JP2767550B2 - Pressure reducing valve for tap water - Google Patents
Pressure reducing valve for tap waterInfo
- Publication number
- JP2767550B2 JP2767550B2 JP11766894A JP11766894A JP2767550B2 JP 2767550 B2 JP2767550 B2 JP 2767550B2 JP 11766894 A JP11766894 A JP 11766894A JP 11766894 A JP11766894 A JP 11766894A JP 2767550 B2 JP2767550 B2 JP 2767550B2
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- valve
- case
- pressure reducing
- primary side
- 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
- Safety Valves (AREA)
- Control Of Fluid Pressure (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、水道水の圧力を所定の
圧力に低下させるように使用する水道水用の減圧弁（定
圧弁）のうちで、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
装設して構成する一軸減圧弁の形態の水道水用減圧弁に
ついての改良に関する。BACKGROUND OF THE INVENTION The present invention relates to a pressure reducing valve (constant pressure valve) for tap water used to reduce the pressure of tap water to a predetermined pressure. A pressure receiving body that operates by sensing the pressure on the secondary side is provided, and a spring that is pushed out to the secondary side is connected to the pressure receiving body, and a valve seat provided on a valve box is provided on a front end side facing the primary side. The present invention relates to an improvement on a tap water pressure reducing valve in the form of a single-shaft pressure reducing valve provided with a cylindrical valve body.
【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
水用の減圧弁の使用は必要とされている。2. Description of the Related Art The pressure of tap water has been increasing with the rise of buildings, so if this high-pressure tap water is used directly, it is difficult to control the amount of water discharged.
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 provided at a place where each household enters from a water main through a branch pipe, and high-pressure tap water is used at a pressure of 2-3 kg / cm 2. ing. In particular, in high-rise apartments, the use of this tap water reducing valve is required 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水用
の減圧弁Ａの従前のものは、例えば、特開昭６２−６２
０６５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たるケース
１内に、そのケース１の２次側ｙの圧力を感知して軸方
向に動くよう筒状に形成した感圧体２を組込み、その感
圧体２の１次側ｗ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、ケース１
に一体的に組付け、前記感圧体２を２次側ｙに押し出す
バネ６を、ケース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次側ｙおよび１次側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をケー
ス１の外部に連通孔１０を介して連通し、ケース１の１
次側ｗの端部および２次側ｙの端部にそれぞれ接続筒部
１１・１２を形設することで一軸減圧弁の形態に構成し
てある。A conventional pressure reducing valve A for tap water used in this manner is disclosed in, for example, Japanese Patent Laid-Open No. 62-62.
065, specifically, FIG.
As shown in the figure, a pressure-sensitive body 2 formed in a cylindrical shape so as to move in the axial direction by sensing the pressure on the secondary side y of the case 1 is incorporated in a case 1 which is a valve box formed in a pipe shape, The front end of the pressure sensing element 2 facing the primary side w is connected to the base end of the valve element 3 of the cylindrical side seal valve, and the valve seat 4 faces the opening edge of the front end of the valve element 3. The valve seat metal fitting 5 for holding the
A spring 6 for pushing the pressure-sensitive element 2 toward the secondary side y is integrally mounted on the outer peripheral portion of the valve body 3 of the cylindrical side seal valve in the case 1. It is installed in a spring chamber z formed so as to be shielded from the side w, and the spring chamber z communicates with the outside of the case 1 through a communication hole 10, and
The connecting cylinders 11 and 12 are formed at the end of the secondary side w and the end of the secondary side y, respectively, to form a single-shaft pressure reducing valve.
【０００４】そして、これにより、接続筒部１１・１２
を１次側ｗの配管および２次側ｙの配管に接続した状態
において、１次側ｗから水道水を供給したとき、それに
より２次側ｙの圧力が所定の圧力に達すると、感圧体２
がバネ６の付勢に抗して１次側ｗに押し込まれ、その感
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次側ｗと２次側ｙとの連通を遮断して、２次側ｙ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。[0004] Thus, the connecting cylinders 11 and 12
Is connected to the pipe on the primary side w and the pipe on the secondary side y, when tap water is supplied from the primary side w, and when the pressure on the secondary side y reaches a predetermined pressure, pressure-sensitive Body 2
Is pushed into the primary side w against the bias of the spring 6, and the opening edge 30 of the front end of the cylindrical valve body 3 continuous with the front end side of the pressure sensing body 2 abuts against the valve seat 4. Then, the communication between the primary side w and the secondary side y is interrupted by the cylindrical side wall surface of the valve body 3 so that the pressure on the secondary side y is maintained at a predetermined pressure set by the spring 6. It is.
