JPH08312806A - Ball valve - Google Patents
Ball valveInfo
- Publication number
- JPH08312806A JPH08312806A JP14134595A JP14134595A JPH08312806A JP H08312806 A JPH08312806 A JP H08312806A JP 14134595 A JP14134595 A JP 14134595A JP 14134595 A JP14134595 A JP 14134595A JP H08312806 A JPH08312806 A JP H08312806A
- Authority
- JP
- Japan
- Prior art keywords
- ball
- valve
- opening
- fan
- flow
- 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
- 238000007789 sealing Methods 0.000 claims description 15
- 239000012530 fluid Substances 0.000 abstract description 32
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 229910021642 ultra pure water Inorganic materials 0.000 description 3
- 239000012498 ultrapure water Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 241000894006 Bacteria Species 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
Landscapes
- Taps Or Cocks (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明はボール弁に関する。FIELD OF THE INVENTION This invention relates to ball valves.
【０００２】[0002]
【従来の技術】従来、ボール弁として、実公平3-29656
号公報に記載の如く、弁箱の入口流路と出口流路の間
に、流過孔を有するボールと、このボールの両開口側に
それぞれ接触するシール部材とを装着し、操作部とボー
ルとを弁棒を介して連結してなり、ボールの流過孔の流
入側の開口を円形とし、流出側の開口を扇形としてなる
ものがある。2. Description of the Related Art Conventionally, as a ball valve, 3-29656
As described in the publication, a ball having a flow hole and a seal member contacting both opening sides of the ball are mounted between an inlet flow path and an outlet flow path of a valve box, and an operating portion and a ball are installed. There is one in which the opening of the flow-through hole of the ball is circular and the opening of the flow-out side is fan-shaped.
【０００３】このボール弁によれば、ボールを90度回動
することで弁を全開ないし全閉操作でき、仕切弁のよう
にハンドルを数回ないし数十回転も回す必要がなく、操
作が迅速且つ簡易である。また、扇形開口の尖端部で交
わる２辺を開口中心線方向に膨出した凸状カーブとする
ことにより、流量特性をイコールパーセント特性（弁開
度と同じ増加分に対して流量の増加割合が等しいもの）
とし、上記２辺を開口中心線に対して扇状カーブとする
ことにより流量特性をリニア特性（弁開度に正比例して
流量を変化させるもの）とすることができる（特開昭55
-107165 号公報）。According to this ball valve, the valve can be fully opened or fully closed by rotating the ball 90 degrees, and it is not necessary to rotate the handle several times or several tens of times like a gate valve, and the operation is quick. And it's simple. In addition, the flow rate characteristics are equal percent characteristics (the rate of increase in flow rate with respect to the same increase as the valve opening is determined by forming a convex curve that bulges in the direction of the opening center line on two sides that intersect at the tip of the fan-shaped opening. Equal)
By making the above two sides into a fan-shaped curve with respect to the center line of the opening, the flow rate characteristic can be made linear (the flow rate is changed in direct proportion to the valve opening) (JP-A-55).
-107165).
【０００４】[0004]
【発明が解決しようとする課題】然しながら、従来技術
では、弁全閉時には扇形開口の尖端部が出口流路から未
だ大きく離れた流出側シール部材によるシール領域に設
定され、弁全開時には扇形開口の尖端部が未だ出口流路
内にあるように設定されている。このため、下記〜
の問題点がある。However, in the prior art, when the valve is fully closed, the tip of the fan-shaped opening is set in the sealing region by the outflow-side sealing member that is still far away from the outlet flow path, and when the valve is fully opened, the fan-shaped opening is closed. The point is set so that it is still in the outlet channel. For this reason,
There is a problem.
【０００５】操作部による弁の開操作時、扇形開口の
尖端部がシール部材を通過して出口流路に到達するまで
の遊動範囲が長く、流体の流れ始めが遅い。During the opening operation of the valve by the operating portion, there is a long floating range until the tip of the fan-shaped opening passes through the seal member and reaches the outlet passage, and the flow of fluid starts slowly.
【０００６】弁全開時に、扇形開口の尖端部が未だ出
口流路内にあるから、扇形開口が出口流路につながるボ
ールの有効回動角度範囲が比較的小さく、操作部による
流体制御帯域が狭い。When the valve is fully opened, the tip of the fan-shaped opening is still in the outlet passage, so that the effective turning angle range of the ball connecting the fan-shaped opening to the outlet passage is relatively small, and the fluid control zone by the operating portion is narrow. .
