JP3056184B1 - Air valve - Google Patents
Air valveInfo
- Publication number
- JP3056184B1 JP3056184B1 JP10369030A JP36903098A JP3056184B1 JP 3056184 B1 JP3056184 B1 JP 3056184B1 JP 10369030 A JP10369030 A JP 10369030A JP 36903098 A JP36903098 A JP 36903098A JP 3056184 B1 JP3056184 B1 JP 3056184B1
- Authority
- JP
- Japan
- Prior art keywords
- intake
- valve
- exhaust
- exhaust hole
- diameter
- 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 - Fee Related
Links
Landscapes
- Self-Closing Valves And Venting Or Aerating Valves (AREA)
- Details Of Valves (AREA)
Abstract
【要約】
【課題】従来の空気弁における、送液管内の空気が多量
に弁箱内に流入した場合に生じる大口径吸排気孔の閉鎖
直前に多量の水を吹き上げたり、大口径吸排気孔を閉じ
るときに生じる急速な流れを瞬間的に遊動弁体により止
めることによるウォーターハンマー現象の発生を防止す
る。
【解決手段】 大口径吸排気孔31を開閉する遊導弁体を
システムプレート11に構成し、その作動を、大口径吸排
気孔に向けて押し上げる機構２の付勢力と弁箱１内の内
圧に対応して該大口径吸排気孔を開閉するように構成
し、該システムプレートに設けられた小口径吸排気孔12
と、弁箱内の水位に対応して開閉するフロート弁体４と
を設けて吸排気孔を調整するとともに、大口径吸排気孔
を開閉するシステムプレートの作動を、押し上げ機構の
調整により変化させ、大口径吸排気孔の閉鎖基準圧の設
定を調整可能に構成し設置環境にも対応できるようにし
た。A conventional air valve blows up a large amount of water or closes a large-diameter intake / exhaust hole immediately before closing a large-diameter intake / exhaust hole generated when a large amount of air in a liquid feed pipe flows into a valve box. This prevents the occurrence of the water hammer phenomenon caused by instantaneously stopping the rapid flow that occurs sometimes by the floating valve element. SOLUTION: A free-flowing valve body for opening and closing a large-diameter intake / exhaust hole 31 is formed on a system plate 11, and the operation thereof corresponds to the urging force of a mechanism 2 for pushing up toward the large-diameter intake / exhaust hole and the internal pressure in the valve box 1. To open and close the large-diameter intake / exhaust holes, and the small-diameter intake / exhaust holes 12 provided in the system plate.
And a float valve body 4 that opens and closes in accordance with the water level in the valve box to adjust the intake and exhaust holes, and changes the operation of the system plate that opens and closes the large-diameter intake and exhaust holes by adjusting the push-up mechanism. The setting of the reference pressure for closing the intake / exhaust port is adjustable so that it can be adapted to the installation environment.
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、給水管等の液体輸
送管の所要部、特に建物上階部への立ち上がり給水管の
上部に取り付けて、工事などにより送水管内の水が抜か
れて空状態になった時、再給水により管内に水が充満す
る際などに給送水中に混入したり滞留したりする空気を
円滑に吸排するための空気弁に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid transport pipe, such as a water pipe, which is mounted on a required part of a liquid transport pipe, particularly, an upper part of a rising water pipe of a building. The present invention relates to an air valve for smoothly sucking and discharging air that enters or stays in feed water when the pipe is filled with water due to re-water supply.
【０００２】[0002]
【従来の技術】従来、この種の空気弁は、大口径吸排気
孔と小口径吸排気孔とによって吸排気を行い、管内の水
の排水によって発生する弁箱内の内圧が大気圧あるいは
それ以下のとき、大口径吸排気孔、小口径吸排気孔とも
に開放されて吸排気状態にあるが、最初の送水時には空
気の排出により弁箱内の水位が上昇すると、遊動弁体及
びフロート弁体が押し上げられて２つの吸排気孔が閉鎖
され、水の溢出を防止する構成となっている。2. Description of the Related Art Conventionally, this type of air valve performs intake and exhaust through a large-diameter intake and exhaust hole and a small-diameter intake and exhaust hole, and an internal pressure in a valve box generated by drainage of water in a pipe is equal to or lower than the atmospheric pressure. At this time, both the large-diameter intake / exhaust holes and the small-diameter intake / exhaust holes are open and in the intake / exhaust state, but when the water level in the valve box rises due to the discharge of air during the first water supply, the floating valve body and the float valve body are pushed up. The two intake and exhaust holes are closed to prevent overflow of water.
