JP6145283B2 - Air valve, air valve with auxiliary valve, and their coupling mechanism - Google Patents

Air valve, air valve with auxiliary valve, and their coupling mechanism Download PDF

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JP6145283B2
JP6145283B2 JP2013029805A JP2013029805A JP6145283B2 JP 6145283 B2 JP6145283 B2 JP 6145283B2 JP 2013029805 A JP2013029805 A JP 2013029805A JP 2013029805 A JP2013029805 A JP 2013029805A JP 6145283 B2 JP6145283 B2 JP 6145283B2
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valve
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air valve
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arm portion
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JP2014159821A (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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Description

本発明は、水等の液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副弁付き空気弁、そしてこれらの連結機構に関する。   The present invention relates to an air valve, a subvalve-equipped air valve, and a connecting mechanism thereof, which are provided in a conduit or the like through which a liquid such as water flows and exhausts or sucks air in the fluid.

従来、上水道等の液体、例えば水が流れる管路に直交する立ち上がり管に空気弁が設けられている。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。   2. Description of the Related Art Conventionally, an air valve is provided in a rising pipe orthogonal to a pipe through which a liquid such as water supply, for example, water flows. The air valve is used to discharge air mixed in the liquid flowing in the pipe line, or to suck air into the pipe line for pressure adjustment when discharging the liquid in the pipe line. An air valve and an air valve with a secondary valve are provided.

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挿通孔を通して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。また、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吸入されて管路に流入され、管路内の負圧を抑制する。 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 riser pipe provided in the pipeline and the flange portion provided in the air valve are connected by fastening with bolts and nuts through the insertion holes.
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. Further, 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 and the float valve body of the air valve are lowered and the large and small air holes are opened, so a large amount of air is inhaled and flows into the pipe line. Suppresses negative pressure in the road.

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とナッ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振れて緩んでしまい、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 above-described structure in which the air valve and the flange portion of the riser pipe are connected to each other with bolts and nuts, there is play or tolerance between the bolt hole formed in the flange portion and the bolt. Therefore, when an earthquake occurs, the bolts are shaken and loosened due to vibrations, and the flange surfaces are displaced from each other. 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立ち上がり管や副弁等の他の部材とがずれたり外れたりせず、漏水を抑制できるようにした空気弁と副弁付き空気弁、及びこれらの連結機構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 riser pipe and a sub-valve do not shift or come off, thereby suppressing water leakage. It is an object of the present invention to provide an air valve, an air valve with a sub valve, and a coupling mechanism thereof.

本発明による空気弁は、弁箱から径方向外側に延びていて弁箱に連結される他の部材を囲うアーム部と、該アーム部に取り付けられて径方向に配設されていて他の部材を径方向内側に押圧する押圧部材とを備えたことを特徴とする。
本発明による空気弁によれば、弁箱の外側に設けたアーム部で他の部材を囲うと共に、押圧部材でアーム部を介して他の部材を径方向内側に押圧して固定するようにしたから、地震等で空気弁と他の部材とが互いに振動したと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抑制できて、空気弁と他の部材との連結部から漏液することを防止できる。 The air valve according to the present invention includes an arm portion that extends radially outward from the valve box and encloses another member connected to the valve box, and is attached to the arm portion and disposed in the radial direction. And a pressing member that presses inward in the radial direction .
According to the air valve of the present invention, the other member is surrounded by the arm portion provided outside the valve box, and the other member is pressed and fixed radially inward via the arm portion by the pressing member. Therefore, even if the air valve and other members vibrate with each other due to an earthquake or the like, it is possible to prevent the air valve and other members from shifting or coming off, and leakage from the connecting portion between the air valve and the other members. Can be prevented.

また、本発明による空気弁は、弁箱から径方向外側に延びていて前記弁箱に連結される他の部材を囲うアーム部と、該アーム部に取り付けられていて前記他の部材を押圧する押圧部材とを備え、前記押圧部材はナットに螺合した締結ボルトであることを特徴とする。
空気弁のアーム部材から締結ボルトを通して締め込むことで締結ボルトの先端によって他の部材を押圧し、ナットでその位置に固定することができる。 An air valve according to the present invention extends radially outward from the valve box and surrounds another member connected to the valve box, and is attached to the arm part and presses the other member. and a pressing member, wherein the pressing member is a fastening bolt screwed into the nut.
By tightening through the fastening bolt from the arm member of the air valve, the other member can be pressed by the tip of the fastening bolt and fixed at that position with the nut.

