JP6986241B2

JP6986241B2 - Drainage device

Info

Publication number: JP6986241B2
Application number: JP2017114769A
Authority: JP
Inventors: 大輔服部
Original assignee: 丸一株式会社
Priority date: 2017-06-09
Filing date: 2017-06-09
Publication date: 2021-12-22
Anticipated expiration: 2037-06-09
Also published as: JP2019002132A

Description

本発明は、排水装置に関するものであって、更に詳しくは、槽体内の水（給水乃至貯水）が、設定した任意の水位を超えた場合に、余剰の貯水を排出して槽体内の任意の水位を保つ、排水装置に関するものである。 The present invention relates to a drainage device, and more specifically, when the water (water supply or water storage) in the tank exceeds an arbitrary water level set, excess water is discharged to any arbitrary water in the tank. It is about a drainage device that keeps the water level.

従来より、洗面台や流し台、浴槽など、槽体を備え、使用により排水を生じる機器（以下「排水機器」と記載）において、槽体内部に生じた給水を、下水側へ排出するための配管（排水配管）が知られている。
該排水配管は、槽体の底面に排水口と呼ばれる開口を設け、この排水口から排水配管を利用して排水配管の配管を行い、槽体内の給水を下水側に排出している。
ところで、槽体には必要に応じ内部の給水の排出を行う一方で、洗面ボウルであれば洗濯や洗髪等の為に、浴槽であれば入浴の為に、槽体内に給水を貯水したい、という要望がある。このため、槽体の排水口に弁部材を配置して排水口を閉口し、給水を行うことで槽体内に貯水を行う場合がある。
しかし、排水口を閉口したまま、貯水のため給水を継続すると、槽体の内部に必要以上に貯水が溜まり、槽体の上縁から溢れて排水機器や床面などを破損・又は汚損してしまう、という状況が生じる。これを防止するため、槽体の上縁近傍に、底面の排水口とは別に、オーバーフロー排水口と呼ばれる槽体内の水位が一定の水位以上となった場合に、オーバーフロー排水口の高さを超えた貯水のみ排水を行う排水口を設け、槽体内に貯水した状態を維持しつつ、且つ槽体上縁から貯水が溢れることを防止する排水配管が知られている。 Conventionally, in equipment such as wash basins, sinks, and bathtubs that are equipped with a tank body and generate drainage by use (hereinafter referred to as "drainage equipment"), piping for discharging the water supply generated inside the tank body to the sewage side. (Drainage piping) is known.
The drainage pipe is provided with an opening called a drainage port on the bottom surface of the tank body, and the drainage pipe is piped from this drainage port by using the drainage pipe to discharge the water supply in the tank body to the sewage side.
By the way, while draining the internal water supply to the tank body as needed, he wants to store the water supply inside the tank body for washing and washing hair in the case of a washbasin and for bathing in the bathtub. I have a request. Therefore, there is a case where a valve member is arranged at the drainage port of the tank body, the drainage port is closed, and water is supplied to store water in the tank body.
However, if water supply is continued for water storage with the drainage port closed, more water will be stored inside the tank body and overflow from the upper edge of the tank body, damaging or soiling the drainage equipment and floor surface. There will be a situation where it will end up. In order to prevent this, in the vicinity of the upper edge of the tank body, apart from the drainage port on the bottom, when the water level in the tank body called the overflow drainage port exceeds a certain level, the height of the overflow drainage port is exceeded. There is known a drainage pipe that provides a drainage port for draining only the stored water, maintains the state of storing water in the tank body, and prevents the stored water from overflowing from the upper edge of the tank body.

このようなオーバーフロー配管は、槽体内の貯水を溢れさせない、という点では有効であるが、次のような問題があった。
１．槽体にオーバーフロー配管を行うことができない場合があった。具体的には、意匠性を良くする等の理由から、元々槽体にオーバーフロー排水口を取り付ける為の開口を設けていない場合があり、このような場合にはオーバーフロー配管を行うことができない。
２．槽体にオーバーフロー排水口を設けてオーバーフロー配管を行った場合、オーバーフロー排水口の開口が槽体内に露出する。オーバーフロー排水口は狭隘なため清掃し難く、またオーバーフロー排水口内には水垢等が溜まりやすく、槽体の意匠性を悪化させていた。 Such an overflow pipe is effective in that it does not overflow the water stored in the tank, but has the following problems.
1. 1. In some cases, it was not possible to install overflow piping in the tank body. Specifically, for reasons such as improving the design, there are cases where the tank body is not originally provided with an opening for attaching an overflow drainage port, and in such a case, overflow piping cannot be performed.
2. 2. When an overflow drainage port is provided in the tank body and overflow piping is performed, the opening of the overflow drainage port is exposed inside the tank body. Since the overflow drainage port is narrow, it is difficult to clean it, and water stains and the like tend to collect in the overflow drainage port, which deteriorates the design of the tank body.