【０００３】２つの吸排気孔が閉鎖され、弁箱内に送水
がされると送水管内に滞留する空気が弁箱内に送られて
弁箱内の水位が下がり、小口径吸排気孔を閉鎖していた
フロート弁体が水面まで下がって小口径吸排気孔が開放
されて空気が排出される。When the two intake / exhaust holes are closed and water is supplied into the valve box, air staying in the water pipe is sent into the valve box, the water level in the valve box drops, and the small-diameter intake / exhaust hole is closed. The float valve body descends to the surface of the water, and the small-diameter intake / exhaust hole is opened to discharge air.
【０００４】この作動の中心となる遊動弁体を大口径吸
排気孔に押し付ける作動は、弁箱内の水位とこれにかか
る遊動弁体の浮力及び弁箱内の内圧に依存していた。The operation of pressing the floating valve element, which is the center of this operation, against the large-diameter intake / exhaust hole depends on the water level in the valve box, the buoyancy of the floating valve element and the internal pressure in the valve box.
【０００５】[0005]
【発明が解決しようとする課題】従来の空気弁は、上記
のように遊動弁体を大口径吸排気孔に押し付ける作動
を、弁箱内の水位とこれにかかる遊動弁体の浮力及び弁
箱内の内圧に依存しているため、遊動弁体の開閉基準圧
を人為的に調整することができなかった。In the conventional air valve, the operation of pressing the floating valve element against the large-diameter intake / exhaust hole as described above is performed by adjusting the water level in the valve box, the buoyancy of the floating valve element and the buoyancy of the floating valve element. , The opening and closing reference pressure of the floating valve element could not be artificially adjusted.
【０００６】そのため、充水時に送液管内の空気が多量
に弁箱内に流入すると、弁箱内の気圧が一気に高まり、
更に水が遊動弁体まで来て大口径吸排気孔を閉じるタイ
ミングと、水が大口径吸排気孔を通るタイミングに時間
的なずれを生じ、大口径吸排気孔の閉鎖直前に多量の水
が吹き上げる現象を避けることができなかった。[0006] Therefore, when a large amount of air in the liquid feed pipe flows into the valve box during filling with water, the air pressure in the valve box increases at a stretch,
Furthermore, there is a time lag between the timing when water comes to the floating valve body and closes the large-diameter intake / exhaust hole, and the time when water passes through the large-diameter intake / exhaust hole, causing a large amount of water to blow up immediately before the large-diameter intake / exhaust hole is closed. I couldn't avoid it.
【０００７】また、大口径吸排気孔を閉じるとき、急速
な流れを瞬間的に遊動弁体により止めるためにウォータ
ーハンマー現象が起きやすい。特に建物内配管の場合に
は、ウォーターハンマー現象は使用器具の故障の原因と
なり、排気孔からの水の吹き上げ現象は周囲を水浸しに
するため、吹き上げる水を受けてそれを下流側に流すた
めの配管設備が必要となる等多くの問題がある。Further, when the large-diameter intake / exhaust hole is closed, the rapid flow is instantaneously stopped by the floating valve body, so that the water hammer phenomenon easily occurs. In particular, in the case of piping in buildings, the water hammer phenomenon causes malfunction of the equipment used, and the phenomenon of water blowing up from the exhaust hole causes the surroundings to be flooded, so that the water that blows up receives and flows it downstream. There are many problems, such as the need for piping equipment.
【０００８】更に、フロート弁体の浮動規制機構は、フ
ロート弁体が遊動弁体の下部で可なり自由な遊動状態を
必要とする関係とフロート弁体の下降時に本管からの通
水吸排気構造の閉塞を防止するため、大枠の弁体ケース
のほかに、フロート弁体受けが必要であり構造を更に複
雑なものとしていた。Further, the floating restricting mechanism of the float valve element is characterized in that the float valve element requires a considerably free floating state below the floating valve element, and that water is sucked and exhausted from the main pipe when the float valve element descends. In order to prevent the blockage of the structure, a float valve body receiver is required in addition to the large valve body case, which further complicates the structure.
