JPS6138268A - Butterfly valve - Google Patents
Butterfly valveInfo
- Publication number
- JPS6138268A JPS6138268A JP15957584A JP15957584A JPS6138268A JP S6138268 A JPS6138268 A JP S6138268A JP 15957584 A JP15957584 A JP 15957584A JP 15957584 A JP15957584 A JP 15957584A JP S6138268 A JPS6138268 A JP S6138268A
- Authority
- JP
- Japan
- Prior art keywords
- valve
- seat
- valve body
- seat part
- slope
- 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.)
- Pending
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
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
- F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
- F16K1/22—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
- F16K1/226—Shaping or arrangements of the sealing
- F16K1/2263—Shaping or arrangements of the sealing the sealing being arranged on the valve seat
- F16K1/2266—Shaping or arrangements of the sealing the sealing being arranged on the valve seat and being forced into sealing contact with the valve member by a spring or a spring-like member
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift Valve (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、管路の開閉を行うちょう形弁に関し、特に
弁体が接離するシートリングをメタルシートとしたちょ
う形弁に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a butterfly valve for opening and closing a pipeline, and more particularly to a butterfly valve in which a metal sheet is used as a seat ring with which a valve body comes into contact with and leaves the valve body.
従来、弁体が接離するシートリングをメタルシートとし
たちょう形弁は、例えば特開昭５４−６７１５６号公報
に示されるように公知である。しかしながら、が）る構
造のちょう形弁は、メタルシートのシート部が閉弁時に
本体、リテーナリング、保持リング及び弁体によって４
方を剛性材料で囲まれて、自由に変形することが出来な
い為、弁体に強い反発力が作用して大きな摩擦力を惹起
し、弁体の回動トルクが増大して米る欠点があった。BACKGROUND ART Conventionally, a butterfly-shaped valve in which a metal sheet is used as a seat ring on which a valve body moves in and out of contact is known, for example, as shown in Japanese Patent Application Laid-Open No. 54-67156. However, in the case of a butterfly valve with a structure in which the seat part of the metal seat is
Since the valve body is surrounded by a rigid material and cannot be deformed freely, a strong repulsive force acts on the valve body, causing a large frictional force, which increases the rotational torque of the valve body. there were.
そこで、第４図に示すようにメタルシート（１）のシー
ト部（１ａ）に隣接して、シート部（１ａ）と同一構造
のメタルＯリングを補助リング（２）として配置する構
造が提案された。が）る構造によっても、熱膨張時や流
体圧力による弁体の変化は第４図に矢印で示すＡ方向の
変位であるため、隣接する補助リング（２）によっては
その変位を充分に吸収することが出来ない問題があった
。Therefore, as shown in Fig. 4, a structure has been proposed in which a metal O-ring having the same structure as the seat part (1a) is arranged as an auxiliary ring (2) adjacent to the seat part (1a) of the metal sheet (1). Ta. Even with the structure, the change in the valve body due to thermal expansion or fluid pressure is a displacement in the direction A shown by the arrow in Figure 4, so the adjacent auxiliary ring (2) can sufficiently absorb this displacement. There was a problem that I couldn't do it.
又、補助リング（２）を独立に配置する為、高価になる
と共に、部品点数が増加し、メインテナンスに手間を要
する問題点があった。In addition, since the auxiliary ring (2) is arranged independently, it is expensive, the number of parts increases, and maintenance is troublesome.
この発明は、従来のメタルシートを有するちょう形弁に
みられた問題点を解消せんとするものであり、シート部
の変位を同方向の弾性支持により有効に吸収せんとする
ものである。This invention aims to solve the problems seen in conventional butterfly valves having metal seats, and aims to effectively absorb displacement of the seat portion by elastic support in the same direction.
以上の問題点を解決するためにこの発明が採った手段は
、本体内周面に密着され弁体と接離してシール作用を達
成するシートリングをメタルシートとしたちょう形弁に
おいて、メタルシートのシート部に弁体の接触部と対称
位置に弾性的に作動する支持斜面を配設し、該支持斜面
を弁体とはψ平行に形成したことを特徴とする。The means adopted by the present invention to solve the above problems is to provide a butterfly valve with a metal sheet as a seat ring that is in close contact with the inner peripheral surface of the main body and achieves a sealing action by coming into contact with and separating from the valve body. The present invention is characterized in that a support slope that operates elastically is disposed on the seat portion at a position symmetrical to the contact portion of the valve body, and the support slope is formed ψ parallel to the valve body.
