JPH053761U - Automatic shut-off constant water level unit - Google Patents
Automatic shut-off constant water level unitInfo
- Publication number
- JPH053761U JPH053761U JP5841091U JP5841091U JPH053761U JP H053761 U JPH053761 U JP H053761U JP 5841091 U JP5841091 U JP 5841091U JP 5841091 U JP5841091 U JP 5841091U JP H053761 U JPH053761 U JP H053761U
- Authority
- JP
- Japan
- Prior art keywords
- valve
- water level
- shutoff
- shut
- diaphragm
- 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.)
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Abstract
(57)【要約】
【目的】 主水管の圧力低下時に遮断弁によって定水位
弁の弁口を閉弁制御し、他の給水設備における水圧低下
によって発生する不測のトラブルを未然に防止し、又全
体のコンパクト化を図ると共に、設備コストを安価にす
る。
【構成】 弁口を開閉させる主弁を有するダイヤフラム
を配設し、ダイヤフラム室と流入口とをブリード流路に
よって連通させた定水位弁２と、受水槽の水位に連動し
て流路を開閉する子弁と、遮断弁本体内に入口及び出口
を有する遮断流路を形成し、該遮断流路中に設ける遮断
弁口に、ダイヤフラムに連結され閉弁方向に弾圧される
遮断弁体を備えた遮断弁とから構成し、該遮断弁の遮断
流路の入口と定水位弁２のダイヤフラム室とを接続する
と共に、遮断流路の出口に子弁を接続し、且つ遮断弁の
パイロット室と定水位弁２の流入口とを接続する。
(57) [Summary] [Purpose] When the pressure in the main water pipe drops, the shutoff valve controls the valve opening of the constant water level valve to prevent unexpected troubles caused by water pressure drop in other water supply equipment. The overall cost is reduced and the equipment cost is reduced. [Structure] A diaphragm having a main valve for opening and closing the valve port is provided, and a constant water level valve 2 in which the diaphragm chamber and the inflow port are connected by a bleed flow path, and the flow path is opened and closed in conjunction with the water level of the water receiving tank. And a shut-off valve having an inlet and an outlet in the shut-off valve body, and the shut-off valve provided in the shut-off flow passage is provided with a shut-off valve body connected to the diaphragm and elastically pressed in the closing direction. And a diaphragm chamber of the constant water level valve 2, and a child valve is connected to the outlet of the shutoff flow path, and a pilot chamber of the shutoff valve is formed. Connect to the inlet of the constant water level valve 2.
Description
【０００１】[0001]
本考案は受水槽への給水回路における上流側である水道本管での異常圧力低下 を防止し、他の給水設備のトラブルを未然に防止する自動遮断定水位弁ユニット に関するものである。 The present invention relates to an automatic shut-off constant water level valve unit that prevents abnormal pressure drop in the water mains upstream of the water supply circuit to the receiving tank and prevents troubles in other water supply equipment.
【０００２】[0002]
従来、受水槽ａを有する給水システムとしては、図３に示す様に水道本管より 分岐した主水管ｂ経路中に給水制御用の定水位弁ｃを介装し、該定水位弁ｃの主 弁を受水槽ａの水位に連動する子弁ｄにより開閉制御している。 Conventionally, as a water supply system having a water receiving tank a, as shown in FIG. 3, a constant water level valve c for water supply control is provided in a main water pipe b path branched from a water main, and the main water level valve c The valve is controlled to open and close by a child valve d that is linked to the water level in the water receiving tank a.
【０００３】 然しながら、水道本管にはボイラーを具備する給湯設備等が更に分岐して設け られ、かかる給湯設備等は主に水圧検出して全自動にて制御されており、このた め受水槽ａへ定水位弁ｃより水が多量に放水されると水道本管の水圧が下がり、 給湯設備等に不測のトラブルが発生する危険を有している。However, hot water supply equipment equipped with a boiler is further diverged in the mains of the water supply, and such hot water supply equipment is mainly controlled automatically by detecting the water pressure. If a large amount of water is discharged from the constant water level valve c to a, the water pressure of the water main falls, and there is a risk of unexpected troubles in hot water supply equipment.