【０００９】弁箱の上面を覆蓋する弁蓋は、大口径吸排
気孔を備えると共に吸排気を特定方向に導くために屈曲
吸排気キャップと連結されるが、螺合などの通常の連結
手段によると方向性が固定され、設置環境に対応するこ
とができないため、屈曲方向ごとに複数の吸排気キャッ
プを用意しなければならないという問題もある。The valve cover for covering the upper surface of the valve box is provided with a large-diameter intake / exhaust hole and is connected to a bent intake / exhaust cap for guiding the intake / exhaust in a specific direction. Since the directionality is fixed and cannot be adapted to the installation environment, there is a problem that a plurality of intake / exhaust caps must be prepared for each bending direction.
【００１０】[0010]
【課題を解決するための手段】本発明は上記した事情に
鑑みこれに対応しようとするものであり、大口径吸排気
孔を開閉する遊導弁体をシステムプレートに構成し、シ
ステムプレートを大口径吸排気孔に押し付ける作動を、
システムプレートの自重のほかシステムプレートを大口
径吸排気孔に向けて押し上げる付勢機構の力により、弁
箱内の内圧と外気圧とのバランスを人為的に調整し、シ
ステムプレートによる大口径吸排気孔の閉鎖基準圧を大
気圧と内圧との均衡点に設定して、弁箱内に大気圧を超
える内圧がある限り大口径吸排気孔は閉じたままとし
た。SUMMARY OF THE INVENTION The present invention has been made in view of the above-described circumstances, and has been made in response to the above circumstances. The operation of pressing against the intake and exhaust holes,
In addition to the weight of the system plate, the balance between the internal pressure and the outside air pressure in the valve box is artificially adjusted by the force of the urging mechanism that pushes the system plate toward the large-diameter intake / exhaust hole. The closing reference pressure was set to the equilibrium point between the atmospheric pressure and the internal pressure, and the large-diameter intake / exhaust port was kept closed as long as the internal pressure in the valve box exceeded the atmospheric pressure.
【００１１】また、フロート弁体の底部に傾斜面を形成
し、該傾斜面にそって通水口に対応する凹陥部を設ける
ようにして、フロート弁体の下降時に本管からの通水吸
排気構造の閉塞を防止すると共に、通水吸排気が凹陥部
に案内されて円滑に上昇できるようにした。これによ
り、フロート弁体について弁体ケースやフロート弁体受
けを設ける必要がなくなり、フロート弁体の自由な遊動
状態を確保することができた。Further, an inclined surface is formed at the bottom of the float valve body, and a concave portion corresponding to the water inlet is provided along the inclined surface, so that when the float valve body descends, water is sucked and exhausted from the main pipe. The structure is prevented from being clogged, and the water intake / exhaust gas is guided to the concave portion so as to be able to rise smoothly. As a result, there is no need to provide a valve body case or a float valve body receiver for the float valve body, and a free floating state of the float valve body can be secured.
【００１２】更に、弁蓋の外周部に嵌合溝を設けると共
に、該嵌合溝に嵌合して弁蓋の外周面に突面を形成する
嵌合リングを嵌合し、該突面と嵌合する凹陥溝を嵌合部
内径に設けた屈曲吸排気キャップを嵌合リングを介して
回動可能に嵌着するようにして、空気弁の設定後に吸排
気を特定方向に導くためのキャップの屈曲方向を自由に
設定したり変更したりできるようにした。Further, a fitting groove is provided on the outer peripheral portion of the valve cover, and a fitting ring that fits into the fitting groove to form a projecting surface on the outer peripheral surface of the valve cover is fitted. A cap for guiding air intake and exhaust in a specific direction after setting the air valve by fitting a bent intake / exhaust cap provided with a concave groove to be fitted on the inner diameter of the fitting portion so as to be rotatable via a fitting ring. The bending direction of can be set or changed freely.