そこで、特許文献１のような、槽体にオーバーフロー排水の機能を持たせながら、槽体の上縁近傍にオーバーフロー排水口を設ける必要の無い排水装置が提案されている。
特許文献１に記載の排水装置は、槽体としての洗面ボウルと、該洗面ボウルの底面に設けた排水口と、該排水口を閉口する弁部材と、からなり、この弁部材に、槽体に溜めたい水位まで貯水が行われると、その水位の水圧によって開口する圧力弁を備えてなる。尚、この「槽体に溜めたい水位」を、以下「貯水水位」と呼ぶ。特許文献１の圧力弁は、槽体内の水位が、貯水水位に達した時に開口するように調整されてなる。
上記弁部材によって排水口を閉塞した上で、洗面ボウル内に給水を行うと、洗面ボウル内に貯水が行われ、貯水水位に達したところで、弁部材の圧力弁が貯水による水圧によって開口し、洗面ボウル内の貯水を排水口の下流側に排出する。
圧力弁を介しての排水が穏やかに行われる場合では、洗面ボウル内の貯水水位を超えて圧力弁に充分な水圧が作用すると、圧力弁が開口し、圧力弁を介して排水が行われることで洗面ボウル内の水位が降下する。そして、洗面ボウル内の水位が貯水水位まで降下すると、圧力弁近傍での水圧も降下し、それにより圧力弁が閉口して洗面ボウル内の貯水の流出が止まり、洗面ボウル内の水位を貯水水位に維持する。
このようにして、洗面ボウル内の貯水が貯水水位を超えた際のみ圧力弁が開口して排水を行うことで、オーバーフロー排水口等のオーバーフロー配管を行うことなく、洗面ボウル内の水位を一定の水位（貯水水位）に保ち、槽体である洗面ボウルの縁から貯水が溢れることを防止することができる。 Therefore, there has been proposed a drainage device such as Patent Document 1 in which the tank body has an overflow drainage function but does not need to be provided with an overflow drainage port near the upper edge of the tank body.
The drainage device described in Patent Document 1 includes a wash bowl as a tank body, a drain port provided on the bottom surface of the wash bowl, and a valve member that closes the drain port, and the valve member has a tank body. When water is stored up to the water level you want to store in, it is equipped with a pressure valve that opens according to the water pressure at that water level. In addition, this "water level to be stored in the tank body" is hereinafter referred to as "reservoir water level". The pressure valve of Patent Document 1 is adjusted so that the water level in the tank opens when the water level reaches the water storage level.
When water is supplied to the wash bowl after the drain port is closed by the valve member, water is stored in the wash bowl, and when the water storage level is reached, the pressure valve of the valve member opens due to the water pressure of the water storage. Drain the water stored in the wash bowl to the downstream side of the drain.
When drainage through the pressure valve is gentle, when sufficient water pressure acts on the pressure valve beyond the water storage level in the wash bowl, the pressure valve opens and drainage is performed through the pressure valve. The water level in the wash bowl drops. When the water level in the wash bowl drops to the water storage level, the water pressure near the pressure valve also drops, which closes the pressure valve and stops the outflow of the stored water in the wash bowl, and the water level in the wash bowl becomes the water storage level. To maintain.
In this way, the pressure valve opens to drain water only when the water stored in the wash bowl exceeds the water storage level, so that the water level in the wash bowl is kept constant without performing overflow piping such as an overflow drain port. It is possible to keep the water level (water storage level) and prevent the water storage from overflowing from the edge of the wash bowl, which is the tank body.

特開２０１６−２０４８９５号（第六実施例）JP-A-2016-204895 (6th Example)

上記排水装置において、圧力弁からの排水が大量の場合、圧力弁より下流の配管内が満水状態となり、サイホン現象と呼ばれる、高い負圧が下流側に発生する場合がある。
圧力弁は、圧力弁の上流と下流との間での圧力差が一定値を超えた場合に開口するため、「圧力弁の下流側に大きな負圧が生じた状態」でも、「圧力弁の上流側に大きな正圧が生じた状態」と同様に開口してしまう。このため、サイホン現象が生じて、圧力弁の下流側に大きな負圧が生じた状態では、槽体内の水位による圧力に関係なく、圧力弁の下流側の負圧によって圧力弁が開口したままとなってしまう。結果、槽体内の水位は、貯水水位、またはそれ以下まで水位が低くなっているにも関わらず、圧力弁の下流側に作用している負圧により圧力弁が開口したまま槽体内の水位が降下し、槽体内の貯水量が不十分な状態となってしまう、という問題があった。
本発明は上記問題点に鑑み発明されたものであって、圧力弁を利用することで、オーバーフロー配管を採用することなく、槽体の貯水時に槽体内の水位を一定の水位に保つようにした排水装置において、サイホン現象により槽体内の水位が設定よりも低くなることを防止する排水栓装置を提供するためのものである。 In the above drainage device, when a large amount of drainage from the pressure valve is performed, the inside of the pipe downstream from the pressure valve becomes full, and a high negative pressure called a siphon phenomenon may occur on the downstream side.
Since the pressure valve opens when the pressure difference between the upstream and downstream of the pressure valve exceeds a certain value, even in "a state where a large negative pressure is generated on the downstream side of the pressure valve", "the pressure valve It opens in the same way as "a state in which a large positive pressure is generated on the upstream side". Therefore, when a siphon phenomenon occurs and a large negative pressure is generated on the downstream side of the pressure valve, the pressure valve remains open due to the negative pressure on the downstream side of the pressure valve regardless of the pressure due to the water level in the tank. turn into. As a result, even though the water level in the tank is as low as the stored water level or lower, the water level in the tank remains open due to the negative pressure acting on the downstream side of the pressure valve. There was a problem that it descended and the amount of water stored in the tank became insufficient.
The present invention has been invented in view of the above problems, and by using a pressure valve, the water level in the tank body is kept at a constant level when the water is stored in the tank body without adopting an overflow pipe. The purpose of the drainage device is to provide a drainage plug device for preventing the water level in the tank from becoming lower than the setting due to the siphon phenomenon.

請求項１に記載の本発明は、槽体と、該槽体に備えられて槽体内の水を排出する排水口と、該排水口を閉口する弁部材と、槽体内からの圧力が設定した値を超えたときに開口し、槽体内の水を下水側に排出する圧力弁と、圧力弁の下流側の配管に備えられて、配管内から配管外への排水の流出を防止すると共に、配管内に負圧が発生した場合に、配管外から配管内へ吸気を行い、配管内の負圧を緩和する吸気弁と、から構成され、圧力弁からの配管に排水トラップが備えられると共に、吸気弁が、排水トラップの上流に備えられてなることを特徴とする排水装置である。 In the present invention according to claim 1, a tank body, a drainage port provided in the tank body for discharging water in the tank body, a valve member for closing the drainage port, and a pressure from the tank body are set. A pressure valve that opens when the value is exceeded and discharges the water inside the tank to the sewage side and a pipe on the downstream side of the pressure valve are provided to prevent the outflow of drainage from the inside of the pipe to the outside of the pipe. When a negative pressure is generated in the pipe, it is composed of an intake valve that takes in air from the outside of the pipe to the inside of the pipe and relieves the negative pressure in the pipe. intake valve is a drainage device, characterized in Rukoto such provided upstream of the drain trap.

請求項２に記載の本発明は、上記排水装置において、
圧力弁からの配管が、排水口からの配管に合流することを特徴とする、請求項１に記載の排水装置である。 The present invention according to claim 2 is the drainage device.
The drainage device according to claim 1, wherein the pipe from the pressure valve joins the pipe from the drain port.

請求項３に記載の本発明は、上記排水装置において、
圧力弁が、弁部材に備えられてなることを特徴とする、請求項１または請求項２に記載の排水装置である。 The present invention according to claim 3 is the drainage device.
The drainage device according to claim 1 or 2, wherein the pressure valve is provided in the valve member.

