JP2638383B2 - Valve for differential pressure - Google Patents
Valve for differential pressureInfo
- Publication number
- JP2638383B2 JP2638383B2 JP11745792A JP11745792A JP2638383B2 JP 2638383 B2 JP2638383 B2 JP 2638383B2 JP 11745792 A JP11745792 A JP 11745792A JP 11745792 A JP11745792 A JP 11745792A JP 2638383 B2 JP2638383 B2 JP 2638383B2
- Authority
- JP
- Japan
- Prior art keywords
- valve
- valve body
- pressing
- differential pressure
- force
- 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
- Lift Valve (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、流体管路の流体の流れ
を開閉する弁に関し、特に背圧が微少となっても流体が
漏洩することなく確実に作動する微差圧用弁に関するも
のである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a valve for opening and closing the flow of a fluid in a fluid line, and more particularly to a valve for a small differential pressure which can be reliably operated without leakage even if the back pressure is very small. is there.
【０００２】[0002]
【従来の技術】従来、都市ガス等のガス器具その他の自
動開閉制御用の弁として、乾電池等を用いて作動させる
小型電磁弁が用いられている。都市ガス等の管路の利用
者末端に用いられる口径２８ｍｍの弁について弁の開閉
に要する力を計算すると、例えば、ガス圧が正規の５０
０ｍｍＨ2 Ｏのガスを、口径２８ｍｍの弁で開閉する電
磁弁では、弁閉状態で弁の背面に、約３００ｇの背圧が
作用するので、このような弁は弁押えのスプリング力１
００ｇを加え、約４００ｇの押圧力で弁座と弁体を密着
させてガスの漏洩を防止していることになる。2. Description of the Related Art Conventionally, as a gas appliance for city gas or the like and other valves for automatic opening / closing control, a small solenoid valve operated by using a dry battery or the like has been used. When calculating the force required to open and close a valve having a diameter of 28 mm used at the end of a user of a pipe such as city gas, for example, the gas pressure becomes 50
In a solenoid valve that opens and closes a gas of 0 mmH 2 O with a valve having a diameter of 28 mm, a back pressure of about 300 g acts on the back surface of the valve when the valve is closed.
By adding 00 g, the valve seat and the valve body are brought into close contact with a pressing force of about 400 g, thereby preventing gas leakage.
【０００３】しかし、何等かの原因でガス圧が２０ｍｍ
Ｈ2 Ｏ程度（弁に作用する押圧力約２０ｇ）に変化した
場合には、弁座と弁体の密着力がスプリング力１００ｇ
と背圧による押圧力２０ｇとの合計１２０ｇに低下し、
弁座と弁体の密着が不完全となりガスが漏洩する危険性
があった。この場合、スプリング力を３００ｇ程度に強
化しておけばガスの漏洩は防止できるが、逆にガス圧が
正規の５００ｍｍＨ2 Ｏに回復した場合には、上述の約
３００ｇの背圧と３００ｇのスプリング力の合計６００
ｇとなり、すなわち、使用する電磁石は、初期引上力が
６００ｇ、ストロークが６ｍｍ程度の大型なものになら
ざるを得ないという問題があった。However, for some reason, the gas pressure is 20 mm.
When the pressure changes to about H 2 O (approximately 20 g of pressing force acting on the valve), the contact force between the valve seat and the valve element becomes 100 g of spring force.
And the pressing force due to the back pressure of 20 g to a total of 120 g,
There was a risk that gas would leak due to incomplete contact between the valve seat and the valve element. In this case, leakage of gas can be prevented by increasing the spring force to about 300 g. On the contrary, when the gas pressure is restored to the regular 500 mmH 2 O, the above-mentioned back pressure of about 300 g and the spring pressure of 300 g are used. Total power 600
g, that is, the electromagnet to be used has a problem that the initial pulling force has to be 600 g and the stroke has to be as large as about 6 mm.
