JP6086802B2 - Lever float drain trap - Google Patents

Lever float drain trap Download PDF

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JP6086802B2
JP6086802B2 JP2013094714A JP2013094714A JP6086802B2 JP 6086802 B2 JP6086802 B2 JP 6086802B2 JP 2013094714 A JP2013094714 A JP 2013094714A JP 2013094714 A JP2013094714 A JP 2013094714A JP 6086802 B2 JP6086802 B2 JP 6086802B2
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shaft
lever
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valve body
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哲夫 浅田
哲夫 浅田
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Tlv Co Ltd
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Description

本発明は、蒸気配管系や圧縮空気配管系やガス配管系に発生するドレンをフロートを用いて自動的に排出するレバーフロート式ドレントラップに関する。 The present invention relates to a lever float drain trap that automatically discharges drain generated in a steam piping system, compressed air piping system, and gas piping system using a float.

従来のレバーフロート式ドレントラップは、例えば特許文献１に開示されている。これは、ケーシングで入口と出口を形成するとともに、前記入口と前記出口の間に弁室を形成し、前記弁室と前記出口とを連通する弁口を前記弁室の下部に形成し、前記弁室内に支持された揺動軸を中心として回動するレバーを設け、前記レバーの一端部側に弁室内の液位に応じて浮上降下するフロートを連結し、前記レバーの他端部側に支持されるとともに、前記揺動軸と平行な連結軸を設け、前記連結軸を介して前記レバーに連結されるとともに、前記弁口を開閉する弁体を設け、前記連結軸が前記揺動軸と前記フロートの重心を結ぶ直線上にあるものである。 A conventional lever float type drain trap is disclosed in Patent Document 1, for example. This forms an inlet and an outlet in the casing, forms a valve chamber between the inlet and the outlet, forms a valve port communicating with the valve chamber and the outlet at a lower portion of the valve chamber, A lever that pivots about a swing shaft supported in the valve chamber is provided, and a float that rises and falls according to the liquid level in the valve chamber is connected to one end of the lever, and the other end of the lever is connected to the other end. A connecting shaft that is supported and parallel to the swing shaft is provided, connected to the lever via the connection shaft, and a valve body that opens and closes the valve port is provided, the connecting shaft being the swing shaft And on the straight line connecting the center of gravity of the float.

特開２０１０−２４２９２３号公報JP 2010-242923 A

上記従来のレバーフロート式ドレントラップにおいては、ドレンの流入によってフロートが上昇するときにレバーの単位辺りの回動角度に対する弁体の開弁リフトの増加率が、弁体が開き始めるときに大きいため、急激なドレンの排出によって出口側でウォータハンマを生じることがあった。 In the above-described conventional lever float drain trap, when the float rises due to the inflow of drain, the rate of increase of the valve opening lift with respect to the rotation angle around the unit of the lever is large when the valve starts to open. In some cases, water hammer is generated on the outlet side due to sudden drainage.

したがって本発明が解決しようとする課題は、ドレンの流入によってフロートが上昇するときにレバーの単位辺りの回動角度に対する弁体の開弁リフトの増加率を弁体が開き始めるときに小さくできるレバーフロート式ドレントラップを提供することである。 Therefore, the problem to be solved by the present invention is a lever that can reduce the rate of increase of the valve opening lift relative to the rotation angle of the lever per unit when the float rises due to the inflow of drain when the valve body starts to open. It is to provide a float drain trap.

