JPH0543327Y2 - - Google Patents
Info
- Publication number
- JPH0543327Y2 JPH0543327Y2 JP1987097368U JP9736887U JPH0543327Y2 JP H0543327 Y2 JPH0543327 Y2 JP H0543327Y2 JP 1987097368 U JP1987097368 U JP 1987097368U JP 9736887 U JP9736887 U JP 9736887U JP H0543327 Y2 JPH0543327 Y2 JP H0543327Y2
- Authority
- JP
- Japan
- Prior art keywords
- valve
- valve body
- valve member
- tip
- support shaft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000012530 fluid Substances 0.000 claims description 32
- 239000013013 elastic material Substances 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 13
- 230000035939 shock Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
Landscapes
- Check Valves (AREA)
- Details Of Valves (AREA)
Description
【考案の詳細な説明】
（産業上の利用分野）
本考案は、冷温水、空気、ガスなど配管に用い
られる逆止め弁に関するものであり、特に、複数
個の開口部を有する先細篭形の弁本体と弾性材料
の帽子形の弁部材とを有する逆止め弁の改良に関
するものである。[Detailed description of the invention] (Field of industrial application) The present invention relates to a check valve used in piping such as cold and hot water, air, gas, etc. In particular, the present invention relates to a check valve that is used in piping such as cold and hot water, air, gas, etc. The present invention relates to an improvement in a check valve having a valve body and a cap-shaped valve member of an elastic material.
（従来の技術）
従来、この種のバルブは、第６図に示したよう
に構成されている。同図において、１０１は多数
個の開口部１０２を有する先細篭形の弁本体であ
り、１０３はゴムなどの弾性材料で作られた帽子
形の弁部材であつて、この弁部材１０３はその先
端部に埋め込まれたボルト１０４によつて弁本体
１０１の先端部に固定されている。(Prior Art) Conventionally, this type of valve has been constructed as shown in FIG. In the figure, 101 is a tapered basket-shaped valve body having a large number of openings 102, and 103 is a cap-shaped valve member made of an elastic material such as rubber. It is fixed to the tip of the valve body 101 by a bolt 104 embedded in the valve body 101.
第６図において、左方が流入側であつて、左方
から右方へ流れる流体は、弁本体１０１の開口部
１０２を通つて弁部材１０３を押し、弁部材１０
３を変形させて弁本体１０１と弁部材１０３の間
に透き間を作り、この透き間を通つて右方の流出
側へと流れる。なお、弁部材１０３を変形し易く
して流体抵抗を減らし圧力降下を少なくするため
に、弁部材１０３の内側壁面に畝や溝を設けて弁
部材１０３の厚さに変化を持たせ、弁部材１０３
を折り畳むように変形させるなどの工夫がなされ
ている。しかし、このことは逆に弁部材１０３を
破損し易くし、耐用年数を短くすることになる。 In FIG. 6, the left side is the inflow side, and the fluid flowing from the left side to the right pushes the valve member 103 through the opening 102 of the valve body 101, and pushes the valve member 103.
3 is deformed to create a gap between the valve body 101 and the valve member 103, and the water flows to the right outflow side through this gap. Note that in order to easily deform the valve member 103 to reduce fluid resistance and reduce pressure drop, ridges and grooves are provided on the inner wall surface of the valve member 103 to vary the thickness of the valve member 103. 103
Efforts have been made to deform it so that it can be folded. However, this makes the valve member 103 more likely to be damaged and shortens its service life.
次に、流入側の流体の圧力が流出側の流体の圧
力より低くなると、弁部材１０３は第６図の状態
に戻り、弁部材１０３が弁本体１０１の開口部１
０２を塞いで流体の右方から左方への逆流の流れ
を阻止する。なお、弁部材１０３が早く元の状態
に戻るようにするために、弁部材１０３の外端縁
に環状の突起部１０５を設けるなどの工夫がなさ
れている。 Next, when the pressure of the fluid on the inflow side becomes lower than the pressure of the fluid on the outflow side, the valve member 103 returns to the state shown in FIG.
02 to prevent the fluid from flowing backwards from the right to the left. In order to quickly return the valve member 103 to its original state, measures such as providing an annular protrusion 105 on the outer edge of the valve member 103 are taken.
