JP3344881B2 - Flow control valve - Google Patents
Flow control valveInfo
- Publication number
- JP3344881B2 JP3344881B2 JP28821595A JP28821595A JP3344881B2 JP 3344881 B2 JP3344881 B2 JP 3344881B2 JP 28821595 A JP28821595 A JP 28821595A JP 28821595 A JP28821595 A JP 28821595A JP 3344881 B2 JP3344881 B2 JP 3344881B2
- Authority
- JP
- Japan
- Prior art keywords
- valve
- valve body
- orifice plate
- flow path
- orifice
- 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.)
- Expired - Fee Related
Links
Landscapes
- Taps Or Cocks (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、可動オリフィス板
のオリフィスと固定オリフィス板のオリフィスとの重な
り具合を変えることにより流体の流量を制御する流量制
御弁に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flow control valve for controlling the flow rate of a fluid by changing the degree of overlap between an orifice of a movable orifice plate and an orifice of a fixed orifice plate.
【０００２】[0002]
【従来の技術】従来、この種の流量制御弁としては例え
ば実開平６−５８２８１号公報に示されるように、弁箱
内に、多数のオリフィスを有する円板状の可動弁体と固
定弁体とが備えられ、弁棒によって可動弁体を固定弁体
に対して摺動してオリフィスの位置をずらし、流体の流
量を制御するものがある。2. Description of the Related Art Conventionally, as a flow control valve of this kind, for example, as disclosed in Japanese Utility Model Application Laid-Open No. 6-58281, a disk-shaped movable valve body having a number of orifices and a fixed valve body are provided in a valve box. There is a type in which a movable valve body is slid with respect to a fixed valve body by a valve rod to shift the position of an orifice and control the flow rate of fluid.
【０００３】これによると、止水を行う場合、可動弁体
を固定弁体に対し摺動してオリフィスの位置をずらして
遮断することにより、可動弁体と固定弁体とが面接触し
て流体がシールされる。According to this, when water is stopped, the movable valve body is slid relative to the fixed valve body to shift the position of the orifice and shut off, so that the movable valve body and the fixed valve body come into surface contact with each other. The fluid is sealed.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、上記の
従来形式では、可動弁体と固定弁体との接触面（シール
面）の面圧が不足すると、可動弁体と固定弁体との面接
触によるシールが不十分となり、その結果、止水時にお
いて可動弁体と固定弁体との間から下流側へ流体が漏れ
るといった問題が発生した。However, in the above-mentioned conventional type, when the surface pressure of the contact surface (seal surface) between the movable valve element and the fixed valve element is insufficient, the surface contact between the movable valve element and the fixed valve element occurs. Insufficient sealing is achieved, and as a result, there is a problem that the fluid leaks downstream from between the movable valve body and the fixed valve body when water is stopped.
【０００５】そこで本発明のうち請求項１記載の発明
は、止水時における流体の漏れを防止することを目的と
したものである。Accordingly, an object of the present invention is to prevent fluid leakage when water is stopped.
【０００６】[0006]
【課題を解決するための手段】前述した目的を達成する
ために、本発明のうちで請求項１記載の発明は、弁箱内
に、全開位置と止水全閉位置との間で９０°旋回自在な
ボール状の弁体を設け、この弁体に、全開位置で弁箱流
路に連通しかつ止水全閉位置で弁箱流路から遮断する弁
体流路を形成し、上記弁体流路の下流端に、多数のオリ
フィスを有する球面状の可動オリフィス板を設け、上記
弁体よりも下流側の弁箱流路に、多数のオリフィスを有
する球面状の固定オリフィス板を設け、上記固定オリフ
ィス板は上記可動オリフィス板に対して摺接しながら重
複可能であり、上記全開位置において、可動オリフィス
板のオリフィスが固定オリフィス板のオリフィスに重な
り合うように構成され、上記弁箱内に、弁体よりも上流
側の弁箱流路に位置しかつ止水全閉位置の弁体の外面に
圧接してこの弁体と弁箱の内周面との間をシールするリ
ング状の弁座を装着したことを特徴としたものである。In order to achieve the above-mentioned object, according to the first aspect of the present invention, a valve housing is provided with a 90 ° angle between a fully open position and a completely shut off position. A swivelable ball-shaped valve element is provided, and the valve element is formed with a valve element flow path communicating with the valve box flow path at the fully open position and shutting off from the valve box flow path at the water shutoff fully closed position; At the downstream end of the body flow path, a spherical movable orifice plate having a number of orifices is provided, and a spherical fixed orifice plate having a number of orifices is provided in a valve box flow path downstream of the valve body. Above fixed orifice
The orifice plate is heavy while sliding against the movable orifice plate.