【００１３】[0013]
【作用】システムプレート11は、大口径吸排気孔31に向
けて押し上げる方向に付勢された付勢機構２と自重との
バランスによって基準圧を大気圧と内圧との均衡点に設
定され、弁内に負圧を生じると大口径吸排気孔31は負圧
の値に応じて適度に開放され、弁箱内に大気圧と同一、
若しくはそれを超える内圧がある限り大口径吸排気孔は
閉じたままの状態にある。The reference pressure is set to the equilibrium point between the atmospheric pressure and the internal pressure by the balance between the biasing mechanism 2 urged in the direction of pushing up toward the large-diameter intake / exhaust hole 31 and the own weight. When a negative pressure is generated, the large-diameter intake / exhaust hole 31 is appropriately opened according to the value of the negative pressure, and the same as the atmospheric pressure in the valve box.
Or, as long as the internal pressure exceeds that, the large-diameter intake / exhaust hole is kept closed.
【００１４】したがって、充水時に送水管内にある空気
が弁内に送られても大口径吸排気孔31はそのまま閉鎖状
態にあり、開放状態にある小口径吸排気孔12から、弁内
に送られた空気は排出される。Therefore, even when the air in the water pipe is sent into the valve when the water is filled, the large-diameter intake / exhaust hole 31 is kept closed, and is sent into the valve from the small-diameter intake / exhaust hole 12 in the open state. Air is exhausted.
【００１５】そのため、大口径吸排気孔31が閉鎖してい
るから大口径吸排気孔31が閉鎖するときに起こる通水の
外部への流出がなく、システムプレート11の下面に設け
られた凹陥溝18や凹陥19によって排気流速も制限される
のでウォーターハンマー現象も起き難くなる。Therefore, since the large-diameter intake / exhaust hole 31 is closed, there is no outflow of water that occurs when the large-diameter intake / exhaust hole 31 is closed, and the concave groove 18 provided on the lower surface of the system plate 11 Since the exhaust flow velocity is also limited by the recess 19, the water hammer phenomenon is less likely to occur.
【００１６】一方、大口径吸排気孔31が閉じ弁箱内に内
圧がある場合には、送水管から入る空気によって弁箱内
の水位が下がり、フロート弁体４は下降して遊動弁体11
に設けられた小口径吸排気孔12を開放し、弁箱内に充満
した空気は小口径吸排気孔から外部に排出される。On the other hand, when the large-diameter intake / exhaust hole 31 is closed and there is an internal pressure in the valve box, the water level in the valve box is lowered by air entering from the water supply pipe, and the float valve element 4 is lowered to move the floating valve element 11.
The small-diameter intake / exhaust hole 12 provided in the valve box is opened, and the air filled in the valve box is discharged to the outside from the small-diameter intake / exhaust hole.
【００１７】送水管の水抜き時や、何らかの理由で弁箱
内の内圧が負圧となった場合には、付勢機構２の押し上
げ力より負圧とシステムプレート11の重量が勝り、負圧
の大きさに比例して大口径吸排気孔31を排気時より大き
く開き、負圧の力が無くなると大気圧及び内圧ともにゼ
ロとなるので、付勢機構２により大口径吸排気孔31は閉
鎖状態となる。When the water in the water pipe is drained, or when the internal pressure in the valve box becomes negative for some reason, the negative pressure and the weight of the system plate 11 exceed the pushing force of the urging mechanism 2, and the negative pressure The large-diameter intake / exhaust hole 31 is opened larger than when exhausting in proportion to the size of the exhaust, and when the negative pressure is eliminated, both the atmospheric pressure and the internal pressure become zero. Become.
【００１８】[0018]
【発明の実施の形態】以下、図面を参照して本発明にか
かる空気弁の実施例を説明する。１は弁箱本体で、上面
は大口径吸排気孔31を備えた弁蓋３で覆蓋されており、
弁蓋３の下部には小口径吸排気孔12を備えたシステムプ
レート11がスプリングなどの付勢機構２によって支持さ
れている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an air valve according to the present invention will be described below with reference to the drawings. 1 is a valve box main body, the upper surface of which is covered with a valve lid 3 having a large-diameter intake / exhaust hole 31;
A system plate 11 having a small-diameter intake / exhaust hole 12 is supported below the valve lid 3 by a biasing mechanism 2 such as a spring.
