JPS62204073A - Butterfly valve equipped with subsidiary valve - Google Patents
Butterfly valve equipped with subsidiary valveInfo
- Publication number
- JPS62204073A JPS62204073A JP61045158A JP4515886A JPS62204073A JP S62204073 A JPS62204073 A JP S62204073A JP 61045158 A JP61045158 A JP 61045158A JP 4515886 A JP4515886 A JP 4515886A JP S62204073 A JPS62204073 A JP S62204073A
- Authority
- JP
- Japan
- Prior art keywords
- valve
- valve body
- small
- child
- shaft
- 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
- 238000012856 packing Methods 0.000 description 4
- 239000012530 fluid Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Landscapes
- Lift Valve (AREA)
Abstract
Description
【発明の詳細な説明】
（１）産業上の利用分野
この発明は子弁付バタフライ弁、さらに詳しくは親弁体
の外周部に小弁口を切欠形成し、この小弁口を開閉する
小弁体を小弁口内で進退自在に設けることにより、圧力
損失を可及的に小さくできるようにした子弁付バタフラ
イ弁に関するものである。Detailed Description of the Invention (1) Industrial Application Field This invention relates to a butterfly valve with a child valve, more specifically, a butterfly valve with a small valve opening formed in the outer periphery of a main valve body, and a small valve that opens and closes the small valve opening. This invention relates to a butterfly valve with a child valve in which pressure loss can be minimized by providing a valve body that can move forward and backward within a small valve port.
（２）従来の技術
この種の子弁付バタフライ弁の一例として特公昭４８−
１１５３３号公報に開示されたものがある。この弁は第
６図に示すように、弁箱１０１に設けた軸受部１０２．
１０２’で親弁軸１０３が回動自在に軸支され、この親
弁軸１０３の弁箱１０１内部分には親弁軸１０３を回動
することによって流路１０４を開閉する親弁体１０５が
固定されている。親弁体１０５の中心部には小弁口１０
７が穿設され、小弁ロ１０７内には小弁口を開閉する子
弁体１０８が、親弁軸１０３内に嵌挿された子弁軸１１
０に固定されて配置されている。(2) Prior art As an example of this type of butterfly valve with child valve,
There is one disclosed in Publication No. 11533. As shown in FIG. 6, this valve has a bearing portion 102.
A master valve shaft 103 is rotatably supported at 102', and a master valve body 105 that opens and closes the flow path 104 by rotating the master valve shaft 103 is provided in the inside of the valve box 101 of the master valve shaft 103. Fixed. A small valve port 10 is located in the center of the main valve body 105.
A child valve body 108 for opening and closing the small valve opening is provided in the small valve hole 107, and a child valve stem 11 inserted into the main valve stem 103.
It is fixed at 0.
（３）発明が解決しようとする問題点
ところで、前記のような子弁付バタフライ弁にあっては
、子弁体１０８が親弁体１０５の中心部に設けた小弁ロ
１０７内に配置され、かつ子弁軸１１０が親弁軸１０３
と同軸的に、親弁軸１０３内に嵌挿された構造のため、
親弁軸１０３の軸径と、この親弁軸に固定される親弁体
１０５の厚さが必然的に大きくなってしまう。したがっ
て、親弁体１０５が流路１０４を開放した全閉状態にお
ける流路１０４の開口面積が小さくなり、流路１０４を
通過する流体の圧力損失が大きくなってしまうという問
題点があった。(3) Problems to be Solved by the Invention By the way, in the butterfly valve with a child valve as described above, the child valve body 108 is disposed within the small valve hole 107 provided at the center of the main valve body 105. , and the child valve shaft 110 is the parent valve shaft 103
Because of the structure that is inserted coaxially into the main valve shaft 103,
The shaft diameter of the master valve shaft 103 and the thickness of the master valve body 105 fixed to the master valve shaft inevitably become large. Therefore, there is a problem in that the opening area of the flow path 104 in the fully closed state where the parent valve body 105 opens the flow path 104 becomes small, and the pressure loss of the fluid passing through the flow path 104 becomes large.
