JPH07219642A - Constant-pressure valve for water supply - Google Patents
Constant-pressure valve for water supplyInfo
- Publication number
- JPH07219642A JPH07219642A JP6027398A JP2739894A JPH07219642A JP H07219642 A JPH07219642 A JP H07219642A JP 6027398 A JP6027398 A JP 6027398A JP 2739894 A JP2739894 A JP 2739894A JP H07219642 A JPH07219642 A JP H07219642A
- Authority
- JP
- Japan
- Prior art keywords
- valve
- valve box
- box
- pressure receiving
- receiving body
- 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.)
- Granted
Links
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、パイプ状に形成した弁
箱内に、２次側の圧力を感知して作動する受圧体を設
け、その受圧体に、２次側に押出すバネを連繋するとと
もに、１次側に向う前端側に弁箱に設けた弁座に対向す
る筒状の弁体を装設して構成する形態の水道用定圧弁に
ついての改良に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention provides a pressure receiving body for sensing and operating the pressure on the secondary side in a valve box formed in a pipe shape, and the pressure receiving body is provided with a spring for pushing to the secondary side. The present invention relates to an improvement of a constant pressure valve for a water supply in a form in which a tubular valve body is provided which is connected to a front end side facing a primary side and faces a valve seat provided in a valve box.
【０００２】[0002]
【従来の技術】建築物の高層化にともない、水道水の圧
力も高圧化されてきていることから、この高圧化してい
る水道水を直接使用すると、吐水量の調節がしにくく、
また、ウオーターハンマー現象が甚しくなる問題がでて
くる。このことから、水道本管官から支管により各家庭
に入るところに、減圧弁（水道用定圧弁）を設けて、高
圧の水道水を２〜３Kg／cm2 の圧力として使用すること
が多くなってきている。特に高層マンションにおいて
は、上階と下階とでの圧力差をなくすために、この水道
用定圧弁の使用は必要とされている。2. Description of the Related Art Since the pressure of tap water has been increased with the increase in the height of buildings, it is difficult to control the amount of water discharged by directly using this high-pressure tap water.
In addition, there is a problem that the water hammer phenomenon becomes serious. For this reason, a pressure reducing valve (constant pressure valve for water supply) is installed at a place where each household enters into a home by a branch pipe, and high-pressure tap water is often used as a pressure of 2 to 3 kg / cm 2. Is coming. Especially in high-rise condominiums, it is necessary to use this constant pressure valve for water supply in order to eliminate the pressure difference between the upper floor and the lower floor.
【０００３】ところで、このように使用される水道用定
圧弁Ａの従前のものは、例えば、特開昭６２−６２０６
５号公報にあるものについて具体的にいえば、図１に示
している如く、パイプ状に形成した弁箱１内に、その弁
箱１の２次室ｙ側の圧力を感知して軸方向に動くよう筒
状に形成した受圧体２を組込み、その受圧体２の１次室
ｗ側に向う前端側に、筒状の側面シール弁の弁体３の基
端側を連結し、この弁体３の前端の開口端縁に対向さす
弁座４を保持する弁座金具５を、弁箱１に一体的に組付
け、前記受圧体２を２次室ｙ側に押し出すバネ６を、弁
箱１内で前記筒状の側面シール弁の弁体３の外周部位に
前記２次室ｙおよび１次室ｗに対し遮閉して形成したバ
ネ室ｚ内に装設し、そのバネ室ｚを弁箱１の外部に連通
孔１０を介して連通し、弁箱１の１次室ｗ側の端部およ
び２次室ｙ側の端部にそれぞれ接続筒部１１・１２を形
設することで構成してある。By the way, the conventional constant pressure valve A for water supply used in this way is disclosed in, for example, Japanese Patent Laid-Open No. 62-6206.
Specifically, as shown in FIG. 1, the valve box 1 formed in a pipe shape has an axial direction in which the pressure on the secondary chamber y side of the valve box 1 is sensed as shown in FIG. The pressure receiving body 2 formed in a tubular shape so as to move to the inside is incorporated, and the front end side of the pressure receiving body 2 facing the primary chamber w side is connected to the base end side of the valve body 3 of the cylindrical side seal valve. A valve seat fitting 5 that holds a valve seat 4 facing the opening edge of the front end of the body 3 is integrally assembled to the valve box 1, and a spring 6 that pushes the pressure receiving body 2 toward the secondary chamber y side is provided. Inside the box 1, a cylindrical side seal valve is mounted in a spring chamber z formed on the outer peripheral portion of the valve body 3 so as to be shielded from the secondary chamber y and the primary chamber w. To communicate with the outside of the valve box 1 through the communication hole 10, and to form the connecting cylinders 11 and 12 at the end on the primary chamber w side and the end on the secondary chamber y side of the valve box 1, respectively. Composed of And Aru.
【０００４】そして、これにより、接続筒部１１・１２
を１次側および２次側に接続した状態において、１次側
から水道水を供給したとき、それにより２次側の圧力が
所定の圧力に達すると、受圧体２がバネ６の付勢に抗し
て１次側に押し込まれ、その受圧体２の前端側に連続す
る筒状の弁体３の前端の開口端縁３０が弁座４に衝合し
て、その弁体３の筒状の側壁面で１次室ｗ側と２次室ｙ
側との連通を遮断して、２次側の圧力をバネ６に設定さ
れる所定の圧力に保持するようにしてある。As a result, the connecting cylinders 11 and 12 are
When tap water is supplied from the primary side in a state in which is connected to the primary side and the secondary side, and thereby the pressure on the secondary side reaches a predetermined pressure, the pressure receiving body 2 biases the spring 6. The opening end edge 30 of the front end of the cylindrical valve body 3 which is pushed into the primary side against and is continuous to the front end side of the pressure receiving body 2 collides with the valve seat 4 to form the cylindrical shape of the valve body 3. Side wall surface of the primary chamber w side and secondary chamber y
The pressure on the secondary side is maintained at a predetermined pressure set in the spring 6 by cutting off the communication with the side.
