JP2847058B2 - Air valve - Google Patents
Air valveInfo
- Publication number
- JP2847058B2 JP2847058B2 JP223596A JP223596A JP2847058B2 JP 2847058 B2 JP2847058 B2 JP 2847058B2 JP 223596 A JP223596 A JP 223596A JP 223596 A JP223596 A JP 223596A JP 2847058 B2 JP2847058 B2 JP 2847058B2
- Authority
- JP
- Japan
- Prior art keywords
- valve body
- valve
- exhaust hole
- floating
- diameter intake
- 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)
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、送水によって
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、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つの吸排気孔を閉鎖するが、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であった。2. Description of the Related Art Conventionally, when an internal pressure generated in a valve box by water supply is equal to or lower than an atmospheric pressure, a large-diameter intake / exhaust hole and a small-diameter intake / exhaust hole are opened and the air valve is in an exhaust / exhaust state. However, when the water level in the valve box rises due to the discharge of air, the floating valve body and the float valve body are pushed up to close the two intake / exhaust holes, but as long as the valve box has an internal pressure exceeding atmospheric pressure, the large-diameter intake / exhaust holes are used. Remained closed.
【０００３】そこで送水管内に滞留する空気が弁内に送
られて弁箱内の水位が下がると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り、小口径吸排気孔
が開放されて空気が排出されるようになっている。[0003] When the air remaining in the water pipe is sent into the valve and the water level in the valve box falls, the float valve body closing the small-diameter intake / exhaust hole is lowered to the water surface, and the small-diameter intake / exhaust hole is opened. Air is exhausted.
【０００４】また、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。Further, the operation of pressing the floating valve body against the large-diameter intake / exhaust hole depends on the water level in the valve box, the buoyancy of the floating valve body related thereto 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
のように弁箱内の水位に重点を置き、弁箱内に貯留され
る空気の圧力や吸着作用に対する対応は、専ら遊動弁体
に設けられた小口径吸排気孔の吸気作用に依存してい
る。As described above, the conventional pneumatic valve places an emphasis on the water level in the valve box, and only responds to the pressure and the adsorbing action of the air stored in the valve box by the floating valve element. At the intake port of the small-diameter intake / exhaust hole provided in the intake port.
【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】弁箱の上面を、大口径吸排気孔を備えた弁
蓋で覆蓋すると共に、大口径吸排気孔を開閉する遊動弁
体と、該遊動弁体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フロート弁体と、該フロート
弁体の浮動規制機構を設けて成る空気弁は、構造が複雑
なうえに部品点数が多く、部品点数を減少させることも
課題である。[0008] An upper surface of the valve box is covered with a valve lid having a large-diameter intake / exhaust hole, and a floating valve body for opening and closing the large-diameter intake / exhaust hole, and a small-diameter intake / exhaust hole provided in the floating valve body are provided in the valve box. The float valve body that opens and closes in accordance with the water level in the air, and the air valve that is provided with the float restriction mechanism of the float valve body has a complicated structure, a large number of parts, and a problem of reducing the number of parts. is there.
【０００９】また、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 has a structure in which the float valve element requires a considerably free floating state below the floating valve element, and the passage of water through 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.
【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の作動を、常時は大口径吸排気孔
からの排気量をゼロとし、弁箱内の水が溢出しない程度
に吸排気孔がバランス開放されるように設定して弁箱内
に負圧を生じさせない吸気が行われるようにすることに
より、課題を解決したものである。SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has been made in response to the above circumstances. The operation of the idler valve that opens and closes a large-diameter intake / exhaust hole is normally performed by using the large-diameter intake / exhaust hole. Solving the problem by setting the exhaust volume to zero and setting the intake and exhaust holes to be balanced so that the water in the valve box does not overflow, so that air intake that does not generate negative pressure in the valve box is performed It was done.
【００１１】また、遊導弁体を大口径吸排気孔に押し付
ける作動を、遊導弁体の自重のほか遊動弁体を大口径吸
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できるよう
に構成した。The operation of pressing the idler valve body against the large-diameter intake / exhaust hole is performed by the force of the urging mechanism that pushes the idle valve body toward the large-diameter intake / exhaust hole in addition to the weight of the idler valve body. The balance between the internal pressure and the external pressure can be adjusted artificially.
