JPS602060U

JPS602060U - Butterfly valve seat ring

Info

Publication number: JPS602060U
Application number: JP8463583U
Authority: JP
Inventors: 義則万木
Original assignee: 株式会社　巴技術研究所
Priority date: 1983-06-03
Filing date: 1983-06-03
Publication date: 1985-01-09

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１，２図は、従来の中心形バタフライ弁の一部を示す
分解斜視図、第３図は本考案の技術的手段の作用を説明
する参考図であって、第３図Ａは弁全閉時を、第３図Ｂ
は弁全開時をそれぞれ示す１、第４図は本考案に係る弁
板とシートリングの一部の斜視図、第５図は弁板とシー
トリングの関係を示す説明図であって、第５図Ａはボス
部とボス部接触面の部分を、第５図Ｂは第５図Ａと直交
する部分をそれぞれ示す、第６図は弁板外形加工の一実
施例を示す図、第７図は本考案の特有の効果を説明する
ための参考図である。１．１０・・・弁本体、２，２０・・・弁板、３，３０
・・・シートリング、４．３５・・・弁軸孔、５．２１
・・・ボス部、６．３３・・・ボス部接触面、１１・・
・凹溝、２２・・・弁板外周、２３・・・弁軸、３４・
・・弁板接触面、２４．３６・・・角部、３７・・・凸
状部。矛　　２ＩＬ″ −゛　１　　廿２　　　−Figures 1 and 2 are exploded perspective views showing a part of a conventional central butterfly valve, Figure 3 is a reference diagram for explaining the operation of the technical means of the present invention, and Figure 3A is a complete view of the valve. When closed, Figure 3B
1 and 4 are partial perspective views of the valve plate and seat ring according to the present invention, respectively, and FIG. 5 is an explanatory diagram showing the relationship between the valve plate and the seat ring, Figure A shows the boss and the contact surface of the boss, Figure 5B shows the part perpendicular to Figure 5A, Figure 6 shows an example of valve plate external processing, Figure 7 is a reference diagram for explaining the unique effects of the present invention. 1.10...Valve body, 2,20...Valve plate, 3,30
... Seat ring, 4.35 ... Valve shaft hole, 5.21
...Boss part, 6.33...Boss part contact surface, 11...
・Concave groove, 22... Valve plate outer periphery, 23... Valve shaft, 34.
...Valve plate contact surface, 24.36... Corner, 37... Convex portion. Spear 2IL″ −゛ 1 廿2 −

Claims

[Scope of Claim for Utility Model Registration] (a) The entire inner peripheral surface of a hollow cylindrical valve body made of a rigid material, and a disc-shaped valve plate made of a rigid material that is rotatably supported by the valve body. an annular seat ring made of an elastic material and interposed between the outer circumferential edge of the valve plate and the inner circumferential surface of the annular seat ring, the inner circumferential surface of which is provided with a pair of valve stem holes through which the rotating shaft of the valve plate passes. , in a seat ring of a butterfly valve in which the periphery of the pair of valve stem holes is always pressed against the boss part of the valve plate, the boss part contact surface of the annular seat ring and the valve plate contact surface when the valve is closed are A butterfly valve seat ring characterized by being formed into the same spherical shape, reducing contact resistance with the valve plate and improving sealing performance. (2) A convex part is formed on the back surface of the seat ring, a concave groove is formed in the valve body to receive the convex part, and the seat ring is fixed to the valve body by fitting the convex part into the concave groove. IJ Song (3) Utility Model Registration Claim No. 1 characterized in that the seat ring is integrally molded with the valve body. The seat ring described in item 1.