JPH04125366A - Eccentric valve - Google Patents
Eccentric valveInfo
- Publication number
- JPH04125366A JPH04125366A JP24515790A JP24515790A JPH04125366A JP H04125366 A JPH04125366 A JP H04125366A JP 24515790 A JP24515790 A JP 24515790A JP 24515790 A JP24515790 A JP 24515790A JP H04125366 A JPH04125366 A JP H04125366A
- Authority
- JP
- Japan
- Prior art keywords
- valve
- valve seat
- box
- eccentric
- sleeve
- 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
- 230000002093 peripheral effect Effects 0.000 claims abstract description 5
- 230000000694 effects Effects 0.000 description 4
- 238000011144 upstream manufacturing Methods 0.000 description 4
- 239000002002 slurry Substances 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
Landscapes
- Lift Valve (AREA)
Abstract
Description
【発明の詳細な説明】
[産業上の利用分野]
本願発明は偏心弁、すなわち回動自在の弁軸に偏心して
固着した円弧状弁体弁座面の中心軸が円弧状弁箱弁座面
の中心軸と一致したとき全閉鎖となる偏心弁に係る。[Detailed Description of the Invention] [Industrial Application Field] The present invention is an eccentric valve, that is, a valve body whose central axis is eccentrically fixed to a rotatable valve shaft and whose central axis is an arcuate valve body valve seat surface. This relates to an eccentric valve that is fully closed when it coincides with the central axis of the valve.
[従来の技術]
従来から使用している偏心弁の基本的形態は、第8図か
ら第10図に示すように弁軸52の回動とともに回動す
る弁体の円弧状弁座面54の中心軸Ovaは、弁軸の中
心軸Osaに対してEvaだけ偏心しているので、弁軸
の回動とともに弁座面の中心軸も移動しつつ全体として
回動し、はぼ90°回動して開閉する。[Prior Art] As shown in FIGS. 8 to 10, the basic form of eccentric valves conventionally used is that the valve body has an arc-shaped valve seat surface 54 that rotates with the rotation of the valve shaft 52. Since the center axis Ova is eccentric by Eva with respect to the center axis Osa of the valve stem, as the valve stem rotates, the center axis of the valve seat surface also moves and rotates as a whole, rotating approximately 90 degrees. to open and close.
この型式の弁か全閉鎖の位置におかれたときには前記の
弁体弁座面の中心軸Ovaが移動してきた結果、弁箱下
流側に設けた円弧状の弁箱弁座面55の中心軸0vea
と一致し、この時点で両円弧が重なって弁座面が富者状
態となる。When this type of valve is placed in the fully closed position, the central axis Ova of the valve body valve seat surface moves, resulting in the central axis of the arc-shaped valve body valve seat surface 55 provided on the downstream side of the valve body. 0vea
At this point, both arcs overlap and the valve seat surface becomes in a rich state.
このように弁体と弁箱の弁座面同士が完全に密着するの
は弁閉鎖時のみであり、それまでは偏心のずれのため相
互に密着して摺動する範囲を非常に小さくすることがで
き、弁座の摩耗や負荷トルクを軽減し、シール機能も向
上し、他の型式の弁に比べるとスラリーヤ固形異物の混
在する汚濁水路に適性がおって、異物の噛み込みなどの
機会が少く長期の使用に耐え得ると言う評価が定着して
いる。In this way, the valve body and the valve seat surface of the valve body are in complete contact with each other only when the valve is closed, and until then, due to eccentricity, the range in which they slide in close contact with each other is extremely small. This reduces wear on the valve seat and load torque, and improves the sealing function.Compared to other types of valves, the slurry is suitable for use in polluted waterways where solid foreign matter is mixed, reducing the chance of foreign matter getting caught. It has an established reputation as being able to withstand long-term use.