In the fully open position, the movable orifice
Plate orifice overlaps fixed orifice plate orifice
It is configured to fit Ri, in the valve box, pressed against the outer surface of the positioned upstream valve body flow passage than the valve body and the water shut-off fully closed position of the valve body of the valve body and the valve box A ring-shaped valve seat that seals between the peripheral surface and the peripheral surface is mounted.
【０００７】これによると、弁体を止水全閉位置まで旋
回させることにより、弁体流路が弁箱流路から遮断され
て流体が止水される。この際、弁体の上流側において、
弁座が弁体の外面に圧接しているため、弁体の外面と弁
箱の内周面との間が確実にシールされ、止水時における
流体の漏れを防止することができる。[0007] According to this, by turning the valve element to the water shut-off fully closed position, the valve element flow path is cut off from the valve box flow path, and the fluid is stopped. At this time, on the upstream side of the valve body,
Since the valve seat is in pressure contact with the outer surface of the valve body, the space between the outer surface of the valve body and the inner peripheral surface of the valve box is reliably sealed, and leakage of fluid when water is stopped can be prevented.
【０００８】[0008]
【発明の実施の形態】以下、本発明の実施の形態を図面
に基づいて説明する。図３に示すように、弁箱１の内部
には、弁箱流路２と、この弁箱流路２に直交する軸心３
を中心にして全開位置Ａ（図１参照）と止水全閉位置Ｂ
（図２参照）との間で９０°旋回自在なボール状の弁体
４とが設けられている。上記弁箱１には、弁体４を旋回
させる弁棒５が上記軸心３に沿って挿通されており、こ
の弁棒５の下端が弁体４に連結されている。Embodiments of the present invention will be described below with reference to the drawings. As shown in FIG. 3, inside the valve case 1, a valve case flow path 2 and an axial center 3 orthogonal to the valve case flow path 2 are provided.
Fully open position A (see FIG. 1) and water shutoff fully closed position B
(See FIG. 2). A valve stem 5 for rotating the valve body 4 is inserted through the valve box 1 along the axis 3, and the lower end of the valve stem 5 is connected to the valve body 4.
【０００９】上記弁体４には、全開位置Ａで弁箱流路２
に連通しかつ止水全閉位置Ｂで弁箱流路２から遮断する
弁体流路６と、この弁体流路６の下流端を覆う球面状の
可動オリフィス板７とが設けられている。上記可動オリ
フィス板７には多数のオリフィス８が形成されている。The valve body 4 has a valve box passage 2 at a fully open position A.
And a spherical movable orifice plate 7 that covers the downstream end of the valve body flow path 6 and that is closed from the valve box flow path 2 at the water shut-off fully closed position B. . The movable orifice plate 7 has a number of orifices 8 formed therein.
【００１０】また、上記弁体４よりも下流側の弁箱流路
２には、固定オリフィス板９を有する筒体10が下流側か
ら弁箱１の内部に嵌入され、ねじ11を介して弁箱１に連
結固定されている。上記固定オリフィス板９は、筒体10
の円筒部12の上流端を覆うようにして設けられ、上記可
動オリフィス板７に対して摺接しながら重複可能な球面
状に形成されている。上記固定オリフィス板９には多数
のオリフィス13が形成されている。A cylindrical body 10 having a fixed orifice plate 9 is fitted into the inside of the valve case 1 from the downstream side in the valve case flow path 2 on the downstream side of the valve body 4. It is connected and fixed to the box 1. The fixed orifice plate 9 includes a cylindrical body 10
Is provided so as to cover the upstream end of the cylindrical portion 12, and is formed in a spherical shape capable of overlapping while slidingly contacting the movable orifice plate 7. The fixed orifice plate 9 has a number of orifices 13 formed therein.