しかし、第６図に示した従来のこの種のバルブ
では、ボルト１０４によつて弁本体１０１に固定
されている弁部材１０３の左方の先端部が変形し
難く、また、突起部１０５が設けてあるために弁
部材１０３の剛性が大で、この剛性が大な弁部材
１０３を変形させるために流体抵抗が大きく圧力
損失が大である欠点を有している。 However, in the conventional valve of this type shown in FIG. Because of this, the valve member 103 has a high rigidity, and in order to deform the valve member 103, which has a high rigidity, there is a disadvantage that fluid resistance is large and pressure loss is large.
また、弁部材１０３を容易に大きく変形し得る
ようにすると、弁部材１０３が第６図に示した元
の形状に戻るのが容易でなく、このため第６図に
おいて右方から左方へ流れる逆流の発生を直ちに
阻止することができず、逆流を生じてから急激に
逆流を阻止するためにウオーターハンマー現象が
起き、更に、このため弁部材１０３が破損し易
く、耐用年数が短くなる欠点を有している。 Further, if the valve member 103 is easily deformed to a large extent, it is difficult for the valve member 103 to return to the original shape shown in FIG. It is not possible to prevent the occurrence of backflow immediately, and a water hammer phenomenon occurs because the backflow is suddenly stopped after the backflow has occurred, and furthermore, this has the disadvantage that the valve member 103 is easily damaged and its service life is shortened. have.
このような従来のこの種のバルブが有する欠点
を改良するために考案されたのが、実公昭61−
20360号公報に記載された考案であり、その構造
を示したのが第７図である。同図において、１１
１は多数個の開口部１１２を有する先細篭形の弁
本体であり、１１３はゴムなどの弾性部材で作ら
れた帽子形の弁部材であつて、この弁部材１１３
はその先端部に埋め込まれたボルト１１４が弁本
体１１１の先端部に設けられた穴１１６を通つて
所定の距離だけ流体の流れ方向に移動できるよう
に設けられている。１１５は弁部材１１３の外端
縁に環状に設けられた突起部である。 In order to improve the drawbacks of conventional valves of this type, the Utility Model Publication Act of 1983-
This is a device described in Publication No. 20360, and FIG. 7 shows its structure. In the same figure, 11
1 is a tapered basket-shaped valve body having a large number of openings 112; 113 is a cap-shaped valve member made of an elastic material such as rubber;
is provided so that a bolt 114 embedded in its tip can move a predetermined distance in the fluid flow direction through a hole 116 provided in the tip of the valve body 111. Reference numeral 115 denotes an annular protrusion provided on the outer edge of the valve member 113.
この第７図に示した逆止め弁では、流入側であ
る左方から右方へ流れる流体が弁本体１１１の開
口部１１２を通つて弁部材１１３を押し、弁部材
１１３を右方へ移動させて弁本体１１１と弁部材
１１３の間に透き間を作り、この透き間を通つて
流体が流入側である左方から流出側である右方へ
流れる。次に、流入側の流体の圧力が流出側の流
体の圧力より低くなると、第７図の右方から左方
へ流体が流れる逆流が発生するが、この逆流が弁
部材１１３を左方へ押して第７図に示した状態に
戻り、弁部材１１３が弁本体１１１の開口部１１
２を塞いで、流体が流出側である右方から流入側
である左方へ流れる逆流を阻止する。このため、
この構造の逆止め弁は、先に第６図について述べ
た従来のこの種の逆止め弁に較べて、流体抵抗が
小さく圧力損失が少ない利点を持つている。 In the check valve shown in FIG. 7, fluid flowing from the left side to the right side on the inflow side pushes the valve member 113 through the opening 112 of the valve body 111, causing the valve member 113 to move to the right. A gap is created between the valve body 111 and the valve member 113, and through this gap, fluid flows from the left side, which is the inflow side, to the right side, which is the outflow side. Next, when the pressure of the fluid on the inflow side becomes lower than the pressure of the fluid on the outflow side, a backflow occurs in which the fluid flows from the right to the left in FIG. 7, but this backflow pushes the valve member 113 to the left. The valve member 113 returns to the state shown in FIG.
2 to prevent backflow of fluid from the right side, which is the outflow side, to the left side, which is the inflow side. For this reason,
The check valve of this structure has the advantage of lower fluid resistance and less pressure loss than the conventional check valve of this type described above with reference to FIG.