【００１２】更に、フロート弁体の浮動規制を行うフロ
ート受けを遊動弁体に固定し、このフロート受けを弁箱
の内壁に設けた案内体によって移動規制するようにして
構造の単純化と組立ての効率化を図った。Further, a float receiver for regulating the float of the float valve body is fixed to the floating valve body, and the movement of the float receiver is regulated by a guide provided on the inner wall of the valve box, thereby simplifying the structure and assembling the structure. Efficiency was improved.
【００１３】更に、他の対応としてフロート弁体の浮動
規制を行うフロート受けを弁箱内壁に固定し、遊動弁体
とフロート受けを切り離して構造の単純化と組立ての効
率化を図った。Further, as another measure, a float receiver for regulating the float of the float valve body is fixed to the inner wall of the valve box, and the floating valve body and the float receiver are separated to simplify the structure and increase the efficiency of assembly.
【００１４】いま１つの対応としては、遊動弁体を大口
径吸排気孔に向けて押し上げる付勢機構としてダイヤフ
ラムの面弾性を用い、膜面による自然な吸排気を期する
とともに部品点数の減少と構造の単純化を図った。Another measure is to use the surface elasticity of the diaphragm as a biasing mechanism for pushing up the floating valve body toward the large-diameter intake / exhaust hole, to achieve natural intake / exhaust by the membrane surface, reduce the number of parts, and reduce the number of parts. Was simplified.
【００１５】[0015]
【作用】遊動弁体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、常時は大口径吸排気孔31の適度な開放状態を
保ち、弁箱内は自然な吸排気状態にある。The floating valve body 11 always keeps the large-diameter intake / exhaust hole 31 in an appropriate open state by the balance between the biasing mechanism 2 urged in the direction of pushing up toward the large-diameter intake / exhaust hole 31 and its own weight. The inside of the valve box is in a natural intake / exhaust state.
【００１６】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が適度な開放状態
にあるときには空気はそのまま排出され、大口径吸排気
孔31が閉鎖状態にあるときは小口径吸排気孔12が開放状
態にあるから、空気はそこから排出される。Therefore, even if the air in the water pipe is fed into the valve at the time of water filling, when the large-diameter intake / exhaust hole 31 is in an appropriate open state, the air is discharged as it is, and the large-diameter intake / exhaust hole 31 is in the closed state. At this time, since the small-diameter intake / exhaust hole 12 is in an open state, air is discharged therefrom.
【００１７】次に空気が排出され水が弁箱内に浸入する
と、付勢機構２及び浮力によって遊動弁体11が押し上げ
られ、大口径吸排気孔31が閉鎖す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、
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。Next, when air is discharged and water enters the valve box, the floating valve body 11 is pushed up by the urging mechanism 2 and buoyancy, and the large-diameter intake / exhaust hole 31 is closed.
No outflow of water that occurs when 31 closes,
Since the exhaust velocity is also limited, the water hammer phenomenon is less likely to occur.
【００１８】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 body 4 is lowered to move the floating valve body 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.
【００１９】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
げ力より負圧と遊動弁体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付勢機構２により大口径吸排気孔
31は適度な開放状態あるいは閉鎖状態となる。When draining the water supply pipe or when the internal pressure in the valve box becomes negative for some reason, the negative pressure and the weight of the floating valve body 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 magnitude of the pressure,
When the negative pressure is lost, the large-diameter intake / exhaust hole is activated by the biasing mechanism 2.
31 is in an appropriate open or closed state.
【００２０】[0020]
【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を備えた遊動弁体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 floating valve body 11 having a small-diameter intake / exhaust hole 12 in the lower part of the valve lid 3.
Are supported by a biasing mechanism 2 such as a spring.