本発明による副弁付き空気弁は、弁箱から径方向外側に延びていて弁箱に連結される副弁を囲う第一アーム部と、該第一アーム部に取り付けられて径方向に配設されていて副弁を径方向内側に押圧する第一押圧部材とを備えた空気弁と、空気弁に連通する流体の連通路を有する副弁箱と、該副弁箱内に設けられていて連通路を開閉可能な副弁体と、副弁箱から径方向外側に延びていて副弁箱に連結される他の部材を囲う第二アーム部と、該第二アーム部に取り付けられて径方向に配設されていて他の部材を径方向内側に押圧する第二押圧部材とを備えた副弁と、を備えたことを特徴とする。
本発明による副弁付き空気弁によれば、弁箱の外側に設けた第一アーム部で副弁を囲うと共に、第一押圧部材で第一アーム部を介して副弁を径方向内側に押圧することで空気弁と副弁の一体性を確保し、更に副弁の外側に設けた第二アーム部で管路の立ち上がり管等からなる他の部材を囲うと共に、第二押圧部材で第二アーム部を介して他の部材を径方向内側に押圧することで副弁付き空気弁と他の部材とを一体に固定保持できる。そのため、地震等で空気弁と副弁と他の部材とが互いに振動したとしても、第一及び第二アーム部と第一及び第二押圧部材とで順次押圧することで、空気弁と副弁と他の部材との連結部が相互にずれたり外れたりすることを防止できて、空気弁と副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。 An air valve with a subvalve according to the present invention includes a first arm portion extending radially outward from a valve box and surrounding a subvalve connected to the valve box, and attached to the first arm portion and arranged in a radial direction. an air valve having a first pressing member for pressing the sub-valve radially inward is, in the sub-valve box having a communication passage of fluid in communication with the air valve, provided in the sub valve body A sub-valve body capable of opening and closing the communication passage, a second arm portion extending radially outward from the sub-valve box and surrounding other members connected to the sub-valve box, and a diameter attached to the second arm portion characterized in that and a sub-valve that includes a second pressing member for pressing are arranged in a direction other members radially inward.
According to the air valve with an auxiliary valve according to the present invention, the auxiliary valve is surrounded by the first arm portion provided outside the valve box, and the auxiliary valve is pressed radially inward by the first pressing member via the first arm portion. In this way, the air valve and the sub-valve are integrated, and the second arm provided outside the sub-valve surrounds other members such as the rising pipe of the pipe line, and the second pressing member By pressing the other member radially inward via the arm portion, the air valve with the sub valve and the other member can be integrally fixed and held. Therefore, even if the air valve, the sub valve, and other members vibrate due to an earthquake or the like, the air valve and the sub valve are sequentially pressed by the first and second arm portions and the first and second pressing members. It can prevent that the connection part with other members shifts and deviates from each other, and it can control that liquid leaks from the connection part of an air valve, a subvalve, and other members.

また、本発明による副弁付き空気弁は、弁箱から径方向外側に延びていて前記弁箱に連結される副弁を囲う第一アーム部と、該第一アーム部に取り付けられていて前記副弁を押圧する第一押圧部材とを備えた空気弁と、前記空気弁に連通する流体の連通路を有する副弁箱と、該副弁箱内に設けられていて前記連通路を開閉可能な副弁体と、前記副弁箱から径方向外側に延びていて前記副弁箱に連結される他の部材を囲う第二アーム部と、該第二アーム部に取り付けられていて前記他の部材を押圧する第二押圧部材とを備えた前記副弁とを備え、第一押圧部材と第二押圧部材はナットに螺合した締結ボルトであることを特徴とする。
空気弁の第一アーム部材から第一押圧部材の締結ボルトを締め込むことで締結ボルトの先端によって副弁を押圧し、ナットでその位置に固定し、更に副弁の第二アーム部材から第二押圧部材の締結ボルトを締め込むことで締結ボルトの先端によって他の部材を押圧し、ナットでその位置に固定することができる。 The air valve with a secondary valve according to the present invention includes a first arm part extending radially outward from the valve box and surrounding the secondary valve connected to the valve box, and attached to the first arm part. An air valve having a first pressing member that presses the sub valve, a sub valve box having a fluid communication path communicating with the air valve, and provided in the sub valve box, the communication path can be opened and closed. An auxiliary valve body, a second arm portion extending radially outward from the auxiliary valve box and surrounding another member connected to the auxiliary valve box, and the other arm portion attached to the second arm portion and a secondary valves provided with a second pressing member for pressing the member, the first pressing member and the second pressing member is characterized by a fastening bolt screwed into the nut.
By tightening the fastening bolt of the first pressing member from the first arm member of the air valve, the secondary valve is pressed by the tip of the fastening bolt, fixed at that position with the nut, and further from the second arm member of the secondary valve. By tightening the fastening bolt of the pressing member, the other member can be pressed by the tip of the fastening bolt and fixed at that position with the nut.

また、本発明による空気弁の連結機構では、上述した空気弁を有しており、他の部材は、空気弁に連通する流体の連通路を有する副弁箱と該副弁箱内に設けられていて連通路を開閉可能な副弁体とを備えた副弁、または流体が流通する管路に設けた立ち上がり管であり、副弁または立ち上がり管に設けたフランジ部を、押圧部材で押圧するようにしたことを特徴とする。
副弁または立ち上がり管に設けたフランジ部を押圧部材で押圧することで、押圧部分の外径が大きくなるため、アーム部と押圧部材による空気弁と他の部材との固定強度が高くなり、地震等による振れが生じても一体に強固に固定でき、フランジ部のズレによる漏液を防止できる。 Further, the air valve coupling mechanism according to the present invention includes the above-described air valve, and the other members are provided in the sub valve box having a fluid communication passage communicating with the air valve, and the sub valve box. And a riser pipe provided in a pipeline through which a fluid flows, or a flange provided in the secondary valve or the riser pipe is pressed by a pressing member. It is characterized by doing so.
By pressing the flange part provided on the sub-valve or riser pipe with the pressing member, the outer diameter of the pressing part increases, so the fixing strength between the air valve and other members by the arm part and the pressing member increases, and the earthquake Even if vibrations occur due to, for example, it can be firmly fixed integrally, and leakage due to the flange portion can be prevented.