しかし、第７図に示した逆止め弁では、逆流が
生じた後でなければ、弁部材１１３を流入側であ
る左方に移動させて逆流防止をすることができな
い。しかも、右方に移動している時の弁部材１１
３は自重や流体の流れの影響で必ずしも流路と同
心に位置している訳ではないので、ボルト１１４
と弁本体１１１の先端部にある穴１１６との間に
こじれを生じ、ある程度の逆流が生じないと、弁
部材１０３を左方へ移動させることができない。
このため、逆流を生ずる前に、或いは逆流が生じ
たら直ちに逆流を防止することができないという
欠点を有している。更に、このようにある程度の
逆流が生じた後にこの逆流を阻止するために、激
しいウオーターハンマー現象が起き、このウオー
ターハンマー現象によつて弁部材１１３が破損し
易く耐用年数を短くする欠点を有している。 However, in the check valve shown in FIG. 7, the valve member 113 cannot be moved to the left, which is the inflow side, to prevent backflow until after backflow has occurred. Moreover, when the valve member 11 is moving to the right,
3 is not necessarily located concentrically with the flow path due to its own weight and the influence of fluid flow, so bolt 114
The valve member 103 cannot be moved to the left unless a twist occurs between the valve body 111 and the hole 116 at the tip of the valve body 111, and a certain amount of backflow occurs.
For this reason, it has the disadvantage that it is not possible to prevent backflow before it occurs or immediately after it occurs. Furthermore, after a certain amount of backflow has occurred, a severe water hammer phenomenon occurs in order to prevent this backflow, and this water hammer phenomenon tends to damage the valve member 113, which has the drawback of shortening its service life. ing.
（考案が解決しようとする問題点）
本考案は、上記のような、複数個の開口部を有
する先細篭形の弁本体と弾性材料の帽子形の弁部
材とを有する逆止め弁における次のような問題点
を解決しようとするものである。(Problems to be Solved by the Invention) The present invention solves the following problems in a check valve having a tapered basket-shaped valve body having a plurality of openings and a cap-shaped valve member made of an elastic material, as described above. This is an attempt to solve such problems.
(1) 流体抵抗が大きく、圧力降下が大きい。(1) Large fluid resistance and pressure drop.
(2) ウオーターハンマー現象が起きる。(2) Water hammer phenomenon occurs.
(3) 耐用年数が短い。(3) Short service life.
（問題点を解決するための手段）
本考案は、上記した問題点を解決するために、
次のように構成した。(Means for solving the problems) In order to solve the above problems, the present invention
It was configured as follows.
すなわち、斜面に複数個の開口部を有し先端部
を流路の流入側に向けて流路に固定した先細篭形
の弁本体と弁本体の内側に装着した弾性材料の帽
子形の弁部材とを有する逆止め弁において、上記
した弁本体の先端部の頂部に開口部を形成し、こ
の弁本体の流路の流出側位置に複数の流体用通口
を有する案内部材を該流路に対して固定し、この
案内部材の中央部の流路方向に支承軸を摺動自在
に装着し、この支承軸の先端部を弁部材の先端部
内側に固着し、この支承軸の途中に案内部材の一
部に係止する鍔部を形成すると共に、案内部材と
弁部材との間に装着したばね部材の弾発力によつ
て弁部材を弁本体に押圧するように構成した。 In other words, a tapered basket-shaped valve body having multiple openings on an inclined surface and fixed to the flow channel with its tip facing toward the inflow side of the flow channel, and a cap-shaped valve member made of an elastic material attached to the inside of the valve body. In the check valve, an opening is formed at the top of the distal end of the valve body, and a guide member having a plurality of fluid ports is provided in the flow path at a position on the outflow side of the flow path of the valve body. A support shaft is slidably mounted in the direction of the flow path in the center of this guide member, and the tip of this support shaft is fixed to the inside of the tip of the valve member, and guided midway on this support shaft. A flange is formed to engage a part of the member, and the valve member is pressed against the valve body by the elastic force of a spring member installed between the guide member and the valve member.
（作用）
本考案は、上記のように構成したので、流入側
よりの流体の流れは、先端部を流路の流入側に向
けた先細篭形の弁本体の複数個の開口部を通つて
弁本体の内側に装着した弾性材料の帽子形の弁部
材を押す。このため該弁部材は、案内部材と弁部
材との間に装着したばね部材を圧縮し、弁部材が
固着されている支承軸が案内部材を流路方向に摺
動しながら、流出側に移動する。このため、弁本
体と弁部材との間に透き間を生じ、流体は流出側
へと流れる。(Function) Since the present invention is constructed as described above, the fluid flows from the inflow side through the plurality of openings in the tapered basket-shaped valve body with the tip facing toward the inflow side of the flow path. A cap-shaped valve member made of elastic material is pressed inside the valve body. Therefore, the valve member compresses the spring member installed between the guide member and the valve member, and the support shaft to which the valve member is fixed moves toward the outflow side while sliding the guide member in the direction of the flow path. do. Therefore, a gap is created between the valve body and the valve member, and the fluid flows toward the outflow side.