上記の課題を解決するために、本発明のレバーフロート式ドレントラップは、
ケーシングで入口と出口を形成するとともに、前記入口と前記出口の間に弁室を形成し、
前記弁室と前記出口とを連通する弁口を前記弁室の下部に形成し、
前記弁室内に支持された揺動軸を中心として回動するレバーを設け、
前記レバーの一端部側に弁室内の液位に応じて浮上降下するフロートを連結し、
前記レバーの他端部側に支持されるとともに、前記揺動軸と平行な連結軸を設け、
前記連結軸を介して前記レバーに連結されるとともに、前記弁口を開閉する弁体を設け、
前記弁体が前記弁口を閉止した時に前記連結軸が前記揺動軸を中心とする円であって前記揺動軸と前記連結軸との距離を半径とする円の最下点にある。 In order to solve the above problems, the lever float drain trap of the present invention is
Forming an inlet and an outlet in the casing, and forming a valve chamber between the inlet and the outlet;
Forming a valve port communicating the valve chamber and the outlet at a lower portion of the valve chamber;
A lever that rotates about a swing shaft supported in the valve chamber;
A float that rises and falls according to the liquid level in the valve chamber is connected to one end side of the lever,
Provided with a connecting shaft that is supported on the other end side of the lever and parallel to the swing shaft,
The valve body is connected to the lever via the connection shaft and opens and closes the valve port,
When the valve body closes the valve port, the connecting shaft is a circle centered on the swing shaft and is at the lowest point of a circle whose radius is the distance between the swing shaft and the connection shaft.

本発明によれば、弁体が弁口を閉止した時に連結軸が揺動軸を中心とする円であって揺動軸と連結軸との距離を半径とする円の最下点にあるので、ドレンの流入によってフロートが上昇するときにレバーの単位辺りの回動角度に対する弁体の開弁リフトの増加率を弁体が開き始めるときに小さくでき、ドレンの排出によって出口側でウォータハンマを生じ難くすることができるという優れた効果を生じる。 According to the present invention, when the valve body closes the valve port, the connecting shaft is a circle centered on the swinging shaft and is at the lowest point of the circle whose radius is the distance between the swinging shaft and the connecting shaft. When the float rises due to the inflow of drain, the rate of increase of the valve opening lift relative to the rotation angle around the lever unit can be reduced when the valve body begins to open. This produces an excellent effect that it can be made difficult to occur.

本発明の実施の形態に係わるレバーフロート式ドレントラップの断面図である。It is sectional drawing of the lever float type drain trap concerning embodiment of this invention.

以下、本発明の実施の形態について、図１を参照して説明する。本発明のレバーフロート式ドレントラップは、入口１と出口２を有する本体３に蓋体４をボルト５で締結して内部に弁室６を有するケーシングを構成する。弁室６と出口２を連通する第１弁口７及び第２弁口８を上下同一軸上に有する弁座部材９を弁室６の下部の本体３に図示しないねじにより取り付ける。入口１は弁室６の下部に開口し、出口２は第１弁口７及び第２弁口８を介して弁室６の下部に開口する。第１弁口７及び第２弁口８はそれぞれ鉛直方向に開口する。 Hereinafter, an embodiment of the present invention will be described with reference to FIG. The lever float type drain trap of the present invention constitutes a casing having a valve chamber 6 inside by fastening a lid 4 to a main body 3 having an inlet 1 and an outlet 2 with a bolt 5. A valve seat member 9 having a first valve port 7 and a second valve port 8 communicating with the valve chamber 6 and the outlet 2 on the same vertical axis is attached to a main body 3 below the valve chamber 6 with screws (not shown). The inlet 1 opens to the lower part of the valve chamber 6, and the outlet 2 opens to the lower part of the valve chamber 6 through the first valve port 7 and the second valve port 8. The first valve port 7 and the second valve port 8 each open in the vertical direction.