本発明による副弁付き空気弁の連結機構は、上述した副弁付き空気弁を有しており、副弁には第一フランジ部が設けられ、他の部材は流体が流通する管路に設けた立ち上がり管であって第二フランジ部が設けられ、第一押圧部材で第一フランジ部を押圧し、第二押圧部材で第二フランジ部を押圧するようにしたことを特徴とする。
本発明によれば、副弁の第一フランジ部を空気弁の第一押圧部材で押圧固定し、立ち上がり管の第二フランジ部を副弁の第二押圧部材で押圧固定したから、管路に設けた立ち上がり管と副弁と空気弁を一体に固定保持でき、地震等で振動しても互いにずれたり外れたりすることがなく、第一または第二フランジ部のズレによる漏液を防止できる。 The connecting mechanism of the air valve with a subvalve according to the present invention has the air valve with a subvalve described above, the subvalve is provided with a first flange portion, and the other members are provided in a conduit through which fluid flows. The rising pipe is provided with a second flange portion, wherein the first pressing member presses the first flange portion and the second pressing member presses the second flange portion.
According to the present invention, the first flange portion of the auxiliary valve is pressed and fixed by the first pressing member of the air valve, and the second flange portion of the rising pipe is pressed and fixed by the second pressing member of the auxiliary valve. The provided riser pipe, sub valve and air valve can be fixed and held together, and even if they vibrate due to an earthquake or the like, they will not be displaced or detached from each other, and leakage due to displacement of the first or second flange portion can be prevented.

本発明による空気弁及びその連結機構によれば、空気弁のアーム部に設けた押圧部材によって他の部材を押圧固定できるから、地震等で振動したとしても、空気弁と他の部材とが互いにずれたり外れたりしないように固定することができ、漏液等が発生することを確実に防止できる。   According to the air valve and the coupling mechanism of the present invention, other members can be pressed and fixed by the pressing member provided on the arm portion of the air valve. Therefore, even if the air valve vibrates due to an earthquake or the like, the air valve and the other members are mutually connected. It can fix so that it may not slip | deviate or remove | deviate, and it can prevent reliably that liquid leakage etc. generate | occur | produce.

また、本発明による副弁付き空気弁及びその連結機構によれば、空気弁の第一アーム部に設けた第一押圧部材によって副弁を押圧固定でき、更に副弁の第二アーム部に設けた第二押圧部材によって他の部材を押圧固定できるから、地震等で振動したとしても、空気弁と副弁と他の部材とが互いにずれたり外れたりしないように固定することができ、漏液等が発生することを確実に防止できる。   Further, according to the air valve with a sub valve and the coupling mechanism thereof according to the present invention, the sub valve can be pressed and fixed by the first pressing member provided in the first arm portion of the air valve, and further provided in the second arm portion of the sub valve. Since other members can be pressed and fixed by the second pressing member, even if it vibrates due to an earthquake or the like, the air valve, the sub-valve and other members can be fixed so that they do not deviate from each other or come off. And the like can be reliably prevented.

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に示す空気弁と立ち上がり管との連結機構を示す斜視図である。It is a perspective view which shows the connection mechanism of the air valve and riser tube shown in FIG. 本発明の第二実施形態による副弁付き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 with a subvalve by 2nd embodiment of this invention, and a riser pipe. 図３に示す副弁付き空気弁と立ち上がり管との連結機構を示す斜視図である。It is a perspective view which shows the connection mechanism of the air valve with a subvalve shown in FIG. 3, and a riser pipe. 立ち上がり管と空気弁または副弁との間に連結可能な縦管の縦断面図である。It is a longitudinal cross-sectional view of the vertical pipe connectable between a riser pipe and an air valve or a subvalve.

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及び図２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に略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.
The air valve 1 shown in FIGS. 1 and 2 is connected to an upper end portion of a rising pipe 3 provided substantially perpendicular 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。
なお、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。 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.
The small air hole 12 is formed in a small air hole valve seat 20 fitted in the center lower portion of the floating valve body 13, and a valve seat holding member 21 is mounted on the upper portion.

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。
蓋体７の上部には、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。ナットを挟んで配設されたカバー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（図１では１つのボルト１７とナット１８のみを示す）。 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.
A convex curved cover 16 is installed on the top of the lid 7 so that no foreign matter enters 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 disposed with the nut interposed therebetween are connected to each other by a bolt 17 and a nut 18 through an insertion hole in the peripheral edge (only one bolt 17 and the nut 18 are shown in FIG. 1).