【００１１】また、上記弁箱１の内部には、弁体４より
も上流側の弁箱流路２に位置しかつ止水全閉位置Ｂの弁
体４の外面に圧接してこの弁体４と弁箱１の内周面との
間をシールするリング状の弁座14が装着されている。Further, the valve body 1 is located in the valve case flow path 2 upstream of the valve body 4 and is in pressure contact with the outer surface of the valve body 4 at the water shutoff fully closed position B inside the valve body 1. A ring-shaped valve seat 14 that seals between the inner peripheral surface 4 and the inner peripheral surface of the valve box 1 is mounted.
【００１２】以下、上記構成における作用を説明する。
図１，図３に示すように、弁棒５の回転により弁体４を
全開位置Ａまで旋回させることにより、可動オリフィス
板７が固定オリフィス板９に重複して、可動オリフィス
板７のオリフィス８が固定オリフィス板９のオリフィス
13に一致して完全に重なり合う。これにより、弁体流路
６と弁箱流路２とが上記両オリフィス８，13を介して完
全に連通するため、流体の流量が最大になる。The operation of the above configuration will be described below.
As shown in FIGS. 1 and 3, the movable orifice plate 7 overlaps with the fixed orifice plate 9 by rotating the valve body 4 to the fully open position A by the rotation of the valve rod 5, and the orifice 8 of the movable orifice plate 7 is rotated. Is the orifice of the fixed orifice plate 9
13 and completely overlap. As a result, the valve element flow path 6 and the valve box flow path 2 are completely communicated with each other through the orifices 8 and 13, so that the flow rate of the fluid is maximized.
【００１３】また、流量を最大流量以下に絞る場合は、
弁体４を全開位置Ａと止水全閉位置Ｂとの中間位置まで
回転させて、図５に示すように可動オリフィス板７のオ
リフィス８と固定オリフィス板９のオリフィス13との重
なり合う割合を変化させることにより、流量を絞ること
ができる。さらに、図６に示すように、可動オリフィス
板７のオリフィス８が固定オリフィス板９のオリフィス
13に対してオリフィスの穴径分だけずれる位置（以下、
制御全閉位置Ｃと称する）まで弁体４を回転させて上記
オリフィス８とオリフィス13との重複部分を無くした場
合、弁体流路６と弁箱流路２とは可動オリフィス板７と
固定オリフィス板９とによって遮断され、流量が０にな
る。このように、弁体４の回転位置を流量が最大になる
全開位置Ａ（図１参照）と流量が０になる制御全閉位置
Ｃ（図６参照）との間で変えることにより、小ストロー
クで、通常の流量制御が行われる。When the flow rate is reduced to the maximum flow rate or less,
By rotating the valve element 4 to an intermediate position between the fully open position A and the water stop fully closed position B, the overlapping ratio between the orifice 8 of the movable orifice plate 7 and the orifice 13 of the fixed orifice plate 9 is changed as shown in FIG. By doing so, the flow rate can be reduced. Further, as shown in FIG. 6, the orifice 8 of the movable orifice plate 7 corresponds to the orifice of the fixed orifice plate 9.
13 position shifted by the orifice hole diameter (hereinafter referred to as
When the valve body 4 is rotated to the control fully closed position C to eliminate the overlap between the orifice 8 and the orifice 13, the valve body flow path 6 and the valve box flow path 2 are fixed to the movable orifice plate 7. The flow is cut off by the orifice plate 9 and becomes zero. As described above, by changing the rotational position of the valve body 4 between the fully open position A (see FIG. 1) where the flow rate becomes maximum and the control fully closed position C (see FIG. 6) where the flow rate becomes 0, the small stroke is obtained. Then, normal flow rate control is performed.
