JP2002227267A - Vacuum drainage collection system in building - Google Patents
Vacuum drainage collection system in buildingInfo
- Publication number
- JP2002227267A JP2002227267A JP2001026012A JP2001026012A JP2002227267A JP 2002227267 A JP2002227267 A JP 2002227267A JP 2001026012 A JP2001026012 A JP 2001026012A JP 2001026012 A JP2001026012 A JP 2001026012A JP 2002227267 A JP2002227267 A JP 2002227267A
- Authority
- JP
- Japan
- Prior art keywords
- vacuum
- pipe
- valve
- building
- drain
- 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.)
- Granted
Links
Landscapes
- Sink And Installation For Waste Water (AREA)
- Pipeline Systems (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、各種建物内の排水
を、大気圧と真空との差圧を利用して搬送する建物内真
空排水収集システムに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an in-building vacuum drainage collection system for transporting wastewater in various buildings by utilizing a differential pressure between atmospheric pressure and vacuum.
【０００２】[0002]
【従来の技術】従来、集合住宅、事務所、ホテル、病
院、店舗、遊戯施設（テーマパーク、劇場等）等の各種
建物内の排水の収集は、重力と配管勾配による自然流下
方式で行なわれていた。即ち図４に示すように排水源で
あるトイレの便器８０や手洗い８１や厨房のシンク８３
などの排水管８０１，８１１，８３１を排水横枝管８５
に接続し、この排水横枝管８５を排水立て管８７に接続
し、その際排水横枝管８５内の排水が自然流下で排水立
て管８７に流れ込むように排水横枝管８５に所定の下り
傾斜を設けて構成している。しかしながら上記自然流下
方式では、以下のような設計、施工及び維持管理上の問
題点があった。2. Description of the Related Art Conventionally, collection of drainage in various buildings such as apartment houses, offices, hotels, hospitals, shops, amusement facilities (theme parks, theaters, etc.) is performed by gravity and a gravity flow system. I was That is, as shown in FIG. 4, a toilet 80, a hand-wash 81, and a kitchen sink 83, which are drain sources.
Drain pipes 801, 811, 831 to drain horizontal branch pipe 85.
The drain horizontal branch pipe 85 is connected to a drain stack 87. At this time, a predetermined downward flow is made to the drain horizontal branch pipe 85 so that the drainage in the drain horizontal branch 85 flows into the drain stack 87 under natural flow. It is configured with an inclination. However, the above-mentioned natural flow method has the following problems in design, construction, and maintenance.
【０００３】排水横枝管８５が勾配を必要とするた
め、排水横枝管８５が水道管やガス管、空調ダクト、各
種ケーブル等を途中で横断する必要が生じた場合には、
常に排水横枝管８５を下側にして回避する必要があり、
天井裏や床スラブ下の限られた配管スペースではその敷
設が困難であった。[0003] Since the drain horizontal branch pipe 85 requires a gradient, if the drain horizontal branch pipe 85 needs to cross water pipes, gas pipes, air conditioning ducts, various cables, and the like on the way,
It is always necessary to avoid the drain horizontal branch pipe 85 with the lower side,
Laying it was difficult in the limited piping space above the ceiling and below the floor slab.
【０００４】排水管が破損した場合には漏水し、他の
各種配管や空調ダクト、各種ケーブル等に悪影響を及ぼ
してしまう。[0004] If the drainage pipe is damaged, it leaks water and adversely affects other various pipes, air conditioning ducts, various cables, and the like.
【０００５】そして上記問題点を解決する排水収集シス
テムとして真空排水収集システムがあるが、このシステ
ムを用いた場合でも以下のような技術的問題点があっ
た。There is a vacuum drainage collection system as a drainage collection system that solves the above problems. However, even when this system is used, there are the following technical problems.
【０００６】排水の搬送効率を上げるために真空配管
も微小な勾配を必要とし、また勾配を設けない場合には
図５に示すように真空配管９０の途中に下に凸となる屈
曲部９１を設けてここで排水の逆流を防止する必要があ
るので、前記自然流下式ほどではないにしろ、他の各種
配管、空調ダクト、各種ケーブル等と共に限られた配管
スペース内に敷設することに限界があった。[0006] In order to increase the efficiency of drainage transfer, the vacuum pipe also needs to have a small gradient, and if no gradient is provided, a bent portion 91 that projects downward in the middle of the vacuum pipe 90 as shown in FIG. Since it is necessary to prevent the backflow of drainage here, there is a limit to laying it in a limited piping space together with other various pipes, air conditioning ducts, various cables, etc. there were.
【０００７】逆流防止のための勾配や屈曲部をなくす
ために真空配管中に逆止弁を設置する方法も考えられる
が、逆止弁の上流側に圧力損失が生ずる状況下では、上
流側に設置された真空弁の作動が不安定になる恐れがあ
った。[0007] A method of installing a check valve in a vacuum pipe to eliminate a gradient or a bent portion for preventing backflow is also conceivable. However, in a situation where pressure loss occurs on the upstream side of the check valve, the check valve may be installed on the upstream side. The operation of the installed vacuum valve could be unstable.
【０００８】[0008]
【発明が解決しようとする課題】本発明は上述の点に鑑
みてなされたものでありその目的は、建物内の各種配
管、ダクト、ケーブル等を容易に回避できる建物内真空
排水収集システムを提供することにある。SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and has as its object to provide a vacuum drainage collection system in a building which can easily avoid various pipes, ducts, cables and the like in the building. Is to do.
【０００９】また本発明の目的は、真空配管の勾配をな
くして水平に敷設した場合でも、排水の逆流を防止で
き、また真空弁も安定して動作させることができる建物
内真空排水収集システムを提供することにある。Another object of the present invention is to provide a vacuum drainage collection system in a building capable of preventing backflow of drainage and stably operating a vacuum valve even when the pipe is laid horizontally without a slope of a vacuum pipe. To provide.
【００１０】[0010]
【課題を解決するための手段】上記問題点を解決するた
め本発明は、建物内の各種設備の排水管に真空弁を取り
付け、真空弁の下流側の配管を真空配管として室内を這
い回した後に真空式集水タンクに接続し、前記真空弁を
開くことで各種設備で排水された水を真空式集水タンク
に吸引する建物内真空排水収集システムにおいて、前記
室内を這い回す真空配管の所定部分に排水逆流防止用の
逆止弁を取り付けたことを特徴とする。According to the present invention, a vacuum valve is attached to a drain pipe of various facilities in a building, and a pipe downstream of the vacuum valve is used as a vacuum pipe to crawl the room. In a vacuum drainage collection system in a building, which is later connected to a vacuum type water collection tank and suctions water drained by various facilities by opening the vacuum valve to the vacuum type water collection tank, a predetermined vacuum pipe for crawling around the room A check valve for preventing backflow of drainage is attached to the part.
【００１１】また本発明は、前記室内を這い回す真空配
管に、他の部材を回避する上越し部を設け、前記逆止弁
はこの上越し部の部分に取り付けたことを特徴とする。Further, the present invention is characterized in that an overhanging portion for avoiding other members is provided in the vacuum pipe which crawls in the room, and the check valve is attached to the overhanging portion.
【００１２】また本発明は、前記逆止弁の吐出側に真空
取出口を設け、この真空取出口から取り出した真空を真
空弁開閉用動力として真空弁に供給することを特徴とす
る。Further, the present invention is characterized in that a vacuum outlet is provided on the discharge side of the check valve, and the vacuum taken out from the vacuum outlet is supplied to the vacuum valve as power for opening and closing the vacuum valve.
【００１３】また本発明は、前記逆止弁としてフラップ
弁を使用したことを特徴とする。Further, the present invention is characterized in that a flap valve is used as the check valve.
【００１４】[0014]
【発明の実施の形態】以下、本発明の実施の形態を図面
を参照して詳細に説明する。図１は本発明にかかる建物
内真空排水収集システムの一実施形態を示す図である。
同図に示すようにこの建物内真空排水収集システムは、
排水源であるトイレの便器６０や手洗い６５や厨房のシ
ンク７０などの排水管６１，６６，７１にそれぞれ真空
弁ユニット１０−１，２，３を接続している。各真空弁
ユニット１０−１，２，３は、それぞれ汚水ます１１と
真空弁２０とを具備して構成されている。ここで汚水ま
す１１は排水源からの排水を自然流下で溜めるものであ
る。Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a diagram showing an embodiment of a vacuum drainage collection system in a building according to the present invention.
As shown in FIG.
Vacuum valve units 10-1, 2, and 3 are connected to drain pipes 61, 66, 71 such as a toilet 60, a hand wash 65, and a kitchen sink 70, which are drain sources. Each of the vacuum valve units 10-1, 2, and 3 includes a sewage tank 11 and a vacuum valve 20. Here, the sewage basin 11 is for collecting the drainage from the drainage source under natural flow.
【００１５】そして各真空弁２０の下流側に接続する配
管２１を真空配管として立ち上げて、室の天井裏に設置
した真空配管からなる排水横枝管２３に接続している。
排水横枝管２３は真空配管からなる排水立て管２５に接
続され、真空ステーションに設置する真空式集水タンク
３０に接続される。真空式集水タンク３０には、その内
部を真空にする真空ポンプＰ１と、集めた水を例えば公
共下水道や汚水処理設備などに搬送する排水ポンプＰ２
とが接続されている。A pipe 21 connected to the downstream side of each vacuum valve 20 is set up as a vacuum pipe, and is connected to a drain horizontal branch pipe 23 composed of a vacuum pipe installed behind the ceiling of the room.
The drain horizontal branch pipe 23 is connected to a drain stack 25 composed of a vacuum pipe, and is connected to a vacuum water collecting tank 30 installed in a vacuum station. The vacuum type water collecting tank 30 has a vacuum pump P1 for evacuating the inside thereof, and a drainage pump P2 for conveying collected water to, for example, a public sewer or a sewage treatment facility.
And are connected.
【００１６】そして配管２１の排水横枝管２３に接続す
る部分近傍には、それぞれ逆止弁３５が取り付けられ、
排水横枝管２３側から配管２１に排水が逆流しないよう
にしている。In the vicinity of the portion of the pipe 21 connected to the drain horizontal branch pipe 23, check valves 35 are attached, respectively.
Drainage is prevented from flowing back into the pipe 21 from the drain horizontal branch pipe 23 side.
【００１７】一方排水横枝管２３は、天井裏を略水平面
方向に這い回されており、天井裏にある給水管やガス管
等の配管４０や空調用等の各種のダクト４１や図示はし
ないが電気・電話・通信・警報・監視等のケーブル等の
他の部材を途中で横断する必要がある場合は、上越し部
２４を設けてこれら他の部材を回避してそのまま水平の
位置を維持し（元の高さに戻して水平にしても良い）、
同時にこれら上越し部２４の部分（リフトした部分）に
上越し部２４の部分の水が上流側に逆流するのを防止す
る逆止弁３７を取り付けている。図２は上越し部２４の
部分の要部拡大概略図である。同図に示すように本発明
においては、他の配管４０やダクト４１等の他の部材の
回避を容易にするために、上越しと水平敷設が可能な真
空配管を用い、逆止弁３７を設置することで逆流を防止
するように構成したのである。On the other hand, the drain horizontal branch pipe 23 is crawled around the ceiling in a substantially horizontal plane direction, and a pipe 40 such as a water supply pipe or a gas pipe behind the ceiling, various ducts 41 for air conditioning and the like are not shown. If it is necessary to traverse other members such as cables for electricity, telephone, communication, alarm, monitoring, etc. on the way, an overhanging section 24 is provided to avoid these other members and maintain the horizontal position as it is (You can return to the original height and level it)
At the same time, a check valve 37 for preventing the water in the overhanging portion 24 from flowing back to the upstream side is attached to the overhanging portion 24 (the lifted portion). FIG. 2 is an enlarged schematic view of a main portion of the overhanging portion 24. As shown in the figure, in the present invention, in order to easily avoid other members such as other pipes 40 and ducts 41, a vacuum pipe that can be laid over and horizontally is used, and a check valve 37 is provided. The installation was designed to prevent backflow.
【００１８】図３は逆止弁３５，３７の内部構造を示す
拡大断面図である。同図に示すように逆止弁３５，３７
は、管５０の内部に設けられるリング状の弁座５１と、
この弁座５１を軸５４を中心にフラップ状に開閉する弁
体５３と、弁体５３の吐出側（下流側）上部に設けられ
て真空弁作動用の真空を取り出すノズル状の真空取出口
５５とを具備して構成されている。図示のごとく逆止弁
３５，３７は部品点数が少なく構造が簡単なフラップ弁
を使用しているので、小型・軽量化が図れ、建物内の配
管設備に容易に適用できる。FIG. 3 is an enlarged sectional view showing the internal structure of the check valves 35 and 37. As shown in FIG.
A ring-shaped valve seat 51 provided inside the pipe 50;
A valve body 53 for opening and closing the valve seat 51 in a flap shape around a shaft 54, and a nozzle-shaped vacuum outlet 55 provided at an upper portion on the discharge side (downstream side) of the valve body 53 to take out vacuum for operating a vacuum valve. Are provided. As shown in the figure, the check valves 35 and 37 use a flap valve having a small number of parts and a simple structure. Therefore, the check valves 35 and 37 can be reduced in size and weight, and can be easily applied to piping facilities in a building.
【００１９】真空取出口５５は図１に示す配管５７によ
って真空弁２０に接続されており、これによって真空取
出口５５から取り出した真空を真空弁開閉用動力として
いる。これによって例え真空弁２０の直後に配管２１の
ようなリフトを設けている場合でも、逆止弁３５又は３
７の吐出側から真空弁２０作動用の真空を供給できるた
め、真空弁２０の常に安定した作動が図れる。なおこの
実施形態の場合、各真空弁２０への真空の供給を逆止弁
３５の真空取出口５５から行うようにしているので、逆
止弁３７の真空取出口５５は使用しない。この場合は逆
止弁３７の真空取出口５５を塞いでおけば良い。なお逆
に逆止弁３５の代りに逆止弁３７の真空取出口５５を使
用してもよいことは言うまでもない。The vacuum outlet 55 is connected to the vacuum valve 20 by a pipe 57 shown in FIG. 1, and the vacuum taken out from the vacuum outlet 55 is used as a power for opening and closing the vacuum valve. Accordingly, even if a lift such as the pipe 21 is provided immediately after the vacuum valve 20, the check valve 35 or 3
Since the vacuum for operating the vacuum valve 20 can be supplied from the discharge side of 7, the vacuum valve 20 can always operate stably. In this embodiment, the vacuum is supplied to each of the vacuum valves 20 from the vacuum outlet 55 of the check valve 35. Therefore, the vacuum outlet 55 of the check valve 37 is not used. In this case, the vacuum outlet 55 of the check valve 37 may be closed. It goes without saying that the vacuum outlet 55 of the check valve 37 may be used instead of the check valve 35.
【００２０】また必要に応じて前記他の部材４０，４１
を下越しによって回避しても良い。下越しの場合でも真
空式ではリフト（上り勾配の配管）を設置することが可
能なため、元の高さに容易に戻すことができ、従って排
水横枝管２３を一定の高さ範囲内で敷設することができ
る。If necessary, the other members 40, 41
May be avoided by going down. Even in the case of going down, a lift (uphill pipe) can be installed in the vacuum system, so that the original height can be easily returned. Therefore, the drain horizontal branch pipe 23 can be set within a certain height range. Can be laid.
【００２１】以上のように排水横枝管２３を略水平に敷
設し、また他の部材４０，４１を上越し及び／又は下越
しするように構成したので、天井裏でしかも多数の他の
部材が設置されていて限られた配管スペースしかない場
合でも、その敷設を容易に行うことができる。As described above, the drain horizontal branch pipe 23 is laid substantially horizontally, and the other members 40 and 41 are arranged so as to pass over and / or go down. Can be easily laid even if there is only a limited piping space where the is installed.
【００２２】そして例えば図１に示す何れかの汚水ます
１１に所定量の汚水が溜まると、真空弁２０が開いてそ
の汚水は配管２１から排水横枝管２３、排水立て管２５
を介して真空式集水タンク３０内に導入される。なお水
の逆流を生じる恐れのある部分には前述のようにそれぞ
れ逆止弁３５，３７を取り付けているので、例え排水横
枝管２３が水平に設置されていても汚水の逆流を防ぎな
がら効率的な搬送を行なうことができる。When a predetermined amount of sewage accumulates in any of the sewage tanks 11 shown in FIG. 1, for example, the vacuum valve 20 is opened and the sewage is discharged from the pipe 21 to the drain horizontal branch pipe 23 and the drain stack 25.
And is introduced into the vacuum type water collecting tank 30 through the water. In addition, since the check valves 35 and 37 are respectively attached to the portions where the backflow of water may occur as described above, even if the drain horizontal branch pipe 23 is installed horizontally, the backflow of the wastewater is prevented while preventing the backflow of the wastewater. Transport can be performed.
【００２３】以上本発明の実施形態を説明したが、本発
明は上記実施形態に限定されるものではなく、特許請求
の範囲、及び明細書と図面に記載された技術的思想の範
囲内において種々の変形が可能である。なお直接明細書
及び図面に記載がない何れの形状や構造や材質であって
も、本願発明の作用・効果を奏する以上、本願発明の技
術的思想の範囲内である。例えば上記実施形態では真空
弁ユニット１０−１，２，３から吸引された排水を天井
裏の配管スペースに導いたが、天井裏の代りに床スラブ
の下の配管スペースに導いても良い。即ちこの場合は床
スラブの下の配管スペースに排水横枝管２３等の真空配
管を設置する。Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications are possible within the scope of the claims and the technical idea described in the specification and the drawings. Is possible. Note that any shape, structure, or material not directly described in the specification and drawings is within the scope of the technical idea of the present invention as long as the effects and effects of the present invention are exhibited. For example, in the above embodiment, the drainage sucked from the vacuum valve units 10-1, 2, 3 is guided to the piping space above the ceiling, but may be guided to the piping space below the floor slab instead of the ceiling. That is, in this case, a vacuum pipe such as the drain horizontal branch pipe 23 is installed in a pipe space below the floor slab.
【００２４】[0024]
【発明の効果】以上詳細に説明したように本発明によれ
ば以下のような優れた効果を有する。 建物内の各種設備から出る排水の排水処理システム
を、真空弁と真空配管とを具備する真空排水収集システ
ムで構成し、また真空配管の所定部分に排水逆流防止用
の逆止弁を取り付けたので、真空配管の勾配のない水平
敷設と、他の部材の回避とが容易に行なえ、狭い配管ス
ペースにも真空配管を敷設することができ、このため建
設費の低減化も図れる。As described in detail above, the present invention has the following excellent effects. Since the wastewater treatment system for wastewater from various facilities in the building is composed of a vacuum drainage collection system equipped with a vacuum valve and vacuum piping, and a check valve for preventing drainage backflow is attached to a predetermined part of the vacuum piping. In addition, horizontal laying of the vacuum pipe without inclination and avoidance of other members can be easily performed, and the vacuum pipe can be laid in a narrow pipe space, so that the construction cost can be reduced.
【００２５】水平敷設した真空配管内での逆流がなく
なり、排水の搬送効率が上がるため、真空式集水タンク
に設置する真空ポンプの機器容量を小さくでき、また運
転時間を短くできるため経済的なシステムになる。Backflow in the horizontally laid vacuum pipes is eliminated, and the efficiency of drainage is increased, so that the equipment capacity of the vacuum pump installed in the vacuum type water collecting tank can be reduced, and the operating time can be shortened, which is economical. Become a system.
【００２６】逆止弁の吐出側に設けた真空取出口から
取り出した真空を真空弁開閉用動力として真空弁に供給
することとしたので、真空弁の作動が安定する。Since the vacuum taken out from the vacuum outlet provided on the discharge side of the check valve is supplied to the vacuum valve as the power for opening and closing the vacuum valve, the operation of the vacuum valve is stabilized.
【００２７】逆止弁としてフラップ弁を使用した場合
は構造が簡単なため従来の逆止弁に比べて小型・軽量化
が図れ、部品点数を減らすことができ、逆止弁の設置及
び維持管理が容易になる。When a flap valve is used as a check valve, its structure is simple, so that it can be made smaller and lighter than conventional check valves, the number of parts can be reduced, and installation and maintenance of the check valve Becomes easier.
【図１】本発明にかかる建物内真空排水収集システムの
一実施形態を示す図である。FIG. 1 is a view showing one embodiment of a vacuum drainage collection system in a building according to the present invention.
【図２】上越し部２４の部分の要部拡大概略図である。FIG. 2 is an enlarged schematic view of a main part of the overhanging section 24;
【図３】逆止弁３５，３７の内部構造を示す拡大断面図
である。FIG. 3 is an enlarged sectional view showing an internal structure of check valves 35 and 37.
【図４】従来の自然流下式の配管例を示す図である。FIG. 4 is a diagram showing an example of a conventional free-flowing pipe.
【図５】従来の逆流防止のための真空配管形状を示す図
である。FIG. 5 is a diagram showing a conventional vacuum pipe shape for preventing backflow.
１０−１，２，３ 真空弁ユニット １１ 汚水ます ２０ 真空弁 ２１ 配管（真空配管） ２３ 排水横枝管（真空配管） ２４ 上越し部 ２５ 排水立て管（真空配管） ３０ 真空式集水タンク Ｐ１ 真空ポンプ Ｐ２ 排水ポンプ ３５，３７ 逆止弁 ４０ 配管 ４１ ダクト ５０ 管 ５１ 弁座 ５３ 弁体 ５５ 真空取出口 ５７ 配管 ６０ 便器（各種設備） ６１ 排水管 ６５ 手洗い（各種設備） ６６ 排水管 ７０ シンク（各種設備） ７１ 排水管 10-1,2,3 Vacuum valve unit 11 Sewage tank 20 Vacuum valve 21 Pipe (vacuum pipe) 23 Drain horizontal branch pipe (vacuum pipe) 24 Overhead part 25 Drain stack pipe (vacuum pipe) 30 Vacuum type water collecting tank P1 Vacuum pump P2 Drainage pump 35, 37 Check valve 40 Piping 41 Duct 50 Pipe 51 Valve seat 53 Valve 55 Vacuum outlet 57 Piping 60 Toilet bowl (various facilities) 61 Drain pipe 65 Hand washing (various facilities) 66 Drain pipe 70 Sink ( Various equipment) 71 Drain pipe
Claims (4)
り付け、真空弁の下流側の配管を真空配管として室内を
這い回した後に真空式集水タンクに接続し、前記真空弁
を開くことで各種設備で排水された水を真空式集水タン
クに吸引する建物内真空排水収集システムにおいて、 前記室内を這い回す真空配管の所定部分に排水逆流防止
用の逆止弁を取り付けたことを特徴とする建物内真空排
水収集システム。1. A vacuum valve is attached to a drain pipe of various facilities in a building, a pipe downstream of the vacuum valve is evacuated as a vacuum pipe in a room, and then connected to a vacuum water collecting tank, and the vacuum valve is opened. In a vacuum drainage collection system in a building that sucks water drained by various facilities into a vacuum type water collection tank, a check valve for preventing drainage backflow is attached to a predetermined portion of a vacuum pipe that crawls around the room. Characterized by a vacuum drainage collection system in the building.
部材を回避する上越し部を設け、前記逆止弁はこの上越
し部の部分に取り付けたことを特徴とする請求項１記載
の建物内真空排水収集システム。2. The vacuum pipe which crawls in the room is provided with an overhaul section avoiding other members, and the check valve is attached to the overhaul section. Vacuum drainage collection system in a building.
け、この真空取出口から取り出した真空を真空弁開閉用
動力として真空弁に供給することを特徴とする請求項１
又は２記載の建物内真空排水収集システム。3. A vacuum outlet is provided on the discharge side of the check valve, and the vacuum taken out from the vacuum outlet is supplied to the vacuum valve as power for opening and closing the vacuum valve.
Or the vacuum drainage collection system in a building according to 2.
ことを特徴とする請求項１又は２又は３記載の建物内真
空排水収集システム。4. The system according to claim 1, wherein a flap valve is used as the check valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001026012A JP3751832B2 (en) | 2001-02-01 | 2001-02-01 | In-building vacuum drainage collection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001026012A JP3751832B2 (en) | 2001-02-01 | 2001-02-01 | In-building vacuum drainage collection system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2002227267A true JP2002227267A (en) | 2002-08-14 |
| JP3751832B2 JP3751832B2 (en) | 2006-03-01 |
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ID=18890907
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001026012A Expired - Lifetime JP3751832B2 (en) | 2001-02-01 | 2001-02-01 | In-building vacuum drainage collection system |
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| Country | Link |
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| JP (1) | JP3751832B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005098493A (en) * | 2003-08-28 | 2005-04-14 | Kitz Corp | Ball check valve and drainage control device using the same |
| WO2005056939A1 (en) * | 2003-12-10 | 2005-06-23 | Wada, Takeshi | Forced drainage apparatus |
| JP2021167771A (en) * | 2020-04-10 | 2021-10-21 | 丸一株式会社 | Water leakage inspecting method |
-
2001
- 2001-02-01 JP JP2001026012A patent/JP3751832B2/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005098493A (en) * | 2003-08-28 | 2005-04-14 | Kitz Corp | Ball check valve and drainage control device using the same |
| WO2005056939A1 (en) * | 2003-12-10 | 2005-06-23 | Wada, Takeshi | Forced drainage apparatus |
| JP2021167771A (en) * | 2020-04-10 | 2021-10-21 | 丸一株式会社 | Water leakage inspecting method |
| JP7462183B2 (en) | 2020-04-10 | 2024-04-05 | 丸一株式会社 | How to check for leaks |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3751832B2 (en) | 2006-03-01 |
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