JPS5919166Y2 - air valve - Google Patents
air valveInfo
- Publication number
- JPS5919166Y2 JPS5919166Y2 JP1980115615U JP11561580U JPS5919166Y2 JP S5919166 Y2 JPS5919166 Y2 JP S5919166Y2 JP 1980115615 U JP1980115615 U JP 1980115615U JP 11561580 U JP11561580 U JP 11561580U JP S5919166 Y2 JPS5919166 Y2 JP S5919166Y2
- Authority
- JP
- Japan
- Prior art keywords
- valve
- air
- atmosphere
- valve chamber
- pipe
- 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
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- Self-Closing Valves And Venting Or Aerating Valves (AREA)
Description
【考案の詳細な説明】
この考案は管路内の空気は大気中へ放出するが大気中の
空気の管路内への流入量は調節ネジにより調節が自在で
ある空気弁に関する。[Detailed Description of the Invention] This invention relates to an air valve that releases air within a pipe to the atmosphere, but allows the amount of air from the atmosphere to flow into the pipe to be freely adjusted using an adjustment screw.
周知のように、空気弁は大気と繋がっている通気孔を形
成した弁座と弁室内に収納したフロート弁を主構成要素
とし、該フロート弁が弁座に密着する管路内の高水圧時
を除いては大気と弁室内は空気の流通が自由に行われる
ようになっていて、管路内の圧力が適度に調節されて管
路内の破損の防止を図っている。As is well known, the main components of an air valve are a valve seat with a vent connected to the atmosphere and a float valve housed in the valve chamber. Except for the valve chamber, air can freely circulate between the atmosphere and the valve chamber, and the pressure inside the pipe is appropriately regulated to prevent damage within the pipe.
しかしながら、ポンプ加圧送水管路におけるポンプ近辺
管路は、ポンプの停止時に水の慣性による水撃が発生し
、ポンプ停止直後はまず圧力が真空状態になる。However, in the pump pressurized water supply pipeline, water hammer occurs due to the inertia of the water when the pump is stopped, and the pressure first becomes a vacuum immediately after the pump stops.
このとき、従来の空気弁では空気が管路内に流入して水
撃の緩和を行うので、管路の他の空気弁からの空気の排
出がスムーズにゆかない場合には、残留した空気が種々
の支障を起す欠点があった。At this time, with conventional air valves, air flows into the pipeline to alleviate water hammer, so if air cannot be discharged smoothly from other air valves in the pipeline, the remaining air may There were drawbacks that caused various problems.
又、サイフオン送水管路においては、静水圧時にサイフ
オン管が有圧状態を保持し得る管路において、動水圧時
には下流側の給水量が多くなりすぎて真空状態になり空
気弁から空気を流入させると、下流側に流入した空気が
流れてゆき水量が低下すると共に、下流側への給水量が
少なくなったときに管路に残留した空気が種々の支障を
起す欠点があった。In addition, in a siphon water supply pipeline, in a pipeline where the siphon pipe can maintain a pressurized state during hydrostatic pressure, when the water pressure is applied to the downstream side, the amount of water supplied becomes too large and a vacuum state is created, causing air to flow in from the air valve. This has the drawback that the air that has flowed into the downstream side flows and the amount of water decreases, and when the amount of water supplied to the downstream side decreases, the air remaining in the pipe line causes various problems.
さらに又、消火活動時に消防ポンプの吸引力が強すぎて
管路が真空状態になった際に、消火栓の近辺の空気弁か
ら空気が管路に吸入されると、消防ポンプの吸引能力が
低下すると共に消火に必要な水の吐出圧力低下を来し、
又、消火ホース内に水と混合した空気が流れるため、空
気による水撃が発生し、消火活動の低下を来すと共に、
ホース及び消防ノズルの揺れが発生して危険であるなど
の欠点を有している。Furthermore, during firefighting, when the suction power of the fire pump is too strong and the pipe becomes a vacuum, air is sucked into the pipe from the air valve near the fire hydrant, reducing the suction capacity of the fire pump. At the same time, the discharge pressure of the water necessary for extinguishing the fire decreases,
In addition, since air mixed with water flows inside the fire hose, water hammer due to the air occurs, reducing firefighting efficiency and
This method has drawbacks such as the shaking of the hose and fire nozzle, which is dangerous.