【０００７】操作部として電気式アクチュエータを用
い、操作部の入力信号に対する流体制御帯域を広くする
ことはできるが、その分操作部の分解能が低くなり、流
体制御制度が悪くなる。Although an electric actuator can be used as the operating unit to widen the fluid control band for the input signal of the operating unit, the resolution of the operating unit is reduced by that much and the fluid control accuracy is deteriorated.
【０００８】本発明は、ボール弁において、操作部によ
る開操作後の流体の流れ始めを早く、操作部による流体
制御帯域を広く、且つ流体制御精度を向上することを目
的とする。It is an object of the present invention to quickly start the flow of fluid after the opening operation by the operating portion, widen the fluid control zone by the operating portion, and improve the fluid control accuracy in the ball valve.
【０００９】[0009]
【課題を解決するための手段】請求項１に記載の本発明
は、弁箱の入口流路と出口流路の間に、流過孔を有する
ボールと、このボールの両開口側にそれぞれ接触するシ
ール部材とを装着し、操作部とボールとを弁棒を介して
連結してなり、ボールの流過孔の流入側の開口を円形と
し、流出側の開口を扇形としてなるボール弁において、
弁全閉時には扇形開口の尖端部が出口流路直近の流出側
シール部材による第１のシール領域に設定されるととも
に、弁全開時には扇形開口の尖端部が出口流路を横切っ
て流出側シール部材による第２のシール領域に侵入する
ように設定されてなるものである。According to the present invention as set forth in claim 1, a ball having a through hole is provided between an inlet flow path and an outlet flow path of a valve box, and the ball is in contact with both opening sides of the ball. A ball valve in which an opening on the inflow side of the flow-through hole of the ball is circular and the opening on the outflow side is fan-shaped.
When the valve is fully closed, the tip of the fan-shaped opening is set in the first sealing region by the outflow-side sealing member in the immediate vicinity of the outlet passage, and when the valve is fully opened, the tip of the fan-shaped opening crosses the outlet passage and the outflow-side sealing member. Is set so as to enter the second seal area.
【００１０】請求項２に記載の本発明は、請求項１に記
載の本発明において更に、前記ボールの流過孔が、円形
開口と扇形開口とを滑らかにつなぐ弁内流路を形成して
なるものである。According to a second aspect of the present invention, in addition to the first aspect of the present invention, the flow hole of the ball forms an in-valve flow passage that smoothly connects the circular opening and the fan-shaped opening. It will be.
【００１１】請求項３に記載の本発明は、請求項１又は
２に記載の本発明において更に、前記ボールの円形開口
側の流過孔を該ボール回りの弁室に連通する連通路と、
扇形開口側の流過孔を該ボール回りの弁室に連通する連
通路とを備えてなるものである。According to a third aspect of the present invention, in addition to the first or second aspect of the present invention, there is further provided a communication passage for communicating the flow passage hole on the circular opening side of the ball with the valve chamber around the ball.
The flow passage hole on the fan-shaped opening side is provided with a communication passage communicating with the valve chamber around the ball.
【００１２】[0012]
【作用】請求項１に記載の本発明によれば下記〜の
作用がある。 弁全閉時に、扇形開口の尖端部が出口流路直近の流出
側シール部材による第１のシール領域に設定されてい
る。従って、操作部による弁の開操作後、扇形開口の尖
端部がシール部材を通過して出口流路に到達するまでの
遊動範囲が短く、流体の流れ始めが早い。According to the present invention as set forth in claim 1, the following effects are obtained. When the valve is fully closed, the tip of the fan-shaped opening is set in the first sealing region by the outflow-side sealing member in the immediate vicinity of the outlet flow path. Therefore, after the opening operation of the valve by the operation portion, the free-moving range until the tip of the fan-shaped opening passes through the seal member and reaches the outlet flow path is short, and the fluid starts to flow quickly.
【００１３】弁全開時に、扇形開口の尖端部が出口流
路を横切って流出側シール部材による第２のシール領域
に侵入するように設定されている。従って、扇形開口が
出口流路につながるボールの有効回動角度範囲が比較的
大きく、操作部による流体制御帯域が広い。When the valve is fully opened, the tip of the fan-shaped opening is set so as to traverse the outlet passage and enter the second seal area of the outflow side seal member. Therefore, the effective rotation angle range of the ball in which the fan-shaped opening is connected to the outlet channel is relatively large, and the fluid control zone by the operating portion is wide.
