JP2002276893A - Float valve - Google Patents
Float valveInfo
- Publication number
- JP2002276893A JP2002276893A JP2001074771A JP2001074771A JP2002276893A JP 2002276893 A JP2002276893 A JP 2002276893A JP 2001074771 A JP2001074771 A JP 2001074771A JP 2001074771 A JP2001074771 A JP 2001074771A JP 2002276893 A JP2002276893 A JP 2002276893A
- Authority
- JP
- Japan
- Prior art keywords
- float
- valve
- seat
- valve chamber
- outlet
- 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.)
- Pending
Links
Landscapes
- Float Valves (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、気体と液体の比重
差を利用して開放または密閉のフロートの外表面で弁孔
を直接開閉し、気液混合系から一方の流体を自動的に排
出するフロート弁に関する。このフロート弁は蒸気配管
系に発生する復水を自動的に排出するスチームトラッ
プ、圧縮空気配管系に発生する凝縮水を自動的に排出す
るエアートラップ、ガス配管系に発生する凝縮水を自動
的に排出するガストラップ、油配管系に混在する水を自
動的に排出するオイルトラップ、水配管系に混在する空
気を自動的に排出するエアーベントとして利用される。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention uses a difference in specific gravity between gas and liquid to directly open and close a valve hole on the outer surface of an open or closed float, and automatically discharges one fluid from a gas-liquid mixing system. Float valve. This float valve automatically discharges condensate generated in the steam piping system, an air trap automatically discharges condensed water generated in the compressed air piping system, and automatically condensed water generated in the gas piping system It is used as a gas trap that discharges water to an oil pipe, an oil trap that automatically discharges water mixed in an oil piping system, and an air vent that automatically discharges air mixed in a water piping system.
【０００２】[0002]
【従来の技術】従来のフロート弁として実公昭６３−１
２３１８号公報に示されたものがある。ここに示された
ものは、入口と出口を有するケーシング内に弁室を形成
し、弁室と出口を連通する弁孔を有する弁座の弁室側端
を弁室に突出させて設け、弁孔の弁室側端に接する部分
を球面状に形成した開放または密閉のフロートを弁室内
に自由状態で配置してフロートの球面状の外表面で弁孔
を直接閉じるようにし、フロートよりも微少大きい半径
の部分円筒面状のフロート座を弁孔と同軸に形成し、フ
ロートがフロート座に接した位置で弁孔を完全に閉じる
ようにしたものである。2. Description of the Related Art As a conventional float valve, Japanese Utility Model Publication No. 63-1
No. 2318 is disclosed. What is shown here, a valve chamber is formed in a casing having an inlet and an outlet, and a valve chamber side end of a valve seat having a valve hole communicating the valve chamber and the outlet is provided so as to protrude into the valve chamber. An open or closed float in which the part in contact with the valve chamber side end of the hole is formed in a spherical shape is placed in the valve chamber in a free state, and the valve hole is directly closed on the spherical outer surface of the float, and is smaller than the float. A float seat having a large radius and a partial cylindrical surface is formed coaxially with the valve hole, and the valve hole is completely closed at a position where the float contacts the float seat.
【０００３】[0003]
【発明が解決しようとする課題】上記従来技術のもの
は、フロートよりも微少大きい半径の部分円筒面状のフ
ロート座を弁孔と同軸に形成したものであるので、フロ
ートが弁孔の軸方向に変位し易い。そのため、弁室内の
液面が動揺したり弁室内の流体の流動の影響を受ける
と、フロートが弁孔の軸方向に揺れて排出すべきでない
一方の流体を漏洩したり、また入口と出口の圧力が変動
して出入口の差圧が小さくなると、フロートが弁孔から
離れて出口から弁室への流体の逆流を生じる問題があっ
た。In the above-mentioned prior art, a float seat having a partial cylindrical surface having a radius slightly larger than that of the float is formed coaxially with the valve hole. Easily displaced. Therefore, when the liquid level in the valve chamber fluctuates or is affected by the flow of the fluid in the valve chamber, the float shakes in the axial direction of the valve hole to leak one of the fluids that should not be discharged, or the inlet and the outlet are not allowed to flow. When the pressure fluctuates and the differential pressure between the inlet and the outlet decreases, there is a problem that the float separates from the valve hole and the fluid flows backward from the outlet to the valve chamber.
