JP2009019731A

JP2009019731A - Exhaust valve

Info

Publication number: JP2009019731A
Application number: JP2007184152A
Authority: JP
Inventors: Satoyuki Fujita; 智行藤田
Original assignee: TLV Co Ltd
Current assignee: TLV Co Ltd
Priority date: 2007-07-13
Filing date: 2007-07-13
Publication date: 2009-01-29

Abstract

<P>PROBLEM TO BE SOLVED: To prevent water from leaking even when water sharply flows from an inlet into a valve chest. <P>SOLUTION: The valve chest 3 is formed of a casing comprising a body 1 and a lid 2 and having the inlet 4 opened on a lower part and an outlet 5 opened on an upper part. A valve seat 6 is formed between the valve chest 3 and the outlet 5. The body 1 integrally has a plurality of ribs 9 projecting inward on the inner wall of the valve chest 3, and a bottomed float receiver 10, which is formed in almost cylindrical shape and has a through hole 13 with a large opening area for communication with the inside and the outside, is arranged inside the rib 9. A spherical float 12 is arranged in a free state in the float receiver 10. A water flow receiving member 14 is provided to change the opening area of the through hole 13. The water flow receiving member 14 increases the opening area of the through hole 13 by the force of water sharply flowing from the inlet 4 into the valve chest 3. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、配管に水を送り込むときに開弁して配管内の空気を排気し、排気が終われば閉弁し、また配管系の圧力が低下して真空状態となったときに開弁して外部空気を導入することにより真空状態を破壊する排気弁に関する。 The present invention opens the valve when water is fed into the pipe, exhausts the air in the pipe, closes when the exhaust is finished, and opens when the pressure in the piping system drops to a vacuum state. The present invention relates to an exhaust valve that breaks a vacuum state by introducing external air.

従来の排気弁は、ケーシングで下部に流入口が開口し上部に流出口が開口した弁室を形成し、弁室と流出口の間に弁座を形成し、弁室内壁に内側に突出したリブを形成し、リブの内側に有底のほぼ円筒形状で底部に内外を連通する小さな開口面積の通孔を設けたフロート受けを配し、フロート受け内にフロートを自由状態で配したものである。この排気弁は、先ず配管に水を送り込むときにはフロートが弁座から離座して降下した開弁状態であり、流入口から弁室内に流入してくる配管内の空気をリブの間の空間からフロート受け上端を通して及び通孔からフロート受け内を通して流出口に排気する。そして排気が終わって配管内の水が流入口から弁室内に流入してくると、リブの間の空間からフロート受け上端を通して及び通孔を通してフロート受け内に流入する水によってフロートが浮上して弁座に着座し閉弁する。また配管系の圧力が低下して真空状態となったときにはフロートが弁座から離座して降下し、流出口から弁室内に流入してくる外部空気をフロート受け内から通孔を通して及びフロート受け上端からリブの間の空間を通して流入口から配管内に導入することにより真空状態を破壊する。 A conventional exhaust valve forms a valve chamber with an inlet opening at the bottom and an outlet opening at the top of the casing, forming a valve seat between the valve chamber and the outlet, and projecting inward to the valve chamber wall. A float receiver that has a rib and has a bottomed, almost cylindrical shape with a small opening area that communicates the inside and outside of the rib. The float is placed in the float receiver in a free state. is there. This exhaust valve is in an open state in which when the water is first fed into the pipe, the float is separated from the valve seat and descends, and the air in the pipe flowing into the valve chamber from the inlet is drawn from the space between the ribs. Exhaust through the upper end of the float receiver and through the inside of the float receiver to the outlet. Then, when the exhaust is finished and the water in the pipe flows into the valve chamber from the inlet, the float floats by the water flowing into the float receiver from the space between the ribs through the float receiver upper end and through the through hole. Sit on the seat and close the valve. In addition, when the pressure in the piping system drops to a vacuum state, the float moves away from the valve seat and descends, and external air flowing into the valve chamber from the outlet is passed through the through hole and through the float receiver. The vacuum state is broken by introducing into the pipe from the inlet through the space between the upper end and the rib.

