JPH09203473A - Check valve device - Google Patents
Check valve deviceInfo
- Publication number
- JPH09203473A JPH09203473A JP18754096A JP18754096A JPH09203473A JP H09203473 A JPH09203473 A JP H09203473A JP 18754096 A JP18754096 A JP 18754096A JP 18754096 A JP18754096 A JP 18754096A JP H09203473 A JPH09203473 A JP H09203473A
- Authority
- JP
- Japan
- Prior art keywords
- valve body
- check valve
- flange
- water
- sealing
- 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 58
- 239000007779 soft material Substances 0.000 claims description 18
- 238000007789 sealing Methods 0.000 claims description 15
- 239000003566 sealing material Substances 0.000 claims description 11
- 239000013013 elastic material Substances 0.000 description 12
- 239000002184 metal Substances 0.000 description 5
- 230000002093 peripheral effect Effects 0.000 description 4
- POIUWJQBRNEFGX-XAMSXPGMSA-N cathelicidin Chemical compound C([C@@H](C(=O)N[C@@H](CCCNC(N)=N)C(=O)N[C@@H](CCCCN)C(=O)N[C@@H](CO)C(=O)N[C@@H](CCCCN)C(=O)N[C@@H](CCC(O)=O)C(=O)N[C@@H](CCCCN)C(=O)N[C@@H]([C@@H](C)CC)C(=O)NCC(=O)N[C@@H](CCCCN)C(=O)N[C@@H](CCC(O)=O)C(=O)N[C@@H](CC=1C=CC=CC=1)C(=O)N[C@@H](CCCCN)C(=O)N[C@@H](CCCNC(N)=N)C(=O)N[C@@H]([C@@H](C)CC)C(=O)N[C@@H](C(C)C)C(=O)N[C@@H](CCC(N)=O)C(=O)N[C@@H](CCCNC(N)=N)C(=O)N[C@@H]([C@@H](C)CC)C(=O)N[C@@H](CCCCN)C(=O)N[C@@H](CC(O)=O)C(=O)N[C@@H](CC=1C=CC=CC=1)C(=O)N[C@@H](CC(C)C)C(=O)N[C@@H](CCCNC(N)=N)C(=O)N[C@@H](CC(N)=O)C(=O)N[C@@H](CC(C)C)C(=O)N[C@@H](C(C)C)C(=O)N1[C@@H](CCC1)C(=O)N[C@@H](CCCNC(N)=N)C(=O)N[C@@H]([C@@H](C)O)C(=O)N[C@@H](CCC(O)=O)C(=O)N[C@@H](CO)C(O)=O)NC(=O)[C@H](CC=1C=CC=CC=1)NC(=O)[C@H](CC(O)=O)NC(=O)CNC(=O)[C@H](CC(C)C)NC(=O)[C@@H](N)CC(C)C)C1=CC=CC=C1 POIUWJQBRNEFGX-XAMSXPGMSA-N 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
Landscapes
- Details Of Valves (AREA)
- Lift Valve (AREA)
- Check Valves (AREA)
- Safety Valves (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は水栓等に用いられる
逆止弁装置に係り、特に２次側の昇熱、凍結に起因した
昇圧やウォーターハンマー等の高圧を１次側に逃がすリ
リーフ機構を備えた逆止弁装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a check valve device used for a faucet or the like, and more particularly to a relief mechanism for releasing high pressure due to temperature rise and freezing on the secondary side and high pressure such as water hammer to the primary side. The present invention relates to a check valve device equipped with.
【０００２】[0002]
【従来の技術】従来より、水栓には逆止弁装置が設けら
れており、水栓から給水源或いは給湯源側への水の逆流
が防止されている。図４は従来の逆止弁装置の一例を示
している。2. Description of the Related Art Conventionally, a check valve device is provided in a faucet to prevent backflow of water from the faucet to a water supply source or a hot water supply source side. FIG. 4 shows an example of a conventional check valve device.
【０００３】配管１０から水が通水される通水路１２
に、給水源又は給湯源から水栓本体側に向かう水の流れ
のみを許容し、逆方向の流れを阻止する逆止弁装置１４
が設けられている。A water passage 12 through which water flows from the pipe 10.
In addition, the check valve device 14 that allows only the flow of water from the water supply source or the hot water supply source toward the faucet body side and blocks the flow in the opposite direction
Is provided.
【０００４】この逆止弁装置１４のスリーブ１６が有底
円筒形状のキャップ１８に螺着され、該キャップ１８が
ハウジング２２に螺着されている。The sleeve 16 of the check valve device 14 is screwed to a cap 18 having a bottomed cylindrical shape, and the cap 18 is screwed to a housing 22.
【０００５】この逆止弁装置１４は、スリーブ１６の内
側に配置された逆止弁体２４と、該逆止弁体２４を付勢
するバネ３４とからなる。この逆止弁体２４は、弁棒２
６と、該弁棒２６の一端側に保持されたＯリング２８と
を有している。該弁棒２６は、スリーブ１６に同軸的に
保持されたガイド部材３０に対して摺動可能に嵌合され
ている。The check valve device 14 comprises a check valve body 24 disposed inside the sleeve 16 and a spring 34 for urging the check valve body 24. This check valve body 24 is used for the valve rod 2
6 and an O-ring 28 held on one end side of the valve rod 26. The valve rod 26 is slidably fitted to a guide member 30 coaxially held by the sleeve 16.
