JP6145282B2 - Air valve-to-air valve coupling mechanism and air valve with sub valve - Google Patents

Air valve-to-air valve coupling mechanism and air valve with sub valve Download PDF

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JP6145282B2
JP6145282B2 JP2013029804A JP2013029804A JP6145282B2 JP 6145282 B2 JP6145282 B2 JP 6145282B2 JP 2013029804 A JP2013029804 A JP 2013029804A JP 2013029804 A JP2013029804 A JP 2013029804A JP 6145282 B2 JP6145282 B2 JP 6145282B2
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JP2014159820A (en
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敏雄 須永
敏雄 須永
実 海老沼
実 海老沼
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Maezawa Industries Inc
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本発明は、水等の流体が流れる管路等に設けられていて流体中の空気を排出したり吸入したりする空気弁と空気弁の連結機構、副弁付き空気弁に関する。   The present invention relates to an air valve-air valve coupling mechanism, which is provided in a conduit or the like through which a fluid such as water flows, and discharges or sucks air in the fluid, and an air valve with a sub valve.

従来、上水道等の液体が流れる管路に直交して設けた立ち上がり管に空気弁が連結されている。この空気弁は、管路内を流れる液体中に混入している空気等を排出したり、管路内の液体を排出する際に圧力調整のために管路内に空気を吸入したりするための空気弁や副弁付き空気弁が設けられている。   Conventionally, an air valve is connected to a rising pipe provided orthogonal to a pipeline through which a liquid such as waterworks flows. This air valve discharges air or the like mixed in the liquid flowing in the pipe line, or sucks air into the pipe line for pressure adjustment when discharging the liquid in the pipe line. The air valve and the air valve with an auxiliary valve are provided.

また、空気弁を管路の立ち上がり管に接続する構造として、例えば特許文献１に記載されたものが提案されている。この空気弁は、管路に設けた立ち上がり管のフランジ部と空気弁に設けたフランジ部とをボルトとナットで締結することで連結していた。
なお、公知の空気弁は、管路に水を満たす場合には、弁箱内の遊動弁体とフロート弁体が降下した開弁状態で管路中の大量の空気を大空気孔から排出し、空気弁内に水が満たされるとフロート弁体と遊動弁体が浮力で上昇して大小の空気孔が閉弁する。水の中に含まれる空気が浮上して空気弁内に溜まると水面と共にフロート弁体が降下して小空気孔が開弁し、小空気孔を通して排気される。そして、管路内の水を抜く場合には、空気弁の遊動弁体とフロート弁体が降下して大小の空気孔が開弁するため多量の空気が管路に吸入され、管路内の負圧を抑制する。 Further, as a structure for connecting an air valve to a rising pipe of a pipeline, for example, a structure described in Patent Document 1 has been proposed. In this air valve, the flange portion of the rising pipe provided in the pipeline and the flange portion provided in the air valve are connected by fastening with a bolt and a nut.
In the case of a known air valve, when water is filled in the pipe, a large amount of air in the pipe is exhausted from the large air hole with the floating valve body and float valve body in the valve box lowered. When the air valve is filled with water, the float valve body and the floating valve body rise by buoyancy and the large and small air holes are closed. When the air contained in the water rises and accumulates in the air valve, the float valve body descends together with the water surface to open the small air hole and exhaust through the small air hole. And when draining the water in the pipe line, the floating valve body of the air valve and the float valve body are lowered and the large and small air holes are opened, so a large amount of air is sucked into the pipe line, Suppresses negative pressure.

特開２０１２−５２５６６号公報JP 2012-52566 A

しかしながら、上述した空気弁と立ち上がり管のフランジ部同士をボルトで連結する構造では、フランジ部に形成したボルト穴とボルトとの間に遊びや公差を有している。そのため、地震が発生した際、振動によってボルトが緩んでしまい、フランジ面同士がずれてしまうためにフランジ部から漏水することがあった。特に空気弁は管路の上側に設置するため、管路よりも地震による振動が大きくフランジ部がずれ易いため、上述したようなズレや漏水が発生し易いという欠点があった。   However, in the structure in which the above-described air valve and the flange portion of the riser pipe are connected with bolts, there is play and tolerance between the bolt hole formed in the flange portion and the bolt. For this reason, when an earthquake occurs, the bolts are loosened by vibration and the flange surfaces are displaced from each other, so that water may leak from the flange portion. In particular, since the air valve is installed on the upper side of the pipe line, the vibration due to the earthquake is larger than that of the pipe line, and the flange portion is easily displaced.

本発明は、このような事情に鑑みてなされたものであって、地震等で振動しても空気弁と管路や副弁等の他の部材とがずれたり外れたりせず、漏液を抑制できるようにした空気弁とその連結機構及び副弁付き空気弁を提供することを目的とする。   The present invention has been made in view of such circumstances, and even if it vibrates due to an earthquake or the like, the air valve and other members such as a pipe line and a sub-valve do not shift or come off, and the liquid leakage It is an object of the present invention to provide an air valve that can be suppressed, a coupling mechanism thereof, and an air valve with a sub valve.

本発明による空気弁の連結機構は、弁箱に設けられていて他の部材の開口に連通する下部開口を備えた空気弁の連結機構であって、空気弁の下部開口と他の部材の開口とのいずれか一方の開口に設けられていて他方の開口内に進入して嵌合可能な突起部を備え、
突起部は、所定間隔を開けて形成された複数の爪部であることを特徴とする。
本発明による空気弁の連結機構によれば、空気弁の下部開口と他の部材の開口との一方に突起部を設けて他方の開口に嵌合させたので、地震等で空気弁が振動しても空気弁と他の部材とがずれたり外れたりすることを防止でき、空気弁と他の部材との連結部から漏液することを抑制できる。しかも、突起部を爪部としたことで、他方の開口内の爪部以外の部分での流体の流通を抑制しないため、流体の流れに対する抵抗が小さい。 An air valve coupling mechanism according to the present invention is a pneumatic valve coupling mechanism having a lower opening provided in a valve box and communicating with an opening of another member, the lower opening of the air valve and the opening of the other member. Provided with a protrusion that is provided in one of the openings and can be fitted into the other opening ,
The protrusions are a plurality of claw portions formed at predetermined intervals .
According to the coupling mechanism of the air valve according to the present invention, since the protrusion is provided on one of the lower opening of the air valve and the opening of the other member and fitted to the other opening, the air valve vibrates due to an earthquake or the like. However, it is possible to prevent the air valve and the other member from shifting or coming off, and it is possible to suppress leakage from the connecting portion between the air valve and the other member. In addition, since the protrusion is a claw portion, the flow of fluid in a portion other than the claw portion in the other opening is not suppressed, so that the resistance to the fluid flow is small.

