989116959 U JP1989116959 U JP 1989116959U JP 11695989 U JP11695989 U JP 11695989U JP H0744866 Y2 JPH0744866 Y2 JP H0744866Y2
- Authority
- JP
- Japan
- Prior art keywords
- valve
- packing
- seal type
- soft seal
- type valve
- 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
Landscapes
- Sliding Valves (AREA)
Description
【考案の詳細な説明】 〈産業上の利用分野〉 この考案は、ソフトシール型弁に関し、詳しくはソフト
シール型弁の改良に関する。DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a soft seal type valve, and more particularly to improvement of a soft seal type valve.
従来、弁体の弁座に対する当たりをやわらげ、かつ、確
実な水密性を達成すること、及び弁解放時の流水の効率
を良くすることを目的として第５図に示すようなソフト
シール型弁が提案され、かつ、実施されている。Conventionally, a soft seal type valve as shown in FIG. 5 has been used for the purpose of softening the contact of the valve body with respect to the valve seat, achieving reliable water tightness, and improving the efficiency of running water when the valve is opened. Proposed and implemented.
このソフトシール型弁Ａは、直管状の主管部Ｂに対し、
弁体Ｃ、及び弁棒Ｄを受容する円筒ケーシング部Ｅを直
交させて形成し、この中に、略円柱ないしは、略円錐台
状体を基体とした、外周輪郭が弁箱Ｆ内面に沿う形状と
した弁体Ｃを収嵌し、さらに、この弁体Ｃ外面にシール
用パッキンＧを設けた構成とされている。This soft seal valve A has a straight tubular main pipe portion B,
A cylindrical casing portion E for receiving the valve body C and the valve rod D is formed orthogonally to each other, in which a substantially cylindrical shape or a substantially frustoconical body is used as a base, and the outer peripheral contour is along the inner surface of the valve box F. The valve body C is fitted and the seal packing G is provided on the outer surface of the valve body C.
ところで、上記弁体Ｃは、三次元的な立体形状をなすた
め、この外周に嵌着されるシール用パッキンＧも、第６
図に示すように円環状部G1にＵ字状部G2を一体に設けた
立体構造のものとする必要があり、このため、シール用
パッキンＧの製造が容易でないといった問題があった。By the way, since the valve body C has a three-dimensional three-dimensional shape, the sealing packing G fitted to the outer periphery of the valve body C also has a sixth shape.
As shown in the figure, it is necessary to have a three-dimensional structure in which the U-shaped portion G 2 is integrally provided on the annular portion G 1 , which causes a problem that the manufacturing of the sealing packing G is not easy.
即ち、上記シール用パッキンＧは、弁体Ｃが大きくなる
につれ、パッキンＧも大きくなる結果パッキン成形用金
型もそれだけ大きなものを用意する必要が有り、シール
用パッキンのゴム容積はそれほど大きくはならないにも
かかわらず、大型の弁ほど製造コストがかかるといった
問題を生じていた。That is, as the sealing packing G becomes larger as the valve body C becomes larger, the packing G also needs to be made larger as a result of the packing G becoming larger, and the rubber volume of the sealing packing does not become so large. Nevertheless, there was a problem that the larger the valve, the higher the manufacturing cost.
このような問題を解消するため、本願出願人は上記パッ
キンの円環状部G1とＵ字状部G2とを夫々別体とし、両者
を組み合わせて一体化し得るパッキンを提案した（例え
ば実開昭63−107869号又は同第63−42977号）。In order to solve such a problem, the applicant of the present application has proposed a packing in which the annular portion G 1 and the U-shaped portion G 2 of the above-mentioned packing are separately provided and the two can be combined and integrated (for example, the actual opening). 63-107869 or 63-42977).