シート部に隣接する角度と略同−の角度を有し、弁体が
熱膨張若しくは流体圧力を受けて変位するとき、その変
位に応動して弾性的に作動する支持斜面でシート部を支
持し、シート部の変形をこの斜面の弾性的な変位で吸収
する。The seat part is supported by a support slope that has approximately the same angle as the angle adjacent to the seat part and that operates elastically in response to the displacement when the valve body is displaced due to thermal expansion or fluid pressure. , the deformation of the seat portion is absorbed by the elastic displacement of this slope.
以下に図面を参照しつ）、この発明の好ましい実施例に
ついて説明する。図において（１０）は円筒形に形成さ
れたちょう形弁の本体、（１１）は該本体（１０）内に
弁棒（１２）により回転自在に軸支された弁体であって
、弁体（１１）の回転中心は弁棒（１２）の回転中心か
ら偏心している。Preferred embodiments of the present invention will be described below with reference to the drawings. In the figure, (10) is a main body of a butterfly-shaped valve formed in a cylindrical shape, and (11) is a valve body rotatably supported in the main body (10) by a valve stem (12). The center of rotation of (11) is eccentric from the center of rotation of the valve stem (12).
−（１３）はメタルシートからなるシートリングであっ
て、シート部（１４）、〃スケット部（１５）並びに両
部（１４）（１５）を連続する７リング部（１６）を有
し、リテーナリング（１７）でがスケット部（１５）を
本体（１０）に密着させつ）本体（１０）に取り付けら
れる。シート部（１４）にはコイルバネ等からなる補助
弾性リング（１８）が挿設される。- (13) is a seat ring made of a metal sheet, which has a seat part (14), a socket part (15), and 7 ring parts (16) that connect both parts (14) and (15), and has a retainer. A ring (17) is attached to the main body (10) by bringing the socket part (15) into close contact with the main body (10). An auxiliary elastic ring (18) made of a coil spring or the like is inserted into the seat part (14).
（１９）はシート部（１４）と本体（１０）の内周面と
の間に配設された弾性的に作動する支持斜面であって、
該支持斜面（１９）は、弁体（１１）がシート部（１０
に接する角度とは？同一の角度でシート部（１４）の反
対側に当接している。すなわち、シート部（１４）の対
称位置において弁体（１１）とはψ平行に支持斜面（１
９）が位置する。(19) is an elastically actuated support slope disposed between the seat portion (14) and the inner peripheral surface of the main body (10),
The support slope (19) is such that the valve body (11) is connected to the seat portion (10).
What is the angle tangent to ? It abuts the opposite side of the seat part (14) at the same angle. That is, at the symmetrical position of the seat part (14), the valve body (11) is parallel to the support slope (1).
9) is located.
弁体（１１）が熱膨張若しくは流体の圧力を受けて矢印
へ方向へ変位するとき、シート部（１４）は弁体（１１
）に押されて圧縮されるが、同時に支持斜面（１９）に
同一の力を及ぼし、支持斜面（１９）をＡ方向と平行な
直線的な力で押すため、シート部（１４）の弾性変形は
支持針面（１９）の弾力的な作動で吸収される。このよ
うに、シート部（１４）の弾性変形を支持斜面（１９）
で直線的に吸収する結果、弁体の変位をかなり大きな量
まで吸収出来ると共に、シート部（１４）が大きく圧縮
されることがない為、弁の開閉トルクも小さくなる。When the valve body (11) is displaced in the direction indicated by the arrow due to thermal expansion or fluid pressure, the seat portion (14) moves toward the valve body (11).
), but at the same time, the same force is applied to the support slope (19) and the support slope (19) is pushed with a linear force parallel to the A direction, so the seat part (14) is elastically deformed. is absorbed by the elastic operation of the support needle surface (19). In this way, the elastic deformation of the seat portion (14) is supported by the slope (19).
As a result of linear absorption, the displacement of the valve body can be absorbed to a considerably large extent, and since the seat portion (14) is not compressed to a large extent, the opening/closing torque of the valve is also reduced.
弾性的に作動する支持斜面（１９）は、第２図に示すよ
うにくさび形に折曲した板バネで構成しても、或は第３
図に示すようにくさび形の断面を有する剛体のスライド
駒（２０）と該スライド駒（２０）をシート部に向かつ
て付勢するコイルレノイネ等のバネ手段（２１）とで構
成しても良し１゜〔発明の効果〕
この発明のちょう形弁によれば本体内周面１こ密着され
弁体と接離してシール作用を達成するシートリングをメ
タルシートとしたちょう形弁において、メタルシートの
シート部に弁体の接触部と対称位置に弾性的に作動する
支持斜面を配設し、該支持斜面を弁体とはヤ平行に形成
しであるので、熱膨張や流体圧力による弁体の変位をき
わめて効果的に吸収出来ると共に、シート部自体の変形
は小さく抑えることが出来るので、弁の開閉トルクを低
減することが出来る。The elastically actuated support slope (19) may consist of a wedge-shaped bent leaf spring, as shown in FIG.