本発明による空気弁は、弁箱に設けられていて他の部材の開口に連通する下部開口と、該下部開口に設けられていて他の部材の開口内に進入して嵌合可能な突起部とを備え、
突起部は、所定間隔を開けて形成された複数の爪部であることを特徴とする。
本発明による空気弁によれば、空気弁の下部開口から他の部材の開口に突出して嵌合する突起部を設けたので、地震等で空気弁が振動しても空気弁と他の部材とがずれたり外れたりすることを防止でき、空気弁と他の部材との連結部から漏液することを抑制できる。しかも、空気弁の下部開口に爪部を突出して形成して他の部材の開口に嵌合させることで、下部開口内の爪部以外の部分での流体の流通を抑制しないため、流体の流れに対する抵抗が小さい。 An air valve according to the present invention includes a lower opening provided in a valve box and communicating with an opening of another member, and a protrusion provided in the lower opening and capable of entering and fitting into the opening of the other member. It equipped with a door,
The protrusions are a plurality of claw portions formed at predetermined intervals .
According to the air valve of the present invention, since the protrusion that protrudes and fits into the opening of the other member from the lower opening of the air valve is provided, even if the air valve vibrates due to an earthquake or the like, Can be prevented from slipping or coming off, and leakage from the connecting portion between the air valve and another member can be suppressed. In addition, the claw portion is formed to protrude from the lower opening of the air valve and is fitted to the opening of another member, so that the flow of fluid in the portion other than the claw portion in the lower opening is not suppressed. Resistance to is small.

また、他の部材は、流体が流通する管路に設けた立ち上がり管または流体の連通路を開閉可能な副弁であってもよい。
空気弁は管路の上部に設置されるため地震等が発生すると管路より振れが大きいが、空気弁と立ち上がり管とがずれたり外れたりすることを突起部によって防止して漏液を抑制できる。 Further, the other member may be a sub-valve capable of opening and closing a riser pipe provided in a pipe line through which a fluid flows or a fluid communication path.
The air valve is installed in the upper part of the pipe, so if an earthquake occurs, the vibration will be larger than the pipe, but the protrusion can prevent the air valve and the rising pipe from shifting or coming off, thereby suppressing leakage. .

本発明による副弁付き空気弁は、弁箱の下部に設けられた下部開口を備えた空気弁と、下部開口に連通する流体の連通路を開閉可能な副弁体を有する副弁と、を備え、空気弁の下部開口と副弁の連通路の上部開口とのいずれか一方の開口に設けられていて他方の開口内に進入して嵌合可能な突起部を備え、突起部は、所定間隔を開けて形成された複数の爪部であることを特徴とする。
本発明によれば、副弁の副弁体で連通路を閉弁することで、空気弁内のフロート弁体等を調整することができ、しかも、地震等の際に、空気弁と副弁とがずれたり外れたりすることを突起部によって防止して漏液を抑制できる。しかも、突起部を爪部としたことで、他方の開口内の爪部以外の部分での流体の流通を抑制しないため、流体の流れに対する抵抗が小さい。 An air valve with an auxiliary valve according to the present invention includes an air valve having a lower opening provided at a lower portion of a valve box, and an auxiliary valve having an auxiliary valve body capable of opening and closing a fluid communication path communicating with the lower opening. Provided with a protrusion that is provided in one of the lower opening of the air valve and the upper opening of the communication passage of the sub valve and that can be fitted into the other opening. It is a plurality of claw portions formed at intervals .
According to the present invention, it is possible to adjust the float valve body and the like in the air valve by closing the communication passage with the sub valve body of the sub valve, and in addition, in the event of an earthquake or the like, the air valve and the sub valve It is possible to prevent the liquid from leaking by preventing the protrusions from coming off or coming off. In addition, since the protrusion is a claw portion, the flow of fluid in a portion other than the claw portion in the other opening is not suppressed, so that the resistance to the fluid flow is small.

また、副弁の下部開口に、流体が流通する管路の立ち上がり管に進入して嵌合可能な突起部が設けられていることが好ましい。
本発明による副弁付き空気弁は管路の端末に設置されるため、地震等が発生すると振れが大きいが、空気弁と副弁、そして副弁と管路をそれぞれ突起部によって嵌合して係止したから、空気弁や副弁が管路からずれたり外れたりすることを防止でき、フランジ部のボルト止め部が緩んだりずれたりすることを抑制して漏液を防止できる。 Moreover, it is preferable that the lower opening of the auxiliary valve is provided with a protrusion that can enter and fit into the rising pipe of the pipe through which the fluid flows.
Since the air valve with a secondary valve according to the present invention is installed at the end of the pipeline, the vibration is large when an earthquake or the like occurs, but the air valve and the secondary valve, and the secondary valve and the pipeline are respectively fitted by protrusions. Since they are locked, it is possible to prevent the air valve and the sub-valve from being displaced or detached from the pipeline, and it is possible to prevent leakage by suppressing the bolting portion of the flange portion from being loosened or displaced.