【０００６】スリーブ１６の一端側に、テーパ状の弁座
部３２が設けられており、逆止弁体２４のＯリング２８
がこの弁座部３２に当接するようにバネ３４によって付
勢されている。A tapered valve seat portion 32 is provided on one end of the sleeve 16, and an O-ring 28 of the check valve body 24 is provided.
Is urged by a spring 34 so as to contact the valve seat portion 32.
【０００７】２次側に設けられた水栓が開栓されると、
該逆止弁体２４のＯリング２８が弁座部３２から離反
し、水が流れる。２次側から１次側への逆流は、逆止弁
体２４のＯリング２８が弁座部３２に着座することによ
り阻止される。When the faucet provided on the secondary side is opened,
The O-ring 28 of the check valve body 24 separates from the valve seat portion 32, and water flows. Reverse flow from the secondary side to the primary side is blocked by the O-ring 28 of the check valve body 24 seated on the valve seat portion 32.
【０００８】ところで、一般に湯水混合栓は給水管の途
中にこのような逆止弁装置が設けられ、水が給水管中を
逆流しないようにしているのであるが、この湯水混合栓
では、例えば給水弁を閉じ給湯弁を開けて湯のみをしば
らく吐出させていると、その熱が隔壁を通して湯水混合
栓内の水に伝達し、水温を上昇させ熱膨張を起こさせ
る。しかるに、この場合、湯水混合栓内の水は全閉状態
にある給水弁と前記逆止弁装置との間に閉じ込められ、
出口がないためその水圧が異常に上昇し、管壁或いはシ
ール部、逆止弁等を破壊してその機能を損ねたり、漏水
を起こさせ故障をもたらすおそれがあった。In general, a hot and cold water mixing tap is provided with such a check valve device in the middle of a water feeding pipe to prevent water from flowing back through the water feeding pipe. When only the hot water is discharged for a while by closing the valve and opening the hot water supply valve, the heat is transferred to the water in the hot and cold water mixing tap through the partition wall, raising the water temperature and causing thermal expansion. However, in this case, the water in the hot and cold water mixing valve is trapped between the water supply valve in the fully closed state and the check valve device,
Since there is no outlet, the water pressure rises abnormally, which may destroy the pipe wall, the seal portion, the check valve, etc., impairing its function, or causing water leakage and failure.
【０００９】また、逆止弁装置を設けることにより、水
栓閉止時にウォーターハンマーが惹起され易いといった
問題がある。Further, by providing the check valve device, there is a problem that a water hammer is easily caused when the faucet is closed.
【００１０】このような２次側の水の膨張による昇圧や
ウォーターハンマーが発生した場合に２次側から１次側
へ圧力を逃がすために、リリーフ機構を設けた逆止弁装
置が実開昭５５−３４０３６号公報や実公平５−１４０
５４号公報などに記載されている。In order to release the pressure from the secondary side to the primary side when a pressure rise or water hammer due to the expansion of water on the secondary side occurs, a check valve device provided with a relief mechanism is actually opened. 55-34036 gazette and Jpn.
54, etc.
【００１１】[0011]
【発明が解決しようとする課題】しかしながら、従来の
逆止弁装置のリリーフ機構は構造が複雑でコスト高であ
った。However, the structure of the relief mechanism of the conventional check valve device is complicated and the cost is high.
【００１２】本発明は、構成が簡便でありながら２次側
の昇圧を確実に１次側に逃がすことができる逆止弁装置
を提供することを目的とする。SUMMARY OF THE INVENTION It is an object of the present invention to provide a check valve device which has a simple structure and can surely release the boosting pressure on the secondary side to the primary side.
【００１３】[0013]
【課題を解決するための手段】本発明の逆止弁装置は、
弁座部と、該弁座部に対し２次側から着座する逆止弁体
と、該逆止弁体を着座方向に付勢する付勢部材とを有す
る逆止弁装置において、該逆止弁体は、フランジを一端
側に有する弁棒と、該弁棒に保持され前記弁座部に着座
する弁本体と、該弁棒に設けられており、該弁本体を前
記フランジとの間で挟持している鍔部とを備えてなり、
該弁本体と前記弁座部との間及び該弁本体と前記鍔部と
の間にはそれぞれシール用軟質材が介在されており、前
記フランジと前記弁本体との間は水が通過可能となって
いることを特徴とするものである。The check valve device of the present invention comprises:
A check valve device having a valve seat portion, a check valve body that is seated on the valve seat portion from a secondary side, and a biasing member that biases the check valve body in a seating direction. The valve body is provided on a valve rod having a flange at one end side, a valve body held by the valve rod and seated on the valve seat portion, and the valve rod, and the valve body is provided between the flange and the flange. It is equipped with a collar that is sandwiched,
A soft sealing material is respectively interposed between the valve body and the valve seat portion and between the valve body and the collar portion, and water can pass between the flange and the valve body. It is characterized by becoming.