上記従来の排気弁は、水が流入口から弁室内に急激に流入してくると、流出口から漏水してしまう問題点があった。これは、フロート受け底部の通孔の開口面積が小さいので、フロート受け内の水位の上昇が遅れるために、フロートの浮上が遅れ、リブの間の空間からフロート受け上端を通過する水の一部が漏水するためである。
実公昭５３−１６２２号公報 The conventional exhaust valve has a problem that water leaks from the outlet when water suddenly flows into the valve chamber from the inlet. This is because the opening area of the through hole at the bottom of the float receiver is small, so the rise of the water level in the float receiver is delayed, so that the float rises late, and part of the water that passes through the float receiver upper end from the space between the ribs This is because water leaks.
Japanese Utility Model Publication No. 53-1622

従って本発明の技術的課題は、水が流入口から弁室内に急激に流入してきても、漏水を生じない排気弁を提供することである。 Therefore, the technical problem of the present invention is to provide an exhaust valve that does not cause water leakage even when water suddenly flows into the valve chamber from the inlet.

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、ケーシングで下部に流入口が開口し上部に流出口が開口した弁室を形成し、弁室と流出口の間に弁座を形成し、弁室内壁に内側に突出したリブを形成し、リブの内側に有底のほぼ円筒形状で底部に内外を連通する大きな開口面積の通孔を設けたフロート受けを配し、フロート受け内にフロートを自由状態で配し、通孔の開口面積を変化させる水流受け部材を設け、流入口から弁室内に急激に流入する水の勢いで水流受け部材が通孔の開口面積を大きくすることを特徴とするものである。 The technical means of the present invention taken in order to solve the above technical problem is to form a valve chamber having an inflow opening in the lower part and an outflow opening in the upper part in the casing, and between the valve chamber and the outflow opening. A valve seat is formed, a rib that protrudes inward is formed on the inner wall of the valve chamber, and a float receiver that has a substantially cylindrical shape with a bottom and a large opening area that communicates the inside and outside of the bottom is arranged inside the rib. , A float is provided in the float receiver in a free state, a water receiving member is provided to change the opening area of the through hole, and the water receiving member is opened by the momentum of the water that suddenly flows into the valve chamber from the inlet. It is characterized by increasing.

本発明は、水が流入口から弁室内に急激に流入してくると、水流受け部材が大きな開口面積の通孔の開口面積を大きくすることにより、フロート受け内の水位を素早く上昇させてフロートを素早く浮上させることができるので、漏水を生じることがないという優れた効果を生じる。 In the present invention, when water suddenly flows into the valve chamber from the inflow port, the water flow receiving member increases the opening area of the through hole having a large opening area, thereby quickly increasing the water level in the float receiver. As a result, it is possible to cause the water to rise quickly.

本発明は、フロート受けの底部に内外を連通する大きな開口面積の通孔を設け、通孔の開口面積を変化させる水流受け部材を設け、流入口から弁室内に急激に流入する水の勢いで水流受け部材が通孔の開口面積を大きくするものである。そのため、水が流入口から弁室内に急激に流入してくると、水流受け部材が大きな開口面積の通孔の開口面積を大きくすることにより、フロート受け内の水位を素早く上昇させてフロートを素早く浮上させることができる。そのため、水が流入口から弁室内に急激に流入してきても、漏水を生じることがない。 In the present invention, a through hole having a large opening area that communicates the inside and outside is provided at the bottom of the float receiver, a water flow receiving member that changes the opening area of the through hole is provided, and the momentum of water that rapidly flows into the valve chamber from the inlet port The water flow receiving member increases the opening area of the through hole. Therefore, when water suddenly flows into the valve chamber from the inflow port, the water flow receiving member increases the opening area of the through hole having a large opening area, thereby quickly raising the water level in the float receiver and quickly Can surface. Therefore, even if water suddenly flows into the valve chamber from the inlet, water leakage does not occur.