【０００４】 ところが、この圧力低下を防止する手段としては、定水位弁ｃの上流側の主水 管ｂ経路中に圧力低下を検出し、主水管ｂを遮断する緊急遮断弁を設ける場合が 見受けられるも、かかる緊急遮断弁ｅを主水管ｂに設けるために大型のものを使 用すると共に、主水管ｂの口径に合致したものとしなければならず、このため汎 用性がなく特殊仕様となって設備コストが高騰する欠点を有していた。However, as a means for preventing this pressure drop, an emergency shutoff valve that detects the pressure drop and shuts off the main water pipe b is detected in the main water pipe b path upstream of the constant water level valve c. However, in order to provide such an emergency shutoff valve e on the main water pipe b, a large one must be used and must match the diameter of the main water pipe b. Then, there was a drawback that the equipment cost soared.
【０００５】[0005]
本考案は主水管の圧力低下時に自動遮断定水位弁ユニットを構成する遮断弁に よって定水位弁の弁口を閉弁制御し、水道本管より分岐して接続される他の給水 設備における水圧低下によって発生する不測のトラブルを未然に防止し、又全体 のコンパクト化を図ると共に、設備コストを安価にする自動遮断定水位弁ユニッ トを提供せんとするものである。 The present invention controls the valve opening of the constant water level valve by a shutoff valve that constitutes an automatic shutoff constant water level valve unit when the pressure of the main water pipe drops, and controls the water pressure in other water supply equipment branched and connected from the water main. It intends to prevent unforeseen troubles that may occur due to deterioration and to make the whole compact, and to provide an automatic shut-off constant water level valve unit that reduces equipment costs.
【０００６】[0006]
本考案は上記従来技術に基づく主水管の圧力低下に伴って発生する他の給水設 備のトラブル等の課題に鑑み、自動遮断定水位弁ユニットを構成する遮断弁によ って定水位弁の弁口を閉弁制御し、主水管の圧力低下による他の設備への悪影響 を排除させることを要旨とする自動遮断定水位弁ユニットを提供して上記欠点を 解消せんとしたものである。 In view of the problems of other water supply equipment caused by the pressure drop of the main water pipe based on the above-mentioned conventional technology, the present invention uses a shutoff valve that constitutes an automatic shutoff constant water level valve unit to control the constant water level valve. The above-mentioned drawbacks were not solved by providing an automatic shut-off constant water level valve unit whose purpose is to close the valve port and eliminate the adverse effects on the other equipment due to the pressure drop in the main water pipe.
【０００７】 そして、自動遮断定水位弁ユニットとしては、流入口と流出口とを連通させる 弁口を有する定水位弁本体内に、弁口を開閉させる主弁を有するダイヤフラムを 配設し、且つダイヤフラム上部のダイヤフラム室と流入口とをブリード流路によ って連通させた定水位弁と、受水槽の水位に連動して流路を開閉する子弁と、遮 断弁本体内にダイヤフラムによってパイロット室を画成すると共に、入口及び出 口を有する遮断流路を形成し、該遮断流路中に設ける遮断弁口に、ダイヤフラム に連結され閉弁方向に弾圧される遮断弁体を備えた遮断弁とから構成し、該遮断 弁の遮断流路の入口と定水位弁のダイヤフラム室とを接続すると共に、遮断流路 の出口に子弁を接続し、且つ遮断弁のパイロット室と定水位弁の流入口とを接続 している。As the automatic shutoff constant water level valve unit, a diaphragm having a main valve for opening and closing the valve opening is provided in a constant water level valve body having a valve opening for communicating the inflow port and the outflow port, and A constant water level valve that connects the diaphragm chamber above the diaphragm and the inlet through a bleed flow path, a child valve that opens and closes the flow path in conjunction with the water level in the receiving tank, and a diaphragm inside the isolation valve body. In addition to defining the pilot chamber, a shutoff flow passage having an inlet and an outlet is formed, and a shutoff valve body provided in the shutoff flow passage is provided with a shutoff valve body connected to a diaphragm and elastically pressed in a valve closing direction. A shutoff valve, which connects the inlet of the shutoff flow passage of the shutoff valve and the diaphragm chamber of the constant water level valve, connects the slave valve to the outlet of the shutoff flow passage, and connects the pilot chamber of the shutoff valve and the constant water level. Connect with the inlet of the valve ing.