ところで、水管中の気泡群を円滑に自動排出できる木管
用自動排気弁として第３図に示すものが知られている（
実公昭５２−１３６３５号）。By the way, the one shown in Figure 3 is known as an automatic exhaust valve for wood pipes that can smoothly and automatically discharge air bubbles in water pipes (
Utsuko No. 52-13635).
この自動排気弁は、水管２内に存在する気泡を自動的に
排出する自動排気弁１において、該気泡群を捕集するた
め、流水方向と反対側に開口する斜切断面４、を有する
円筒状突起管４を弁流口１□に適宜垂設し、捕集される
気泡群を弁出口１□に円滑に誘導するため、弁１内のフ
ロート５の孔５□を弁入口１□から直通するように穿ち
、また水管２への空気道流人を防ぐため、弁入口１□に
逆止弁６を設けて戊るもので、このような空気逆流を阻
止する逆止弁６を有する排気弁の技術を上記の空気弁に
適用することは勿論可能である。This automatic exhaust valve is an automatic exhaust valve 1 that automatically discharges air bubbles existing in a water pipe 2, and has a cylindrical shape having an oblique cut surface 4 that opens on the opposite side to the water flow direction in order to collect the air bubbles. The protrusion tube 4 is appropriately installed vertically at the valve flow port 1□, and in order to smoothly guide the collected bubbles to the valve outlet 1□, the hole 5□ of the float 5 in the valve 1 is inserted from the valve inlet 1□. A check valve 6 is provided at the valve inlet 1□ to prevent air from flowing into the water pipe 2, and the check valve 6 is provided to prevent such backflow of air. It is of course possible to apply the exhaust valve technology to the above air valve.
しかしながら、この自動排気弁に設けられた逆止弁は空
気の逆流を完全に阻止するものであるため、この技術を
空気弁にそのまま適用しても、管内圧力の増圧時には空
気排出により圧力緩衝をおこなえるが、減圧時には全く
緩衝作用を行うことができないという不都合がある。However, the check valve installed in this automatic exhaust valve completely prevents backflow of air, so even if this technology is applied directly to an air valve, when the pressure inside the pipe increases, the pressure will be buffered by exhausting air. However, it has the disadvantage that it cannot provide any buffering effect when the pressure is reduced.
この考案は上記事情に鑑みなされたものであって、管路
に空気が流入しては好ましくないポンプ近辺に設置する
場合、サイフオン送水管路に設置する場合、さらには消
火栓の近辺に設置する場合には大気中の空気の管路内へ
の流入を完全に阻止又は実質的に阻止できるように空気
の流入量を零又は大幅に絞ることができ、設置場所に応
じて管路への流入量がある程度多い方が望ましい場合に
は流入量を自由に増大できる、空気流入量の調節自在な
空気弁を提供することを目的とする。This idea was created in view of the above circumstances, and is applicable when installing near a pump where it is undesirable for air to flow into the pipe, when installing in a saifon water supply pipe, and when installing near a fire hydrant. The amount of air flowing into the pipe can be reduced to zero or significantly so that the flow of atmospheric air into the pipe can be completely or substantially prevented, and the amount of air flowing into the pipe can be reduced depending on the installation location. An object of the present invention is to provide an air valve that can freely adjust the amount of air flowing in, and can freely increase the amount of air flowing in when a certain amount of air flow is desired.