【０００５】[0005]
【発明が解決しようとする課題】上述の如く構成されて
いる従前の水道用定圧弁Ａは、ボイラー等に使用される
大型の減圧弁をベースとして、それの設定圧を変えたも
のを使用していることで、大型でコストが高くなってい
るだけでなく、第１に、弁のシール性が悪い、第２に、
流量小から流量大に流量を変化させたとき、および流量
大から流量小に流量を変化させたときの、流量変化に対
するヒステリシスが悪い、第３に、流量変化に対し２次
側の圧力変化が大きい、という問題がある。The conventional constant pressure valve for water supply A constructed as described above is based on a large pressure reducing valve used in a boiler or the like, and has a different set pressure. Not only is it large and costly, but firstly, the valve sealability is poor, and secondly,
When the flow rate is changed from a small flow rate to a large flow rate, and when the flow rate is changed from a large flow rate to a small flow rate, the hysteresis with respect to the flow rate change is poor. Thirdly, the pressure change on the secondary side with respect to the flow rate change is There is a problem of being large.
【０００６】[0006]
【目的】本発明は、上述の筒状の弁体を用いた形態の従
前の水道用定圧弁に生じている問題を解消せしめるため
になされたものであって、コストの低い小型の水道用定
圧弁を、弁体の弁座に対するシール性を良くする手段お
よび、流量変化に対するヒステリシスを良好にする手段
ならびに、流量変化に対する２次側の圧力変化を小さく
し得るように構成する新たな手段を提供することを目的
とする。[Purpose] The present invention has been made in order to solve the problem that has occurred in the conventional constant pressure valve for water supply in the form of using the above-mentioned tubular valve element, and is a small-sized water supply constant with low cost. Provided is a means for improving the sealing property of the pressure valve with respect to the valve seat, a means for improving hysteresis with respect to the flow rate change, and a new means for configuring the secondary side pressure change with respect to the flow rate change to be small. The purpose is to do.
【０００７】[0007]
【課題を解決するための手段】本発明は、上述の目的を
達成するために種々の研究を重ねて得られた知見に基い
て完成したものである。The present invention has been completed on the basis of the knowledge obtained by various studies for achieving the above-mentioned object.
【０００８】即ち、従前の水道用定圧弁に生じていた第
１の問題点である弁体と弁座との間のシール性が悪い点
は、ボディとなる弁箱１内に軸方向に可動に設ける筒状
の弁体３の前端の開口端縁３０と衝合させるように弁箱
１内に装設する弁座４が、弁箱１に対し一体に連続させ
て形設せる弁座金具５に保持させてあることで、この弁
座４の弁箱１に対する自由度が全くない状態となってい
ることから、受圧体２の受圧作動で弁体３を１次室ｗ側
に押し出し、それの前端の開口端縁３０を図２に示す如
く弁座４に衝合させて、１次室ｗ側と２次室ｙ側とを遮
断する状態となったときに、受圧体２と共に軸方向に動
く筒状の弁体３の動きにより生ずる弁体３の軸心線の僅
かの傾きで、その弁体３の開口端縁３０が弁座４のシー
ト面に対し片当りの状態となることに起因していること
が判ってきた。That is, the first problem that has occurred in the conventional constant pressure valve for water supply is that the sealability between the valve body and the valve seat is poor, so that the valve box 1 serving as the body is movable in the axial direction. A valve seat fitting mounted in the valve box 1 so as to abut against the opening edge 30 of the front end of the cylindrical valve body 3 provided in the valve seat 3 formed integrally and continuously with the valve box 1. Since the valve seat 4 is held at 5, the valve seat 4 has no degree of freedom with respect to the valve housing 1. Therefore, the pressure receiving operation of the pressure receiving body 2 pushes the valve body 3 toward the primary chamber w side. When the opening edge 30 at the front end thereof is abutted against the valve seat 4 as shown in FIG. 2 and the primary chamber w side and the secondary chamber y side are shut off, the shaft together with the pressure receiving body 2 is rotated. With a slight inclination of the axial center line of the valve body 3 caused by the movement of the tubular valve body 3 moving in the direction, the opening edge 30 of the valve body 3 hits the seat surface of the valve seat 4 one-sidedly. It has been found that due to the fact that a state.