【０００８】[0008]
本考案にあっては、受水槽内の水位が下がることによって子弁が開弁され、定 水位弁のダイヤフラム室の流体が受水槽へ放出され、これに伴ってダイヤフラム 室の圧力が低下することにより、ダイヤフラムが上昇し弁口が開弁する。 In the present invention, when the water level in the water receiving tank is lowered, the child valve is opened, the fluid in the diaphragm chamber of the constant water level valve is discharged to the water receiving tank, and the pressure in the diaphragm chamber is reduced accordingly. As a result, the diaphragm rises and the valve opening opens.
【０００９】 そして、定水位弁の放出が多量となる場合は、主水管の圧力低下が起こり、こ れに伴って定水位弁の流入口と連通する遮断弁のパイロット室の圧力が低下し、 ダイヤフラムが下方へ押圧され、遮断弁体によって遮断弁口を閉弁させ、定水位 弁のダイヤフラム室内の圧力を上昇させ、ダイヤフラムを下降させて弁口を主弁 によって閉弁させる。When the discharge of the constant water level valve becomes large, the pressure of the main water pipe decreases, and the pressure in the pilot chamber of the shutoff valve communicating with the inlet of the constant water level valve decreases accordingly. The diaphragm is pushed downward, the shut-off valve body closes the shut-off valve opening, the pressure inside the diaphragm chamber of the constant water level valve rises, and the diaphragm descends to close the valve opening by the main valve.
【００１０】[0010]
以下本考案の一実施例を図面に基づいて説明すると、 １は本考案に係る自動遮断定水位弁ユニットであり、該自動遮断定水位弁ユニ ット１は定水位弁２と、該定水位弁２に装着する遮断弁３と、受水槽４内の水位 に連動して流路を開閉する子弁５によって構成している。 An embodiment of the present invention will be described below with reference to the drawings. 1 is an automatic shutoff constant water level valve unit according to the present invention, and the automatic shutoff constant water level valve unit 1 is a constant water level valve 2 and the constant water level. It is composed of a shutoff valve 3 mounted on the valve 2 and a child valve 5 which opens and closes the flow path in conjunction with the water level in the water receiving tank 4.
【００１１】 定水位弁２は弁箱６と弁蓋７より定水位弁本体８を構成し、該定水位弁本体８ は一次側圧力室９と連通する流入口10を形成すると共に、二次側圧力室11と連通 する流出口12を形成している。The constant water level valve 2 comprises a valve box 6 and a valve lid 7 to form a constant water level valve main body 8 which forms an inflow port 10 communicating with the primary pressure chamber 9 and a secondary water level valve. An outlet 12 communicating with the side pressure chamber 11 is formed.
【００１２】 又、一次側圧力室９と二次側圧力室11とを隔壁13により区割し、該隔壁13に一 次側圧力室９と二次側圧力室11を連通する弁口14を形成し、該弁口14を開閉する 主弁15を有するダイヤフラム16の周縁部を弁箱６と弁蓋７により挟持して一次側 圧力室９に配設すると共に、ダイヤフラム16をスプリング17にて閉弁方向に弾圧 している。Further, the primary side pressure chamber 9 and the secondary side pressure chamber 11 are divided by a partition wall 13, and the partition wall 13 is provided with a valve port 14 communicating with the primary side pressure chamber 9 and the secondary side pressure chamber 11. A diaphragm 16 having a main valve 15 for opening and closing the valve opening 14 is sandwiched between the valve box 6 and the valve lid 7 and disposed in the primary side pressure chamber 9, and the diaphragm 16 is supported by the spring 17. It is oppressing in the valve closing direction.