そこで、この発明は前記のような圧力損失を可及的に小
さくすることができるようにすることを技術的課題とす
る。Therefore, the technical object of the present invention is to reduce the pressure loss as described above as much as possible.
（４）問題点を解決するための手段
前記のような問題点を解決するためにこの発明に係る子
弁付バタフライ弁は次のような技術的手段を採ったこと
を特徴とする。すなわち、弁箱に設けた軸受部で親弁軸
を回動自在に軸支し、この親弁軸の弁箱内部分に親弁軸
を回動することによって流路を開閉する親弁体を固定し
、この親弁体の親弁軸と交叉する外周部に小弁口を切欠
形成し、全閉状態で前記小弁口と対向する弁箱に小弁口
側が開口した子弁体室を有する軸受部を設け、この軸受
部で子弁軸を回動自在に軸支し、この子弁軸の小弁体室
内部分に小弁軸によって子弁体室と小弁口との間を進退
可能となって小弁口を開閉する子弁体を連結したことで
ある。(4) Means for Solving the Problems In order to solve the above-mentioned problems, the butterfly valve with slave valve according to the present invention is characterized by adopting the following technical means. In other words, a master valve shaft is rotatably supported by a bearing provided in the valve box, and a master valve body that opens and closes the flow path by rotating the master valve shaft is attached to the inside of the valve box. A small valve opening is formed in the outer periphery of the main valve that intersects with the main valve shaft, and a child valve body chamber with the small valve opening side opened in the valve box facing the small valve opening in a fully closed state is formed. A bearing part is provided, and the bearing part rotatably supports the child valve shaft, and the small valve shaft moves back and forth between the child valve body chamber and the small valve opening in the small valve body chamber part of the child valve stem. This is possible by connecting a child valve body that opens and closes the small valve port.
（５）作 用
この弁は次のように作動される。親弁体が流路を閉鎖し
、かつ子弁体が小弁口を閉鎖した全閉状態で開弁するに
は、まず子弁軸によって小弁口に位置する子弁体を子弁
体室に後退させ、小弁口を開放する。しかる後、親弁軸
を回動して親弁体をほぼ９０°回動し、流路を開放する
。これによって全閉状態となる。(5) Operation This valve is operated as follows. In order to open the valve in the fully closed state where the master valve body closes the flow path and the child valve body closes the small valve port, first move the child valve body located at the small valve port into the child valve body chamber using the child valve shaft. Move it backwards and open the small valve. Thereafter, the master valve shaft is rotated to rotate the master valve body approximately 90 degrees to open the flow path. This results in a fully closed state.
一方、全閉状態から閉弁にするには、まず親弁軸を逆に
回動して親弁体をほぼ９０°逆回動し、流路を閉鎖する
。しかる後、子弁軸によって子弁体室に位置する子弁体
を小弁口に前進させ、小弁口を閉鎖する。これによって
全閉状態となる。このように親弁体が流路を開閉する際
に、子弁体が小弁口を開放しているため、親弁体の上下
流はほぼ均一状態となり。On the other hand, in order to close the valve from the fully closed state, first rotate the master valve shaft in the opposite direction, rotate the master valve body approximately 90 degrees in the reverse direction, and close the flow path. Thereafter, the child valve body located in the child valve body chamber is advanced to the small valve port by the child valve shaft, and the small valve port is closed. This results in a fully closed state. In this way, when the master valve element opens and closes the flow path, the child valve element opens the small valve port, so the upstream and downstream sides of the master valve element are in a substantially uniform state.
親弁軸にかかる負荷トルクは非常に小さくなる。The load torque applied to the master valve shaft becomes very small.