【００１４】かかる本発明の逆止弁装置にあっては、逆
止弁体が弁座部に着座することにより２次側から１次側
への逆流が阻止される。In such a check valve device of the present invention, the check valve body is seated on the valve seat portion to prevent backflow from the secondary side to the primary side.
【００１５】この逆止弁体の着座状態において２次側が
過剰に昇圧すると、フランジが弁本体を弁座部に強力に
押し付け、弁座部に接する軟質材が厚みを減じるように
変形する。これにより、弁棒が１次側に若干移動し、こ
の弁棒に螺着された螺子部材が弁本体から離反するよう
に移動する。そうすると、フランジと弁本体との間が水
通過可能となっているため、２次側の水が該フランジと
弁本体との間を通過し、さらに弁本体と鍔部との間を通
過し、１次側へリークする。これによって、２次側の昇
圧を１次側へ逃がすことができる。When the secondary side excessively pressurizes in the seated state of the check valve body, the flange strongly presses the valve body against the valve seat portion, and the soft material in contact with the valve seat portion is deformed so as to reduce the thickness. As a result, the valve rod is slightly moved to the primary side, and the screw member screwed to the valve rod is moved away from the valve body. Then, since water can pass between the flange and the valve body, water on the secondary side passes between the flange and the valve body, and further passes between the valve body and the collar portion. Leak to the primary side. As a result, the boosting voltage on the secondary side can be released to the primary side.
【００１６】なお、本発明においては、弁本体は金属等
の硬質材よりなる芯板にゴム等の弾性材料を被覆したも
のであっても良く、全体としてゴム等で構成されたもの
であっても良い。In the present invention, the valve body may be a core plate made of a hard material such as metal coated with an elastic material such as rubber, and is made of rubber or the like as a whole. Is also good.
【００１７】本発明では、弁本体とフランジとの間に皿
バネやワッシャ等の部材が介在されていても良い。In the present invention, a member such as a disc spring or a washer may be interposed between the valve body and the flange.
【００１８】弁本体のフランジ対峙面が軟質材にて構成
されている場合、水の通過を許容する部材を弁本体とフ
ランジとの間に介在させるのが好ましい。When the flange facing surface of the valve body is made of a soft material, it is preferable to interpose a member that allows passage of water between the valve body and the flange.
【００１９】本発明においては、前記シール用軟質材
は、前記弁本体と前記弁座部との間の第１のシール用軟
質材と、前記弁本体と前記鍔部との間の第２のシール用
軟質材とからなり、該第１のシール用軟質材と第２のシ
ール用軟質材とが別体となっていても良い。この場合、
第２のシール用軟質材は第１のシール用軟質材よりも硬
度が高いことが好ましい。このようにすると、弁座部と
弁本体との間は逆流圧力が低いときでも十分な止水性を
発揮する。また、鍔部と弁本体との間は、２次側の過剰
昇圧が比較的低いときでも両者の間から１次側へ水がリ
ークするようになる。In the present invention, the soft sealing material is a first soft sealing material between the valve body and the valve seat portion, and a second soft material between the valve body and the collar portion. It may be composed of a soft sealing material, and the first soft sealing material and the second soft sealing material may be separate bodies. in this case,
It is preferable that the second sealing soft material has a hardness higher than that of the first sealing soft material. By doing so, sufficient water shutoff is exhibited between the valve seat portion and the valve body even when the backflow pressure is low. Further, between the collar portion and the valve body, water leaks from the two portions to the primary side even when the excessive pressure rise on the secondary side is relatively low.
【００２０】なお、第２のシール用軟質材は、弁体では
なく鍔部に設けられるのが好ましい。即ち、第２のシー
ル用軟質材に２次側からきわめて高い水圧が加えられた
場合であっても、第２のシール用軟質材を鍔部に設けて
おくと、この水圧は第２のシール用軟質材を鍔部に押し
付ける力として作用するようになり、第２のシール用軟
質材が鍔部から剥れることがない。The second soft material for sealing is preferably provided not on the valve body but on the flange portion. That is, even when a very high water pressure is applied to the second sealing soft material from the secondary side, if the second sealing soft material is provided in the collar portion, this water pressure is applied to the second sealing material. The soft material for sealing acts as a force to press it against the flange portion, and the second soft material for sealing does not come off from the flange portion.
【００２１】[0021]
【発明の実施の形態】以下、図面を参照して実施の形態
について説明する。図１は実施の形態に係る逆止弁装置
の全体構成を示す断面図、図２は図１の要部拡大図、図
３は２次側から１次側へ水圧を逃がしている状態を示す
断面図である。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a cross-sectional view showing an overall configuration of a check valve device according to an embodiment, FIG. 2 is an enlarged view of a main part of FIG. 1, and FIG. 3 shows a state in which water pressure is released from a secondary side to a primary side. FIG.
【００２２】この逆止弁装置３８は、ハウジング４０内
に配置された略円筒状のスリーブ４２を有する。このス
リーブ４２の一端面が弁座部４２ａとなっている。The check valve device 38 has a substantially cylindrical sleeve 42 arranged in a housing 40. One end surface of the sleeve 42 serves as a valve seat portion 42a.
