JP2516580Y2 - Lever type compound air valve - Google Patents
Lever type compound air valveInfo
- Publication number
- JP2516580Y2 JP2516580Y2 JP1991061811U JP6181191U JP2516580Y2 JP 2516580 Y2 JP2516580 Y2 JP 2516580Y2 JP 1991061811 U JP1991061811 U JP 1991061811U JP 6181191 U JP6181191 U JP 6181191U JP 2516580 Y2 JP2516580 Y2 JP 2516580Y2
- Authority
- JP
- Japan
- Prior art keywords
- valve
- float
- valve seat
- main float
- sub
- 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]
【産業上の利用分野】この考案は、水道用等の管に設け
る空気弁であって、小弁口をてこ作用で開閉する主浮子
の中に大弁口を開閉する副浮子を収納したてこ式複合空
気弁に関する。BACKGROUND OF THE INVENTION This invention relates to an air valve provided in a pipe for water supply or the like, in which a sub-float for opening and closing a large valve opening is housed in a main float for opening and closing a small valve opening by leverage. Type composite air valve.
【０００２】[0002]
【従来の技術】てこ式複合空気弁に関する従来技術は、
特公昭５７−５６６２９号に示されている。このもの
は、大弁口を開閉する球形の副浮子と、小弁口を開閉す
る環体の主浮子とを組合わせたもので、空の管にはじめ
て送水するときには、管内の空気を大弁口と小弁口から
排気する。その後弁室は充水して大弁口と小弁口は各々
閉弁する。次に管内水に混入する空気が弁室を満たして
主浮子、副浮子とも浮力を消失する。そのとき副浮子は
水圧によって大弁口に押し付けられたままであって降
下、開弁することができないが、主浮子は水圧のもとに
おいても降下して小弁口を開弁、排気することができ
る。小弁口の開口面積が極めて小さく、しかもてこ力を
利用しているので、水圧のもとでも主浮子は作動するの
である。2. Description of the Related Art The prior art relating to a lever type compound air valve is as follows.
It is shown in Japanese Examined Patent Publication No. 57-56629. This is a combination of a spherical sub-float that opens and closes the large valve opening and a main float that is a ring that opens and closes the small opening. Exhaust through mouth and small valve mouth. After that, the valve chamber is filled with water and the large valve opening and the small valve opening are closed. Next, the air mixed in the water in the pipe fills the valve chamber and loses the buoyancy in both the main and sub-floats. At that time, the sub-float cannot be lowered and opened because it is still pressed against the large valve opening by water pressure, but the main float can be lowered even under water pressure to open and exhaust the small valve opening. it can. Since the opening area of the small valve opening is extremely small and the leverage is utilized, the main float operates even under water pressure.
【０００３】しかしながら、排気量が多いときに、副浮
子が空気流で吹き上げられ、その後は管内の圧力によっ
て副浮子は大弁口を押し付けたままとなり、管内に大量
の空気を残すことがある。However, when the displacement is large, the sub-float is blown up by the air flow, and thereafter, the sub-float remains pressed against the large valve opening due to the pressure in the pipe, and a large amount of air may remain in the pipe.
【０００４】副浮子が空気流で吹き上げられることのな
いものとして、特開昭６３−２６６２８２号がある。こ
れは窓孔を有する浮子容器の中に主浮子と副浮子を収納
して、両浮子が流入口からの空気流を直接受けることが
ないようにしたものである。ところが浮子容器を用いる
と、構造が複雑、大型になる。Japanese Patent Application Laid-Open No. 63-266282 discloses a sub-float that is not blown up by an air flow. This is a device in which a main float and a sub-float are housed in a float container having a window so that both floats do not receive the air flow from the inflow port directly. However, when the float container is used, the structure becomes complicated and large.
【０００５】[0005]
【考案が解決しようとする課題】課題は、主浮子内に副
浮子を収納するてこ式複合空気弁で、浮子容器を用いる
ことなく、流入口からの空気流が副浮子に直接当たらぬ
ようにすることである。[Problems to be Solved by the Invention] The problem is a lever-type compound air valve for accommodating a sub-float in a main float, so that the air flow from the inlet does not directly hit the sub-float without using a float container. It is to be.