請求項４に記載の本発明は、上記排水装置において、
吸気弁が、圧力弁からの配管を中心として環状に配置されてなることを特徴とする、請求項１乃至請求項３のいずれか一つに記載の排水装置である。 The present invention according to claim 4 is the drainage device.
The drainage device according to any one of claims 1 to 3 , wherein the intake valve is arranged in an annular shape around a pipe from the pressure valve.

請求項５に記載の本発明は、上記排水装置において、
弁部材の排水口を開閉する動作が、弁部材から離間した位置に設けた操作部への操作によって行われることを特徴とする、請求項１乃至請求項４のいずれか一つに記載の排水装置である。 The present invention according to claim 5 is the drainage device.
The drainage according to any one of claims 1 to 4 , wherein the operation of opening and closing the drain port of the valve member is performed by operating an operation unit provided at a position separated from the valve member. It is a device.

本発明の排水装置を採用した洗面台の断面図である。It is sectional drawing of the wash basin which adopted the drainage device of this invention. 第一実施例の排水装置の部材構成を示す参考図である。It is a reference figure which shows the member composition of the drainage device of 1st Example. 吸気弁部材の部材構成を示す参考図である。It is a reference figure which shows the member composition of the intake valve member. 第一実施例の排水装置の閉口状態を示す断面図である。It is sectional drawing which shows the closed state of the drainage device of 1st Example. 第一実施例の排水装置の開口状態を示す断面図である。It is sectional drawing which shows the opening state of the drainage device of 1st Example. 第一実施例の排水装置の、作動状態を示す主要部材の断面図である。It is sectional drawing of the main member which shows the operating state of the drainage device of 1st Example. 図６の排水配管の部材構成を示す参考図である。It is a reference figure which shows the member composition of the drainage pipe of FIG. 他の実施例の排水配管の断面図である。It is sectional drawing of the drainage pipe of another Example.