本体３の弁室６内に揺動軸１０を支持し、揺動軸１０にレバー１１の右端部側を回動可能に連結する。レバー１１の左端部側に弁室６内の液位に応じて浮上降下する中空球形のフロート１２を連結する。レバー１１の右端部側の揺動軸１０の下方に揺動軸１０と平行な連結軸１３を支持し、連結軸１３に連結部材１４の上部を回動可能に連結する。連結部材１４は手前側と向う側の平行に対向した２枚の板から構成する。連結部材１４の下部は弁体１５の弁棒１６の上端部に支持された揺動軸１０と平行な弁軸１７に回動可能に連結する。弁体１５は第１弁口７を上方の弁室６側から開閉する第１弁体１８と、第２弁口８を上方の出口２側から開閉する第２弁体１９と、第１弁体１８と第２弁体１９を連結する弁棒１６とから構成する。弁体１５が第１弁口７及び第２弁口８を閉止した時に、連結軸１３は揺動軸１０の真下、すなわち、連結軸１３は揺動軸１０を中心とする円であって揺動軸１０と連結軸１３との距離を半径とする円の最下点にある。また、弁体１５が第１弁口７及び第２弁口８を閉止した時に、弁軸１７は連結軸１３の真下、すなわち、弁軸１７は揺動軸１０と連結軸１３とを結ぶ直線の延長線上にある。そして、弁体１５が第１弁口７及び第２弁口８を全開した時に、連結軸１３は揺動軸１０の概略４５度左下方にあり、弁軸１７は連結軸１３の真下にある。これとは別に、弁体１５が第１弁口７及び第２弁口８を閉止した時に、連結軸１３は揺動軸１０の真下にあり、弁軸１７は連結軸１３の斜め下方にあるようにしても良い。また、これらとは別に、連結部材１４と弁体１５とを一体に形成しても良い。 A swing shaft 10 is supported in the valve chamber 6 of the main body 3, and the right end side of the lever 11 is rotatably connected to the swing shaft 10. A hollow spherical float 12 that rises and falls according to the liquid level in the valve chamber 6 is connected to the left end side of the lever 11. A connecting shaft 13 parallel to the oscillating shaft 10 is supported below the oscillating shaft 10 on the right end side of the lever 11, and the upper portion of the connecting member 14 is rotatably connected to the connecting shaft 13. The connecting member 14 is composed of two plates facing each other in parallel on the side facing the front side. The lower part of the connecting member 14 is rotatably connected to a valve shaft 17 parallel to the swing shaft 10 supported on the upper end of the valve rod 16 of the valve body 15. The valve body 15 includes a first valve body 18 that opens and closes the first valve port 7 from the upper valve chamber 6 side, a second valve body 19 that opens and closes the second valve port 8 from the upper outlet 2 side, and a first valve It comprises a valve rod 16 connecting the body 18 and the second valve body 19. When the valve body 15 closes the first valve port 7 and the second valve port 8, the connecting shaft 13 is directly below the swinging shaft 10, that is, the connecting shaft 13 is a circle centered on the swinging shaft 10 and swings. It is at the lowest point of a circle whose radius is the distance between the moving shaft 10 and the connecting shaft 13. Further, when the valve body 15 closes the first valve port 7 and the second valve port 8, the valve shaft 17 is directly below the connecting shaft 13, that is, the valve shaft 17 is a straight line connecting the swing shaft 10 and the connecting shaft 13. It is on the extension line. When the valve body 15 fully opens the first valve port 7 and the second valve port 8, the connecting shaft 13 is approximately 45 degrees to the lower left of the swing shaft 10, and the valve shaft 17 is directly below the connecting shaft 13. . Apart from this, when the valve body 15 closes the first valve port 7 and the second valve port 8, the connecting shaft 13 is directly below the swing shaft 10, and the valve shaft 17 is obliquely below the connecting shaft 13. You may do it. Apart from these, the connecting member 14 and the valve body 15 may be integrally formed.