本発明による空気弁とその連結機構、そして副弁付き空気弁によれば、地震等で振動したとしても、突起部によって互いに嵌合して係止しているために、空気弁と他の部材または空気弁と副弁とが互いにずれたり外れたりしないように係止することができる。そのため、漏水等が発生することを確実に防止できる。しかも、突起部を爪部としたことで、他方の開口内の爪部以外の部分での流体の流通を抑制しないため、流体の流れに対する抵抗が小さい。 According to the air valve, the coupling mechanism thereof, and the air valve with a subvalve according to the present invention, even if it vibrates due to an earthquake or the like, the air valve and other members are engaged and locked together by the protrusions. Alternatively, the air valve and the sub-valve can be locked so that they do not shift or disengage from each other. Therefore, it is possible to reliably prevent water leakage and the like from occurring. In addition, since the protrusion is a claw portion, the flow of fluid in a portion other than the claw portion in the other opening is not suppressed, so that the resistance to the fluid flow is small.

本発明の第一実施形態による空気弁と立ち上がり管との連結機構を示す要部縦断面図である。It is a principal part longitudinal cross-sectional view which shows the connection mechanism of the air valve and riser pipe by 1st embodiment of this invention. 図１に示す空気弁を下方から見た斜視図である。It is the perspective view which looked at the air valve shown in FIG. 1 from the downward direction. 本発明の第二実施形態による空気弁と立ち上がり管との連結機構を示す要部縦断面図である。It is a principal part longitudinal cross-sectional view which shows the connection mechanism of the air valve and riser pipe by 2nd embodiment of this invention. 図３に示す空気弁を下方から見た斜視図である。It is the perspective view which looked at the air valve shown in FIG. 3 from the downward direction. 本発明の第三実施形態による副弁付き空気弁と立ち上がり弁との連結機構を示す要部縦断面図である。It is a principal part longitudinal cross-sectional view which shows the connection mechanism of the air valve with a subvalve by 3rd embodiment of this invention, and a rise valve. 図５に示す副弁の斜視図である。It is a perspective view of the subvalve shown in FIG. 本発明の第三実施形態による副弁付き空気弁の副弁と立ち上がり管の間に縦管を連結した要部縦断面図である。It is a principal part longitudinal cross-sectional view which connected the vertical pipe between the subvalve and riser pipe of the air valve with a subvalve by 3rd embodiment of this invention. 図７に示す縦管の断面図である。It is sectional drawing of the vertical pipe shown in FIG. 縦管の変形例を示す断面図である。It is sectional drawing which shows the modification of a vertical pipe. 縦管の他の変形例を示す断面図である。It is sectional drawing which shows the other modification of a vertical pipe.

以下、本発明の第一実施形態による空気弁の連結機構について図１及び図２を参照して説明する。
図１に示す空気弁１は、液体、例えば上水道等の水を流す管路２に直交させて設けた立ち上がり管３の上端部に連結されている。空気弁１は、略カップ形状を有している弁箱５の上端の開口に大空気孔６が形成された蓋体７が設置されて覆われ、弁箱５の下部には管路２に連通する下部開口８が形成されている。弁箱５内には、上端の開口部が大空気孔６に連通し、周囲の壁面には水の通過孔が形成された略有底筒状のフロート弁体ガイド１０が配設されている。フロート弁体ガイド１０の上端部は蓋体７に液密に連結されている。 Hereinafter, an air valve coupling mechanism according to a first embodiment of the present invention will be described with reference to FIGS. 1 and 2.
An air valve 1 shown in FIG. 1 is connected to an upper end portion of a rising pipe 3 provided perpendicularly to a pipe line 2 through which a liquid, for example, water such as waterworks flows. The air valve 1 is covered and covered with a lid body 7 having a large air hole 6 formed in an opening at the upper end of a valve box 5 having a substantially cup shape. A lower opening 8 that communicates is formed. In the valve box 5, a substantially bottomed cylindrical float valve body guide 10 having an opening at the upper end communicating with the large air hole 6 and a water passage hole formed in the surrounding wall surface is disposed. . The upper end portion of the float valve body guide 10 is liquid-tightly connected to the lid body 7.

フロート弁体ガイド１０内には例えば略球体状のフロート弁体１１が浮力によって昇降可能に配設されている。フロート弁体１１の上側には、中央に小空気孔１２が形成されていて浮力で昇降して大空気孔６を開閉可能な遊動弁体１３が配設されている。遊動弁体１３は中央が***する略山形に形成されており、その中央頂部に上下面を連通する小空気孔１２が形成されている。フロート弁体１１には、自身の浮力と空気弁１内の圧力と大気圧の差によって生じる押し上げ力が作用している。フロート弁体１１が昇降することで小空気孔１２を開閉可能である。
また、蓋体７には大空気孔６の周囲の裏面に遊動弁体１３の表面が当接して液密に封止するための大空気孔弁座１４がリング状に形成されている。 For example, a substantially spherical float valve body 11 is disposed in the float valve body guide 10 so as to be lifted and lowered by buoyancy. On the upper side of the float valve body 11, a small air hole 12 is formed in the center, and a floating valve body 13 capable of opening and closing the large air hole 6 by moving up and down by buoyancy is disposed. The floating valve body 13 is formed in a substantially mountain shape with the center raised, and a small air hole 12 communicating with the upper and lower surfaces is formed at the center top. A push-up force generated by the difference between the buoyancy of the float valve body 11 and the pressure in the air valve 1 and the atmospheric pressure acts on the float valve body 11. The small air hole 12 can be opened and closed by raising and lowering the float valve body 11.
In addition, a large air hole valve seat 14 is formed in a ring shape on the lid body 7 so that the surface of the floating valve body 13 abuts on the back surface around the large air hole 6 and is liquid-tightly sealed.