【０００４】従って、本発明の技術的課題は、フロート
が弁孔を完全に閉じた位置でフロート座によって安定に
保持されるフロート弁を提供することである。Accordingly, it is an object of the present invention to provide a float valve in which the float is stably held by the float seat in a position where the valve hole is completely closed.
【０００５】[0005]
【課題を解決するための手段】上記の技術的課題を解決
するために講じた本発明の技術的手段は、入口と出口を
有するケーシング内に弁室を形成し、弁室と出口を連通
する弁孔を有する弁座の弁室側端を弁室に突出させて設
け、弁孔の弁室側端に接する部分を球面状に形成した開
放または密閉のフロートを弁室内に自由状態で配置して
フロートの球面状の外表面で弁孔を直接閉じるように
し、フロートと同じか微少大きい半径の部分球面状のフ
ロート座を弁孔の中心軸に対してフロートの球心を通る
概略直角方向の軸の周りに形成し、フロートがフロート
座に接した位置で弁孔を完全に閉じるようにしたたこと
を特徴とするフロート弁にある。Means for Solving the Problems In order to solve the above technical problems, the technical means of the present invention is to form a valve chamber in a casing having an inlet and an outlet, and to communicate the valve chamber with the outlet. An open or closed float in which a valve chamber end of a valve seat having a valve hole is provided so as to protrude into the valve chamber, and a portion in contact with the valve chamber side end of the valve hole is formed in a spherical shape, is freely disposed in the valve chamber. So that the valve hole is directly closed by the spherical outer surface of the float, and a partial spherical float seat having the same or a slightly larger radius as the float is inserted in a direction substantially perpendicular to the center axis of the valve hole and passing through the center of the float. A float valve formed around an axis, wherein a valve hole is completely closed at a position where the float is in contact with a float seat.
【０００６】[0006]
【発明の実施の形態】本発明は、フロートと同じか微少
大きい半径の部分球面状のフロート座を弁孔の中心軸に
対してフロートの球心を通る概略直角方向の軸の周りに
形成したものであるので、フロートが弁孔を完全に閉じ
た位置で弁孔の軸に対して横方向だけでなく弁孔の軸方
向にも揺れ難くなる。そのため、液面の動揺や流体の流
動の影響を受けたり出入口の差圧が小さくなっても、フ
ロートが弁孔を完全に閉じた位置でフロート座によって
安定に保持され、流体の漏洩や逆流を防止できる。DESCRIPTION OF THE PREFERRED EMBODIMENTS In the present invention, a partially spherical float seat having a radius equal to or slightly larger than that of a float is formed around an axis substantially perpendicular to the center axis of the valve hole and passing through the spherical center of the float. Therefore, when the float is in a position where the valve hole is completely closed, it is difficult for the float to swing not only laterally to the axis of the valve hole but also in the axial direction of the valve hole. Therefore, even when the float is affected by the fluctuation of the liquid surface, the flow of the fluid, or the differential pressure at the inlet / outlet becomes small, the float is stably held by the float seat at the position where the valve hole is completely closed, and leakage or backflow of the fluid is prevented. Can be prevented.
【０００７】[0007]
【実施例】上記の技術的手段の具体例を示す実施例を説
明する（図１参照）。本実施例はフリーフロート式スチ
ームトラップに適用したものである。本体１に蓋部材２
をボルトで締結してケーシングを形成する。ケーシング
の内部は仕切壁３で、入口４の連通する弁室５と出口６
の連通する出口通路７に隔てる。入口４は弁室５の上部
に開口し、スクリーン８及び通孔９を開けたフロートカ
バー１０を介して連通する。出口通路７の内周壁に出口
６に向けて開口する排出孔１１を有する管部材１２を取
り付ける。管部材１２は出口通路７が排出流体によって
浸食されることを防止するために耐浸食性を有するステ
ンレス鋼で作る。An embodiment showing a specific example of the above technical means will be described (see FIG. 1). This embodiment is applied to a free float steam trap. Lid member 2 on body 1
Are bolted together to form a casing. The interior of the casing is a partition wall 3, which communicates with the valve chamber 5 and the outlet 6 communicating with the inlet 4.