[発明が解決しようとする課題]
偏心弁は上記のように弁箱と弁体の弁座面同士の摺動範
囲の小さいのが特徴でおるが、管路内を固形物を多く含
む汚濁液が終始流れるとき、すなわち弁開の状態におい
ては弁体の弁座面は流路の軸とほぼ平行でかつ弁箱の上
部又は下部の片隅に位置するので汚濁液の悪影響を受け
る虞れは比較的小さいが、弁箱の弁座面は流れに直接真
正面から対向し汚濁液内のスラlノーや固形異物が衝突
して摩耗、損傷を早め弁座面同士の密着性が失なわれて
弁機能に支障を来す虞れがおる。[Problems to be Solved by the Invention] As mentioned above, eccentric valves are characterized by a small sliding range between the valve seat surfaces of the valve body and the valve body. When fluid flows from beginning to end, that is, when the valve is open, the valve seat surface of the valve body is approximately parallel to the axis of the flow path and located at one corner of the upper or lower part of the valve body, so there is less risk of being adversely affected by contaminated fluid. Although the target is small, the valve seat surface of the valve body faces the flow head-on, and slurry and solid foreign matter in the polluted liquid collide with each other, accelerating wear and damage and causing loss of adhesion between the valve seat surfaces. There is a risk that functionality may be affected.
このために弁体の弁座面は未だ健在であるにも拘らず、
弁箱弁座面の摩耗劣化のために弁を更新しなければなら
なくなるケースが頻発し、管路の保全上大きな課題とな
っている。For this reason, even though the valve seat surface of the valve body is still intact,
There are frequent cases in which valves must be replaced due to wear and deterioration of the valve seat surface of the valve box, creating a major issue in the maintenance of pipelines.
本願発明は以上に述べた課題を解決するため弁体弁座の
損耗による弁の機能劣化を回復し耐用年数をほぼ倍増す
る新規な偏心弁の提供を目的とする。In order to solve the above-mentioned problems, the present invention aims to provide a novel eccentric valve that can recover from functional deterioration of the valve due to wear and tear on the valve body and valve seat, and can almost double its service life.
[課題を解決するための手段コ
本願発明に係る偏心弁は、弁の流線軸をFxとし、Fx
と中心点Oにおいて直交する軸をFyとするとき、中心
点Oを対称点として流路の前後に対してFx上を中心点
QからEsだけ偏心した中心軸Obを中心とする円弧状
の弁箱弁座面をそれぞれ対設し、弁箱の上下面へ外周中
心軸が中心点Oを通るスiノーブを解放も可能にv、@
シ、スリーブの内周面は前記Fxと90°乃至O°間の
角度βを以って斜めに交叉する線上にEs偏心する点を
中心とする弁軸を拘束も可能に内嵌し、該弁軸の中心軸
Osを中心とする半径Evの円弧を画いて移動する弁体
弁座面の中心軸軌跡上に弁箱弁座面の中心軸Obが遭遇
し、弁軸中心軸Osは中心点Oに対しFx方向にEb、
Fy方向にLs偏心し、
Ev=LsかつLs=EsS!nβ
が成立することによって前記の課題を解決した。[Means for Solving the Problems] The eccentric valve according to the present invention has a streamline axis of the valve as Fx, and Fx
When Fy is an axis perpendicular to the center point O, an arc-shaped valve centered on the center axis Ob eccentric from the center point Q by an amount Es on Fx with respect to the front and rear of the flow path with the center point O as the point of symmetry. The box valve seat surfaces are arranged opposite each other, making it possible to release the Sinobe whose outer peripheral center axis passes through the center point O to the top and bottom surfaces of the valve box.
The inner circumferential surface of the sleeve fits inside the sleeve so as to be able to restrain the valve shaft centered at a point Es eccentric on a line diagonally intersecting Fx with an angle β between 90° and 0°. The central axis Ob of the valve body valve seat surface encounters the central axis trajectory of the valve body valve seat surface, which moves in an arc of radius Ev centered on the central axis Os of the valve shaft, and the valve shaft central axis Os is at the center. Eb in the Fx direction with respect to point O,
Ls eccentricity in Fy direction, Ev=Ls and Ls=EsS! The above problem was solved by establishing nβ.
なお、より具体的な実施態様については後)ホする。Note that more specific embodiments will be discussed later.