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）。本体１に蓋２をボルトで締結して内部に弁室３を有するケーシングを形成する。本体１の下部に流入口４を形成し、蓋２の上部に流出口５を形成する。蓋２に弁座６を間に挟んで取付部材７をネジで固定する。 An embodiment showing a specific example of the above technical means will be described (see FIG. 1). A lid 2 is fastened to the main body 1 with a bolt to form a casing having a valve chamber 3 therein. An inlet 4 is formed in the lower part of the main body 1, and an outlet 5 is formed in the upper part of the lid 2. The attachment member 7 is fixed with screws with the valve seat 6 interposed between the lid 2 and the valve seat 6.

本体１は弁室３の内壁に内側に突出した複数のリブ９を一体に有し、リブ９の内側に有底のほぼ円筒形状のフロート受け１０をスナップリングで固定する。フロート受け１０はその底部に内外を連通する大きな開口面積の通孔１３を有する。フロート受け１０内に球形のフロート１２を自由状態で配置する。通孔１３は流入口４から弁室３内に急激に流入する水をフロート受け１０内に流入させるために大きな開口面積に形成する。 The main body 1 integrally has a plurality of ribs 9 protruding inwardly on the inner wall of the valve chamber 3, and a bottomed substantially cylindrical float receiver 10 is fixed to the inside of the ribs 9 with a snap ring. The float receiver 10 has a through-hole 13 having a large opening area communicating with the inside and the outside at the bottom. A spherical float 12 is placed in a free state in the float receiver 10. The through hole 13 is formed with a large opening area in order to allow water that suddenly flows into the valve chamber 3 from the inlet 4 to flow into the float receiver 10.

通孔１３を開閉する水流受け部材１４をフロート受け１０の内側にビスで固定する。水流受け部材１４は平板状の弾性金属材からなり、流入口４から弁室３内に空気が流入するときや水が緩やかに流入するときは通孔１３の開口面積を小さくし、水が急激に流入するときは水の勢いで固定部分を支点として時計周り方向に回動することにより通孔１３の開口面積を大きくする。 A water flow receiving member 14 that opens and closes the through hole 13 is fixed to the inside of the float receiver 10 with screws. The water flow receiving member 14 is made of a flat elastic metal material, and when air flows into the valve chamber 3 from the inlet 4 or when water flows gently, the opening area of the through hole 13 is reduced, and the water rapidly When the water flows into the water, the opening area of the through-hole 13 is increased by rotating clockwise with the fixed portion as a fulcrum by the momentum of water.

上記実施例の排気弁の動作は下記の通りである。先ず配管に水を送り込むときには、水流受け部材１４は通孔１３の開口面積を小さくしている。フロート１２は弁座６から離座して降下しフロート受け１０の傾斜壁のリブに載った開弁状態である。これにより、弁室３内に流入してくる配管内の空気をリブ９の間の空間からフロート受け１０上端を通して及び通孔１３からフロート受け１０内を通して流出口５に排気する。 The operation of the exhaust valve of the above embodiment is as follows. First, when water is fed into the pipe, the water receiving member 14 reduces the opening area of the through hole 13. The float 12 is separated from the valve seat 6 and descends and is in a valve-opened state on the rib of the inclined wall of the float receiver 10. As a result, the air in the pipe flowing into the valve chamber 3 is exhausted from the space between the ribs 9 through the upper end of the float receiver 10 and through the through hole 13 into the outlet 5 to the outlet 5.