【００１９】弁蓋３の下面には、Ｏリング32が設定さ
れ、弁箱内の内圧により付勢機構２の押し上げ力がシス
テムプレート11の重量を凌ぐと、システムプレート11が
押し上げられてその上面がＯリング32と密着して大口径
吸排気孔を閉塞密閉するようになっている。On the lower surface of the valve cover 3, an O-ring 32 is set, and when the pushing force of the urging mechanism 2 exceeds the weight of the system plate 11 due to the internal pressure in the valve box, the system plate 11 is pushed up and its upper surface. The close contact with the O-ring 32 closes and seals the large-diameter intake / exhaust hole.
【００２０】システムプレート11は四方に張出部14が張
り出して付勢機構２のスプリングを弁箱１の内壁段部15
と共に支持するとともに、これによって形成される間隙
16が大口径吸排気孔31への通路を形成する。また、その
上面は小口径吸排気孔12からの吸排気等を排気路に導く
排気溝13を除いて平滑に構成され、弁蓋３の下面に設定
されたＯリング32が圧接されると密着するようになって
いる。The system plate 11 has projecting portions 14 projecting in all directions so that the springs of the urging mechanism 2 are connected to the inner wall step 15 of the valve box 1.
Together with the gap formed thereby
16 forms a passage to the large-diameter intake / exhaust hole 31. Further, the upper surface thereof is formed smooth except for an exhaust groove 13 for guiding intake and exhaust from the small-diameter intake and exhaust holes 12 to the exhaust path, and comes into close contact with an O-ring 32 set on the lower surface of the valve cover 3 when pressed. It has become.
【００２１】システムプレート11の下面にはユニット化
された小口径吸排気孔12を螺合する螺合部17が設けられ
るとともに、多量の空気や水勢をブロックする凹陥溝18
と凹陥19が設定され、過度な圧力がシステムプレート11
に掛からないようになっている。On the lower surface of the system plate 11, a screwing portion 17 for screwing the unitized small-diameter intake / exhaust hole 12 is provided, and a concave groove 18 for blocking a large amount of air or water force.
And recess 19 is set, excessive pressure will cause system plate 11
It is designed not to hang on.
【００２２】また、弁蓋３の外周部には嵌合溝33が設け
られ、外周面に突面を形成する嵌合リング34が嵌合さ
れ、これによって形成された突面と嵌合する凹陥溝52を
嵌合部51の内径に設けた屈曲吸排気キャップ５を嵌合リ
ング34を介して回動可能に嵌着するようになっている。A fitting groove 33 is provided on the outer peripheral portion of the valve cover 3, and a fitting ring 34 forming a protruding surface is fitted on the outer peripheral surface. A bent suction / exhaust cap 5 having a groove 52 provided on the inner diameter of the fitting portion 51 is rotatably fitted via a fitting ring 34.
【００２３】嵌合リング34には、断裂部が設けられて凹
陥溝52への嵌合がし易く構成されると共に、素材として
リン青銅などが用いられて嵌着される屈曲吸排気キャッ
プ５の抜け防止と円滑な回動効果を付与するようになっ
ている。また、嵌合リング34の上部にはＯリング35が付
設されて弁蓋３とキャップ５の嵌着に気密性を保つよう
にしている。The fitting ring 34 is provided with a rupture portion so as to be easily fitted into the concave groove 52, and the bent suction / exhaust cap 5 is fitted using phosphor bronze or the like as a material. It is designed to prevent slipping and provide a smooth turning effect. Further, an O-ring 35 is attached to the upper part of the fitting ring 34 so as to keep the fitting of the valve cover 3 and the cap 5 airtight.
【００２４】更に、システムプレート11の偏心位置には
小口径吸排気孔12が設けられ、小口径吸排気孔12の下端
はフロート弁体４の着座する弁座41に構成され、その弁
箱内壁側一側にフロート弁体４の浮動を案内するガイド
杆42が植設されている。Further, a small-diameter intake / exhaust hole 12 is provided at an eccentric position of the system plate 11, and a lower end of the small-diameter intake / exhaust hole 12 is formed in a valve seat 41 on which the float valve body 4 is seated. A guide rod 42 for guiding the float valve body 4 to float is provided on the side.