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ている。そして、下部開口８の外周面には径方向外側に延びる略円盤形状のフランジ部２３が形成され、更にその外側には、所定間隔で適宜数、例えば４本の略Ｌ字形状のアーム部２４が径方向外側に延びており、その先端部は下方に屈曲した屈曲部２４ａとされ、各屈曲部２４ａには挿通孔２４ｂが水平方向に形成されている。
フランジ部２３には所定間隔、例えば９０度間隔でボルト１７を挿通させるための複数個、例えば４個の挿通孔２３ａが上下方向に形成されている。なお、フランジ部２３の挿通孔２３ａとアーム部２４とは交互に等間隔（例えば４５°間隔）で周方向に互い違いに配設されていることが強度上好ましい。 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. A substantially disc-shaped flange portion 23 extending outward in the radial direction is formed on the outer peripheral surface of the lower opening 8, and an appropriate number of, for example, four, substantially L-shaped arm portions 24 are provided at predetermined intervals on the outer side. Is extended outward in the radial direction, and a tip portion thereof is a bent portion 24a bent downward, and an insertion hole 24b is formed in each bent portion 24a in the horizontal direction.
In the flange portion 23, a plurality of, for example, four insertion holes 23a for allowing the bolts 17 to be inserted at predetermined intervals, for example, 90 ° intervals, are formed in the vertical direction. In addition, it is preferable in terms of strength that the insertion holes 23a and the arm portions 24 of the flange portion 23 are alternately arranged in the circumferential direction alternately at equal intervals (for example, 45 ° intervals).

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、空気弁１のフランジ部２３の挿通孔２３ａに対向する位置に挿通孔を有するフランジ部２６が形成されている。立ち上がり管３のフランジ部２６と空気弁１のフランジ部２３とは好ましくは下部開口８及び内面３ａの間にガスケットを挟んで対向して配設されており、両フランジ部２３，２６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、好ましくは、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ている。 A flange portion 26 having an insertion hole at a position facing the insertion hole 23 a of the flange portion 23 of the air valve 1 is formed at the upper end portion of the rising pipe 3 that is integrally formed with the pipeline 2 and rises from the pipeline 2. Is formed. The flange portion 26 of the riser pipe 3 and the flange portion 23 of the air valve 1 are preferably disposed to face each other with a gasket interposed between the lower opening 8 and the inner surface 3a. Are inserted into each insertion hole and fastened with a nut 18.
Moreover, preferably, 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.

また、アーム部２４の屈曲部２４ａには、押圧部材として、例えば締結ボルト２８が挿通孔２４ｂを通してフランジ部２６の外周面２６ａを押圧固定しており、締結ボルト２８には屈曲部２４ａの前後にナット２９が螺着されている。少なくとも一方のナット２９はダブルナットにすることが好ましい。そして、締結ボルト２８を締め込むことで、空気弁１のアーム部２４と立ち上がり管３のフランジ部２６とを固定できる。
図１及び図２に示す締結ボルト２８は無頭ボルトであるが、有頭ボルトを用いてもよい。 In addition, as a pressing member, for example, a fastening bolt 28 presses and fixes the outer peripheral surface 26a of the flange portion 26 through the insertion hole 24b to the bending portion 24a of the arm portion 24, and the fastening bolt 28 is provided before and after the bending portion 24a. A nut 29 is screwed. At least one of the nuts 29 is preferably a double nut. Then, by fastening the fastening bolt 28, the arm portion 24 of the air valve 1 and the flange portion 26 of the rising pipe 3 can be fixed.
The fastening bolt 28 shown in FIGS. 1 and 2 is a headless bolt, but a headed bolt may be used.

本実施形態による空気弁１とその連結機構は上述の構成を備えているため、空気弁１と立ち上がり管３はアーム部２４及び締結ボルト２８によってフランジ部２３とフランジ部２６を強固に固定できるから、地震等で振動が発生したとしても、空気弁１の振れが抑制される。そのため、空気弁１のフランジ部２３と立ち上がり管３のフランジ部２６とはフランジ面がずれたり外れたりせず、立ち上がり管３からの漏水事故を抑制できる。
しかも、空気弁１はフランジ部２３の外側に突出する複数本、例えば４本のアーム部２４を挿通する締結ボルト２８によって、立ち上がり管３のフランジ部２６の外周面２６ａを押圧して固定するようにしたから、力の作用点が空気弁１の中心から離れているため固定強度が高い。 Since the air valve 1 and its connecting mechanism according to the present embodiment have the above-described configuration, the air valve 1 and the rising pipe 3 can firmly fix the flange portion 23 and the flange portion 26 by the arm portion 24 and the fastening bolt 28. Even if vibration occurs due to an earthquake or the like, the vibration of the air valve 1 is suppressed. Therefore, the flange part 23 of the air valve 1 and the flange part 26 of the riser pipe 3 are not displaced or detached from each other, and a water leakage accident from the riser pipe 3 can be suppressed.
In addition, the air valve 1 is configured to press and fix the outer peripheral surface 26a of the flange portion 26 of the rising pipe 3 with fastening bolts 28 that pass through a plurality of, for example, four arm portions 24 protruding outside the flange portion 23. Therefore, since the point of action of the force is away from the center of the air valve 1, the fixing strength is high.

更に、空気弁１の下部開口８や立ち上がり管３の内面３ａには水の流通を阻害する部材が存在しないから、スムーズな水の流通を得られる。
また、立ち上がり管３のフランジ部２６を、空気弁１のフランジ部２３に設けたアーム部２４の締結ボルト２８で外側から押圧固定する構成であるから、既存または既設の管路２の立ち上がり管３に空気弁１を容易に取り付けできる。 Further, since there is no member that obstructs the flow of water in the lower opening 8 of the air valve 1 or the inner surface 3a of the riser 3, smooth water flow can be obtained.
Further, since the flange portion 26 of the rising pipe 3 is configured to be pressed and fixed from the outside by the fastening bolt 28 of the arm portion 24 provided on the flange portion 23 of the air valve 1, the rising pipe 3 of the existing or existing pipeline 2. The air valve 1 can be easily attached.