[作用1
第1図は本願発明の実施例を示すが、弁の流線軸をFx
、中心点0て直交する軸をFyとする。[Function 1 Figure 1 shows an embodiment of the present invention, where the streamline axis of the valve is Fx
, the axis perpendicular to the center point 0 is Fy.
弁箱1の下流側と上流側に中心点Oを対称に円弧状の第
−弁箱弁座面5.第二弁箱弁座面6をそれぞれ対設する
が、この両円弧の曲率半径の中心は何れも中心点Oから
上流側、下流側へ向けて等距離(Eb)だけ隔てたOb
l、Ob2にある。弁箱1の上下にスリーブ13八、1
3Bをそれぞれ装@するが、この特徴として当該スリー
ブは弁箱と一体的に固着されるが所望の場合には弁箱と
の拘束から解放されて自由に回動できる構成をとる。A third valve seat valve seat surface 5 in an arc shape symmetrically about the center point O on the downstream side and upstream side of the valve body 1. The second valve box valve seat surfaces 6 are provided opposite each other, and the centers of the curvature radii of both arcs are Ob, which is equidistant (Eb) away from the center point O toward the upstream and downstream sides.
l, located in Ob2. Sleeves 138, 1 are placed above and below the valve box 1.
3B respectively, and the feature is that the sleeve is fixed integrally with the valve body, but if desired, it is freed from the restriction to the valve body and can freely rotate.
スリーブの内周面の中心は偏心していてFxと90°乃
至Ooの間の角度βを形成する線上に中心軸のある駆動
用、支持用の弁軸11および12をそれぞれ内嵌してい
るか、この特徴としてスリーブと各弁軸とは所望の場合
に回動不能に拘束し、一体的に共回りできる構成を採る
ことである。The center of the inner circumferential surface of the sleeve is eccentric, and drive and support valve shafts 11 and 12, each having a central axis on a line forming an angle β between 90° and Oo with Fx, are fitted therein, or A feature of this is that the sleeve and each valve shaft are restrained so as not to rotate when desired, and are constructed so that they can rotate together as one unit.
第3図と第4図はこの実施例の通常の弁開閉時の作用を
示した水平断面図およびその説明図であって、Fyが流
路の軸線Fxと中心点Oで直交している。中心点Oから
Ebだけ離れた弁箱弁座面中心軸Ob1.Ob2に足し
、Fxと角度βで交叉する線上にある弁箱中心軸Os、
+ 052を中心に半径Evの円弧を画いて弁体弁座面
の中心軸Ovが動き、Obと一致した状態で両者の曲面
が重なって弁閉鎖(第3図の実線)となる。3 and 4 are horizontal cross-sectional views and explanatory views thereof showing the normal valve opening/closing operation of this embodiment, in which Fy is perpendicular to the axis Fx of the flow path at the center point O. The central axis Ob1 of the valve seat surface of the valve box is separated by Eb from the center point O. The valve box center axis Os, which is added to Ob2 and lies on the line that intersects Fx at angle β,
The central axis Ov of the valve seat surface of the valve element moves in an arc of radius Ev centered on +052, and the curved surfaces of both overlap in a state that coincides with Ob, resulting in the valve being closed (solid line in FIG. 3).
本願発明の構成上の特徴は次の独自の作用を可能とする
。The structural features of the present invention enable the following unique effects.
すなわち主として弁箱弁座面の摩耗などによって弁機能
が劣化し使用に耐え得ないと判断されるに至ったとき、
従来使用してきた第−弁箱弁座面5に替えて第二弁箱弁
座面6を使用することである。In other words, when the valve function has deteriorated mainly due to wear on the valve seat surface of the valve box and it has been determined that the valve is no longer usable,
A second valve box valve seat surface 6 is used in place of the conventionally used first valve seat valve seat surface 5.
第3図の2点鎖線のように弁体が閉鎖(実線)から90
°回動して開いている状態から新しい弁箱弁座面(図の
左側)へ使用を切り替える手順を第5図より第7図に基
づいて説明する。As shown in the two-dot chain line in Figure 3, the valve body is 90 degrees from closed (solid line).
The procedure for changing the use from the rotated open state to the new valve seat valve seat surface (left side in the figure) will be explained based on FIGS. 5 to 7.