以下に本発明の第一実施例を、図面を参照しつつ説明する。
図１乃至図８に示した、本発明の第一実施例の排水装置を採用した排水配管は、以下に記載する、洗面台Ｓ、排水口本体１、吸気弁部材４、継手部材８、弁部材２、操伝達部材としてのレリースワイヤ９、トラップ配管１２、操作部１１、から構成される。
洗面台Ｓは、槽体としての洗面ボウルＢと、該洗面ボウルＢを載置する、内部に配管空間を備えたキャビネットＣと、から構成される。
洗面ボウルＢについて詳述すると、洗面ボウルＢは、上方が開口した箱体であって、底面には排水口本体１を取り付ける取付口Ｂ１を、上方の開口周縁には操作部１１を取り付ける操作部取付口Ｂ２を、それぞれ備えてなる。
排水口本体１は、内部に排水流路を形成する略円筒形状の部材であって、その内部の流路の上端に排水口１ａを、上縁に外方向に突出した鍔部１ｂを、鍔部１ｂ下方の側面に雄ネジを、それぞれ備えてなる。
また排水口本体１の雄ネジと螺合する雌ネジを備えた板ナット部材１ｃを備えてなる。
吸気弁部材４は、上端は排水口本体１下端に、下端は継手部材８上端に、それぞれ接続される部材であって、図３に示したように、吸気弁上部５、吸気弁下部６、及び吸気弁本体７の３つの部材から構成される。
吸気弁上部５は、直線状の管体の周縁に、後述する弁座部６ａを覆うカバー部５ａを備えた部材である。
吸気弁下部６は、直線状の管体の上縁から外側方向に、周縁に沿って複数個所開口を設けた弁座部６ａを備えてなる。尚、弁座部６ａの開口の周縁上面には凸条が備えられて、弁座部６ａと吸気弁本体７との貼り付きを防止する。
吸気弁本体７は、シリコンゴムなどの弾性を備えた素材からなる、リング状の薄板の部材である。
上記各部材から構成される吸気弁部材４は、以下のようにして組み立てられる。
吸気弁下部６の弁座部６ａ上に、吸気弁本体７を、吸気弁下部６の弁座部６ａと吸気弁本体７のリング状部分が同心円を成すように配置する。さらに、吸気弁本体７の中央を挿通するようにして、吸気弁上部５の管体の下端部分を挿通し、吸気弁上部５のカバー部５ａの外側端部と、吸気弁部材４の弁座部６ａの外周縁とを気密且つ水密的に接続して、吸気弁部材４の組み立てが完了する。この組み立ては通常工場等で行われ、施工現場においては、吸気弁部材４として完成した状態で搬入される。尚、この吸気弁部材４は、管体の周囲に周縁に沿って弁座部６ａ等吸気弁の機能を生じる部分を設けてなり、後述するように圧力弁３からの配管に吸気弁部材４が接続されることから、本実施例は圧力弁３からの配管を中心として環状に配置された部材である。
継手部材８は、略Ｔ字形状に形成された管体であって、上下に延出された本体部８ａと、その側面から水平方向に延出された枝管部８ｂと、からなり、枝管部８ｂ内は、後述するレリースワイヤ９の押上片１０ｂが、傾くことなく適切な方向に回動自在なまま進退できるよう構成される。
レリースワイヤ９は、操作部１１に加えられた操作を、弁部材２に伝達するための操作伝達部材であって、筒状にして軸方向に剛性を、側面方向に可撓性を備えたアウターチューブ９ａと、上記アウターチューブ９ａ内を摺動自在に動作する、軸方向に剛性を、側面方向に可撓性を備えたインナーワイヤ９ｂと、インナーワイヤ９ｂの排水口１ａ側端部に備えられた押上機構１０と、枝管部の端部を閉塞するキャップ部材９ｃと、から構成される。押上機構１０について詳述すると、押上機構１０は、インナーワイヤ９ｂ端部に接続して、インナーワイヤ９ｂの進退に合わせて枝管部８ｂ内を進退する筒体部１０ａと、この筒体部１０ａに回動自在に軸支された押上片１０ｂと、からなり、筒体部１０ａが枝管部８ｂ内において操作部１１側に後退すると、押上片１０ｂはその一部が枝管部８ｂ内に収納されると共に、その先端部分が継手部材８の本体部８ａの中央付近で上昇する。
また、筒体部１０ａが枝管部８ｂ内において継手部材８の本体部８ａ側に前進すると、押上片１０ｂはその先端部分が継手部材８の本体部８ａの中央付近で降下する。
操作部１１は、洗面ボウルＢの操作部取付口Ｂ２に取り付けられる部材であって、円筒状であって、操作部取付口Ｂ２に固定されると共にレリースワイヤ９のアウターチューブ９ａ端部が接続される操作部本体１１ａと、操作部本体１１ａ内を進退すると共に、インナーワイヤ９ｂ部が接続されるツマミ部１１ｂと、から構成される。
弁部材２は、略円盤状からなり排水口１ａを覆うことで排水口１ａを水密的に閉口する弁体２ａと、該弁体２ａの中央を貫通するように設けられた圧力弁３と、圧力弁３の下面中央位置から垂下される棒状の弁軸２ｂと、弁軸２ｂ上に配置された、弁軸２ｂが排水口本体１内を上下動する際、傾斜しないようにガイドする目皿部材２ｄと、弁体２ａ上面に配置される目隠し部２ｅと、から構成される。
圧力弁３について詳述すると、圧力弁３は、弁体２ａの中央に設けられた貫通孔３ａと、この貫通孔３ａを下方から閉塞する圧力弁本体３ｂと、貫通孔３ａの周囲から弁体２ａの中央位置まで延出する複数の支持リブ２ｃと、から構成されてなる。支持リブ２ｃは、弁体２ａの下方中央付近で集合して弁軸２ｂに接続されてなる。また、圧力弁本体３ｂは上下方向に昇降自在で、水平方向には位置ずれを起こさないようにガイドされる。圧力弁本体３ｂと目隠し部２ｄ内部には磁性体としての磁石（図示せず）が互いを引き合うように備えられてなり、圧力弁本体３ｂは、一定の荷重が圧力弁本体３ｂに加えられるまでは目隠し部２ｄの磁石の磁力によって引き上げられて貫通孔３ａを閉塞するように構成され、磁力によって設定される値を超えた荷重が加えられた場合は、貫通孔３ａ周縁から離間して貫通孔３ａから支持リブ２ｃの間を通過する排水の流路を形成する。尚、圧力弁本体３ｂの磁石は、貫通孔３ａを閉塞している状態でも、ある程度目隠し弁２ｄの磁石から離間した位置で停止し、それ以上接近しないように構成されている。磁石の磁力は距離の２乗に反比例するため、圧力弁３に作用する磁石同士がほぼ接触するまで接近する構造とすると、磁力による引き付ける力が極めて増大し、少なくとも洗面ボウルＢ内の貯水の水圧等では分離させることがほぼ不可能な強さとなってしまう。このため、本実施例の圧力弁３では、磁石同士を充分離間させ、磁石の強さが近似的に距離に比例して作用する程度の間隔を確保して構成している。
また、圧力弁本体３ｂに作用する荷重は、圧力弁本体３ｂの自重、及び圧力弁本体３ｂの貯水に触れる面積と弁部材２に作用する水圧から求めることができ、圧力弁本体３ｂの自重及び圧力弁本体３ｂの貯水に触れる面積は変化することは無く、弁部材２本体に作用する圧力（水圧）は洗面ボウルＢの水位に比例するから、圧力弁３に使用する磁石の磁力強度を調整することで、希望する任意の水位に達した時に開口する圧力弁３とすることができる。
任意に設定した水位に由来する水圧に応じて開閉し、開口時には貯水を下水側に排出することから、本実施例の圧力弁３は、槽体内からの圧力が設定した値を超えたときに開口し、槽体内の水を下水側に排出する圧力弁３である。
また、目隠し部２ｅは、上記弁体２ａの上部に配置された、排水口本体１の鍔部１ｂ外周よりも大径な円盤状の部分であって、複数のリブによって貫通孔３ａを閉塞しないように弁体２ａの上方に隙間を設けて備えられてなり、その内部に圧力弁本体３ｂの磁石と引き合う磁石を配置してなる。
トラップ配管１２は、管体を略Ｓ字形状に屈曲させ、横転させたような形状の部材であって、上流側の端部は継手部材８の下端に、下流側の端部は床下配管に、それぞれ接続される。
また、施工完了時、排水機器である洗面台Ｓを使用し、トラップ配管１２内に排水が通過すると、トラップ配管１２の屈曲部分に排水が留まって満水状態となる部分が形成される。この満水状態の部分を封水部、溜まった排水を封水と呼び、トラップ配管１２の流路上が封水によって満水状態となることで、下流側となる下水側から、上流となる排水口１ａ側（屋内側）に臭気や害虫類が侵入することを防止する構造となっている。 The first embodiment of the present invention will be described below with reference to the drawings.
The drainage pipe using the drainage device according to the first embodiment of the present invention shown in FIGS. 1 to 8 includes a washbasin S, a drainage port main body 1, an intake valve member 4, a joint member 8, and a valve described below. It is composed of a member 2, a release wire 9 as an operation transmission member, a trap pipe 12, and an operation unit 11.
The wash basin S is composed of a wash basin B as a tank body and a cabinet C having a piping space inside on which the wash basin B is placed.
The wash bowl B will be described in detail. The wash bowl B is a box body having an open upper part, and has an attachment port B1 for attaching a drainage port main body 1 on the bottom surface and an operation unit 11 for attaching an operation portion 11 on the upper peripheral edge of the opening. Each has a mounting port B2.
The drainage port main body 1 is a substantially cylindrical member that forms a drainage flow path inside, and has a drainage port 1a at the upper end of the inner flow path and a flange portion 1b protruding outward to the upper edge. A male screw is provided on the lower side surface of the portion 1b.
Further, a plate nut member 1c provided with a female screw to be screwed with the male screw of the drain port main body 1 is provided.
The intake valve member 4 is a member whose upper end is connected to the lower end of the drain port main body 1 and whose lower end is connected to the upper end of the joint member 8, and as shown in FIG. 3, the intake valve upper portion 5 and the intake valve lower portion 6 are connected. It is composed of three members, the intake valve main body 7 and the intake valve main body 7.
The intake valve upper portion 5 is a member provided with a cover portion 5a that covers the valve seat portion 6a, which will be described later, on the peripheral edge of the linear tubular body.
The intake valve lower portion 6 includes a valve seat portion 6a having a plurality of openings along the peripheral edge in the outward direction from the upper edge of the linear tubular body. A ridge is provided on the upper surface of the peripheral edge of the opening of the valve seat portion 6a to prevent the valve seat portion 6a from sticking to the intake valve main body 7.
The intake valve main body 7 is a ring-shaped thin plate member made of an elastic material such as silicon rubber.
The intake valve member 4 composed of the above members is assembled as follows.
The intake valve main body 7 is arranged on the valve seat portion 6a of the intake valve lower portion 6 so that the valve seat portion 6a of the intake valve lower portion 6 and the ring-shaped portion of the intake valve main body 7 form concentric circles. Further, the lower end portion of the pipe body of the intake valve upper portion 5 is inserted so as to pass through the center of the intake valve main body 7, and the outer end portion of the cover portion 5a of the intake valve upper portion 5 and the valve seat of the intake valve member 4 are inserted. The assembly of the intake valve member 4 is completed by airtightly and watertightly connecting the outer peripheral edge of the portion 6a. This assembly is usually performed in a factory or the like, and is carried in as an intake valve member 4 at a construction site in a completed state. The intake valve member 4 is provided with a portion that functions as an intake valve such as a valve seat portion 6a around the peripheral edge of the pipe body, and the intake valve member 4 is connected to the piping from the pressure valve 3 as described later. In this embodiment, the members are arranged in an annular shape around the pipe from the pressure valve 3.
The joint member 8 is a pipe body formed in a substantially T shape, and is composed of a main body portion 8a extending vertically and a branch pipe portion 8b extending horizontally from the side surface thereof, and is a branch. The inside of the pipe portion 8b is configured so that the push-up piece 10b of the release wire 9, which will be described later, can move forward and backward while being rotatable in an appropriate direction without tilting.
The release wire 9 is an operation transmission member for transmitting the operation applied to the operation unit 11 to the valve member 2, and is a tubular outer having rigidity in the axial direction and flexibility in the side surface direction. The tube 9a, the inner wire 9b slidably operating in the outer tube 9a, the inner wire 9b having the rigidity in the axial direction and the flexibility in the side surface direction, and the drain port 1a side end of the inner wire 9b are provided. It is composed of a push-up mechanism 10 and a cap member 9c that closes the end of the branch pipe portion. The push-up mechanism 10 will be described in detail. The push-up mechanism 10 has a tubular body portion 10a that is connected to the end of the inner wire 9b and advances and retreats in the branch pipe portion 8b in accordance with the advance and retreat of the inner wire 9b, and the tubular body portion 10a. The push-up piece 10b is rotatably supported by the push-up piece 10b, and when the tubular body portion 10a retracts toward the operation portion 11 in the branch pipe portion 8b, a part of the push-up piece 10b is in the branch pipe portion 8b. As it is stowed, its tip portion rises near the center of the main body portion 8a of the joint member 8.
Further, when the tubular body portion 10a advances toward the main body portion 8a of the joint member 8 in the branch pipe portion 8b, the tip portion of the push-up piece 10b descends near the center of the main body portion 8a of the joint member 8.
The operation unit 11 is a member attached to the operation unit attachment port B2 of the washbasin B, has a cylindrical shape, is fixed to the operation unit attachment port B2, and is connected to the outer tube 9a end of the release wire 9. It is composed of an operation unit main body 11a and a knob portion 11b to which the inner wire 9b portion is connected while moving in and out of the operation unit main body 11a.
The valve member 2 is formed of a substantially disk shape, and has a valve body 2a that watertightly closes the drainage port 1a by covering the drainage port 1a, and a pressure valve 3 provided so as to penetrate the center of the valve body 2a. A rod-shaped valve shaft 2b hanging from the center position of the lower surface of the pressure valve 3 and a perforated plate arranged on the valve shaft 2b to guide the valve shaft 2b so as not to tilt when moving up and down in the drain port main body 1. It is composed of a member 2d and a blindfold portion 2e arranged on the upper surface of the valve body 2a.
The pressure valve 3 will be described in detail. The pressure valve 3 has a through hole 3a provided in the center of the valve body 2a, a pressure valve main body 3b that closes the through hole 3a from below, and a valve body from around the through hole 3a. It is composed of a plurality of support ribs 2c extending to the central position of 2a. The support ribs 2c are assembled near the lower center of the valve body 2a and connected to the valve shaft 2b. Further, the pressure valve main body 3b can be raised and lowered in the vertical direction, and is guided so as not to cause a positional shift in the horizontal direction. A magnet (not shown) as a magnetic material is provided inside the pressure valve main body 3b and the blindfold portion 2d so as to attract each other, and the pressure valve main body 3b is provided until a constant load is applied to the pressure valve main body 3b. Is configured to be pulled up by the magnetic force of the magnet of the blindfold portion 2d to close the through hole 3a, and when a load exceeding the value set by the magnetic force is applied, the through hole is separated from the peripheral edge of the through hole 3a. It forms a flow path for drainage that passes between 3a and the support rib 2c. The magnet of the pressure valve main body 3b is configured to stop at a position separated from the magnet of the blindfold valve 2d to some extent even when the through hole 3a is closed so as not to approach the magnet any further. Since the magnetic force of the magnet is inversely proportional to the square of the distance, if the structure is such that the magnets acting on the pressure valve 3 are close to each other until they come into close contact with each other, the attractive force due to the magnetic force is extremely increased, and at least the water pressure of the stored water in the wash bowl B is increased. It becomes a strength that is almost impossible to separate with such a method. Therefore, in the pressure valve 3 of the present embodiment, the magnets are sufficiently separated from each other, and the distance between the magnets is secured so that the strength of the magnets acts approximately in proportion to the distance.
Further, the load acting on the pressure valve main body 3b can be obtained from the own weight of the pressure valve main body 3b, the area of the pressure valve main body 3b in contact with the water storage, and the water pressure acting on the valve member 2, and the own weight of the pressure valve main body 3b and The area of the pressure valve body 3b that comes into contact with the water storage does not change, and the pressure (water pressure) acting on the valve member 2 body is proportional to the water level of the washbasin B, so the magnetic force strength of the magnet used for the pressure valve 3 is adjusted. By doing so, the pressure valve 3 can be made to open when the desired water level is reached.
Since the pressure valve 3 of this embodiment opens and closes according to the water pressure derived from the arbitrarily set water level and discharges the stored water to the sewage side at the time of opening, the pressure valve 3 of this embodiment is used when the pressure from the inside of the tank exceeds the set value. It is a pressure valve 3 that opens and discharges the water in the tank to the sewage side.
Further, the blindfold portion 2e is a disk-shaped portion having a diameter larger than the outer periphery of the flange portion 1b of the drainage port main body 1 arranged in the upper part of the valve body 2a, and does not block the through hole 3a by a plurality of ribs. As described above, a gap is provided above the valve body 2a, and a magnet attracting the magnet of the pressure valve main body 3b is arranged inside the gap.
The trap pipe 12 is a member having a shape in which the pipe body is bent into a substantially S shape and rolled over, and the upstream end is the lower end of the joint member 8 and the downstream end is the underfloor pipe. , Are connected respectively.
Further, when the construction is completed, the wash basin S, which is a drainage device, is used, and when the drainage passes through the trap pipe 12, the drainage stays at the bent portion of the trap pipe 12 to form a full water state. This full-filled part is called a water-sealing part, and the accumulated drainage is called a water-sealing part. It has a structure that prevents odors and pests from invading the side (indoor side).