【０００９】そして、このことから、弁座４を保持させ
る弁座金具５を、図３に示している如く、パイプ状の弁
箱１と別体に形成して、弁箱１内に軸方向に自在に動く
よう嵌装し、弁箱１内における１次側への動きをストッ
プさせる金属材よりなるストップリングａと、２次側へ
の動きを押えるスぺーサーｂとにより、弁箱１内の所定
の位置に組込み、かつ、スぺーサーｂと弁座金具５との
間に僅かの間隙Ｄを存在させておいて、これにより弁座
金具５に自由度をもたせておいたところ、弁体３の開口
端縁３０がこの弁座金具５に保持せる弁座４のシート面
に衝合してきたときに生じていた片当りがなくなって、
シール性を良好にする結果が得られるようになった。From this, the valve seat fitting 5 for holding the valve seat 4 is formed separately from the pipe-shaped valve box 1 as shown in FIG. The valve box 1 by means of a stop ring a made of a metal material, which is fitted so as to freely move in the valve box 1 and stops the movement toward the primary side in the valve box 1, and the spacer b which suppresses the movement toward the secondary side. When it is installed in a predetermined position inside and a slight gap D is present between the spacer b and the valve seat fitting 5, so that the valve seat fitting 5 has a degree of freedom, The one-sided contact that occurs when the opening edge 30 of the valve body 3 abuts against the seat surface of the valve seat 4 which can be held by the valve seat fitting 5, disappears,
The result is that the sealing property is improved.
【００１０】また、第２の問題点である流量を変化させ
たときのヒステリシスが悪い点は、受圧体２が弁箱１に
対し軸方向に動くときの、弁箱１内周面に対する摺動抵
抗が大きく、この受圧体２の動きが鈍いことに起因して
いることが判ったこと、そして、これには、受圧体２の
外周面と弁箱１の内周面との間の水密を保持するために
受圧体２の外周面に設けた環状溝２０に嵌装していた水
密保持部材７を、受圧体２の外周から外し、弁箱１の内
周面に前述の図３に示している如く環状溝ｃを形成し
て、ここに水密保持部材７を嵌装し、受圧体２の外周面
を環状溝２０のない平滑面に形成したところ、受圧体２
の弁箱１に対する摺動が円滑になって、敏感に動くよう
になり、流量変化に対するヒステリシスを良好にする結
果が得られるようになった。The second problem is that the hysteresis when the flow rate is changed is bad, and the sliding on the inner peripheral surface of the valve box 1 when the pressure receiving body 2 moves axially with respect to the valve box 1. It was found that the resistance was large and the movement of the pressure receiving body 2 was sluggish, and the water tightness between the outer peripheral surface of the pressure receiving body 2 and the inner peripheral surface of the valve box 1 was confirmed by this. The watertight holding member 7 fitted in the annular groove 20 provided on the outer peripheral surface of the pressure receiving body 2 for holding is removed from the outer periphery of the pressure receiving body 2 and is shown on the inner peripheral surface of the valve box 1 in FIG. When the watertight holding member 7 is fitted in the annular groove c as described above, and the outer peripheral surface of the pressure receiving body 2 is formed into a smooth surface without the annular groove 20, the pressure receiving body 2
The sliding of No. 1 with respect to the valve box 1 became smoother and moved more sensitively, and the result that the hysteresis with respect to the change in the flow rate was improved was obtained.
【００１１】また、第３の問題点である流量変化に対す
る２次側の圧力変化が大きい点は、筒状の側面シール弁
に形成している弁体３の筒壁の前端の開口端縁３０を形
成する端面を、外周側が大径で内周側が小径となるテー
パー面に形成して開口端縁３０が尖鋭なエッジを形成す
るようにしているが、このテーパー面が筒壁の肉厚を数
ミリにしていることで、かなりの面積となり、弁座４の
シート面に衝突して反射してくる水流がこのテーパー面
に当ることで受ける流動抵抗によるものであることが判
り、このことから、筒状の側面シール弁に形成する弁体
３の筒壁の肉厚を、１ミリ以下に薄くし、かつ、前端の
開口端縁３０を形成する端面を、側断面において半円弧
状に形成したところ、流量変化に対する２次圧力の変化
を小さく抑えられる結果が得れれた。The third problem is that the change in pressure on the secondary side with respect to the change in flow rate is large, and the opening edge 30 at the front end of the cylindrical wall of the valve body 3 formed in the cylindrical side face seal valve. The end surface that forms the opening is formed as a tapered surface with a large diameter on the outer peripheral side and a small diameter on the inner peripheral side so that the opening edge 30 forms a sharp edge. This tapered surface reduces the wall thickness of the cylinder wall. By setting it to several millimeters, it becomes a considerable area, and it is understood that the water flow that collides with the seat surface of the valve seat 4 and is reflected is due to the flow resistance received by hitting this tapered surface. The wall thickness of the cylinder wall of the valve body 3 formed in the cylindrical side face seal valve is reduced to 1 mm or less, and the end face forming the opening end edge 30 at the front end is formed in a semi-arc shape in a side cross section. As a result, the change in secondary pressure due to the change in flow rate can be suppressed to a small level. Results were being obtained.
【００１２】そして、このことから本発明においては、
上述の目的を達成するための手段として、一端側に１次
側と接続する接続筒部を具備し他端側に２次側と接続す
る接続筒部を具備するパイプ状の弁箱内に、２次側の圧
力変化により軸方向に動く筒状の受圧体を嵌装して、バ
ネにより２次側に押し出すよう付勢し、その受圧体の１
次側に向う前端側に、筒状の側面シール弁に形成した弁
体を装設し、弁箱内の１次側に寄る部位に、前記筒状の
弁体の前端の開口端縁と衝合さす弁座を保持せしめる弁
座金具を弁箱と別体に形成して、弁箱の軸方向に可動に
嵌装し、その弁座金具を、１次側への動きを阻止するス
トップリングと２次側への動きを抑えるスぺーサーとに
より所定位置に組付け、かつ、その弁座金具とスぺーサ
ーとの間に、少しの間隙を存在させて、該弁座金具に自
由度を保持せしめたことを特徴とする水道用定圧弁を提
起するものである。From this, in the present invention,
As means for achieving the above-mentioned object, in a pipe-shaped valve box, which has a connecting cylinder part connected to the primary side on one end side and a connecting cylinder part connected to the secondary side on the other end side, A cylindrical pressure receiving body that moves in the axial direction according to the pressure change on the secondary side is fitted, and is urged by a spring to be pushed out to the secondary side.