また、前記構成から明らかなように、子弁軸は親弁軸と
同軸的に設けられていす、別々に設けられるため、親弁
軸の軸径や親弁体の厚さを従来のように大きくする必要
がなく、したがって、全閉状態における流路の開口面積
を大きくとれて、圧力損失を可及的に小さくすることが
可能となる。In addition, as is clear from the above structure, the child valve shaft is provided coaxially with the main valve shaft, but is provided separately, so the shaft diameter of the main valve shaft and the thickness of the main valve body can be adjusted as before. There is no need to increase the size, and therefore, the opening area of the flow path in the fully closed state can be increased, making it possible to reduce pressure loss as much as possible.
（６）特有の効果
前記のように親弁軸と子弁軸は同軸的に設けられていな
いため、駆動に際し、該操作を生ずる虞れは全くない。(6) Unique Effects As mentioned above, since the master valve shaft and the child valve shaft are not provided coaxially, there is no risk of such operation occurring during driving.
また、小弁口の開放時、子弁体は小弁口から子弁体室に
後退して位置し、小弁口には位置しない。そのため従来
のように小弁口の開放時においても子弁体が小弁口に位
置するものに比べ、小弁口の開口面積を大きくとること
ができるとともに、この開口面積の範囲で小弁口を通過
する流体の流量調整を微細に行なうことができるという
利点がある。Further, when the small valve port is opened, the child valve body is moved back from the small valve port to the child valve body chamber and is not located at the small valve port. Therefore, compared to the conventional case in which the child valve body is located at the small valve port even when the small valve port is opened, the opening area of the small valve port can be made larger, and within this opening area, the small valve port can be opened. This has the advantage that the flow rate of the fluid passing through can be finely adjusted.
（７）実施例
第１〜３図は第１実施例を示す。図面において１は子弁
付バタフライ弁で、円筒状流路２を有する弁箱３を具え
ている６弁箱３の上下部に一体に設けられた軸受部５，
５′には、親弁体用の親弁軸６が回動自在に軸支され、
この親弁軸６の弁箱内部分には流路２を開閉する親弁体
７がピン８により固定されている。(7) Example Figures 1 to 3 show a first example. In the drawings, reference numeral 1 denotes a butterfly valve with a child valve, which includes a valve box 3 having a cylindrical flow path 2. Bearings 5, which are integrally provided at the upper and lower parts of the valve box 3;
5', a master valve shaft 6 for a master valve body is rotatably supported;
A master valve element 7 for opening and closing the flow path 2 is fixed to the inner part of the valve body of the master valve shaft 6 by a pin 8.
軸受部５から突出した親弁軸６の上端部は、ボンネット
１０を介して弁箱３の軸受部５に固定されたウオーム減
速機１１の図示しない出力軸に連結されている。この出
力軸は図示しないウオームホイール、ウオームを介して
ウオーム軸上のハンドル１２に連結されている。したが
って、ハンドル１２を回動すると、前記出力軸、及び親
弁軸６が回動し、親弁体７は流路２を開閉するようにな
る。軸受部５，５′において１３．１４はブツシュ、
１５．１６はパツキン、１７はパツキン１５の押え、１
８はカバーである。An upper end portion of the master valve shaft 6 protruding from the bearing portion 5 is connected via a bonnet 10 to an output shaft (not shown) of a worm reducer 11 fixed to the bearing portion 5 of the valve box 3. This output shaft is connected to a handle 12 on the worm shaft via a worm wheel and worm (not shown). Therefore, when the handle 12 is rotated, the output shaft and the master valve shaft 6 are rotated, and the master valve body 7 opens and closes the flow path 2. In the bearing parts 5, 5', 13.14 is a bushing,
15.16 is the packing, 17 is the presser foot of packing 15, 1
8 is a cover.