【００１４】扇形開口の形状により上記の流体制御
帯域を広げるものであるから、操作部の分解能まで影響
を及ぼすことがなく、流体制御精度を向上できる。Since the above-mentioned fluid control band is widened by the shape of the fan-shaped opening, the fluid control accuracy can be improved without affecting the resolution of the operating portion.
【００１５】請求項２に記載の本発明によれば下記の
作用がある。 ボールの流過孔が、円形開口と扇形開口とをテーパ状
流路面等により滑らかにつなぐ弁内流路を形成したか
ら、弁の流路抵抗を小さくできる。The present invention according to claim 2 has the following effects. The flow passage hole of the ball forms an in-valve flow path that smoothly connects the circular opening and the fan-shaped opening with a tapered flow path surface or the like, so that the flow path resistance of the valve can be reduced.
【００１６】請求項３に記載の本発明によれば下記の
作用がある。 ボールの円形開口側の流過孔を該ボール回りの弁座に
連通する連通路と、扇形開口側の流過孔を該ボール回り
の弁室に連通する連通路とを備えた。従って、ボールの
流過孔は円形開口側から扇形開口側に向けて縮流するも
のとなり、円形開口に比して扇形開口の流速が速くな
る。これにより、円形開口側での静圧が扇形開口側に比
して低くなり、ここで差圧が生ずるので、円形開口側で
は流体が連通路を通って弁室へ噴出し、扇形開口側では
流体が連通路を通って流過孔側へ吸い込まれることにな
る。このようにして流体は、ボール内の流過孔とボール
回りの弁室とを同時に流れ、弁室をデッドスペース（液
溜まり）とすることがない。よって、デッドスペース内
の流体がバクテリアを発生する等の不都合を招くことが
なく、純水、超純水の流量制御等に好適に用いることが
できる。The present invention according to claim 3 has the following effects. A communication passage that connects the flow passage hole on the circular opening side of the ball to the valve seat around the ball and a communication passage that connects the flow passage hole on the fan-shaped opening side to the valve chamber around the ball are provided. Therefore, the flow hole of the ball contracts from the circular opening side toward the fan-shaped opening side, and the flow velocity of the fan-shaped opening becomes faster than that of the circular opening. As a result, the static pressure on the side of the circular opening becomes lower than that on the side of the fan-shaped opening, and a differential pressure is generated here.Therefore, on the side of the circular opening, fluid is ejected through the communication passage into the valve chamber and on the side of the fan-shaped opening. The fluid is sucked into the flow hole side through the communication passage. In this way, the fluid simultaneously flows through the flow hole in the ball and the valve chamber around the ball, and the valve chamber does not become a dead space (liquid pool). Therefore, the fluid in the dead space does not cause inconvenience such as generation of bacteria and can be suitably used for flow rate control of pure water or ultrapure water.
【００１７】[0017]
【実施例】図１は第１実施例に係るボール弁を示す模式
図、図２はボール弁の要部を示す模式図、図３はボール
弁の開度状態を示す模式図、図４は第２実施例に係るボ
ール弁の要部を示す模式図、図５は第３実施例に係るボ
ール弁の要部を示す模式図である。1 is a schematic view showing a ball valve according to a first embodiment, FIG. 2 is a schematic view showing a main part of the ball valve, FIG. 3 is a schematic view showing an opening state of the ball valve, and FIG. FIG. 5 is a schematic view showing a main part of a ball valve according to the second embodiment, and FIG. 5 is a schematic view showing a main part of a ball valve according to the third embodiment.
【００１８】（第１実施例）（図１〜図３） ボール弁１０は図１に示す如く、弁箱１１の入口流路１
１Ａと出口流路１１Ｂの間に、流過孔１３を有するボー
ル１２と、このボール１２の両開口１４、１５側にそれ
ぞれ接触するシール部材１６、１７とを装着している。
そして、電気式アクチュエータからなる操作部１８とボ
ール１２とを弁棒１８Ａを介して連結している。(First Embodiment) (FIGS. 1 to 3) As shown in FIG. 1, the ball valve 10 has an inlet passage 1 of a valve box 11.
A ball 12 having a flow-through hole 13 and seal members 16 and 17 that come into contact with both openings 14 and 15 of the ball 12 are mounted between 1A and the outlet channel 11B.