On the front end side facing the next side, a valve body formed in a cylindrical side surface seal valve is installed, and at a portion close to the primary side in the valve box, the opening end edge of the front end of the cylindrical valve body collides. A stop ring that forms a valve seat fitting that holds the mating valve seat separately from the valve box and movably fits in the axial direction of the valve box, and prevents the valve seat fitting from moving to the primary side. And a spacer that suppresses the movement to the secondary side are assembled in a predetermined position, and a small gap is present between the valve seat fitting and the spacer, so that the valve seat fitting has a degree of freedom. It proposes a constant pressure valve for water supply, which is characterized in that
【００１３】また、同時に、上述の水道用定圧弁におい
て、弁箱内に軸方向に可動に嵌装する受圧体の外周面と
弁箱の内周面との間に介装する水密保持部材を、弁箱の
内周面に形設した環状溝に嵌装して受圧体の外周面を平
滑面に形成したことを特徴とする水道用定圧弁を提起す
るものである。さらに、上述の水道用定圧弁において、
弁箱内に軸方向に可動に嵌装する受圧体の前端側に装設
する筒状の側面シール弁の弁体の筒壁を、１ミリ以下の
肉厚に形成して、それの前端の開口端縁の端面を、側断
面において半円孤面に形成したことを特徴とする水道用
定圧弁を提起するものである。At the same time, in the above-described constant pressure valve for water supply, a watertight holding member is provided between the outer peripheral surface of the pressure receiving member axially movably fitted in the valve box and the inner peripheral surface of the valve box. The present invention provides a constant pressure valve for water supply, characterized in that the outer peripheral surface of the pressure receiving body is formed into a smooth surface by being fitted in an annular groove formed on the inner peripheral surface of the valve box. Furthermore, in the above water pressure regulator,
The cylindrical wall of the valve body of the cylindrical side seal valve mounted on the front end side of the pressure receiving body axially movably fitted in the valve box is formed to have a wall thickness of 1 mm or less, and The present invention provides a constant pressure valve for water supply, characterized in that the end surface of the opening edge is formed in a semicircular arc surface in a side cross section.
【００１４】[0014]
【実施例】次に実施例を図面に従い詳述する。なお、図
面符号は、従前手段のものと同効の構成部材については
同一の符号を用いるものとする。Embodiments Next, embodiments will be described in detail with reference to the drawings. The same reference numerals are used for the constituent elements having the same effect as those of the conventional means.
【００１５】図３は、本発明を実施せる水道用定圧弁Ａ
の第１の実施例の縦断側面図で、同図において、１はパ
イプ状に形成した弁箱、ｗは弁箱１内の一端側に形成し
た１次室、ｙは弁箱１内の他端側に形成した２次室、１
１は弁箱１の１次室ｗ側の端部に形成した接続筒部、１
２は弁箱１の２次室ｙ側の端部に形成した接続筒部、２
は弁箱１内に軸方向に可動に組込んだ筒状の受圧体、３
は筒状の側面シール弁に形成して前記受圧体２の１次側
に向う前端側に装設した弁体、３０はその弁体３の前端
の開口端縁、４は前記弁体３の開口端縁３０と衝合させ
る弾褥材よりなる弁座、５は前記弁座４を保持させる弁
座金具、６は受圧体２を２次室ｙ側に押し出すよう付勢
するバネ、ｚは前記バネ６を収蔵するバネ室、１０はバ
ネ室ｚを弁箱１の外部に連通させる連通孔で、これら
は、図１および図２に示した従前手段のものと基本的に
変わりがない。FIG. 3 is a constant pressure valve A for water supply, which implements the present invention.
1 is a vertical side view of the first embodiment, in which 1 is a pipe-shaped valve box, w is a primary chamber formed at one end side in the valve box 1, and y is other parts in the valve box 1. Secondary chamber formed on the end side, 1
Reference numeral 1 denotes a connecting cylinder portion formed at an end portion of the valve box 1 on the side of the primary chamber w.
2 is a connecting tube portion formed at the end of the valve box 1 on the secondary chamber y side, 2
Is a cylindrical pressure receiving body that is axially movably incorporated in the valve box 1, 3
Is a valve body formed in a cylindrical side seal valve and mounted on the front end side of the pressure receiving body 2 facing the primary side, 30 is an opening edge of the front end of the valve body 3, and 4 is the valve body 3 A valve seat 5 made of an elastic material that abuts against the opening edge 30, 5 is a valve seat fitting for holding the valve seat 4, 6 is a spring for urging the pressure receiving body 2 toward the secondary chamber y side, and z is A spring chamber 10 for accommodating the spring 6 is a communication hole for communicating the spring chamber z with the outside of the valve box 1, and these are basically the same as those of the conventional means shown in FIGS. 1 and 2.