【０００６】[0006]
【課題を解決するための手段】本考案は、下部に管路か
らの流入口を有する弁筒と、この弁筒の上部に取付けら
れて、中央に大弁座を有し、偏心位置で大弁座より下側
に小弁座を有し、さらに該小弁座より外側に支点を有す
る弁蓋と、前記の弁筒内に上下動自在に収納されて前記
の支点を中心に揺動して前記小弁座を開閉する逆円錐台
形の主浮子と、該主浮子の中央に穿設される穴室に上下
動自在に収納されて前記大弁座を開閉する逆円錐台形の
副浮子とから成るてこ式複合空気弁であって、前記の穴
室は排水孔を有する底部で遮蔽し、前記主浮子の上部外
縁には遠心方向に膨出する数箇所の突起部を設け、前記
弁蓋の内壁には主浮子の上部外縁より内側にまで達し、
しかも前記支点と同じ高さの上限ストッパを複数個設
け、前記の弁筒の底に複数個の台座を設けたことを特徴
とする。DISCLOSURE OF THE INVENTION The present invention has a valve cylinder having an inflow port from a pipe line in the lower portion, a large valve seat attached to the upper portion of the valve cylinder, and a large valve seat in the center. A valve lid having a small valve seat below the valve seat and a fulcrum outside the small valve seat, and a valve lid that is vertically movably housed in the valve cylinder and swings around the fulcrum. An inverted frusto-conical main float that opens and closes the small valve seat, and an inverted frustoconical sub-float that opens and closes the large valve seat by being housed vertically in a hole chamber formed in the center of the main float. A lever-type compound air valve comprising: the hole chamber is shielded by a bottom portion having a drainage hole, and several protrusions bulging in a centrifugal direction are provided on an upper outer edge of the main float, and the valve lid is provided. The inner wall of the main float reaches to the inside from the upper outer edge,
Moreover, a plurality of upper limit stoppers having the same height as the fulcrum are provided, and a plurality of pedestals are provided on the bottom of the valve cylinder.
【０００７】従って、排気中に主浮子が台座の上に乗っ
ているときは、流入口から台座の周囲と主浮子の外側空
間と突起部の間を経て主浮子と副浮子の上方から大弁座
へ通じる排気通路が形成される。また、排気中に主浮子
が上限ストッパに当接しているときは、流入口から主浮
子の下方を通り、主浮子の外側空間を経て、突起部の間
を通り、複数の上限ストッパと支点の間を通過して、主
浮子と副浮子の上方から大弁座へ通じる排気通路が形成
される。即ち、主浮子の位置にかかわらずに大弁座に通
じる排気通路が確保され、しかも穴室は底部で遮蔽さ
れ、空気流はわずかに排水孔から流入するのみであるか
ら、副浮子は流入口からの空気流を直接受けることがな
い。Therefore, when the main float is on the pedestal during exhaust, the main valve and the sub-float are passed from the inlet to the periphery of the pedestal, the outer space of the main float, and the protrusions to the large valve. An exhaust passage leading to the seat is formed. Also, when the main float contacts the upper limit stopper during exhaust, it passes from the inflow port below the main float, through the outer space of the main float, and between the protrusions, and the upper limit stopper and fulcrum An exhaust passage is formed which passes through the space and communicates with the main float and the sub float from the upper side to the large valve seat. That is, regardless of the position of the main float, the exhaust passage leading to the large valve seat is secured, the hole chamber is shielded by the bottom part, and the air flow only slightly flows from the drain hole, so the sub-float is the inlet port. Do not receive the air flow from directly.