Then, the operating portion 18 composed of an electric actuator and the ball 12 are connected via the valve rod 18A.
【００１９】このとき、ボール弁１０にあっては、図２
に示す如く、ボール１２の流過孔１３の流入側の開口１
４を円形とし、流出側の開口１５を扇形としている。At this time, in the ball valve 10, FIG.
As shown in FIG. 1, the opening 1 on the inflow side of the flow hole 13 of the ball 12
4 is circular, and the opening 15 on the outflow side is fan-shaped.
【００２０】そして、ボール弁１０は、弁全閉時には、
図３（Ａ）に示す如く、扇形開口１５の尖端部（延長
部）１５Ａが出口流路１１Ｂの直近の流出側シール部材
１７による第１のシール領域１７Ａに設定されるように
している。また、弁全開時には、図２、図３（Ｃ）に示
す如く、扇形開口１５の尖端部１５Ａが出口流路１１Ｂ
を横切って流出側シール部材１７による第２のシール領
域１７Ｂに侵入し、且つ扇形開口１５の大端部１５は出
口流路１１Ｂに侵入することなく該出口流路１１Ｂの周
縁部に合致し、ボール１２の回動周方向における出口流
路１１Ｂの全範囲に扇形開口１５を広く開口せしめるこ
ととしている。When the ball valve 10 is fully closed,
As shown in FIG. 3 (A), the tip portion (extension portion) 15A of the fan-shaped opening 15 is set in the first seal area 17A by the outflow-side seal member 17 in the immediate vicinity of the outlet flow path 11B. Further, when the valve is fully opened, as shown in FIGS. 2 and 3 (C), the tip portion 15A of the fan-shaped opening 15 has the outlet passage 11B.
Crossing over and entering the second seal area 17B by the outflow side sealing member 17, and the large end 15 of the fan-shaped opening 15 matches the peripheral edge of the outlet flow passage 11B without entering the outlet flow passage 11B, The fan-shaped opening 15 is widely opened in the entire range of the outlet flow path 11B in the rotation circumferential direction of the ball 12.
【００２１】また、ボール弁１０は、ボール１２の流過
孔１３が、円形開口１４と扇側開口１５とをテーパ状流
路面１３Ａ（図２（Ａ））等により滑らかにつなぐ弁内
流路を形成するものとしている。In the ball valve 10, the passage hole 13 of the ball 12 smoothly connects the circular opening 14 and the fan-side opening 15 with the tapered passage surface 13A (FIG. 2A) or the like. Shall be formed.
【００２２】また、ボール弁１０は、ボール１２の円形
開口１４側、中間部、扇形開口１５側のそれぞれに、流
過孔１３をボール１２回りの弁室１１Ｃに連通する孔状
の連通路１９Ａ、１９Ｂ、１９Ｃを備えている。ボール
１２の流過孔１３が円形開口１４側から扇形開口１５側
へと縮流することによる流過孔１３内での静圧変化によ
り、連通路１９Ａ、１９Ｂでは流体が流過孔１３の側か
ら弁室１１Ｃの側へと噴出し、連通路１９Ｃでは流体が
弁室１１Ｃから流過孔１３の側へと吸い込まれるものと
なる（図２（Ａ）、（Ｂ））。The ball valve 10 has a hole-shaped communication passage 19A which connects the flow hole 13 to the valve chamber 11C around the ball 12 on each of the circular opening 14 side, the intermediate portion, and the fan-shaped opening 15 side of the ball 12. , 19B, 19C. Due to the static pressure change in the flow hole 13 due to the flow hole 13 of the ball 12 contracting from the circular opening 14 side to the fan-shaped opening 15 side, the fluid is in the communication passages 19A and 19B on the flow hole 13 side. From the valve chamber 11C to the valve chamber 11C side, and the fluid is sucked from the valve chamber 11C to the flow hole 13 side in the communication passage 19C (FIGS. 2A and 2B).
【００２３】以下、本実施例の作用について説明する。 弁全閉時に、扇形開口１５の尖端部１５Ａが出口流路
直近の流出側シール部材１７による第１のシール領域１
７Ａに設定されている。従って、操作部１８による弁の
開操作後、扇形開口１５の尖端部１５Ａがシール部材１
７を通過して出口流路１１Ｂに到達するまでの遊動範囲
が短く、流体の流れ始めが早い。The operation of this embodiment will be described below. When the valve is fully closed, the tip end portion 15A of the fan-shaped opening 15 has the first sealing region 1 by the outflow side sealing member 17 in the vicinity of the outlet flow path.