即ち、この考案の空気弁は、弁室内に収納したフロート
弁が大気と繋がる通気孔を有する弁座がら離反すること
により、管路内の空気を大気中に放出又は大気中の空気
を管路内に導入する空気弁において、弁室と大気を繋ぐ
通気孔の径路の中に、弁室内から大気方向へは通気孔を
全開して空気を通過させるが、大気中がら弁室内方向へ
の空気の流入量が調節可能である一方向流量調整自在弁
を設けたことを要旨とする空気弁であって、該一方向流
量調節自在弁はより具体的には内部通気孔と該内部通気
孔の開口面を絞り調節可能な調節ネジを備えたものであ
る。That is, in the air valve of this invention, the float valve housed in the valve chamber separates from the valve seat which has a vent that connects to the atmosphere, thereby releasing the air in the pipe into the atmosphere or directing the air from the atmosphere into the pipe. In a valve that introduces air into the valve chamber, the vent hole is fully opened to allow air to pass from the valve chamber to the atmosphere in the path of the vent that connects the valve chamber to the atmosphere. This air valve is equipped with a one-way flow rate adjustable valve that can adjust the inflow amount of air, and more specifically, the one-way flow rate adjustable valve is configured to include an internal vent and a It is equipped with an adjustment screw that allows the aperture to be adjusted.
而して、この考案の空気弁にあっては、管路と連なる弁
室が増圧すると、弁室内の空気が一方向流量調節自在弁
を押し開けて大気中にスムーズに放出され、逆に管路が
減圧されると、大気中の空気が一方向流量調節自在弁の
内部通気路を通って調節ネジで絞られた流量で弁室内へ
流入されるようになっており、この調節ネジを進退させ
ることによって流入量が自在に調節できるので、例えば
この空気弁をポンプ近辺等のように流入を阻止したい個
所に設置する場合は調節ネジを完全に締付けて流入量を
零とし、流入量をある程度多くして減圧時の緩衝を行わ
せる方が好ましい場所に設置するばあいには調節ネジを
緩めて緩衝作用を行わせるなど、空気弁の設置個所に応
じて最適の状態に調節することができるのである。In the air valve of this invention, when the pressure in the valve chamber connected to the pipe increases, the air in the valve chamber pushes open the one-way flow rate adjustable valve and is smoothly released into the atmosphere, and vice versa. When the pressure in the pipe line is reduced, air from the atmosphere passes through the internal air passage of the one-way adjustable flow rate valve and flows into the valve chamber at a flow rate that is restricted by the adjustment screw. The amount of inflow can be adjusted freely by moving it forward or backward, so if you want to install this air valve in a location where you want to prevent inflow, such as near a pump, tighten the adjustment screw completely to make the amount of inflow zero. If the air valve is installed in a location where it is preferable to increase the number of air valves to provide a buffer during depressurization, it is possible to adjust the air valve to the optimum condition depending on the installation location, such as loosening the adjustment screw to provide a buffer effect. It can be done.
しかもこのような空気弁は、ＪＩＳ及びＪＷＷＡ（日本
水道協会）で規格された従来の空気弁の構造を損なうこ
となくその上部に流入量調節自在な一方向流量調整自在
弁をとりつけるだけで容易に得ることができるものであ
る。Moreover, such an air valve can be easily created by simply attaching a one-way flow rate adjustable valve that can freely adjust the inflow amount to the top of the air valve without damaging the structure of the conventional air valve specified by JIS and JWWA (Japan Water Works Association). It is something that can be obtained.
この考案の実施例について以下図面の記載に基づいて説
明するが、この考案はこの実施例に限定されるものでは
ない。An embodiment of this invention will be described below based on the description of the drawings, but this invention is not limited to this embodiment.
第１図に示す実施例の空気弁は、弁箱１内の弁室２内に
フロート弁案内３にガイドされて上下に移動するフロー
ト弁４が収納されている。The pneumatic valve of the embodiment shown in FIG. 1 has a float valve 4 housed in a valve chamber 2 in a valve box 1, which is guided by a float valve guide 3 and moves up and down.
そして、該フロート弁４が弁座受け５の先端にねしこま
６によって螺合同着された円すい状弁座７と密着又は離
反することにより、弁座受け５及び円すい状弁座７に形
成した通気孔８を通じて弁室２内の水の放出を阻止する
と共に大気と弁室２内の空気の流通を行うようになって
いる。Then, the float valve 4 comes into close contact with or separates from the conical valve seat 7 which is screwed onto the tip of the valve seat receiver 5 by means of a screw piece 6, thereby forming a shape on the valve seat receiver 5 and the conical valve seat 7. The vent hole 8 prevents water from being discharged from within the valve chamber 2 and allows air to circulate between the atmosphere and the inside of the valve chamber 2.