【００１４】また、流量制御以外の目的（例えば保守点
検や非常時）で流体を完全に止水する場合には、図２に
示すように、弁体４を止水全閉位置Ｂまで旋回させるこ
とにより、弁体流路６が弁箱流路２から遮断されて流体
が止水される。この際、弁体４の上流側において、弁座
14が弁体４の外面に圧接しているため、弁体４の外面と
弁箱１の内周面との間が確実にシールされ、止水時にお
ける流体の漏れを防止することができる。When the fluid is completely stopped for a purpose other than the flow control (for example, for maintenance or an emergency), the valve body 4 is turned to the completely closed position B as shown in FIG. As a result, the valve element flow path 6 is shut off from the valve box flow path 2 and the fluid is stopped. At this time, on the upstream side of the valve body 4, the valve seat
Since the valve 14 is pressed against the outer surface of the valve body 4, the space between the outer surface of the valve body 4 and the inner peripheral surface of the valve box 1 is reliably sealed, so that leakage of fluid when water is stopped can be prevented.
【００１５】[0015]
【発明の効果】以上説明したように、本発明のうち請求
項１記載の発明によると、弁体を止水全閉位置まで旋回
させることにより、弁体流路が弁箱流路から遮断されて
流体が止水される。この際、弁体の上流側において、弁
座が弁体の外面に圧接しているため、弁体の外面と弁箱
の内周面との間が確実にシールされ、止水時における流
体の漏れを防止することができる。As described above, according to the first aspect of the present invention, the valve element channel is shut off from the valve box channel by turning the valve element to the water shut-off fully closed position. Fluid is stopped. At this time, since the valve seat is in pressure contact with the outer surface of the valve body on the upstream side of the valve body, the gap between the outer surface of the valve body and the inner peripheral surface of the valve box is reliably sealed, and the fluid is not sealed when water is stopped. Leakage can be prevented.
【図１】本発明の実施の形態における流量制御弁の全開
位置における横断面図である。FIG. 1 is a cross-sectional view of a flow control valve according to an embodiment of the present invention at a fully opened position.
【図２】流量制御弁の止水全閉位置における横断面図で
ある。FIG. 2 is a cross-sectional view of the flow control valve at a completely closed water stop position.
【図３】流量制御弁の縦断面図である。FIG. 3 is a longitudinal sectional view of a flow control valve.
【図４】流量制御弁の正面図である。FIG. 4 is a front view of the flow control valve.
【図５】流量を最大流量以下に絞る場合の可動オリフィ
ス板のオリフィスと固定オリフィス板のオリフィスとの
位置関係を示す断面図である。FIG. 5 is a cross-sectional view showing a positional relationship between an orifice of a movable orifice plate and an orifice of a fixed orifice plate when the flow rate is reduced to a maximum flow rate or less.
【図６】流量を０にする場合の可動オリフィス板のオリ
フィスと固定オリフィス板のオリフィスとの位置関係を
示す断面図である。FIG. 6 is a sectional view showing a positional relationship between an orifice of a movable orifice plate and an orifice of a fixed orifice plate when the flow rate is set to zero.
