JPH03104582U

JPH03104582U -

Info

Publication number: JPH03104582U
Application number: JP1294690U
Authority: JP
Priority date: 1990-02-13
Filing date: 1990-02-13
Publication date: 1991-10-30

Description

[Brief explanation of drawings]

第１図は、本考案になる遮断弁の一実施例を示
す縦断面図、第２図は第１図の弁体を含む棒状突
部を下方よりみた平面図、第２図は棒状突部を下
方よりみた平面図、第３図は流路内における液体
の圧力状態を示す線図である。１……弁本体、３……弁孔、４……弁座、５…
…弁体、２０……棒状突部、２０Ａ……先端部、
２０Ｂ……後端部、Ａ……弁体５による弁座４の
閉塞時における弁体５の弁座４との当接部、φＢ
……弁体５の長手軸心方向Ｘ−Ｘをはさんで最も
外側部にある棒状突部２０，２０間の外側径、φ
Ｃ……弁孔３の直径。 FIG. 1 is a longitudinal sectional view showing an embodiment of the shutoff valve of the present invention, FIG. 2 is a plan view of the rod-shaped protrusion including the valve body shown in FIG. 1, viewed from below, and FIG. 2 is a rod-shaped protrusion FIG. 3 is a diagram showing the pressure state of the liquid in the flow path. 1... Valve body, 3... Valve hole, 4... Valve seat, 5...
... Valve body, 20 ... Rod-shaped protrusion, 20A ... Tip part,
20B...Rear end portion, A...Abutting portion of the valve body 5 with the valve seat 4 when the valve seat 4 is closed by the valve body 5, φB
...The outer diameter between the rod-like protrusions 20, 20 at the outermost part across the longitudinal axis direction XX of the valve body 5, φ
C...Diameter of valve hole 3.

Claims

[Claims for Utility Model Registration] A valve seat 4 connected to the valve hole 3 is provided in the middle part of the flow path 2 passing through the valve body 1, and the flow path 2 is connected to the upstream flow path 2A and the valve hole 3 by the valve seat 4. In the shutoff valve, the cutoff valve is equipped with a valve body 5 that separates the flow path into a downstream flow path 2B including a flow path 2B and controls the effective opening area of the valve seat 4 while facing the valve seat 4, when the valve seat 4 is closed by the valve body 5. The valve holes 3 on the downstream side of the abutting portion A of the valve body 5 with the valve seat 4 are provided with a gap between them in a direction along the opening/closing movement direction DD of the valve body 5 and in a direction substantially orthogonal to the opening/closing movement direction DD. A plurality of rod-shaped protrusions 20 are provided,
The outer diameter φB between the rod-like protrusions 20, 20 at the outermost part of the rod-like protrusions 20 sandwiching the longitudinal axis direction XX of the valve body 5 is made slightly smaller than the diameter φC of the valve hole 3. A shutoff valve in which a protrusion 20 is moved synchronously with a valve body 5.