【００１６】しかし、前述の弁座４を保持する弁座金具
５は、弁箱１と別体で、周縁部位に通水孔５０を具備す
る円盤状に形成してあって、弁箱１内に軸方向に自在に
動くよう嵌装して、１次室ｗ側への動きを、弁箱１内周
面に嵌着したストップリングａにより阻止し、２次室ｙ
側への動きを、弁座金具５より２次側に配位して弁箱１
内に嵌装せるスぺーサーｂにより抑えることで、弁箱１
内の所定位置に組付け、かつ、この弁座金具５とスぺー
サーｂとの間には、少しの間隙Ｄを存在させておいて、
この間隙Ｄにより、弁座金具５に弁箱１に対する自由度
をもたせてある。However, the valve seat fitting 5 for holding the above-mentioned valve seat 4 is formed separately from the valve box 1 and is formed in a disk shape having water passage holes 50 in the peripheral portion thereof. It is fitted so that it can move freely in the axial direction, and the movement toward the primary chamber w side is blocked by the stop ring a fitted on the inner peripheral surface of the valve box 1, and the secondary chamber y
The valve box 1 by arranging the movement toward the secondary side from the valve seat fitting 5
The valve box 1 can be held by holding it down with a spacer b fitted inside.
Assemble it at a predetermined position in the inside, and leave a small gap D between the valve seat fitting 5 and the spacer b,
Due to this gap D, the valve seat fitting 5 has a degree of freedom with respect to the valve box 1.
【００１７】また、弁箱１内に軸方向に可動に嵌装した
受圧体２の外周面と弁箱１の内周面との間に介装する水
密保持部材７は、弁箱１の内周面に、この水密保持部材
７を嵌合させる環状溝ｃを形成しておいて、そこに嵌装
するようにしてあり、これにより、弁箱１の内周面に摺
接させる受圧体２の外周面を平滑面に形成してある。Further, the watertight holding member 7 interposed between the outer peripheral surface of the pressure receiving body 2 movably fitted in the valve box 1 in the axial direction and the inner peripheral surface of the valve box 1 is the inside of the valve box 1. An annular groove c into which the watertight holding member 7 is fitted is formed on the circumferential surface and is fitted into the annular groove c, whereby the pressure receiving body 2 slidably contacting the inner circumferential surface of the valve box 1 is formed. The outer peripheral surface of is formed as a smooth surface.
【００１８】そして、この受圧体２の前端側に装設する
筒状の側面シール弁とした弁体３は、それの筒壁３ａの
肉厚を、１ミリ以下の０．５ミリ程度にし、かつ、それ
の前端の開口端縁３０の端面を、側断面において半円弧
状をなす形状に形成してある。Further, in the valve body 3 which is a cylindrical side face seal valve mounted on the front end side of the pressure receiving body 2, the wall thickness of the cylindrical wall 3a thereof is set to about 0.5 mm, which is less than 1 mm, In addition, the end face of the opening edge 30 at the front end thereof is formed in a semi-arcuate shape in a side cross section.
【００１９】ｄは、前記筒状の弁体３の筒壁３ａの外周
面と弁箱１の内周面とを水密に隔離するためのゴム材よ
りなる水密保持部材で、弁箱１内にバネ室ｚの前端側の
隔壁を形成するように装設せる環状の仕切壁１３の内周
面に、環状の嵌入溝１３０を形設して、そこに嵌装して
ある。Reference numeral d designates a watertight holding member made of a rubber material for watertightly separating the outer peripheral surface of the cylindrical wall 3a of the cylindrical valve body 3 and the inner peripheral surface of the valve box 1 from each other. An annular fitting groove 130 is formed on the inner peripheral surface of an annular partition wall 13 that is installed so as to form a partition wall on the front end side of the spring chamber z, and is fitted therein.
【００２０】次に図４は別の実施例の縦断側面図であ
る。この実施例は、前述の実施例における受圧体２と筒
状の弁体３とが、一つの金属材から一体に連続させた形
態のものに形成されているのに対し、その受圧体２と弁
体３とを各別に形成してそれらを一体的に連結している
例である。Next, FIG. 4 is a vertical sectional side view of another embodiment. In this embodiment, the pressure receiving body 2 and the tubular valve body 3 in the above-described embodiment are formed in one and continuous form from one metal material, while the pressure receiving body 2 and the pressure receiving body 2 are integrally formed. This is an example in which the valve body 3 is formed separately and they are integrally connected.
【００２１】即ち、受圧体２は、金属材から中心部位に
透孔２ａを具備するリング状に形成し、また筒状の弁体
３は、金属材から肉薄のパイプ状に形成するとともに基
端側に受圧体２の中心部位の透孔２ａ内に嵌合せしめて
かしめ付ける連結筒部３ｂを形成しておいて、この連結
筒部３ｂと受圧体２の透孔２ａとのかしめ付け、ロー付
け等の止着により受圧体２と弁体３とが一体的に連結し
た形態とした構成のものである。That is, the pressure receiving body 2 is formed of a metal material in the shape of a ring having a through hole 2a in the central portion, and the cylindrical valve body 3 is formed of a metal material in the shape of a thin pipe and at the base end. On the side, a connecting cylinder portion 3b is formed which is fitted into the through hole 2a at the central portion of the pressure receiving body 2 and is caulked, and the connecting cylinder portion 3b and the through hole 2a of the pressure receiving body 2 are caulked and brazed. The pressure receiving body 2 and the valve body 3 are integrally connected to each other by fastening them.