【００１３】 又、ダイヤフラム16上面に画成されたダイヤフラム室18と一次側圧力室９とを ブリード流路19にて連通すると共に、該ブリード流路19中に流体抵抗体20、20a …から成るレジスター21を配設し、該レジスター21によって弁口14の閉弁時にダ イヤフラム室18の圧力をコントロールしながら徐々にダイヤフラム室18に流体を 供給して閉弁時のウオーターハンマー等の衝撃をなくしている。Further, the diaphragm chamber 18 defined on the upper surface of the diaphragm 16 and the primary side pressure chamber 9 are communicated with each other by a bleed flow passage 19, and the bleed flow passage 19 includes fluid resistors 20, 20 a. A resistor 21 is provided, and while controlling the pressure in the diaphragm chamber 18 when the valve port 14 is closed by the resistor 21, the fluid is gradually supplied to the diaphragm chamber 18 to eliminate the impact of the water hammer etc. when closing the valve. ing.
【００１４】 22はバイパス管取付口であり、該バイパス管取付口22は一次側圧力室９と連通 させる様に弁箱６の適宜箇所に開口形成している。Reference numeral 22 is a bypass pipe mounting port, and the bypass pipe mounting port 22 is formed at an appropriate location of the valve box 6 so as to communicate with the primary side pressure chamber 9.
【００１５】 23は遮断弁取付口であり、該遮断弁取付口23はダイヤフラム室18と連通させる 様に弁蓋７の適宜箇所に開口形成している。Reference numeral 23 is a shutoff valve mounting port, and the shutoff valve mounting port 23 is formed at an appropriate position of the valve lid 7 so as to communicate with the diaphragm chamber 18.
【００１６】 24は流量を調整する弁蓋７に設ける流量調整棒、又25、25a はストレーナーで ある。Reference numeral 24 is a flow rate adjusting rod provided in the valve lid 7 for adjusting the flow rate, and 25 and 25a are strainers.
【００１７】 遮断弁３は弁箱26と弁蓋27より遮断弁本体28を構成し、該遮断弁本体28は弁箱 26と弁蓋27により周縁部を挟持されたダイヤフラム29によってパイロット室30を 画成し、該パイロット室30と外部連通するパイロット口31を形成すると共に、入 口32及び出口33を有する遮断流路34中に遮断弁口35を形成している。The shut-off valve 3 comprises a shut-off valve body 28 composed of a valve box 26 and a valve lid 27, and the shut-off valve body 28 forms a pilot chamber 30 by a diaphragm 29 whose peripheral portion is sandwiched by the valve box 26 and the valve lid 27. A pilot port 31 which is defined and communicates with the pilot chamber 30 to the outside is formed, and a shutoff valve port 35 is formed in a shutoff flow passage 34 having an inlet 32 and an outlet 33.
【００１８】 又、パイロット室30と遮断流路34は隔壁36により区割され、該隔壁36にはシリ ンダー部37を貫設し、該シリンダー部37に遮断弁口35に着座して開閉すべき遮断 弁体38を水密状にして且つ、上下動自在に貫装すると共に、該遮断弁体38をダイ ヤフラム29に連結している。Further, the pilot chamber 30 and the shutoff flow path 34 are divided by a partition wall 36, and a cylinder portion 37 is provided through the partition wall 36, and the cylinder portion 37 is seated at the shutoff valve port 35 to open and close. The shut-off valve body 38 is made watertight and penetrates so as to be movable up and down, and the shut-off valve body 38 is connected to the diaphragm 29.
【００１９】 又、ダイヤフラム29は調整ネジ39によって弾発力を調整されるスプリング40に て閉弁方向に弾圧している。Further, the diaphragm 29 is elastically pressed in a valve closing direction by a spring 40 whose elastic force is adjusted by an adjusting screw 39.