１ 弁箱 ２ 弁箱流路 ４ 弁体 ６ 弁体流路 ７ 可動オリフィス板 ８ オリフィス ９ 固定オリフィス板 13 オリフィス 14 弁座 Ａ 全開位置 Ｂ 止水全閉位置 DESCRIPTION OF SYMBOLS 1 Valve case 2 Valve case flow path 4 Valve element 6 Valve element flow path 7 Movable orifice plate 8 Orifice 9 Fixed orifice plate 13 Orifice 14 Valve seat A Fully open position B Fully closed water position
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平３−28580（ＪＰ，Ａ) 特開 昭54−69834（ＪＰ，Ａ) 実開 平６−58281（ＪＰ，Ｕ) 実開 平２−98272（ＪＰ，Ｕ) 実開 昭57−145897（ＪＰ，Ｕ) 実開 昭54−78935（ＪＰ，Ｕ) 実開 昭56−4069（ＪＰ，Ｕ) 実開 昭55−181069（ＪＰ，Ｕ) 実開 昭63−5249（ＪＰ，Ｕ) 実開 昭61−4073（ＪＰ，Ｕ) 実公 平１−12033（ＪＰ，Ｙ２) 米国特許3880191（ＵＳ，Ａ) 西独国実用新案公開2654769（ＤＥ, Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) F16K 5/00 - 5/22 F16K 3/30 - 3/36 F16K 47/00 - 47/06 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-3-28580 (JP, A) JP-A-54-69834 (JP, A) JP-A-6-58281 (JP, U) JP-A-2-28 98272 (JP, U) Fully open 1979-545897 (JP, U) Fully open 1979-78935 (JP, U) Fully open 1981 to 4069 (JP, U) Fully open 1979-581069 (JP, U) Japanese Utility Model Application Showa 63-5249 (JP, U) Japanese Utility Model Application Showa 61-4073 (JP, U) Japanese Utility Model Application No. 1-12033 (JP, Y2) U.S. Pat. A) (58) Field surveyed (Int. Cl. 7 , DB name) F16K 5/00-5/22 F16K 3/30-3/36 F16K 47/00-47/06
Claims (1)
間で９０°旋回自在なボール状の弁体を設け、この弁体
に、全開位置で弁箱流路に連通しかつ止水全閉位置で弁
箱流路から遮断する弁体流路を形成し、上記弁体流路の
下流端に、多数のオリフィスを有する球面状の可動オリ
フィス板を設け、上記弁体よりも下流側の弁箱流路に、
多数のオリフィスを有する球面状の固定オリフィス板を
設け、上記固定オリフィス板は上記可動オリフィス板に
対して摺接しながら重複可能であり、上記全開位置にお
いて、可動オリフィス板のオリフィスが固定オリフィス
板のオリフィスに重なり合うように構成され、上記弁箱
内に、弁体よりも上流側の弁箱流路に位置しかつ止水全
閉位置の弁体の外面に圧接してこの弁体と弁箱の内周面
との間をシールするリング状の弁座を装着したことを特
徴とする流量制御弁。1. A ball-shaped valve element which is rotatable by 90 ° between a fully open position and a completely closed water stop position in a valve box, and communicates with the valve element passage at the fully open position. In addition, a valve body flow path that is cut off from the valve body flow path at the water stop fully closed position is formed, and a spherical movable orifice plate having a number of orifices is provided at a downstream end of the valve body flow path. Also in the downstream valve case flow path ,
A spherical fixed orifice plate having a number of orifices is provided, and the fixed orifice plate is attached to the movable orifice plate.
It is possible to overlap while sliding against
And the orifice of the movable orifice plate is a fixed orifice
The valve body is configured so as to overlap the orifice of the plate. The valve body is located in the valve case flow path upstream of the valve body and presses against the outer surface of the valve body at the water shut-off fully closed position. A flow control valve having a ring-shaped valve seat for sealing between the inner peripheral surface of the box and the inner surface of the box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28821595A JP3344881B2 (en) | 1995-11-07 | 1995-11-07 | Flow control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28821595A JP3344881B2 (en) | 1995-11-07 | 1995-11-07 | Flow control valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09133227A JPH09133227A (en) | 1997-05-20 |
| JP3344881B2 true JP3344881B2 (en) | 2002-11-18 |
Family
ID=17727315
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28821595A Expired - Fee Related JP3344881B2 (en) | 1995-11-07 | 1995-11-07 | Flow control valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3344881B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4563770B2 (en) * | 2004-10-25 | 2010-10-13 | 株式会社山武 | Low noise rotary valve |
-
1995
- 1995-11-07 JP JP28821595A patent/JP3344881B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH09133227A (en) | 1997-05-20 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |