JP3276124B2 - Flow control valve - Google Patents
Flow control valveInfo
- Publication number
- JP3276124B2 JP3276124B2 JP34010993A JP34010993A JP3276124B2 JP 3276124 B2 JP3276124 B2 JP 3276124B2 JP 34010993 A JP34010993 A JP 34010993A JP 34010993 A JP34010993 A JP 34010993A JP 3276124 B2 JP3276124 B2 JP 3276124B2
- Authority
- JP
- Japan
- Prior art keywords
- valve
- flow control
- body case
- valve seat
- control valve
- 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
Landscapes
- Magnetically Actuated Valves (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、流量制御弁に関し、よ
り詳細には弁体に当接する弁シートの取付けに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flow control valve, and more particularly to mounting a valve seat abutting a valve body.
【０００２】[0002]
【従来の技術】従来の比例電磁弁の構造は、流体の入口
と出口を形成の本体ケースに弁シートを形成し、該弁シ
ートと当接の弁体との隙間でもって、流量制御を行って
いる。又、これらの比例電磁弁は、より広い流量範囲を
安定して制御することが望まれ、特に、周辺機器の高精
度化に伴い、最小流量性能の精度向上が望まれている。
そこで、比例電磁弁は、弁体及び弁体と当接する弁シー
トをミクロンオーダーの精度で加工し、組み立てられて
いる。2. Description of the Related Art A conventional proportional solenoid valve has a structure in which a valve seat is formed in a main body case forming an inlet and an outlet of a fluid, and a flow rate is controlled by a gap between the valve seat and a contacting valve body. ing. In addition, it is desired that these proportional solenoid valves stably control a wider flow rate range. In particular, with the increase in the precision of peripheral devices, it is desired to improve the accuracy of the minimum flow rate performance.
Therefore, the proportional solenoid valve is assembled by processing a valve body and a valve sheet that comes into contact with the valve body with an accuracy of micron order.
【０００３】[0003]
【発明が解決しようとする課題】前記のように高精度に
加工された弁体及び弁シートで組み立てられた比例電磁
弁は、工場検査時には要求精度を満たしている。しかし
ながら、この電磁弁を他の機器と接続するとき、本体ケ
ースに形成の流体入口と出口を、ネジ或はフランジ等の
継手を介して行われる。この時、本体ケースに歪みが生
じるため、本体ケースに形成の弁シートも同様に歪み、
その結果、特に、最小流量性能の劣化を招来している。
そこで、本発明は、本体ケースからの応力等の影響を軽
減可能とし、最小流量性能の向上を図ることができる比
例電磁弁を提供するものである。The proportional solenoid valve assembled with the valve body and the valve seat processed with high precision as described above satisfies the required accuracy at the time of factory inspection. However, when this solenoid valve is connected to another device, the fluid inlet and outlet formed in the main body case are made through a joint such as a screw or a flange. At this time, since the main body case is distorted, the valve sheet formed on the main body case is similarly distorted,
As a result, particularly, the minimum flow rate performance is deteriorated.
Therefore, the present invention provides a proportional solenoid valve capable of reducing the influence of stress or the like from the main body case and improving the minimum flow rate performance.
【０００４】[0004]
【課題を解決するための手段】請求項１の流量制御弁
は、流体の入口２と出口３を形成の本体ケース１内にホ
ルダ１１を介して往復動する弁体８と、その弁体８に当
接可能な弁座部５ａを形成の弁シート５を前記本体ケー
ス１内に取り付けてある。そして、ホルダ１１の下部に
補助ホルダ１２を配設し、それらの間に、弁シート５の
上端部５ｂを嵌挿して構成してある。又、請求項２の流
量制御弁は、補助ホルダ１２はシートパッキン３２を介
して、弁シート５の下部ではパッキン３１を介して取り
付ける構成である。請求項３の流量制御弁は、弾性体１
８を介して弁体８が弁座部５ａに当接状態にしてある。According to a first aspect of the present invention, there is provided a flow control valve comprising: a valve body reciprocating via a holder in a body case having a fluid inlet and an outlet; A valve seat 5 forming a valve seat portion 5a capable of abutting on the main body case 1 is mounted in the main body case 1. An auxiliary holder 12 is provided below the holder 11, and the upper end 5b of the valve seat 5 is inserted between them. Further, the flow control valve according to the second aspect is configured such that the auxiliary holder 12 is attached via the seat packing 32 and the lower part of the valve seat 5 is attached via the packing 31. The flow control valve according to claim 3 is an elastic body 1
The valve body 8 is in contact with the valve seat 5a via the valve body 8.
【０００５】[0005]
【作用】請求項１の流量制御弁は、弁シート５の上端部
５ｂがホルダ１１と補助ホルダ１２に嵌挿して構成して
あるので、弁シート５は本体ケース１に対して揺動可能
に、即ち、本体ケース１に生ずる歪の影響を減少させる
ので、流量の精度向上を図ることができる。又、請求項
２の流量制御弁は、補助ホルダ１２はシートパッキン３
２を介して、弁シート５の下部ではパッキン３１を介し
て取り付ける構成によって、弁シート５は、シートパッ
キン３２とパッキン３１によって、本体ケース１に生ず
る歪の影響を減少させるので、流量の精度向上を図るこ
とができる。請求項３の流量制御弁は、弾性体１８によ
って、常時、弁体８が弁座部５ａに当接して閉状態であ
る。According to the flow control valve of the first aspect, since the upper end portion 5b of the valve seat 5 is inserted into the holder 11 and the auxiliary holder 12, the valve seat 5 can swing with respect to the main body case 1. That is, since the influence of the distortion generated in the main body case 1 is reduced, the accuracy of the flow rate can be improved. Further, in the flow control valve according to the second aspect, the auxiliary holder 12 is provided with the seat packing 3.
2, the valve seat 5 is attached to the lower portion of the valve seat 5 via the packing 31, so that the seat packing 32 and the packing 31 reduce the influence of distortion generated in the main body case 1, thereby improving the accuracy of the flow rate. Can be achieved. In the flow control valve according to the third aspect, the valve body 8 is always in contact with the valve seat portion 5a by the elastic body 18 and is in a closed state.
【０００６】[0006]
【実施例】本発明の流量制御弁として比例電磁弁の実施
例を断面を示す図１を参照して説明する。１はアルミダ
イカスト等で製作される本体ケース１であって、流体入
口２及び流体出口３が連通形成され、上部にフレーム２
５等に連結構成される弁体８、弁シート５等を内装可能
の開口１ａが形成してある。１２はＬ字型の補助ホルダ
であって、環状のシートパッキン３２を介して、前記開
口１ａに載置してある。１４は、外周縁に係止部１４ａ
を形成した円盤型のダイヤフラムであって、内周縁はロ
ッド９に嵌挿のダイヤフラム座金１５と弾性受体１６と
でプッシュナット１７を介して固定され、一方、外周縁
に形成の係止部１４ａはホルダ１１と補助ホルダ１２に
挿入されて、上部への漏洩を防止している。５は弁シー
トであって、アルミニュームや真鍮等の非磁性体の板を
プレス加工等で断面Ｓ字状に形成され、下先端部が弁座
部５ａとなっている。この弁シート５の上端部５ｂは、
前記ダイアフラム１４の係止部１４ａの内側に、ホルダ
１１と補助ホルダ１２に嵌挿してある一方、下部はＶ字
型パッキン３１に載置されている。そのため、弁シート
５は、所謂、揺動可能となっていると共に、本体ケース
１と別体で形成され、本体ケース１とはＶ字型のパッキ
ン３１とシートパッキン３２を介して接触した状態であ
る。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a proportional solenoid valve as a flow control valve of the present invention will be described with reference to FIG. Reference numeral 1 denotes a main body case 1 made of aluminum die casting or the like.
An opening 1a is formed in which the valve body 8, the valve seat 5 and the like, which are connected to the valve member 5 and the like, can be housed. Reference numeral 12 denotes an L-shaped auxiliary holder, which is placed in the opening 1a via an annular sheet packing 32. 14 is a locking portion 14a on the outer peripheral edge.
The inner peripheral edge is fixed via a push nut 17 with a diaphragm washer 15 inserted into the rod 9 and an elastic receiver 16, while a locking portion 14 a formed on the outer peripheral edge Are inserted into the holder 11 and the auxiliary holder 12 to prevent leakage to the upper part. Reference numeral 5 denotes a valve seat, which is formed by pressing a nonmagnetic plate such as aluminum or brass into a S-shaped cross section by press working or the like, and has a lower end portion serving as a valve seat portion 5a. The upper end 5b of the valve seat 5 is
The holder 14 and the auxiliary holder 12 are fitted inside the locking portion 14 a of the diaphragm 14, while the lower portion is placed on a V-shaped packing 31. Therefore, the valve seat 5 is so-called swingable and is formed separately from the main body case 1, and is in contact with the main body case 1 via the V-shaped packing 31 and the seat packing 32. is there.
【０００７】金属製の弁体８は、弁座部５ａに当接する
外周縁が傾斜状に形成してあり、ロッド９を介してプラ
ンジャ１０に連結されていて往復動する。尚、ロッド９
には弾性受体１６が取着され、弁シート５の曲折した下
隅部５ｃとの間に弾性体１８が嵌挿されていて、常時、
弁体８を上方向に付勢し、弁座部５ａと当接して、閉状
態としている。２０は円筒状のボビン２１に捲かれたコ
イルであって、薄肉円筒のガイド体２２を介して、前記
プランジャ１０を内挿し、フレーム２５とフレーム２５
下部に固定のホルダ１１で固着してある。２７は調圧棒
であって、前記プランジャ１０の上部に形成のくぼみ１
０ａに調圧弾性体２８を嵌挿して構成し、調圧棒２７を
廻すことで、調圧弾性体２８が伸縮され、プランジャ１
０の下方向への付勢力を調整可能としている。２６は、
前記フレーム２５上に取り付けられるキャップである。The metal valve element 8 has a slanted outer peripheral edge in contact with the valve seat 5a, and is connected to a plunger 10 via a rod 9 to reciprocate. The rod 9
An elastic receiving member 16 is attached to the elastic member 18, and an elastic member 18 is inserted between the elastic receiving member 16 and the bent lower corner 5 c of the valve seat 5.
The valve body 8 is urged upward to come into contact with the valve seat portion 5a to be in a closed state. Reference numeral 20 denotes a coil wound around a cylindrical bobbin 21. The plunger 10 is inserted through a thin-cylindrical guide body 22 to form a frame 25 and a frame 25.
The lower part is fixed by a fixed holder 11. Reference numeral 27 denotes a pressure regulating rod, which is a recess 1 formed on the upper part of the plunger 10.
The pressure adjusting elastic body 28 is inserted into the plunger 1a by rotating the pressure adjusting rod 27.
The downward biasing force of 0 is adjustable. 26 is
The cap is mounted on the frame 25.
【０００８】前記構成の比例電磁弁は、コイル２０が通
電しない状態のときには、弾性体１８によって、弁体８
は上方向に付勢されて、弁座部５ａと弁体８の傾斜部が
当接して閉状態となる。一方、コイル２０に所定電流を
流すと、電磁石として作用して、プランジャ１０は前記
弾性体１８の弾発力に打ち勝って、下方向に移動し、弁
体８の傾斜部と弁座部５ａとに隙間を生じて、流体入口
２からの流体は、該隙間を通って、流体の出口３へ流出
し、コイル２０の電流値によって前記隙間を増減させて
流量調整を行う。In the proportional solenoid valve having the above structure, when the coil 20 is not energized, the elastic body 18 causes the valve 8
Is urged upward, and the valve seat portion 5a and the inclined portion of the valve body 8 come into contact with each other to be closed. On the other hand, when a predetermined current is applied to the coil 20, the plunger 10 acts as an electromagnet, overcomes the elastic force of the elastic body 18, moves downward, and the inclined portion of the valve body 8 and the valve seat 5a The fluid from the fluid inlet 2 flows out to the fluid outlet 3 through the gap, and the flow rate is adjusted by increasing or decreasing the gap by the current value of the coil 20.
【０００９】この比例電磁弁を他の機器等に接続する場
合、流体入口２と流体出口３とを、例えば、図１に示す
ネジ接続管３０にシールテープ等を介して接続する。こ
の時、ネジ接続管３０の回動によって、本体ケース１が
歪むが、弁シート５は、本体ケース１とはＶ字型のパッ
キン３１とシートパッキン３２を介して接触した状態に
取着してあるため、かかる歪みの影響が軽減される。こ
の結果、従来の比例電磁弁が、本体ケースの歪みが弁シ
ートを歪ませて、特に、最小流量精度の劣化を招来して
いるのと異なり、前記した様に、本発明の比例電磁弁の
本体ケース１の歪みは、弁シート５に影響を与えず、工
場で組み立て後の検査とほぼ同じ精度を維持することが
でき、特に、最小流量の精度向上を図ることができる。When the proportional solenoid valve is connected to another device or the like, the fluid inlet 2 and the fluid outlet 3 are connected to, for example, a screw connection pipe 30 shown in FIG. 1 via a seal tape or the like. At this time, the body case 1 is distorted by the rotation of the screw connection pipe 30, but the valve seat 5 is attached to the body case 1 in a state of being in contact with the body case 1 via the V-shaped packing 31 and the seat packing 32. Therefore, the influence of such distortion is reduced. As a result, the conventional proportional solenoid valve differs from the proportional solenoid valve of the present invention in that the distortion of the main body case distorts the valve seat, in particular, causing the deterioration of the minimum flow rate accuracy. The distortion of the main body case 1 does not affect the valve seat 5, and can maintain almost the same accuracy as the inspection after assembly at the factory. In particular, the accuracy of the minimum flow rate can be improved.
【００１０】[0010]
【発明の効果】本発明の請求項１の流量制御弁における
弁シートは、本体ケースに対して揺動可能に取り付けて
あるので、他の機器に接続する際に発生する本体ケース
の歪みの影響が軽減される。そのため、流量制御弁は他
の機器と接続しても、工場検査時とほぼ同精度での流量
制御が可能となる。又、請求項２の流量制御弁における
弁シートは、シートパッキンとパッキンによって、本体
ケースに生ずる歪の影響を減少させるので、流量の精度
向上を図ることができる。請求項３の流量制御弁は、弾
性体によって、常時は閉状態を維持できる。 According to the flow control valve of the first aspect of the present invention,
The valve seat is pivotally attached to the body case
There is a body case that occurs when connecting to other devices
The effect of the distortion of is reduced. Therefore, the flow control valve
Flow rate with almost the same accuracy as factory inspection
Control becomes possible. Further, in the flow control valve according to claim 2,
The valve seat is made up of the main body by seat packing and packing.
Accuracy of flow rate as it reduces the effect of distortion in the case
Improvement can be achieved. The flow control valve according to claim 3 is a
The closed state can be always maintained by the sexual body.
【図１】比例電磁弁の断面を示す図である。FIG. 1 is a diagram showing a cross section of a proportional solenoid valve.
【符号の説明】 １ 本体ケース ２ 流体入口 ３ 流体出口 ５ 弁シート ５ａ 弁座部 ５ｂ 弁シートの上端部 ５ｃ 弁シートの下隅部 ８ 弁体 ９ ロッド １０ プランジャ １１ ホルダ １２ 補助ホルダ １６ 弾性受体 １８ 弾性体 ２０ コイル ２５ フレーム ３０ ネジ接続管DESCRIPTION OF SYMBOLS 1 Body case 2 Fluid inlet 3 Fluid outlet 5 Valve seat 5a Valve seat 5b Upper end of valve seat 5c Lower corner of valve seat 8 Valve body 9 Rod 10 Plunger 11 Holder 12 Auxiliary holder 16 Elastic receiver 18 Elastic body 20 Coil 25 Frame 30 Screw connection pipe
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭61−99781（ＪＰ，Ａ) 実開 昭49−135820（ＪＰ，Ｕ) 実開 昭58−28176（ＪＰ，Ｕ) 実開 平４−73666（ＪＰ，Ｕ) 特公 昭44−9414（ＪＰ，Ｂ１) 実公 昭44−15479（ＪＰ，Ｙ１) (58)調査した分野(Int.Cl.7，ＤＢ名) F16K 31/06 - 31/11 F16K 27/00 - 27/12 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-61-99781 (JP, A) JP-A-49-135820 (JP, U) JP-A-58-28176 (JP, U) 73666 (JP, U) Japanese Patent Publication No. 44-9414 (JP, B1) Japanese Utility Model Publication No. 44-15479 (JP, Y1) (58) Fields investigated (Int. Cl. 7 , DB name) F16K 31/06-31 / 11 F16K 27/00-27/12
Claims (3)
ス１の上にホルダ１１を設けると共に前記本体ケース１
内に往復動する弁体８を設けてなる流量制御弁であっ
て、 前記本体ケース１内に前記弁体８に当接可能な弁座部５
ａを形成の弁シート５を設け、 前記ホルダ１１の下部で前記本体ケース１に形成の開口
１ａに補助ホルダ１２を載置し、 前記弁シート５の上端部５ｂを、前記ホルダ１１と前記
補助ホルダ１２との間に嵌挿することを特徴とする流量
制御弁。1. A holder (11) is provided on a main body case (1) having a fluid inlet (2) and a fluid outlet (3).
A flow control valve having a valve element 8 reciprocating therein, wherein a valve seat portion 5 capable of contacting the valve element 8 in the main body case 1.
The auxiliary seat 12 is placed in the opening 1a formed in the main body case 1 below the holder 11, and the upper end 5b of the valve seat 5 is connected to the holder 11 and the auxiliary. A flow control valve which is inserted between the holder and the flow control valve.
介して本体ケース１の開口１ａに取り付け、弁シート５
の下部はパッキン３１を介して本体ケース１に取り付け
ることを特徴とする請求項１の流量制御弁。2. The auxiliary holder 12 is attached to the opening 1a of the main body case 1 via a seat packing 32,
2. The flow control valve according to claim 1, wherein a lower portion of the valve is attached to the main body case 1 via a packing.
ａに当接状態であることを特徴とする請求項１又は請求
項２の流量制御弁。3. The valve body 8 is connected to the valve seat 5 via an elastic body 18.
The flow control valve according to claim 1, wherein the flow control valve is in a contact state with a.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34010993A JP3276124B2 (en) | 1993-12-06 | 1993-12-06 | Flow control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34010993A JP3276124B2 (en) | 1993-12-06 | 1993-12-06 | Flow control valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07158762A JPH07158762A (en) | 1995-06-20 |
| JP3276124B2 true JP3276124B2 (en) | 2002-04-22 |
Family
ID=18333811
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP34010993A Expired - Lifetime JP3276124B2 (en) | 1993-12-06 | 1993-12-06 | Flow control valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3276124B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4516011B2 (en) * | 2005-12-16 | 2010-08-04 | リンナイ株式会社 | Gas proportional valve |
| JP2008138721A (en) * | 2006-11-30 | 2008-06-19 | Kurashiki Kako Co Ltd | Gas-pressure servo-valve |
-
1993
- 1993-12-06 JP JP34010993A patent/JP3276124B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07158762A (en) | 1995-06-20 |
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