JP5179397B2 - Lever float drain trap - Google Patents

Lever float drain trap Download PDF

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JP5179397B2
JP5179397B2 JP2009031714A JP2009031714A JP5179397B2 JP 5179397 B2 JP5179397 B2 JP 5179397B2 JP 2009031714 A JP2009031714 A JP 2009031714A JP 2009031714 A JP2009031714 A JP 2009031714A JP 5179397 B2 JP5179397 B2 JP 5179397B2
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valve
lever
valve seat
valve chamber
opens
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JP2010185555A (en
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昌久 広谷
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Tlv Co Ltd
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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、ケーシングで入口と弁室と出口を形成し、弁室と出口を連通する弁口を開けた弁座を弁室の下部に形成し、弁室内に支持された揺動軸の周りに回転するレバーを設け、弁室内の液位に応じて浮上降下するフロートをレバーに連結すると共に弁座に離着座して弁口を開閉する弁体をレバーに連結したものにおいて、一軸上に設けられた一対の第１及び第２弁座により弁座を形成し、第１及び第２弁座の軸上を移動して第１及び第２弁座を同時に開閉する一対の第１及び第２弁体により弁体を形成し、弁体に作用する流体圧力を対称に作用させて互いに相殺して大きな弁口を開閉できるようにしたものである。   A conventional lever float drain trap is formed in a casing, which forms an inlet, a valve chamber, and an outlet. A valve seat that opens a valve port that communicates the valve chamber and the outlet is formed in the lower portion of the valve chamber, and is supported in the valve chamber. A lever that rotates around the swing shaft is connected to a float that rises and falls according to the liquid level in the valve chamber, and a valve element that opens and closes the valve seat and opens and closes the valve port is connected to the lever. The first and second valve seats provided on one axis form a valve seat, and the first and second valve seats are simultaneously opened and closed by moving on the first and second valve seat axes. A valve body is formed by the first and second valve bodies, and the fluid pressure acting on the valve body is made to act symmetrically to cancel each other so that a large valve port can be opened and closed.

特開２００８−２８６２３８号公報JP 2008-286238 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、第１及び第２弁体が第１及び第２弁座に同時に着座できるように製作することが困難で、気体を漏出し易いという問題点があった。   The conventional lever float type drain trap has a problem that it is difficult to manufacture the first and second valve bodies so that they can be seated on the first and second valve seats at the same time, and gas is likely to leak. .

したがって本発明が解決しようとする課題は、気体を漏出することなく弁体に作用する流体圧力を相殺して大きな弁口を開閉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 to provide a lever float type drain trap capable of opening and closing a large valve port by offsetting the fluid pressure acting on the valve body without leaking gas.

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弁室と出口を形成し、弁室と出口を連通する弁口を開けた弁座を弁室の下部に形成し、弁室内に支持された揺動軸の周りに回転するレバーを設け、弁室内の液位に応じて浮上降下するフロートをレバーに連結すると共に弁座に離着座して弁口を開閉する弁体をレバーに連結したものにおいて、弁座は円筒形状で両端を弁室に開口すると共に周囲を排出孔により出口に連通し、弁体は円筒形状で一端を開口すると共に他端を壁部材により塞いで一端開口側の環状弁面が弁座の一端開口側の弁口を開閉すると共に他端壁部材側の外周が弁座の他端開口側の内周を気密的に摺動することを特徴とするものである。   In order to solve the above-mentioned problems, the lever float type drain trap of the present invention has an inlet, a valve chamber, and an outlet formed in a casing, and a valve seat that opens a valve port that communicates the valve chamber and the outlet. And a lever that rotates around 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 the lever and seated on the valve seat to open the valve port. In the valve body that opens and closes connected to the lever, the valve seat has a cylindrical shape and both ends open to the valve chamber, and the periphery communicates with the outlet through the discharge hole. The annular valve face on one end opening side opens and closes the valve opening on one end opening side of the valve seat, and the outer periphery on the other end wall member side airtightly slides on the inner periphery on the other end opening side of the valve seat. It is characterized by doing.

