JPH0231979U

JPH0231979U -

Info

Publication number: JPH0231979U
Application number: JP11043688U
Authority: JP
Priority date: 1988-08-22
Filing date: 1988-08-22
Publication date: 1990-02-28
Anticipated expiration: 2003-08-22
Also published as: JPH0624624Y2

Description

[Brief explanation of drawings]

第１図は全体の斜視図、第２図は要部の断面図
、第３，４図は全閉若しくは全開状態を示す全体
の正面図、第５図は平面図、第６図は案内板の斜
視図、第７，８図はボールと円弧状凹所との係脱
状態を示す縦断面図、第９図は従来例の斜視図、
第１０図は同縦断面図、第１１図は同平面図であ
る。１０……バタフライ弁、１１……弁本体、１２
……弁体、１３……弁棒、１４……軸受筒、１５
……ケーシング、１６……ガスケツト、１７……
副弁棒、１８……キー、１９……案内板、２０…
…コイルスプリング、２１……ボール、２２……
円弧状凹所、２３……ストツパー板、２４……キ
ー、２５，２６……ストツパー面、２７……中間
開度表示部、２８，２９……ストツパー突起、３
０……中間開度指示部、３１……突片、３２……
操作ハンドル、３３……溝、３４……ハンドル、
３５……ハンドル軸、３６……嵌合穴。 Figure 1 is a perspective view of the whole, Figure 2 is a sectional view of the main parts, Figures 3 and 4 are front views of the whole showing the fully closed or fully open state, Figure 5 is a plan view, and Figure 6 is a guide plate. 7 and 8 are vertical cross-sectional views showing the state of engagement and disengagement between the ball and the arcuate recess, and FIG. 9 is a perspective view of the conventional example.
FIG. 10 is a longitudinal sectional view of the same, and FIG. 11 is a plan view of the same. 10... Butterfly valve, 11... Valve body, 12
... Valve body, 13 ... Valve stem, 14 ... Bearing sleeve, 15
...Casing, 16...Gasket, 17...
Sub-valve rod, 18...key, 19...guide plate, 20...
...Coil spring, 21...Ball, 22...
Arc-shaped recess, 23... Stopper plate, 24... Key, 25, 26... Stopper surface, 27... Intermediate opening display section, 28, 29... Stopper protrusion, 3
0...Intermediate opening degree indicating section, 31...Protrusion piece, 32...
Operation handle, 33...groove, 34...handle,
35...handle shaft, 36...fitting hole.

Claims

[Claims for Utility Model Registration] (1) In a type of valve in which the valve is opened and closed by rotating the valve body, an auxiliary valve stem is connected to the valve stem that pivotally supports the valve body so that the direction of rotation is integrated; The connecting portion between the valve stem and the auxiliary valve stem is sealed with a casing fixed to the valve body,
A stopper plate that rotates together with the auxiliary valve stem is disposed on the outer surface of the casing, and a stopper protrusion is provided on the upper surface of the casing that comes into contact with the stopper surface formed on the stopper plate in the fully open or fully closed position, and extends outward from the casing. A key-shaped protrusion is provided at the tip of the auxiliary valve stem to protrude, and a keyway-shaped fitting hole is formed in the handle shaft that fits into the auxiliary valve stem to engage with the protrusion. A valve body driving device characterized in that a rod-shaped handle is attached to the tip of a handle shaft in the same direction. (2) A driving device for a valve body according to claim 1, wherein a groove extending in the longitudinal direction of the protrusion is formed on the end face of the protrusion, and the groove is colored. (3) Inside the casing, a large-diameter guide plate is provided that is integrated with the auxiliary valve stem, and the upper surface of the guide plate is used to fully open the valve.
A feature is that an arc-shaped recess is formed corresponding to the fully closed or intermediate opening position, and a ball that elastically fits into the recess is elastically biased from the upper wall of the casing toward the guide plate by a spring. A driving device for a valve body according to claim 1 or 2 of the utility model registration claim.