【００２３】該ハウジング４０にパッキン４４を介して
短いカラム４６が当接され、袋ナット４８が締め込まれ
ることにより該カラム４６がハウジング４０に固定され
ている。A short column 46 is brought into contact with the housing 40 via a packing 44, and a cap nut 48 is tightened to fix the column 46 to the housing 40.
【００２４】スリーブ４２内に該スリーブ４２と同軸に
ガイド部材５０が配置され、リング５２によって保持さ
れている。このガイド部材５０に逆止弁体５４の金属
（なお、硬質な合成樹脂であっても良い。）製弁棒５６
が挿通されている。この弁棒５６の一端にはフランジ５
８が設けられている。この弁棒５６に環形状の弁本体６
０が外嵌されている。該弁本体６０とフランジ５８との
間に金属板（又は硬質合成樹脂板）よりなるワッシャ６
２が介在されている。弁棒５６の雄ネジ部５６ａに鍔部
としてのナット６４が締め込まれ、弁本体６０が該ナッ
ト６４とフランジ５８との間に挟持され、固定されてい
る。A guide member 50 is arranged in the sleeve 42 coaxially with the sleeve 42 and is held by a ring 52. The guide member 50 includes a valve rod 56 made of metal (which may be hard synthetic resin) of the check valve body 54.
Is inserted. The flange 5 is attached to one end of the valve rod 56.
8 are provided. An annular valve body 6 is attached to the valve rod 56.
0 is fitted. A washer 6 made of a metal plate (or a hard synthetic resin plate) between the valve body 60 and the flange 58.
2 is interposed. A nut 64 as a flange is fastened to the male screw portion 56a of the valve rod 56, and the valve body 60 is sandwiched and fixed between the nut 64 and the flange 58.
【００２５】この弁本体６０は、金属よりなる環形円板
状の芯板６０ａと、該芯板６０ａの両板面と外周面とを
覆うゴム等の弾性材料６０ｂとからなる。なお、この弾
性材料６０ｂをゴム製とする場合、加硫接着などにより
芯板６０ａに接合するのが好ましい。The valve body 60 is composed of an annular disc-shaped core plate 60a made of metal, and an elastic material 60b such as rubber for covering both plate surfaces and the outer peripheral surface of the core plate 60a. When the elastic material 60b is made of rubber, it is preferable to bond it to the core plate 60a by vulcanization adhesion or the like.
【００２６】弁棒５６の他端にはストッパ６６が固定さ
れており、該ストッパ６６と前記ガイド部材５０との間
に蓄力状態にて介装されたコイルバネ６８によって逆止
弁体５４が弁座部４２ａへの着座方向に付勢されてい
る。A stopper 66 is fixed to the other end of the valve rod 56, and the check valve body 54 is valved by a coil spring 68 interposed between the stopper 66 and the guide member 50 in a stored state. It is biased in the seating direction to the seat portion 42a.
【００２７】このように構成された逆止弁装置にあって
は、逆止弁体５４が弁座部４２ａに着座することにより
２次側Ｓ2 から１次側Ｓ1 への逆流が阻止される。In the check valve device constructed as described above, the check valve body 54 is seated on the valve seat portion 42a to prevent the reverse flow from the secondary side S 2 to the primary side S 1 . It
【００２８】この逆止弁体５４の着座状態において２次
側Ｓ2 が昇温やウォーターハンマーなどにより過剰に昇
圧すると、フランジ５８が弁本体６０を弁座部４２ａに
強力に押し付け、弾性材料６０ｂが厚みを減じるように
変形する。これにより、図３のように、弁棒５６に螺着
されたナット６４が弁本体６０から離反する。そうする
と、フランジ５８とワッシャ６２との間がメタルタッチ
となっており、封水性が乏しいため、２次側Ｓ2 の水が
該フランジ５８とワッシャ６２との間を通過し、さらに
弁本体６０とナット６４との間の隙間を通過し、１次側
Ｓ1 へリークする。これによって、２次側Ｓ2 の昇圧を
１次側Ｓ1 へ逃がすことができる。If the secondary side S 2 is excessively pressurized by a temperature rise or a water hammer in the seated state of the check valve body 54, the flange 58 strongly presses the valve body 60 against the valve seat portion 42a, and the elastic material 60b. Transforms to reduce its thickness. Thereby, as shown in FIG. 3, the nut 64 screwed to the valve rod 56 is separated from the valve body 60. Then, a metal touch is made between the flange 58 and the washer 62, and the water sealing property is poor, so that the water on the secondary side S 2 passes between the flange 58 and the washer 62, and further the valve body 60 It passes through the gap with the nut 64 and leaks to the primary side S 1 . This allows the boosting of the secondary side S 2 to be released to the primary side S 1 .
【００２９】このようにして２次側Ｓ2 の過大圧力が１
次側Ｓ1 へリークした後は、弾性材料６０ｂは図１，２
の元の形状に復帰する。In this way, the overpressure on the secondary side S 2 is 1
After leaking to the next side S 1 , the elastic material 60b is
It returns to its original shape.
【００３０】上記実施の形態では、弁本体６０は芯板６
０ａと弾性材料６０ｂとで構成されているが、全体がゴ
ム等で構成されていても良い。In the above embodiment, the valve body 60 is the core plate 6
0a and the elastic material 60b, but may be entirely made of rubber or the like.