【０００５】また、このように構成されている従前の水
道水用の減圧弁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、流量変化に対ずるヒス
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。Further, the conventional pressure reducing valve A for tap water configured as described above uses a large pressure reducing valve used for a boiler or the like as a base and a set pressure thereof is changed. As a result, not only is the size large and the cost is high, but also, first, the sealing performance of the valve is poor, and second, when the flow rate is changed from a small flow rate to a large flow rate, and from a large flow rate to a small flow rate. When the flow rate is changed, there is a problem that hysteresis for the flow rate change is poor, and thirdly, a change in pressure on the secondary side is large with respect to the flow rate change.
【０００６】このことから、出願人は、水道水用の減圧
弁Ａを構成するに際し、図２に示す如く、一端側に１次
側ｗと接続する接続筒部１１を具備し他端側に２次側ｙ
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ｙ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ｙに押し出すよう
付勢し、その感圧体２の１次側ｗ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、ケース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
ケース１と別体に形成して、ケース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ペーサー
ｂとにより所定位置に組付け、かつ、その弁座金具５と
スペーサーｂとの間に、少しの間隙Ｄを存在させて、該
弁座金具５に自由度を保持せしめておくこと、また、そ
れの弁箱１内に軸方向に可動に嵌装する感圧体２の外周
面とケース１の内周面との間に介装する水密保持部材７
を、ケース１の内周面に形設した環状溝ｃに嵌装して感
圧体２の外周面を平滑面に形成しておくこと、さらに、
ケース１内に軸方向に可動に嵌装する感圧体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３
０の端面を、側断面において半円孤面に形成しておく手
段を開発し、特願平６−２７３９８号として出願してい
る。For this reason, when configuring the pressure reducing valve A for tap water, as shown in FIG. 2, the applicant has a connecting cylinder portion 11 connected to the primary side w at one end and a connecting cylinder 11 at the other end. Secondary side y
A cylindrical pressure receiving body 2 that moves in the axial direction due to a change in pressure on the secondary side y is fitted into a pipe-shaped valve box 1 having a connection cylindrical portion 12 connected to the secondary side y. The pressure sensitive element 2 is provided with a valve body 3 formed on a cylindrical side seal valve at the front end side of the pressure sensitive body 2 facing the primary side w, and a portion closer to the primary side in the case 1. In addition, a valve seat metal fitting 5 for holding a valve seat 4 abutting against an opening edge 30 at the front end of the cylindrical valve body 3 is formed separately from the case 1 and is movably fitted in the axial direction of the case 1. The valve seat 5 is 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. b, a small gap D exists between the valve seat 5 and the valve seat 5 to maintain a degree of freedom. Watertight holding member 7 interposed between the inner peripheral surface of the outer peripheral surface and the casing 1 of the pressure sensitive element 2 fitted movably direction
Is fitted in an annular groove c formed on the inner peripheral surface of the case 1 to form the outer peripheral surface of the pressure-sensitive body 2 as a smooth surface.
The cylindrical wall 3a of the valve body 3 of the cylindrical side seal valve provided on the front end side of the pressure sensitive body 2 fitted movably in the axial direction in the case 1
It is formed to a thickness of 1 mm or less, and has an opening edge 3 at the front end thereof.
A means has been developed for forming the end face of 0 as a semicircular surface in a side cross section, and has been filed as Japanese Patent Application No. 6-27398.
【０００７】[0007]
【発明が解決しようとする課題】上述の水道水用の減圧
弁Ａは、図１に示す従前の形態のもの、また、図２に示
す出願人が開発した改良型のものの何れのものにあって
も、単体の減圧弁として配管に接続して使用することか
ら、減圧弁が一個増加するようになって、この増加する
減圧弁の分だけスペースを要するようになることと、実
際には、図３および図４に示している如く、ストップバ
ルブｓｔｖと水道メーターＭとの間の配管Ｂの途中を切
断してそこに減圧弁Ａを接続するか、または、ストップ
バルブｓｔｖと給水栓Ｃとの間の配管Ｂの途中を切断し
てそこに減圧弁Ａを組付けるようにすることから、配管
工事の際に、減圧弁Ａを配管Ｂに接続していく手間を要
するようになる問題がある。The pressure reducing valve A for tap water described above is either of the conventional type shown in FIG. 1 or the improved type developed by the applicant shown in FIG. However, since it is connected to the pipe as a single pressure reducing valve and used, the pressure reducing valve is increased by one, and the space is required by the increased pressure reducing valve, and in fact, As shown in FIGS. 3 and 4, the pipe B between the stop valve stv and the water meter M is cut in the middle and the pressure reducing valve A is connected thereto, or the stop valve stv and the water tap C are connected to each other. The piping B is cut in the middle and the pressure reducing valve A is assembled there. Therefore, in piping work, there is a problem that it takes time to connect the pressure reducing valve A to the pipe B. is there.