【００２２】この実施例は、この点を除いたその余の構
成は前述の図３に示す実施例のものと変わりがないの
で、同じ構成部材に同一の符号を付して詳しい説明は省
略する。This embodiment is the same as that of the embodiment shown in FIG. 3 except for this point, and therefore the same components are designated by the same reference numerals and detailed description thereof will be omitted. .
【００２３】この実施例は、筒状の側面シール弁の弁体
３を金属材から切削加工により肉薄の筒壁３ａを形成し
ていくときに、大径の受圧体２を考慮せずに切削加工し
ていけることから、材料費を著しく低減させ得るように
なる。In this embodiment, when the thin cylindrical wall 3a is formed by cutting the valve body 3 of the cylindrical side face seal valve from a metal material, the pressure receiving body 2 having a large diameter is cut. Since it can be processed, the material cost can be significantly reduced.
【００２４】次に図５はさらに別の実施例の縦断側面図
を示す。この実施例は、バネ６を収蔵するバネ室ｚの前
端側の隔壁となる仕切壁１３を、弁箱１と別体に形成
し、かつ、この仕切壁１３を、金属材から成形して弁座
金具５の２次側に配設するスぺーサーｂと一体に形成
し、筒状の弁体３の筒壁３ａの外周面と弁箱１の内周面
との間に介装するゴム材よりなる水密保持部材ｄを、ス
ぺーサーｂと一体に形成した前記仕切壁１３の内周面に
嵌装している例である。Next, FIG. 5 shows a vertical sectional side view of still another embodiment. In this embodiment, the partition wall 13 that serves as a partition wall on the front end side of the spring chamber z that stores the spring 6 is formed separately from the valve box 1, and the partition wall 13 is formed of a metal material to form a valve. Rubber formed integrally with a spacer b arranged on the secondary side of the seat fitting 5 and interposed between the outer peripheral surface of the cylindrical wall 3a of the cylindrical valve body 3 and the inner peripheral surface of the valve box 1. This is an example in which the watertight holding member d made of a material is fitted to the inner peripheral surface of the partition wall 13 formed integrally with the spacer b.
【００２５】この実施例においては、スぺーサーｂと一
体に形成した環状の仕切壁１３を、それの内周面の２次
室ｙの端部に形成した縮径段部１３１と、弁箱１の内周
面に形設した環状の突条１４との、圧入によるかしめで
弁箱１内に一体的に組込んであり、かつ、この仕切壁１
３の外周面と弁箱１の内周面との間には水密保持部材１
５が介装してある。In this embodiment, an annular partition wall 13 formed integrally with the spacer b is formed on the inner peripheral surface of the partition wall 13 at the end of the secondary chamber y, and a valve box. 1 is integrally assembled into the valve box 1 by crimping with an annular projection 14 formed on the inner peripheral surface of the partition wall 1.
The watertight holding member 1 is provided between the outer peripheral surface of the valve box 3 and the inner peripheral surface of the valve box 1.
5 is interposed.
【００２６】この実施例も、上述の点を除いたその余の
構成については、前述の図３および図４に示している実
施例のものと変わりがないので、同一の構成部材につい
て同一の符号を付して詳しい説明は省略する。This embodiment is the same as the embodiment shown in FIGS. 3 and 4 except for the above-mentioned points, and the same reference numerals are used for the same constituent members. Is attached and detailed description is omitted.
【００２７】この実施例は、バネ室ｚの前端側の隔壁と
なる仕切壁１３を、弁箱１の内周面から切り離して、弁
箱１内に嵌装するスぺーサーｂに一体に連続させて成形
していることから、弁箱１を形成する金属材が、パイプ
状に成形されたもので良いことになるので、弁箱１の成
形を低コストで作り得るようになる。In this embodiment, the partition wall 13 serving as a partition wall on the front end side of the spring chamber z is separated from the inner peripheral surface of the valve box 1 and is integrally connected to a spacer b fitted in the valve box 1. Since the metal member forming the valve box 1 may be formed in a pipe shape, the valve box 1 can be formed at low cost.
【００２８】[0028]
【発明の効果】以上説明したように、本発明による水道
用定圧弁Ａは、受圧体２の作動により弁箱１内を軸方向
に動く筒状の弁体３の前端の開口端縁３０と対向させる
弁座４を、弁箱１と別体に形成して弁箱１内に自由度を
もたせて組込んだ弁座金具５に保持せしめていることか
ら、筒状の弁体３が軸心線を傾斜させた姿勢で、それの
前端の開口端縁３０を片当りの状態で弁座４のシート面
に衝合してきても、弁座金具５の動きで修正されること
で、弁体３と弁座４との間のシール性を良好にする。As described above, the constant pressure valve A for water supply according to the present invention has the opening end edge 30 at the front end of the tubular valve body 3 that moves axially in the valve box 1 by the operation of the pressure receiving body 2. Since the valve seats 4 to be opposed to each other are formed separately from the valve box 1 and are held by the valve seat fittings 5 incorporated in the valve box 1 with a degree of freedom, the cylindrical valve body 3 has a shaft. Even if the opening end edge 30 at the front end of the cord is abutted against the seat surface of the valve seat 4 in a posture in which the core wire is inclined, it is corrected by the movement of the valve seat fitting 5, Improves the sealability between the body 3 and the valve seat 4.