親弁体７の親弁軸６と直交する一側外周部には、小弁口
２０が切欠形成されている。全閉状態で小弁口２０と対
向する弁箱３には、小弁口２０側、及びこれと反対側が
開口した子弁体室２１を有する軸受部２２が設けられて
いる。子弁体室２１には、小弁口２０の閉鎖時、小弁口
２０に水密的に嵌合する小弁体２５が小弁口２０を開閉
できるようにし小弁口２０と子弁体室２１との間を進退
可能に配置されている。２６は子弁軸で、子弁体室２１
の小弁口２０と反対側開口部を覆うように軸受部２２に
固定されたカバー２８と、パツキン箱２９とにその長さ
方向中間部に設けた鍔部２７が挟持されて、回動自在に
軸支されている。鍔部２７より子弁体２５側の子弁軸２
６にはおねじ３０が設けられ、このおねじ３０には子弁
体２５に設けたねじ駒３１のめねじ３２が螺合されてい
る。３３は子弁軸収納用凹孔で、この凹孔３３の底面と
子弁体２５の先端面とは空気抜き孔３４で連通されてい
る。パツキン箱２９から突出した子弁軸２６の端部には
操作ハンドル３５が固定されている。したがって、ハン
ドル３５を回動すると、子弁体２５は子弁軸２６のおね
じ３０と、ねじ駒３１のめねじ３２の螺合により、実線
で示すように小弁口２０に嵌合して位置し、小弁口２０
を閉鎖した全閉位置と、鎖線で示すように小弁体室２１
に位置し、小弁口２０を開放した全閉位置との間を進退
するようになる。３７゜３８はパツキン、３９はパツキ
ン３７の押えである。A small valve port 20 is cut out in the outer periphery of the main valve body 7 on one side perpendicular to the main valve shaft 6 . The valve body 3 facing the small valve port 20 in the fully closed state is provided with a bearing portion 22 having a child valve body chamber 21 that is open on the small valve port 20 side and on the opposite side. A small valve body 25 that fits in the small valve port 20 in a watertight manner opens and closes the small valve port 20 when the small valve port 20 is closed. 21 so that it can move forward and backward. 26 is the child valve stem, and the child valve body chamber 21
A cover 28 is fixed to the bearing part 22 so as to cover the opening on the opposite side to the small valve port 20, and a flange part 27 provided at the middle part in the longitudinal direction is sandwiched between the cover 28 and the packing box 29, so that it can rotate freely. It is pivoted on. Child valve shaft 2 on the side of child valve body 25 from flange 27
6 is provided with a male thread 30, and a female thread 32 of a screw piece 31 provided on the child valve body 25 is screwed into this male thread 30. Reference numeral 33 denotes a recessed hole for storing the child valve stem, and the bottom surface of this recessed hole 33 and the front end surface of the child valve body 25 communicate with each other through an air vent hole 34 . An operating handle 35 is fixed to the end of the child valve shaft 26 protruding from the packing box 29. Therefore, when the handle 35 is rotated, the child valve body 25 is fitted into the small valve port 20 as shown by the solid line by the male thread 30 of the child valve shaft 26 and the female thread 32 of the screw piece 31. located, small valve opening 20
and the small valve chamber 21 as shown by the chain line.
It moves back and forth between the fully closed position and the fully closed position where the small valve port 20 is opened. 37° 38 is a gasket, and 39 is a presser foot for the gasket 37.
また、４０は弁箱３の流路２の内周面を、子弁体室２１
の内周面まで延設して被覆したゴムライニング、４１は
小弁口２０を含む親弁体７の外周面を被覆したゴムライ
ニングで、これらのゴムライニング４０．４１は弁座を
兼ねるようになっている。40 also connects the inner peripheral surface of the flow path 2 of the valve box 3 to the child valve body chamber 21.
41 is a rubber lining that covers the outer circumferential surface of the main valve body 7 including the small valve port 20, and these rubber linings 40 and 41 are designed to also serve as a valve seat. It has become.