As shown in the figure, it may be constructed of a rigid slide piece (20) having a wedge-shaped cross section and a spring means (21) such as a coil spring that biases the slide piece (20) toward the seat portion. [Effects of the Invention] According to the butterfly valve of the present invention, the seat ring that is in close contact with the inner peripheral surface of the main body and that comes into contact with and separates from the valve body to achieve a sealing action is a metal sheet. A supporting slope that operates elastically is provided at a position symmetrical to the contact area of the valve body, and the supporting slope is formed parallel to the valve body, so that displacement of the valve body due to thermal expansion or fluid pressure is prevented. Since the deformation of the seat part itself can be suppressed to a small extent, the opening/closing torque of the valve can be reduced.
第１図はこの発明に係るちょう形弁の一部の断面図、第
２図は要部の拡大断面図、第３図は変形を示す第２図と
同様の図、第４図は従来のちょう形の一部の拡大断面図
である。
（１０）・・・本体 （１１）・・・弁体（１
２）・・・弁棒 （１３）・・・メタルシート
（１４）・・・シート部 （１５）・・・〃スケッ
ト部（１６）・・・７ランジｕ （１７）・・・リ
テーナリン（１８）・・・弾性リング （１９）・・
・支持斜面（２０）・・・スライド駒 （２１）・・
・バネ手段実用新案登録出願人 株式会社 巴技術研究
代 理 人 弁理士 竹 内
裕第１図
第２図 第３図Fig. 1 is a sectional view of a part of the butterfly valve according to the present invention, Fig. 2 is an enlarged sectional view of the main part, Fig. 3 is a similar view to Fig. 2 showing a modification, and Fig. 4 is a conventional one. FIG. 3 is an enlarged cross-sectional view of a part of the butterfly shape. (10)...Body (11)...Valve body (1
2) Valve stem (13) Metal seat (14) Seat part (15) Sket part (16) 7 lange u (17) Retainer link (18 )...Elastic ring (19)...
・Support slope (20)...Slide piece (21)...
・Applicant for registration of spring means utility model Tomoe Technology Research Agency Co., Ltd. Patent attorney Takeuchi
Yutaka Figure 1 Figure 2 Figure 3
Claims (3)
を達成するシートリングをメタルシートとしたちょう形
弁において、メタルシートのシート部に弁体の接触部と
対称位置に弾性的に作動する支持斜面を配設し、該支持
斜面を弁体とほヾ平行に形成したことを特徴とするちょ
う形弁。(1) In a butterfly-shaped valve with a metal sheet, the seat ring is tightly attached to the inner circumferential surface of the main body and achieves a sealing effect by coming into contact with and separating from the valve body. 1. A butterfly valve characterized in that a support slope is provided which operates in parallel with the valve body, and the support slope is formed substantially parallel to the valve body.
とを特徴とする特許請求の範囲第１項記載のちょう形弁
。(2) The butterfly valve according to claim 1, wherein the supporting slope is made of a wedge-shaped leaf spring.
ド駒と該スライド駒をシート部に向って付勢するバネ手
段とからなることを特徴とする特許請求の範囲第１項記
載のちょう形 弁。(3) A butterfly shape according to claim 1, characterized in that the supporting slope comprises a rigid slide piece having a wedge-shaped cross section and a spring means for biasing the slide piece toward the seat portion. valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15957584A JPS6138268A (en) | 1984-07-30 | 1984-07-30 | Butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15957584A JPS6138268A (en) | 1984-07-30 | 1984-07-30 | Butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6138268A true JPS6138268A (en) | 1986-02-24 |
Family
ID=15696705
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15957584A Pending JPS6138268A (en) | 1984-07-30 | 1984-07-30 | Butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6138268A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2686136A1 (en) * | 1992-01-15 | 1993-07-16 | Alsthom Velan | Valve with metal seal, particularly butterfly valve |
-
1984
- 1984-07-30 JP JP15957584A patent/JPS6138268A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2686136A1 (en) * | 1992-01-15 | 1993-07-16 | Alsthom Velan | Valve with metal seal, particularly butterfly valve |
| US5249774A (en) * | 1992-01-15 | 1993-10-05 | Alsthom Velan | Valve having a metal seal, in particular a butterfly valve |
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