蓋体７の上部には例えばナットを介して凸曲面状のカバー１６が設置されており、空気弁１内に異物が入らないようになっている。また、空気弁１から水が噴出した場合には、飛散することを防止できるようになっている。カバー１６と蓋体７は周縁部の挿通孔を通してボルト１７とナット１８で連結されている。   A cover 16 having a convex curved surface is installed on the upper portion of the lid body 7 through a nut, for example, so that foreign matter does not enter the air valve 1. Further, when water is ejected from the air valve 1, it can be prevented from being scattered. The cover 16 and the lid body 7 are connected to each other by a bolt 17 and a nut 18 through an insertion hole at the peripheral edge.

小空気孔１２は遊動弁体１３の中央下部に嵌装された小空気孔弁座２０に形成され、その上部には弁座押さえ部材２１が装着されている。また、弁箱５の下部中央は縮径されており、縮径部に形成された下部開口８は小径の円筒面状に形成され、その内面には所定間隔（図では９０度間隔）で下方に突出する複数（図では４個）の爪部２３が突起部として形成されている。なお、下部開口８から突出する爪部２３の数は任意であるが、地震の振動の発生方向と水の流通量の阻害を抑制することを考慮すると、振動によるズレを防ぐためには少なくとも１２０度間隔で３個或いは９０度間隔で４個形成することが好ましい。他の例として、例えば６個、８個等の爪部２３を等間隔で形成するようにしてもよい。
下部開口８の周囲には例えば円板型のフランジ部２４が形成されており、フランジ部２４には周縁部にボルト１７とナット１８で締結するための挿通孔が所定間隔で形成されている。 The small air hole 12 is formed in a small air hole valve seat 20 fitted in the lower center of the floating valve body 13, and a valve seat holding member 21 is mounted on the upper part. The lower center of the valve box 5 is reduced in diameter, and the lower opening 8 formed in the reduced diameter portion is formed in a small-diameter cylindrical surface, and on the inner surface thereof at a predetermined interval (90 ° interval in the figure). A plurality of (four in the figure) claw portions 23 protruding in the shape are formed as protrusions. Although the number of the claw portions 23 protruding from the lower opening 8 is arbitrary, in consideration of suppressing the occurrence direction of the earthquake vibration and the inhibition of the water flow rate, at least 120 degrees in order to prevent the deviation due to the vibration. It is preferable to form three at intervals or four at intervals of 90 degrees. As another example, for example, six or eight claw portions 23 may be formed at equal intervals.
For example, a disc-shaped flange portion 24 is formed around the lower opening 8, and through holes for fastening with bolts 17 and nuts 18 are formed in the flange portion 24 at a predetermined interval.

また、管路２に一体形成されていて管路２から起立する立ち上がり管３の上端部には所定間隔で挿通孔を有するフランジ部２５が形成されている。立ち上がり管３のフランジ部２５と空気弁１のフランジ部２４とはガスケット２６を介して対向して当接されており、両フランジ部２４，２５はボルト１７を各挿通孔に挿入してナット１８で締結されている。しかも、空気弁１の下部開口８の内径と立ち上がり管３の内面３ａの内径とは同一寸法とされ、空気弁１の下部開口８に形成された複数の爪部２３は立ち上がり管３の内面３ａ内に延びて嵌合されている。この爪部２３の延出部分の外径は、立ち上がり管３の内径より例えば１〜５ｍｍ程度少し小さく形成されており、寸法誤差があっても空気弁１の設置を容易にすると共に、横ずれを防止できる範囲に形成されている。また、爪部２３の延出部分の長さは、例えば１０〜２０ｍｍ程度で、ガスケット２６の厚みやボルト１７が緩んで多少浮き上がっても爪部２３が係止した状態を維持できる長さに設定されている。   Further, a flange portion 25 having insertion holes at predetermined intervals is formed at the upper end portion of the rising tube 3 that is integrally formed with the conduit 2 and rises from the conduit 2. The flange portion 25 of the riser pipe 3 and the flange portion 24 of the air valve 1 are in contact with each other via a gasket 26. Both flange portions 24 and 25 are inserted into the respective insertion holes by inserting bolts 17 into the nuts 18. It is concluded with. Moreover, the inner diameter of the lower opening 8 of the air valve 1 and the inner diameter of the inner surface 3a of the rising pipe 3 are the same size, and the plurality of claw portions 23 formed in the lower opening 8 of the air valve 1 are formed on the inner surface 3a of the rising pipe 3. It extends in and is fitted. The outer diameter of the extended portion of the claw portion 23 is formed to be slightly smaller than the inner diameter of the riser tube 3 by, for example, about 1 to 5 mm. It is formed in a range that can be prevented. The length of the extended portion of the claw portion 23 is, for example, about 10 to 20 mm, and is set to a length that can maintain the state where the claw portion 23 is locked even if the thickness of the gasket 26 and the bolt 17 are loosened and slightly lifted. Has been.

本実施形態による空気弁１は上述の構成を備えているため、地震等で振動が発生したとしても、空気弁１と立ち上がり管３は爪部２３によって嵌合されているため、空気弁１の振れが抑制される。そのため、立ち上がり管３のフランジ部２５とボルト・ナット結合された空気弁１のフランジ部２４はフランジ面がずれたりせず、立ち上がり管３からの漏水を抑制できる。
しかも、空気弁１の下部開口８に爪部２３を設けた構成であるから、既存または既設の管路２の立ち上がり管３に空気弁１を取り付けできる。
また、空気弁１の下部開口８は立ち上がり管３の内面３ａと同一内径を有しており、爪部２３以外の部分では水の通過流量を阻害しないため、爪部２３による水の流通の阻害を最小限に抑えることができる。 Since the air valve 1 according to the present embodiment has the above-described configuration, even if vibration occurs due to an earthquake or the like, the air valve 1 and the rising pipe 3 are fitted by the claw portion 23. Swing is suppressed. Therefore, the flange portion 24 of the riser pipe 3 and the flange portion 24 of the air valve 1 coupled with bolts and nuts do not shift the flange surface, and water leakage from the riser pipe 3 can be suppressed.
And since it is the structure which provided the nail | claw part 23 in the lower opening 8 of the air valve 1, the air valve 1 can be attached to the riser pipe 3 of the existing or existing pipe line 2. FIG.
In addition, the lower opening 8 of the air valve 1 has the same inner diameter as the inner surface 3a of the riser 3 and does not hinder the flow rate of water in the portion other than the claw portion 23. Can be minimized.