そして排気が終わって配管内の水が流入口４から弁室３内に緩やかに流入してくると、水流受け部材１４は通孔１３の開口面積を小さくした状態を維持する。フロート１２はリブ９の間の空間からフロート受け１０上端を通して及び通孔１３を通してフロート受け１０内に流入する水によって浮上して弁座６に着座し閉弁する。これにより、水の漏出を防止する。また、配管内の水が流入口４から弁室３内に急激に流入してくると、水流受け部材１４は水の勢いで通孔１３の開口面積を大きくする。フロート１２はリブ９の間の空間からフロート受け１０上端を通して及び開口面積の大きくされた通孔１３を通してフロート受け１０内に流入する水によって素早く浮上して素早く弁座６に着座し閉弁する。これにより、水の漏出を防止する。配管系の圧力が低下して真空状態となったときにはフロート１２が弁座６から離座して降下しフロート受け１０の傾斜壁のリブに載った開弁状態となる。これにより、弁室３内に流入してくる外部空気をフロート受け１０上端からリブ９の間の空間を通して及びフロート受け１０内から通孔１３を通して流入口４から配管内に導入することにより真空状態を破壊する。 Then, when the exhaust is finished and the water in the pipe gradually flows into the valve chamber 3 from the inlet 4, the water flow receiving member 14 maintains a state where the opening area of the through hole 13 is reduced. The float 12 floats by the water flowing into the float receiver 10 from the space between the ribs 9 through the upper end of the float receiver 10 and through the through-hole 13, and is seated on the valve seat 6 and closed. This prevents leakage of water. Further, when the water in the pipe suddenly flows into the valve chamber 3 from the inlet 4, the water flow receiving member 14 increases the opening area of the through hole 13 by the force of water. The float 12 quickly floats by water flowing into the float receiver 10 from the space between the ribs 9 through the upper end of the float receiver 10 and through the through-hole 13 having a large opening area, and quickly sits on the valve seat 6 and closes the valve. This prevents leakage of water. When the pressure in the piping system is reduced to a vacuum state, the float 12 is separated from the valve seat 6 and descends to be in a valve-opened state on the inclined wall rib of the float receiver 10. Thereby, the external air flowing into the valve chamber 3 is introduced into the pipe from the inlet 4 through the space between the upper end of the float receiver 10 and the rib 9 and through the through hole 13 from the float receiver 10 into the pipe. Destroy.

本発明の実施例の排気弁の断面図。Sectional drawing of the exhaust valve of the Example of this invention.

符号の説明Explanation of symbols

１本体
２蓋
３弁室
４流入口
５流出口
６弁座
９リブ
１０フロート受け
１２フロート
１３通孔
１４水流受け部材
DESCRIPTION OF SYMBOLS 1 Main body 2 Lid 3 Valve chamber 4 Inlet 5 Outlet 6 Valve seat 9 Rib 10 Float receptacle 12 Float 13 Through-hole 14 Water flow receiving member

Claims

ケーシングで下部に流入口が開口し上部に流出口が開口した弁室を形成し、弁室と流出口の間に弁座を形成し、弁室内壁に内側に突出したリブを形成し、リブの内側に有底のほぼ円筒形状で底部に内外を連通する大きな開口面積の通孔を設けたフロート受けを配し、フロート受け内にフロートを自由状態で配し、通孔の開口面積を変化させる水流受け部材を設け、流入口から弁室内に急激に流入する水の勢いで水流受け部材が通孔の開口面積を大きくすることを特徴とする排気弁。
In the casing, a valve chamber is formed with an inlet opening at the bottom and an outlet opening at the top, a valve seat is formed between the valve chamber and the outlet, and a rib protruding inward is formed on the valve chamber wall. A float receiver with a bottomed, almost cylindrical shape with a large opening area that communicates with the inside and outside is placed on the inside, and a float is placed in the float receiver in a free state to change the opening area of the through hole. An exhaust valve characterized in that the water flow receiving member is provided, and the water flow receiving member enlarges the opening area of the through hole by the momentum of water that rapidly flows into the valve chamber from the inlet.