【０００８】本発明は、上述の従前手段および先行手段
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、水道水用の減圧弁を、それの組付用のスペース
を用意することなく、しかも、配管工事を要することな
く組付けられるようにする新たな手段を提供することを
目的とする。SUMMARY OF THE INVENTION The present invention has been made in order to solve the problems occurring in the above-mentioned prior art means and prior art means, and provides a pressure reducing valve for tap water and a space for assembling the same. It is another object of the present invention to provide a new means that can be assembled without requiring piping work.
【０００９】[0009]
【課題を解決するための手段】そして、本発明は、上述
の目的を達成するための手段として、一方の軸端側に１
次側に対し連通さす開口を備え他方の軸端側に２次側に
対し連通さす開口を具備するパイプ状のケースを、給水
配管に接続するストップバルブ等の水道器具のボディの
内周面にシール部材を介して嵌合する軸筒状に形成し、
そのケース内に、１次側に位置する弁座と、弁座に対向
して軸方向に動く筒状弁と、軸芯心部位に筒状弁を摺動
自在に貫通させてその筒状弁の外周側を１次側に気密に
遮断するシール材と、筒状弁と一体または一体的に連結
して２次側の圧力の感知作動により軸方向に動く感圧体
と、その感圧体を２次側に押し出すバネと、からなる一
軸型減圧弁の減圧機能部を、収蔵せしめて、ストップバ
ルブ等の水道器具のボディ内に組込むカートリッジ状に
組立てたことを特徴とする水道水用の減圧弁を提起する
ものである。According to the present invention, as a means for achieving the above object, one shaft end is provided.
A pipe-shaped case having an opening communicating with the secondary side and having an opening communicating with the secondary side on the other axial end side is provided on the inner peripheral surface of a body of a water supply device such as a stop valve connected to a water supply pipe. Formed into a shaft cylinder that fits through a seal member,
In the case, a valve seat located on the primary side, a cylindrical valve that moves in the axial direction opposite to the valve seat, and a cylindrical valve that is slidably penetrated through a shaft center portion. A sealing member for hermetically sealing the outer peripheral side of the cylinder to the primary side, a pressure-sensitive body integrally or integrally connected to the cylindrical valve, and moving in the axial direction by a pressure sensing operation on the secondary side, and the pressure-sensitive body And a spring for pushing out to the secondary side, the pressure reducing function section of the single-shaft type pressure reducing valve comprising the spring is stored and assembled in a cartridge shape to be incorporated in the body of a water supply device such as a stop valve. A pressure reducing valve is proposed.
【００１０】[0010]
【作用】上述の如く構成する本発明による水道水用の減
圧弁Ａは、減圧機構部ｖをカートリッジ状に収容するケ
ース１には、配管Ｂに対して接続させるための接続筒部
がなく、ケース１ごと、配管Ｂに接続するストップバル
ブｓｔｖ等の水道器具のボディ９０内に装入して、その
状態でストップバルブｓｔｖ等の水道器具のボディ９０
の接続筒部９１を配管Ｂに接続することで、配管Ｂに対
して接続した状態となることから、減圧弁Ａを、配管Ｂ
に接続するための配管工事の手間が省け、また、減圧弁
Ａを配設するためのスペースも不要となる。In the pressure reducing valve A for tap water according to the present invention configured as described above, the case 1 accommodating the pressure reducing mechanism v in the form of a cartridge has no connecting cylinder for connecting to the pipe B. Each case 1 is inserted into the body 90 of a water supply device such as a stop valve stv connected to the pipe B, and in that state, the body 90 of the water supply device such as the stop valve stv is inserted.
Is connected to the pipe B by connecting the connecting cylinder portion 91 to the pipe B, so that the pressure reducing valve A is connected to the pipe B
This eliminates the need for piping work for connecting the pressure reducing valve, and eliminates the need for a space for disposing the pressure reducing valve A.
【００１１】[0011]
【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。Next, an embodiment will be described in detail with reference to the drawings. In the drawings, the same reference numerals are used for components having the same effects as those of the conventional means.