【００２０】 そして、遮断弁３の入口32を定水位弁２を構成する弁蓋７の遮断弁取付口23に 接続し、遮断弁３の遮断流路34と定水位弁２のダイヤフラム室18とを連通させ、 又定水位弁２のバイパス管取付口22と遮断弁３のパイロット口31とをバイパス管 41により接続すると共に、フロート42の上下動により機械的に流路を開閉制御す る受水槽４内に配設される子弁５を連通管43によって接続している。Then, the inlet 32 of the shutoff valve 3 is connected to the shutoff valve mounting opening 23 of the valve lid 7 constituting the constant water level valve 2, and the shutoff flow path 34 of the shutoff valve 3 and the diaphragm chamber 18 of the constant water level valve 2 are connected. The bypass pipe mounting port 22 of the constant water level valve 2 and the pilot port 31 of the shutoff valve 3 are connected by the bypass pipe 41, and the vertical movement of the float 42 mechanically controls the opening and closing of the flow path. A child valve 5 arranged in the water tank 4 is connected by a communication pipe 43.
【００２１】 次に本考案に係る自動遮断定水位弁ユニットの作用について説明すると、 水道本管（図示せず）より分岐された主水管44に介装された自動遮断定水位弁 ユニット１は、通常受水槽４内の水位が下がることによってフロート42が下降し 子弁５が開弁され、定水位弁２のダイヤフラム室18の流体が受水槽４へ放出され 、これに伴ってダイヤフラム室18の圧力が低下することにより、ダイヤフラム16 が上昇し主弁15が弁口14より離脱して開弁し、定水位弁２の流出口12より吐水管 45を介して受水槽４内に放出される。Next, the operation of the automatic shutoff water level valve unit according to the present invention will be described. The automatic shutoff water level valve unit 1 installed in the main water pipe 44 branched from the water main (not shown) is Normally, when the water level in the water receiving tank 4 is lowered, the float 42 is lowered and the child valve 5 is opened, and the fluid in the diaphragm chamber 18 of the constant water level valve 2 is discharged to the water receiving tank 4, and along with this, the When the pressure decreases, the diaphragm 16 rises and the main valve 15 separates from the valve port 14 and opens, and is discharged from the outlet 12 of the constant water level valve 2 into the water receiving tank 4 through the discharge pipe 45. .
【００２２】 上記定水位弁２の放出が多量となる場合は、主水管44の圧力低下が起こり、こ の圧力低下は定水位弁２の一次側圧力室９の圧力低下となり、これに伴って一次 側圧力室９と連通する遮断弁３のパイロット室30の圧力低下を来たし、ダイヤフ ラム29がスプリング40の弾発力によって下方へ押圧され、ダイヤフラム29に連結 している遮断弁体38によって遮断弁口35を閉弁し、この結果定水位弁２のダイヤ フラム室18内の圧力が上昇し、ダイヤフラム16が下降して弁口14を主弁15によっ て閉弁させて受水槽４への放出を停止させる。When a large amount of the constant water level valve 2 is discharged, a pressure drop in the main water pipe 44 occurs, and this pressure decrease causes a pressure drop in the primary side pressure chamber 9 of the constant water level valve 2, and accordingly. The pressure in the pilot chamber 30 of the shutoff valve 3 communicating with the primary side pressure chamber 9 is reduced, the diaphragm 29 is pressed downward by the elastic force of the spring 40, and shut off by the shutoff valve body 38 connected to the diaphragm 29. The valve port 35 is closed. As a result, the pressure in the diaphragm chamber 18 of the constant water level valve 2 rises, the diaphragm 16 descends, and the valve port 14 is closed by the main valve 15 to the water tank 4. Stop the release of.