In the outlet passage 7 communicating with the vehicle. The inlet 4 opens at the upper part of the valve chamber 5 and communicates with the screen 8 through a float cover 10 having a through hole 9. A pipe member 12 having a discharge hole 11 opening toward the outlet 6 is attached to the inner peripheral wall of the outlet passage 7. The tube member 12 is made of erosion resistant stainless steel to prevent the outlet passage 7 from being eroded by the discharge fluid.
【０００８】弁室５内に中空球形のフロート１３を自由
状態で配置する。フロート１３は弁室５の液位に従って
浮上降下し、その外表面で下記の弁孔１４の弁室５側端
を開閉する。本体１の底壁にフロート座１５を形成す
る。フロート座１５は、弁孔１４の中心軸Ａに対してフ
ロート１３の球心を通る概略直角方向の軸Ｂの周りに、
フロート１３の半径と同じあるいはフロート１３の半径
よりも微少大きい半径の部分球面状に形成する。フロー
ト座１５は、紙面の手前側から向う側に渡って一条に形
成したり、紙面の手前側と向う側の二条に形成すること
ができる。フロート１３はフロート座１５に接した位置
で弁孔１４を完全に閉じる。[0008] A hollow spherical float 13 is arranged in the valve chamber 5 in a free state. The float 13 rises and falls according to the liquid level of the valve chamber 5, and opens and closes the following end of the valve hole 14 of the valve hole 14 on the outer surface thereof. A float seat 15 is formed on the bottom wall of the main body 1. The float seat 15 is arranged around an axis B in a direction substantially perpendicular to the center axis A of the valve hole 14 and passing through the center of the float 13.
It is formed in a partial spherical shape having a radius equal to or slightly larger than the radius of the float 13. The float seat 15 can be formed as a single piece from the near side of the drawing to the side facing the paper, or can be formed in two pieces on the side facing the near side of the drawing. The float 13 completely closes the valve hole 14 at a position in contact with the float seat 15.
【０００９】本体１の側壁開口から出口通路７及び仕切
壁３を貫通して先端が弁室５に突出する弁座１６を挿入
し、本体１にねじ結合する弁座保持部材１７で弁座１６
を保持する。弁座１６は軸方向の中心に貫通した弁孔１
４と通孔１８を有する。弁座１６と本体１の仕切壁３の
間に気密保持用のＯリング１９を設ける。弁座１６は外
面に一体に突出した凸部２０を有し、本体１は弁座１６
の凸部２０が嵌る凹部２１を有する。弁座１６の凸部２
０を本体１の凹部２１に嵌め合わせることにより、通孔
１８を出口通路７に向ける。A valve seat 16 is inserted from the side wall opening of the main body 1 through the outlet passage 7 and the partition wall 3 and has a tip projecting into the valve chamber 5. The valve seat 16 is screwed to the main body 1 by a valve seat holding member 17.
Hold. The valve seat 16 has a valve hole 1 penetrating through the center in the axial direction.
4 and a through hole 18. An O-ring 19 for maintaining airtightness is provided between the valve seat 16 and the partition wall 3 of the main body 1. The valve seat 16 has a projection 20 integrally protruding on the outer surface, and the main body 1 is provided with a valve seat 16.
Has a concave portion 21 in which the convex portion 20 is fitted. Convex part 2 of valve seat 16
The through hole 18 is directed toward the outlet passage 7 by fitting 0 into the concave portion 21 of the main body 1.
【００１０】蓋部材２に排気弁孔２２を開けた排気弁座
２３を間に保持ガイド２４を挟んでねじ結合する。保持
ガイド２４に係止するバネ２５で温度応動素子２６を保
持ガイド２４に係止する。温度応動素子２６はほぼ円板
状の密閉体カプセルで図示はしていないが内部に薄板ダ
イヤフラムと熱膨張収縮液を充填して形成する。排気弁
孔２２は蓋部材に形成した排気通路２７から管部材１２
の排出孔１１を通して出口６に連通する。An exhaust valve seat 23 having an exhaust valve hole 22 formed in the cover member 2 is screwed together with a holding guide 24 interposed therebetween. The temperature responsive element 26 is locked to the holding guide 24 by a spring 25 that locks to the holding guide 24. The temperature responsive element 26 is a substantially disk-shaped closed body capsule, not shown, and is formed by filling a thin plate diaphragm and a thermal expansion / contraction liquid inside. The exhaust valve hole 22 extends from the exhaust passage 27 formed in the lid member to the pipe member 12.
