JPH0388075U

JPH0388075U -

Info

Publication number: JPH0388075U
Application number: JP14989389U
Authority: JP
Priority date: 1989-12-26
Filing date: 1989-12-26
Publication date: 1991-09-09
Anticipated expiration: 2004-12-26
Also published as: JP2522116Y2

Description

[Brief explanation of the drawing]

第１図は本考案の手動操作用ロツク装置の１実
施例を有するバタフライバルブの縦断面図、第２
図は第１図の状態からコネクタを押し下げた状態
を示す部分縦断面図、第３図は第１図のＸ−Ｘ断
面を矢視した横断面図、第４図は背面図のＷ−Ｗ
断面を示す横断面図である。また、第５図は第１
図のＹ−Ｙ位置の第３図にＺ−Ｚで示したほぼ半
周を矢の方向に見た断面展開図、第６図は第５図
の他の実施例を示す断面展開図、第７図は第４図
の他の実施例を示す横断面図である。更に、第８
図は、従来のロツク装置付き手動操作バタフライ
バルブの縦断面図である。１……バタフライバルブ、２……手動操作用ロ
ツク装置、３……ボデー、５……弁軸、６……コ
ネクタ、６ａ……手動操作部、６ｂ……外周面、
７……キヤツプ、７ａ……内周面、７ｂ……係止
溝、７ｃ……回動溝、８……発条、９……ストツ
パプレート、１０……ストツパピン、１１……ボ
ルト、１２……スプリングピン（外方突起）、１
３……セツトスクリユー。 Fig. 1 is a vertical sectional view of a butterfly valve having an embodiment of the manual operation locking device of the present invention;
The figure is a partial vertical cross-sectional view showing the state in which the connector is pushed down from the state in Figure 1, Figure 3 is a cross-sectional view taken along the line X-X in Figure 1, and Figure 4 is a rear view taken along the line W-W.
It is a cross-sectional view showing a cross section. Also, Figure 5 shows the first
FIG. 3 is a cross-sectional developed view of approximately half the circumference indicated by Z-Z at the Y-Y position in the figure, viewed in the direction of the arrow; FIG. 6 is a cross-sectional developed view showing another embodiment of FIG. 5; This figure is a cross-sectional view showing another embodiment of FIG. 4. Furthermore, the eighth
The figure is a longitudinal sectional view of a conventional manually operated butterfly valve with a locking device. DESCRIPTION OF SYMBOLS 1...Butterfly valve, 2...Lock device for manual operation, 3...Body, 5...Valve stem, 6...Connector, 6a...Manual operation part, 6b...Outer peripheral surface,
7... Cap, 7a... Inner peripheral surface, 7b... Locking groove, 7c... Rotating groove, 8... Spring, 9... Stopper plate, 10... Stopper pin, 11... Bolt, 12... ...Spring pin (outward projection), 1
3... Set Screw.

Claims

[Claims for Utility Model Registration] (1) A locking device for manual operation of a valve such as a butterfly valve that is opened and closed by rotating the valve stem approximately 90 degrees, and the locking device for manual operation a connector fitted above the valve shaft so as to be non-rotatable but slidable in the axial direction with respect to the valve shaft; and an inner peripheral surface on which the outer peripheral surface of the connector slides and is fixed to the valve. The cap consists of a cap, a spring that pushes the connector upward with elastic force, a stopper plate fixed to the valve stem, and a stopper pin fixed to either or both of the valve and the cap. In this case, the connector is pushed up by the elastic force of the spring and the outer protrusion provided on the connector is locked when the valve is in the fully open and fully closed positions and, if necessary, at a specific position in between. a locking groove that allows the outer protrusion to rotate between a fully open position and a fully closed position when the connector is pushed down against the elastic force of the spring. A locking device for manual operation, characterized in that the stopper plate abuts the stopper pin in the fully open and fully closed positions of the valve. 2. The manually operated locking device according to claim 1, wherein the connector is fixed to the cap by a set screw screwed into the cap from the side. (3) The locking groove formed at a specific position between fully open and fully closed is shaped so that the outer protrusion can be easily removed from the locking groove only when the connector is rotated in the closing direction. 3. The manual operation locking device according to claim 1 or 2. (4) The manual operation lock device according to any one of claims 1 to 3, wherein the stopper pin is a bolt that tightens the cap to the valve.