【０００８】[0008]
【実施例】図において、１は円筒状の弁筒で、２は弁筒
１の下方の流入口であり、３は弁筒１上方にねじ込み取
付けられる弁蓋で、４は弾性体で成る小弁座で、この小
弁座４は弁蓋３の偏心位置において下向きに突起し且つ
おねじを有する突座５に着座し、めねじ付の取付カバー
６が突座５にねじ込まれて小弁座４が固定される。７は
突座５に穿設されて小弁座４を大気側に通じる小弁口で
ある。８は上部外縁５１に遠心方向に膨出する数箇所の
突起部２５を有する逆円錐台形の主浮子である。１０は
主浮子８がてこ作用を伴って小弁座４を開閉するための
支点で弁蓋３の内壁から突設する。この支点１０の下面
は小弁座４の座面よりも僅かに高く、小弁座４よりも外
側に位置する。９は弁蓋３の内壁から中心方向に膨出し
て主浮子の上部外縁５１より小径のところまで達する複
数個の上限ストッパであり、主浮子８の上昇時の高さを
制限する。該上限ストッパ９の下面の高さは前記の支点
１０の下面の高さと同じである。従って主浮子８の上面
２７は支点１０と上限ストッパ９とによって上昇高さを
制限されて水平を保ちつつ小弁座４を押して閉塞する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the drawings, 1 is a cylindrical valve cylinder, 2 is an inflow port below the valve cylinder 1, 3 is a valve lid screwed and mounted above the valve cylinder 1, and 4 is a small elastic body. In the valve seat, the small valve seat 4 is seated on the protruding seat 5 which projects downward at the eccentric position of the valve lid 3 and has an external thread, and the mounting cover 6 with an internal thread is screwed into the protruding seat 5 to allow the small valve to be seated. The seat 4 is fixed. Reference numeral 7 is a small valve opening formed in the protruding seat 5 to communicate the small valve seat 4 to the atmosphere side. Reference numeral 8 is an inverted frustoconical main float having a plurality of protrusions 25 bulging in the centrifugal direction on the upper outer edge 51. Reference numeral 10 is a fulcrum for the main float 8 to open and close the small valve seat 4 with a lever action, which is projected from the inner wall of the valve lid 3. The lower surface of the fulcrum 10 is slightly higher than the seat surface of the small valve seat 4 and is located outside the small valve seat 4. Reference numeral 9 designates a plurality of upper limit stoppers that bulge in the central direction from the inner wall of the valve lid 3 and reach a position smaller than the upper outer edge 51 of the main float, and limit the height of the main float 8 when it rises. The height of the lower surface of the upper limit stopper 9 is the same as the height of the lower surface of the fulcrum 10. Therefore, the upper surface 27 of the main float 8 is restricted in its rising height by the fulcrum 10 and the upper limit stopper 9, and the small valve seat 4 is pushed and closed while keeping horizontal.
【０００９】また突起部２５の１つには割り溝３５が設
けてあり、支点１０から下向きに突出するピン３６がこ
の割り溝３５に挿入して、主浮子８の回転を防止する。
ただし割り溝３５とピン３６は省略してもかまわない。
主浮子８の中央には内壁に直線上突起２３を有する円筒
状の穴室１３が設けられ、この穴室１３は排水孔１５を
有する底部５０で遮蔽される。A split groove 35 is provided in one of the protrusions 25, and a pin 36 protruding downward from the fulcrum 10 is inserted into the split groove 35 to prevent the main float 8 from rotating.
However, the split groove 35 and the pin 36 may be omitted.
A cylindrical hole chamber 13 having a linear projection 23 on the inner wall is provided at the center of the main float 8, and the hole chamber 13 is shielded by a bottom portion 50 having a drain hole 15.