【００１２】図５は本発明を実施せる水道水用の減圧弁
Ａの縦断側面図で、同図において、１はパイプ状のケー
ス、ｖはケース１内に収蔵した減圧機能部、２は減圧機
能部ｖの感圧体、３は同上機能部ｖの筒状弁、４は同上
機能部ｖの弁座、５は同上機能部ｖの弁座金具、６は同
上機能部ｖのバネ、８は同上機能部ｖのシール材を示
す。FIG. 5 is a vertical sectional side view of a pressure reducing valve A for tap water in which the present invention is carried out. In the same figure, reference numeral 1 denotes a pipe-shaped case, v denotes a pressure reducing function part stored in the case 1, and 2 denotes a pressure reducing function. Pressure sensing element of the function part v, 3 is a cylindrical valve of the function part v, 4 is a valve seat of the function part v, 5 is a valve seat fitting of the function part v, 6 is a spring of the function part v, 8 Denotes a sealing material for the functional part v.
【００１３】ケース１は金属材によりパイプ状に形成し
てあり、一方の軸端側に１次側ｗに対して連通させる開
口１ａが開放し、他方の軸端側には２次側に対して連通
させる開口１ｂが開放している。The case 1 is formed in a pipe shape from a metal material. An opening 1a communicating with the primary side w is opened at one shaft end side, and the opening 1a is formed at the other shaft end side with respect to the secondary side. The opening 1b for communicating with the opening is open.
【００１４】該ケース１には、それの内周側で、２次側
ｙと連通する開口１ｂの近傍部位に、感圧体２の２次側
ｙに対面する側の外端部と衝合する段部１ｃが、ケース
１の開口１ｂ側の端縁を折曲げ成形することで形成して
ある。また、この段部１ｃより１次側ｗに寄る部位に
は、感圧体２の外周側を摺動させる感圧体摺動部１ｄ
が、感圧体２の外径寸法に対応する内径に形成してあ
る。また、この感圧体摺動部１ｄの１次側ｗの端部に
は、感圧体２より大径の盤状に形成されるシール材８の
１次側の外端部を衝合させる段部１ｅが、該ケース１の
筒壁を拡径することで形成してある。また、この段部１
ｅよりも１次側ｗに寄る部位１ｆは、大径の盤状に形成
したシール材８の外径に対応する内径に形成してあり、
１次側ｗの端縁は、該ケース１の内部に減圧機能部ｖを
組込む前にあっては、シール材８の外径に対応させた前
記部位１ｆを延長した形態に成形してある。The case 1 has an inner peripheral side, which is in contact with an outer end of the pressure sensing element 2 on the side facing the secondary side y, in the vicinity of the opening 1b communicating with the secondary side y. The step 1c to be formed is formed by bending the edge of the case 1 on the side of the opening 1b. A pressure-sensitive body sliding portion 1d that slides on the outer peripheral side of the pressure-sensitive body 2 is provided at a portion closer to the primary side w than the step portion 1c.
Are formed on the inner diameter corresponding to the outer diameter of the pressure-sensitive body 2. The outer end of the primary side of the sealing member 8 formed in a disk shape having a diameter larger than that of the pressure sensitive body 2 is brought into abutment with the end of the primary side w of the pressure sensitive body sliding portion 1d. The step portion 1 e is formed by expanding the diameter of the cylindrical wall of the case 1. In addition, this step 1
A portion 1f closer to the primary side w than e is formed with an inner diameter corresponding to the outer diameter of the sealing material 8 formed in a large-diameter disc shape,
The edge of the primary side w is formed in a form in which the portion 1f corresponding to the outer diameter of the sealing material 8 is extended before the pressure reducing function portion v is incorporated into the case 1.
【００１５】感圧体２は、外径が前述のケース１の内周
側に成形した感圧体摺動部１ｄの内径に対応し、中心部
に透孔２０が開口するリング状に形成してあり、その中
心部の透孔２０には筒状弁３の基端側が嵌合して一体的
に速結している。The pressure-sensitive element 2 is formed in a ring shape having an outer diameter corresponding to the inner diameter of the pressure-sensitive element sliding portion 1d formed on the inner peripheral side of the case 1 and having a through hole 20 opened at the center. The base end of the cylindrical valve 3 is fitted into the through hole 20 at the center thereof, and is quickly connected integrally.