なお、本発明は上述の第一実施形態による空気弁１に限定されることはなく、本発明の要旨を変更しない範囲で適宜の変更や置換等が可能であり、これらはいずれも本発明に含まれる。以下に、本発明の他の実施形態や変形例について説明するが、上述の実施形態と同一または同様な部分、部材には同一の符号を用いて説明を省略する。
例えば、図３及び図４は本発明の第二実施形態による空気弁３０を示すものであり、本第二実施形態による空気弁３０では、弁箱５の下部開口８には円筒状の円筒突起３１が突起部として形成され、この円筒突起３１は立ち上がり管３の内面３ａ内に延びて嵌合されている。この円筒突起３１の延出部分の外径は、立ち上がり管３の内径より例えば１〜５ｍｍ程度小さく形成されており、寸法誤差があっても空気弁３０の設置を容易にすると共に、横ずれを防止できる範囲に設定されている。また、円筒突起３１の延出部分の長さは例えば１０〜２０ｍｍ程度であり、ガスケット２６の厚みがあっても、或いは図示しないボルトが緩んで多少浮き上がったとしても、円筒突起３１が係止した状態が保てる長さに設定されている。その余の構成は第一実施形態による空気弁１と同一である。 The present invention is not limited to the air valve 1 according to the above-described first embodiment, and can be appropriately changed or replaced without departing from the gist of the present invention. included. Although other embodiments and modifications of the present invention will be described below, the same or similar parts and members as those of the above-described embodiment will be denoted by the same reference numerals, and description thereof will be omitted.
For example, FIGS. 3 and 4 show an air valve 30 according to a second embodiment of the present invention. In the air valve 30 according to the second embodiment, a cylindrical cylindrical protrusion is formed in the lower opening 8 of the valve box 5. 31 is formed as a protrusion, and this cylindrical protrusion 31 extends into the inner surface 3a of the rising tube 3 and is fitted therein. The outer diameter of the extending portion of the cylindrical projection 31 is formed to be, for example, about 1 to 5 mm smaller than the inner diameter of the riser tube 3, and even if there is a dimensional error, the air valve 30 can be easily installed and lateral displacement is prevented. The range is set as possible. Further, the length of the extending portion of the cylindrical protrusion 31 is, for example, about 10 to 20 mm, and the cylindrical protrusion 31 is locked even if the gasket 26 is thick or the bolt (not shown) is loosened and slightly lifted. It is set to a length that can be maintained. The rest of the configuration is the same as that of the air valve 1 according to the first embodiment.

本第二実施形態によれば、空気弁３０の下部開口８の円筒突起３１は全周に亘って立ち上がり管３の内面３ａに嵌合しているため、地震による振動がどの方向に生じてもフランジ部２４のズレを確実に抑制して漏水を防止できる。   According to the second embodiment, the cylindrical protrusion 31 of the lower opening 8 of the air valve 30 is fitted to the inner surface 3a of the rising pipe 3 over the entire circumference, so that any vibration caused by an earthquake occurs in any direction. The deviation of the flange portion 24 can be reliably suppressed to prevent water leakage.

次に図５及び図６により、本発明の第三実施形態による副弁付き空気弁３５について説明する。
本第三実施形態による副弁付き空気弁３５は、管路２の立ち上がり管３と空気弁３５との間に副弁３７を取り付けた構成を備えており、副弁３７は例えば空気弁３５の交換や空気弁３５内のフロート弁体１１や遊動弁体１３等の点検等を行うために設けている。本第三実施形態における空気弁３５は第一実施形態における空気弁１の下部開口８に爪部２３を設けない構成である。 Next, referring to FIGS. 5 and 6, the air valve 35 with a sub valve according to the third embodiment of the present invention will be described.
The air valve 35 with a sub valve according to the third embodiment includes a configuration in which a sub valve 37 is attached between the rising pipe 3 of the pipe line 2 and the air valve 35. It is provided for exchanging and inspecting the float valve element 11 and the floating valve element 13 in the air valve 35. The air valve 35 in the third embodiment has a configuration in which the claw portion 23 is not provided in the lower opening 8 of the air valve 1 in the first embodiment.

副弁３７は、弁箱３９内に副弁体４０として略球形のボール弁体を設けており、副弁体４０の略球形のボール弁体の上下方向に対向する面部分には水を流通させるための開口４０ａ、４０ｂが形成されている。そして、弁箱３９において水の挿通路を構成する内面の上部には略リング状の上部弁座４１が設置され、内面の下部には略リング状の下部弁座４２が設置されている。そして、弁箱３９の側部には挿通孔部４３が水平方向に形成され、この挿通孔部４３内には副弁体４０の側部に固定された弁軸４４が水平方向の軸線回りに回転可能に嵌挿されている。   The sub-valve 37 is provided with a substantially spherical ball valve body as the sub-valve element 40 in the valve box 39, and water is circulated on the surface portion of the sub-valve element 40 facing the vertical direction of the substantially spherical ball valve element. Openings 40a and 40b are formed. In the valve box 39, a substantially ring-shaped upper valve seat 41 is installed at the upper part of the inner surface constituting the water insertion passage, and a substantially ring-shaped lower valve seat 42 is installed at the lower part of the inner surface. An insertion hole 43 is formed in the side portion of the valve box 39 in the horizontal direction, and a valve shaft 44 fixed to the side portion of the sub-valve element 40 is provided in the insertion hole 43 around the horizontal axis. It is inserted so that it can rotate.