It is set to 7A. Therefore, after the opening operation of the valve by the operation portion 18, the tip portion 15A of the fan-shaped opening 15 has the seal member 1
The floating range before passing through 7 to reach the outlet flow path 11B is short, and the fluid starts to flow quickly.
【００２４】弁全開時に、扇形開口１５の尖端部１５
Ａが出口流路１１Ｂを横切って流出側シール部材１７に
よる第２のシール領域１７Ｂに侵入するように設定され
ている。従って、扇形開口１５が出口流路１１Ｂにつな
がるボール１２の有効回動角度範囲が比較的大きく、操
作部１８による流体制御帯域が広い。When the valve is fully opened, the tip 15 of the fan-shaped opening 15 is opened.
It is set so that A crosses the outlet flow path 11B and enters the second seal area 17B formed by the outflow side seal member 17. Therefore, the effective rotation angle range of the ball 12 in which the fan-shaped opening 15 is connected to the outlet flow path 11B is relatively large, and the fluid control zone by the operation portion 18 is wide.
【００２５】扇形開口１５の形状により上記の流体
制御帯域を広げるものであるから、操作部１８の分解能
まで影響を及ぼすことがなく、流体制御精度を向上でき
る。Since the shape of the fan-shaped opening 15 widens the above-mentioned fluid control band, the fluid control accuracy can be improved without affecting the resolution of the operating portion 18.
【００２６】ボール１２の流過孔１３が、円形開口と
扇形開口１５とをテーパ状流路面１３Ａ等により滑らか
につなぐ弁内流路を形成したから、弁の流路抵抗を小さ
くできる。Since the flow-through hole 13 of the ball 12 forms an in-valve flow passage that smoothly connects the circular opening and the fan-shaped opening 15 with the tapered flow passage surface 13A, the flow passage resistance of the valve can be reduced.
【００２７】ボール１２の円形開口側の流過孔１３を
該ボール１２回りの弁座に連通する連通路１９Ａと、扇
形開口１５側の流過孔１３を該ボール１２回りの弁室１
１Ｃに連通する連通路１９Ｃとを備えた。従って、ボー
ル１２の流過孔１３は円形開口側から扇形開口１５側に
向けて縮流するものとなり、円形開口に比して扇形開口
１５の流速が速くなる。これにより、円形開口側での静
圧が扇形開口１５側に比して低くなり、ここで差圧が生
ずるので、円形開口側では流体が連通路１９Ａを通って
弁室１１Ｃへ噴出し、扇形開口側では流体が連通路１９
Ｃを通って流過孔１３側へ吸い込まれることになる。こ
のようにして流体は、ボール１２内の流過孔１３とボー
ル１２回りの弁室とを同時に流れ、弁室をデッドスペー
ス（液溜まり）とすることがない。よって、デッドスペ
ース内の流体がバクテリアを発生する等の不都合を招く
ことがなく、純水、超純水の流量制御等に好適に用いる
ことができる。A communication passage 19A for communicating the flow passage hole 13 on the side of the circular opening of the ball 12 with the valve seat around the ball 12 and the flow passage hole 13 on the side of the fan-shaped opening 15 for the valve chamber 1 around the ball 12.
And a communication passage 19C communicating with 1C. Therefore, the flow hole 13 of the ball 12 contracts from the circular opening side toward the fan-shaped opening 15 side, and the flow velocity of the fan-shaped opening 15 becomes faster than that of the circular opening. As a result, the static pressure on the side of the circular opening becomes lower than that on the side of the fan-shaped opening 15, and a differential pressure is generated there. Therefore, on the side of the circular opening, the fluid is ejected to the valve chamber 11C through the communication passage 19A, and is fan-shaped. On the opening side, the fluid is in the communication passage 19
It will be sucked into the flow hole 13 side through C. In this way, the fluid simultaneously flows through the flow hole 13 in the ball 12 and the valve chamber around the ball 12, and the valve chamber does not become a dead space (liquid pool). Therefore, the fluid in the dead space does not cause inconvenience such as generation of bacteria and can be suitably used for flow rate control of pure water or ultrapure water.