The outlet 6 communicates with the outlet 6 through the discharge hole 11.
【００１１】上記フリーフロート式スチームトラップの
作動は次の通りである。蒸気と復水及び空気が入口４か
ら弁室５に流入し、蒸気と空気が上部に復水が下部に分
離して溜まる。弁室５内の温度が高い場合、温度応動素
子２６は膨張して排気弁孔２２を閉じる。弁室５内の温
度が低くなると、温度応動素子２６は収縮して排気弁孔
２２を開き、弁室５内の復水や空気を排気弁孔２２から
出口６へ排出する。弁室５内の液位が上昇すると、フロ
ート１３は浮上して弁孔１４を開き、弁室５内の復水を
主弁口１８から出口６へ排出する。復水の排出によって
弁室５内の液位が低下すると、フロート１３は降下して
外表面で弁孔１４を直接閉じる。The operation of the above-mentioned free float steam trap is as follows. Steam, condensate and air flow into the valve chamber 5 from the inlet 4, and the steam and air separate and accumulate in the upper part, and the condensate separates in the lower part. When the temperature in the valve chamber 5 is high, the temperature responsive element 26 expands and closes the exhaust valve hole 22. When the temperature in the valve chamber 5 decreases, the temperature responsive element 26 contracts and opens the exhaust valve hole 22, and discharges condensate and air in the valve chamber 5 from the exhaust valve hole 22 to the outlet 6. When the liquid level in the valve chamber 5 rises, the float 13 floats and opens the valve hole 14, and the condensate in the valve chamber 5 is discharged from the main valve port 18 to the outlet 6. When the liquid level in the valve chamber 5 drops due to the discharge of the condensate, the float 13 descends and directly closes the valve hole 14 on the outer surface.
【００１２】フロート１３は弁孔１４を完全に閉じた位
置で、フロート１３と同じか微少大きい半径の部分球面
状で弁孔１４の中心軸Ａに対してフロート１３の球心を
通る概略直角方向の軸Ｂの周りに形成されたフロート１
３に接するので、弁孔１４の軸に対して横方向だけでな
く弁孔１４の軸方向にも揺れ難くなる。The float 13 is in a position where the valve hole 14 is completely closed, and has a partial spherical shape having the same or slightly larger radius as that of the float 13 in a direction substantially perpendicular to the center axis A of the valve hole 14 and passing through the spherical center of the float 13. Float 1 formed around axis B of
3 makes it difficult for the valve hole 14 to swing not only in the lateral direction but also in the axial direction of the valve hole 14.
【００１３】[0013]
【発明の効果】上記のように本発明は、フロートが弁孔
を完全に閉じた位置で弁孔の軸に対して横方向だけでな
く弁孔の軸方向にも揺れ難くなるので、液面の動揺や流
体の流動の影響を受けたり出入口の差圧が小さくなって
も、フロートが弁孔を完全に閉じた位置でフロート座に
よって安定に保持される。そのため、流体の漏洩や逆流
を防止できるという優れた効果を生じる。As described above, according to the present invention, when the float is in a position where the valve hole is completely closed, it is difficult for the float to swing not only in the lateral direction but also in the axial direction of the valve hole. The float is stably held by the float seat at a position where the valve hole is completely closed even if the float is affected by the fluctuation of the fluid, the flow of the fluid, or the pressure difference between the inlet and the outlet is reduced. Therefore, an excellent effect that leakage and backflow of the fluid can be prevented is produced.
【図１】本発明の実施例のフリーフロート式スチームト
ラップの断面図。FIG. 1 is a sectional view of a free-float type steam trap according to an embodiment of the present invention.