次いで、流入側の圧力が流出側の圧力とほぼ同
じになつて流体の流れがほとんど止まるまでに、
弁部材はばね部材の弾発力によつて流入側に移動
して弁本体の開口部を塞ぐ。このため、流出側か
ら流入側への逆流は全く起きない。従つて、ウオ
ーターハンマー現象が起きない。 Then, until the pressure on the inlet side becomes almost the same as the pressure on the outlet side and the fluid flow almost stops,
The valve member moves toward the inflow side by the elastic force of the spring member and closes the opening of the valve body. Therefore, no backflow occurs from the outflow side to the inflow side. Therefore, no water hammer phenomenon occurs.
勿論、弁部材は十分な距離を移動して十分の透
き間を形成するので、流体抵抗が小さく、圧力降
下も少ない。また、弁部材の変形は少なく、ウオ
ーターハンマー現象が起きないので、弁部材が損
傷することがなく、耐用年数が長い。 Of course, the valve member travels a sufficient distance to create sufficient clearance so that there is less fluid resistance and less pressure drop. Furthermore, since the valve member is less deformed and no water hammer phenomenon occurs, the valve member is not damaged and has a long service life.
（実施例）
以下に、本考案の実施例を図面に従つて詳述す
る。(Example) Hereinafter, an example of the present invention will be described in detail with reference to the drawings.
第１図は本考案の逆止め弁の一実施例を示す縦
断面図、第２図は同上の他の実施例を示す縦断面
図、第３図は第２図の逆止め弁を分解した状態を
示す一部半截斜視図、第４図は第２図の逆止め弁
の作動状態を示す半截斜視図である。 Fig. 1 is a vertical sectional view showing one embodiment of the check valve of the present invention, Fig. 2 is a longitudinal sectional view showing another embodiment of the same as above, and Fig. 3 is an exploded view of the check valve of Fig. 2. FIG. 4 is a partially cutaway perspective view showing the operating state of the check valve of FIG. 2. FIG.
第１図乃至第４図において、１は円錐形又は楕
円錘形に形成した先細篭形の弁本体であつて、該
弁本体１は多数の開口部１ａを有し先端部を流入
側に向けている。なお、第１図乃至第４図は、い
ずれも流入側を左に、流出側を右にして描いてあ
る。 In FIGS. 1 to 4, reference numeral 1 denotes a tapered basket-shaped valve body formed into a conical or ellipsoidal conical shape, and the valve body 1 has a large number of openings 1a with its tip facing toward the inflow side. ing. Note that in each of FIGS. 1 to 4, the inflow side is drawn on the left and the outflow side is drawn on the right.
２は弾性材料の帽子形の弁部材であつて、該弁
部材２は弁本体１の内側に装着してある。３は支
承軸であり、４はばね部材、５は案内部材であつ
て、支承軸３の先端部３ａは弁部材２の先端部２
ａの内側に埋め込んで固定してあり、支承軸３の
他端部３ｂは案内部材５の案内孔５ａに流路方向
に摺動自在に装着してある。また、ばね部材４は
弁部材２の底部２ｂと案内部材５のばね受け部５
ｂの間に装着してある。更に、３ｃは弁部材が右
方へ移動した時にその移動距離を制限するために
案内部材５に当接する支承軸３の鍔部である。 Reference numeral 2 denotes a cap-shaped valve member made of an elastic material, and the valve member 2 is mounted inside the valve body 1. 3 is a support shaft, 4 is a spring member, and 5 is a guide member, the tip end 3a of the support shaft 3 is connected to the tip end 2 of the valve member 2.
The other end 3b of the support shaft 3 is fitted into the guide hole 5a of the guide member 5 so as to be slidable in the direction of the flow path. Further, the spring member 4 is connected to the bottom portion 2b of the valve member 2 and the spring receiving portion 5 of the guide member 5.
It is installed between b. Furthermore, 3c is a flange of the support shaft 3 that comes into contact with the guide member 5 in order to limit the distance of movement of the valve member when it moves to the right.