【００２１】また、大口径吸排気孔31の下部には、Ｏリ
ング、ガスケットなどの漏水防止材により弁座32が構成
され、弁箱内の内圧により付勢機構２の押し上げ力が遊
動弁体11の重量を凌ぐと、遊動弁体11が押し上げられて
着座し大口径吸排気孔を閉塞するようになっている。A valve seat 32 is formed below the large-diameter intake / exhaust hole 31 by a water leakage prevention material such as an O-ring or a gasket, and the pushing force of the urging mechanism 2 is increased by the internal pressure in the valve box. When the weight exceeds the weight, the floating valve body 11 is pushed up and seated to close the large-diameter intake / exhaust hole.
【００２２】更に、遊動弁体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 floating valve body 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 implanted on one side.
【００２３】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 groove for fitting with 42 is provided, and the float valve body 4 inclines with a contact point 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.
【００２４】44はフロート弁体４の浮動規制を行うフロ
ート受けで、図１に示すように遊動弁体11に固定し、こ
のフロート受け44を弁箱１の内壁に設けた案内体13によ
って移動規制するか、図３、図４に示すように遊動弁体
11とは切離して弁箱１の内壁に設けた支持腕14によって
弁箱内に固定する。Reference numeral 44 denotes a float receiver for regulating the floating of the float valve element 4. The float receiver 44 is fixed to the floating valve element 11 as shown in FIG. 1 and is moved by the guide 13 provided on the inner wall of the valve box 1. Restricting or as shown in FIGS. 3 and 4
11 and is fixed in the valve box by a support arm 14 provided on the inner wall of the valve box 1.
【００２５】フロート受けの底部には、通水孔45が穿設
され送水管から混入空気とともに導入される水が容易に
フロート受け44内に浸入してフロート弁体４の作動を促
すようになっている。A water hole 45 is formed at the bottom of the float receiver, and water introduced together with the air mixed in from the water supply pipe easily penetrates into the float receiver 44 to promote the operation of the float valve body 4. ing.
【００２６】図３に示す実施例は、遊動弁体11を大口径
吸排気孔31に向けて押し上げる付勢機構２としてダイヤ
フラム21を用いるようにしたもので、遊動弁体11は弁箱
１の上面と大口径吸排気孔31を備えた弁蓋３の間に張設
したダイヤフラム21と小口径吸排気孔12等の機構を備え
たシステムプレート22によって構成される。In the embodiment shown in FIG. 3, the diaphragm 21 is used as the urging mechanism 2 for pushing the floating valve body 11 toward the large-diameter intake / exhaust hole 31. The floating valve body 11 is provided on the upper surface of the valve box 1. And a system plate 22 having a mechanism such as a diaphragm 21 stretched between the valve lid 3 having a large-diameter intake / exhaust hole 31 and a small-diameter intake / exhaust hole 12.
【００２７】システムプレート22は、着合杆23によって
ダイヤフラム21に着合固定されており、大口径吸排気孔
31のバランス開放は、ダイヤフラム21の弾性とシステム
プレート22の重量とのバランスによって行われる。The system plate 22 is fixedly fitted to the diaphragm 21 by a fitting rod 23, and has a large-diameter intake / exhaust hole.
The release of the balance of 31 is performed by the balance between the elasticity of the diaphragm 21 and the weight of the system plate 22.
【００２８】すなわち、ダイヤフラム21はシステムプレ
ート22の重量によって適度に垂下されるので、ダイヤフ
ラム21に設けられた通気孔25は弁蓋３の間隙を通じて開
口し適度な通気性を保持するものである。24はダイヤフ
ラム21の付勢力を補充するスプリングで、ダイヤフラム
21の弾性力が強力なものであるときは、敢えて設備する
必要はない。That is, since the diaphragm 21 is appropriately hung down by the weight of the system plate 22, the ventilation hole 25 provided in the diaphragm 21 is opened through the gap of the valve cover 3 to maintain an appropriate air permeability. Reference numeral 24 denotes a spring that replenishes the biasing force of the diaphragm 21.
When the elasticity of 21 is strong, there is no need to install equipment.