(1)第5図のようにこの状態(点線)のままスリーブ
13A、13Bと弁箱1との拘束を解きスリーブが弁箱
内で自由に回動てきるようにするとともに、スリーブと
弁軸とを拘束して両者が一体的に共回りするようにする
。(1) As shown in Figure 5, in this state (dotted lines), release the restraint between the sleeves 13A, 13B and the valve body 1 so that the sleeves can freely rotate within the valve body, and also and so that they rotate together as one.
(2)弁軸11を180°回動すると、弁軸とともにス
リーブも弁箱内で回動し第6図の点線の位置にくる。(2) When the valve stem 11 is rotated by 180 degrees, the sleeve also rotates within the valve body along with the valve stem, and comes to the position indicated by the dotted line in FIG.
(3)再びスリーブ13A、13Bをこの位置で弁箱1
と一体的に拘束し、スリーブと弁箱との拘束を解放する
。(3) Re-install the sleeves 13A and 13B into the valve box 1 at this position.
This releases the restraint between the sleeve and the valve box.
(4)弁体は第7図2点鎖線のように弁開状態となり、
ざらに時計方向へ90’回動すると同図実線のように弁
体弁座面は第二弁箱弁座面(左側)6へ密着して新しい
弁閉鎖の係合関係か生れる。(4) The valve body is in the open state as shown by the two-dot chain line in Figure 7,
When the valve body is roughly rotated 90' clockwise, the valve seat surface of the valve body comes into close contact with the second valve body valve seat surface (left side) 6, as shown by the solid line in the figure, and a new valve closing engagement relationship is established.
[実施例]
以下前項の記述との重複を避けて実施例の詳細を説明す
る。[Example] The details of the example will be described below to avoid duplication with the description in the previous section.
第1〜3図において、1は流入口2と流出口3との間に
弁体収納室4を設けた弁箱で、弁体収納室4の下流側(
流出口3側)には円弧状の第1弁箱弁座5.上流側(流
入口2側)には円弧状の第2弁箱弁座6が設けられてい
る。7は断面レンズ状で外面にゴムなどの被iGを施さ
れ、円弧状の弁体弁座面8が前記の弁箱床5.6面に係
合する弁体で、ハブ9,10を介して駆動用弁軸11゜
支持用弁軸12に固定されている。In Figures 1 to 3, 1 is a valve box in which a valve body storage chamber 4 is provided between an inlet 2 and an outlet 3, and the downstream side of the valve body storage chamber 4 (
On the outflow port 3 side) there is an arc-shaped first valve box valve seat 5. An arc-shaped second valve box valve seat 6 is provided on the upstream side (inflow port 2 side). Reference numeral 7 designates a valve body which has a lens-shaped cross section and is coated with rubber or the like on its outer surface, and whose valve seat surface 8 is in the shape of an arc and engages with the aforementioned valve box floor surface 5.6. The driving valve shaft 11° is fixed to the supporting valve shaft 12.
13A、13Bは間接または直接にそれぞれ弁箱1に嵌
装固定されたスリーブで、これらスリーブ13A、13
Bの内周部材16A、16sはそれぞれ駆動用弁軸11
と支持用弁軸12を支持しており、弁軸11i2の中心
軸はスリーブ13A、13B外周の中心軸0からEsだ
け偏心し、弁体弁座8が第1弁箱弁座5と係合可能な状
態にあるときOs1.弁体弁座8が第2弁箱弁座6と係
合可能な状態にあるときOS 2の位置でそれぞれ流路
軸線Fxと直交する。13A and 13B are sleeves that are indirectly or directly fitted and fixed to the valve body 1, respectively, and these sleeves 13A and 13
The inner peripheral members 16A and 16s of B are the driving valve shafts 11, respectively.
and supporting valve shaft 12, the center axis of the valve shaft 11i2 is eccentric from the center axis 0 of the outer periphery of the sleeves 13A, 13B by Es, and the valve body valve seat 8 engages with the first valve body valve seat 5. When possible, Os1. When the valve body valve seat 8 is in a state where it can engage with the second valve body valve seat 6, the valve body valve seat 8 is perpendicular to the flow path axis Fx at the position of OS 2.