弁座受け５は弁箱１にボルト９によって固定された弁蓋
１０の中央部に形成した穴内にブツシュ１１を介して螺
合固着されている。The valve seat receiver 5 is screwed into a hole formed in the center of a valve cover 10 fixed to the valve box 1 with bolts 9 through a bushing 11.
弁座受け５の縦方向の中心を貫通して形成された通気孔
８の上方及び弁座受け５の上方に螺合固着されたキャッ
プ１２には一方向流量調節自在弁１３を収納する一方向
流量調節自在弁室１４が設けられている。A one-way adjustable flow rate valve 13 is housed in a cap 12 screwed and fixed above a vent hole 8 formed through the vertical center of the valve seat receiver 5 and above the valve seat receiver 5. A flow rate adjustable valve chamber 14 is provided.
そして該一方向流量調節自在弁室１４は弁座受け５内に
横方向に形成された通気孔１５及びキャップ１２に形成
された通気孔１６を通じて大気と繋がっている。The one-way flow rate adjustable valve chamber 14 is connected to the atmosphere through a vent hole 15 formed laterally in the valve seat receiver 5 and a vent hole 16 formed in the cap 12.
一方向流量調節自在弁１３の下方は一方向流量調節自在
弁室１４の下方の逆円錐形状の弁座１７と対をなして逆
円錐形状を形成しており、該一方向流量調節自在弁１３
が弁座１７と密着又は離反することにより通気孔８を閉
塞又は開通するようにしている。The lower part of the one-way flow rate adjustable valve 13 forms a pair with an inverted conical valve seat 17 below the one-way flow rate adjustable valve chamber 14 to form an inverted conical shape.
By coming into close contact with or separating from the valve seat 17, the vent hole 8 is closed or opened.
一方向流量調節自在弁１３は、第４〜５図に示すように
、弁１３の内部の中央部に制御弁室１８を設け、該制御
弁室１８の真下にはさらに弁座受け５の通気孔８に連通
ずる通気孔１９を形成すると共に一方向流量調節自在弁
室１４に連通ずる通気孔２０を横方向に形成している。As shown in FIGS. 4 and 5, the one-way flow rate adjustable valve 13 is provided with a control valve chamber 18 in the center inside the valve 13, and a valve seat holder 5 is further provided directly below the control valve chamber 18. A ventilation hole 19 communicating with the air hole 8 is formed, and a ventilation hole 20 communicating with the one-way flow rate adjustable valve chamber 14 is formed in the lateral direction.
そして、一方向流量調節自在弁１３の中央上方には通気
孔１９を閉塞するか又は通過する空気の量の調節が自在
できるように制御弁室１８内へ先端が突出した調節ネジ
２１が螺合固着して配置されている。An adjusting screw 21 whose tip protrudes into the control valve chamber 18 is screwed into the upper center of the one-way flow rate adjustable valve 13 so as to close the vent hole 19 or freely adjust the amount of air passing through. Fixed and placed.
尚、第１図において、２２はコック本体、２３は栓であ
る。In addition, in FIG. 1, 22 is a cock body, and 23 is a stopper.
以上の構成からなるこの考案の動作について説明する。The operation of this invention having the above configuration will be explained.
図外の管路にコック本体２２が取り付けられて、栓２３
が開けられると、管路内の水が弁室２内に導かれる。The cock body 22 is attached to a pipe (not shown), and the stopper 23
When the valve chamber 2 is opened, water in the conduit is led into the valve chamber 2.
そして、流入量を多少必要とする場合には、一方向流量
調節自在弁１３の上方に螺合固着している調節ネジ２１
を回転させて、その先端を一方向流量調節自在弁１３の
内部に設けた制御弁室１８と弁座受け５の通気孔８を繋
ぐ通気孔１９から離しておく。If a certain amount of inflow is required, an adjustment screw 21 screwed and fixed above the one-way flow rate adjustment valve 13 is used.
is rotated to separate its tip from the vent hole 19 that connects the control valve chamber 18 provided inside the one-way flow rate adjustable valve 13 and the vent hole 8 of the valve seat receiver 5.