第４，５図は第２実施例を示す。この第２実施例は第１
実施例に、さらに子弁体を回動して小弁口２０を開閉す
る機構を付加したものである。4 and 5 show a second embodiment. This second embodiment is similar to the first
A mechanism for opening and closing the small valve port 20 by rotating the child valve body is added to the embodiment.
子弁体室５１は円形断面に形成されている。The child valve body chamber 51 is formed to have a circular cross section.
また、子弁体５５は全閉状態で子弁体室５１に位置する
部分が子弁体室５１の内周面に摺接する円形部５６に形
成され、小弁口２０に位置する部分が平板部５７に形成
されている。５８は子弁軸で、この子弁軸５８は一端が
子弁体５５にピン５９で固定されているとともに、他端
側か小弁体室５１の小弁口２０と反対側開口部を覆うよ
うに軸受部５２に固定されたカバー６０を貫通し、さら
にカバー６０に連接固定された駆動装置６２のギヤケー
ス６３内に延設されている。子弁軸５８のカバー６０、
及びギヤケース６３内部分にはおねじ６５とキー溝６６
が設けられている。子弁軸５８のおねじ６５には、ギヤ
ケース６３内に軸支された進退用スリーブ６７に設けた
めねじ６８が螺合されている。スリーブ６７゛にはキー
７０によりウオームホイール７１が嵌合固定され、ウオ
ームホイール７１には一端部がギヤケース６３を貫通し
て突出するウオーム７２が噛合されている。Further, the part of the child valve body 55 located in the child valve body chamber 51 in the fully closed state is formed into a circular part 56 that slides into contact with the inner peripheral surface of the child valve body chamber 51, and the part located at the small valve port 20 is formed into a flat plate. It is formed in the section 57. 58 is a child valve shaft, one end of which is fixed to the child valve body 55 with a pin 59, and the other end covers the opening of the small valve body chamber 51 on the side opposite to the small valve port 20. It passes through the cover 60 fixed to the bearing part 52 and further extends into the gear case 63 of the drive device 62 which is connected and fixed to the cover 60. A cover 60 of the child valve shaft 58,
And a male screw 65 and a keyway 66 are provided inside the gear case 63.
is provided. A female thread 68 provided on a reciprocating sleeve 67 pivotally supported within the gear case 63 is screwed into the male thread 65 of the child valve shaft 58 . A worm wheel 71 is fitted and fixed to the sleeve 67' by a key 70, and a worm 72 whose one end protrudes through the gear case 63 is meshed with the worm wheel 71.
ギヤケース６３から突出したウオーム７２の一端部には
図示しないハンドルなど操作部が設けられている。An operating section such as a handle (not shown) is provided at one end of the worm 72 protruding from the gear case 63.
また、子弁軸５８のキー溝６６には、スリーブ６７と軸
方向に隣接してギヤケース６３内に軸支された回動用ス
リーブ７３に設けたキー７４が係合されている。スリー
ブ７３の外周にはスプライン７５が設けられ、このスプ
ライン７５にはクラッチ７７のスプライン７８が摺動自
在に嵌合されている。クラッチ７７の外周には環状凹溝
８０が形成されているとともに、環状凹溝８０を挟んで
一端側にはウオームホイール７１に設けたつめ８１と係
合可能なつめ８２が設けられ、他端側にはギヤケースカ
バー６４に設けたセレーション８３と摺動自在に嵌合す
るセレーション８４が設けられている。環状凹溝８０に
はギヤケース６３に設けたピン８５で枢支された揺動レ
バー８６の一端部が係合され、揺動レバー８６の他端部
はギヤケース６３を貫通して外部に突出され、外部から
揺動レバー８６を操作できるようになっている。したが
って、この第２実施例では図示のようにクラッチ７７の
つめ８２とウオームホイール７１のつめ８１との係合が
外れた状態で、操作部を介してウオーム７２を回動する
と、ウオームホイール７１、及びスリーブ６７のめねじ
６８と螺合したおねじ６５を介して子弁軸５８が進退し
、この子弁軸５８の進退によって子弁体５５は第１実施
例と同様に子弁口２０を開閉するようになる。また、揺
動レバー８６を矢印方向に揺動し、クラッチ７７のセレ
ーション８４とギヤケースカバー６４のセレーション８
３との嵌合を外すとともに、クラッチ７７のっめ８２と
ウオームホイール７１のつめ８１とを係合させる。しか
る後、操作部を介してウオーム７２を回動すると、ウオ