【００１６】筒状弁３は、筒壁の外周面が側面シール弁
となる通常の軸筒状のもので、基端側は前述した如く感
圧体２の中心部の透孔２０に一体的に連結し、１次側ｗ
に向う前端側の開口端縁３０は、弁座４と対向する弁部
に形成してある。この筒状弁３は、感圧体２を形成する
金属材で感圧体２と一体に連続するように形成する場合
がある。The cylindrical valve 3 is of a normal axial cylindrical shape in which the outer peripheral surface of the cylindrical wall is a side seal valve, and the base end is integrally formed with the through hole 20 at the center of the pressure sensing element 2 as described above. To the primary side w
The opening edge 30 on the front end side toward the front end is formed in a valve portion facing the valve seat 4. The tubular valve 3 may be formed of a metal material forming the pressure-sensitive body 2 so as to be integrally continuous with the pressure-sensitive body 2.
【００１７】シール材８は、外径がケース１の段部１ｅ
よりも１次側ｗに寄る部位１ｆの内径に対応する盤状に
形成され、かつ、中心部位には前後（軸方向）に透通す
る透孔８０が、前述の筒状弁３を摺動自在に嵌挿させる
よう開設してあり、後面側（２次側ｙ）の端面には、バ
ネ６の一端側を支承するバネ受座が形成してある。The sealing material 8 has an outer diameter of the step 1e of the case 1.
Is formed in a disk shape corresponding to the inner diameter of the portion 1f closer to the primary side w, and a through hole 80 which penetrates in the front and rear (axial direction) at the center portion slides on the cylindrical valve 3 described above. A spring seat for supporting one end of the spring 6 is formed on an end surface on the rear surface side (secondary side y).
【００１８】弁座４は、合成樹脂材等の柔軟な資材で成
形する通常のシートであり、前記筒状弁３の前端側の開
口端縁３０に対応するリング状に成形されて弁座金具５
に組付けてある。そして、その弁座金具５は、外径が前
述のケース１の１次側ｗによる部位１ｆの内径に対応す
る盤状に形成されていて、保持する弁座４の外周側に位
置する周縁部に通水路５０…が前後に透通して開設さ
れ、２次側ｙに向う後面側の外縁部には、後方に向けて
突出するリング状の支台５１が形設してある。The valve seat 4 is a normal sheet formed of a flexible material such as a synthetic resin material. The valve seat 4 is formed in a ring shape corresponding to the opening edge 30 on the front end side of the cylindrical valve 3 and is provided with a valve seat fitting. 5
It is attached to. The valve seat fitting 5 is formed in a disk shape having an outer diameter corresponding to the inner diameter of the portion 1 f defined by the primary side w of the case 1, and is located on the outer peripheral side of the valve seat 4 to be held. Are formed through the front and rear, and a ring-shaped support 51 protruding rearward is formed at the outer edge on the rear side facing the secondary side y.
【００１９】しかして、上述の感圧体２およびそれに連
結する筒状弁３および感圧体２を２次側ｙに押し出すバ
ネ６およびシール材８ならびに弁座４を保持する弁座金
具５らは、その順で、前述のケース１の内部に、そのケ
ース１の１次側ｗの開口１ａから装入していく。Thus, the above-described pressure-sensitive body 2, the cylindrical valve 3 connected thereto, the spring 6 for pushing the pressure-sensitive body 2 to the secondary side y, the sealing material 8, and the valve seat metal fitting 5 for holding the valve seat 4 are provided. Are inserted into the case 1 from the opening 1a on the primary side w of the case 1 in that order.
【００２０】そして、感圧体２の外端側が段部１ｃに衝
合し、シール材８の２次側ｙの外端側が段部１ｅに衝合
し、弁座金具５の支台５１が前記シール材８の１次側ｗ
の端面に衝合する状態となったところで、その状態に保
持せしめて、ケース１の１次側ｗの開口１ａの口縁部を
折曲げて弁座金具５の１次側ｗの端面にかしめ付け１
ｇ、前述の状態に固定する。これにより、感圧体２が、
２次側ｙの圧力の変動で、バネ６のバネ圧に制御され
て、その感圧体２に一体または一体的に連結する筒状弁
３を弁座４に対し進退させて、所定の減圧作動を行なう
減圧弁Ａが、組立てられる。Then, the outer end of the pressure sensing element 2 abuts the step 1c, the outer end of the secondary side y of the sealing material 8 abuts the step 1e, and the abutment 51 of the valve seat 5 is mounted. Primary side w of the sealing material 8
When it is in a state of abutting against the end face of the case 1, it is held in that state, and the edge of the opening 1a of the primary side w of the case 1 is bent and swaged to the end face of the primary side w of the valve seat fitting 5. Attachment 1
g, fixed in the state described above. Thereby, the pressure sensitive body 2
The change in the pressure on the secondary side y is controlled by the spring pressure of the spring 6 to move the cylindrical valve 3 integrally or integrally connected to the pressure-sensitive body 2 forward and backward with respect to the valve seat 4 to reduce the pressure to a predetermined pressure. An operating pressure reducing valve A is assembled.