この実施例では弁箱弁座面の中心軸Obは弁箱中心軸O
sに対しFx線上から垂直にFy力方向Lsの距離にあ
るからEv=Lsなる関係が成立する。In this embodiment, the central axis Ob of the valve seat surface of the valve box is the central axis O of the valve box.
Since it is perpendicular to Fy force direction Ls at a distance from the Fx line with respect to s, the relationship Ev=Ls holds true.
なお、弁体が弁箱内で180°回動するためにはスリー
ブ外周の中心軸Oから弁箱弁座面までの最短距離がスリ
ーブ外周の中心軸から弁体弁座面までの最長距離よりも
大であることが要件となりしs<Esが条件であり、L
b=Essin(3なる関係が付加される。In addition, in order for the valve body to rotate 180° within the valve body, the shortest distance from the center axis O of the sleeve outer circumference to the valve body valve seat surface must be longer than the longest distance from the center axis of the sleeve outer circumference to the valve body valve seat surface. The requirement is that s<Es is large, and the condition is that L
b=Essin (3 relationship is added.
スリーブと弁箱との解放実施例としてはスリーブ13A
、13Bに弁箱]の上下面15八、15Bと一致する鍔
14A、14s@設け、両者に跨設するブラケット21
八、21Bを固定ボルト24A、24Bによって止着し
又は解放する。Sleeve 13A is an example of release between the sleeve and the valve body.
, 13B are provided with flanges 14A and 14s@ that match the upper and lower surfaces 158 and 15B of the valve box, and a bracket 21 that straddles both.
8. Fix or release 21B with fixing bolts 24A, 24B.
なおスリーブは解放状態においても弁箱内で回動自在と
なるだけで拘束ボルト2OA、20Bの働きによって弁
箱を離脱することはない。Note that even in the released state, the sleeve is only rotatable within the valve box and does not come off from the valve box due to the action of the restraining bolts 2OA and 20B.
スリーブと弁軸との拘束実施例は前記のブラケット21
A、21Bに進退自在の固定ボルト22A、22Bを螺
合し、弁軸11,12の相応する位置に係合穴23A、
23Bを凹設し、この穴内へ固定ボルトの先端を嵌合係
止して回動を共にするように拘束する。その他17A、
17B、18A、18Bはバッキング、19A、19s
はバッキング押えである。An example of restraint between the sleeve and the valve stem is the above-mentioned bracket 21.
Screw fixing bolts 22A and 22B that can move forward and backward into A and 21B, and insert engagement holes 23A and 22B into corresponding positions of valve shafts 11 and 12, respectively.
23B is recessed, and the tip of the fixing bolt is fitted and locked into this hole to restrain it from rotating together. Others 17A,
17B, 18A, 18B are backing, 19A, 19s
is the backing foot.
[発明の効果]
本願発明に係る偏心弁は特に固形物、スラリーなと擦過
摩耗の発生しやすい汚濁液などの管路に使用すれば従来
の偏心弁に比べてほぼ倍に等しい耐用年限を得る効果が
ある。[Effects of the Invention] The eccentric valve according to the present invention has a service life that is almost twice as long as that of conventional eccentric valves when used in pipes containing solid materials, slurry, and other polluted liquids that are prone to abrasion and abrasion. effective.
特に摩耗条件下の弱点にめる弁箱弁座面については、偏
心弁の本質が特殊な偏心状態の組合せであるから、単に
上流側、下流側に対向する二面の弁箱弁座面を対設した
だけでは、弁構造が形成できず、−旦弁体を弁箱から取
外してそれまでと逆偏心の状態を形成するように組立て
なければならず、当然煩須な手業とその間の断水という
耐え難い犠牲を甘受しなければならない。In particular, regarding the valve seat surface of the valve box, which is considered a weak point under wear conditions, since the essence of an eccentric valve is a combination of special eccentric conditions, it is simply a matter of the two valve seat surfaces of the valve box facing on the upstream and downstream sides. The valve structure cannot be formed just by placing them oppositely, and the valve body must be removed from the valve body and assembled to form the oppositely eccentric state, which naturally requires tedious manual labor and time. They have to accept the unbearable sacrifice of water cutoff.