【００３１】上記実施の形態は本発明の一例であり、本
発明は図示以外の形状の逆止弁装置にも適用できる。The above embodiment is an example of the present invention, and the present invention can be applied to a check valve device having a shape other than that shown in the drawings.
【００３２】図５，６はその一例を示すものであるが、
いずれの逆止弁装置３８Ａ，３８Ｂにおいても、２次側
Ｓ2 が過度に昇圧すると、弁本体６０が厚みを減じるよ
うに変形し、２次側Ｓ2 の水がフランジ５８とワッシャ
６２との間を通過し、さらに弁本体６０とナット６４と
の間の隙間を通過し、１次側Ｓ1 へリークする。これに
よって、２次側Ｓ2 の昇圧を１次側Ｓ1 へ逃がすことが
できる。FIGS. 5 and 6 show an example of the above.
In any one of the check valve devices 38A and 38B, when the secondary side S 2 is excessively increased in pressure, the valve body 60 is deformed so as to reduce the thickness, and the water on the secondary side S 2 is separated between the flange 58 and the washer 62. Through the gap, the gap between the valve body 60 and the nut 64, and leaks to the primary side S 1 . This allows the boosting of the secondary side S 2 to be released to the primary side S 1 .
【００３３】図５の７０はキャップ、７２はストレーナ
を示す。図５，６のその他の符号は図１〜３と同一又は
相当部材を示している。In FIG. 5, 70 is a cap, and 72 is a strainer. The other reference numerals in FIGS. 5 and 6 indicate the same or corresponding members as those in FIGS.
【００３４】図７は弁本体６０の２次側では弾性材料を
設けず、芯板６０ａが露出する構成とした実施の形態を
示す断面図である。FIG. 7 is a cross-sectional view showing an embodiment in which an elastic material is not provided on the secondary side of the valve body 60 and the core plate 60a is exposed.
【００３５】図７では、この弁本体６０とフランジ５８
との間に皿バネ８０を介在させている。（なお、皿バネ
の代わりにコイルバネ等の弾性体を用いても良い。）２
次側が過度に昇圧することにより、ナット６４が弁棒５
６と共に移動して弾性材料６０ｂから離反したときに
は、この皿バネ８０と芯板６０ａ及びフランジ５８との
間を水が通過する。In FIG. 7, the valve body 60 and the flange 58 are shown.
Belleville spring 80 is interposed between and. (Note that an elastic body such as a coil spring may be used instead of the disc spring.) 2
The nut 64 causes the valve rod 5 to
When it moves with 6 and separates from the elastic material 60b, water passes between the disc spring 80, the core plate 60a, and the flange 58.
【００３６】図８はさらに別の実施の形態に係る逆止弁
装置の断面図である。FIG. 8 is a sectional view of a check valve device according to still another embodiment.
【００３７】この実施の形態では、フランジ５８Ａを弁
棒５６Ａと別体としている。このフランジ５８Ａには凸
部８４が設けられ、この凸部８４の外周面に雄ネジが設
けられている。弁棒５６Ａには、この凸部に対応した凹
穴８６が設けられ、該凹穴８６の内周面に雌ネジが設け
られている。この凸部８４を凹穴８６にネジ込むことに
よりフランジ５８Ａが弁棒５６に固定されている。In this embodiment, the flange 58A is separate from the valve rod 56A. The flange 58A is provided with a convex portion 84, and the outer peripheral surface of the convex portion 84 is provided with a male screw. The valve rod 56A is provided with a concave hole 86 corresponding to this convex portion, and a female screw is provided on the inner peripheral surface of the concave hole 86. The flange 58A is fixed to the valve rod 56 by screwing the convex portion 84 into the concave hole 86.
【００３８】弁棒５６Ａには、ナット６４の代わりに鍔
部８８が該弁棒５６Ａと一体に設けられており、弁本体
６０は該鍔部８８とフランジ５８Ａとの間に皿バネ８０
を介して挟持されている。The valve rod 56A is provided with a flange portion 88 instead of the nut 64 integrally with the valve rod 56A, and the valve body 60 is provided with a disc spring 80 between the flange portion 88 and the flange 58A.
It is sandwiched through.
【００３９】図８のその他の構成は図７と同様であり、
同一符号は同一部分を示している。The other structure of FIG. 8 is the same as that of FIG.
The same reference numerals indicate the same parts.
【００４０】この図８の逆止弁装置においても、上記逆
止弁装置と同じく２次側Ｓ2 に過剰な昇圧が生じると、
フランジ５８Ａ及び弁棒５６Ａが後退し、鍔部８８が弾
性材料６０ｂから離反する。これにより、芯板６０ａと
弁棒５６Ａとの間の隙間を通って２次側Ｓ2 の水圧が１
次側Ｓ1 へリークする。Also in the check valve device of FIG. 8, when excessive pressure rise occurs on the secondary side S 2 as in the above check valve device,
The flange 58A and the valve rod 56A retract, and the collar portion 88 separates from the elastic material 60b. As a result, the water pressure on the secondary side S 2 passes through the gap between the core plate 60a and the valve rod 56A to 1
Leak to the next side S 1 .