【００２９】また、受圧体２の外周面と弁箱１の内周面
との間に介装する水密保持部材７を、弁箱１の内周面に
形設せる環状溝ｃに嵌装して受圧体２の外周面を平滑面
としていることから、動きが鋭敏になって、流量変化に
対するヒステリシスを良好にする。A watertight holding member 7 interposed between the outer peripheral surface of the pressure receiving body 2 and the inner peripheral surface of the valve box 1 is fitted in an annular groove c formed in the inner peripheral surface of the valve box 1. Since the outer peripheral surface of the pressure receiving body 2 is a smooth surface, the movement becomes sharp and the hysteresis with respect to the flow rate change is improved.
【００３０】また、筒状の弁体３の筒壁３ａを１ミリ以
下の肉厚にして、前端の開口端縁３０の端面を、側断面
において半円孤面に形成していることから、この開口端
縁３０の端面に、弁座４のシート面に衝突して反射して
くる水流が当ることによる影響が著しく小さくなって、
流量変化に対する２次圧力の変化を小さく抑えられるよ
うになる。Further, since the cylindrical wall 3a of the cylindrical valve body 3 has a wall thickness of 1 mm or less and the end face of the opening end edge 30 at the front end is formed into a semi-circular surface in the side cross section, The influence of the water flow reflected on the seat surface of the valve seat 4 colliding with the end surface of the opening edge 30 is significantly reduced,
The change in the secondary pressure with respect to the change in the flow rate can be suppressed small.
【図１】従前の水道用定圧弁の縦断側面図である。FIG. 1 is a vertical sectional side view of a conventional constant pressure valve for water supply.
【図２】同上の水道用定圧弁の作用の説明図である。FIG. 2 is an explanatory view of the action of the above water supply constant pressure valve.
【図３】本発明による水道用定圧弁の縦断側面図であ
る。FIG. 3 is a vertical sectional side view of a constant pressure valve for water supply according to the present invention.
【図４】同上水道用定圧弁の別の実施例の縦断側面図で
ある。FIG. 4 is a vertical sectional side view of another embodiment of the constant pressure valve for waterworks.
【図５】同上水道用定圧弁のさらに別の実施例の縦断側
面図である。FIG. 5 is a vertical sectional side view of still another embodiment of the constant pressure valve for waterworks.
【図６】同上水道用定圧弁の流量変化と２次圧力変化と
の関係を表わす図表である。FIG. 6 is a chart showing a relationship between a flow rate change and a secondary pressure change of the waterworks constant pressure valve.
【図７】従前の水道用定圧弁の流量変化と２次圧力変化
との関係を表わす図表である。FIG. 7 is a chart showing the relationship between the flow rate change and the secondary pressure change of the conventional constant pressure valve for water supply.
Ａ…水道用定圧弁、ａ…ストップリング、ｂ…スぺーサ
ー、ｃ…環状溝、ｄ…水密保持部材、ｗ…１次室、ｙ…
２次室、、Ｄ…間隙、１…弁箱、１０…連通孔、１１・
１２…接続筒部、１３…仕切壁、１３０…嵌入溝、１３
１…縮径段部、１４…突条、１５…水密保持部材、２…
受圧体、２ａ…透孔、２０…環状溝、３…弁体、３ａ…
筒壁、３ｂ…連結筒部、３０…開口端縁、４…弁座、５
…弁座金具、５０…通水孔、６…バネ、７…水密保持部
材。A ... Constant pressure valve for water supply, a ... Stop ring, b ... Spacer, c ... Annular groove, d ... Watertight holding member, w ... Primary chamber, y ...
Secondary chamber, D ... Gap, 1 ... Valve box, 10 ... Communication hole, 11 ...
12 ... Connection tube part, 13 ... Partition wall, 130 ... Fitting groove, 13
DESCRIPTION OF SYMBOLS 1 ... Reduced diameter step part, 14 ... Ridge, 15 ... Watertight holding member, 2 ...
Pressure receiving body, 2a ... Through hole, 20 ... Annular groove, 3 ... Valve body, 3a ...
Cylindrical wall, 3b ... Connection tubular portion, 30 ... Opening edge, 4 ... Valve seat, 5
... Valve seat metal fittings, 50 ... Water passage holes, 6 ... Spring, 7 ... Watertight holding member.
Claims (5)
を具備し他端側に２次側と接続する接続筒部１２を具備
するパイプ状の弁箱１内に、２次側の圧力変化により軸
方向に動く筒状の受圧体２を嵌装して、バネ６により２
次側に押し出すよう付勢し、その受圧体２の１次側に向
う前端側に、筒状の側面シール弁に形成した弁体３を装
設し、弁箱１内の１次側に寄る部位に、前記筒状の弁体
３の前端の開口端縁３０と衝合さす弁座４を保持せしめ
る弁座金具５を弁箱１と別体に形成して、弁箱１の軸方
向に可動に嵌装し、その弁座金具５を、１次側への動き
を阻止するストップリングａと２次側への動きを抑える
スぺーサーｂとにより所定位置に組付け、かつ、その弁
座金具５とスぺーサーｂとの間に、少しの間隙を存在さ
せて、該弁座金具５に自由度を保持せしめたことを特徴
とする水道用定圧弁。1. A connecting cylinder portion 11 having one end connected to the primary side.