弁箱３９の挿通孔部４３と弁軸４４との間にはパッキンが嵌挿され、挿通孔部４３は弁軸４４を液密に回転可能に支持している。弁軸４４の他端は弁箱３９の外部に突出してレバー４６が取り付けられている。そのため、レバー４６を回転させることで弁軸４４を介して副弁体４０を水平軸線回りに回転させ、上下部弁座４１，４２に対して副弁体４０の開弁と閉弁を切り替えることができる。   A packing is inserted between the insertion hole 43 of the valve box 39 and the valve shaft 44, and the insertion hole 43 supports the valve shaft 44 in a fluid-tight manner. The other end of the valve shaft 44 protrudes outside the valve box 39 and a lever 46 is attached. Therefore, by rotating the lever 46, the auxiliary valve body 40 is rotated around the horizontal axis via the valve shaft 44, and the valve opening and closing of the auxiliary valve body 40 are switched between the upper and lower valve seats 41 and 42. Can do.

そして、副弁３７の弁箱３９において、上部弁座４１の上側には空気弁３５の下部開口８に対向する上部開口４７が形成され、この上部開口４７には所定間隔で複数（図では４個）の爪部４８が突起部として上方に突出して形成されていて、空気弁３５の下部開口８に嵌合されている。同様に、下部弁座４２の下側には立ち上がり管３の内面３ａに対向する下部開口４９が形成され、この下部開口４９には所定間隔で複数（図では４個）の爪部５０が下方に突出して形成されていて、立ち上がり管３の内面３ａに嵌合されている。
また、副弁３７の弁箱３９において、上部開口４７の外周には、空気弁３５のフランジ部２４に対向する上部フランジ部５２が形成され、下部開口４９の外周には立ち上がり管３のフランジ部２５に対向する下部フランジ部５３が形成されている。そして、これら上部フランジ部５２と空気弁３５のフランジ部２４、下部フランジ部５３と立ち上がり管３のフランジ部２５とはそれぞれガスケット２６を介して図示しないボルトとナットによって連結されている。爪部４８、５０は第一実施形態の爪部２３と同様のものであり、詳細な説明を省略する。 In the valve box 39 of the sub-valve 37, an upper opening 47 facing the lower opening 8 of the air valve 35 is formed above the upper valve seat 41, and a plurality (4 in the figure) are formed in the upper opening 47 at predetermined intervals. ) Claw portions 48 projecting upward as projections and are fitted into the lower opening 8 of the air valve 35. Similarly, a lower opening 49 facing the inner surface 3a of the rising pipe 3 is formed below the lower valve seat 42, and a plurality of (four in the figure) claw portions 50 are provided in the lower opening 49 at a predetermined interval. And is fitted to the inner surface 3 a of the riser 3.
Further, in the valve box 39 of the auxiliary valve 37, an upper flange portion 52 that faces the flange portion 24 of the air valve 35 is formed on the outer periphery of the upper opening 47, and the flange portion of the rising pipe 3 is formed on the outer periphery of the lower opening 49. A lower flange portion 53 is formed to face 25. The upper flange portion 52, the flange portion 24 of the air valve 35, the lower flange portion 53, and the flange portion 25 of the rising pipe 3 are connected by a bolt and a nut (not shown) via a gasket 26, respectively. The nail | claw parts 48 and 50 are the same as that of the nail | claw part 23 of 1st embodiment, and abbreviate | omit detailed description.

本第三実施形態による副弁付き空気弁３５は上述の構成を備えているため、副弁付き空気弁３５と立ち上がり管３は副弁３７の上下部に設けた爪部４８、５０によって互いに嵌合されているため、地震等で振動が発生したとしても空気弁３５と副弁３７の振れが抑制される。そのため、立ち上がり管３のフランジ部２５と副弁３７の下部フランジ部５３、そして、空気弁３５のフランジ部２４と副弁３７の上部フランジ部５２はいずれもフランジ面がずれたりせず、漏水事故を抑制できる。
しかも、副弁３７の上部開口４７と下部開口４９に爪部４８、５０をそれぞれ設けた構成であるから、既設の立ち上がり管３と空気弁３５との間に副弁３７を取り付けできる。また、副弁３７の上部開口４７と下部開口４９は爪部４８、５０以外の部分で水の通過流量を阻害しない。 Since the air valve with auxiliary valve 35 according to the third embodiment has the above-described configuration, the air valve with auxiliary valve 35 and the rising pipe 3 are fitted to each other by the claw portions 48 and 50 provided at the upper and lower portions of the auxiliary valve 37. Therefore, even if vibration occurs due to an earthquake or the like, the vibration of the air valve 35 and the auxiliary valve 37 is suppressed. Therefore, the flange portion 25 of the riser pipe 3 and the lower flange portion 53 of the subvalve 37, and the flange portion 24 of the air valve 35 and the upper flange portion 52 of the subvalve 37 do not deviate from each other, resulting in a water leakage accident. Can be suppressed.
Moreover, since the claw portions 48 and 50 are provided in the upper opening 47 and the lower opening 49 of the sub valve 37, the sub valve 37 can be attached between the existing riser pipe 3 and the air valve 35. Further, the upper opening 47 and the lower opening 49 of the auxiliary valve 37 do not impede the flow rate of water at portions other than the claw portions 48 and 50.

なお、上述の説明では、副弁３７の上下部開口４７，４９にそれぞれ爪部４８，５０を設けたが、これに代えて、副弁３７の下部開口４９にのみ爪部５０を設け、空気弁３５の下部開口８に副弁３７の上部開口４７に嵌合する爪部２３を設けてもよい。   In the above description, the claw portions 48 and 50 are provided in the upper and lower openings 47 and 49 of the auxiliary valve 37, respectively, but instead, the claw portion 50 is provided only in the lower opening 49 of the auxiliary valve 37 and air You may provide the nail | claw part 23 fitted to the upper opening 47 of the subvalve 37 in the lower opening 8 of the valve 35. FIG.