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副弁付き空気弁３２を示すものである。本第二実施形態による副弁付き空気弁３２は、空気弁１と管路２の立ち上がり管３との間に副弁３３を取り付けた構成を備えており、副弁３３は例えば空気弁１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。 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 32 with a secondary valve according to a second embodiment of the present invention. The air valve 32 with a sub valve according to the second embodiment has a configuration in which a sub valve 33 is attached between the air valve 1 and the rising pipe 3 of the pipe 2. The float valve body 11 and the floating valve body 13 are provided for inspection and the like.

副弁３３は、副弁箱３４内に副弁体３５として略球形のボール弁体を設けており、副弁体３５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３５ａ、３５ｂが形成されている。そして、副弁箱３４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３７が設置され、内面の下部には略リング状の下部弁座３８が設置されている。そして、副弁箱３４の側部には挿通孔部４０が水平方向に形成され、この挿通孔部４０内には副弁体３５の側部に固定された弁軸４１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 33 is provided with a substantially spherical ball valve body as a sub-valve element 35 in the sub-valve box 34, and water is applied to the surface portion of the sub-valve element 35 facing the vertical direction of the substantially spherical ball valve element. Openings 35a and 35b for circulation are formed. In the sub valve box 34, a substantially ring-shaped upper valve seat 37 is installed at the upper part of the inner surface constituting the water insertion passage, and a substantially ring-shaped lower valve seat 38 is installed at the lower part of the inner surface. An insertion hole 40 is formed in the side portion of the sub valve box 34 in the horizontal direction, and a valve shaft 41 fixed to the side portion of the sub valve body 35 is disposed in the insertion hole 40 around the horizontal axis. Is rotatably inserted into the.

副弁箱３４の挿通孔部４０と弁軸４１との間にはパッキンが嵌挿され、挿通孔部４０は弁軸４１を液密に回転可能に支持している。弁軸４１の他端は副弁箱３４の外部に突出してレバー４２が取り付けられている。そのため、レバー４２を回転させることで弁軸４１を介して副弁体３５を水平軸線回りに回転させ、上下部弁座３７，３８に対して副弁体３５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 40 of the sub valve box 34 and the valve shaft 41, and the insertion hole 40 supports the valve shaft 41 in a fluid-tight manner. The other end of the valve shaft 41 protrudes outside the auxiliary valve box 34, and a lever 42 is attached. Therefore, by rotating the lever 42, the auxiliary valve body 35 is rotated around the horizontal axis via the valve shaft 41, and switching between opening and closing of the auxiliary valve body 35 with respect to the upper and lower valve seats 37 and 38 is performed. Can do.

そして、副弁３３の副弁箱３４において、上部弁座３７の上側には空気弁１の下部開口８に対向する上部開口４３が形成されている。同様に、下部弁座３８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４４が形成されている。
また、副弁３３の副弁箱３４において、上部開口４３の外周には、空気弁３２のフランジ部２３に対向する上部フランジ部４５が形成され、下部開口４４の外周には立ち上がり管３のフランジ部２６に対向する下部フランジ部４６が形成されている。これら上部フランジ部４５と空気弁１のフランジ部２３、下部フランジ部４６と立ち上がり管３のフランジ部２６とはそれぞれガスケット４８を介して図示しないボルト１７とナット１８によって連結されている。 In the auxiliary valve box 34 of the auxiliary valve 33, an upper opening 43 is formed above the upper valve seat 37 so as to face the lower opening 8 of the air valve 1. Similarly, a lower opening 44 is formed below the lower valve seat 38 so as to face the inner surface 3 a of the rising pipe 3.
Further, in the sub valve box 34 of the sub valve 33, an upper flange portion 45 facing the flange portion 23 of the air valve 32 is formed on the outer periphery of the upper opening 43, and the flange of the riser pipe 3 is formed on the outer periphery of the lower opening 44. A lower flange portion 46 facing the portion 26 is formed. The upper flange portion 45, the flange portion 23 of the air valve 1, the lower flange portion 46, and the flange portion 26 of the rising pipe 3 are connected by a bolt 17 and a nut 18 (not shown) via a gasket 48, respectively.

また、空気弁１におけるフランジ部２３から径方向外側に延びるアーム部２４が適宜数、例えば９０度間隔で４本形成されている。各アーム部２４の屈曲部２４ａには、押圧部材として、例えば締結ボルト２８が挿通孔２４ｂを通して副弁３３の上部フランジ部４５の外周面４５ａを押圧固定しており、締結ボルト２８には屈曲部２４ａの前後にナット２９が螺着されている。少なくとも一方のナット２９はダブルナットにすることが好ましい。そして、締結ボルト２８を締め込むことで、空気弁１のアーム部２４と副弁３３の上部フランジ部４５とを押圧固定できる。   Also, an appropriate number of arm portions 24 extending radially outward from the flange portion 23 in the air valve 1 are formed, for example, four at intervals of 90 degrees. As a pressing member, for example, a fastening bolt 28 presses and fixes the outer peripheral surface 45a of the upper flange portion 45 of the auxiliary valve 33 to the bending portion 24a of each arm portion 24 through the insertion hole 24b. Nuts 29 are screwed around the front and rear 24a. At least one of the nuts 29 is preferably a double nut. Then, by tightening the fastening bolt 28, the arm portion 24 of the air valve 1 and the upper flange portion 45 of the sub valve 33 can be pressed and fixed.