【００２１】そして、このように組立てる減圧弁Ａは、
配管Ｂにストップバルブｓｔｖや水道メーターＭ等の水
道器具を接続するときに、その水道器具のボディ９０の
内腔に、図６に示している如く、減圧機能部ｖを内部に
組込んだケース１ごと、それの１次側ｗの開口１ａが、
配管Ｂ中の流れの上流側に向う姿勢として装入し、ケー
ス１の外周面とボディ９０の内周面との間には、予めボ
ディ９０の内周面に組込んでおくＯリング等のシール部
材９２・９２を介装して、水密・気密に保持せしめ、ボ
ディ９０の接続筒部９１・９１に配管Ｂを接続すること
で、配管Ｂに対し減圧弁Ａが組付けられた状態とする。The pressure reducing valve A thus assembled is
When connecting a water supply device such as a stop valve stv or a water meter M to the pipe B, a case in which a decompression function part v is incorporated inside the lumen of the body 90 of the water supply device as shown in FIG. Each one has an opening 1a on its primary side w,
An O-ring or the like previously installed on the inner peripheral surface of the body 90 is inserted between the outer peripheral surface of the case 1 and the inner peripheral surface of the body 90 between the outer peripheral surface of the case 1 and the inner peripheral surface of the body 90. A state in which the pressure reducing valve A is attached to the pipe B by connecting the pipe B to the connecting tubular portions 91 of the body 90 by interposing the seal members 92 and 92 to keep the water tight and airtight. I do.
【００２２】このとき、ボディ９０には、ケース１の外
周面に圧接していいくよう予め組込んでおくシール部材
９２・９２の中間に位置する部位に、ケース１に設けら
れる連通孔１０を介して出入りする空気をボディ９０の
外部に対し出入りさせる空気穴９３を設けておく。な
お、ボディ９０は、水道器具を例えば水道メーターＭと
するときは、それのボディとなる。At this time, through a communication hole 10 formed in the case 1, a portion of the body 90 is located in the middle of the seal members 92, which are previously assembled so as to be pressed against the outer peripheral surface of the case 1. An air hole 93 is provided for letting air that enters and exits from the outside of the body 90. Note that the body 90 is the body of the water appliance when the water appliance is, for example, a water meter M.
【００２３】[0023]
【発明の効果】以上説明したように、本発明による水道
水用の減圧弁Ａは、ケース１内に減圧機能部ｖを組込ん
でカートリッジ状に組立てて、配管Ｂに接続するストッ
プバルブｓｔｖ等の水道器具のボディ９０内にケース１
ごと嵌装することで組付けるようにしているのだから、
減圧弁Ａを配管Ｂに接続する配管工事の手間を省いて配
管Ｂに対し接続していけるようになり、しかも減圧弁Ａ
を外部に露出させず、かつ、配設のためのスペースを格
別に用意することなく配管Ｂに接続し得るようになる。As described above, the pressure reducing valve A for tap water according to the present invention is assembled into a cartridge by incorporating the pressure reducing function part v in the case 1, and the stop valve stv connected to the pipe B, etc. Case 1 in the body 90 of the water supply equipment
Because we are trying to assemble by fitting the whole,
The connection of the pressure reducing valve A to the pipe B can be omitted without the need for piping work for connecting the pressure reducing valve A to the pipe B.
Can be connected to the pipe B without exposing the outside to the outside, and without specially preparing a space for arrangement.
【図１】従前の手段による水道水用の減圧弁の縦断側面
図である。FIG. 1 is a longitudinal sectional side view of a pressure reducing valve for tap water by a conventional means.
【図２】先行手段による水道水用の減圧弁の縦断側面図
である。FIG. 2 is a longitudinal sectional side view of a pressure reducing valve for tap water according to a preceding means.
【図３】従前手段の減圧弁の配管に接続した状態の斜視
図である。FIG. 3 is a perspective view showing a state where the pressure reducing valve is connected to a pipe of a conventional means.
【図４】同上手段の減圧弁の配管に対する別の接続態様
の縦断側面図である。FIG. 4 is a vertical sectional side view of another connection mode of the same means to the piping of the pressure reducing valve.
【図５】本発明手段による水道水用の減圧弁の縦断側面
図である。FIG. 5 is a longitudinal sectional side view of a pressure reducing valve for tap water according to the means of the present invention.