本発明によれば、弁座は円筒形状で両端を弁室に開口すると共に周囲を排出孔により出口に連通し、弁体は円筒形状で一端を開口すると共に他端を壁部材により塞いで一端開口側の環状弁面が弁座の一端開口側の弁口を開閉すると共に他端壁部材側の外周が弁座の他端開口側の内周を気密的に摺動するものであるので、弁体の一端乃至壁部材の一面と壁部材の他面に作用する流体圧力を対称に作用させて互いに相殺して弁体の環状弁面で弁座の大きな弁口を気体を漏出することなく開閉することができるという効果を奏する。   According to the present invention, the valve seat has a cylindrical shape and both ends open to the valve chamber and the periphery communicates with the outlet through the discharge hole. The valve body has a cylindrical shape and has one end opened and the other end closed by the wall member. Since the annular valve surface on the opening side opens and closes the valve port on the one end opening side of the valve seat and the outer periphery on the other end wall member side slides in an airtight manner on the inner periphery on the other end opening side of the valve seat, The fluid pressures acting on one end of the valve body or one surface of the wall member and the other surface of the wall member are made to act symmetrically to cancel each other without leaking gas from the valve port with a large valve seat on the annular valve surface of the valve body There is an effect that it can be opened and closed.

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。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の下部の本体３に弁座７を図示しないねじにより取り付ける。弁座７は円筒形状で両端を弁室６に開口すると共に周囲を排出孔８により出口２に連通する。弁座７の一端開口側により弁室６と出口２を連通する弁口９を形成し、他端開口側の内周により摺動部１０を形成する。摺動部１０には気密用のＯリング１１を配置する。入口１は弁室６の下部に開口し、出口２は弁口９及び排出孔８を介して弁室６の下部に開口する。   Hereinafter, an embodiment of the present invention will be described with reference to FIG. The lever float type drain trap constitutes a casing having a valve chamber 6 inside by fastening a lid 4 with a bolt 5 to a main body 3 having an inlet 1 and an outlet 2. A valve seat 7 is attached to the main body 3 below the valve chamber 6 with screws (not shown). The valve seat 7 has a cylindrical shape and both ends open to the valve chamber 6 and communicates with the outlet 2 through the discharge hole 8 at the periphery. A valve port 9 communicating with the valve chamber 6 and the outlet 2 is formed by one end opening side of the valve seat 7, and a sliding portion 10 is formed by the inner periphery of the other end opening side. An airtight O-ring 11 is disposed on the sliding portion 10. 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 valve port 9 and the discharge hole 8.

弁座７に離着座して弁口９を開閉する弁体１２を弁座７内に配置する。弁体１２は円筒形状で一端を開口すると共に他端を壁部材１３により塞いで形成する。弁体１２は一端開口側の環状弁面１４が弁座７の一端開口側の弁口９を開閉すると共に、他端の壁部材１３側の外周が弁座７の他端開口側の内周の摺動部１０を気密的に摺動する。   A valve body 12 that opens and closes on the valve seat 7 to open and close the valve port 9 is disposed in the valve seat 7. The valve body 12 is formed in a cylindrical shape by opening one end and closing the other end with a wall member 13. In the valve body 12, the annular valve surface 14 on the one end opening side opens and closes the valve port 9 on the one end opening side of the valve seat 7, and the outer periphery on the wall member 13 side on the other end is the inner periphery on the other end opening side of the valve seat 7. The sliding portion 10 is slid in an airtight manner.

蓋体４の弁室６内に揺動軸１５を支持し、揺動軸１５にレバー１６の右端部を回転可能に連結する。レバー１６の左端部に弁室６内の液位に応じて浮上降下する中空球形のフロート１７を連結する。レバー１６の右側部に揺動軸１５と平行な連結軸１８を支持し、連結軸１８に連結棒１９の上部を回転可能に連結する。連結棒１９の下部は弁体１２の弁棒２０の上端部に支持された揺動軸１５と平行な弁軸２１に回転可能に連結する。蓋体４の案内部２２で弁棒２０を上下に案内する。   A swing shaft 15 is supported in the valve chamber 6 of the lid 4, and the right end portion of the lever 16 is rotatably connected to the swing shaft 15. A hollow spherical float 17 that rises and falls according to the liquid level in the valve chamber 6 is connected to the left end of the lever 16. A connecting shaft 18 parallel to the swing shaft 15 is supported on the right side of the lever 16, and the upper portion of the connecting rod 19 is rotatably connected to the connecting shaft 18. The lower portion of the connecting rod 19 is rotatably connected to a valve shaft 21 parallel to the swing shaft 15 supported on the upper end portion of the valve rod 20 of the valve body 12. The valve rod 20 is guided up and down by the guide portion 22 of the lid 4.