また、副弁３３における下部フランジ部４６から径方向外側に延びるアーム部２４と同様のアーム部５０が適宜数、例えば９０度間隔で４本形成されている。各アーム部５０の屈曲部５０ａには、押圧部材として、例えば締結ボルト２８が挿通孔５０ｂを通して立ち上がり管３のフランジ部２６の外周面２６ａを押圧固定しており、締結ボルト２８には屈曲部５０ａの前後にナット２９が螺着されている。少なくとも一方のナット２９はダブルナットにすることが好ましい。そして、締結ボルト２８を締め込むことで、副弁３３のアーム部５０と立ち上がり管３のフランジ部２６とを押圧固定できる。   Moreover, the arm part 50 similar to the arm part 24 extended to the radial direction outer side from the lower flange part 46 in the subvalve 33 is formed in an appropriate number, for example, four at intervals of 90 degrees. As a pressing member, for example, a fastening bolt 28 presses and fixes the outer peripheral surface 26a of the flange portion 26 of the rising pipe 3 through the insertion hole 50b to the bending portion 50a of each arm portion 50, and the bending bolt 50a has a bending portion 50a. A nut 29 is screwed around the front and rear. At least one of the nuts 29 is preferably a double nut. Then, by fastening the fastening bolt 28, the arm portion 50 of the sub valve 33 and the flange portion 26 of the rising pipe 3 can be pressed and fixed.

本第二実施形態による副弁付き空気弁３２は上述の構成を備えているため、空気弁１と副弁３３と立ち上がり管３とは各一対のフランジ部２３、４５とフランジ部４６、２６とがボルト１７とナット１８によって厚み方向にそれぞれ固定されている。しかも、空気弁１におけるフランジ部２３のアーム部２４から径方向内側に延びる締結ボルト２８によって副弁３３の上部フランジ部４５を押圧固定し、副弁３３における下部フランジ部４６のアーム部５０から立ち上がり管３のフランジ部２６を押圧固定している。
そのため、地震等で、副弁付き空気弁３２に管路２より大きな振動が生じたとしても、副弁３３の上部フランジ部４５は空気弁１のフランジ部２３のアーム部２４から延びる締結ボルト２８によって押圧固定され、立ち上がり管３のフランジ部２６は副弁３３の下部フランジ部４６から延びるアーム部５０によって押圧固定されているため、各フランジ部２３、４５、５０，２６はいずれもボルト１７やフランジ面がずれたりせず、漏水事故を抑制できる。 Since the air valve 32 with the subvalve according to the second embodiment has the above-described configuration, the air valve 1, the subvalve 33, and the riser pipe 3 include the pair of flange portions 23 and 45 and the flange portions 46 and 26. Are fixed in the thickness direction by bolts 17 and nuts 18, respectively. Moreover, the upper flange portion 45 of the sub valve 33 is pressed and fixed by the fastening bolt 28 extending radially inward from the arm portion 24 of the flange portion 23 of the air valve 1, and rises from the arm portion 50 of the lower flange portion 46 of the sub valve 33. The flange portion 26 of the tube 3 is pressed and fixed.
For this reason, even if an earthquake or the like causes a vibration larger than the pipe 2 in the air valve 32 with the auxiliary valve, the upper flange portion 45 of the auxiliary valve 33 extends from the arm portion 24 of the flange portion 23 of the air valve 1. Since the flange portion 26 of the riser pipe 3 is pressed and fixed by the arm portion 50 extending from the lower flange portion 46 of the sub valve 33, each of the flange portions 23, 45, 50, and 26 are all bolts 17 or The flange surface does not shift and water leakage accidents can be suppressed.

しかも、互いに連結される空気弁１の下部開口８や副弁３３の上部開口４３と下部開口４４、立ち上がり管３の内面３ａには水の流通を阻害する部材が存在しないから、スムーズな水の流通を得られる。
また、副弁３３の上部フランジ部４５や立ち上がり管３のフランジ部２６の外周面４５ａ、２６ａを外側から締結ボルト２８で押圧固定する構成であるから、固定強度が高い上に、既存または既設の管路２の立ち上がり管３に副弁付き空気弁３２を容易に取り付けできる。 Moreover, since there are no members that obstruct the flow of water in the lower opening 8 of the air valve 1 connected to each other, the upper opening 43 and the lower opening 44 of the auxiliary valve 33, and the inner surface 3a of the riser pipe 3, smooth water Distribution can be obtained.
Moreover, since it is the structure which presses and fixes the outer peripheral surfaces 45a and 26a of the upper flange part 45 of the subvalve 33 and the flange part 26 of the riser pipe 3 from the outside with the fastening bolt 28, the fixing strength is high, and the existing or existing The secondary valve-equipped air valve 32 can be easily attached to the riser pipe 3 of the pipe line 2.

なお、上述した各実施形態では、空気弁１や副弁３３のアーム部２４、５０に挿通する締結ボルト２８をナット２９に螺合させて副弁３３や立ち上がり弁３の上部フランジ部４５やフランジ部２６を押圧するようにしたが、被押圧部としての副弁３３や立ち上がり弁３等では、必ずしも上部フランジ部４５やフランジ部２６等のフランジ部を設ける必要はない。例えば、副弁３３の副弁箱３４の胴体や立ち上がり管３の管体等を締結ボルト２８で直接押圧して固定するようにしてもよい。
また、空気弁１のアーム部２４、副弁３３のアーム部５０はそれぞれフランジ部２３、下部フランジ部４６から延びて設けられているが、必ずしもフランジ部２３、４６を設ける必要はなく弁箱５、副弁箱３４の外周面から直接アーム部２４、５０が延びて設けられていてもよい。この場合、各アーム部２４、５０にボルト１７の挿通孔をそれぞれ設け、副弁３３の上部フランジ部４５、立ち上がり管３のフランジ部２６の挿通孔を通してボルト１７とナット１８とで連結してそれぞれ上下方向に固着してもよい。 In each of the above-described embodiments, the fastening bolt 28 inserted through the arm portions 24 and 50 of the air valve 1 and the subvalve 33 is screwed into the nut 29 so that the upper flange portion 45 and the flange of the subvalve 33 and the rising valve 3 are engaged. Although the portion 26 is pressed, the sub-valve 33 or the rising valve 3 as the pressed portion does not necessarily need to be provided with a flange portion such as the upper flange portion 45 or the flange portion 26. For example, the body of the sub-valve box 34 of the sub-valve 33 and the pipe body of the rising pipe 3 may be directly pressed and fixed with the fastening bolts 28.
The arm portion 24 of the air valve 1 and the arm portion 50 of the auxiliary valve 33 are provided to extend from the flange portion 23 and the lower flange portion 46, respectively, but the flange portions 23 and 46 are not necessarily provided, and the valve box 5 is not necessarily provided. The arm portions 24 and 50 may extend directly from the outer peripheral surface of the sub valve box 34. In this case, the insertion holes of the bolts 17 are provided in the arm parts 24 and 50, respectively, and are connected by the bolts 17 and the nuts 18 through the insertion holes of the upper flange part 45 of the auxiliary valve 33 and the flange part 26 of the rising pipe 3. It may be fixed in the vertical direction.

なお、空気弁１と立ち上がり管３との間、副弁３３と立ち上がり管３との間に、図５に示すような縦管５５を設けてもよい。この場合、縦管５５は中空の内面５６ａを有する管体５６と上フランジ部５７と下フランジ部５８を備えており、下フランジ部５８にはアーム部５９と締結ボルト２８及びナット２９を備えることが好ましい。
縦管５５を設置する場合、上フランジ部５７は空気弁１または副弁３３のアーム部２４、５０及び締結ボルト２８及びナット２９によって外周面を押圧固定され、下フランジ部５８はそのアーム部５９及び締結ボルト２８及びナット２９によって立ち上がり管３のフランジ部２６を押圧固定することができる。
なお、締結ボルト２８には必ずしもダブルナット２９等のナット２９を設ける必要はなく、例えば屈曲部２４ａ，５０ａの挿通孔に雌ネジが切られていてもよい。
また、上述の各実施形態ではアーム部２４，５０，５９を４本設けたが、４本に限定されるものではなく適宜本数配設でき、例えば１２０度間隔で３本、６本或いは８本等配設しても良い。
さらに、上述した実施形態による空気弁１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。 Note that a vertical pipe 55 as shown in FIG. 5 may be provided between the air valve 1 and the rising pipe 3 and between the sub valve 33 and the rising pipe 3. In this case, the vertical pipe 55 includes a tube body 56 having a hollow inner surface 56a, an upper flange portion 57, and a lower flange portion 58, and the lower flange portion 58 includes an arm portion 59, a fastening bolt 28, and a nut 29. Is preferred.
When the vertical pipe 55 is installed, the upper flange portion 57 is pressed and fixed to the outer peripheral surface by the arm portions 24 and 50 of the air valve 1 or the auxiliary valve 33, the fastening bolt 28 and the nut 29, and the lower flange portion 58 is the arm portion 59. In addition, the flange portion 26 of the rising pipe 3 can be pressed and fixed by the fastening bolt 28 and the nut 29.
The fastening bolt 28 is not necessarily provided with the nut 29 such as the double nut 29. For example, a female screw may be cut in the insertion holes of the bent portions 24a and 50a.
In the above-described embodiments, four arm portions 24, 50, and 59 are provided. However, the number of arm portions 24, 50, and 59 is not limited to four. It may be arranged equally.
Furthermore, although the air valve 1 according to the above-described embodiment includes the floating valve body 13, it may be configured as an air valve that opens and closes the large air hole 6 with the float valve body 11 without providing the floating valve body 13.