【図６】同上減圧弁の配管に対し接続した状態の一部破
断した側面図である。FIG. 6 is a partially cutaway side view showing a state where the pressure reducing valve is connected to a pipe of the pressure reducing valve.
Ａ…水道水用の減圧弁、Ｂ…給水配管、Ｃ…給水栓、Ｄ
…間隙、Ｍ…メーター、ａ…ストップリング、ｂ…スペ
ーサー、ｃ…環状溝、ｓｔｖ…ストップバルブ、ｖ…減
圧機能部、ｗ…１次側、ｙ…２次側、ｚ…バネ室、１…
ケース、１ａ・１ｂ…開口、１ｃ…段部、１ｄ…感圧体
摺動部、１ｅ…段部、１ｆ…部位、１ｇ…かしめ付け、
１０…連通孔、１１・１２…接続筒部、２…感圧体、２
０…透孔、３…筒状弁、３ａ…筒壁、３０…開口端縁、
４…弁座、５…弁座金具、５０…通水路、５１…支台、
６…バネ、７…水密保持部材、８…シール材、８０…透
孔、９０…ボディ、９１…接続筒部、９２…シール部
材、９３…空気穴。A: pressure reducing valve for tap water, B: water supply pipe, C: water tap, D
... gap, M ... meter, a ... stop ring, b ... spacer, c ... annular groove, stv ... stop valve, v ... pressure reducing function part, w ... primary side, y ... secondary side, z ... spring chamber, 1 …
Case, 1a, 1b opening, 1c step, 1d pressure-sensitive body sliding part, 1e step, 1f part, 1g crimping,
DESCRIPTION OF SYMBOLS 10 ... Communication hole, 11 and 12 ... Connection cylinder part, 2 ... Pressure sensitive body, 2
0: through-hole, 3: cylindrical valve, 3a: cylindrical wall, 30: open edge,
4 ... valve seat, 5 ... valve seat fitting, 50 ... water passage, 51 ... abutment,
Reference numeral 6 denotes a spring, 7 denotes a watertight holding member, 8 denotes a sealing material, 80 denotes a through hole, 90 denotes a body, 91 denotes a connection tube portion, 92 denotes a sealing member, and 93 denotes an air hole.
Claims (2)
開口１ａを備え他方の軸端側に２次側ｙに対し連通さす
開口１ｂを具備するパイプ状のケース１を、給水配管Ｂ
に接続するストップバルブｓｔｖ等の水道器具のボディ
９０の内周面にシール部材９２を介して嵌合する軸筒状
に形成し、そのケース１内に、１次側に位置する弁座４
と、弁座４に対向して軸方向に動く筒状弁３と、軸芯心
部位に筒状弁３を摺動自在に貫通させてその筒状弁３の
外周側を１次側に気密に遮断するシール材８と、筒状弁
３と一体または一体的に連結して２次側の圧力の感知作
動により軸方向に動く感圧体２と、その感圧体２を２次
側に押し出すバネ６と、からなる一軸型減圧弁の減圧機
能部ｖを、収蔵せしめて、ストップバルブｓｔｖ等の水
道器具のボディ内に組込むカートリッジ状に組立てたこ
とを特徴とする水道水用の減圧弁。1. A pipe-shaped case 1 having an opening 1a communicating with a primary side w on one shaft end side and an opening 1b communicating with a secondary side y on the other shaft end side is supplied with water. Piping B
Of water equipment such as stop valve stv to be connected to
A cylindrical shaft fitted to the inner peripheral surface of the cylinder 90 via a seal member 92
And a valve seat 4 located on the primary side in the case 1.
And a cylindrical valve 3 that moves in the axial direction opposite to the valve seat 4, and the cylindrical valve 3 is slidably penetrated through the center of the shaft so that the outer peripheral side of the cylindrical valve 3 is hermetically sealed to the primary side. A pressure-sensitive body 2 that is integrally or integrally connected to the cylindrical valve 3 and moves in the axial direction by a pressure sensing operation on the secondary side, and the pressure-sensitive body 2 is moved to the secondary side. A pressure reducing valve for tap water, wherein a pressure reducing function part v of a uniaxial pressure reducing valve comprising a spring 6 to be pushed out is stored and assembled in a cartridge shape to be incorporated in a body of a water supply device such as a stop valve stv. .
