JPS63106971U

JPS63106971U -

Info

Publication number: JPS63106971U
Application number: JP20385586U
Authority: JP
Priority date: 1986-12-26
Filing date: 1986-12-26
Publication date: 1988-07-11

Description

[Brief explanation of the drawing]

第１図は横形緊急遮断弁を一部破断した正面図
、第２図は弁軸と駆動軸とを筒継手により連結す
る態様を示す斜視図、第３図は筒継手の展開図、
第４図乃至第９図は弁体に対する筒継手の作動説
明図、第１０図乃至第１１図は本考案の他の実施
例を示す図である。３…弁体、４…弁軸、５…ウエイト、７…ロツ
ク装置、８…ロツク解除装置、１０…開閉機、１
２…駆動軸、１６，１６Ａ，１６Ｂ…筒継手、１
７…カム溝、１８，１９…摺動部材（ピン）。 Fig. 1 is a partially cutaway front view of a horizontal emergency shutoff valve, Fig. 2 is a perspective view showing how the valve shaft and drive shaft are connected by a cylinder joint, and Fig. 3 is a developed view of the cylinder joint.
FIGS. 4 to 9 are explanatory views of the operation of the cylinder joint with respect to the valve body, and FIGS. 10 to 11 are views showing other embodiments of the present invention. 3...Valve body, 4...Valve shaft, 5...Weight, 7...Lock device, 8...Lock release device, 10...Switcher, 1
2... Drive shaft, 16, 16A, 16B... Tube joint, 1
7...Cam groove, 18, 19...Sliding member (pin).

Claims

[Claims for Utility Model Registration] (1) A valve with a butterfly structure that opens and closes a pipeline by rotating a valve body together with a valve stem, the valve body being connected to the valve stem and attached in the direction of closing the valve. A closing device that applies force, a lock device that holds the valve body in the open state under normal conditions, a lock release device that unlocks the lock device in an emergency, and a return device that returns the valve body to the open state after emergency shutoff. In horizontal and vertical emergency shutoff valves, the valve shaft of the valve body and the drive shaft of the return device are inclined at a predetermined angle in the longitudinal direction of the shaft and are equivalent to the opening/closing angle of the valve body in the circumferential direction. or interposing a cylindrical joint having a cam groove of longer length formed therethrough, and engaging the sliding member provided on the valve shaft and the drive shaft with the cam groove of the cylindrical joint;
A valve shaft drive joint for an emergency shutoff valve, characterized in that the drive shaft has play in the rotational direction and is slidable in the axial direction. (2) The cylindrical joint in which the cam groove is formed is provided integrally with either the valve shaft or the drive shaft, and the sliding member provided on either the valve shaft or the drive shaft is connected to the cam. A valve shaft drive joint for an emergency shutoff valve according to claim 1, which is characterized in that it engages with a groove.