【００２５】フロート弁体４は逆円錐台形状など浮動作
動に影響のない形状に構成され、上部一側にはガイド杆
42と嵌合する嵌合孔ないし溝に構成された嵌合部43が設
けられ、弁箱内の水位により弁座41とフロート弁体４の
接触部を支点としてフロート弁体４が傾斜し、或いは昇
降して小口径吸排気孔12の開閉を行う。The float valve element 4 is formed in a shape that does not affect the floating operation, such as an inverted truncated cone, and has a guide rod on one upper side.
A fitting portion 43 formed in a fitting hole or a groove to be fitted with 42 is provided, and the float valve body 4 inclines with the contact portion between the valve seat 41 and the float valve body 4 as a fulcrum according to the water level in the valve box, Alternatively, the small-diameter intake / exhaust hole 12 is opened and closed by moving up and down.
【００２６】44はフロート弁体４の底部に形成された傾
斜面で、この傾斜面44にそって送水管からの通水口６に
対応する凹陥部45を設けることにより、フロート弁体４
の下降時に傾斜面44が底面に間隙を形成して本管からの
通水吸排気構造の閉塞を防止すると共に、通水口６から
の通水吸排気が凹陥部45に案内されて円滑に上昇できる
ものである。Reference numeral 44 denotes an inclined surface formed at the bottom of the float valve body 4. A concave portion 45 corresponding to the water inlet 6 from the water supply pipe is provided along the inclined surface 44 so that the float valve body 4 is provided.
The inclined surface 44 forms a gap at the bottom when the water is lowered to prevent the water suction / exhaust structure from being blocked from the main pipe, and the water suction / exhaust from the water inlet 6 is guided by the concave portion 45 to smoothly rise. You can do it.
【００２７】[0027]
【発明の効果】本発明は上記のように構成したので、送
水管からの通水口６から通水と共に導入される混入空気
は弁箱上部に貯留されて弁箱内の水位を下げ、水位がフ
ロート弁体４をガイド杆42を支点に傾斜下降させて小口
径吸排気孔12を開口してそこから貯留された混入空気は
排出され、給気等により弁箱１内に負圧を生じると大口
径吸排気孔31が負圧の大きさに応じて開口される。Since the present invention is constructed as described above, the mixed air introduced together with water through the water inlet 6 from the water supply pipe is stored in the upper part of the valve box to lower the water level in the valve box. The float valve body 4 is tilted down with the guide rod 42 as a fulcrum to open the small-diameter intake / exhaust hole 12, and the stored mixed air is discharged therefrom. If a negative pressure is generated in the valve box 1 by air supply or the like, a large pressure is generated. The diameter suction / exhaust hole 31 is opened according to the magnitude of the negative pressure.
【００２８】また、送水管の水抜き後の再給水時など多
量の空気が弁箱内に導入されたときは、弁箱１への充水
時に充水に対応して小口径吸排気孔12により排出され、
弁箱内の内圧に応じて吸排気孔の開閉、開口面積の制御
が行われるので、排出時における空気の流速を抑えるこ
とができ、また、外部への水の流出を防止できる。Also, when a large amount of air is introduced into the valve box, such as when water is resupplied after drainage of the water supply pipe, when the valve box 1 is filled with water, the small-diameter intake / exhaust holes 12 are used to fill the valve box 1 with water. Discharged,
Since opening and closing of the intake and exhaust holes and control of the opening area are performed in accordance with the internal pressure in the valve box, the flow velocity of air at the time of discharge can be suppressed, and the outflow of water to the outside can be prevented.
【００２９】弁箱内の水位が低下した場合に生ずる弁箱
内の気圧低下は、上記の大口径吸排気孔31が空気の排出
時より大きく開口する吸気作用によって回復されるか
ら、弁箱内の急激な気圧変化が回避できる。The pressure drop in the valve box caused when the water level in the valve box decreases is restored by the suction action in which the large-diameter intake / exhaust hole 31 is opened larger than when air is discharged. A sudden change in air pressure can be avoided.