上記のように構成した第一実施例の排水装置を採用した排水配管は、以下のようにして、槽体である洗面ボウルＢに施工される。尚、特に記載しない場合でも、接着剤やパッキングを用いたネジ接続などにより、必要に応じて各部材の接続箇所は水密的に接続される。
まず、排水口本体１を、洗面ボウルＢ底面に設けられた取付口Ｂ１に挿通し、鍔部１ｂの下面を、取付口Ｂ１の周縁上面に当接した状態とする。
次に、板ナット部材１ｃの雌ネジを、排水口本体１の雄ネジに螺合させ、取付口Ｂ１周縁をフランジ部下面と板ナット部材１ｃ上面部分とで挟持させて、洗面ボウルＢに固定する。
次に、排水口本体１の下端に、吸気弁部材４を接続する。
次に、操作部本体１１ａを、洗面ボウルＢの操作部取付口Ｂ２に固定する。
次に、レリースワイヤ９のインナーワイヤ９ｂの押上機構１０を有さない側の端部に、ツマミ部１１ｂを接続固定した上で、同じ側のアウターチューブ９ａ端部を操作部本体１１ａに接続する。
次に、レリースワイヤ９のインナーワイヤ９ｂ端部にある押上機構１０を継手部材８の枝管部８ｂ内に挿入し、更にアウターチューブ９ａ端部のキャップ部材９ｃにて枝管部８ｂ端部を閉塞する。これにより、継手部材８にレリースワイヤ９が接続される。
次に、吸気弁部材４の下端に継手部材８の上端を接続し、更に継手部材８の下端にトラップ配管１２を、トラップ配管１２の下端に下水側の配管に繋がる床下配管を接続する。
更に、排水口本体１に、上端の排水口１ａから弁部材２を挿通配置して、本実施例の洗面台Ｓの排水配管の施工が完了する。
上記排水配管は、弁部材２に圧力弁３が備えられて圧力弁３からの排水が排水口本体１内に排出されるように構成されたことで、圧力弁３からの配管が、排水口１ａからの配管に合流した配管である。また、排水口本体１の配管に、吸気弁部材４、トラップ配管１２の順に配管が行われていることから、圧力弁３からの配管に排水トラップが備えられると共に、吸気弁部材４が、排水トラップの上流に備えられてなる排水配管である。 The drainage pipe adopting the drainage device of the first embodiment configured as described above is installed in the wash bowl B which is a tank body as follows. Even if not specifically described, the connection points of the respective members are watertightly connected as necessary by screw connection using an adhesive or packing.
First, the drainage port main body 1 is inserted into the mounting port B1 provided on the bottom surface of the wash bowl B, and the lower surface of the flange portion 1b is brought into contact with the upper surface of the peripheral edge of the mounting port B1.
Next, the female screw of the plate nut member 1c is screwed into the male screw of the drain port main body 1, and the peripheral edge of the mounting port B1 is sandwiched between the lower surface of the flange portion and the upper surface portion of the plate nut member 1c and fixed to the wash bowl B. do.
Next, the intake valve member 4 is connected to the lower end of the drain port main body 1.
Next, the operation unit main body 11a is fixed to the operation unit attachment port B2 of the washbasin B.
Next, the knob portion 11b is connected and fixed to the end portion of the inner wire 9b of the release wire 9 on the side that does not have the push-up mechanism 10, and then the end portion of the outer tube 9a on the same side is connected to the operation portion main body 11a. ..
Next, the push-up mechanism 10 at the end of the inner wire 9b of the release wire 9 is inserted into the branch pipe portion 8b of the joint member 8, and the end of the branch pipe portion 8b is further inserted by the cap member 9c at the end of the outer tube 9a. Block. As a result, the release wire 9 is connected to the joint member 8.
Next, the upper end of the joint member 8 is connected to the lower end of the intake valve member 4, the trap pipe 12 is further connected to the lower end of the joint member 8, and the underfloor pipe connected to the sewer side pipe is connected to the lower end of the trap pipe 12.
Further, the valve member 2 is inserted and arranged in the drainage port main body 1 from the drainage port 1a at the upper end, and the construction of the drainage pipe of the wash basin S of this embodiment is completed.
The drainage pipe is configured such that the valve member 2 is provided with a pressure valve 3 so that the drainage from the pressure valve 3 is discharged into the drainage port main body 1, so that the pipe from the pressure valve 3 is a drainage port. It is a pipe that joins the pipe from 1a. Further, since the intake valve member 4 and the trap pipe 12 are connected in this order to the pipe of the drain port main body 1, the pipe from the pressure valve 3 is provided with a drain trap, and the intake valve member 4 drains. It is a drainage pipe installed upstream of the trap.