弁室６内の液位が低い場合は、図１に示すようにフロート１２は降下し、第１弁体１８及び第２弁体１９が第１弁口７及び第２弁口８を閉止している。このとき、連結軸１３は揺動軸１０の真下、すなわち、連結軸１３は揺動軸１０を中心とする半径の最下点にあり、弁軸１７は連結軸１３の真下、すなわち、弁軸１７は揺動軸１０と連結軸１３とを結ぶ直線の延長線上にある。入口１から流入するドレンによって弁室６内の液位が上昇すると、フロート１２が上動してレバー１１が揺動軸１０を中心に時計回り方向に回動する。このレバー１１の回動により、連結部材１４を介して弁体１５が上動して第１弁体１８及び第２弁体１９が第１弁口７及び第２弁口８を開く。これにより、弁室６のドレンを出口２から排出する。そして、弁体１５が第１弁口７及び第２弁口８を全開した時に、連結軸１３は揺動軸１０の概略４５度左下方にあり、弁軸１７は連結軸１３の真下にある。この弁体１５が第１弁口７及び第２弁口８を閉止した状態から全開した状態まで移行する過程で、レバー１１の単位辺りの回動角度に対する弁体１５の開弁リフトの増加率は弁体１５が第１弁口７及び第２弁口８を開き始めるときに小さくなり、弁体１５による第１弁口７及び第２弁口８の開度が大きくなるにしたがって大きくなる。 When the liquid level in the valve chamber 6 is low, the float 12 descends as shown in FIG. 1, and the first valve body 18 and the second valve body 19 close the first valve port 7 and the second valve port 8. ing. At this time, the connecting shaft 13 is directly below the swing shaft 10, that is, the connecting shaft 13 is at the lowest point of the radius around the swing shaft 10, and the valve shaft 17 is directly below the connecting shaft 13, that is, the valve shaft. Reference numeral 17 denotes a linear extension line connecting the swing shaft 10 and the connecting shaft 13. When the liquid level in the valve chamber 6 rises due to the drain flowing from the inlet 1, the float 12 moves up, and the lever 11 rotates clockwise about the swing shaft 10. By rotation of the lever 11, the valve body 15 is moved upward via the connecting member 14, and the first valve body 18 and the second valve body 19 open the first valve port 7 and the second valve port 8. Thereby, the drain of the valve chamber 6 is discharged from the outlet 2. When the valve body 15 fully opens the first valve port 7 and the second valve port 8, the connecting shaft 13 is approximately 45 degrees to the lower left of the swing shaft 10, and the valve shaft 17 is directly below the connecting shaft 13. . The rate of increase of the valve lift of the valve body 15 with respect to the rotation angle of the lever 11 per unit during the process of the valve body 15 from the closed state of the first valve port 7 and the second valve port 8 to the fully opened state. Becomes smaller when the valve body 15 starts to open the first valve port 7 and the second valve port 8, and increases as the opening degree of the first valve port 7 and the second valve port 8 by the valve body 15 increases.

ドレンの排出により弁室６内の液位が低下すると、フロート１２が下動してレバー１１が揺動軸１０を中心に反時計回り方向に回動する。このレバー１１の回動により、連結部材１４を介して弁体１５が下動して第１弁体１８及び第２弁体１９が第１弁口７及び第２弁口８を閉止する。これにより、気体の漏出を防止する。 When the liquid level in the valve chamber 6 decreases due to the drainage, the float 12 moves downward and the lever 11 rotates counterclockwise about the swing shaft 10. By the rotation of the lever 11, the valve body 15 moves downward via the connecting member 14, and the first valve body 18 and the second valve body 19 close the first valve port 7 and the second valve port 8. This prevents gas leakage.

本発明は、蒸気配管系や圧縮空気配管系やガス配管系に発生するドレンをフロートを用いて自動的に排出するレバーフロート式ドレントラップに利用することができる。   INDUSTRIAL APPLICABILITY The present invention can be used for a lever float drain trap that automatically discharges drain generated in a steam piping system, compressed air piping system, or gas piping system using a float.

