JPH04107373A - Water feed valve - Google Patents
Water feed valveInfo
- Publication number
- JPH04107373A JPH04107373A JP22534890A JP22534890A JPH04107373A JP H04107373 A JPH04107373 A JP H04107373A JP 22534890 A JP22534890 A JP 22534890A JP 22534890 A JP22534890 A JP 22534890A JP H04107373 A JPH04107373 A JP H04107373A
- Authority
- JP
- Japan
- Prior art keywords
- water
- valve
- pressure
- diaphragm valve
- inlet hole
- 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.)
- Pending
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 46
- 239000011347 resin Substances 0.000 claims description 5
- 229920005989 resin Polymers 0.000 claims description 5
- 239000012530 fluid Substances 0.000 claims description 3
- 238000002347 injection Methods 0.000 abstract description 7
- 239000007924 injection Substances 0.000 abstract description 7
- 239000008400 supply water Substances 0.000 abstract 1
- 238000011144 upstream manufacturing Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Landscapes
- Details Of Valves (AREA)
- Fluid-Driven Valves (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明はパイロット弁により制御された制御圧力で作動
するダイアフラム弁に係り、特に、水撃作用を軽減する
のに好適な給水弁に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a diaphragm valve that operates under a control pressure controlled by a pilot valve, and particularly to a water supply valve suitable for reducing water hammer effects.
従来、電磁ソレノイドのプランジャに設けたパイロット
弁で制御される圧力で作動するダイアフラム弁は、特公
昭５０−１９７７４号に記載のように、環状弁座に着座
する部分と、外周のベローズ部分とパイロット弁によっ
て開閉される中心オリフィス部とを有し、更に、ダイア
フラムの一部に前記中心オリフィスより径の小さい圧力
水油入孔が設けられている。また、変形、浸食等により
中心オリフィスと抽入孔の孔径の変化を防止するため、
中心オリフィスと圧力水油入孔を有するダイアフラムの
中心部に樹脂製の挿入子が使用され、かつ、その下流部
分には案内用のリブと、弁開度縮小時に流体の流路断面
積を急緒少する円柱部分を有して、作動中のダイアフラ
ム弁の動きを案内するとともに、全開直前に流速を低下
させて水撃を軽減する構成が提案されている。Conventionally, a diaphragm valve operated by pressure controlled by a pilot valve provided on the plunger of an electromagnetic solenoid has a part that seats on an annular valve seat, a bellows part on the outer periphery, and a pilot valve, as described in Japanese Patent Publication No. 19774/1974. The diaphragm has a central orifice portion that is opened and closed by a valve, and a pressure water oil inlet hole having a smaller diameter than the central orifice is provided in a part of the diaphragm. In addition, to prevent changes in the diameter of the center orifice and injection hole due to deformation, erosion, etc.
A resin insert is used in the center of the diaphragm, which has a central orifice and a pressure water/oil inlet, and a guide rib is used downstream of the insert to sharpen the cross-sectional area of the fluid flow path when the valve opening is reduced. A configuration has been proposed in which the diaphragm valve has a cylindrical portion that reduces the flow rate to guide the movement of the diaphragm valve during operation, and reduces the flow velocity just before fully opening to reduce water hammer.
上記従来技術では、案内用リブと流路内周との間隙が小
さいための変形による影響、あるいは流路面積急縮少の
ための円柱部分と流路内周間の間隙内への異物づまりな
どの点について配慮されておらず、動作不良を起したり
、構造が複雑となる問題点を有していた。In the above conventional technology, the influence of deformation due to the small gap between the guide rib and the inner periphery of the channel, or the accumulation of foreign matter in the gap between the cylindrical part and the inner periphery of the channel due to the sudden reduction in the channel area, etc. However, this problem has not been taken into consideration, leading to problems such as malfunctions and complicated structures.
本発明の目的は、ダイアフラム弁の閉動作時、背圧室内
に流入する圧力水に抽入孔内で大きな抵抗を与えて流入
量を制限し、これによりダイアフラム弁の閉鎖時間を長
くして水撃作用を軽減しようとしたものである。An object of the present invention is to limit the amount of pressure water flowing into the back pressure chamber by applying a large resistance within the inlet hole when the diaphragm valve closes, and thereby prolonging the closing time of the diaphragm valve to prevent water from flowing into the back pressure chamber. This was an attempt to reduce the impact force.