しかしながら、上記パッキンを弁体に一体的に装着した
状態で弁体を成形した場合、第７図に示すようにパッキ
ンの円環状部G1とＵ字状部G2との接合面G3が円環状部G1
の側面G1′と面一状態となっているため第８図に示すよ
うに弁を締め切ったとき、円環状パッキンG1が弁箱Ｆ内
面との接触により変形して接合面に隙間Ｓができ内部流
体がこの隙間Ｓを通して浸透し易く、流体圧力が高い場
合は、この部分より弁上流側P1より下流側P2へ内部流体
が矢印Ｘで示すように漏洩することがある問題が生じ
た。However, when the valve body is molded with the packing integrally attached to the valve body, as shown in FIG. 7, the joint surface G 3 between the annular portion G 1 and the U-shaped portion G 2 of the packing is Torus G 1
Since it is flush with the side surface G 1 ′ of the valve, when the valve is closed as shown in FIG. 8, the annular packing G 1 is deformed by the contact with the inner surface of the valve box F and the gap S is formed on the joint surface. If the internal fluid easily penetrates through this gap S and the fluid pressure is high, there is a problem that the internal fluid may leak from this portion to the downstream side P 2 from the upstream side P 1 as shown by the arrow X. It was
この考案は、上記問題点に鑑み、分割型のパッキンの利
点を活かしつつ、内部流体の浸透を簡単な構成で確実に
防止でき、信頼性に優れるソフトシール型弁を提供する
ことを目的としてなされたものである。In view of the above problems, the present invention has been made with the object of providing a soft-seal type valve that can reliably prevent internal fluid from penetrating with a simple structure while utilizing the advantages of the split type packing, and that is excellent in reliability. It is a thing.
弁主体部の基部を円柱状とした弁の主体部縦方向の外周
輪郭にＵ字状パッキンを、また前記主体部の基部周方向
外周に円環状パッキンを配設し前記弁に一体化してなる
ソフトシール型弁において、前記Ｕ字状パッキンの開放
端が、前記円環状パッキンの外周面側が高く内周面側が
低くなる階段状面とされ、前記円環状パッキンの円周外
側面には前記階段状突き合わせ部と隙間無く嵌合する陥
凹部が前記外周側面方向に開口形成され、該陥凹部に前
記Ｕ字状パッキンの開放端を突き合わせて前記弁に一体
化してなることを特徴とするものである。A U-shaped packing is arranged on the outer peripheral contour of the main body of the valve in the longitudinal direction of the main body of the valve main body having a cylindrical base, and an annular packing is arranged on the outer periphery of the main body in the peripheral direction of the base to be integrated with the valve. In the soft seal type valve, the open end of the U-shaped packing is a stepped surface in which the outer peripheral surface side of the annular packing is higher and the inner peripheral surface side is lower, and the staircase is on the outer circumferential surface of the annular packing. A recess which fits into the shape-abutting portion without a gap is formed in the direction of the outer peripheral side surface, and the open end of the U-shaped packing is abutted against the recess to be integrated with the valve. is there.
次に、この考案を実施例により説明する。 Next, this invention will be described with reference to examples.
第１図は、この考案の実施例の要部分解斜視図、第２図
は実施例の要部断面図、第３図は実施例の斜視図であ
る。1 is an exploded perspective view of an essential part of an embodiment of the present invention, FIG. 2 is a sectional view of an essential part of the embodiment, and FIG. 3 is a perspective view of the embodiment.
この考案のソフトシール型弁１は、弁箱内面（図示せ
ず）に沿う輪郭形状を有した弁主体部C2の基部C1を円柱
状とした弁の主体部縦方向の外周輪郭にＵ字状パッキン
1Aを、また前記主体部の基部C1周方向外周に円環状パッ
キン1Bを配設し前記弁に一体化してなるソフトシール型
弁１において、前記Ｕ字状パッキン1Aの開放端２が、第
１図及び第２図に示すように円環状パッキン1Bの外周面
側が高く内周面側が低くなる階段状面とされ、円環状パ
ッキン1Bの円周外側面３には前記階段状突き合わせ部と
隙間無く嵌合する陥凹部４が前記外周側面方向に開口形
成され、該陥凹部４に前記Ｕ字状パッキン1Aの開放端２
を突き合わせて前記弁１に一体化して構成されている。
上記実施例において５はＵ字状パッキン1Aの解放端部２
上に形成された位置決め用突起を示し、必要に応じて形
成される。The soft-seal type valve 1 of the present invention has a U-shaped outer peripheral contour in the longitudinal direction of the main body of the valve in which the base C 1 of the valve main body C 2 having a contour along the inner surface of the valve box (not shown) is cylindrical. Letter packing
1A and a soft seal type valve 1 in which a ring-shaped packing 1B is arranged on the outer periphery of the base portion C 1 in the circumferential direction of the main body and integrated with the valve, the open end 2 of the U-shaped packing 1A is As shown in FIG. 1 and FIG. 2, the annular packing 1B has a stepped surface in which the outer peripheral surface side is high and the inner peripheral surface side is low. A recess 4 that fits without a hole is formed in the direction of the outer peripheral side surface, and the open end 2 of the U-shaped packing 1A is formed in the recess 4.