【００２８】尚、ボール弁１０にあっては、扇形開口１
５の尖端部１５Ａで交わる２辺ａ、ｂを開口中心線方向
に膨出した凸状カーブとしているので、流量特性をイコ
ールパーセント特性（弁開度と同じ増加分に対して流量
の増加割合が等しいもの）とするものとなる。The ball valve 10 has a fan-shaped opening 1
Since the two sides a and b intersecting at the apex portion 15A of No. 5 are convex curves that bulge in the direction of the opening center line, the flow rate characteristics are equal percent characteristics (the increase rate of the flow rate is the same as the valve opening degree). (Equal)).
【００２９】（第２実施例）（図４） 第２実施例のボール弁２０が、前記ボール弁１０と異な
る点は、弁室１１Ｃの液溜りを防止するためにボール１
２の円形開口１４側と扇形開口１５側のそれぞれに設け
た孔状の連通路１９Ａ、１９Ｃを、スリット状の連通路
２１Ａ、２１Ｂとしたことのみにある。(Second Embodiment) (FIG. 4) The ball valve 20 of the second embodiment is different from the ball valve 10 in that the ball 1 is used in order to prevent the accumulation of liquid in the valve chamber 11C.
The hole-shaped communication passages 19A and 19C provided on the two circular openings 14 side and the fan-shaped opening 15 side are only slit-shaped communication passages 21A and 21B.
【００３０】（第３実施例）（図５） 第３実施例のボール弁３０が、前記ボール弁１０と異な
る点は、扇形開口１５の尖端部１５Ａで交わる２辺ａ、
ｂを開口中心線に対して凹状カーブとすることにより流
量特性をリニア特性（弁開度に正比例して流量を変化さ
せるもの）とするようにしたことのみにある。(Third Embodiment) (FIG. 5) The ball valve 30 of the third embodiment is different from the ball valve 10 in that two sides a intersect at the tip 15A of the fan-shaped opening 15,
It is only to make the flow rate characteristic linear (that is, to change the flow rate in direct proportion to the valve opening) by making b a concave curve with respect to the opening center line.
【００３１】以上、本発明の実施例を図面により詳述し
たが、本発明の具体的な構成はこの実施例に限られるも
のではなく、本発明の要旨を逸脱しない範囲の設計の変
更等があっても本発明に含まれる。例えば、操作部は電
気式アクチュエータによらず手動式とするものであって
も良い。また、純水、超純水の流体制御等に供しない場
合には、前述の連通路１９Ａ等を備えることを要しな
い。The embodiment of the present invention has been described in detail above with reference to the drawings. However, the specific configuration of the present invention is not limited to this embodiment, and changes in design within the scope not departing from the gist of the present invention can be made. Even if it exists, it is included in the present invention. For example, the operation unit may be a manual type instead of an electric actuator. Further, when not used for fluid control of pure water or ultrapure water, it is not necessary to provide the above-mentioned communication passage 19A.
【００３２】[0032]
【発明の効果】以上のように本発明によれば、ボール弁
において、操作部による開操作後の流体の流れ始めを早
く、操作部による流体制御帯域を広く、且つ流体制御精
度を向上することができる。As described above, according to the present invention, in the ball valve, the flow of fluid after the opening operation by the operating portion is started quickly, the fluid control zone by the operating portion is widened, and the fluid control accuracy is improved. You can
【図１】図１は第１実施例に係るボール弁を示す模式図
である。FIG. 1 is a schematic diagram showing a ball valve according to a first embodiment.
【図２】図２はボール弁の要部を示す模式図である。FIG. 2 is a schematic diagram showing a main part of a ball valve.
【図３】図３はボール弁の開度状態を示す模式図であ
る。FIG. 3 is a schematic diagram showing an opening state of a ball valve.
【図４】図４は第２実施例に係るボール弁の要部を示す
模式図である。FIG. 4 is a schematic diagram showing a main part of a ball valve according to a second embodiment.
【図５】図５は第３実施例に係るボール弁の要部を示す
模式図である。FIG. 5 is a schematic view showing a main part of a ball valve according to a third embodiment.