上記目的を達成するためには、背圧室と流路とを分ける
ダイアフラム弁の圧力水油入孔内に、同孔径より僅かに
小径の線材を挿入し、かつ、同線材の背圧室側にツバ部
を設けて抽入孔出口部との間にバネを介在させ、本体に
組込んだとき常に上記ツバ部が抽入孔出口部と対向する
本体側壁面を押圧するような構成としたものである。In order to achieve the above purpose, a wire rod with a diameter slightly smaller than the diameter of the hole is inserted into the pressure water oil inlet hole of the diaphragm valve that separates the back pressure chamber and the flow path, and the wire rod is placed on the back pressure chamber side. A spring is interposed between the collar and the outlet of the injection hole, so that when assembled into the main body, the collar always presses against the side wall of the main body facing the outlet of the injection hole. It is something.
すなわち、パイロット弁の開成時には、流路内の圧力水
の一部は背圧室と連通し、かつ、線材が挿入された抽入
孔内の狭い流路を経由して大きな流通抵抗を受けながら
背圧室に入り、更にダイアフラム弁の中心オリフィスを
経て下流側に流出する。In other words, when the pilot valve is opened, a portion of the pressurized water in the flow path communicates with the back pressure chamber and passes through the narrow flow path in the inlet hole into which the wire is inserted, while experiencing large flow resistance. It enters the back pressure chamber and exits downstream through the central orifice of the diaphragm valve.
この時、中心オリフィスの流路断面は抽入孔より大きく
設定されていて、水の流通抵抗が線材を挿入した抽入孔
より極端に小さいため、同背圧室内の圧力は下流側とほ
ぼ等しくなって主流路側より低い値となり、ダイアフラ
ム弁は上方に押し上げられて開成の状態を維持する。ま
た、このダイアフラム弁開動作時、線材のツバ部と抽入
孔出口部との間に介在するバネは圧縮されるから、抽入
孔内壁面と線材とは相対的な動きを得ることになり、抽
入孔に万一進入した水アカや異物は上流側に押し出され
る。この状態で流水は同ダイアフラム弁と弁座との間を
経て下流の吐出口より連続的に流出する。At this time, the flow path cross section of the central orifice is set larger than the injection hole, and the water flow resistance is extremely smaller than that of the injection hole into which the wire is inserted, so the pressure inside the back pressure chamber is almost equal to that on the downstream side. As a result, the value becomes lower than that on the main flow path side, and the diaphragm valve is pushed upward to maintain the open state. Also, when the diaphragm valve opens, the spring interposed between the collar of the wire and the outlet of the insertion hole is compressed, so the inner wall of the insertion hole and the wire gain relative movement. In the unlikely event that water scale or foreign matter enters the inlet hole, it will be pushed out to the upstream side. In this state, water passes between the diaphragm valve and the valve seat and continuously flows out from the downstream discharge port.
一方、パイロット弁を閉の状態にすると中心オリフィス
からの流出が停止するため、線材を挿入した抽入孔から
の圧力水は直ちに背圧室内の圧力を高めるから、ダイア
フラム弁前後の受圧面積の差によって向弁は下方に押し
下げられ、閉動作を開始する。このとき、ダイアフラム
弁の下降について背圧室の容積が拡大するため、主流路
からその拡大分に応じた水が抽入孔より補給されること
になるが、線材を挿入した抽入孔の狭い通路から供給さ
れるため、大きな流通抵抗によって補給水が制限され、
必然的にダイアフラム弁の閉鎖速度が低下して急激な弁
閉鎖が防止される。また、ダイアフラム弁の開閉毎に線
材が抽入孔内を上下に移動して自己洗浄を行うので、ゴ
ミ詰りによる問題点も同時に解消することが出来る。On the other hand, when the pilot valve is closed, the outflow from the central orifice is stopped, and the pressure water from the inlet hole into which the wire is inserted immediately increases the pressure in the back pressure chamber, resulting in a difference in the pressure receiving area before and after the diaphragm valve. The opposite valve is pushed down and starts the closing operation. At this time, the volume of the back pressure chamber expands as the diaphragm valve descends, so water is replenished from the main channel through the inlet hole in proportion to the expansion, but the inlet hole into which the wire was inserted is narrow. Because it is supplied from the passage, makeup water is limited by large flow resistance,
This necessarily reduces the closing speed of the diaphragm valve to prevent sudden valve closure. Moreover, since the wire moves up and down in the inlet hole and performs self-cleaning every time the diaphragm valve is opened and closed, problems caused by dirt clogging can be solved at the same time.