次に図７及び図８により、本発明の第四実施形態による副弁付き空気弁５５について説明する。
図７に示す第四実施形態による副弁付き空気弁５５は、上述した第三実施形態による副弁付き空気弁３５とほぼ同様な構成を有しており、同一の部分には同一の符号を用いて説明を省略し、相違点についてのみ説明する。
図７に示す副弁付き空気弁５５は、副弁５６の上部開口４７と下部開口４９には爪部４８、５０に代えて円筒突起３１と同様な円筒突起５７，５８がそれぞれ設けられている。そして、立ち上がり管３と副弁５６との間には縦管６０が連結されている。縦管６０は、例えば埋設位置が深い管路２に空気弁５５を接続すると、空気弁５５などのメンテナンスが難しいため、縦管６０を連結することによってメンテナンスできる程度の地表面近くの地中まで立ち上げるようにしたものである。 Next, an auxiliary valve-equipped air valve 55 according to a fourth embodiment of the present invention will be described with reference to FIGS.
The air valve 55 with a secondary valve according to the fourth embodiment shown in FIG. 7 has substantially the same configuration as the air valve 35 with a secondary valve according to the third embodiment described above, and the same reference numerals denote the same parts. The description will be omitted, and only the differences will be described.
7 is provided with cylindrical protrusions 57 and 58 similar to the cylindrical protrusion 31 in place of the claw portions 48 and 50 in the upper opening 47 and the lower opening 49 of the auxiliary valve 56, respectively. . A vertical pipe 60 is connected between the rising pipe 3 and the sub valve 56. For example, when the air valve 55 is connected to the pipe line 2 having a deep burial position, the vertical pipe 60 is difficult to maintain the air valve 55 and the like. It was designed to be launched.

縦管６０は、図８に示すように、筒状の管体６１の上端と下端にそれぞれ上部フランジ部６２と下部フランジ部６３を形成したものであり、管体６１の内面６１ａの下部には所定間隔で複数（例えば４個）の爪部６４が形成され、この爪部６４は立ち上がり管３の内面３ａ内に突出して嵌合されている。爪部６４は第一実施形態の爪部２３と同様のものであるため、詳細な説明を省略する。
また、副弁５６の下部開口４９に設けた円筒突起５８は縦管６０の管体６１の内面６１ａの上部に突出して嵌合され、上部開口４７に設けた円筒突起５７は空気弁５５の下部開口８内に突出して嵌合されている。円筒突起５７、５８は第二実施形態の円筒突起３１と同様のため、詳細な説明を省略する。 As shown in FIG. 8, the vertical tube 60 is formed by forming an upper flange portion 62 and a lower flange portion 63 at the upper end and the lower end of a tubular tube body 61, respectively, and below the inner surface 61 a of the tube body 61. A plurality of (for example, four) claw portions 64 are formed at a predetermined interval, and the claw portions 64 protrude and fit into the inner surface 3a of the rising tube 3. Since the nail | claw part 64 is the same as that of the claw part 23 of 1st embodiment, detailed description is abbreviate | omitted.
Further, the cylindrical protrusion 58 provided in the lower opening 49 of the sub valve 56 protrudes and fits above the inner surface 61 a of the pipe body 61 of the vertical pipe 60, and the cylindrical protrusion 57 provided in the upper opening 47 is the lower part of the air valve 55. Projecting into the opening 8 is fitted. Since the cylindrical protrusions 57 and 58 are the same as the cylindrical protrusion 31 of the second embodiment, detailed description thereof is omitted.

次に、縦管６０の変形例について図９及び図１０により説明する。
図９に示す縦管６６は管体６１の内面６１ａの下部だけでなく、上部にも爪部６７が所定間隔で複数（図では４個）形成されて、上方に突出している。この場合、副弁５６の下部開口４９には円筒突起５８は設けられておらず、爪部６７が副弁５６の下部開口４９に嵌合している。この爪部６７は第一実施形態の爪部２３と同様のものであるため、詳細な説明を省略する。
また、図１０に示す縦管６９は管体６１の内面６１ａの上部と下部にそれぞれ円筒突起７０，７１が突出して形成されているため、下部の円筒突起７１は立ち上がり管３の内面３ａに嵌合され、上部の円筒突起７０は副弁５６の下部開口４９に嵌合している。この円筒突起７０，７１は第二実施形態の円筒突起３１と同様のため、詳細な説明を省略する。
なお、空気弁１，３０を縦管６０，６６，６９を介して立ち上がり管３に連結する場合、または副弁付き空気弁３５、５５を縦管６０，６６，６９を介してまたは直接、立ち上がり管３に連結する場合、各連結部の突起部として爪部２３、４８、５０、６７と円筒突起３１，５７，５８を任意に組み合わせて形成し、嵌合するようにしてもよい。 Next, a modification of the vertical tube 60 will be described with reference to FIGS.
The vertical tube 66 shown in FIG. 9 has a plurality of claw portions 67 formed at predetermined intervals (four in the drawing) at the upper portion as well as the lower portion of the inner surface 61a of the tube body 61, and protrudes upward. In this case, the cylindrical protrusion 58 is not provided in the lower opening 49 of the auxiliary valve 56, and the claw 67 is fitted in the lower opening 49 of the auxiliary valve 56. Since the claw portion 67 is the same as the claw portion 23 of the first embodiment, detailed description thereof is omitted.
Further, since the vertical tube 69 shown in FIG. 10 is formed with cylindrical protrusions 70 and 71 protruding from the upper and lower portions of the inner surface 61a of the tube body 61, the lower cylindrical protrusion 71 is fitted to the inner surface 3a of the rising tube 3. The upper cylindrical projection 70 is fitted in the lower opening 49 of the sub valve 56. Since the cylindrical protrusions 70 and 71 are the same as the cylindrical protrusion 31 of the second embodiment, detailed description thereof is omitted.
When the air valves 1 and 30 are connected to the rising pipe 3 via the vertical pipes 60, 66, and 69, or the air valves 35 and 55 with the auxiliary valves are raised via the vertical pipes 60, 66, and 69 or directly. When connecting to the tube 3, the claw portions 23, 48, 50, 67 and the cylindrical protrusions 31, 57, 58 may be formed in any combination as protrusions of each connection portion, and may be fitted.