Are abutted against each other and integrated with the valve 1.
In the above embodiment, 5 is the open end 2 of the U-shaped packing 1A.
The positioning projection formed above is shown, and is formed as needed.
そして、この考案のソフトシール型弁１は、金型（図示
省略）内にまず円環状パッキン1BとＵ字状パッキン1Aと
をその開放端部２を陥凹部４に嵌入したのち金型内へ樹
脂注入してソフトシール型弁を成形するのである。In the soft seal type valve 1 of the present invention, an annular packing 1B and a U-shaped packing 1A are first fitted in a mold (not shown), the open end 2 of which is fitted into a recess 4 and then the mold is inserted into the mold. A soft seal type valve is molded by injecting resin.
なお、第４図に示すようにＵ字状パッキン1A側面1A′に
陥凹部６を設けた場合、この陥凹部６内にも弁成形用樹
脂が入り込み硬化するので弁体との密着性は良くなると
共にＵ字状パッキン1Aの上下方向の動きを拘束するので
Ｕ字状パッキン1Aと円環状パッキン1Bの密着性が良くな
る。As shown in FIG. 4, when the concave portion 6 is provided on the side surface 1A 'of the U-shaped packing 1A, the valve molding resin enters the concave portion 6 and hardens, so that the adhesion to the valve body is good. In addition, since the vertical movement of the U-shaped packing 1A is restricted, the adhesion between the U-shaped packing 1A and the annular packing 1B is improved.
なお、上記陥凹部６として連続溝状のものを示したが、
継続するものとしても良い。Although the recess 6 has a continuous groove shape,
It may be continued.
この考案のソフトシール型弁１は、Ｕ字状パッキン1Aと
円環状パッキン1Bとが、別々の金型で成形され、しかる
後嵌合により三次元的な立体構造に組立てられる。In the soft seal type valve 1 of the present invention, the U-shaped packing 1A and the annular packing 1B are molded by separate molds and then assembled into a three-dimensional three-dimensional structure by fitting.
その後、ソフトシール型弁の弁体成形金型装置（図示せ
ず）内に装着され、樹脂注入等による弁体成形時に弁体
と一体化されるのであるが、このとき、Ｕ字状パッキン
1Aの開放端２は、円環状パッキン1Bの円周外側面より陥
凹部４に嵌合しているため、両者の接合面が円環状パッ
キン1Bの軸方向端面で同一面とならず、従って流体侵入
経路が複雑となり、しかもＵ字状パッキン1Aの開放端に
は弁閉鎖時、第３図の部分図に示すように側面及び軸方
向の両方から圧縮圧力が作用するから第８図に示したよ
うな接合界面の剥離の問題も少なく、このため内部流体
の漏洩が確実に防止される。After that, it is mounted in a valve body molding die device (not shown) of the soft seal type valve and is integrated with the valve body at the time of molding the valve body by resin injection or the like. At this time, the U-shaped packing is used.
Since the open end 2 of 1A is fitted into the recess 4 from the outer circumferential surface of the ring-shaped packing 1B, the joint surface of the two does not coincide with the axial end surface of the ring-shaped packing 1B, so that the fluid The entry path becomes complicated, and when the valve is closed at the open end of the U-shaped packing 1A, compression pressure acts from both the side surface and the axial direction as shown in the partial view of FIG. The problem of peeling of the joint interface is small, and therefore the leakage of the internal fluid is reliably prevented.
この考案は、以上のように構成されているので、いかに
大型のソフトシール弁の弁体であっても、弁体のパッキ
ンは円環状部とＵ字状部を別体として成形できるから、
パッキン成形金型が小型化され、成形時間が短くなる等
成形が非常に容易となる効果を有する他、円環状パッキ
ンとＵ字状パッキンとの突き合わせ部分の接合界面が凸
状に屈曲して複雑となり、また弁閉鎖時に加わる圧力に
よっても接合界面に隙間ができることが無く内部流体の
侵入及び透過が有効に防止できるので漏水の内信頼性の
有るソフトシール型弁とすることが出来るのである。Since the present invention is configured as described above, no matter how large the valve body of a soft seal valve, the packing of the valve body can be formed by separately forming the annular portion and the U-shaped portion.