以下、本発明の一実施例を図面によって説明する。第１
図及び第２図の１はゴム等の弾性体で作られたダイアフ
ラム弁で、弁座２６に着座して水の流れを遮断する。向
弁１は更に可撓部２９と樹脂部２を保持する挾持部３０
及び３１（凸部２４で形成される）を有し、端部３２で
部品１０により本体８に固定される。樹脂部２は背圧室
２７と流路１９を連通する圧力水抽入孔３と、下方突部
３５及び上方突部３３にはそれぞれ連通孔２５゜中心オ
リフィス４を有する。１７は電磁石１３のプランジャ１
５の先端に設けたパイロット弁で、電磁石１３への通電
時にはプランジャ１５はばね１４に抗して上方に移動し
、中心オリフィス４を開成する。一方通電を○ＦＦした
場合には、ばね１４によってプランジャ１５は下方に移
動して中心オリフィス４を閉鎖する。１２はばね１４の
ストッパ兼筒部９の蓋部、１６はリード線、２８は押さ
え金具、１１は筒部９を含む部品１０と押さえ金具２８
を本体８に固定するねじで、３４はダイアフラム弁１の
上流側流路１９と連通した共通の流路である。１８はダ
イアフラム弁１の下流側流路であり、図示していない吐
出口に通ずる。An embodiment of the present invention will be described below with reference to the drawings. 1st
Reference numeral 1 in the figures and FIG. 2 is a diaphragm valve made of an elastic material such as rubber, which is seated on a valve seat 26 to block the flow of water. The facing valve 1 further includes a flexible portion 29 and a clamping portion 30 that holds the resin portion 2.
and 31 (formed by the protrusion 24) and is fixed to the body 8 by the part 10 at the end 32. The resin part 2 has a pressure water inlet hole 3 that communicates the back pressure chamber 27 and the flow path 19, and a communication hole 25° center orifice 4 in the lower protrusion 35 and the upper protrusion 33, respectively. 17 is plunger 1 of electromagnet 13
When the electromagnet 13 is energized, the plunger 15 moves upward against the spring 14 to open the center orifice 4. On the other hand, when the current is turned off, the plunger 15 is moved downward by the spring 14 to close the center orifice 4. 12 is a stopper for the spring 14 and a lid for the cylindrical portion 9; 16 is a lead wire; 28 is a holding fitting; 11 is a component 10 including the cylindrical portion 9 and the holding fitting 28
34 is a common flow path communicating with the upstream flow path 19 of the diaphragm valve 1. 18 is a downstream flow path of the diaphragm valve 1, which communicates with a discharge port (not shown).
２２はスペーサ２０で位置決めされたストレーナでゴミ
等の侵入を阻止する作用をなす。５は圧力水抽入孔３よ
りやや径の小さい線材で、上端部にはツバ部７を有し、
樹脂部２の抽入孔３出ロ部戸ツバ部７の間にばね６を有
する。２１は接続ホース等への接続ねじ、３６は洗濯機
等に取付けるフランジ部で、２３はその固定用のねじで
ある。A strainer 22 is positioned by the spacer 20 and serves to prevent dust from entering. 5 is a wire rod having a diameter slightly smaller than that of the pressure water inlet hole 3, and has a collar portion 7 at the upper end;
A spring 6 is provided between the inlet hole 3 exit portion of the resin portion 2 and the door collar portion 7. 21 is a connection screw to a connection hose, etc., 36 is a flange portion to be attached to a washing machine, etc., and 23 is a screw for fixing the same.
以上のような構成で、リード線１６を介して電磁石１３
に通電すると、プランジャ１５は上方にばね１４を圧縮
して吸引され、その先端のパイロット弁１７は中心オリ
フィス４を開成する。このため、ダイアフラム弁１の上
流側流路１９に開口している抽入孔３と線材５で形成さ
れる狭い隙間から圧力水が流入し、大きな抵抗を受けな
がら背圧室２７内に流入する。そして、開口面積の大き
い中心オリフィス４及び連通孔２５が下流側流路１８に
連通しているため、流入水は直ちに流路１８に流出する
。このため、背圧室２７内の圧力は上流側流路１９．３
４より大幅に低い値となり、圧力の差によってダイアフ
ラム弁１は上方に押し上げられて弁座２６より離れ、上
流側流路１９゜３４と下流側流路１８を連通ずる。つま
り、給水弁は「開」の状態となって、上流側から下流側
への水の移動が行われる。一方、電磁石１３への通電を
ＯＦＦするとばね１４の復元力により、プランジャ１５
は下方に移動してパイロット弁１７が中心オリフィス４
を閉鎖するから、瞬時に背圧室２７内の圧力は上流側流
路１９．３４と等しくなるが、このとき、ダイアフラム
弁１の下側中心部（弁座２６の内側）は吐出口に通じる
低圧部に面しているため、圧力が低く、受圧面積のちが
いによる力の差によってダイアフラム弁１は急速に閉動
作を開始するが、圧力水油入孔３には線材５が挿入され
ているため流路が極めて小さく、流入水は大きな抵抗を
受ける。このため、ダイアフラム弁１の閉動作に補給水
が追随しなくなって、結果的にはダイアフラム弁１の閉
鎖速度が小さくなり、水撃作用を大幅に軽減することが
出来る。また、ダイアフラム弁１の開閉毎に線材５は抽
入孔３に対して上下に動くことになり、常に孔内の水ア
カや異物を排除しながらゴミ詰りのない運転を実現する
。With the above configuration, the electromagnet 13 is connected via the lead wire 16.
When energized, the plunger 15 is drawn upward by compressing the spring 14, and the pilot valve 17 at its tip opens the central orifice 4. For this reason, pressurized water flows in through the narrow gap formed by the wire 5 and the inlet hole 3 that is open to the upstream flow path 19 of the diaphragm valve 1, and flows into the back pressure chamber 27 while encountering large resistance. . Since the central orifice 4 with a large opening area and the communication hole 25 communicate with the downstream channel 18, the inflow water immediately flows out into the channel 18. Therefore, the pressure inside the back pressure chamber 27 is reduced to the upstream flow path 19.3.
The pressure difference causes the diaphragm valve 1 to be pushed upward and away from the valve seat 26, thereby communicating the upstream passage 19° 34 with the downstream passage 18. In other words, the water supply valve is in an "open" state, and water moves from the upstream side to the downstream side. On the other hand, when the power to the electromagnet 13 is turned off, the restoring force of the spring 14 causes the plunger 15 to
moves downward and the pilot valve 17 opens the center orifice 4.
is closed, the pressure in the back pressure chamber 27 instantly becomes equal to that in the upstream flow path 19.34, but at this time, the lower center of the diaphragm valve 1 (inside the valve seat 26) communicates with the discharge port. Since it faces a low pressure area, the pressure is low, and the diaphragm valve 1 rapidly starts closing due to the difference in force due to the difference in pressure receiving area, but the wire rod 5 is inserted into the pressure water oil inlet hole 3. Therefore, the flow path is extremely small, and the inflowing water experiences great resistance. Therefore, the makeup water does not follow the closing operation of the diaphragm valve 1, and as a result, the closing speed of the diaphragm valve 1 becomes small, and the water hammer effect can be significantly reduced. Moreover, the wire rod 5 moves up and down with respect to the inlet hole 3 every time the diaphragm valve 1 is opened and closed, thereby realizing operation without clogging with dirt while constantly removing water scale and foreign matter from the hole.
本発明によれば、従来の圧力水油入孔の中に線材を挿入
して水の流路を大きく減少させるとともに、弁の開閉毎
に上記線材を動かす構成としたため、ゴミ詰りによる閉
塞を防止しながら背圧室への圧力水の流れに大きな抵抗
を与えることが出来る。このため、ダイアフラム弁の閉
鎖速度は大幅に緩和され、水撃作用に基づく圧力上昇や
騒音の発生を大きく低下させることが可能となる。According to the present invention, a wire is inserted into the conventional pressure water oil inlet hole to greatly reduce the water flow path, and the wire is moved each time the valve is opened and closed, thereby preventing blockage due to dirt clogging. However, it can provide a large resistance to the flow of pressurized water to the back pressure chamber. For this reason, the closing speed of the diaphragm valve is significantly reduced, making it possible to significantly reduce pressure rise and noise generation due to water hammer action.