上記のレバーフロート式ドレントラップの動作は次の通りである。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１７は降下し、弁体１２が弁口９を閉じている。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１７が上動してレバー１６が揺動軸１５を中心に時計回り方向に回転する。このレバー１６の回転により、連結棒１９を介して弁体１２が上動して弁口９を開く。これにより、弁室６のドレンを弁口９から排出孔８を通して出口２に排出する。   The operation of the lever float type drain trap is as follows. When the liquid level in the valve chamber 6 is low, the float 17 is lowered as shown in FIG. 1, and the valve body 12 closes the valve port 9. When the liquid level in the valve chamber 6 rises due to the drain flowing from the inlet 1, the float 17 moves upward and the lever 16 rotates clockwise about the swing shaft 15. The rotation of the lever 16 causes the valve body 12 to move upward through the connecting rod 19 to open the valve port 9. Thereby, the drain of the valve chamber 6 is discharged from the valve port 9 to the outlet 2 through the discharge hole 8.

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１７が下動してレバー１６が揺動軸１５を中心に反時計回り方向に回転する。このレバー１６の回転により、連結棒１９を介して弁体１２が下動して弁口９を閉じる。これにより、気体の漏出を防止する。弁体１２の下方と上方から作用する流体圧力を対称に作用させて互いに相殺することにより、気体を漏出することなく弁体１２で大きな弁口９を開閉することができる。   When the liquid level in the valve chamber 6 is lowered due to the drainage, the float 17 moves downward and the lever 16 rotates counterclockwise about the swing shaft 15. Due to the rotation of the lever 16, the valve body 12 moves downward through the connecting rod 19 to close the valve port 9. This prevents gas leakage. By causing the fluid pressure acting from below and above the valve body 12 to act symmetrically and cancel each other, the large valve port 9 can be opened and closed by the valve body 12 without leaking gas.

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 弁座
８ 排出孔
９ 弁口
１０ 摺動部
１１ Ｏリング
１２ 弁体
１３ 壁部材
１４ 環状弁面
１５ 揺動軸
１６ レバー
１７ フロート
２０ 弁棒 DESCRIPTION OF SYMBOLS 1 Inlet 2 Outlet 3 Main body 4 Cover body 6 Valve chamber 7 Valve seat 8 Discharge hole 9 Valve opening 10 Sliding part 11 O-ring 12 Valve body 13 Wall member 14 Annular valve surface 15 Oscillating shaft 16 Lever 17 Float 20 Valve rod

Claims (1)

ケーシングで入口と弁室と出口を形成し、弁室と出口を連通する弁口を開けた弁座を弁室の下部に形成し、弁室内に支持された揺動軸の周りに回転するレバーを設け、弁室内の液位に応じて浮上降下するフロートをレバーに連結すると共に弁座に離着座して弁口を開閉する弁体をレバーに連結したものにおいて、弁座は円筒形状で両端を弁室に開口すると共に周囲を排出孔により出口に連通し、弁体は円筒形状で一端を開口すると共に他端を壁部材により塞いで一端開口側の環状弁面が弁座の一端開口側の弁口を開閉すると共に他端壁部材側の外周が弁座の他端開口側の内周を気密的に摺動することを特徴とするレバーフロート式ドレントラップ。   A casing that forms an inlet, a valve chamber, and an outlet with a casing, a valve seat that opens a valve port that connects the valve chamber and the outlet is formed at the bottom of the valve chamber, and a lever that rotates around a swing shaft supported in the valve chamber The float that rises and falls according to the liquid level in the valve chamber is connected to the lever, and the valve body that opens and closes the valve seat and opens and closes the valve port is connected to the lever. The valve body has a cylindrical shape and is open at one end and is closed at the other end by a wall member, and the annular valve surface at the one end opening side is at one end opening side of the valve seat A lever float type drain trap characterized in that the valve port of the valve seat is opened and closed, and the outer periphery on the other end wall member side airtightly slides on the inner periphery on the other end opening side of the valve seat.
JP2009031714A 2009-02-13 2009-02-13 Lever float drain trap Active JP5179397B2 (en)

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5524648B2 (en) * 2010-02-15 2014-06-18 株式会社テイエルブイ Lever float drain trap
JP6022199B2 (en) * 2012-04-27 2016-11-09 株式会社テイエルブイ Exhaust valve
CN109973810B (en) * 2019-04-21 2022-03-11 北阀集团北京阀门有限公司 Double-valve-body drain valve and assembling method thereof

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57114093A (en) * 1980-12-30 1982-07-15 Yoshitake Works Float type steam trap
JP3312188B2 (en) * 1994-04-15 2002-08-05 株式会社テイエルブイ Liquid pumping device
JPH11230373A (en) * 1998-02-13 1999-08-27 Tlv Co Ltd Double seat valve

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