【００２９】５は弁蓋３の上面を覆うボンネットカバー
であり、大きく開口する大口径吸排気孔31を被覆して塵
埃等の侵入を防止すると共に、通気孔51を通じて外気と
の接触を図っている。Reference numeral 5 denotes a bonnet cover for covering the upper surface of the valve cover 3, which covers a large-diameter large-diameter intake / exhaust hole 31 to prevent the entry of dust and the like, and also makes contact with the outside air through a vent hole 51. .
【００３０】[0030]
【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、バランス開放される大口径吸排気孔31の間隙、或い
はダイヤフラム21に設けられた通気孔25及び小口径吸排
気孔12から排出される。Since the present invention is constructed as described above, the mixed air introduced together with the water from the water inlet 6 from the water pipe is supplied to the gap of the large-diameter intake / exhaust hole 31 or the diaphragm 21 which is opened. The air is discharged from the provided ventilation holes 25 and the small-diameter intake / exhaust holes 12.
【００３１】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小口径吸排気孔12
により送水管への充水時に排出され、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る。When a large amount of air is introduced into the valve box, for example, when water is supplied again after drainage of the water supply pipe, the small-diameter intake / exhaust hole 12 is used.
Is discharged when the water pipe is filled with water, and the opening and closing of the intake and exhaust holes and the opening area are controlled according to the internal pressure in the valve box.
The flow velocity of air at the time of discharge can be suppressed.
【００３２】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 recovered by the suction action in which the large-diameter intake / exhaust hole 31 is opened more than when air is discharged. A sudden change in air pressure can be avoided.
【００３３】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 internal pressure in the valve box after the valve box has been 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.
【００３４】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 spraying 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１実施例で遊動弁体にフロート受け
を固定した実施例による空気弁の満水静止時における縦
断側面図FIG. 1 is a longitudinal sectional side view of an air valve according to an embodiment of the present invention in which a float receiver is fixed to a floating valve body when the air valve is at full water stoppage.
【図２】 同実施例による、水位が下がりフロート弁体
が傾斜下降し小口径吸排気孔が開口し始めた状態の縦断
側面図FIG. 2 is a longitudinal sectional side view of the embodiment, in which a water level is lowered, a float valve body is tilted down, and a small-diameter intake / exhaust hole is opening.
【図３】 本発明の他の実施例で、弁箱内壁の支持腕に
フロート受けを固定した実施例による空気弁の縦断側面
図FIG. 3 is a longitudinal sectional side view of an air valve according to another embodiment of the present invention in which a float receiver is fixed to a support arm of an inner wall of a valve box.
【図４】 本発明の他の実施例で、遊動弁体をダイヤフ
ラムとシステムプレートを着合して構成した実施例によ
る空気弁の縦断側面図FIG. 4 is a longitudinal sectional side view of an air valve according to another embodiment of the present invention, in which the floating valve body is constructed by fitting a diaphragm and a system plate.
１ 弁箱 11 遊動弁体 12 小口径吸排気孔 13 弁箱内壁のフロート受け案内体 14 弁箱内壁のフロート受け支持腕 ２ 遊動弁体の付勢機構 21 ダイヤフラム 22 システムプレート 23 着合杆 24 ダイヤフラム付勢力の補充付勢スプリング 25 ダイヤフラムの通気孔 ３ 弁蓋 31 大口径吸排気孔 32 遊動弁体の弁座 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 フロート受け 45 フロート受けの底部通水孔 ５ ボンネットカバー 51 ボンネットカバー通気孔 ６ 送水管からの通水口 DESCRIPTION OF SYMBOLS 1 Valve box 11 Floating valve body 12 Small-diameter intake / exhaust hole 13 Float receiving guide on inner wall of valve box 14 Float receiving support arm on inner wall of valve box 2 Energizing mechanism of floating valve element 21 Diaphragm 22 System plate 23 Connecting rod 24 With diaphragm Replenishing biasing spring 25 Ventilation hole of diaphragm 3 Valve lid 31 Large-diameter intake / exhaust hole 32 Valve seat of floating valve body 4 Float valve body 41 Valve seat of float valve body 42 Guide rod 43 Guide rod fitting part of float valve body 44 Float receiver 45 Bottom water hole of float receiver 5 Bonnet cover 51 Bonnet cover ventilation hole 6 Water inlet from water pipe
Claims (5)
蓋で覆蓋すると共に、その下部に弁箱内の内圧に対応し
て該大口径吸排気孔を開閉する遊動弁体と、該遊動弁体
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
開閉するフロート弁体と、該フロート弁体の浮動規制機
構を設け、更に、大口径吸排気孔を開閉する遊動弁体の
作動を、遊動弁体のバランス構造により常時は吸気状態
を維持する程度にバランス開放されるように設定したこ
とを特徴とする空気弁A floating valve body for covering an upper surface of a valve box with a valve lid having a large-diameter intake / exhaust hole, and opening and closing the large-diameter intake / exhaust hole at a lower portion thereof in response to an internal pressure in the valve box; A float valve body that opens and closes a small-diameter intake / exhaust hole provided in the floating valve body in accordance with a water level in a valve box; and a floating mechanism that opens and closes a large-diameter intake / exhaust hole provided with a floating regulating mechanism for the float valve body. Valve body
An air valve characterized in that the operation is set so that the balance is released to such an extent that the intake state is always maintained by the balance structure of the floating valve body.