上記のように構成された本実施例の洗面台Ｓの排水配管において、操作部１１のツマミ部１１ｂに操作を加えて、図４に示したように、弁部材２が降下し、排水口１ａを閉塞した状態とする。この時、操作部１１のツマミ部１１ｂは降下しており、これにより、インナーワイヤ９ｂは弁部材２側に前進すると共に、操作部本体１１ａとツマミ部１１ｂの摩擦等によってインナーワイヤ９ｂの前進は維持されている。更に、昇降部材の押上片１０ｂについて、筒体部１０ａに回動自在に取り付けられている押上片１０ｂは、筒体部１０ａが本体部８ａ側に前進していることで、その先端は降下し、弁軸２ｂの下端からは離間している。
この状態から操作部１１のツマミ部１１ｂに操作を加えて、ツマミ部１１ｂを上昇させると、インナーワイヤ９ｂと、その先端にある押上機構１０は操作部１１側に後退し、図５に示したように、筒体部１０ａに回動自在に取り付けられている押上片１０ｂは、筒体部１０ａが操作部１１側に後退することで、その先端が上昇し、弁軸２ｂの下端を押し上げる。これにより、弁部材２が上昇し、排水口１ａから弁部材２の弁体２ａが離間して排水口１ａが開口する。この時、操作部本体１１ａとツマミ部１１ｂの摩擦等によってインナーワイヤ９ｂの後退は維持され、排水口１ａの開口状態も維持される。
また、この時に洗面ボウルＢ内に給水が行われるか、又は貯水が溜められた状態の場合、洗面ボウルＢ内の給水乃至貯水は、排水口１ａを通過して排水口本体１内に流入し、排水口本体１、吸気弁部材４、継手部材８、トラップ配管１２、を介して通過し、床下配管を介して下水側に排出される。また、トラップ配管１２内の屈曲部分内に排水が溜まることで、トラップ配管１２内の封水部に封水が溜まり、下水側からの臭気や害虫類の屋内側への侵入を防止すする。
この状態から操作部１１のツマミ部１１ｂに操作を加えて、ツマミ部１１ｂを降下させると、インナーワイヤ９ｂと、その先端にある昇降機構は再び弁部材２側に前進し、図４に示したように、押上片１０ｂの先端が降下して弁軸２ｂの下端からは離間し、排水口１ａを弁体２ａが閉口した状態に戻る。
以降、操作部１１のツマミ部１１ｂに操作を加えることで、排水口１ａを自在に開閉することができる。 In the drainage pipe of the wash basin S of the present embodiment configured as described above, an operation is applied to the knob portion 11b of the operation portion 11, and as shown in FIG. 4, the valve member 2 descends and the drainage port 1a. Is in a closed state. At this time, the knob portion 11b of the operation portion 11 is lowered, whereby the inner wire 9b advances to the valve member 2 side, and the inner wire 9b advances due to friction between the operation portion main body 11a and the knob portion 11b. It is maintained. Further, regarding the push-up piece 10b of the elevating member, the tip of the push-up piece 10b rotatably attached to the tubular body portion 10a is lowered because the tubular body portion 10a is advanced toward the main body portion 8a. , It is separated from the lower end of the valve shaft 2b.
When the knob portion 11b of the operation portion 11 is operated from this state to raise the knob portion 11b, the inner wire 9b and the push-up mechanism 10 at the tip thereof retract to the operation portion 11 side and are shown in FIG. As described above, the push-up piece 10b rotatably attached to the tubular body portion 10a has its tip raised as the tubular body portion 10a retracts toward the operation portion 11, and pushes up the lower end of the valve shaft 2b. As a result, the valve member 2 rises, the valve body 2a of the valve member 2 is separated from the drain port 1a, and the drain port 1a opens. At this time, the retreat of the inner wire 9b is maintained due to friction between the operation portion main body 11a and the knob portion 11b, and the open state of the drain port 1a is also maintained.
Further, at this time, when water is supplied to the wash bowl B or water is stored, the water supply or storage in the wash bowl B passes through the drain port 1a and flows into the drain port main body 1. It passes through the drain port main body 1, the intake valve member 4, the joint member 8, and the trap pipe 12, and is discharged to the sewage side via the underfloor pipe. Further, since the drainage is collected in the bent portion in the trap pipe 12, the sealed water is collected in the water-sealed portion in the trap pipe 12, and the odor from the sewage side and the invasion of pests into the indoor side are prevented.
From this state, when the knob portion 11b of the operation portion 11 is operated to lower the knob portion 11b, the inner wire 9b and the elevating mechanism at the tip thereof advance to the valve member 2 side again, as shown in FIG. As described above, the tip of the push-up piece 10b descends and separates from the lower end of the valve shaft 2b, and the drain port 1a returns to the state in which the valve body 2a is closed.
After that, the drain port 1a can be freely opened and closed by applying an operation to the knob portion 11b of the operation portion 11.

