JPS63142473U - - Google Patents
Info
- Publication number
- JPS63142473U JPS63142473U JP3521987U JP3521987U JPS63142473U JP S63142473 U JPS63142473 U JP S63142473U JP 3521987 U JP3521987 U JP 3521987U JP 3521987 U JP3521987 U JP 3521987U JP S63142473 U JPS63142473 U JP S63142473U
- Authority
- JP
- Japan
- Prior art keywords
- seat ring
- butterfly valve
- sphere
- valve body
- 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.)
- Granted
Links
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Lift Valve (AREA)
Description
第１図及び第２図は本考案の一実施例を示すバ
タフライ弁の弁棒に直角方向の横断面図及び弁棒
を含む縦断面図、第３図は弁体球面とシートリン
グ内面の楕円球面との関係を示す説明図、第４図
及び第５図は従来例を示す要部断面図、第６図ａ
，ｂ及び第７図ａ，ｂは従来例を示す要部断面側
面図と同正面図、第８図は従来例（実線）と本考
案（点線）のバタフライ弁の流量特性線図である
。
１…弁体、４…弁棒、１２…シートリング、ｄ
…球面、ｅ…楕円球面、Ｒ…球半径、ｒ…楕円球
の短半径。
Figures 1 and 2 are a cross-sectional view perpendicular to the valve stem and a longitudinal cross-sectional view including the valve stem of a butterfly valve showing an embodiment of the present invention, and Figure 3 is an ellipse of the spherical surface of the valve body and the inner surface of the seat ring. An explanatory diagram showing the relationship with the spherical surface, FIGS. 4 and 5 are sectional views of main parts showing the conventional example, and FIG. 6a
, b and FIGS. 7a and 7b are a cross-sectional side view and a front view of the main part showing the conventional example, and FIG. 8 is a flow characteristic diagram of the butterfly valve of the conventional example (solid line) and the present invention (dotted line). 1... Valve body, 4... Valve stem, 12... Seat ring, d
... Spherical surface, e... Elliptical sphere, R... Sphere radius, r... Short radius of the elliptical sphere.
Claims (1)
フライ弁において、上記シートリングの内面を楕
円球面となし、該楕円球の短半径を、周面を球の
一部で形成した弁体の球半径より僅かに小さく形
成し、弁体の閉止位置を１０°〜２０°開位置に
設定できるようにしたことを特徴とするバタフラ
イ弁のシートリング。 ２ 上記弾性シートリングがゴム製である実用新
案登録請求の範囲第１項記載のバタフライ弁のシ
ートリング。[Claims for Utility Model Registration] 1. In a butterfly valve in which an elastic seat ring is stretched on the inner surface of the main body, the inner surface of the seat ring is an elliptical sphere, and the short axis of the elliptical sphere is defined by the circumferential surface being a part of the sphere. A seat ring for a butterfly valve, characterized in that the seat ring is formed to be slightly smaller than the spherical radius of the formed valve body, and the closed position of the valve body can be set to an open position of 10° to 20°. 2. The seat ring for a butterfly valve according to claim 1, wherein the elastic seat ring is made of rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3521987U JPH0328210Y2 (en) | 1987-03-12 | 1987-03-12 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3521987U JPH0328210Y2 (en) | 1987-03-12 | 1987-03-12 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63142473U true JPS63142473U (en) | 1988-09-20 |
| JPH0328210Y2 JPH0328210Y2 (en) | 1991-06-18 |
Family
ID=30844509
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3521987U Expired JPH0328210Y2 (en) | 1987-03-12 | 1987-03-12 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0328210Y2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0471873U (en) * | 1990-10-29 | 1992-06-25 | ||
| JP2012107716A (en) * | 2010-11-18 | 2012-06-07 | Sasakura Engineering Co Ltd | Butterfly valve and seat ring |
| JP5355792B2 (en) * | 2010-06-29 | 2013-11-27 | 三菱電機株式会社 | Step type valve |
-
1987
- 1987-03-12 JP JP3521987U patent/JPH0328210Y2/ja not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0471873U (en) * | 1990-10-29 | 1992-06-25 | ||
| JP5355792B2 (en) * | 2010-06-29 | 2013-11-27 | 三菱電機株式会社 | Step type valve |
| JP2012107716A (en) * | 2010-11-18 | 2012-06-07 | Sasakura Engineering Co Ltd | Butterfly valve and seat ring |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0328210Y2 (en) | 1991-06-18 |
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