この状態で管路内が真空になった時は、大気中の空気は
キャップ１２の通気孔１６、弁座受け５の横方向の通気
孔１５、一方向流量調節自在弁室１４、一方向流量調節
自在弁１３に設けた通気孔１７、制御弁室１８、制御弁
室１８と弁座受け５の通気孔８を繋ぐ通気孔１９及び弁
座受け５の通気孔８を通って、弁室から管路内に導かれ
る（第４図参照）。When the inside of the pipe becomes a vacuum in this state, atmospheric air flows through the vent hole 16 of the cap 12, the horizontal vent hole 15 of the valve seat receiver 5, the one-way flow rate adjustable valve chamber 14, and the one-way flow rate. From the valve chamber through the vent hole 17 provided in the adjustable valve 13, the control valve chamber 18, the vent hole 19 connecting the control valve chamber 18 and the vent hole 8 of the valve seat receiver 5, and the vent hole 8 of the valve seat receiver 5. It is guided into the pipe (see Figure 4).
大気中へ弁室２内の空気を放出する場合の動作は前記と
同様である（第５図参照）。The operation when discharging the air in the valve chamber 2 into the atmosphere is the same as described above (see FIG. 5).
この場合において、流入を完全に防止する場合には制御
弁２１の一方向流量調節自在弁１３への締め付けを強め
て通気孔１９に密着させ、逆に流入量を増大させる場合
には制御弁２１を緩めて通気孔１９との間隔距離を増大
させることにより調節する（第５図参照）。In this case, if the inflow is to be completely prevented, the control valve 21 should be tightened tightly against the one-way flow rate adjustable valve 13 to make it tightly contact the vent hole 19, and conversely, if the inflow should be increased, the control valve 21 should be tightly tightened. Adjustment is made by loosening the hole and increasing the distance from the ventilation hole 19 (see FIG. 5).
第２図はこの考案のもう一つの実施例を示すもので、こ
のものは、ＪＷＷＡ−Ｂ１１８の空気弁に既述の如き空
気の流入量を調節できる一方向流量調節自在弁１３を設
けたもので、空気弁自体の構造が少し異なるのみであり
、一方向流量調節自在弁１３等のこの考案の要部は実質
的に既述の第１図の空気弁のものと同様であるので、対
応する部材に同一符号を付けるだけにして説明を省略す
る。FIG. 2 shows another embodiment of this invention, in which the air valve of JWWA-B118 is provided with a one-way flow rate adjustable valve 13 that can adjust the amount of air flowing in as described above. The only difference is in the structure of the air valve itself, and the main parts of this invention, such as the one-way flow rate adjustable valve 13, are substantially the same as those of the air valve shown in FIG. The same reference numerals are used to denote the same members, and the explanation thereof will be omitted.
以上の説明から明らかなように、この考案の空気弁によ
ると、管路内の空気を大気中に放出する場合には、従来
の空気弁と同様に自由に排出することができるが、大気
中の空気の流入は完全に阻止又は必要に応じてその流入
量を自在に調節して行うことができるので、ポンプ近辺
に設置する場合は消火栓の近辺に設置する場合など、大
気から弁室への流入が好ましくない場合には調節ネジで
流入量を零又は実質的に零とし、その他流入量がある程
度多い方が望ましい個所に設置する場合は、調節ネジで
流入量を適当に調節することにより、管路の状態を最適
に維持してトラブルの発生を防止することができるとい
う効果を有する。As is clear from the above explanation, according to the air valve of this invention, when air in the pipe is released into the atmosphere, it can be freely discharged like a conventional air valve, but when air is released into the atmosphere, The inflow of air can be completely blocked or the amount of air inflow can be freely adjusted as necessary. If the inflow is undesirable, use the adjustment screw to set the inflow to zero or substantially zero; if the installation is in a location where a certain amount of inflow is desirable, use the adjustment screw to adjust the inflow as appropriate. This has the effect of being able to optimally maintain the condition of the pipeline and prevent trouble from occurring.