６は案内部材５を弁本体１より流出側において
弁本体１に対して固定している筐体であつて、該
筐体１は第１図に示す実施例では弁箱であり、第
２図乃至第４図に示す実施例では図に示したよう
な断面コ字形の環状の弾性材料のガスケツトであ
つて、この弾性材料のガスケツトである筐体６
は、配管の１対のフランジ継手の間に挟んで配管
を取付けられる。なお、第１図に示す実施例で
は、案内部材５は弁箱の一部に形成されている。 Reference numeral 6 denotes a housing that fixes the guide member 5 to the valve body 1 on the outflow side of the valve body 1, and the housing 1 is a valve box in the embodiment shown in FIG. In the embodiment shown in FIGS. 4 to 4, the housing 6 is a gasket made of an annular elastic material and has a U-shaped cross section as shown in the figure.
The pipe is attached between a pair of flange joints on the pipe. In the embodiment shown in FIG. 1, the guide member 5 is formed in a part of the valve box.
更に、１ｂは弁本体１の開口部１ａのうち弁本
体１の先端部に設けたものであり、５ｃは案内部
材５に設けられた流体用通口であり、１ｃは弁本
体１を筐体（弁箱又は弾性材料のガスケツト）６
で保持するためのフランジである。 Furthermore, 1b is an opening 1a of the valve body 1 provided at the tip of the valve body 1, 5c is a fluid passage provided in the guide member 5, and 1c is an opening 1a of the valve body 1 provided in the casing. (Valve box or gasket made of elastic material) 6
This is a flange for holding it in place.
次に、第１図乃至第４図に示した実施例の作用
について説明する。 Next, the operation of the embodiment shown in FIGS. 1 to 4 will be explained.
流入側すなわち図の左方より流体の流れは、弁
本体１の開口部１ａ及び１ｂを通つて弁部材２を
流出側すなわち図の右方に押す。このため弁部材
２は、ばね部材４を圧縮しながら支承軸３が案内
部材５によつて流路の方向に案内されて、第４図
に示した状態に移動する。このため、弁本体１と
弁部材２の間に透き間を生じ、流体は、流入側か
ら開口部１ａ及び１ｂを通り、更に透き間と流体
用通口５ｃを経て、流出側へ流れる。 The flow of fluid from the inflow side, that is, the left side in the drawing, pushes the valve member 2 through the openings 1a and 1b of the valve body 1 toward the outflow side, that is, to the right side in the drawing. Therefore, the valve member 2 moves to the state shown in FIG. 4, with the support shaft 3 being guided in the direction of the flow path by the guide member 5 while compressing the spring member 4. Therefore, a gap is created between the valve body 1 and the valve member 2, and fluid flows from the inflow side through the openings 1a and 1b, and further passes through the gap and the fluid passage 5c to the outflow side.
次いで、流入側の圧力P1が流出側の圧力P2と
ほぼ同じになつて流体の流れがほとんど止まるま
でに、弁部材２はばね部材４の弾発力によつて流
入側に移動して弁本体１の開口部１ａ及び１ｂを
塞ぐ。このため、流出側から流入側への逆流は全
く起きない。従つて、ウオーターハンマー現象は
全く起きない。 Next, the valve member 2 is moved toward the inflow side by the elastic force of the spring member 4 until the pressure P 1 on the inflow side becomes almost the same as the pressure P 2 on the outflow side and the flow of fluid almost stops. The openings 1a and 1b of the valve body 1 are closed. Therefore, no backflow occurs from the outflow side to the inflow side. Therefore, no water hammer phenomenon occurs.
このように、本考案の逆止め弁は、弁本体１と
弁部材２の間に十分に広い透き間を作り得るの
で、また開口部１ａは先端部の開口部１ｂまで加
えた十分に広い合計面積に開口部を形成し得るの
で、流体抵抗が小さく圧力降下が少ない。更に、
弁部材２は大きく変形せず、ウオーターハンマー
が起きないので、損傷することがなく、耐用年数
が長い。 In this way, the check valve of the present invention can create a sufficiently wide gap between the valve body 1 and the valve member 2, and the opening 1a has a sufficiently wide total area including the opening 1b at the tip. Since an opening can be formed in the pipe, the fluid resistance is small and the pressure drop is small. Furthermore,
Since the valve member 2 does not undergo large deformation and water hammer does not occur, it is not damaged and has a long service life.