ームホイール７１、クラッチ７７、及びスリーブ７３が
回動し、この回動とともにスリーブ７３のキー７７とキ
ー溝６６で係合した子弁軸５８が回動し、この子弁軸５
８の回動によって子弁体５５は小弁口２２の位置で回動
して小弁口２２を開閉するようになる。、９０はパツキ
ン、９１はパツキン９０の押え、９２．９３．９４は軸
受、９５は窓口である。Further, a key 74 provided on a rotating sleeve 73 that is axially adjacent to the sleeve 67 and pivotally supported within the gear case 63 is engaged with the keyway 66 of the child valve shaft 58 . A spline 75 is provided on the outer periphery of the sleeve 73, and a spline 78 of a clutch 77 is slidably fitted into the spline 75. An annular groove 80 is formed on the outer periphery of the clutch 77, and a pawl 82 that can be engaged with a pawl 81 provided on the worm wheel 71 is provided on one end side of the annular groove 80, and a pawl 82 that can engage with a pawl 81 provided on the worm wheel 71 is provided on the other end side. Serrations 84 are provided which are slidably fitted into serrations 83 provided on the gear case cover 64. One end of a swinging lever 86 pivotally supported by a pin 85 provided on the gear case 63 is engaged with the annular groove 80, and the other end of the swinging lever 86 penetrates the gear case 63 and projects to the outside. The swing lever 86 can be operated from the outside. Therefore, in this second embodiment, when the worm 72 is rotated via the operating section with the pawl 82 of the clutch 77 and the pawl 81 of the worm wheel 71 disengaged, the worm wheel 71, The child valve shaft 58 moves forward and backward through the male thread 65 screwed into the female thread 68 of the sleeve 67, and as the child valve shaft 58 advances and retreats, the child valve body 55 opens the child valve opening 20 as in the first embodiment. It will open and close. In addition, the swing lever 86 is swinged in the direction of the arrow, and the serrations 84 of the clutch 77 and the serrations 8 of the gear case cover 64 are rotated.
At the same time, the catch 82 of the clutch 77 and the pawl 81 of the worm wheel 71 are engaged. Thereafter, when the worm 72 is rotated through the operating section, the worm wheel 71, the clutch 77, and the sleeve 73 are rotated, and with this rotation, the child valve shaft engaged with the key 77 of the sleeve 73 and the keyway 66 is rotated. 58 rotates, and this child valve shaft 5
8 rotates the child valve body 55 at the position of the small valve port 22 to open and close the small valve port 22. , 90 is a gasket, 91 is a presser for the gasket 90, 92, 93, and 94 are bearings, and 95 is a window.
尚、前記で示したものは好ましい、より具体的な実施例
であるが、この発明はこれらの実施例に限定されるもの
でないことは言う迄もなく、要旨を変更しない範囲で適
宜の設計変更が可能である。Although the embodiments shown above are preferred and more specific embodiments, it goes without saying that this invention is not limited to these embodiments, and appropriate design changes may be made without changing the gist. is possible.
