| 摘要 |
<p>PURPOSE:To dispense with any linking mechanism for linking a pressing mechanism with moving pieces by providing an auxiliary pressing mechanism for pressing the moving pieces by the movement of an extruding member, and for extruding the moving pieces in the direction perpendicular to the inserting direction. CONSTITUTION:A synthetic rubber-made elastic seal member 10 to be elastically deformed by pressing by a pressing mechanism 5, and to be bonded to the pipe inner surface side is provided on a sluicing valve body 2. Moreover, an auxiliary pressing mechanism 13 for extruding a pair of right and left, metallic, and hard moving pieces 12 in the direction perpendicular to the valve rod shaft core X direction, and pressing the elastic seal member 10 to the pipe inner surface side in the direction perpendicular to the X direction by means of the moving pieces 12 is provided. That is, in the auxiliary pressing mechanism 13, a connecting plate 20 is an extruding member for pressing the moving pieces 12 by the movement along the X direction according to the elastic deformation of the elastic seal member 10, and extruding the moving pieces 12 in the direction perpendicular to the X direction. Moreover, it is a hard supporting member for slidably and movably supporting the moving pieces 12 of a cylindrical metal fitting 23 in the direction perpendicular to the X direction.</p> |