しかも、この考案の空気弁は、ＪＡＳ及びＪＷＷＡで規
格された従来の空気弁の構成を損なうことなく、その上
部に流入量調節自在な一方向流量調節自在弁をとりつけ
るだけで容易に得ることができるという効果もある。Moreover, the air valve of this invention can be easily obtained by simply attaching a one-way flow rate adjustable valve that can freely adjust the inflow amount to the top of the air valve without damaging the structure of the conventional air valve standardized by JAS and JWWA. There is also the effect that it can be done.
第１図はこの考案の一実施例の断面図、第２図はこの考
案のもう一つの実施例の断面図、第３図は従来例の断面
図、第４図及び第５図は夫々一方向流量調節自在弁を設
けた部分の拡大部分断面図である。
１・・・・・・弁箱、２・・・・・・弁室、４・・・・
・・フロート弁、５・・・・・・弁座受け、７・・・・
・・円すい状弁座、８，１５゜１６、１９．２０・・・
・・・通気孔、１３・・・・・・一方向流量調節自在弁
、２１・・・・・・調節ネジ。Fig. 1 is a sectional view of one embodiment of this invention, Fig. 2 is a sectional view of another embodiment of this invention, Fig. 3 is a sectional view of a conventional example, and Figs. 4 and 5 are the same. FIG. 3 is an enlarged partial cross-sectional view of a portion provided with a directional flow rate adjustable valve. 1... Valve box, 2... Valve chamber, 4...
...Float valve, 5... Valve seat holder, 7...
...Conical valve seat, 8,15゜16,19.20...
...Vent hole, 13...One-way flow rate adjustable valve, 21...Adjustment screw.
Claims (1)
する弁座から離反することにより管路内の空気を大気中
に放出又は大気中の空気を管路内に流入する空気弁にお
いて、弁室と大気を繋ぐ通気孔の径路の中に、弁室内か
ら大気方向へは前記通気孔を全開して空気を通過させる
が、大気中から弁室内方向へは前記通気孔の全開時より
も小さい開度の範囲内で空気の流入量が絞り調節可能で
ある調節ネジを具備した一方向流量調節自在弁を設けた
ことを特徴とする空気弁。In an air valve in which air in a pipe is released into the atmosphere or air from the atmosphere flows into a pipe when a float valve housed in the valve chamber separates from a valve seat having a vent that connects to the atmosphere, the valve chamber In the path of the vent hole that connects the valve chamber to the atmosphere, the vent hole is fully opened to allow air to pass from the valve chamber to the atmosphere, but from the atmosphere toward the valve chamber, there is a path that is smaller than when the vent hole is fully open. 1. An air valve comprising a one-way flow rate adjustable valve equipped with an adjustment screw that can throttle and adjust the amount of air inflow within a range of 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1980115615U JPS5919166Y2 (en) | 1980-08-14 | 1980-08-14 | air valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1980115615U JPS5919166Y2 (en) | 1980-08-14 | 1980-08-14 | air valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5738972U JPS5738972U (en) | 1982-03-02 |
| JPS5919166Y2 true JPS5919166Y2 (en) | 1984-06-02 |
Family
ID=29476530
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1980115615U Expired JPS5919166Y2 (en) | 1980-08-14 | 1980-08-14 | air valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5919166Y2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5715877B2 (en) * | 2010-06-25 | 2015-05-13 | 協和工業株式会社 | Air valve and fire hydrant with air valve |
| JP5773487B2 (en) * | 2011-08-04 | 2015-09-02 | 協和工業株式会社 | Air valve |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5213635U (en) * | 1975-07-18 | 1977-01-31 |
-
1980
- 1980-08-14 JP JP1980115615U patent/JPS5919166Y2/en not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5213635U (en) * | 1975-07-18 | 1977-01-31 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5738972U (en) | 1982-03-02 |
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