【００２３】[0023]
要するに本考案は、流入口10と流出口12とを連通させる弁口14を有する定水位 弁本体８内に、弁口14を開閉させる主弁15を有するダイヤフラム16を配設し、且 つダイヤフラム16上部のダイヤフラム室18と流入口10とをブリード流路19によっ て連通させた定水位弁２と、受水槽４の水位に連動して流路を開閉する子弁５と 、遮断弁本体28内にダイヤフラム29によってパイロット室30を画成すると共に、 入口32及び出口33を有する遮断流路34を形成し、該遮断流路34中に設ける遮断弁 口35に、ダイヤフラム29に連結され閉弁方向に弾圧される遮断弁体38を備えた遮 断弁３とから構成し、該遮断弁３の遮断流路34の入口32と定水位弁２のダイヤフ ラム室18とを接続すると共に、遮断流路34の出口33に子弁５を接続し、且つ遮断 弁３のパイロット室30と定水位弁２の流入口10とを接続したので、主水管44と連 通する流入口10側に圧力低下が発生すると、流入口10と連通する遮断弁３のパイ ロット室30の圧力が低下し、ダイヤフラム29に連結している遮断弁体38によって 遮断弁口35を閉弁し、この結果定水位弁２のダイヤフラム室18内の圧力が上昇し 、ダイヤフラム16が下降して弁口14を主弁15によって閉弁させて受水槽４への放 出を停止させることが出来、よって水道本管より分岐して接続される他の給水設 備における水圧低下によって発生する不測のトラブルを未然に防止することが出 来る。 In short, according to the present invention, the diaphragm 16 having the main valve 15 for opening and closing the valve port 14 is arranged in the constant water level valve body 8 having the valve port 14 for communicating the inflow port 10 and the outflow port 12, and 16 A constant water level valve 2 that connects the upper diaphragm chamber 18 and the inflow port 10 with each other through a bleed flow path 19, a sub valve 5 that opens and closes the flow path in conjunction with the water level in the water receiving tank 4, and a shutoff valve body A pilot chamber 30 is defined by a diaphragm 29 in 28, and a shutoff passage 34 having an inlet 32 and an outlet 33 is formed, and a shutoff valve opening 35 provided in the shutoff passage 34 is connected to the diaphragm 29 and closed. The shut-off valve 3 is provided with a shut-off valve body 38 that is pressed in the valve direction, and the inlet 32 of the shut-off flow path 34 of the shut-off valve 3 is connected to the diaphragm chamber 18 of the constant water level valve 2. The child valve 5 is connected to the outlet 33 of the shutoff flow path 34, and the pilot chamber 30 of the shutoff valve 3 and the constant water level valve 2 are connected. Since a pressure drop occurs on the side of the inlet 10 that communicates with the main water pipe 44, the pressure in the pilot chamber 30 of the shut-off valve 3 that communicates with the inlet 10 decreases and the diaphragm 29 The shut-off valve body 38 connected to the shut-off valve port 35 closes the shut-off valve port 35. As a result, the pressure in the diaphragm chamber 18 of the constant water level valve 2 rises, the diaphragm 16 descends and the valve port 14 is opened by the main valve 15. It is possible to close the valve to stop the discharge to the water receiving tank 4, and thus to prevent the unexpected trouble caused by the water pressure drop in other water supply equipment branched and connected from the water main. Come out.
【００２４】 又、大口径である主水管44には自動遮断定水位弁ユニット１の定水位弁２を介 装することだけでよいため、従来の緊急遮断弁を設けるものに比し、全体をコン パクトにすることが出来ると共に、遮断弁３が小型で済むため、その設備コスト を安価にすることが出来る等その実用的効果甚だ大なるものである。Further, since the main water pipe 44 having a large diameter need only be provided with the constant water level valve 2 of the automatic shut-off constant water level valve unit 1, the whole structure can be compared with a conventional emergency shutoff valve. In addition to being compact, the shut-off valve 3 can be small in size, so that the equipment cost can be reduced, which is a great practical effect.
【図１】本考案に係る自動遮断定水位弁ユニットの子弁
を省略した断面図である。FIG. 1 is a cross-sectional view of an automatic shutoff constant water level valve unit according to the present invention in which a child valve is omitted.