１ 空気弁
２ 管路
３ 立ち上がり管
５ 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、２６ フランジ部
２４，５０、５９ アーム部
２４ａ，５０ａ 屈曲部
２８ 締結ボルト
２９ ナット
３２ 副弁付き空気弁
３３ 副弁
３４ 副弁箱
３５ 副弁体
４５、５７ 上フランジ部
４６、５８ 下フランジ部
５５ 縦管
５６ 管体 DESCRIPTION OF SYMBOLS 1 Air valve 2 Pipe line 3 Standing pipe 5 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 seat 23, 26 Flange part 24, 50, 59 Arm part 24a , 50a Bending portion 28 Fastening bolt 29 Nut 32 Air valve with sub valve 33 Sub valve 34 Sub valve box 35 Sub valve body 45, 57 Upper flange portion 46, 58 Lower flange portion 55 Vertical pipe 56 Tube body

Claims (6)

弁箱から径方向外側に延びていて前記弁箱に連結される他の部材を囲うアーム部と、該アーム部に取り付けられて径方向に配設されていて前記他の部材を径方向内側に押圧する押圧部材とを備えたことを特徴とする空気弁。 An arm portion that extends radially outward from the valve box and encloses another member that is connected to the valve box; and is attached to the arm portion and disposed in the radial direction so that the other member is positioned radially inward An air valve comprising a pressing member for pressing. 弁箱から径方向外側に延びていて前記弁箱に連結される他の部材を囲うアーム部と、該アーム部に取り付けられていて前記他の部材を押圧する押圧部材とを備え、
前記押圧部材はナットに螺合した締結ボルトであることを特徴とする空気弁。 An arm portion that extends radially outward from the valve box and surrounds another member connected to the valve box; and a pressing member that is attached to the arm portion and presses the other member.
The air valve according to claim 1, wherein the pressing member is a fastening bolt screwed into a nut. 弁箱から径方向外側に延びていて前記弁箱に連結される副弁を囲う第一アーム部と、該第一アーム部に取り付けられて径方向に配設されていて前記副弁を径方向内側に押圧する第一押圧部材とを備えた空気弁と、
前記空気弁に連通する流体の連通路を有する副弁箱と、該副弁箱内に設けられていて前記連通路を開閉可能な副弁体と、前記副弁箱から径方向外側に延びていて前記副弁箱に連結される他の部材を囲う第二アーム部と、該第二アーム部に取り付けられて径方向に配設されていて前記他の部材を径方向内側に押圧する第二押圧部材とを備えた前記副弁と、
を備えたことを特徴とする副弁付き空気弁。 A first arm portion extending radially outward from the valve box and enclosing a sub-valve connected to the valve box; and attached to the first arm portion and arranged in a radial direction so that the sub-valve is in the radial direction An air valve provided with a first pressing member that presses inward ;
A sub-valve box having a fluid communication path communicating with the air valve, a sub-valve body provided in the sub-valve box and capable of opening and closing the communication path, and extending radially outward from the sub-valve box. A second arm portion surrounding the other member connected to the sub valve box, and a second arm portion which is attached to the second arm portion and arranged in the radial direction and presses the other member inward in the radial direction . The auxiliary valve comprising a pressing member;
An air valve with a secondary valve, characterized by comprising: 弁箱から径方向外側に延びていて前記弁箱に連結される副弁を囲う第一アーム部と、該第一アーム部に取り付けられていて前記副弁を押圧する第一押圧部材とを備えた空気弁と、前記空気弁に連通する流体の連通路を有する副弁箱と、該副弁箱内に設けられていて前記連通路を開閉可能な副弁体と、前記副弁箱から径方向外側に延びていて前記副弁箱に連結される他の部材を囲う第二アーム部と、該第二アーム部に取り付けられていて前記他の部材を押圧する第二押圧部材とを備えた前記副弁と、を備え、
前記第一押圧部材と第二押圧部材はナットに螺合した締結ボルトであることを特徴とする請求項３に記載された副弁付き空気弁。 A first arm portion that extends radially outward from the valve box and encloses a sub valve connected to the valve box; and a first pressing member that is attached to the first arm portion and presses the sub valve. An air valve, a sub valve box having a fluid communication path communicating with the air valve, a sub valve body provided in the sub valve box and capable of opening and closing the communication path, and a diameter from the sub valve box A second arm portion that extends outward in the direction and surrounds another member connected to the sub valve box; and a second pressing member that is attached to the second arm portion and presses the other member. The auxiliary valve,
The said 1st press member and the 2nd press member are the fastening bolts screwed by the nut, The air valve with a subvalve described in Claim 3 characterized by the above-mentioned. 請求項１または２に記載された空気弁を有しており、前記他の部材は、前記空気弁に連通する流体の連通路を有する副弁箱と該副弁箱内に設けられていて前記連通路を開閉可能な副弁体とを備えた副弁、または流体が流通する管路に設けた立ち上がり管であり、前記副弁または立ち上がり管に設けたフランジ部を、前記押圧部材で押圧するようにしたことを特徴とする空気弁の連結機構。   The air valve according to claim 1 or 2, wherein the other member is provided in a sub valve box having a fluid communication path communicating with the air valve, and the sub valve box. A secondary valve provided with a secondary valve body capable of opening and closing the communication passage, or a riser pipe provided in a conduit through which fluid flows, and a flange portion provided in the secondary valve or the riser pipe is pressed by the pressing member. An air valve coupling mechanism characterized by that. 請求項３または４に記載された副弁付き空気弁を有しており、前記副弁には第一フランジ部が設けられ、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であって第二フランジ部が設けられ、前記第一押圧部材で第一フランジ部を押圧し、前記第二押圧部材で第二フランジ部を押圧するようにしたことを特徴とする副弁付き空気弁の連結機構。   An air valve with a secondary valve according to claim 3 or 4 is provided, wherein the secondary valve is provided with a first flange portion, and the other member is a rising pipe provided in a conduit through which fluid flows. A second flange portion is provided, wherein the first flange is pressed by the first pressing member, and the second flange portion is pressed by the second pressing member. Linkage mechanism.
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