【００４１】図９は、さらに異なる実施の形態に係る逆
止弁装置の断面図である。FIG. 9 is a sectional view of a check valve device according to still another embodiment.
【００４２】この実施の形態は、図８のものにおいて、
弾性材料６０ｂを第１のゴム９０と第２のゴム９２とに
代えたものである。第１のゴム９０は芯板６０ａに取り
付けられており、前記弾性材料６０ｂと同じく弁座部４
２ａに当接する。第２のゴム９２は鍔部８８に取り付け
られており、芯板６０ａに当接する。なお、第１のゴム
９０は芯板６０ａの周縁部にのみ設けられており、該第
１のゴム９０よりも中心側では芯板６０ａが露出してい
る。第２のゴム９２は、芯板６０ａのこの露出した部分
に当接する。This embodiment is similar to that shown in FIG.
The elastic material 60b is replaced with the first rubber 90 and the second rubber 92. The first rubber 90 is attached to the core plate 60a, and like the elastic material 60b, the valve seat portion 4 is provided.
2a. The second rubber 92 is attached to the flange portion 88 and abuts on the core plate 60a. The first rubber 90 is provided only on the peripheral portion of the core plate 60a, and the core plate 60a is exposed on the center side of the first rubber 90. The second rubber 92 contacts this exposed portion of the core plate 60a.
【００４３】この第２のゴム９２は第１のゴム９０より
もゴム硬度が高いものとなっている。The second rubber 92 has a rubber hardness higher than that of the first rubber 90.
【００４４】この図９の逆止弁装置においても、２次側
に過剰な昇圧が生じると、フランジ５８Ａ及び弁棒５６
Ａが後退する。そして、鍔部８８に設けられた第２のゴ
ム９２が芯板６０ａから離反する。これにより、芯板６
０ａと弁棒５６Ａとの間の隙間を通って２次側Ｓ2 の水
圧が１次側Ｓ1 へリークする。Also in the check valve device of FIG. 9, when excessive pressure rises on the secondary side, the flange 58A and the valve rod 56 are
A retreats. Then, the second rubber 92 provided on the collar portion 88 separates from the core plate 60a. Thereby, the core plate 6
0a and the valve rod 56A through the gap, the water pressure on the secondary side S 2 leaks to the primary side S 1 .
【００４５】この実施の形態では、第１のゴム９０が第
２のゴム９２よりも軟質であり、逆流水圧が低くても第
１のゴム９０が全周にわたって弁座部４２ａに密着する
ため、止水性（逆流防止特性）が良好である。また、２
次側Ｓ2 で過剰な昇圧が生じて鍔部８８が後退した場
合、該鍔部８８に設けられた第２のゴム９２が高硬度で
あるところから該第２のゴム９２と芯板６０ａとの間に
すぐに隙間が発生するようになる。このため、２次側Ｓ
2 の過剰昇圧が小さい場合でも、この過剰昇圧を速やか
に１次側Ｓ1 へリークさせることができる。In this embodiment, the first rubber 90 is softer than the second rubber 92, and the first rubber 90 adheres to the valve seat portion 42a over the entire circumference even if the reverse water pressure is low. Good waterproofness (backflow prevention property). Also, 2
When excessive pressure is generated on the secondary side S 2 and the collar portion 88 is retracted, the second rubber 92 provided on the collar portion 88 has a high hardness, so that the second rubber 92 and the core plate 60a are Immediately a gap will be created between. Therefore, the secondary side S
Even if the excessive boost of 2 is small, this excessive boost can be promptly leaked to the primary side S 1 .
【００４６】なお、第２のゴム９２が鍔部８８に設けら
れているため、該第２のゴム９２に加えられる２次側Ｓ
2 からの水圧は該第２のゴム９２を鍔部８８に押し付け
る方向に作用する。従って、２次側Ｓ2 から高い水圧が
第２のゴム９２に加えられても、第２のゴム９２が鍔部
８８から剥れることがない。しかもこの実施の形態では
鍔部８８の芯板対向面に凹溝が周設され、この凹溝内に
第２のゴム９２が設けられているため、第２のゴム９２
の取付強度がきわめて高い。Since the second rubber 92 is provided on the flange 88, the secondary side S added to the second rubber 92 is
The water pressure from 2 acts in the direction of pressing the second rubber 92 against the flange 88. Therefore, even if a high water pressure is applied to the second rubber 92 from the secondary side S 2 , the second rubber 92 does not come off from the flange portion 88. Moreover, in this embodiment, since the concave groove is provided around the core plate facing surface of the collar portion 88, and the second rubber 92 is provided in the concave groove, the second rubber 92 is provided.
The mounting strength of is extremely high.
【００４７】[0047]
【発明の効果】以上の通り、本発明の逆止弁装置による
と、２次側に生じる過大な水圧を１次側に逃がすことが
でき、しかもこのリリーフ機構の構成が簡易であり、コ
ンパクトであると共に、逆止弁装置の製造コストが低
い。As described above, according to the check valve device of the present invention, the excessive water pressure generated on the secondary side can be released to the primary side, and the structure of this relief mechanism is simple and compact. In addition, the manufacturing cost of the check valve device is low.
