JPH0512588B2 - - Google Patents
Info
- Publication number
- JPH0512588B2 JPH0512588B2 JP61257766A JP25776686A JPH0512588B2 JP H0512588 B2 JPH0512588 B2 JP H0512588B2 JP 61257766 A JP61257766 A JP 61257766A JP 25776686 A JP25776686 A JP 25776686A JP H0512588 B2 JPH0512588 B2 JP H0512588B2
- Authority
- JP
- Japan
- Prior art keywords
- valve
- valve seat
- valve body
- gap
- fluid
- 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 - Lifetime
Links
- 239000012530 fluid Substances 0.000 claims description 15
- 238000007789 sealing Methods 0.000 claims description 6
- 230000000694 effects Effects 0.000 description 6
- 239000002184 metal Substances 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Landscapes
- Taps Or Cocks (AREA)
Description
【発明の詳細な説明】
産業上の利用分野
本発明は弁体と弁座が流体圧力により移動する
フローテイング型ボール弁であつて、この弁座の
移動を規制する構造に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a floating ball valve in which a valve body and a valve seat are moved by fluid pressure, and to a structure for regulating the movement of the valve seat.
従来の技術
従来からフローテイング型ボール弁として、ス
プリングにより両方の弁座を常時弁体に押圧する
構造は、特公昭48−25332号公報で公知である。BACKGROUND ART Conventionally, a structure of a floating ball valve in which both valve seats are constantly pressed against a valve body by a spring is known from Japanese Patent Publication No. 48-25332.
発明が解決しようとする問題点
しかし、上記のような構造の場合、いずれか一
方より高圧の流体が流れると、弁座と弁体はこの
流体圧力により流れ軸線方向に移動する。流体圧
力が高くなるとこの移動量が大きくなつて、弁体
の回転軸と弁軸との芯がずれて回転時の抵抗が大
きくなるか、弁体と弁軸との嵌合が離脱し弁軸の
回転操作が弁体に伝達出来ない等の欠点が生じる
危険性があつた。Problems to be Solved by the Invention However, in the case of the above-described structure, when fluid with a higher pressure than either one flows, the valve seat and the valve body move in the flow axis direction due to this fluid pressure. As the fluid pressure increases, this amount of movement increases, causing the rotational axis of the valve body to become misaligned with the valve stem, increasing resistance during rotation, or causing the valve body and valve stem to become uncoupled, causing the valve stem to become misaligned. There was a risk that disadvantages such as the rotational operation of the valve could not be transmitted to the valve body.
本発明は上記のような欠点を解消し、弁体と弁
座とが一体となつて移動する量を制限することに
より、弁体と弁軸とのずれの発生を防止すると共
に流体圧力の高いものにも安心して使用できるボ
ール弁を提供することを目的としている。 The present invention solves the above-mentioned drawbacks, and by limiting the amount by which the valve body and valve seat move together, it prevents the occurrence of misalignment between the valve body and the valve stem, and also prevents the occurrence of misalignment between the valve body and the valve stem. The purpose is to provide a ball valve that can be used safely even on objects.
問題点を解決するための手段
本発明は上記目的達成のため、弁体と弁座が流
体の圧力により移動可能としたフローテイング型
ボール弁において、弁座保持具の背面にバネを設
け、弁座を弁体に押圧するようにし、この弁座保
持具の外周面と弁箱の内周面との間に外方に向か
つてテーパー状の円錐形とした隙間を設け、弁体
と弁座の移動量を制限したボール弁とした。Means for Solving the Problems In order to achieve the above object, the present invention provides a floating ball valve in which a valve body and a valve seat are movable by the pressure of a fluid, in which a spring is provided on the back surface of a valve seat holder. The seat is pressed against the valve body, and an outwardly tapered conical gap is provided between the outer circumferential surface of the valve seat holder and the inner circumferential surface of the valve body. The valve is a ball valve that limits the amount of movement.
作 用
本発明では弁座保持具の外周面と弁箱の内周面
との間に外方に向つてテーパー状の円錐形をした
微少な隙間を設けたので、高圧流体が流入し弁体
が流体の流れ軸線方向に移動しても、流出側の弁
座保持具の壁が弁箱内周面と接触することによ
り、必要以上に弁体が移動しないようになつた。
従つて、弁軸と弁体の嵌合が離脱するようなこと
なく回転操作が円滑に行なえ、また弁座保持具と
弁箱の接触により、クサビ効果が働き、メタルシ
ールとなつて、この部分の流体の漏洩も無くなつ
た。Function: In the present invention, a small conical gap tapered outward is provided between the outer circumferential surface of the valve seat holder and the inner circumferential surface of the valve body, so that high-pressure fluid can flow into the valve body. Even if the valve body moves in the direction of the fluid flow axis, the wall of the valve seat holder on the outflow side comes into contact with the inner peripheral surface of the valve box, thereby preventing the valve body from moving more than necessary.
Therefore, the rotation operation can be performed smoothly without the valve stem and valve body coming uncoupled, and the contact between the valve seat holder and the valve body creates a wedge effect, forming a metal seal and sealing this part. No more fluid leakage.
弁座の背面にはバネを設けており、常に両弁座
は弁体に完全に密着しているため流体の漏洩はな
い。また、弁座が熱膨張しても回転トルクは過大
にならない。 A spring is installed on the back of the valve seat, and both valve seats are always in complete contact with the valve body, so there is no fluid leakage. Furthermore, even if the valve seat expands thermally, the rotational torque will not become excessive.
弁箱と弁体との隙間に入つた流体が熱膨張し、
この部分の圧力が上昇した場合はバネが圧縮され
弁座と弁体の接触圧力が下がりこの部分より流体
を逃すことができる等の作用を有する。 The fluid that enters the gap between the valve body and the valve body expands thermally,
When the pressure in this part increases, the spring is compressed and the contact pressure between the valve seat and the valve element decreases, allowing fluid to escape from this part.
実施例
以下、図面に示した実施例につき説明する。
１，２は弁箱、３は弁体である。４は弁座、５は
弁座保持具、６はＯリングである。７はバネで、
弁座保持具５の背面に設けられ、弁座４と弁座保
持具５はバネ７により弁体３へ押圧されている。
８は弁体３に取付けた弁軸である。９は隙間で、
弁座保持具５の外周面と弁座１又は２との間に設
けられている。第１図に示す通り隙間９は外方側
へテーパー状の円錐形をしており、弁箱１又は２
の内周面も同様の円錐形をしている。このように
隙間９により弁体３と弁座４及び弁座保持具５と
が一体となつて、流れ軸線方向に移動する量を制
御している。また、円錐形とすることにより、弁
体３と弁座４とが流体の高圧により移動した場
合、円錐形の隙間がクサビ効果を発揮して、メタ
ルシールの作用も生じる。Embodiments Hereinafter, embodiments shown in the drawings will be described.
1 and 2 are valve boxes, and 3 is a valve body. 4 is a valve seat, 5 is a valve seat holder, and 6 is an O-ring. 7 is a spring,
The valve seat holder 5 is provided on the back surface of the valve seat holder 5, and the valve seat 4 and the valve seat holder 5 are pressed against the valve body 3 by a spring 7.
8 is a valve shaft attached to the valve body 3. 9 is a gap,
It is provided between the outer peripheral surface of the valve seat holder 5 and the valve seat 1 or 2. As shown in Fig. 1, the gap 9 has a conical shape that tapers outward.
The inner circumferential surface of the tube also has a similar conical shape. In this manner, the gap 9 controls the amount by which the valve body 3, valve seat 4, and valve seat holder 5 move together in the flow axis direction. Moreover, by forming the conical shape, when the valve body 3 and the valve seat 4 move due to high pressure of the fluid, the conical gap exhibits a wedge effect, and a metal seal effect is also produced.
第２図に示したのは、弁座保持具の他実施例で
ある。弁座保持具１０では弁箱１１の内周面との
間で隙間１２を形成しているが、対向面は平面と
突部とになつている。 FIG. 2 shows another embodiment of the valve seat holder. In the valve seat holder 10, a gap 12 is formed between the valve seat holder 10 and the inner circumferential surface of the valve box 11, but the opposing surface is a flat surface and a protrusion.
隙間部に自封性を持たす場合は、弁座４の内径
ａと弁座保持具５の隙間部最大径ｂおよび最小径
ｃとの間の関係を、下記により求めることができ
る。 When the gap has self-sealing properties, the relationship between the inner diameter a of the valve seat 4 and the maximum diameter b and minimum diameter c of the gap of the valve seat holder 5 can be determined as follows.
π／４×a2＝ｅ×π／４（b2−c2） ｅはシールするために必要な係数である。 π/4×a 2 =e×π/4(b 2 −c 2 ) e is a coefficient necessary for sealing.
隙間は実験によれば、呼び径50Aで圧力20Kg／
cm2のとき0.3mmが適当であつた。しかし、これは
圧力、温度等により変化し、これに限定するもの
ではない。 According to experiments, the gap has a nominal diameter of 50A and a pressure of 20Kg/
For cm 2 , 0.3 mm was appropriate. However, this varies depending on pressure, temperature, etc., and is not limited thereto.
図面では弁座保持具に弁座を取付けているが弁
座を弁座保持具と一体とした形状でもよい。 In the drawings, the valve seat is attached to the valve seat holder, but the valve seat may be integrated with the valve seat holder.
さらに、バネは図面では皿バネを使用している
がコイルバネ等他のバネ又はゴム等の弾性体でも
よい。 Further, although a disc spring is used as the spring in the drawings, other springs such as a coil spring or an elastic body such as rubber may be used.
発明の効果
本発明は上記のような構成としたので、弁体を
介して押圧される弁座と弁座保持具の移動量を制
限することによる流体のシール効果は十分であ
り、流体圧力が高くなつて、弁体と弁座が一体的
に移動する場合にも、テーパー状の微少隙間の範
囲によつて移動量が制限され且つ密接してメタル
シール効果が生じるので、弁体と弁軸との嵌合部
にずれが生じるような危険性はなくなつた。Effects of the Invention Since the present invention has the above-described configuration, the fluid sealing effect by limiting the amount of movement of the valve seat and the valve seat holder pressed through the valve body is sufficient, and the fluid pressure is reduced. Even when the valve body and valve seat move together, the amount of movement is limited by the range of the tapered minute gap and the close contact creates a metal sealing effect, so the valve body and valve stem move in unison. There is no longer any risk of misalignment at the fitting part.
第１図は本発明の一実施例を示す断面図、第２
図は他実施例を示す要部断面図である。
１，２，１１…弁箱、３…弁体、４…弁座、
５，１０…弁座保持具、７…バネ、９，１２…隙
間。
FIG. 1 is a cross-sectional view showing one embodiment of the present invention, and FIG.
The figure is a sectional view of a main part showing another embodiment. 1, 2, 11...valve box, 3...valve body, 4...valve seat,
5, 10... Valve seat holder, 7... Spring, 9, 12... Gap.
Claims (1)
たフローテイング型ボール弁において、弁座保持
具の背面にバネを設け、弁座を弁体に押圧するよ
うにし、この弁座保持具の外周面と弁箱の内周面
との間に外方に向つてテーパー状の円錐形とした
隙間を設け、弁体と弁座の移動量を制限したこと
を特徴とするボール弁。 ２ 隙間部分を自封性のある寸法とした特許請求
の範囲第１項記載のボール弁。[Scope of Claims] 1. A floating ball valve in which the valve body and the valve seat are movable by the pressure of fluid, a spring is provided on the back of the valve seat holder to press the valve seat against the valve body, A feature is that an outwardly tapered conical gap is provided between the outer circumferential surface of the valve seat holder and the inner circumferential surface of the valve body to limit the amount of movement of the valve body and valve seat. ball valve. 2. The ball valve according to claim 1, in which the gap portion is dimensioned to be self-sealing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61257766A JPS6388381A (en) | 1986-10-28 | 1986-10-28 | Ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61257766A JPS6388381A (en) | 1986-10-28 | 1986-10-28 | Ball valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6388381A JPS6388381A (en) | 1988-04-19 |
| JPH0512588B2 true JPH0512588B2 (en) | 1993-02-18 |
Family
ID=17310797
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61257766A Granted JPS6388381A (en) | 1986-10-28 | 1986-10-28 | Ball valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6388381A (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009034942A (en) | 2007-08-03 | 2009-02-19 | Fujifilm Corp | Ink jet recording medium |
| JP2010030196A (en) | 2008-07-30 | 2010-02-12 | Fujifilm Corp | Inkjet recording method |
| JP2010030197A (en) | 2008-07-30 | 2010-02-12 | Fujifilm Corp | Inkjet recording method |
| JP2016023798A (en) * | 2014-07-24 | 2016-02-08 | 日電工業株式会社 | Ball valve |
| JP6696088B2 (en) * | 2016-04-21 | 2020-05-20 | 前澤工業株式会社 | Non-sliding valve and its mounting method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4979830U (en) * | 1972-10-25 | 1974-07-10 |
-
1986
- 1986-10-28 JP JP61257766A patent/JPS6388381A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6388381A (en) | 1988-04-19 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| EXPY | Cancellation because of completion of term |