【００３０】大口径吸排気孔31が閉鎖されるのは、弁箱
内に水がある状態或いは一度閉鎖された後、弁箱内に内
圧がある場合であるが、その時点では弁箱内に空気が入
ると水位が低下するのでフロート弁体４が下降し小口径
吸排気孔12が開口して弁箱内の空気を排出する。The large-diameter intake / exhaust hole 31 is closed when there is water in the valve box or when there is an internal pressure in the valve box after being closed once. When the water enters, the water level decreases, so that the float valve body 4 descends, and the small-diameter intake / exhaust hole 12 is opened to discharge the air in the valve box.
【００３１】以上により、従来問題となっていた急速排
気時における水の噴き上げ現象、管内滞留空気によるウ
ォーターハンマー現象の増幅及び大口径吸排気孔閉鎖時
に起こるウォーターハンマー現象を回避でき、更に大き
な吸気性能を持つことができるものである。As described above, it is possible to avoid the water spouting phenomenon at the time of rapid exhaustion, the amplification of the water hammer phenomenon due to the air staying in the pipe, and the water hammer phenomenon that occurs at the time of closing the large-diameter intake / exhaust hole. Something you can have.
【図１】 本発明の実施例を示すもので、充水初期にフ
ロート弁体が下降し小口径吸排気孔が開口して弁箱内の
空気を排出する状態における空気弁の縦断側面図FIG. 1 shows an embodiment of the present invention, and is a vertical sectional side view of an air valve in a state where a float valve body is lowered at an initial stage of water filling, a small-diameter intake / exhaust hole is opened, and air in a valve box is discharged.
【図２】 同じく、満水静止時における空気弁の縦断側
面図[FIG. 2] Similarly, a vertical side view of the air valve when the water is full.
【図３】 同じく、通水と共に導入される混入空気によ
りフロート弁体が傾斜下降して小口径吸排気孔を開口す
る状態における空気弁の縦断側面図FIG. 3 is a vertical cross-sectional side view of the air valve in a state where the float valve body is tilted down by the mixed air introduced together with the water flow to open a small-diameter intake / exhaust hole.
【図４】 同じく、給気等により弁箱内に負圧を生じて
大口径吸排気孔が開口された状態における空気弁の縦断
側面図FIG. 4 is a vertical sectional side view of the air valve in a state where a large-diameter intake / exhaust hole is opened by generating a negative pressure in the valve box due to air supply or the like.
【図５】 同じく、システムプレートの縦断側面図FIG. 5 is a longitudinal side view of the system plate.
【図６】 同じく、システムプレートの底面図FIG. 6 is also a bottom view of the system plate.
１ 弁箱 11 システムプレート 12 小口径吸排気孔 13 吸排気等を排気路に導く排気溝 14 システムプレートの張出部 15 弁箱の内壁段部 16 間隙 17 小口径吸排気孔を螺合する螺合部 18 凹陥溝 19 凹陥部 ２ 遊動弁体の付勢機構 ３ 弁蓋 31 大口径吸排気孔 32 Ｏリング 33 弁蓋外周部の嵌合溝 34 嵌合リング 35 Ｏリング ４ フロート弁体 41 フロート弁体の弁座 42 ガイド杆 43 フロート弁体のガイド杆嵌合部 44 フロート弁体底部の傾斜面 45 フロート弁体底部の凹陥部 ５ 屈曲吸排気キャップ 51 吸排気キャップの嵌合部 52 吸排気キャップの凹陥溝 ６ 送水管からの通水口 1 Valve case 11 System plate 12 Small-diameter intake / exhaust hole 13 Exhaust groove for guiding intake / exhaust etc. to exhaust path 14 Projection part of system plate 15 Inner wall step of valve box 16 Gap 17 Screw-in portion for screwing small-diameter intake / exhaust hole 18 Recessed groove 19 Recessed part 2 Energizing mechanism of floating valve element 3 Valve lid 31 Large-diameter intake / exhaust hole 32 O-ring 33 Fitting groove on outer circumference of valve lid 34 Fitting ring 35 O-ring 4 Float valve element 41 Float valve element Valve seat 42 Guide rod 43 Guide rod fitting part of float valve body 44 Inclined surface of float valve body bottom 45 Concave part of float valve body bottom 5 Bent intake / exhaust cap 51 Fitting part of intake / exhaust cap 52 Concave part of intake / exhaust cap Groove 6 Water inlet from water pipe