【００１０】前記弁蓋３の中央で前記小弁座４より上側
の位置には、弾性体で成る大弁座２０が大弁口２２を穿
設したねじ込み式の押え具２１で固定されている。前記
穴室１３内には該大弁座２０を開閉する副浮子１７が上
下動自在に収納されている。この副浮子１７は逆円錐台
形で、頂部には小さな円錐台形の突起１８が突出してい
る。この突起１８は副浮子１７が大弁座２０と同芯状態
で閉弁するための案内である。ただし突起１８は省略し
てもかまわない。また弁筒１の底には複数の台座１１が
形成されている。At a position above the small valve seat 4 in the center of the valve lid 3, a large valve seat 20 made of an elastic material is fixed by a screwing type presser 21 having a large valve opening 22. . A sub-float 17 for opening and closing the large valve seat 20 is housed in the hole chamber 13 so as to be vertically movable. The sub-float 17 has an inverted frustoconical shape, and a small frustoconical projection 18 projects from the top. The protrusion 18 is a guide for closing the sub-float 17 in a state of being coaxial with the large valve seat 20. However, the protrusion 18 may be omitted. A plurality of pedestals 11 are formed on the bottom of the valve cylinder 1.
【００１１】[0011]
【作用】この実施例の作用を説明する。弁筒１内が空気
で満たされていて、排気が行われしかも主浮子８が台座
１１に乗っている状態を図１に示す。このとき空気流
は、流入口２から台座の周囲１２と主浮子８の外側空間
３０とを経て、主浮子８と副浮子１７の上方から大弁座
２０を経由して、大弁口２２へ排気する。このとき副浮
子１７は主浮子８の穴室１３の中にあって、空気流は副
浮子１７を直接吹き上げることはない。排水孔１５から
流入する微量の空気流が副浮子１７を吹き上げようとす
るがその吹き上げ力は、流入口２からの空気流が副浮子
１７を直接吹き上げるときの吹き上げ力に比べると小さ
い。The operation of this embodiment will be described. FIG. 1 shows a state in which the valve cylinder 1 is filled with air, exhausted, and the main float 8 is on the pedestal 11. At this time, the air flow passes from the inflow port 2 through the pedestal periphery 12 and the outer space 30 of the main float 8 to the large valve port 22 from above the main float 8 and the sub-float 17 via the large valve seat 20. Exhaust. At this time, the sub-float 17 is in the hole chamber 13 of the main float 8, and the air flow does not directly blow up the sub-float 17. A small amount of air flow flowing from the drain hole 15 tries to blow up the sub-float 17, but the blowing force is smaller than the blowing force when the air flow from the inflow port 2 directly blows up the sub-float 17.
【００１２】次に弁筒１内が空気で満たされていてしか
も空気流のために主浮子８が上昇して上限ストッパ９に
当接している状態を図４に示す。このとき空気流は流入
口２から主浮子８の下方を通り、主浮子８の外側空間３
０を経て、突起部２５の間を通過し、さらに複数の上限
ストッパ９と支点１０の間を通過し、主浮子８と副浮子
１７の上方を通り、大弁座２０を経由して、大弁口２２
へ排気する。このとき、副浮子１７は主浮子８の穴室１
３の中にあって、空気流は副浮子１７を直接吹き上げる
ことはない。排水孔１５から流入する微量の空気流が副
浮子１７を吹き上げようとするが、その吹き上げ力は、
流入口２からの空気流が副浮子１７を直接吹き上げると
きの吹き上げ力に比べると小さい。FIG. 4 shows a state in which the inside of the valve cylinder 1 is filled with air and the main float 8 is raised due to the air flow and is in contact with the upper limit stopper 9. At this time, the air flow passes from the inflow port 2 to the lower side of the main float 8 and reaches the outer space 3 of the main float 8.
0, passes between the protrusions 25, further passes between the plurality of upper limit stoppers 9 and the fulcrum 10, passes above the main float 8 and the sub-float 17, and passes through the large valve seat 20 to reach the large Valve 22
Exhaust to. At this time, the sub-float 17 is the hole chamber 1 of the main float 8.
3, the air flow does not directly blow up the sub-float 17. A small amount of airflow flowing from the drain hole 15 tries to blow up the sub-float 17, but the blowing force is
The air flow from the inflow port 2 is smaller than the blowing force when directly blowing up the sub float 17.