１０、２０、３０ ボール弁 １１ 弁箱 １１Ａ 入口流路 １１Ｂ 出口流路 １１Ｃ 弁室 １２ ボール １３Ａ テーパ状流路面 １３ 流過孔 １４ 円形開口 １５ 扇形開口 １５Ａ 尖端部 １６、１７ シール部材 １７Ａ 第１のシール領域 １７Ｂ 第２のシール領域 １８ 操作部 １８Ａ 弁棒 １９Ａ、１９Ｂ、１９Ｃ、２１Ａ、２１Ｂ 連通路 10, 20, 30 Ball valve 11 Valve box 11A Inlet channel 11B Outlet channel 11C Valve chamber 12 Ball 13A Tapered channel surface 13 Flow-through hole 14 Circular opening 15 Fan-shaped opening 15A Tip 16, 17 Sealing member 17A First Seal area 17B Second seal area 18 Operation part 18A Valve rod 19A, 19B, 19C, 21A, 21B Communication passage
───────────────────────────────────────────────────── フロントページの続き (72)発明者 若原 秀規 東京都港区虎ノ門３−４−７ 積水化学工 業株式会社内 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Hidenori Wakahara 3-4-7 Toranomon, Minato-ku, Tokyo Sekisui Chemical Co., Ltd.
Claims (3)
孔を有するボールと、このボールの両開口側にそれぞれ
接触するシール部材とを装着し、操作部とボールとを弁
棒を介して連結してなり、 ボールの流過孔の流入側の開口を円形とし、流出側の開
口を扇形としてなるボール弁において、 弁全閉時には扇形開口の尖端部が出口流路直近の流出側
シール部材による第１のシール領域に設定されるととも
に、弁全開時には扇形開口の尖端部が出口流路を横切っ
て流出側シール部材による第２のシール領域に侵入する
ように設定されてなることを特徴とするボール弁。1. A ball having a flow-through hole and a seal member, which comes into contact with both opening sides of the ball, are mounted between an inlet passage and an outlet passage of a valve box, and the operating portion and the ball are connected to each other. In a ball valve that is connected via a valve rod and has a circular opening on the inflow side of the ball passage hole and a fan-shaped opening on the outflow side, when the valve is fully closed, the tip of the fan-shaped opening is close to the outlet flow path. Is set in the first sealing area by the outflow side sealing member, and when the valve is fully opened, the tip of the fan-shaped opening is set so as to cross the outlet flow path and enter the second sealing area by the outflow side sealing member. Ball valve characterized by being.
開口とを滑らかにつなぐ弁内流路を形成してなる請求項
１記載のボール弁。2. The ball valve according to claim 1, wherein the flow hole of the ball forms an in-valve flow path that smoothly connects the circular opening and the fan-shaped opening.
ール回りの弁室に連通する連通路と、扇形開口側の流過
孔を該ボール回りの弁室に連通する連通路とを備えてな
る請求項１又は２記載のボール弁。3. A communication passage that communicates the flow passage hole on the circular opening side of the ball with the valve chamber around the ball, and a communication passage that communicates the flow passage hole on the fan opening side with the valve chamber around the ball. The ball valve according to claim 1 or 2, further comprising:
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7141345A JP3012171B2 (en) | 1995-05-17 | 1995-05-17 | Ball valve |
| TW085113949A TW324770B (en) | 1995-05-17 | 1996-11-14 | The ball valve |
| TW85114329A TW320587B (en) | 1995-05-17 | 1996-11-21 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7141345A JP3012171B2 (en) | 1995-05-17 | 1995-05-17 | Ball valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08312806A true JPH08312806A (en) | 1996-11-26 |
| JP3012171B2 JP3012171B2 (en) | 2000-02-21 |
Family
ID=15289808
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7141345A Expired - Lifetime JP3012171B2 (en) | 1995-05-17 | 1995-05-17 | Ball valve |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP3012171B2 (en) |
| TW (1) | TW320587B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998014727A1 (en) * | 1996-09-30 | 1998-04-09 | Sekisui Kagaku Kogyo Kabushiki Kaisha | Ball valve |
-
1995
- 1995-05-17 JP JP7141345A patent/JP3012171B2/en not_active Expired - Lifetime
-
1996
- 1996-11-21 TW TW85114329A patent/TW320587B/zh not_active IP Right Cessation
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998014727A1 (en) * | 1996-09-30 | 1998-04-09 | Sekisui Kagaku Kogyo Kabushiki Kaisha | Ball valve |
| US6021812A (en) * | 1996-09-30 | 2000-02-08 | Sekisui Kagaku Kogyo Kabushiki Kaisha & Ichinose Co., Ltd. | Ball plug valve |
Also Published As
| Publication number | Publication date |
|---|---|
| TW320587B (en) | 1997-11-21 |
| JP3012171B2 (en) | 2000-02-21 |
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