フロントページの続き (56)参考文献 特開 平９−189367（ＪＰ，Ａ) 特開 平９−166234（ＪＰ，Ａ) 特開 平６−42661（ＪＰ，Ａ) 特開 平７−280118（ＪＰ，Ａ) 実開 平４−126076（ＪＰ，Ｕ) 特公 昭57−56629（ＪＰ，Ｂ２) 特公 平４−72114（ＪＰ，Ｂ２) 特公 平６−6990（ＪＰ，Ｂ２) 実公 昭63−16944（ＪＰ，Ｙ２) (58)調査した分野(Int.Cl.7，ＤＢ名) F16K 18/00 - 24/06 F16K 47/00 - 47/02 F16K 51/00 Continuation of the front page (56) References JP-A-9-189367 (JP, A) JP-A-9-166234 (JP, A) JP-A-6-42661 (JP, A) JP-A-7-280118 (JP, A) , A) Japanese Utility Model Hei 4-126076 (JP, U) Japanese Patent Publication No. 57-56629 (JP, B2) Japanese Patent Publication No. 4-72114 (JP, B2) Japanese Patent Publication No. 6-6990 (JP, B2) Japanese Patent Publication No. 63-16944 (JP, Y2) (58) Fields investigated (Int. Cl. 7 , DB name) F16K 18/00-24/06 F16K 47/00-47/02 F16K 51/00
Claims (2)
蓋で覆蓋すると共に、その下部に、大口径吸排気孔に向
けて押し上げる機構の付勢力と弁箱内の内圧に対応して
該大口径吸排気孔を開閉するシステムプレートと、該シ
ステムプレートに設けられた小口径吸排気孔を弁箱内の
水位に対応して開閉する底部を傾斜面に形成し該傾斜面
にそって通水口に対応する凹陥部を設けたフロート弁体
とを設け、大口径吸排気孔を開閉するシステムプレート
の作動を押し上げ機構の調整により変化させ、大口径吸
排気孔の閉鎖基準圧の設定を調整可能に構成したことを
特徴とする空気弁An upper surface of a valve box is covered with a valve cover having a large-diameter intake / exhaust hole, and a lower portion thereof is adapted to correspond to an urging force of a mechanism for pushing up toward the large-diameter intake / exhaust hole and an internal pressure in the valve box. and the system plate for opening and closing the large-diameter suction and discharge pores, a bottom portion for opening and closing in response to the water level within the valve box a small径吸exhaust holes provided in the system plate formed on the inclined surface Te inclined surface
A float valve body with a recess corresponding to the water inlet is provided along, and the operation of the system plate that opens and closes the large-diameter intake / exhaust hole is changed by adjusting the lifting mechanism to set the reference pressure for closing the large-diameter intake / exhaust hole. Air valve characterized in that it can be adjusted
嵌合溝に嵌合して弁蓋の外周面に突面を形成する嵌合リ
ングを嵌合し、該突面と嵌合する凹陥溝を嵌合部内径に
設けた屈曲吸排気キャップを嵌合リングを介して回動可
能に嵌着するようにした「請求項１」記載の空気弁 2. A fitting groove is provided on the outer peripheral portion of the valve cover, and a fitting ring that fits into the fitting groove to form a projecting surface on the outer peripheral surface of the valve cover is fitted. 2. The air valve according to claim 1, wherein a bent intake / exhaust cap having a concave groove to be fitted is provided on an inner diameter of the fitting portion so as to be rotatable via a fitting ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10369030A JP3056184B1 (en) | 1998-12-25 | 1998-12-25 | Air valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10369030A JP3056184B1 (en) | 1998-12-25 | 1998-12-25 | Air valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP3056184B1 true JP3056184B1 (en) | 2000-06-26 |
| JP2000193117A JP2000193117A (en) | 2000-07-14 |
Family
ID=18493383
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10369030A Expired - Fee Related JP3056184B1 (en) | 1998-12-25 | 1998-12-25 | Air valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3056184B1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4836654B2 (en) * | 2006-04-28 | 2011-12-14 | 株式会社タブチ | Intake and exhaust valves |
-
1998
- 1998-12-25 JP JP10369030A patent/JP3056184B1/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2000193117A (en) | 2000-07-14 |
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