In addition to the effect that the packing molding die is downsized and the molding time is shortened, the molding becomes very easy, and the joint interface at the abutting part of the annular packing and the U-shaped packing is bent in a convex shape and is complicated. In addition, even if the pressure is applied when the valve is closed, no gap is formed at the joint interface, and the penetration and permeation of the internal fluid can be effectively prevented, so that a soft seal type valve with reliable internal water leakage can be obtained.
第１図は、この考案の実施例の要部斜視図、第２図は実
施例の要部断面図、第３図は実施例の斜視図、第４図は
他の実施例の要部斜視図、第５図、第６図、第７図は従
来例の説明断面図、及び斜視図、第８図は従来例の弁締
切時の状況を説明する要部断面図である。 １…ソフトシール型弁、1A…Ｕ字状パッキン、1B…円環
状パッキン ２…Ｕ字状パッキンの開放端、３…円環状パッキン1Bの
円周外側面 ４…陥凹部FIG. 1 is a perspective view of an essential portion of an embodiment of the present invention, FIG. 2 is a sectional view of an essential portion of the embodiment, FIG. 3 is a perspective view of the embodiment, and FIG. 4 is a perspective view of an essential portion of another embodiment. FIG. 5, FIG. 6, FIG. 6 and FIG. 7 are explanatory cross-sectional views of a conventional example, and perspective views, and FIG. 8 is a cross-sectional view of essential parts for explaining the situation at the time of valve shutoff of the conventional example. 1 ... Soft seal type valve, 1A ... U-shaped packing, 1B ... Annular packing 2 ... Open end of U-shaped packing, 3 ... Circular outer surface of annular packing 1B 4 ... Recessed portion
───────────────────────────────────────────────────── フロントページの続き (72)考案者 坂本 宏昭 大阪府堺市石津北町64番地 久保田鉄工株 式会社ビニルパイプ工場内 (56)参考文献 実開 昭63−42977（ＪＰ，Ｕ) 実開 昭56−173258（ＪＰ，Ｕ) 実開 昭54−171527（ＪＰ，Ｕ) 実開 昭60−85667（ＪＰ，Ｕ) ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Hiroaki Sakamoto 64, Ishizukita-machi, Sakai City, Osaka Prefecture Inside the vinyl pipe factory of Kubota Iron Works Co., Ltd. (56) References: 63-42977 (JP, U) 56-173258 (JP, U) Actually opened 54-171527 (JP, U) Actually opened 60-85667 (JP, U)
Claims (1)
縦方向の外周輪郭にＵ字状パッキンを、また前記主体部
の基部周方向外周に円環状パッキンを配設し前記弁に一
体化してなるソフトシール型弁において、前記Ｕ字状パ
ッキンの上端面が、前記円環状パッキンの外周面側が高
く内周面側が低くなる階段状面とされ、前記円環状パッ
キンの円周外側面には前記階段状突き合わせ部と隙間無
く嵌合する陥凹部が前記外周側面方向に開口形成され、
該陥凹部に前記Ｕ字状パッキンの上端面を突き合わせて
前記弁に一体化してなることを特徴とするソフトシール
型弁。1. A U-shaped packing is arranged on the outer peripheral contour of the main body of the valve in the longitudinal direction of the main body, and an annular packing is arranged on the outer periphery of the base of the main body in the longitudinal direction. In the soft seal type valve that is integrated with the above, the upper end surface of the U-shaped packing is a stepped surface in which the outer peripheral surface side of the annular packing is higher and the inner peripheral surface side is lower, and the outer circumference of the annular packing is outside. On the side surface, a recessed portion that fits with the stepped butting portion without a gap is formed in the outer peripheral side surface direction,
A soft seal type valve, characterized in that the upper end surface of the U-shaped packing is abutted against the recess and integrated with the valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989116959U JPH0744866Y2 (en) | 1989-10-03 | 1989-10-03 | Soft seal type valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989116959U JPH0744866Y2 (en) | 1989-10-03 | 1989-10-03 | Soft seal type valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0355967U JPH0355967U (en) | 1991-05-29 |
| JPH0744866Y2 true JPH0744866Y2 (en) | 1995-10-11 |
Family
ID=31665212
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989116959U Expired - Lifetime JPH0744866Y2 (en) | 1989-10-03 | 1989-10-03 | Soft seal type valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0744866Y2 (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0619884Y2 (en) * | 1986-09-08 | 1994-05-25 | 株式会社クボタ | Soft seal type valve packing |
-
1989
- 1989-10-03 JP JP1989116959U patent/JPH0744866Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0355967U (en) | 1991-05-29 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |