JPS6275270U

JPS6275270U -

Info

Publication number: JPS6275270U
Application number: JP16722385U
Authority: JP
Priority date: 1985-10-30
Filing date: 1985-10-30
Publication date: 1987-05-14

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例の縦断面図。第２図
は第１図の横断面Ａ―Ａ′の断面図であり、バル
ブが全開の場合を示す。第３図は同じく全閉の場
合を示す。第４図は第１図の実施例のボール３と
シートリング４，４′の外形図である。第５図は
従来のバルブの縦断面図。第６図は第５図の断面
Ａ―Ａ′の横断面図で、バルブが全開の場合を示
す。同様に第７図に全閉の場合を示す。第８図は
第６図の従来のバルブのボール３とシートリング
４，４′の外形図である。１：弁箱、２：インサート、３：ボール、４，
４′：シートリング、５：弁棒、６：パツキン、
１５：ボールポート、１６：シートリングポート
、１８：バルブポート、１９：シール球面、２４
：バルブキヤビイライ。 FIG. 1 is a longitudinal sectional view of one embodiment of the present invention. FIG. 2 is a sectional view taken along the cross section AA' in FIG. 1, and shows the valve fully open. FIG. 3 also shows the fully closed case. FIG. 4 is an external view of the ball 3 and seat rings 4, 4' of the embodiment shown in FIG. FIG. 5 is a longitudinal sectional view of a conventional valve. FIG. 6 is a cross-sectional view taken along the line AA' in FIG. 5, showing the case where the valve is fully open. Similarly, FIG. 7 shows the fully closed case. FIG. 8 is an external view of the ball 3 and seat rings 4, 4' of the conventional valve shown in FIG. 1: Valve box, 2: Insert, 3: Ball, 4,
4': seat ring, 5: valve stem, 6: seal,
15: Ball port, 16: Seat ring port, 18: Valve port, 19: Seal spherical surface, 24
: Valve caviar.

Claims

[Scope of utility model registration request]

A rotatable valve body is provided in the valve body, a seat ring is interposed between the outer peripheral surface of the valve body and the inner surface of the valve body, and the valve body is rotated by a rotating shaft outside the valve body to supply fluid. In a ball valve to be controlled, a seat ring having a spherical concave sealing surface that contacts the spherical sealing surface of a spherical valve body to form a sealing surface is cylindrical in shape, and the axial direction of the cylindrical seat ring is the valve port. The cylindrical seat ring is divided into two parts at a position approximately 45 degrees counterclockwise with respect to the axis of the valve port on a plane including the axis of the valve rotation shaft in the same direction as the axis of the valve port. ball valve.