JPS62138963U - - Google Patents

Description

【図面の簡単な説明】[Brief explanation of the drawing]

図面は本考案の実施例を示し、第１図は蝶形弁
構造の断面図、第２図は副弁部の拡大断面図、第
３図は第２図の正面図、第４図は、第３図の―
線における断面図、第５図は第３図の―線
における断面図、第６図は従来技術のバルブの断
面図を示す。 Ａ……主弁、Ｂ……副弁、１……主弁軸、２…
…副弁軸、３……スプライン結合部、４……位置
固定ネジ。 The drawings show an embodiment of the present invention, in which Fig. 1 is a sectional view of the butterfly valve structure, Fig. 2 is an enlarged sectional view of the sub-valve part, Fig. 3 is a front view of Fig. 2, and Fig. 4 is: Figure 3 -
FIG. 5 is a cross-sectional view taken along the line -- in FIG. 3, and FIG. 6 is a cross-sectional view of a prior art valve. A...Main valve, B...Sub-valve, 1...Main valve shaft, 2...
...Sub-valve shaft, 3...Spline joint, 4...Position fixing screw.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 主弁の中央に副弁を嵌装するとともに、主副両
弁を同一軸心上の主弁軸および副弁軸とでそれぞ
れの弁を回動し開閉できるように枢支して構成す
る副弁内蔵式蝶弁形において、上記副弁軸を前記
副弁の取付孔に対して進退自在にスプライン結合
するとともに、位置固定ネジを該副弁表面から前
記スプライン結合部まで延出して該副弁軸を前記
副弁に固定接続して構成したことを特徴とする副
弁内蔵式蝶形弁における副弁構造。 A sub valve is fitted in the center of the main valve, and both main and sub valves are pivoted to the main valve shaft and the sub valve shaft on the same axis so that each valve can be rotated to open and close. In the butterfly valve type with a built-in valve, the sub-valve shaft is spline-coupled to the mounting hole of the sub-valve so as to be movable forward and backward, and a position fixing screw is extended from the surface of the sub-valve to the spline joint portion to connect the sub-valve. A sub-valve structure in a butterfly valve with a built-in sub-valve, characterized in that a shaft is fixedly connected to the sub-valve.