ここに偏心弁の正逆反転使用の障害があったが本願発明
はこの課題を克服して断水することなく容易に逆偏心し
て機能を再生することができる。Here, there was a problem in using the eccentric valve in normal and reverse directions, but the present invention overcomes this problem and can easily reverse eccentricity and restore the function without water outage.
この効果は管路の保全上優先的な評価に繋がるポイント
と言えよう。This effect can be said to be a point that leads to priority evaluation in terms of conduit maintenance.
その他副次的には、偏心弁を汚濁水管路に横形(弁軸が
水平方向)で使用する場合、全開のとき弁体が天地方向
の地側におると、弁体の弁座面と弁箱の内周壁との間に
固形異物を噛み込み、弁体の弁座面を損傷するとか、開
閉不能に陥るなどのトラブルのおそれがあるが、この発
明のものは設計ミスや取付工事ミスなどが原因で、弁体
が地側になったとしても、容易に入側に変更することが
できるという効果もある。Another secondary issue is that when an eccentric valve is used horizontally (valve shaft is horizontal) in a polluted water pipeline, if the valve body is on the bottom side in the vertical direction when fully open, the valve seat surface of the valve body There is a risk of solid foreign matter getting caught between the inner circumferential wall of the box and damaging the valve seat surface of the valve body, or making it impossible to open and close the valve, but this invention is free from design errors, installation work errors, etc. Even if the valve body is on the bottom side due to this, there is also the effect that it can be easily changed to the entry side.
第1図はこの発明の実施例の正面縦断面図、第2図は同
側面図、第3図は同平面断面図、第4図は第3図の要部
の説明図、第5〜7図はこの発明の実施例の作用説明図
(第5.6は平面図、第7図は平面断面図)、第8図は
従来例の正面縦断面図、第2図は同側面図、第3図は同
平面断面図。
1・・・・・・弁箱、5・・・・・・第1弁箱弁座面6
・・・・・・第2弁箱弁座面、7・・・・・・弁体8・
・・・・・弁体弁座面、11・・・・・・駆動用弁軸1
2・・・・・・支持用弁軸、13A、13B・・・・・
・スリーブ14A、 143・・・・・・鍔、15A・
・・・・・弁箱上面、153・・・・・・弁箱下面、2
1A、213・・・・・・ブラケット22A、22B・
・・・・・固定ボルト23A、 23s・・・・・・係
合穴
O・・・・・・スリーブ外周の中心軸、中心点Os 、
+ OS 2・・・・・・弁軸の中心軸Ob+、Ob2
・・・・・・弁箱弁座面の中心軸Ov−・・・・・弁体
弁座面の中心軸
Fx・・・・・・流路軸線Fig. 1 is a front longitudinal cross-sectional view of an embodiment of the present invention, Fig. 2 is a side view of the same, Fig. 3 is a plan cross-sectional view of the same, Fig. 4 is an explanatory diagram of the main parts of Fig. 3, and Fig. 5-7 The figures are action explanatory diagrams of the embodiment of the present invention (5.6 is a plan view, and Fig. 7 is a plan sectional view), Fig. 8 is a front vertical sectional view of the conventional example, Fig. 2 is a side view of the same, and Fig. Figure 3 is a sectional view of the same plane. 1... Valve box, 5... First valve box valve seat surface 6
...Second valve box valve seat surface, 7...Valve body 8.
... Valve body valve seat surface, 11 ... Drive valve shaft 1
2...Supporting valve stem, 13A, 13B...
・Sleeve 14A, 143...Tsuba, 15A・
...Top surface of valve box, 153...Bottom surface of valve box, 2
1A, 213... Bracket 22A, 22B.