１ 本体 ２ 蓋部材 ４ 入口 ５ 弁室 ６ 出口 ７ 出口通路 １３ フロート １４ 弁孔 １５ フロート座 １６ 弁座 ２２ 排気弁口 ２３ 排気弁座 ２６ 温度応動素子 DESCRIPTION OF SYMBOLS 1 Main body 2 Lid member 4 Inlet 5 Valve room 6 Outlet 7 Outlet passage 13 Float 14 Valve hole 15 Float seat 16 Valve seat 22 Exhaust valve port 23 Exhaust valve seat 26 Temperature responsive element
Claims (1)
を形成し、弁室と出口を連通する弁孔を有する弁座の弁
室側端を弁室に突出させて設け、弁孔の弁室側端に接す
る部分を球面状に形成した開放または密閉のフロートを
弁室内に自由状態で配置してフロートの球面状の外表面
で弁孔を直接閉じるようにし、フロートと同じか微少大
きい半径の部分球面状のフロート座を弁孔の中心軸に対
してフロートの球心を通る概略直角方向の軸の周りに形
成し、フロートがフロート座に接した位置で弁孔を完全
に閉じるようにしたたことを特徴とするフロート弁。A valve chamber is formed in a casing having an inlet and an outlet, and a valve chamber side end of a valve seat having a valve hole communicating the valve chamber and the outlet is provided so as to protrude into the valve chamber. An open or closed float whose part in contact with the chamber side is formed in a spherical shape is placed in the valve chamber in a free state so that the valve hole is directly closed on the spherical outer surface of the float, and the radius is the same as or slightly larger than the float A partially spherical float seat is formed around an axis that is approximately perpendicular to the central axis of the valve hole and passes through the center of the float, and the valve hole is completely closed at the position where the float contacts the float seat. A float valve characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001074771A JP2002276893A (en) | 2001-03-15 | 2001-03-15 | Float valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001074771A JP2002276893A (en) | 2001-03-15 | 2001-03-15 | Float valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2002276893A true JP2002276893A (en) | 2002-09-25 |
Family
ID=18931972
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001074771A Pending JP2002276893A (en) | 2001-03-15 | 2001-03-15 | Float valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2002276893A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007333094A (en) * | 2006-06-15 | 2007-12-27 | Tlv Co Ltd | Float-type steam trap |
| JP2008045615A (en) * | 2006-08-11 | 2008-02-28 | Tlv Co Ltd | Float type steam trap |
| JP2008286241A (en) * | 2007-05-15 | 2008-11-27 | Tlv Co Ltd | Float type steam trap |
| JP2013087891A (en) * | 2011-10-19 | 2013-05-13 | Tlv Co Ltd | Steam trap |
| JPWO2016199628A1 (en) * | 2015-06-09 | 2017-12-28 | 株式会社テイエルブイ | Valve seat and drain trap |
| JP6333491B1 (en) * | 2017-01-16 | 2018-05-30 | 株式会社テイエルブイ | Valve device |
| WO2018131244A1 (en) * | 2017-01-16 | 2018-07-19 | 株式会社テイエルブイ | Valve device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6288899A (en) * | 1985-10-01 | 1987-04-23 | フエスト コマンデイト ゲゼルシヤフト | Condensing trap device |
| JPH06241396A (en) * | 1993-02-15 | 1994-08-30 | Tlv Co Ltd | Float type steam trap |
-
2001
- 2001-03-15 JP JP2001074771A patent/JP2002276893A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6288899A (en) * | 1985-10-01 | 1987-04-23 | フエスト コマンデイト ゲゼルシヤフト | Condensing trap device |
| JPH06241396A (en) * | 1993-02-15 | 1994-08-30 | Tlv Co Ltd | Float type steam trap |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007333094A (en) * | 2006-06-15 | 2007-12-27 | Tlv Co Ltd | Float-type steam trap |
| JP2008045615A (en) * | 2006-08-11 | 2008-02-28 | Tlv Co Ltd | Float type steam trap |
| JP2008286241A (en) * | 2007-05-15 | 2008-11-27 | Tlv Co Ltd | Float type steam trap |
| JP2013087891A (en) * | 2011-10-19 | 2013-05-13 | Tlv Co Ltd | Steam trap |
| JPWO2016199628A1 (en) * | 2015-06-09 | 2017-12-28 | 株式会社テイエルブイ | Valve seat and drain trap |
| JP6333491B1 (en) * | 2017-01-16 | 2018-05-30 | 株式会社テイエルブイ | Valve device |
| WO2018131244A1 (en) * | 2017-01-16 | 2018-07-19 | 株式会社テイエルブイ | Valve device |
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