第１図は本発明の一実施例の全体構成を示す縦断面図、
第２図は第１図の要部拡大図である。FIG. 1 is a longitudinal sectional view showing the overall configuration of an embodiment of the present invention;
FIG. 2 is an enlarged view of the main part of FIG. 1.
Claims (1)
る円筒状の部屋を設けるようにした弁本体と、同円筒状
の部屋内に設けた環状弁座に対向し、かつ、外周を保持
されてその背面に流体の流れ場から隔離された背圧室を
形成するとともに、同室内のパイロット弁の制御によつ
て上下動し、下降時には上記の環状弁座に着座して流体
の流れを遮断するようにしたダイヤフラム弁との組立体
において、流れ場と背圧室を連通する圧力水抽入孔内に
線材を挿入し、ダイアフラム弁開閉時に抽入孔壁面と線
材との間に相対的な往復動が得られるようにしたことを
特徴とした給水弁。 ２、請求項第１項の給水弁において、ダイアフラム弁の
一部を樹脂等の別部材で構成し、同部材に圧力水抽入孔
を設けるようにしたことを特徴とする給水弁。 ３、請求項第２項の給水弁において、線材の背圧室側に
ツバ部を設け、圧力抽入孔出口部とツバ部間にバネを介
在させて、ダイアフラム弁を本体に組込んだ際、同ツバ
部が抽入孔出口部と対向する本体壁面に押圧されるよう
構成したことを特徴とする給水弁。[Claims] 1. A valve body having an inlet and an outlet and a cylindrical chamber communicating the inlet and outlet, and an annular valve seat provided within the cylindrical chamber. A back pressure chamber is formed on the back side of the chamber, which is separated from the fluid flow field by being held at its outer periphery, and moves up and down under the control of a pilot valve within the same chamber. In the assembly with the diaphragm valve, which is seated on the diaphragm valve to block the flow of fluid, a wire is inserted into the pressure water inlet hole that communicates the flow field and the back pressure chamber, and when the diaphragm valve is opened and closed, the inlet hole wall surface A water supply valve characterized in that relative reciprocating motion is obtained between the wire and the wire. 2. The water supply valve according to claim 1, wherein a part of the diaphragm valve is made of a separate member such as resin, and a pressure water inlet hole is provided in the same member. 3. In the water supply valve of claim 2, when the diaphragm valve is assembled into the main body by providing a collar on the back pressure chamber side of the wire and interposing a spring between the pressure inlet hole outlet and the collar. A water supply valve characterized in that the collar portion is configured to be pressed against a wall surface of the main body facing the outlet portion of the inlet hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22534890A JPH04107373A (en) | 1990-08-29 | 1990-08-29 | Water feed valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22534890A JPH04107373A (en) | 1990-08-29 | 1990-08-29 | Water feed valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04107373A true JPH04107373A (en) | 1992-04-08 |
Family
ID=16827934
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22534890A Pending JPH04107373A (en) | 1990-08-29 | 1990-08-29 | Water feed valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04107373A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100734743B1 (en) * | 2006-03-16 | 2007-07-03 | 이규동 | Pilot valve |
| JP4586099B1 (en) * | 2009-07-09 | 2010-11-24 | 富士精工株式会社 | Constant flow control device |
| CN107202178A (en) * | 2017-06-15 | 2017-09-26 | 开平市亿展阀芯有限公司 | Pipeline switch valve |
-
1990
- 1990-08-29 JP JP22534890A patent/JPH04107373A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100734743B1 (en) * | 2006-03-16 | 2007-07-03 | 이규동 | Pilot valve |
| JP4586099B1 (en) * | 2009-07-09 | 2010-11-24 | 富士精工株式会社 | Constant flow control device |
| JP2011017386A (en) * | 2009-07-09 | 2011-01-27 | Fuji Seiko Kk | Constant flow rate control device |
| CN107202178A (en) * | 2017-06-15 | 2017-09-26 | 开平市亿展阀芯有限公司 | Pipeline switch valve |
| WO2018227888A1 (en) * | 2017-06-15 | 2018-12-20 | 开平市亿展阀芯有限公司 | Pipeline switch valve |
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