【図１】実施の形態に係る逆止弁装置の全体構成を示す
断面図である。FIG. 1 is a cross-sectional view showing an overall configuration of a check valve device according to an embodiment.
【図２】図１の要部拡大図である。FIG. 2 is an enlarged view of a main part of FIG.
【図３】２次側から１次側へ水圧を逃がしている状態を
示す断面図である。FIG. 3 is a cross-sectional view showing a state in which water pressure is released from the secondary side to the primary side.
【図４】従来例に係る逆止弁装置の全体構成を示す断面
図である。FIG. 4 is a sectional view showing an overall configuration of a check valve device according to a conventional example.
【図５】別の実施の形態に係る逆止弁装置の全体構成を
示す断面図である。FIG. 5 is a cross-sectional view showing the overall configuration of a check valve device according to another embodiment.
【図６】さらに別の実施の形態に係る逆止弁装置の全体
構成を示す断面図である。FIG. 6 is a sectional view showing an overall configuration of a check valve device according to still another embodiment.
【図７】異なる実施の形態に係る逆止弁装置の全体構成
を示す断面図である。FIG. 7 is a sectional view showing an overall configuration of a check valve device according to a different embodiment.
【図８】さらに異なる実施の形態に係る逆止弁装置の全
体構成を示す断面図である。FIG. 8 is a cross-sectional view showing an overall configuration of a check valve device according to a further different embodiment.
【図９】さらに別の実施の形態に係る逆止弁装置の全体
構成を示す断面図である。FIG. 9 is a cross-sectional view showing an overall configuration of a check valve device according to yet another embodiment.
１４，３８，３８Ａ，３８Ｂ 逆止弁装置 ４０ ハウジング ４２ スリーブ ５０ ガイド部材 ５４ 逆止弁体 ５６ 弁棒 ５８ フランジ ６０ 弁本体 ６０ａ 芯板 ６０ｂ 弾性材料 ６２ ワッシャ ６４ ナット（鍔部） ６８ バネ ８０ 皿バネ ８４ 凸部 ８６ 凹穴 ８８ 鍔部 ９０ 第１のゴム ９２ 第２のゴム 14, 38, 38A, 38B Check valve device 40 Housing 42 Sleeve 50 Guide member 54 Check valve body 56 Valve rod 58 Flange 60 Valve body 60a Core plate 60b Elastic material 62 Washer 64 Nut (flange) 68 Spring 80 Disc spring 84 convex part 86 concave hole 88 collar part 90 first rubber 92 second rubber
Claims (8)
座する逆止弁体と、該逆止弁体を着座方向に付勢する付
勢部材とを有する逆止弁装置において、 該逆止弁体は、 フランジを一端側に有する弁棒と、 該弁棒に保持され前記弁座部に着座する弁本体と、 該弁棒に設けられており、該弁本体を前記フランジとの
間で挟持している鍔部とを備えてなり、 該弁本体と前記弁座部との間及び該弁本体と前記鍔部と
の間にはそれぞれシール用軟質材が介在されており、 前記フランジと前記弁本体との間は水が通過可能となっ
ていることを特徴とする逆止弁装置。1. A check valve device having a valve seat portion, a check valve body that is seated on the valve seat portion from a secondary side, and a biasing member that biases the check valve body in a seating direction. In the check valve body, the check valve body is provided with a valve rod having a flange at one end side, a valve body held by the valve rod and seated on the valve seat portion, and the check valve body is provided with the valve body. A flange portion sandwiched between the flange body and the flange, and a soft sealing material is interposed between the valve body and the valve seat portion and between the valve body and the flange portion, respectively. The check valve device is characterized in that water can pass between the flange and the valve body.
な芯板と、該芯板両板面を覆う軟質材とからなり、該弁
本体と前記フランジとの間に、この間の水の通過を許容
する部材が配置されていることを特徴とする逆止弁装
置。2. The valve body according to claim 1, wherein the valve body includes a hard core plate and a soft material that covers both surfaces of the core plate, and water between the valve body and the flange is provided. A check valve device in which a member that allows passage is arranged.
する部材はワッシャであることを特徴とする逆止弁装
置。3. The check valve device according to claim 2, wherein the member that allows the passage of water is a washer.
ランジへの対峙面は硬質面となっており、この弁本体の
フランジ対峙面と前記フランジとの間に、この間の水の
通過を許容する部材が配置されていることを特徴とする
逆止弁装置。4. The surface of the valve body facing the flange is a hard surface, and water is allowed to pass between the flange facing surface of the valve body and the flange. The check valve device is characterized in that a member to be arranged is arranged.
する部材はバネであることを特徴とする逆止弁装置。5. The check valve device according to claim 4, wherein the member allowing the passage of water is a spring.
は、前記弁本体と前記弁座部との間の第１のシール用軟
質材と、前記弁本体と前記鍔部との間の第２のシール用
軟質材とからなり、該第１のシール用軟質材と第２のシ
ール用軟質材とが別体となっていることを特徴とする逆
止弁装置。6. The soft material for sealing according to claim 1, wherein the soft material for sealing is a first soft material for sealing between the valve body and the valve seat portion, and the soft material for sealing is between the valve body and the flange portion. A non-return valve device comprising: the second soft sealing material, wherein the first soft sealing material and the second soft sealing material are separate bodies.
材は第１のシール用軟質材よりも硬度が高いことを特徴
とする逆止弁装置。7. The check valve device according to claim 6, wherein the second soft material for sealing has a hardness higher than that of the first soft material for sealing.
ール用軟質材は前記鍔部に取り付けられていることを特
徴とする逆止弁装置。8. The check valve device according to claim 6, wherein the second sealing soft material is attached to the collar portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18754096A JP3296194B2 (en) | 1995-11-20 | 1996-07-17 | Check valve device |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7-301291 | 1995-11-20 | ||
| JP30129195 | 1995-11-20 | ||
| JP18754096A JP3296194B2 (en) | 1995-11-20 | 1996-07-17 | Check valve device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09203473A true JPH09203473A (en) | 1997-08-05 |
| JP3296194B2 JP3296194B2 (en) | 2002-06-24 |
Family
ID=26504424
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18754096A Expired - Fee Related JP3296194B2 (en) | 1995-11-20 | 1996-07-17 | Check valve device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3296194B2 (en) |
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| WO2006103927A1 (en) * | 2005-03-29 | 2006-10-05 | Fujikura Rubber Ltd. | Relief valve |
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| JP2008075827A (en) * | 2006-09-25 | 2008-04-03 | Denso Corp | Fluid control valve |
| JP2008138732A (en) * | 2006-11-30 | 2008-06-19 | Piolax Inc | Relief valve |
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| KR100885947B1 (en) * | 2002-07-05 | 2009-03-03 | 주식회사 포스코 | Check valve with improved backflow blocking and cushioning |
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| CN102878303A (en) * | 2012-09-26 | 2013-01-16 | 宁波恒业制冷配件有限公司 | Sealing valve |
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| JP2015113936A (en) * | 2013-12-12 | 2015-06-22 | 日本ピラー工業株式会社 | Valve and bellows pump using the valve |
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| CN108131473A (en) * | 2018-01-31 | 2018-06-08 | 浙江神太太阳能股份有限公司 | The check valve of decompression function built in a kind of band |
| JP2019507300A (en) * | 2016-01-14 | 2019-03-14 | トゥ クム コーポレーション リミテッド | Check valve with reverse fluid supply function |
| JP2021067273A (en) * | 2019-10-17 | 2021-04-30 | ヤマホ工業株式会社 | Check valve |
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| JP3105775U (en) | 2004-06-08 | 2004-11-25 | 志賢 呉 | Mobile charger |
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1996
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|---|---|---|---|---|
| JP2001349454A (en) * | 2000-06-08 | 2001-12-21 | Miura Co Ltd | Check valve, and method for using the check valve |
| KR100885947B1 (en) * | 2002-07-05 | 2009-03-03 | 주식회사 포스코 | Check valve with improved backflow blocking and cushioning |
| WO2006103927A1 (en) * | 2005-03-29 | 2006-10-05 | Fujikura Rubber Ltd. | Relief valve |
| JP2007113753A (en) * | 2005-10-24 | 2007-05-10 | Kvk Corp | Check valve device and water supply equipment |
| JP2007321809A (en) * | 2006-05-30 | 2007-12-13 | Nidec Sankyo Corp | Hydroelectric generator |
| WO2007138968A1 (en) * | 2006-05-30 | 2007-12-06 | Nidec Sankyo Corporation | Hydroelectric power generator |
| JP2008075827A (en) * | 2006-09-25 | 2008-04-03 | Denso Corp | Fluid control valve |
| JP2008138732A (en) * | 2006-11-30 | 2008-06-19 | Piolax Inc | Relief valve |
| KR100843739B1 (en) * | 2007-03-08 | 2008-07-04 | 피엔케이산업(주) | Check Valve and Diesel Fuel Filter |
| JP2009204041A (en) * | 2008-02-27 | 2009-09-10 | Fuji Koki Corp | Check valve |
| JP2010084839A (en) * | 2008-09-30 | 2010-04-15 | Kyoritsu Gokin Co Ltd | Liquid leak prevention valve |
| CN102878303A (en) * | 2012-09-26 | 2013-01-16 | 宁波恒业制冷配件有限公司 | Sealing valve |
| JP2015113936A (en) * | 2013-12-12 | 2015-06-22 | 日本ピラー工業株式会社 | Valve and bellows pump using the valve |
| JP2015113937A (en) * | 2013-12-12 | 2015-06-22 | 日本ピラー工業株式会社 | Valve and bellows pump using the valve |
| CN104633192A (en) * | 2014-12-09 | 2015-05-20 | 浙江盾安阀门有限公司 | High-sensitivity overpressure protective device |
| JP2019507300A (en) * | 2016-01-14 | 2019-03-14 | トゥ クム コーポレーション リミテッド | Check valve with reverse fluid supply function |
| CN108131473A (en) * | 2018-01-31 | 2018-06-08 | 浙江神太太阳能股份有限公司 | The check valve of decompression function built in a kind of band |
| JP2021067273A (en) * | 2019-10-17 | 2021-04-30 | ヤマホ工業株式会社 | Check valve |
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| JP3296194B2 (en) | 2002-06-24 |
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