【図２】自動遮断定水位弁ユニットを使用した受水槽給
水システムの配管状態を示す図である。FIG. 2 is a diagram showing a piping state of a water receiving tank water supply system using an automatic shutoff constant water level valve unit.
【図３】従来の受水槽給水システムの配管状態を示す図
である。FIG. 3 is a diagram showing a piping state of a conventional water receiving tank water supply system.
２ 定水位弁 ３ 遮断弁 ４ 受水槽 ５ 子弁 ８ 定水位弁本体 10 流入口 12 流出口 14 弁口 15 主弁 16 ダイヤフラム 18 ダイヤフラム室 19 ブリード流路 28 遮断弁本体 29 ダイヤフラム 30 パイロット室 32 入口 33 出口 34 遮断流路 35 遮断弁口 38 遮断弁体 2 Constant water level valve 3 Shutoff valve 4 Water receiving tank 5 Sub valve 8 Constant water level valve body 10 Inlet 12 Outlet 14 Valve opening 15 Main valve 16 Diaphragm 18 Diaphragm chamber 19 Bleed flow passage 28 Shutoff valve body 29 Diaphragm 30 Pilot chamber 32 Inlet 33 Outlet 34 Shutoff flow path 35 Shutoff valve port 38 Shutoff valve body
Claims (1)
する定水位弁本体内に、弁口を開閉させる主弁を有する
ダイヤフラムを配設し、且つダイヤフラム上部のダイヤ
フラム室と流入口とをブリード流路によって連通させた
定水位弁と、受水槽の水位に連動して流路を開閉する子
弁と、遮断弁本体内にダイヤフラムによってパイロット
室を画成すると共に、入口及び出口を有する遮断流路を
形成し、該遮断流路中に設ける遮断弁口に、ダイヤフラ
ムに連結され閉弁方向に弾圧される遮断弁体を備えた遮
断弁とから構成し、該遮断弁の遮断流路の入口と定水位
弁のダイヤフラム室とを接続すると共に、遮断流路の出
口に子弁を接続し、且つ遮断弁のパイロット室と定水位
弁の流入口とを接続したことを特徴とする自動遮断定水
位弁ユニット。[Claims for utility model registration] [Claim 1] A diaphragm having a main valve for opening and closing the valve opening is provided in a constant water level valve body having a valve opening for communicating the inlet and the outlet. A constant water level valve that connects the upper diaphragm chamber and the inlet with a bleed flow path, a child valve that opens and closes the flow path in conjunction with the water level in the receiving tank, and a diaphragm inside the shutoff valve body that defines the pilot chamber And a shut-off valve having a shut-off flow passage having an inlet and an outlet, and a shut-off valve body provided in the shut-off flow passage and provided with a shut-off valve body which is connected to the diaphragm and elastically pressed in the valve closing direction. Connecting the inlet of the shutoff flow passage of the shutoff valve and the diaphragm chamber of the constant water level valve, connecting a slave valve to the outlet of the shutoff flow passage, and connecting the pilot chamber of the shutoff valve and the inlet of the constant water level valve. Self characterized by being connected Cutoff constant water level valve unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5841091U JP2552763Y2 (en) | 1991-06-28 | 1991-06-28 | Automatic shutoff constant water level valve unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5841091U JP2552763Y2 (en) | 1991-06-28 | 1991-06-28 | Automatic shutoff constant water level valve unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH053761U true JPH053761U (en) | 1993-01-22 |
| JP2552763Y2 JP2552763Y2 (en) | 1997-10-29 |
Family
ID=13083604
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5841091U Expired - Lifetime JP2552763Y2 (en) | 1991-06-28 | 1991-06-28 | Automatic shutoff constant water level valve unit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2552763Y2 (en) |
-
1991
- 1991-06-28 JP JP5841091U patent/JP2552763Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JP2552763Y2 (en) | 1997-10-29 |
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