本実施例の排水装置において、図６に示した、排水口・圧力弁の貫通孔・吸気弁のいずれも閉口した状態の洗面ボウルＢ内に給水を行い、洗面ボウルＢ内に貯水を行うと、洗面ボウルＢ内の水位が上昇し、圧力弁本体３ｂの貯水に接している面に、貯水分の水圧が作用し、圧力弁本体３ｂに荷重が加えられる。洗面ボウルＢ内の水位が貯水水位に達すると、図７に示したように、圧力弁本体３ｂは圧力弁本体３ｂに加えられた荷重によって降下し、貫通孔３ａを開口する。これにより洗面ボウルＢ内の貯水が貫通孔３ａを通過して排水口本体１内に流入し、排水口本体１、吸気弁部材４、継手部材８、トラップ配管１２、を介して通過し、床下配管を介して下水側に排出される。貯水が排出されることで、洗面ボウルＢ内の水位が降下し、圧力弁３に作用する水圧と、水圧による荷重が減少する為、再び圧力弁本体３ｂが上昇して貫通孔３ａを閉口し、貯水が完全に排出されることを防止する。 In the drainage device of this embodiment, water is supplied to the washbasin B in a state where all of the drainage port, the through hole of the pressure valve, and the intake valve shown in FIG. 6 are closed, and water is stored in the washbasin B. The water level in the wash bowl B rises, the water pressure of the stored water acts on the surface of the pressure valve main body 3b in contact with the water storage, and a load is applied to the pressure valve main body 3b. When the water level in the wash bowl B reaches the stored water level, as shown in FIG. 7, the pressure valve main body 3b descends due to the load applied to the pressure valve main body 3b and opens the through hole 3a. As a result, the water stored in the wash bowl B passes through the through hole 3a and flows into the drainage port main body 1, passes through the drainage port main body 1, the intake valve member 4, the joint member 8, and the trap pipe 12, and passes under the floor. It is discharged to the sewage side through the pipe. When the stored water is discharged, the water level in the washbasin B drops, and the water pressure acting on the pressure valve 3 and the load due to the water pressure decrease, so the pressure valve body 3b rises again and closes the through hole 3a. , Prevents the water storage from being completely drained.

更に、上記貫通孔３ａからの排水時において、排水が大量にあると、貫通孔３ａから下流側の配管、具体的には、排水口本体１、吸気弁部材４、継手部材８、トラップ配管１２の内部が満水状態となり、サイホン現象を生じる場合がある。ここで、貫通孔３ａから下流側の配管内がサイホン現象により負圧を生じた場合、負圧の発生によって吸気弁本体７が上昇し、図８のように、弁座部６ａの開口から吸気弁部材４内に吸気が行われて負圧が解消される。結果、配管内の負圧等の影響を受けることなく、圧力弁本体３ｂに作用する荷重のみによって圧力弁３が開閉するようになり、サイホン現象の影響で貯水水位よりも水位が低くなるまで排水が行われる、という問題は生じない。 Further, when draining from the through hole 3a, if there is a large amount of drainage, the pipe on the downstream side from the through hole 3a, specifically, the drain port main body 1, the intake valve member 4, the joint member 8, and the trap pipe 12 The inside of the pipe may become full and a siphon phenomenon may occur. Here, when a negative pressure is generated in the pipe on the downstream side from the through hole 3a due to the siphon phenomenon, the intake valve main body 7 rises due to the generation of the negative pressure, and intake air is taken from the opening of the valve seat portion 6a as shown in FIG. Inhalation is performed in the valve member 4 to eliminate the negative pressure. As a result, the pressure valve 3 opens and closes only by the load acting on the pressure valve body 3b without being affected by the negative pressure in the pipe, and drains until the water level becomes lower than the water storage level due to the siphon phenomenon. Does not occur.

本発明の実施例は以上のようであるが、本発明は上記実施例に限定される物ではなく、主旨を変更しない範囲において自由に変更が可能である。
例えば、上記実施例では、槽体として洗面ボウルＢを用いているが、本発明は上記実施例に限定されるものでは無く、流し台や浴槽等、他の排水機器の槽体に用いても構わない。 Examples of the present invention are as described above, but the present invention is not limited to the above-mentioned examples, and can be freely changed without changing the gist.
For example, in the above embodiment, the wash bowl B is used as the tank body, but the present invention is not limited to the above embodiment and may be used for the tank body of other drainage equipment such as a sink and a bathtub. No.

また、上記実施例では、圧力弁３は弁部材２の弁体２ａに設けられ、排水口１ａからの配管に圧力弁３からの排水が流入するように構成されてなるが、本発明は上記実施例に限定されるものでは無く、圧力弁３のための流路を槽体の排水口１ａとは別に設けても構わない。また、槽体に排水口１ａと圧力弁３の開口を別途設けた上で合流させても構わない。 Further, in the above embodiment, the pressure valve 3 is provided in the valve body 2a of the valve member 2, and is configured so that the drainage from the pressure valve 3 flows into the pipe from the drain port 1a. The present invention is not limited to the embodiment, and the flow path for the pressure valve 3 may be provided separately from the drain port 1a of the tank body. Further, the drain port 1a and the pressure valve 3 may be separately provided in the tank body and then merged.

また、上記実施例では、磁石の引き合う力を利用して貫通孔３ａに圧力弁本体３ｂを押し当てるようにして圧力弁３を作動させていたが、本発明は上記実施例に限定されるものでは無く、磁力の反撥を利用したり、スプリング等の弾性体を利用するなど、貫通孔３ａに圧力弁本体３ｂを押し当てると共に、水位に由来する圧力に応じて貫通孔３ａを開口ように構成するものであれば、どの様な構成を採用しても構わない。 Further, in the above embodiment, the pressure valve 3 is operated by pressing the pressure valve main body 3b against the through hole 3a by utilizing the attractive force of the magnet, but the present invention is limited to the above embodiment. Instead, the pressure valve body 3b is pressed against the through hole 3a by using the repulsion of the magnetic force or by using an elastic body such as a spring, and the through hole 3a is configured to open according to the pressure derived from the water level. Any configuration may be adopted as long as it does.

１排水口本体１ａ排水口
１ｂ鍔部１ｃ板ナット部材
２弁部材２ａ弁体
２ｂ弁軸２ｃ支持リブ
２ｄ目皿部材２ｅ目隠し部
３圧力弁３ａ貫通孔
３ｂ圧力弁本体４吸気弁部材
５吸気弁上部５ａカバー部
６吸気弁下部６ａ弁座部
７吸気弁本体８継手部材
８ａ本体部８ｂ枝管部
９レリースワイヤ９ａアウターチューブ
９ｂインナーワイヤ９ｃキャップ部材
１０押上機構１０ａ筒体部
１０ｂ押上片１１操作部
１１ａ操作部本体１１ｂツマミ部
１２トラップ配管Ｓ洗面台
Ｂ洗面ボウルＢ１取付口
Ｂ２操作部取付口Ｃキャビネット 1 Drain port body 1a Drain port 1b Fitting part 1c Plate nut member 2 Valve member 2a Valve body 2b Valve shaft 2c Support rib 2d Dish plate member 2e Blind part 3 Pressure valve 3a Through hole 3b Pressure valve body 4 Intake valve member 5 Intake valve Upper part 5a Cover part 6 Intake valve lower part 6a Valve seat part 7 Intake valve body 8 Fitting member 8a Main body part 8b Branch pipe part 9 Release wire 9a Outer tube 9b Inner wire 9c Cap member 10 Push-up mechanism 10a Cylindrical part 10b Push-up piece 11 Operation Part 11a Operation part main body 11b Knob part 12 Trap piping S Wash basin B Wash basin B1 Mounting port B2 Operation part mounting port C Cabinet

Claims

With the tank body,
A drainage port provided in the tank body to drain water in the tank body,
A valve member that closes the drainage port and
A pressure valve that opens when the pressure from inside the tank exceeds the set value and discharges the water inside the tank to the sewage side.
It is installed in the pipe on the downstream side of the pressure valve to prevent the outflow of drainage from the inside of the pipe to the outside of the pipe, and when negative pressure is generated in the pipe, it takes in air from the outside of the pipe to the inside of the pipe. With an intake valve that relieves the negative pressure of
Consists of
With the drain trap is provided in the piping from the pressure valve, the intake valve, the drainage device according to claim Rukoto such provided upstream of the drain trap.

In the above drainage device
The drainage device according to claim 1, wherein the pipe from the pressure valve joins the pipe from the drain port.

In the above drainage device
The drainage device according to claim 1 or 2, wherein the pressure valve is provided in the valve member.

In the above drainage device
The drainage device according to any one of claims 1 to 3 , wherein the intake valve is arranged in an annular shape around a pipe from the pressure valve.

In the above drainage device
The drainage according to any one of claims 1 to 4 , wherein the operation of opening and closing the drain port of the valve member is performed by operating an operation unit provided at a position separated from the valve member. Device.