第１図はこの発明の実施例を示す縦断正面図、第２図は
第１図の■−■線に沿う横断平面図。
第３図は第１図のｍ−ｍ線に沿う一部縦断側面図、第４
図はこの発明の第２実施例を示す縦断正面図、第５図は
同上の要部拡大横断平面図、第６図は従来例を示す縦断
側面図である。
１・・・子弁付バタフライ弁 ２・・・流 路３・・
・弁箱 ５，５’、２２・・・軸受部６・・・親弁
軸 ７・・・親弁体２０・・・小弁口
２１．５１・・・子弁体室２５．５５・・・子弁体
２８，６０・・・カバー竺６閃FIG. 1 is a longitudinal sectional front view showing an embodiment of the present invention, and FIG. 2 is a transverse plan view taken along the line ■-■ in FIG. 1. Figure 3 is a partially longitudinal side view taken along line m-m in Figure 1;
The figure is a longitudinal sectional front view showing a second embodiment of the present invention, FIG. 5 is an enlarged cross-sectional plan view of the same main part, and FIG. 6 is a longitudinal sectional side view showing a conventional example. 1...Butterfly valve with child valve 2...Flow path 3...
・Valve box 5, 5', 22...Bearing part 6...Main valve shaft 7...Main valve body 20...Small valve port
21.51... Child valve body chamber 25.55... Child valve body
28,60...cover 6 flashes
Claims (1)
この親弁軸の弁箱内部分に親弁軸を回動することによっ
て流路を開閉する親弁体を固定し、この親弁体の親弁軸
と交叉する外周部に小弁口を切欠形成し、全閉状態で前
記小弁口と対向する弁箱に小弁口側が開口した子弁体室
を有する軸受部を設け、この軸受部で子弁軸を回動自在
に軸支し、この子弁軸の小弁体室内部分に小弁軸によっ
て子弁体室と小弁口との間を進退可能となって小弁口を
開閉する子弁体を連結したことを特徴とする子弁付バタ
フライ弁。1. The main valve shaft is rotatably supported by a bearing provided in the valve box,
A master valve body, which opens and closes the flow path by rotating the master valve shaft, is fixed to the inside of the valve box of the master valve shaft, and a small valve opening is cut out on the outer periphery of the master valve body, which intersects with the master valve shaft. a bearing portion having a child valve body chamber with the small valve port side open is provided in the valve box facing the small valve port in a fully closed state, and the child valve shaft is rotatably supported by the bearing portion; A child valve body is connected to the small valve body chamber portion of the child valve stem, and a child valve body that can move forward and backward between the child valve body chamber and the small valve port to open and close the small valve port is connected to the small valve body part of the child valve stem. Butterfly valve with valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4515886A JPH0236832B2 (en) | 1986-03-04 | 1986-03-04 | SHIBENTSUKIBATAFURAIBEN |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4515886A JPH0236832B2 (en) | 1986-03-04 | 1986-03-04 | SHIBENTSUKIBATAFURAIBEN |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62204073A true JPS62204073A (en) | 1987-09-08 |
| JPH0236832B2 JPH0236832B2 (en) | 1990-08-21 |
Family
ID=12711457
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4515886A Expired - Lifetime JPH0236832B2 (en) | 1986-03-04 | 1986-03-04 | SHIBENTSUKIBATAFURAIBEN |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0236832B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108374899A (en) * | 2018-03-12 | 2018-08-07 | 石英楠 | A kind of resistance to strong erosion butterfly valve of high flexibility and its application method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5954418U (en) * | 1982-10-02 | 1984-04-10 | 鹿島建設株式会社 | Belt conveyor emergency stop device |
-
1986
- 1986-03-04 JP JP4515886A patent/JPH0236832B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5954418U (en) * | 1982-10-02 | 1984-04-10 | 鹿島建設株式会社 | Belt conveyor emergency stop device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108374899A (en) * | 2018-03-12 | 2018-08-07 | 石英楠 | A kind of resistance to strong erosion butterfly valve of high flexibility and its application method |
| CN108374899B (en) * | 2018-03-12 | 2020-02-14 | 天工阀门集团有限公司 | High-flexibility strong-erosion-resistant butterfly valve |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0236832B2 (en) | 1990-08-21 |
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