開放を、遊動弁体の自重と遊動弁体を大口径吸排気孔に
向けて押し上げる機構の付勢力とのバランスによって行
うようにした「請求項１」記載の空気弁2. The large-diameter intake / exhaust hole is released from the balance by the floating valve body by a balance between the weight of the floating valve body and the urging force of a mechanism for pushing the floating valve body toward the large-diameter intake / exhaust hole. The air valve according to item 1)
備えた弁蓋の間に張設したダイヤフラムと小口径吸排気
孔等の機構を備えたシステムプレートによって構成し、
遊動弁体による大口径吸排気孔のバランス開放を、ダイ
ヤフラムの弾性とシステムプレートの重量とのバランス
によって行うようにした「請求項１」記載の空気弁3. A floating valve body comprising a diaphragm stretched between an upper surface of a valve box and a valve lid having a large-diameter intake / exhaust hole, and a system plate having a mechanism such as a small-diameter intake / exhaust hole.
The air valve according to claim 1, wherein the opening of the large-diameter intake / exhaust hole by the floating valve body is released by the balance between the elasticity of the diaphragm and the weight of the system plate.
制を行う案内枠を固定し、この案内枠を弁箱の内壁に設
けた案内体によって移動規制するようにした「請求項
２」又は「請求項３」記載の空気弁4. A guide frame for controlling the floating of the float valve body is fixed below the floating valve body, and the guide frame is restricted from moving by a guide body provided on the inner wall of the valve box. Or the pneumatic valve according to claim 3.
箱の内壁に設定した支持腕によって固定するようにした
「請求項２」又は「請求項３」記載の空気弁5. The air valve according to claim 2, wherein the guide frame for controlling the floating of the float valve body is fixed by a support arm set on the inner wall of the valve box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP223596A JP2847058B2 (en) | 1996-01-10 | 1996-01-10 | Air valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP223596A JP2847058B2 (en) | 1996-01-10 | 1996-01-10 | Air valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09189367A JPH09189367A (en) | 1997-07-22 |
| JP2847058B2 true JP2847058B2 (en) | 1999-01-13 |
Family
ID=11523698
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP223596A Expired - Fee Related JP2847058B2 (en) | 1996-01-10 | 1996-01-10 | Air valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2847058B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4497604B2 (en) * | 1999-11-08 | 2010-07-07 | 旭有機材工業株式会社 | Air valve |
| KR101010900B1 (en) * | 2010-10-20 | 2011-01-25 | (주) 삼진정밀 | Air valve of discharge valve |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5557778A (en) * | 1978-10-20 | 1980-04-28 | Maezawa Kiyuusou Kogyo Kk | Air valve |
| JPS63266283A (en) * | 1987-04-22 | 1988-11-02 | Maezawa Kiyuusou Kogyo Kk | Small-sized high speed air valve |
| JPH0349477U (en) * | 1989-09-22 | 1991-05-14 |
-
1996
- 1996-01-10 JP JP223596A patent/JP2847058B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH09189367A (en) | 1997-07-22 |
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