【００１３】弁筒１内が充水すると、図２に示すよう
に、主浮子８は浮力により必ず上昇して支点１０と上限
ストッパ９に当接し、しかも小弁座４を押して閉塞しつ
つ上面２７を水平に保つ。また、副浮子１７も浮力によ
り上昇して大弁座２０を閉塞する。When the inside of the valve cylinder 1 is filled with water, as shown in FIG. 2, the main float 8 is always raised by the buoyancy to come into contact with the fulcrum 10 and the upper limit stopper 9, and further, the small valve seat 4 is pushed to close the upper surface. Keep 27 horizontal. The sub-float 17 also rises due to buoyancy and closes the large valve seat 20.
【００１４】次に充水後に流入口２から空気が入って弁
筒内に貯溜するときについて図２を用いて説明する。空
気貯溜とともに副浮子１７の浮力が小さくなるので、副
浮子１７が大弁座２０を押す力は軽減されるが、弁筒１
内の圧力により副浮子１７を大弁座２０に押し付ける力
が存するため、大弁座２０は開弁されない。主浮子８も
浮力軽減して降下しようとする。このとき弁筒１内の圧
力が上面２７を小弁座４に押しつけるが、支点１０を中
心としたてこ作用で小弁座４を開く力の方が強く、よっ
て主浮子８は支点１０を中心に揺動して小弁座４を開弁
する。Next, a case in which air enters from the inflow port 2 and is stored in the valve cylinder after being filled with water will be described with reference to FIG. Since the buoyancy of the sub-float 17 becomes smaller together with the air storage, the force of the sub-float 17 to push the large valve seat 20 is reduced.
Since there is a force to press the sub-float 17 against the large valve seat 20 due to the internal pressure, the large valve seat 20 is not opened. The main float 8 also tries to descend with reduced buoyancy. At this time, the pressure inside the valve cylinder 1 pushes the upper surface 27 against the small valve seat 4, but the force of opening the small valve seat 4 by the lever action about the fulcrum 10 is stronger, so that the main float 8 is centered on the fulcrum 10. And the small valve seat 4 is opened.
【００１５】弁筒１内が負圧となるときは、まず副浮子
１７が大弁座２０から離れ、次いで弁筒１内に空気が吸
入される。このとき穴室１３内の水は排水孔１５から流
入口２へ排出し、副浮子１７は穴室１３の底部５０に着
座する。弁筒１内が空になるに従い主浮子８も降下して
台座１１に着座する。When the inside of the valve cylinder 1 has a negative pressure, the sub-float 17 first separates from the large valve seat 20, and then the air is sucked into the valve cylinder 1. At this time, the water in the hole chamber 13 is discharged from the drain hole 15 to the inflow port 2, and the sub-float 17 is seated on the bottom portion 50 of the hole chamber 13. As the inside of the valve cylinder 1 becomes empty, the main float 8 also descends and sits on the pedestal 11.
【００１６】[0016]
【考案の効果】主浮子８が台座１１に乗っているときに
も上限ストッパ９に当接するときにも、流入口２から大
弁座２０に通じる排気通路が確保され、しかも副浮子１
７は主浮子８の穴室１３内にあって流入口２からの空気
流を直接受けることがない。EFFECT OF THE INVENTION Whether the main float 8 is on the pedestal 11 or abuts on the upper limit stopper 9, an exhaust passage leading from the inflow port 2 to the large valve seat 20 is ensured, and the sub-float 1 is also provided.
7 is in the hole chamber 13 of the main float 8 and does not directly receive the air flow from the inflow port 2.
【図１】この考案の実施例に係るてこ式複合空気弁の正
面から見た断面図であって、排気時の状態を表す。FIG. 1 is a sectional view of a lever type compound air valve according to an embodiment of the present invention as seen from the front, showing a state at the time of exhaust.
【図２】この考案の実施例に係るてこ式複合空気弁の正
面から見た断面図であって、充水時の状態及び充水後に
空気が貯溜する時の状態を示す。FIG. 2 is a cross-sectional view of the lever type compound air valve according to the embodiment of the present invention seen from the front, showing a state at the time of filling water and a state at the time when air is stored after the filling.
【図３】図１，２及び４において、４０，４１の面で切
断して下から見た断面図を示す。FIG. 3 shows a cross-sectional view taken from the bottom of FIG. 1, 2 and 4 along the plane 40, 41.