第５図イ、第５図ロ及び第５図ハは、本考案の
実施態様の一例を説明するための半截断面図であ
り、これらの図面における符号は、第１図乃至第
４図における符号と同じで、第１図乃至第４図に
ない符号は以下の文中に示す通りである。 5A, 5B, and 5C are half-cut sectional views for explaining an example of an embodiment of the present invention, and the reference numerals in these drawings are the same as those in FIGS. 1 to 4. Similarly, the symbols not shown in FIGS. 1 to 4 are as shown in the following text.
この実施態様においては、円錐形に形成した先
細篭形の弁本体１のテーパーした中間胴部の一部
を外方に膨らましてあり、この部分を図面に１ｄ
の符号を付して示した。これに対して、帽子形の
弁部材の上記１ｄに対向する部分は膨らましてい
ない。 In this embodiment, a part of the tapered intermediate body of the tapered basket-shaped valve body 1 formed in a conical shape is bulged outward, and this part is 1d in the drawing.
It is shown with the symbol. On the other hand, the portion of the cap-shaped valve member facing 1d is not inflated.
第５図イは、流入側の流体が開口部１ａ及び１
ｂより流入して弁部材２がばね部材４を圧縮しな
がら流出側に移動した状態を示している。このと
き、流体は図に矢線で示したように流れる。 In Fig. 5A, the fluid on the inflow side is
The state in which the valve member 2 moves toward the outflow side while compressing the spring member 4 after the inflow from b is shown. At this time, the fluid flows as shown by the arrow in the figure.
また、第５図ロは、流入側の圧力が流出側の圧
力とほぼ同じになり、弁部材２がばね部材４の弾
発力よつて流入側に移動して弁本体１に押圧され
た状態を示している。この状態では、矢線で示し
たような逆流は生じない。 FIG. 5B shows a state in which the pressure on the inflow side is almost the same as the pressure on the outflow side, and the valve member 2 is moved toward the inflow side by the elastic force of the spring member 4 and is pressed against the valve body 1. It shows. In this state, backflow as shown by the arrow does not occur.
更に、第５図ハは、流入側の圧力が流出側の圧
力より!?かに低くなり、この差圧によつて弁部材
２のテーパーした中間胴部の一部が弁本体１の膨
らませた部分１ｄに当接するように変形した状態
を示している。このように弁部材２が変形するこ
とによつて、流入側の圧力が急激に降下したり、
流出側の圧力が急激に上昇したりした時に生ずる
圧力衝撃を軽減することができる。 Furthermore, as shown in FIG. It shows a state in which it is deformed so as to come into contact with the portion 1d. By deforming the valve member 2 in this way, the pressure on the inflow side may drop suddenly, or
It is possible to reduce the pressure shock that occurs when the pressure on the outflow side increases suddenly.
（考案の効果）
本考案の逆止め弁は、上述したように構成する
ことによつて、上述のように作用するので、次の
ように優れた効果が得られる。(Effects of the Invention) The check valve of the present invention operates as described above by being configured as described above, so that the following excellent effects can be obtained.
(1) 流体が流入側から流出側に流れる正流時に
は、十分に広い流過面積が得られ、流体抵抗が
小さく、圧力降下が少ない。特に、弁本体の頂
部開口部から、弁本体の内壁に圧力がまわりや
すいので、弁部材の移動が迅速に行われる。(1) When the fluid flows forward from the inflow side to the outflow side, a sufficiently large flow area is obtained, the fluid resistance is small, and the pressure drop is small. In particular, since pressure is likely to spread from the top opening of the valve body to the inner wall of the valve body, the valve member can be moved quickly.
(2) 流入側の圧力が流出側の圧力より低くなる逆
流時には、弁本体の頂部開口部よりまず圧力が
逃げ、正流がほとんど止まるまでに弁部材がば
ね部材の弾発力によつて復帰して弁本体の開口
部を塞ぐので、逆流が起きず、従つてウオータ
ーハンマー現象も起きない。(2) During backflow, where the pressure on the inflow side is lower than the pressure on the outflow side, the pressure first escapes from the top opening of the valve body, and by the time the forward flow has almost stopped, the valve member returns to its original position due to the elastic force of the spring member. Since the opening of the valve body is closed, no backflow occurs and therefore no water hammer phenomenon occurs.
