JPH0454306U - - Google Patents
Info
- Publication number
- JPH0454306U JPH0454306U JP9793590U JP9793590U JPH0454306U JP H0454306 U JPH0454306 U JP H0454306U JP 9793590 U JP9793590 U JP 9793590U JP 9793590 U JP9793590 U JP 9793590U JP H0454306 U JPH0454306 U JP H0454306U
- Authority
- JP
- Japan
- Prior art keywords
- valve
- bellows
- piston
- axial direction
- small
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000005540 biological transmission Effects 0.000 claims description 3
- 239000012530 fluid Substances 0.000 claims 3
- 238000007789 sealing Methods 0.000 claims 1
Landscapes
- Fluid-Driven Valves (AREA)
- Details Of Valves (AREA)
- Actuator (AREA)
Description
第１図は、本考案の一実施例に係る弁の開閉駆
動機構及びこれにより駆動される弁の断面図、第
２図は、第１図に示された弁本体の断面図であつ
て弁が閉成する直前を示す図、第３図は、第２図
に示す矢印の矢視図、第４図は、第１図に示し
た本実施例に係る弁の開閉駆動機構の拡大断面図
、第５図は、第４図の−線に沿う断面図、第
６図は、第４図の−線に沿う断面図である。
１３……弁座、１５……弁体、３１……ピスト
ン、３１ｂ……小径スリーブ、３１ｄ……加圧端
面（右端面）、３４ａ，３５ａ……筒状壁、４１
……シール部材（Ｏリング）、５０……動力伝達
部材（スクリユー）、１０３……ベローズ、Ｂ…
…シリンダ室（第２シリンダ室）。
FIG. 1 is a sectional view of a valve opening/closing drive mechanism and a valve driven thereby according to an embodiment of the present invention, and FIG. 2 is a sectional view of the valve main body shown in FIG. 3 is a view taken in the direction of the arrow shown in FIG. 2, and FIG. 4 is an enlarged sectional view of the valve opening/closing drive mechanism according to the present embodiment shown in FIG. 1. , FIG. 5 is a sectional view taken along the - line in FIG. 4, and FIG. 6 is a sectional view taken along the - line in FIG. 4. 13... Valve seat, 15... Valve body, 31... Piston, 31b... Small diameter sleeve, 31d... Pressurized end surface (right end surface), 34a, 35a... Cylindrical wall, 41
... Seal member (O ring), 50 ... Power transmission member (screw), 103 ... Bellows, B...
...Cylinder chamber (second cylinder chamber).
Claims (1)
圧を作用させて、ピストンを軸方向に移動させ、
その結果、動力伝達部材を軸方向に移動させて弁
体を弁座に対して移動させ、弁を開閉するための
弁の開閉駆動機構であつて、 一端がピストンの環状の加圧端面の径方向内方
に連結され、他端が動力伝達部材を摺動可能に支
持したハウジングの筒状固定部材に連結され、ピ
ストンの移動に追随して伸縮し、ピストンとこの
筒状固定部材との隙間を介して弁体側の流体が外
部に漏れることを防止するベローズと、 ピストンの環状の加圧端面の径方向内方から、
前記ベローズを覆うように、軸方向延出された小
径スリーブと、 この小径スリーブを摺動可能に支持するように
、ハウジングに形成された筒状壁と、 小径スリーブの外周と筒状壁の内周との間の隙
間を密封するシール部材とを具備することを特徴
とする弁の開閉駆動機構。[Claims for Utility Model Registration] Fluid pressure in the cylinder chamber is applied to the annular pressurized end surface of the piston to move the piston in the axial direction,
As a result, a valve opening/closing drive mechanism for opening and closing the valve by moving the power transmission member in the axial direction and moving the valve body relative to the valve seat, one end of which is the diameter of the annular pressurizing end surface of the piston. The other end is connected to the cylindrical fixing member of the housing that slidably supports the power transmission member, and expands and contracts with the movement of the piston to reduce the gap between the piston and this cylindrical fixing member. a bellows that prevents fluid from leaking to the outside through the bellows, and a bellows that prevents fluid from leaking to the outside through the bellows,
a small-diameter sleeve extending in the axial direction so as to cover the bellows; a cylindrical wall formed in the housing so as to slidably support the small-diameter sleeve; and an outer periphery of the small-diameter sleeve and an inner surface of the cylindrical wall. 1. A valve opening/closing drive mechanism, comprising: a sealing member that seals a gap between the valve and the periphery of the valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9793590U JPH0725498Y2 (en) | 1990-09-18 | 1990-09-18 | Valve opening / closing drive mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9793590U JPH0725498Y2 (en) | 1990-09-18 | 1990-09-18 | Valve opening / closing drive mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0454306U true JPH0454306U (en) | 1992-05-11 |
| JPH0725498Y2 JPH0725498Y2 (en) | 1995-06-07 |
Family
ID=31838717
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9793590U Expired - Lifetime JPH0725498Y2 (en) | 1990-09-18 | 1990-09-18 | Valve opening / closing drive mechanism |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0725498Y2 (en) |
-
1990
- 1990-09-18 JP JP9793590U patent/JPH0725498Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0725498Y2 (en) | 1995-06-07 |
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