なお、上述した各実施形態では、管路２の立ち上がり管３は既設のものであるから、爪部や円筒突起等は形成されないものとしたが、新設の配管であれば立ち上がり管３に爪部や円筒突起等の突起部を設けることができる。
また、上述した実施形態では、縦管６０、６６、６９は副弁３７、５６と立ち上がり管３との間に連結するようにしたが、本発明はこのような構成に限定されるものではなく、空気弁１、３０、３５、５５に縦管６０，６６、６９を直接連結してもよく、その場合、いずれか一方に爪部２３、６７、または円筒突起３１、７０を形成すればよい。
さらに、上述した実施形態による空気弁１，３０，３５，５５は、遊動弁体１３を備えているが、遊動弁体１３を設けずにフロート弁体１１によって大空気孔６を開閉する空気弁に構成してもよい。 In each of the above-described embodiments, the rising pipe 3 of the pipe line 2 is an existing one, and thus the claw portion and the cylindrical protrusion are not formed. And protrusions such as cylindrical protrusions can be provided.
In the above-described embodiment, the vertical tubes 60, 66, and 69 are connected between the auxiliary valves 37 and 56 and the rising tube 3, but the present invention is not limited to such a configuration. The vertical pipes 60, 66, 69 may be directly connected to the air valves 1, 30, 35, 55. In this case, the claw portions 23, 67 or the cylindrical protrusions 31, 70 may be formed on either one of them. .
Further, the air valves 1, 30, 35, and 55 according to the above-described embodiment include the floating valve body 13, but the air valve that opens and closes the large air hole 6 using the float valve body 11 without providing the floating valve body 13. You may comprise.

１、３０、３５、５５ 空気弁
２ 管路
３ 立ち上がり管
５、３９ 弁箱
６ 大空気孔
８ 下部開口
１１ フロート弁体
１２ 小空気孔
１３ 遊動弁体
１４ 大空気孔弁座
２３、４８，５０、６４ 爪部
２４、２５、５２、５３、６２、６３ フランジ部
３１、５７，５８ 円筒突起
３７ 副弁
４０ 副弁本体
４７ 上部開口
４９ 下部開口
６０ 縦管
６１，６６、６９ 管体 1, 30, 35, 55 Air valve 2 Pipe line 3 Rising pipe 5, 39 Valve box 6 Large air hole 8 Lower opening 11 Float valve body 12 Small air hole 13 Free valve body 14 Large air hole valve seats 23, 48, 50 , 64 Claw parts 24, 25, 52, 53, 62, 63 Flange parts 31, 57, 58 Cylindrical protrusion 37 Sub valve 40 Sub valve main body 47 Upper opening 49 Lower opening 60 Vertical pipes 61, 66, 69 Tube

Claims (5)

弁箱に設けられていて他の部材の開口に連通する下部開口を備えた空気弁の連結機構であって、
前記空気弁の下部開口と前記他の部材の開口とのいずれか一方の開口に設けられていて他方の開口内に進入して嵌合可能な突起部を備え、
前記突起部は、所定間隔を開けて形成された複数の爪部であることを特徴とする空気弁の連結機構。 An air valve coupling mechanism provided in the valve box and having a lower opening communicating with the opening of another member,
Provided in any one of the opening of the lower opening of the air valve and the opening of the other member, and has a protrusion that can be fitted into the other opening ,
The air valve coupling mechanism according to claim 1, wherein the protrusions are a plurality of claw portions formed at predetermined intervals . 弁箱に設けられていて他の部材の開口に連通する下部開口と、該下部開口に設けられていて前記他の部材の開口内に進入して係合可能な突起部とを備え、
前記突起部は、所定間隔を開けて形成された複数の爪部であることを特徴とする空気弁。 A lower opening that is provided in the valve box and communicates with an opening of another member; and a protrusion that is provided in the lower opening and that can enter and engage with the opening of the other member ;
The air valve according to claim 1, wherein the protrusions are a plurality of claw portions formed at predetermined intervals . 前記他の部材は、流体が流通する管路に設けた立ち上がり管または流体の連通路を開閉可能な副弁体を有する副弁である請求項２に記載された空気弁。 3. The air valve according to claim 2, wherein the other member is a sub-valve having a sub-valve body capable of opening and closing a riser pipe provided in a conduit through which fluid flows or a fluid communication path. 弁箱の下部に設けられた下部開口を備えた空気弁と、
前記下部開口に連通する流体の連通路を開閉可能な副弁体を有する副弁と、を備え、
前記空気弁の下部開口と前記副弁の連通路の上部開口とのいずれか一方の開口に設けられていて他方の開口内に進入して嵌合可能な突起部を備え、
前記突起部は、所定間隔を開けて形成された複数の爪部であることを特徴とする副弁付き空気弁。 An air valve with a lower opening provided at the bottom of the valve box;
A sub-valve having a sub-valve body capable of opening and closing a fluid communication path communicating with the lower opening,
Providing a projection that is provided in any one of the lower opening of the air valve and the upper opening of the communication passage of the sub-valve and can enter and fit into the other opening ,
The air valve with a secondary valve , wherein the protrusions are a plurality of claw portions formed at predetermined intervals . 前記副弁の下部開口に、流体が流通する管路の立ち上がり管に進入して嵌合可能な前記突起部が設けられている請求項４に記載された副弁付き空気弁。 Wherein the lower opening of the auxiliary valve, the conduit by-valved air valve the protrusion fittable to proceed entering into the rising tube according to claim 4 provided that fluid flows.
JP2013029804A 2013-02-19 2013-02-19 Air valve-to-air valve coupling mechanism and air valve with sub valve Active JP6145282B2 (en)

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