通する開口１ｂの近傍部位に、感圧体２の２次側の外端
部と衝合する抜け止め用の段部１ｃを形成し、その段部
１ｃより１次側に寄る部位に、感圧板２の外径に対応す
る内径の感圧体摺動部１ｄを形成し、その摺動部１ｄよ
り１次側に寄る部位に、感圧板２より大径のシール材８
の２次側の外端部と衝合する段部１ｅを形成し、その段
部１ｅより１次側の部位１ｆの内径を前記シール材８の
外径に形成しておき、該ケース１内に、それの１次側の
開口１ａから、軸芯部位に筒状弁３が一体または一体的
に連結する感圧板２と、該感圧板２を２次側に押し出す
バネ６と、軸芯部に開設せる透孔８０により筒状弁３の
外周に気密に嵌合するシール材８と、筒状弁３に対向す
る弁座４を設けた弁座金具５とを、その順で装入して、
ケース１の１次側の開口１ａの口縁部のかしめ付けによ
りケース１内に組付けた請求項１記載の水道水用の減圧
弁。2. A case 1 is provided with a step portion for preventing the case 1 from coming into contact with an outer end on the secondary side of the pressure-sensitive body 2 at a position near the opening 1b communicating with the secondary side on the inner peripheral side thereof. 1c, and a pressure-sensitive body sliding portion 1d having an inner diameter corresponding to the outer diameter of the pressure-sensitive plate 2 is formed at a position closer to the primary side than the step portion 1c, and is formed on the primary side from the sliding portion 1d. A sealing material 8 larger in diameter than the pressure-sensitive plate 2
A step 1e which abuts with the outer end of the secondary side is formed, and the inside diameter of the portion 1f on the primary side from the step 1e is formed to the outside diameter of the sealing material 8, and the inside of the case 1 A pressure-sensitive plate 2 having a cylindrical valve 3 integrally or integrally connected to a shaft core portion from an opening 1a on the primary side thereof; a spring 6 for pushing the pressure-sensitive plate 2 to the secondary side; The sealing material 8 which fits air-tightly to the outer periphery of the cylindrical valve 3 by the through-hole 80 opened in the above, and the valve metal fitting 5 provided with the valve seat 4 facing the cylindrical valve 3 are inserted in this order. hand,
The pressure reducing valve for tap water according to claim 1, wherein the pressure reducing valve for tap water is assembled in the case 1 by caulking an edge portion of the opening 1 a on the primary side of the case 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11766894A JP2767550B2 (en) | 1994-05-06 | 1994-05-06 | Pressure reducing valve for tap water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11766894A JP2767550B2 (en) | 1994-05-06 | 1994-05-06 | Pressure reducing valve for tap water |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07302123A JPH07302123A (en) | 1995-11-14 |
| JP2767550B2 true JP2767550B2 (en) | 1998-06-18 |
Family
ID=14717331
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11766894A Expired - Fee Related JP2767550B2 (en) | 1994-05-06 | 1994-05-06 | Pressure reducing valve for tap water |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2767550B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100334378C (en) * | 2002-08-02 | 2007-08-29 | 兼工业株式会社 | Proportional pressure reducing valve in watersupply system |
| CN102537453A (en) * | 2012-01-04 | 2012-07-04 | 安徽博一流体传动股份有限公司 | Self-operated reducing valve |
| US20210404572A1 (en) * | 2018-04-17 | 2021-12-30 | Nelson Irrigation Corporation | Multi-function pressure regulation valve |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003075110A1 (en) | 2002-03-07 | 2003-09-12 | Toto Ltd. | Pressure reducing valve |
| JP7248270B2 (en) * | 2018-09-11 | 2023-03-29 | 株式会社ニッキ | regulator |
| CN111396609B (en) * | 2020-03-27 | 2023-10-31 | 华帝股份有限公司 | One-way relief valve with decompression assembly and water heater using same |
-
1994
- 1994-05-06 JP JP11766894A patent/JP2767550B2/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100334378C (en) * | 2002-08-02 | 2007-08-29 | 兼工业株式会社 | Proportional pressure reducing valve in watersupply system |
| CN102537453A (en) * | 2012-01-04 | 2012-07-04 | 安徽博一流体传动股份有限公司 | Self-operated reducing valve |
| CN102537453B (en) * | 2012-01-04 | 2013-07-03 | 安徽博一流体传动股份有限公司 | Self-operated reducing valve |
| US20210404572A1 (en) * | 2018-04-17 | 2021-12-30 | Nelson Irrigation Corporation | Multi-function pressure regulation valve |
| US11933408B2 (en) * | 2018-04-17 | 2024-03-19 | Nelson Irrigation Corporation | Multi-function pressure regulation valve |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07302123A (en) | 1995-11-14 |
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