１ 入口
２ 出口
３ 本体
４ 蓋体
６ 弁室
７ 第１弁口
８ 第２弁口
９ 弁座部材
１０ 揺動軸
１１ レバー
１２ フロート
１３ 連結軸
１４ 連結部材
１５ 弁体
１６ 弁棒
１７ 弁軸
１８ 第１弁体
１９ 第２弁体 1 Inlet 2 Outlet 3 Main Body 4 Lid 6 Valve Chamber 7 First Valve Port 8 Second Valve Port 9 Valve Seat Member 10 Oscillating Shaft 11 Lever 12 Float 13 Connecting Shaft 14 Connecting Member 15 Valve Body 16 Valve Rod 17 Valve Shaft 18 First valve body 19 Second valve body

Claims (3)

ケーシングで入口と出口を形成するとともに、前記入口と前記出口の間に弁室を形成し、
前記弁室と前記出口とを連通する弁口を前記弁室の下部に形成し、
前記弁室内に支持された揺動軸を中心として回動するレバーを設け、
前記レバーの一端部側に弁室内の液位に応じて浮上降下するフロートを連結し、
前記レバーの他端部側に支持されるとともに、前記揺動軸と平行な連結軸を設け、
前記連結軸を介して前記レバーに連結されるとともに、前記弁口を開閉する弁体を設け、
前記弁体が前記弁口を閉止した時に前記連結軸が前記揺動軸を中心とする円であって前記揺動軸と前記連結軸との距離を半径とする円の最下点にある
レバーフロート式ドレントラップ。 Forming an inlet and an outlet in the casing, and forming a valve chamber between the inlet and the outlet;
Forming a valve port communicating the valve chamber and the outlet at a lower portion of the valve chamber;
A lever that rotates about a swing shaft supported in the valve chamber;
A float that rises and falls according to the liquid level in the valve chamber is connected to one end side of the lever,
Provided with a connecting shaft that is supported on the other end side of the lever and parallel to the swing shaft,
The valve body is connected to the lever via the connection shaft and opens and closes the valve port,
When the valve body closes the valve port, the connecting shaft is a circle centered on the swinging shaft, and the lever is at the lowest point of the circle whose radius is the distance between the swinging shaft and the connecting shaft. Float type drain trap. 前記連結軸を中心として回動する連結部材を設け、
前記連結部材に支持されるとともに、前記揺動軸と平行な弁軸を設け、
前記弁体が前記弁軸を中心として回動する
請求項１に記載のレバーフロート式ドレントラップ。 Providing a connecting member that rotates about the connecting shaft;
A valve shaft supported by the connecting member and parallel to the swing shaft is provided.
The lever float drain trap according to claim 1, wherein the valve body rotates around the valve shaft. 前記弁体が前記弁口を閉止した時に前記弁軸が前記揺動軸と前記連結軸とを結ぶ直線の延長線上にある
請求項２に記載のレバーフロート式ドレントラップ。 3. The lever float drain trap according to claim 2, wherein the valve shaft is on a straight extension line connecting the swing shaft and the connecting shaft when the valve body closes the valve port.
JP2013094714A 2013-04-26 2013-04-26 Lever float drain trap Active JP6086802B2 (en)

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Publication number Priority date Publication date Assignee Title
CN112253983A (en) * 2020-10-30 2021-01-22 上海沪东造船阀门有限公司 Marine lever floating ball type drain valve

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US9982602B2 (en) 2015-04-15 2018-05-29 Hamilton Sundstrand Corporation Shut off valves and components thereof for ecology fuel return systems
CN110963058A (en) * 2019-12-23 2020-04-07 中国航空工业集团公司沈阳飞机设计研究所 Float valve for aircraft ventilation and pressurization system

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JPS59121598U (en) * 1983-02-03 1984-08-16 株式会社ヨシタケ製作所 Float steam trap
JPS63166411A (en) * 1986-12-26 1988-07-09 Yoshitake Seisakusho:Kk Separator equipped with strainer and trap
JP5366623B2 (en) * 2009-04-09 2013-12-11 株式会社ミヤワキ Double seat balance valve

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112253983A (en) * 2020-10-30 2021-01-22 上海沪东造船阀门有限公司 Marine lever floating ball type drain valve
CN112253983B (en) * 2020-10-30 2022-03-15 上海沪东造船阀门有限公司 Marine lever floating ball type drain valve

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