【０００４】[0004]
【発明が解決しようとする課題】図５に従来例の断面の
説明図を示す。弁体１は略同一径の弁体の押え具５と重
ねて弁棒３に装着され、内径Ｄの弁座２に接離すること
により弁を開状態或は閉状態として流体の流れが制御さ
れる。しかし、図３に示すような従来技術の弁において
は、上述のように弁体と弁座の押圧力（背圧とスプリン
グ力の合計）が約１００ｇに低下する恐れがありガス漏
洩の危険性があった。FIG. 5 is an explanatory view of a cross section of a conventional example. The valve body 1 is mounted on the valve stem 3 so as to overlap with the holding member 5 of a valve body having substantially the same diameter. Is done. However, in the prior art valve as shown in FIG. 3, as described above, the pressing force (the sum of the back pressure and the spring force) of the valve body and the valve seat may be reduced to about 100 g, and there is a risk of gas leakage. was there.
【０００５】本発明は、背圧が２０ｍｍＨ2 Ｏ程度（約
２０ｇ）に低下しても、スプリング力６０ｇ、すなわ
ち、弁座と弁体の押圧力が８０ｇ程度となってもガスの
漏洩がなく、しかも電磁弁に適用すれば乾電池等の微少
電源容量でも駆動できる微差圧用弁を提供することを課
題とするものである。According to the present invention, even if the back pressure is reduced to about 20 mmH 2 O (about 20 g), even if the spring force is 60 g, that is, the pressing force between the valve seat and the valve body is about 80 g, there is no gas leakage. Another object of the present invention is to provide a valve for small differential pressure which can be driven by a small power supply capacity such as a dry battery when applied to an electromagnetic valve.
【０００６】[0006]
【課題を解決するための手段】本発明は、弾性を有する
弁体と、弁体の上面を直接押圧し弁開口より小径の外径
を有する押圧部と、押圧部の上面を押圧する円板状の弁
体押え具と、弁体押え具の上面と弁棒の鍔間に設けら
れ、弁棒に外嵌する弾性体とから成り、前記押圧部の内
径側にリング状空間を設けたことを特徴とする微差圧用
弁である。SUMMARY OF THE INVENTION The present invention has an elasticity.
The outer diameter is smaller than the valve opening by directly pressing the valve body and the upper surface of the valve body
And a disc-shaped valve for pressing the upper surface of the pressing portion
Body retainer, and between the upper surface of the valve body retainer and the flange of the valve stem.
And an elastic body that is fitted to the valve stem.
A minute differential pressure valve, wherein a ring-shaped space is provided on the radial side.
【０００７】[0007]
【０００８】[0008]
【作用】本発明は、弁棒３をスプリングで押圧したと
き、弁体１は弁座２との接触部で少しく撓み、小さい押
圧力で大きなシール効果を発生するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention, when pressing the valve stem 3 by the spring, the valve body 1 Sukoshiku bending at the contact portion with the valve seat 2, is to generate a large sealing effect with a small pressing force.
【０００９】[0009]
【００１０】また、弁体を弁棒に対して微少揺動可能と
したために、弁体１を弁棒３に取付る際の弁棒３の機械
加工寸法誤差、弁座２の機械加工寸法誤差が吸収される
ので、部品を精密加工しなくても弁体１と弁座２間のシ
ール効果を維持することができる。In addition , since the valve body can be slightly swung with respect to the valve stem, a machining dimensional error of the valve stem 3 and a machining dimensional error of the valve seat 2 when the valve body 1 is mounted on the valve stem 3. Therefore, the sealing effect between the valve body 1 and the valve seat 2 can be maintained without precision machining of the parts.
【００１１】[0011]
【００１２】[0012]
【００１３】[0013]
【００１４】図１は本発明の実施例の断面の説明図であ
る。弁体押え具５と弁棒３との間に弾性体リング６を設
け、さらに弁棒３の周囲の押圧部４にリング状空間７を
設けたものである。このため、弁体１は弁棒３に対して
微少揺動可能となり、弁棒３、弁座２等の機械加工寸法
誤差が吸収されることになる。一般の弁、開閉蓋等の各
種係合部にこの実施例を適用すれば上述と同様の作用効
果を得ることが可能であるが、例えば、図２のようにも
使用することができる。[0014] Figure 1 is a schematic cross sectional view of the actual施例of the present invention. The elastic ring 6 provided between the valve Karadaosae member 5 and valve stem 3, in which further provided with a ring-shaped space 7 the pressing portion 4 around the valve stem 3. For this reason, the valve element 1 can be slightly swung with respect to the valve rod 3, and the dimensional error in machining of the valve rod 3, the valve seat 2, and the like is absorbed. Generally the valve, but the various engagement portions such as opening and closing the lid it is possible to obtain the same effect as described above by applying the real施例this, for example, can be used as shown in FIG. 2 .
【００１５】本発明者等はさきに、特願平２−３１１６
２５号で『微少力によって作動する弁』を提案している
が、図２のように本発明を適用することにより、上述の
作用効果の外微少力によって作動させることもできる。
図２は本発明の実施例を組込んだ電磁弁の縦断面図を示
した参考例である。図２の微差圧用弁は、図１の弁体１
と押圧部４を一体に形成した弁体１ａ、押え具５、弾性
体リング６、弁体１ａに設けたリング状空間７、弁棒
３、弁座２等から構成されている。さらに、弁棒３の下
部には一端に凸部９を備えた押上部材８を設けている。The inventors of the present invention have previously disclosed Japanese Patent Application No. 2-3116.
No. 25 proposes a "valve operated by a very small force". However, by applying the present invention as shown in FIG. 2 , the valve can be operated by a very small force outside the above-mentioned effects.
Figure 2 is a reference example in which a longitudinal sectional view of incorporating solenoid valve actual施例of the present invention. Fine differential pressure valve of Figure 2, the valve body 1 of FIG. 1
And a pressing portion 4 are integrally formed, a valve body 1a, a holding member 5, an elastic ring 6, a ring-shaped space 7 provided in the valve body 1a, a valve rod 3, a valve seat 2, and the like. Further, a push-up member 8 having a protrusion 9 at one end is provided at a lower portion of the valve stem 3.
【００１６】弁棒３は電磁アクチュエータ１０によって
作動される。電磁アクチュエータ１０は、固定鉄心１
１、可動鉄心１２、ばね１５、ばね１６、電磁コイル１
７、永久磁石１８を有する二連式アクチュエータであ
り、電磁コイル１７が励磁されていない時、弁座２は弁
棒３によって弁体押え具５および弁体１ａを介して押圧
され、弁の内外間をシールしている。この場合、弾性体
リング６およびリング状空間７の作用によってこのシー
ルをより完全なものとしている。The valve stem 3 is operated by an electromagnetic actuator 10. The electromagnetic actuator 10 includes the fixed core 1
1, movable iron core 12, spring 15, spring 16, electromagnetic coil 1
7, a dual actuator having a permanent magnet 18, and when the electromagnetic coil 17 is not excited, the valve seat 2 is pressed by the valve rod 3 via the valve body presser 5 and the valve body 1a, and the inside and outside of the valve The space between them is sealed. In this case, the seal is made more complete by the action of the elastic ring 6 and the ring-shaped space 7.
【００１７】電磁アクチュエータ１０によって弁開する
とき、まず弱い吸引力でばね１５に抗して弁棒３を僅か
に引上げると、押上部材８の凸部９が弁体１ａの一端を
押上げるので、弁の内外圧差は０となる。弁の内外圧差
がなくなったとき、強い吸引力でばね１６に抗して弁体
１全体を上昇させる。この二段モーションによって、弁
閉の状態で弁体に作用する背圧を、弁開動作当初に速や
かに低減することができるので電磁アクチュエータ１０
を小型化することが可能となる。また、電磁アクチュエ
ータ１０を駆動する電源乾電池を長寿命化することがで
きる。When the valve is opened by the electromagnetic actuator 10, when the valve rod 3 is slightly pulled up against the spring 15 with a weak suction force, the convex portion 9 of the push-up member 8 pushes up one end of the valve body 1a. , The pressure difference between the inside and outside of the valve becomes zero. When the pressure difference between the inside and outside of the valve disappears, the entire valve body 1 is raised against the spring 16 with a strong suction force. By this two-stage motion, the back pressure acting on the valve body in the valve closed state can be rapidly reduced at the beginning of the valve opening operation.
Can be reduced in size. In addition, the life of the power supply battery that drives the electromagnetic actuator 10 can be extended.
【００１８】[0018]
【発明の効果】本発明は、弁の入出口における差圧が微
少であっても流体の漏洩がなく確実に作動することがで
きる。また、弁棒、弁座等の機械加工寸法誤差が吸収さ
れるので、それら部品の精密加工の必要はなく、安価な
部品による大量生産が可能となり、生産性の向上を図る
ことができる。According to the present invention, even if the differential pressure at the inlet and outlet of the valve is very small, it can be reliably operated without leakage of fluid. In addition, since dimensional errors in machining of a valve stem, a valve seat, and the like are absorbed, there is no need for precision machining of these components, mass production of inexpensive components becomes possible, and productivity can be improved.
【図１】本発明の実施例の断面の説明図である。 FIG. 1 is an explanatory diagram of a cross section of an embodiment of the present invention.
【図２】本発明の実施例を組込んだ電磁弁の縦断面図で
ある。 FIG. 2 is a longitudinal sectional view of a solenoid valve incorporating an embodiment of the present invention.
is there.
【図３】従来例の断面の説明図である。 FIG. 3 is an explanatory view of a cross section of a conventional example.
１、１ａ 弁体 ２ 弁座 ３ 弁棒 ４ 押圧部 ５ 弁体押え具 ６ 弾性体リング ７ リング状空間 Ｄ 弁座の内径 ｄ 押圧部径 DESCRIPTION OF SYMBOLS 1, 1a Valve body 2 Valve seat 3 Valve rod 4 Pressing part 5 Valve body retainer 6 Elastic ring 7 Ring-shaped space D Inner diameter of valve seat d Pressing part diameter
Claims (1)
の上面を直接押圧し弁開口（Ｄ）より小径の外径（ｄ）
を有する押圧部（４）と、押圧部（４）の上面を押圧す
る円板状の弁体押え具（５）と、弁体押え具（５）の上
面と弁棒（３）の鍔（３ａ）間に設けられ、弁棒（３）
に外嵌する弾性体（６）とから成り、前記押圧部（４）
の内径側にリング状空間（７）を設けたことを特徴とす
る微差圧用弁。1. A valve body (1) having elasticity, and a valve body (1).
The outer diameter (d) is smaller than the valve opening (D) by directly pressing the upper surface of the
A pressing portion (4) having a flange of the pressing portion (4) top disc-shaped valve element retainer for pressing the with (5), top and valve stem (3) of the valve retainer (5) ( 3a) between the valve stem (3)
An elastic body (6) externally fitted on the pressing portion (4).
A valve for minute differential pressure, wherein a ring-shaped space (7) is provided on the inner diameter side of the valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11745792A JP2638383B2 (en) | 1991-10-23 | 1992-05-11 | Valve for differential pressure |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3-275256 | 1991-10-23 | ||
| JP27525691 | 1991-10-23 | ||
| JP11745792A JP2638383B2 (en) | 1991-10-23 | 1992-05-11 | Valve for differential pressure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05172255A JPH05172255A (en) | 1993-07-09 |
| JP2638383B2 true JP2638383B2 (en) | 1997-08-06 |
Family
ID=26455565
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11745792A Expired - Fee Related JP2638383B2 (en) | 1991-10-23 | 1992-05-11 | Valve for differential pressure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2638383B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5768238B2 (en) * | 2011-10-20 | 2015-08-26 | 株式会社テージーケー | Check valve and compound valve |
| JP6339952B2 (en) * | 2015-03-10 | 2018-06-06 | 本田技研工業株式会社 | PCV valve and PCV passage provided with the PCV valve |
| JP6493060B2 (en) * | 2015-07-23 | 2019-04-03 | トヨタ紡織株式会社 | PCV valve |
-
1992
- 1992-05-11 JP JP11745792A patent/JP2638383B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH05172255A (en) | 1993-07-09 |
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