(3) 弾性材料は支承軸により流路の軸心方向に確
実に移動し、また、弾性材料の弁部材はあまり
変形せず、上述のようにウオーターハンマーが
起きないので、弁部材が損傷せず、態様年数が
長い。(3) The elastic material is reliably moved in the axial direction of the flow path by the support shaft, and the valve member made of the elastic material does not deform much and water hammer does not occur as described above, so the valve member is not damaged. First, it has been around for a long time.
第１図は本考案の逆止め弁の一実施例を示す縦
断面図、第２図は同上の他の実施例を示す縦断面
図、第３図は第２図の逆止め弁を分解した状態を
示す一部半截斜視図、第４図は第２図の逆止め弁
の作動状態を示す半截斜視図、第５図イ、第５図
ロ、第５図ハは本考案の実施態様の一例を説明す
るための半截斜視図であり、第６図及び第７図は
それぞれ従来の逆止め弁の一例を示す縦断面図で
ある。
１……弁本体、１ａ……開口部、１ｂ……先端
部に設けた開口部、１ｄ……弁本体の膨らみ部、
２……弁座部材、３……支承軸、４……ばね部
材、５……案内部材、６……筐体。
Fig. 1 is a vertical sectional view showing one embodiment of the check valve of the present invention, Fig. 2 is a longitudinal sectional view showing another embodiment of the same as above, and Fig. 3 is an exploded view of the check valve of Fig. 2. FIG. 4 is a partially cutaway perspective view showing the operating state of the check valve of FIG. 2, and FIGS. It is a half-cut perspective view for explaining an example, and FIG. 6 and FIG. 7 are longitudinal sectional views each showing an example of a conventional check valve. 1...Valve body, 1a...Opening, 1b...Opening provided at the tip, 1d...Bulging part of the valve body,
2... Valve seat member, 3... Support shaft, 4... Spring member, 5... Guide member, 6... Housing.
Claims (1)
入側に向けて流路に固定した先細籠形の弁本体と
弁本体の内側に装着した弾性材料の帽子形の弁部
材とを有する逆止め弁において、上記した弁本体
の先端部の頂部に開口部を形成し、この弁本体の
流路の流出側位置に複数の流体用通口を有する案
内部材を該流路に対して固定し、この案内部材の
中央部の流路方向に支承軸を摺動自在に装着し、
この支承軸の先端部を弁部材の先端部内側に固着
し、この支承軸の途中に案内部材の一部に係止す
る鍔部を形成すると共に、案内部材と弁部材との
間に装着したばね部材の弾発力によつて弁部材を
弁本体に押圧するように構成したことを特徴とす
る逆止め弁。 A tapered cage-shaped valve body having a plurality of openings on a slope and fixed to a flow channel with its tip facing the inflow side of the flow channel, and a cap-shaped valve member made of an elastic material attached to the inside of the valve body. In the check valve, an opening is formed at the top of the distal end of the valve body, and a guide member having a plurality of fluid ports is provided at a position on the outflow side of the flow path of the valve body with respect to the flow path. fixedly, and a support shaft is slidably mounted in the flow path direction at the center of this guide member,
The tip of this support shaft is fixed to the inside of the tip of the valve member, and a flange is formed in the middle of this support shaft to lock onto a part of the guide member. A check valve characterized in that the valve member is pressed against the valve body by the elastic force of the spring member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987097368U JPH0543327Y2 (en) | 1987-06-26 | 1987-06-26 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987097368U JPH0543327Y2 (en) | 1987-06-26 | 1987-06-26 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS643164U JPS643164U (en) | 1989-01-10 |
| JPH0543327Y2 true JPH0543327Y2 (en) | 1993-11-01 |
Family
ID=31322772
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987097368U Expired - Lifetime JPH0543327Y2 (en) | 1987-06-26 | 1987-06-26 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0543327Y2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5210213B2 (en) * | 2009-03-23 | 2013-06-12 | スタンレー電気株式会社 | Cleaning device for vehicle lamp |
| KR101180001B1 (en) | 2010-09-06 | 2012-09-05 | 우신공업 주식회사 | Exhaust valve apparatus |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6018676A (en) * | 1983-07-13 | 1985-01-30 | Toshiba Corp | Check valve |
-
1987
- 1987-06-26 JP JP1987097368U patent/JPH0543327Y2/ja not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6018676A (en) * | 1983-07-13 | 1985-01-30 | Toshiba Corp | Check valve |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS643164U (en) | 1989-01-10 |
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