And a tubular pressure receiving body 2 that moves in the axial direction due to a pressure change on the secondary side is fitted in a pipe-shaped valve box 1 having a connecting tubular portion 12 that is connected to the secondary side at the other end. 2 by spring 6
The valve body 3 formed in a cylindrical side seal valve is installed on the front end side of the pressure receiving body 2 facing the primary side so as to push it toward the next side, and the valve body 3 approaches the primary side in the valve box 1. A valve seat fitting 5 for holding the valve seat 4 that abuts the opening edge 30 of the front end of the tubular valve body 3 is formed separately from the valve box 1 in the axial direction of the valve box 1. The valve seat fitting 5 is movably fitted and assembled at a predetermined position by a stop ring a for preventing movement to the primary side and a spacer b for suppressing movement to the secondary side, and the valve A constant pressure valve for water supply, characterized in that a small gap is present between the seat fitting (5) and the spacer (b) to allow the valve seat fitting (5) to have a degree of freedom.
体２の外周面と弁箱１の内周面との間に介装する水密保
持部材７を、弁箱１の内周面に形設した環状溝ｃに嵌装
して受圧体２の外周面を平滑面に形成したことを特徴と
する請求項１記載の水道用定圧弁。2. A watertight holding member 7 interposed between an outer peripheral surface of a pressure receiving body 2 axially movably fitted in the valve housing 1 and an inner peripheral surface of the valve housing 1 is provided in the valve housing 1. 2. The constant pressure valve for water supply according to claim 1, wherein the outer peripheral surface of the pressure receiving body 2 is formed into a smooth surface by being fitted in an annular groove c formed in the peripheral surface.
体２の前端側に装設する筒状の側面シール弁の弁体３の
筒壁３ａを、１ミリ以下の肉厚に形成して、それの前端
の開口端縁３０の端面を、側断面において半円孤面に形
成したことを特徴とする請求項１記載の水道用定圧弁。3. A cylinder wall 3a of a valve body 3 of a cylindrical side seal valve mounted on the front end side of a pressure receiving body 2 which is movably fitted in the valve box 1 in the axial direction, has a wall thickness of 1 mm or less. The constant pressure valve for water supply according to claim 1, characterized in that the end face of the opening end edge 30 at the front end thereof is formed into a semicircular arc surface in a side cross section.
し出すバネ６を収蔵さすバネ室ｚの前端側の隔壁となる
仕切壁１３を、弁箱１と別体に形成するとともに弁座金
具５の２次側に配設するスぺーサーｂに一体に形成し、
筒状の弁体３の筒壁３ａの外周面と弁箱１の内周面との
間に介装する水密保持部材ｄを、スぺーサーｂに一体に
形成した前記仕切壁１３の内周面に嵌装したことを特徴
とする請求項１記載の水道用定圧弁。4. A partition wall 13, which is a partition wall on the front end side of a spring chamber z for accommodating a spring 6 for pushing a pressure receiving body 2 assembled in a valve box 1 to a secondary side, is formed separately from the valve box 1. Formed integrally with the spacer b arranged on the secondary side of the valve seat fitting 5,
A watertight holding member d interposed between the outer peripheral surface of the cylindrical wall 3a of the cylindrical valve body 3 and the inner peripheral surface of the valve box 1 is formed integrally with the spacer b on the inner periphery of the partition wall 13. The constant pressure valve for water supply according to claim 1, wherein the constant pressure valve is fitted on a surface.
その受圧体２の前端側に装設する側面シール弁の筒状の
弁体３とを、それぞれ金属材から各別に形成して、それ
ら受圧体２と筒状の弁体３とを一体に接続連結せしめた
ことを特徴とする請求項１記載の水道用定圧弁。5. A cylindrical pressure receiving body 2 fitted in the valve box 1,
A cylindrical valve body 3 of a side seal valve mounted on the front end side of the pressure receiving body 2 is separately formed from a metal material, and the pressure receiving body 2 and the cylindrical valve body 3 are integrally connected. The constant pressure valve for water supply according to claim 1, wherein the constant pressure valve is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6027398A JP2767544B2 (en) | 1994-01-31 | 1994-01-31 | Constant pressure valve for water supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6027398A JP2767544B2 (en) | 1994-01-31 | 1994-01-31 | Constant pressure valve for water supply |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07219642A true JPH07219642A (en) | 1995-08-18 |
| JP2767544B2 JP2767544B2 (en) | 1998-06-18 |
Family
ID=12219962
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6027398A Expired - Lifetime JP2767544B2 (en) | 1994-01-31 | 1994-01-31 | Constant pressure valve for water supply |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2767544B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109595369A (en) * | 2017-10-02 | 2019-04-09 | 株式会社日气 | Adjuster |
| CN110886858A (en) * | 2018-09-11 | 2020-03-17 | 株式会社日气 | Regulator |
| JP2020135140A (en) * | 2019-02-14 | 2020-08-31 | 株式会社ニッキ | regulator |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11933408B2 (en) * | 2018-04-17 | 2024-03-19 | Nelson Irrigation Corporation | Multi-function pressure regulation valve |
-
1994
- 1994-01-31 JP JP6027398A patent/JP2767544B2/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109595369A (en) * | 2017-10-02 | 2019-04-09 | 株式会社日气 | Adjuster |
| JP2019067216A (en) * | 2017-10-02 | 2019-04-25 | 株式会社ニッキ | regulator |
| CN109595369B (en) * | 2017-10-02 | 2022-03-22 | 株式会社日气 | Regulator |
| CN110886858A (en) * | 2018-09-11 | 2020-03-17 | 株式会社日气 | Regulator |
| JP2020135140A (en) * | 2019-02-14 | 2020-08-31 | 株式会社ニッキ | regulator |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2767544B2 (en) | 1998-06-18 |
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