...Fixing bolts 23A, 23s...Engagement hole O...Central axis of sleeve outer periphery, center point Os,
+ OS 2... Central axis of the valve shaft Ob+, Ob2
... Central axis Ov of the valve seat surface of the valve body ... Central axis Fx of the valve seat surface of the valve body ... Flow path axis
Claims (3)
座面の中心軸が円弧状弁箱弁座面の中心軸と一致したと
き全閉鎖となる偏心弁において、弁の流線軸をFxとし
、Fxと中心点Oにおいて直交する軸をFyとするとき
、中心点Oを対称点として流路の前後に対してFx上を
中心点OからEsだけ偏心した中心軸Obを中心とする
円弧状の弁箱弁座面をそれぞれ対設し、弁箱へ外周中心
軸が中心点Oを通るスリーブを解放も可能に嵌着し、ス
リーブの内周面はFxと90゜乃至0゜間の角度βを以
って斜めに交叉する線上にEs偏心する点を中心とする
弁軸を拘束も可能に内嵌し、該弁軸の中心軸Osを中心
とする半径Evの円弧を画いて移動する弁体弁座面の中
心軸軌跡上に弁箱弁座面の中心軸Obが遭遇し、弁軸中
心軸Osは中心点Oに対しFx方向にEb、Fy方向に
Ls偏心し、 Ev=LsかつLs=Essinβ が成立することを特徴とする偏心弁。(1) In an eccentric valve that is fully closed when the central axis of the valve seat surface of the circular valve body eccentrically fixed to the rotatable valve stem coincides with the central axis of the valve seat surface of the circular valve body, the valve flow When the linear axis is Fx, and the axis perpendicular to Fx at the center point O is Fy, the center axis Ob is eccentric from the center point O by Es on Fx with respect to the front and rear of the flow path, with the center point O as the point of symmetry. The valve seat surfaces of the valve box having an arc shape as the center are arranged opposite each other, and a sleeve whose outer circumferential central axis passes through the center point O is releasably fitted to the valve box, and the inner circumferential surface of the sleeve is at an angle of 90° to Fx. A circular arc with a radius Ev centered on the central axis Os of the valve shaft is fitted inside the valve shaft centered on a point Es eccentric on a line that intersects diagonally with an angle β between 0° and can be restrained. The central axis Ob of the valve body valve seat surface encounters the central axis locus of the valve body valve seat surface, which moves with a stroke of An eccentric valve characterized in that Ev=Ls and Ls=Essinβ hold true.
ブ外周面へ弁箱の上下面と一致する鍔を設け、両者へ跨
設したブラケットを弁箱と脱着自在に螺合したことを特
徴とする偏心弁。(2) In claim (1), the release of the sleeve is characterized in that a collar is provided on the outer peripheral surface of the sleeve that matches the upper and lower surfaces of the valve box, and a bracket that spans both is removably screwed into the valve box. Eccentric valve.
へ弁軸と直角に固定ボルトを進退自在に装着し、一方弁
軸の相応する位置に係合穴を凹設したことを特徴とする
偏心弁。(3) In claim (2), the valve stem is restrained by attaching a fixing bolt to the bracket at right angles to the valve stem so that it can move forward and backward, and on the other hand, an engagement hole is formed at a corresponding position on the valve stem. Eccentric valve.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2245157A JP2613126B2 (en) | 1990-09-13 | 1990-09-13 | Eccentric valve |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2245157A JP2613126B2 (en) | 1990-09-13 | 1990-09-13 | Eccentric valve |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH04125366A true JPH04125366A (en) | 1992-04-24 |
JP2613126B2 JP2613126B2 (en) | 1997-05-21 |
Family
ID=17129465
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2245157A Expired - Fee Related JP2613126B2 (en) | 1990-09-13 | 1990-09-13 | Eccentric valve |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2613126B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010135253A (en) * | 2008-12-08 | 2010-06-17 | Honda Motor Co Ltd | Fuel cell system |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5522278U (en) * | 1978-08-02 | 1980-02-13 |
-
1990
- 1990-09-13 JP JP2245157A patent/JP2613126B2/en not_active Expired - Fee Related
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5522278U (en) * | 1978-08-02 | 1980-02-13 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010135253A (en) * | 2008-12-08 | 2010-06-17 | Honda Motor Co Ltd | Fuel cell system |
Also Published As
Publication number | Publication date |
---|---|
JP2613126B2 (en) | 1997-05-21 |
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