【図４】この考案の実施例に係るてこ式複合空気弁の正
面から見た断面図であって、排気時の状態を示す。FIG. 4 is a cross-sectional view of the lever type composite air valve according to the embodiment of the present invention seen from the front, showing a state at the time of exhaust.
１ 弁筒 ２ 流入口 ３ 弁蓋 ４ 小弁座 ８ 主浮子 ９ 上限ストッパ １０ 支点 １１ 台座 １３ 穴室 １５ 排水孔 １７ 副浮子 ２０ 大弁座 ２５ 突起部 ５０ 底部 ５１ 主浮子８の上部外縁 1 valve cylinder 2 inflow port 3 valve lid 4 small valve seat 8 main float 9 upper limit stopper 10 fulcrum 11 pedestal 13 hole chamber 15 drainage hole 17 auxiliary float 20 large valve seat 25 protrusion 50 bottom 51 upper outer edge of the main float 8
Claims (1)
と、この弁筒の上部に取付けられて、中央に大弁座を有
し、偏心位置で大弁座より下側に小弁座を有し、さらに
該小弁座より外側に支点を有する弁蓋と、前記の弁筒内
に上下動自在に収納されて前記の支点を中心に揺動して
前記小弁座を開閉する逆円錐台形の主浮子と、該主浮子
の中央に穿設される穴室に上下動自在に収納されて前記
大弁座を開閉する逆円錐台形の副浮子とから成るてこ式
複合空気弁であって、前記の穴室は排水孔を有する底部
で遮蔽し、前記主浮子の上部外縁には遠心方向に膨出す
る数箇所の突起部を設け、前記弁蓋の内壁には主浮子の
上部外縁より内側にまで達し、しかも前記支点と同じ高
さの上限ストッパを複数個設け、前記の弁筒の底に複数
個の台座を設けたことを特徴とするてこ式複合空気弁。1. A valve cylinder having an inflow port from a pipe line at a lower portion, a large valve seat attached to an upper portion of the valve cylinder, having a large valve seat in the center, and a small valve below the large valve seat at an eccentric position. A valve lid having a seat and having a fulcrum outside the small valve seat; and a valve lid that is vertically movably housed in the valve cylinder and swings around the fulcrum to open and close the small valve seat. A lever type compound air valve comprising an inverted frustoconical main float and an inverted frustoconical sub float which is vertically movably housed in a hole chamber formed in the center of the main float to open and close the large valve seat. There, the hole chamber is shielded by a bottom having a drainage hole, several protrusions that bulge in the centrifugal direction are provided on the outer edge of the upper part of the main float, and the inner wall of the valve lid has the upper part of the main float. A plurality of upper limit stoppers reaching the inside from the outer edge and having the same height as the fulcrum are provided, and a plurality of pedestals are provided at the bottom of the valve cylinder. Lever type compound air valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1991061811U JP2516580Y2 (en) | 1991-05-02 | 1991-05-02 | Lever type compound air valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1991061811U JP2516580Y2 (en) | 1991-05-02 | 1991-05-02 | Lever type compound air valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04126076U JPH04126076U (en) | 1992-11-17 |
| JP2516580Y2 true JP2516580Y2 (en) | 1996-11-06 |
Family
ID=31930103
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1991061811U Expired - Fee Related JP2516580Y2 (en) | 1991-05-02 | 1991-05-02 | Lever type compound air valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2516580Y2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3477472B2 (en) * | 2000-05-18 | 2003-12-10 | 敏雄 矢野 | Submerged air valve with repair function |
| JP4141675B2 (en) * | 2001-10-31 | 2008-08-27 | 株式会社清水鐵工所 | Eccentric air valve |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2082257B (en) * | 1980-08-08 | 1984-02-15 | Gen Electric | Liquid coolant distribution systems for gas turbines |
-
1991
- 1991-05-02 JP JP1991061811U patent/JP2516580Y2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04126076U (en) | 1992-11-17 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |