JP3265809B2 - Sewage of vacuum sewer - Google Patents
Sewage of vacuum sewerInfo
- Publication number
- JP3265809B2 JP3265809B2 JP05906794A JP5906794A JP3265809B2 JP 3265809 B2 JP3265809 B2 JP 3265809B2 JP 05906794 A JP05906794 A JP 05906794A JP 5906794 A JP5906794 A JP 5906794A JP 3265809 B2 JP3265809 B2 JP 3265809B2
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- vacuum
- upstream
- vacuum sewer
- valve
- 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.)
- Expired - Fee Related
Links
Description
【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION
【０００１】[0001]
【産業上の利用分野】本発明は真空式下水道の伏越に係
り、特に、通気管内からドレンを容易に排出できるよう
にした真空式下水道の伏越に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shelter of a vacuum sewer, and more particularly, to a shelter of a vacuum sewer capable of easily discharging drain from a ventilation pipe.
【０００２】[0002]
【従来の技術及び先行技術】真空式下水道は、下水管内
を真空（完全な真空ではなく、減圧状態を指称する。）
にし、大気との圧力差を利用して汚水を収集するシステ
ムである。この真空式下水道システムにおいては、家庭
や工場等の衛生設備から排出される排水は、真空弁ユニ
ット（中継ユニット）から真空下水管を経て真空ステー
ションへ送られ、その後、下水処理施設へ送られる。2. Description of the Related Art In a vacuum sewer system, the inside of a sewer pipe is evacuated (not a complete vacuum but a reduced pressure state).
The system collects sewage using the pressure difference with the atmosphere. In this vacuum type sewage system, wastewater discharged from sanitary facilities such as homes and factories is sent from a vacuum valve unit (relay unit) to a vacuum station via a vacuum sewage pipe, and then to a sewage treatment facility.
【０００３】このような真空式下水道システムにおい
て、真空下水管路に登り勾配がある場合、その勾配にお
ける揚程は、真空ステーションで発生した真空度を消費
し、真空度の低下要因となり、搬送可能範囲を狭める原
因となる。[0003] In such a vacuum type sewer system, when there is an ascending gradient in the vacuum sewer pipe, the head at that gradient consumes the degree of vacuum generated in the vacuum station and causes a reduction in the degree of vacuum. Cause narrowing.
【０００４】そこで、汚水発生源から真空ステーション
までの真空下水管路に障害物が形成される場合におい
て、該障害物の揚程による真空度の低下を防止し、汚水
搬送可能範囲の拡大を図る伏越として、第２図に示す如
く、障害物（図では河川）１の一側に設けられた上流側
真空下水管２と、障害物（河川）１の他側に設けられた
下流側真空下水管３とを接続する真空式下水道の伏越で
あって、前記障害物１の下側をくぐり前記上流側真空下
水管２と下流側真空下水管３とを接続する通水管４と、
前記障害物１の上側を跨ぎ前記上流側真空下水管２と下
流側真空下水管３とを接続する通気管５とを備えてなる
真空式下水道の伏越が提案された（例えば、特開平４−
２５８４２４号、特開平５−１５６６９２〜１５６６９
５号公報）。[0004] Therefore, when an obstacle is formed in the vacuum sewer line from the sewage generation source to the vacuum station, a reduction in the degree of vacuum due to the lift of the obstacle is prevented, and the range in which the sewage can be conveyed is expanded. As shown in FIG. 2, as shown in FIG. 2, an upstream vacuum sewer pipe 2 provided on one side of an obstacle (river in the figure) 1 and a downstream vacuum drain provided on the other side of the obstacle (river) 1 A water drain pipe 4 for connecting the upstream vacuum drain pipe 2 and the downstream vacuum drain pipe 3 under the obstacle 1,
There has been proposed a shelter of a vacuum type sewer comprising a ventilation pipe 5 which straddles the upper side of the obstacle 1 and connects the upstream vacuum sewer pipe 2 and the downstream vacuum sewer pipe 3 (for example, Japanese Unexamined Patent Publication No. −
No. 258424, JP-A-5-15669-15669
No. 5).
【０００５】なお、第２図において、６は通気管５に設
けられた弁であり、１０は上流側真空下水管２から立ち
上げられた大気連通管であり、この大気連通管１０には
弁９が設けられている。また、１１は気液分離器であ
り、上流側真空下水管２から通気管５に水が流入するこ
とを防いでいる。通気管５はこの気液分離器１１の上部
に接続されている。In FIG. 2, reference numeral 6 denotes a valve provided in the ventilation pipe 5, reference numeral 10 denotes an air communication pipe which is set up from the upstream vacuum sewer pipe 2, and the air communication pipe 10 has a valve. 9 are provided. Reference numeral 11 denotes a gas-liquid separator, which prevents water from flowing from the upstream vacuum sewer pipe 2 to the ventilation pipe 5. The ventilation pipe 5 is connected to the upper part of the gas-liquid separator 11.
【０００６】このように構成された第２図の真空式下水
道の伏越において、通常時にあっては弁６は開弁され、
弁９は閉弁されている。そして上流側真空下水管２内を
流れてきた汚水は、通水管４を水頭ＨＡに従って自然流
下する如くしてくぐり抜けて下流側真空下水管３に達
し、該下流側真空下水管３内をさらに下流に向って流れ
る。一方、下流側真空下水管３内の真空は通気管５を経
て上流側真空下水管２に伝達され、これによって上流側
真空下水管２に設けられている揚程（図示略）において
エアリフト作用が行なわれる。[0006] In the overrun of the vacuum sewer of FIG. 2 constructed as described above, the valve 6 is normally opened,
Valve 9 is closed. Then, the sewage flowing in the upstream vacuum sewer pipe 2 passes through the water pipe 4 so as to flow naturally according to the head HA , reaches the downstream vacuum sewer pipe 3, and further flows through the downstream vacuum sewer pipe 3. It flows downstream. On the other hand, the vacuum in the downstream-side vacuum sewer pipe 3 is transmitted to the upstream-side vacuum sewer pipe 2 via the ventilation pipe 5, whereby an air lift action is performed in a lift (not shown) provided in the upstream-side vacuum sewer pipe 2. It is.
【０００７】このような真空式下水道の伏越であれば、
下流側真空下水管３と上流側真空下水管２とを連通する
通気管５により、真空ステーションで発生した負圧を常
時、真空下水管内に伝えているので、真空ステーション
で発生した負圧が、この障害物をくぐる際の真空下水管
における揚水のためには消費されず、この負圧が他箇所
での揚程に有効に利用される。If such a vacuum sewer is prone,
Since the negative pressure generated in the vacuum station is always transmitted to the inside of the vacuum sewer pipe by the ventilation pipe 5 communicating the downstream vacuum sewer pipe 3 and the upstream vacuum sewer pipe 2, the negative pressure generated in the vacuum station is It is not consumed for pumping water in the vacuum sewer when passing through the obstacle, and this negative pressure is effectively used for lifting at other locations.
【０００８】なお、汚水の通水と共に通水管４に堆積物
がたまった場合には、この堆積物を次のようにして排出
する。即ち、流下水量の少ない夜間や休業日などにまず
弁６を閉じ、次いで上流側真空下水管２側の弁９を開け
る等して上流側真空下水管２内にエアを吸入させると共
に、下流側真空下水管３内を真空ステーションにより減
圧する。そうすると、通水管４内がエアブローされ、堆
積物が下流側真空下水管３へ排出されるが、その際、エ
アリフト効果により、通水管４内の堆積物が効率的に下
流側真空下水管３側へ押し流されて排出される。[0008] When sediment accumulates in the water pipe 4 together with the flow of sewage, the sediment is discharged as follows. That is, the valve 6 is first closed at night or on holidays when the amount of flowing water is small, and then the valve 9 on the upstream vacuum sewer pipe 2 is opened so that air is sucked into the upstream vacuum sewer pipe 2 and the downstream side. The pressure inside the vacuum sewer pipe 3 is reduced by a vacuum station. Then, the inside of the water pipe 4 is blown by air, and the sediment is discharged to the downstream vacuum sewer pipe 3. At this time, the sediment in the water pipe 4 is efficiently discharged to the downstream vacuum sewer pipe 3 by the air lift effect. It is washed away and discharged.
【０００９】[0009]
【発明が解決しようとする課題】上記公知の真空式下水
道の伏越においては、通水管のブローアウトを行なうに
当り弁６を閉、弁９を開としたときに、上流側真空下水
管２側へも大気が流入するのであるが、この際、この大
気流入により、上流側真空下水管２内にあっては、該大
気連通管１０の接続部付近に比べてそれよりも上流の方
が負圧の強い状態となり、上流側真空下水管２内におい
て汚水の逆流現象が生じる。In the above-mentioned known vacuum sewer system, when the valve 6 is closed and the valve 9 is opened to blow out the water pipe, the upstream vacuum sewer pipe 2 is opened. Although the atmosphere also to the side is to flow, this time, the large
Due to the inflow of air , the large
As compared with the vicinity of the connection portion of the air communication pipe 10 , the upstream side is in a state of a higher negative pressure, and a backflow phenomenon of sewage occurs in the upstream vacuum sewer pipe 2.
【００１０】本発明は上記従来の問題点を解決し、通水
管のブローアウト操作時における上流側真空下水管内の
汚水の逆流が防止される真空式下水道の伏越を提供する
ことを目的とする。SUMMARY OF THE INVENTION The present invention solves the above-mentioned conventional problems, and solves the above-mentioned problems.
It is an object of the present invention to provide a vacuum sewer shelter in which backflow of sewage is prevented.
【００１１】[0011]
【課題を解決するための手段】請求項１の真空式下水道
の伏越は、障害物の一側に設けられた上流側真空下水管
と、障害物の他側に設けられた下流側真空下水管とを接
続する真空式下水道の伏越であって、前記障害物の下側
をくぐり前記上流側真空下水管と下流側真空下水管とを
接続する通水管と、前記下流側真空下水管と上流側真空
下水管とを連通しており、該下流側真空下水管の負圧を
上流側真空下水管に伝達するための通気管と、該通気管
を遮蔽するための弁と、該通水管内に大気を上流側真空
下水管側から流入させて通水管をブローアウトさせるた
めの大気流入用の弁と、を備えてなる真空式下水道の伏
越において、該大気流入用の弁を介して大気が流入する
際の該上流側真空下水管内における逆流を阻止する逆流
阻止弁を設けたことを特徴とする。According to the first aspect of the present invention, the overhang of the vacuum sewer system includes an upstream vacuum sewer pipe provided on one side of the obstacle and a downstream vacuum sewer pipe provided on the other side of the obstacle. A water pipe connecting the water pipe and a water pipe connecting the upstream vacuum drain pipe and the downstream vacuum drain pipe, passing under the obstacle, and the downstream vacuum drain pipe; It communicates the upstream vacuum sewer pipe, and vent pipe for communicating the negative pressure in the downstream side vacuum sewer pipe upstream vacuum sewer pipe, vent pipe
A valve for shielding air and an upstream vacuum in the water pipe.
Inflow from the sewer pipe side to blow out the water pipe
Atmospheric flow through the air inflow valve in a shelter of a vacuum sewer comprising:
To prevent backflow in the upstream vacuum drain at the time of
A blocking valve is provided.
【００１２】請求項２の真空式下水道の伏越は、請求項
１において、上流側真空下水管に大気連通管が接続さ
れ、該大気連通管に前記大気流入用の弁が設けられてお
り、前記上流側真空下水管の該大気連通管の接続部分よ
りも上流側に前記逆流阻止弁が設けられていることを特
徴とする。 [0012] In the second aspect of the present invention, the overturning of the vacuum type sewer is described in the claim.
At 1, the air communication pipe is connected to the upstream vacuum sewer pipe.
The air communication pipe is provided with the air inflow valve.
From the connection portion of the upstream-side vacuum sewer pipe to the atmosphere communication pipe.
That the check valve is provided upstream of
Sign.
【００１３】請求項３の真空式下水道の伏越は、請求項
１において、上流側真空下水管と通水管とが気液分離器
を介して連通され、該気液分離器に前記通気管が接続さ
れ、該気液分離器に前記大気流入用の弁が設けられ、該
気液分離器と上流側真空下水管との接続部に前記逆流・
阻止弁が設けられていることを特徴とする。 [0013] In the third aspect of the present invention, the overturning of the vacuum type sewer is described in the claim.
In 1, the upstream vacuum sewer pipe and the water pipe are separated by a gas-liquid separator.
The gas pipe is connected to the gas-liquid separator.
The gas-liquid separator is provided with the valve for air inflow,
At the connection between the gas-liquid separator and the upstream vacuum sewer,
A blocking valve is provided.
【００１４】[0014]
【作用】本発明の真空式下水道の伏越においては、ブロ
ーアウト操作時に大気が流入し ても、上流側真空下水管
における逆流が逆流阻止弁によって阻止される。In FukuEtsu of the vacuum sewer system of the present invention, Bro
Even air flows during Auto operation, backflow in the upstream vacuum sewer pipe is prevented by the backflow preventing valve.
【００１５】[0015]
【実施例】以下に図面を参照して本発明の実施例につい
てより具体的に説明する。第１図は本発明の真空式下水
道の伏越の一実施例を示す断面図である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The embodiments of the present invention will be described below more specifically with reference to the drawings. FIG. 1 is a cross-sectional view showing one embodiment of a shelter of a vacuum sewer of the present invention.
【００１６】本実施例では、上流側真空下水管２に、下
流側へ向う流水のみを許容する逆止弁８が設けられてい
る。図示の通り、該逆止弁８は、大気連通管１０の接続
部よりも上流側に設けられている。その他の構成は第２
図と同一である。In this embodiment, a check valve 8 is provided in the upstream vacuum sewer pipe 2 to allow only flowing water toward the downstream side. As shown, the check valve 8 is connected to the atmosphere communication pipe 10.
It is provided upstream of the section. Other configurations are second
It is the same as the figure.
【００１７】このように構成された真空式下水道の伏越
において、第１図の通り、通常時にあっては、弁６は開
弁され、弁９は閉弁されている。上流側真空下水管２内
を流れてきた汚水Ｗは、通水管４を自然流下する如くし
てくぐり抜け下流側真空下水管３に達し、該下流側真空
下水管３内をさらに下流に向って流れる。下流側真空下
水管３内の真空は通気管５を経て上流側真空下水管２に
伝達され、これによって上流側真空下水管２に設けられ
ている揚程（図示略）においてエアリフト作用が行なわ
れる。As shown in FIG. 1, the valve 6 is normally opened when the vacuum sewer system configured as described above is closed.
Valve 9 is closed . The sewage W flowing in the upstream vacuum sewer pipe 2 passes through the water pipe 4 so as to flow naturally, reaches the downstream vacuum sewer pipe 3, and flows further downstream in the downstream vacuum sewer pipe 3. . The vacuum in the downstream-side vacuum sewer pipe 3 is transmitted to the upstream-side vacuum sewer pipe 2 via the ventilation pipe 5, whereby an air lift operation is performed in a head (not shown) provided in the upstream-side vacuum sewer pipe 2.
【００１８】弁６を閉、弁９を開とすると、上流側真空
下水管２内が大気に連通すると共に、下流側真空下水管
３内の負圧がすべて通水管４にかかるため、通水管４内
の水は下流側真空下水管３へ吸い出され、これにより通
水管４のブローアウトが行なわれる。When the valve 6 is closed and the valve 9 is opened, the inside of the upstream vacuum sewer pipe 2 communicates with the atmosphere and all the negative pressure in the downstream vacuum sewer pipe 3 is applied to the water pipe 4. The water in the pipe 4 is sucked out to the downstream vacuum sewer pipe 3, whereby the water pipe 4 is blown out.
【００１９】このブローアウト時においても、逆止弁８
により、該逆止弁１２よりも上流側の上流側真空下水管
２内における汚水の逆流が防止される。At the time of this blowout, the check valve 8
The upstream vacuum sewer pipe upstream of the check valve 12
Backflow of sewage in 2 is prevented.
【００２０】第３図は本発明の別の実施例に係る真空式
下水道の伏越の要部（気液分離器部分）の構成を示す断
面図である。FIG. 3 is a sectional view showing the structure of a main part (gas-liquid separator portion) of a shelter of a vacuum sewer according to another embodiment of the present invention.
【００２１】本実施例においても、河川１の一方の側に
上流側真空下水管２が配設され、他方の側に下流側真空
下水管３が配設され、これらが通水管４及び通気管５を
介して接続されている。上流側真空下水管２と通水管４
とは気液分離器１２を介して接続されており、この気液
分離器１２はマンホール１３内に設置されている。Also in this embodiment, an upstream vacuum sewer pipe 2 is provided on one side of the river 1 and a downstream vacuum sewer pipe 3 is provided on the other side of the river 1. 5 are connected. Upstream vacuum sewer pipe 2 and water pipe 4
Is connected via a gas-liquid separator 12, and the gas-liquid separator 12 is installed in a manhole 13.
【００２２】この気液分離器１２は、下方が窄まった形
状の略円筒形のドラム１４と、このドラム１４の側周面
に設けられた流入口１５と、下端に設けられた流出口１
６と、上部に設けられた筒状部１７等を備えて構成され
ている。流入口１５には仕切弁１８を介して前記上流側
真空下水管２が接続され、流出口１６にはフランジ１９
を介して通水管４が接続されている。１８ａは仕切弁１
８のハンドルである。The gas-liquid separator 12 includes a substantially cylindrical drum 14 having a constricted lower portion, an inlet 15 provided on the side peripheral surface of the drum 14, and an outlet 1 provided at the lower end.
6 and a cylindrical portion 17 provided on the upper portion. The upstream side vacuum sewer pipe 2 is connected to the inflow port 15 through a gate valve 18, and the outflow port 16 is connected to a flange 19.
The water pipe 4 is connected via the. 18a is a gate valve 1
8 is the handle.
【００２３】このドラム１４の側周面を貫通するように
してダクト２０が設置されており、該ダクト２０にフラ
ンジ２１を介して通気管５が接続されている。A duct 20 is provided so as to penetrate the side peripheral surface of the drum 14, and the ventilation pipe 5 is connected to the duct 20 via a flange 21.
【００２４】前記筒状部１７には、シャフト２２の外周
面の雄螺子が螺合した雌螺子孔２３が設けられており、
シャフト２２が上下方向に螺進可能に設けられている。
このシャフト２２の下端には弁体２４が設けられてお
り、前記ダクト２０の上端の弁座２５と筒状部１７の下
端の弁座２６に対しこの弁体２４が着座可能とされてい
る。シャフト２２の上端にはハンドル２７が設けられて
いる。筒状部１７の側周面には通気口２８が設けられて
いる。The cylindrical portion 17 is provided with a female screw hole 23 into which a male screw on the outer peripheral surface of the shaft 22 is screwed.
The shaft 22 is provided so as to be able to advance vertically.
A valve body 24 is provided at a lower end of the shaft 22, and the valve body 24 can be seated on a valve seat 25 at an upper end of the duct 20 and a valve seat 26 at a lower end of the tubular portion 17. A handle 27 is provided at an upper end of the shaft 22. A ventilation port 28 is provided on the side peripheral surface of the cylindrical portion 17.
【００２５】このマンホール１３には蓋２９が被せられ
ている。この蓋２９には通気筒３０が立設され、この通
気筒３０には通気口３１が開口されている。The manhole 13 is covered with a lid 29. A ventilation tube 30 is provided upright on the lid 29, and a ventilation port 31 is opened in the ventilation tube 30.
【００２６】このように構成された真空式下水道の伏越
において、仕切弁１８を開弁しておくと共に、弁体２４
を上側の弁座２６に着座させておくと、従来の伏越と同
様に、上流側真空下水管２を流れてきた水は、気液分離
器１２において気液分離され、水が通水管４を介して下
流側真空下水管３に送られる。また、下流側真空下水管
３内の真空圧は、通気管５を介して上流側真空下水管２
に伝達される。When the vacuum sewer system configured as described above is closed, the gate valve 18 is opened and the valve element 24 is opened.
Is seated on the upper valve seat 26, the water flowing through the upstream vacuum sewer pipe 2 is gas-liquid separated in the gas-liquid separator 12, and the water is passed through the water pipe And is sent to the downstream vacuum sewer pipe 3 via. In addition, the vacuum pressure in the downstream vacuum sewer pipe 3 is supplied through the ventilation pipe 5 to the upstream vacuum sewer pipe 2.
Is transmitted to
【００２７】通水管４をブローアウトするときには、仕
切弁１８を閉弁すると共に、第３図に示す如く、弁体２
４を下側の弁座２５に着座させる。そうすると、気液分
離器１２と上流側真空下水管２とが遮断され、且つ通気
管５が遮閉された状態となる。また、気液分離器１２内
は、通気口２８，３１を介して大気に連通した状態とな
る。これにより、気液分離器１２内に大気が流入し、通
水管４内の水は下流側真空下水管３内の真空圧によって
吸引され、下流側真空下水管３内に吸い出され、ブロー
アウトが行なわれる。ブローアウト終了後は、再び弁体
２４を上側の弁座２６に着座させるようにハンドル２７
を回すと共に、仕切弁１８を開く。When the water pipe 4 is blown out, the gate valve 18 is closed and, as shown in FIG.
4 is seated on the lower valve seat 25. Then, the gas-liquid separator 12 and the upstream vacuum sewer pipe 2 are shut off, and the vent pipe 5 is shut off. Further, the inside of the gas-liquid separator 12 is in a state of communicating with the atmosphere via the vents 28 and 31. As a result, the atmosphere flows into the gas-liquid separator 12, the water in the water pipe 4 is sucked by the vacuum pressure in the downstream vacuum sewer pipe 3, sucked into the downstream vacuum sewer pipe 3, and blow-out. Is performed. After the blowout is completed, the handle 27 is set so that the valve body 24 is again seated on the upper valve seat 26.
Is turned, and the gate valve 18 is opened.
【００２８】この第３図の伏越においては、通気管５を
遮断する機構や、仕切弁１８あるいは上流側真空下水管
２を大気に連通させる機構がすべて気液分離器１２に一
体に設けられており、ハンドル１８ａ及び２７を操作す
るだけで通常の下水収集作動状態と、ブローアウト作動
とを行なわせることができる。また、これらの流路切替
用の機構が気液分離器１２と共にひとまとめにされてマ
ンホール１３内に設置されており、設置作業が容易であ
る。加えて、このマンホール１３が蓋２９で覆われ、気
液分離器１２やそれに付属する機構が悪戯を受けるおそ
れがまったくない。3, the mechanism for shutting off the ventilation pipe 5 and the mechanism for communicating the gate valve 18 or the upstream vacuum drain 2 with the atmosphere are all provided integrally with the gas-liquid separator 12. By simply operating the handles 18a and 27, the normal sewage collection operation state and the blowout operation can be performed. In addition, these mechanisms for switching the flow paths are collectively installed together with the gas-liquid separator 12 and installed in the manhole 13, so that the installation work is easy. In addition, the manhole 13 is covered with the lid 29, and there is no possibility that the gas-liquid separator 12 and the mechanism attached thereto will be mischief.
【００２９】上記実施例では、ハンドル１８ａ，２７を
回して仕切弁１８の開閉及び弁体２４の上下を行なうよ
うにしているが、本発明ではこれらを電動式あるいは真
空駆動式とし、遠隔操作するようにしても良い。In the above embodiment, the handles 18a and 27 are turned to open and close the gate valve 18 and move the valve body 24 up and down. In the present invention, these are electrically operated or vacuum-operated and are remotely operated. You may do it.
【００３０】上記実施例では、通気管５は障害物（河川
１）の上側に配設されているが、障害物の下側に配設し
ても良い。In the above embodiment, the ventilation pipe 5 is provided above the obstacle (the river 1), but may be provided below the obstacle.
【００３１】[0031]
【発明の効果】以上詳述した通り、本発明の真空式下水
道の伏越は、通水管のブローアウト時における上流側真
空下水管内の汚水の逆流が確実に防止される。また、こ
のため、ブローアウト終了後、真空下水道を早期に定常
運転状態に復帰させることができる。As described above in detail, the overflow of the vacuum sewer of the present invention reliably prevents the backflow of the wastewater in the upstream vacuum sewer at the time of blowout of the water pipe. Therefore, the vacuum sewer can be returned to the steady operation state early after the blowout is completed.
【図１】本発明の真空式下水道の伏越の一実施例を示す
断面図である。FIG. 1 is a cross-sectional view showing one embodiment of a shelter of a vacuum sewer according to the present invention.
【図２】従来の真空式下水道の伏越を示す断面図であ
る。FIG. 2 is a cross-sectional view showing the sheltering of a conventional vacuum sewer.
【図３】別の実施例に係る伏越の要部を示す断面図であ
る。FIG. 3 is a cross-sectional view illustrating a main part of a shoveling according to another embodiment.
１ 河川 ２ 上流側真空下水管 ３ 下流側真空下水管 ４ 通水管 ５ 通気管 ８ 逆止弁 １１，１２ 気液分離器 １ ８ 仕切弁 DESCRIPTION OF SYMBOLS 1 River 2 Upstream vacuum sewer pipe 3 Downstream vacuum sewer pipe 4 Water pipe 5 Ventilation pipe 8 Check valve 11, 12 Gas-liquid separationvessel 1 8 Gate valve
───────────────────────────────────────────────────── フロントページの続き (72)発明者 下舞 寿郎 東京都世田谷区深沢１−32−３−201 (72)発明者 山中 潤一 愛知県常滑市鯉江本町５丁目１番地 株 式会社イナックス内 (72)発明者 大串 和弘 東京都江東区豊洲二丁目１番１号 石川 島播磨重工業株式会社内 (72)発明者 村木 良民 大阪府高槻市宮田町１−１−８ 株式会 社酉島製作所内 (56)参考文献 特開 平４−258424（ＪＰ，Ａ) 特開 平５−280086（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) E03F 3/02 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Toshiro Shimomai 1-32-3-201 Fukasawa, Setagaya-ku, Tokyo (72) Inventor Junichi Yamanaka 5-1-1 Koiehonmachi, Tokoname-shi, Aichi Prefecture Inax Corporation (72) Inventor Kazuhiro Ogushi 2-1-1, Toyosu, Koto-ku, Tokyo Ishikawa-jima-Harima Heavy Industries, Ltd. (72) Inventor Yoshinori Muraki 1-1-8 Miyatacho, Takatsuki-shi, Osaka, Japan Torishima Manufacturing Co., Ltd. 56) References JP-A-4-258424 (JP, A) JP-A-5-280086 (JP, A) (58) Fields investigated (Int. Cl. 7 , DB name) E03F 3/02
Claims (3)
水管と、障害物の他側に設けられた下流側真空下水管と
を接続する真空式下水道の伏越であって、 前記障害物の下側をくぐり前記上流側真空下水管と下流
側真空下水管とを接続する通水管と、 前記下流側真空下水管と上流側真空下水管とを連通して
おり、該下流側真空下水管の負圧を上流側真空下水管に
伝達するための通気管と、該通気管を遮閉するための弁と、 該通水管内に大気を上流側真空下水管側から流入させて
通水管をブローアウトさせるための大気流入用の弁と、 を備えてなる真空式下水道の伏越において、該大気流入用の弁を介して大気が流入する際の 該上流側
真空下水管内における逆流を阻止する逆流阻止弁を設け
たことを特徴とする真空式下水道の伏越。An under vacuum provided on one side of an obstacle
A water pipe, and a downstream vacuum drain provided on the other side of the obstacle.
Connecting a vacuum sewer under the obstruction and passing the upstream vacuum sewer and downstream
A drain pipe for connecting the downstream vacuum drain pipe, and the downstream vacuum drain pipe and the upstream vacuum drain pipe.
The negative pressure of the downstream vacuum sewer pipe to the upstream vacuum sewer pipe.
A vent tube for communication,A valve for closing the vent pipe; The atmosphere is allowed to flow into the water pipe from the upstream vacuum drain pipe side.
A valve for air inflow to blow out the water pipe, In the procrastination of the vacuum sewer withWhen the air flows in through the air inflow valve Upstream
Prevent backflow in vacuum drainsBackflow preventionProvide a valve
It is characterized by a vacuum sewer system.
管に大気連通管が接続され、該大気連通管に前記大気流
入用の弁が設けられており、 前記上流側真空下水管の該大気連通管の接続部分よりも
上流側に前記逆流阻止弁が設けられていることを特徴と
する真空式下水道の伏越。 (2)The upstream vacuum sewage according to claim 1,
An air communication pipe is connected to the pipe, and the air flow is connected to the air communication pipe.
There is an input valve, The upstream side vacuum drain pipe is connected to the connection portion of the atmosphere communication pipe.
Characterized in that the check valve is provided on the upstream side.
Of the vacuum sewer.
管と通水管とが気液分離器を介して連通され、 該気液分離器に前記通気管が接続され、 該気液分離器に前記大気流入用の弁が設けられ、 該気液分離器と上流側真空下水管との接続部に前記逆流
阻止弁が設けられていることを特徴とする真空式下水道
の伏越。 (3)The upstream vacuum sewage according to claim 1,
The pipe and the water pipe are communicated via a gas-liquid separator, The gas pipe is connected to the gas-liquid separator, The gas-liquid separator is provided with the air inflow valve, The backflow flows into the connection between the gas-liquid separator and the upstream vacuum sewer pipe.
Vacuum sewer characterized by having a check valve
Prone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP05906794A JP3265809B2 (en) | 1994-03-29 | 1994-03-29 | Sewage of vacuum sewer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP05906794A JP3265809B2 (en) | 1994-03-29 | 1994-03-29 | Sewage of vacuum sewer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07268936A JPH07268936A (en) | 1995-10-17 |
| JP3265809B2 true JP3265809B2 (en) | 2002-03-18 |
Family
ID=13102642
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP05906794A Expired - Fee Related JP3265809B2 (en) | 1994-03-29 | 1994-03-29 | Sewage of vacuum sewer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3265809B2 (en) |
-
1994
- 1994-03-29 JP JP05906794A patent/JP3265809B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07268936A (en) | 1995-10-17 |
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