JP4384111B2 - Overflow water dust remover - Google Patents

Overflow water dust remover Download PDF

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JP4384111B2
JP4384111B2 JP2005355617A JP2005355617A JP4384111B2 JP 4384111 B2 JP4384111 B2 JP 4384111B2 JP 2005355617 A JP2005355617 A JP 2005355617A JP 2005355617 A JP2005355617 A JP 2005355617A JP 4384111 B2 JP4384111 B2 JP 4384111B2
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water
overflow
stop plate
cylindrical screen
dust
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JP2007162210A (en
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邦博 古舞
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Hitachi Plant Technologies Ltd
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Hitachi Plant Technologies Ltd
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Description

本発明は、越流水の除塵装置に関し、特に、円筒形スクリーンにより目詰まりを生じさせることなく効率的かつ確実に除塵するとともに、水位上昇に対応することができる越流水の除塵装置に関するものである。   The present invention relates to a dust removal apparatus for overflowing water, and more particularly, to a dust removal apparatus for overflowing water that can efficiently and reliably remove dust without causing clogging by a cylindrical screen and can cope with a rise in water level. .

従来、分流式下水道の管渠施設においては、雨天時における雨水を一時的に雨水貯留池に貯留したり、また、合流式管渠の雨水吐き室では、雨水流出量の内、処理場で汚水として扱う下水量以上の雨水を放流管渠によって河川や海域、湖沼等に放流するようにしている。   Conventionally, in sewerage sewerage facilities, rainwater during rainy weather is temporarily stored in a rainwater reservoir, and in the rainwater discharge chamber of confluent sewerage, sewage is treated at the treatment plant. More than the amount of sewage treated as wastewater is discharged into rivers, sea areas, lakes, etc. by discharge pipes.

これらの施設では、雨水貯留池や放流管渠への流入部に適当な高さの越流堰を設け、該越流堰で雨水流入量を調整するようにしている。
しかし、降雨初期の増水に伴う上記施設への越流水には、分流式下水道の雨水管渠では道路面のごみが、また合流式管渠では道路面のごみや汚物等が含まれており、これらは、越流部分から貯留池や河川等へと流れ込むため、利水における障害となったり、放流水域を汚濁するという問題があった。
In these facilities, an overflow overflow weir is provided at the inflow to the rainwater storage pond and discharge pipe, and the amount of rainwater inflow is adjusted by the overflow weir.
However, the overflow water to the above facilities due to the increase in the amount of water at the beginning of the rain includes roadside garbage in the sewer pipes of the sewerage sewerage system, and roadside garbage and filth in the combined pipes. However, there are problems such as obstructing water use and polluting the discharge water area because it flows into the reservoir and river from the overflow section.

そこで、この利水における障害や放流水域の汚濁を防止する目的で、雨水に含まれるごみ等が貯留池や河川等へ流入するのを防ぐように、合流管渠の主幹線から越流雨水幹線への落ち口等に除塵装置を配設している。
この除塵装置は、例えば、越流雨水幹への落ち口等に、バースクリーンを垂直あるいは上部が後退するように傾斜して配設し、バースクリーンに捕捉されたごみを、バースクリーンに沿って移動するレーキ装置にて掻き取り排出するようにしている。
Therefore, from the main line of the confluence pipe basin to the overflow storm water main line, in order to prevent the wastewater contained in the rainwater from flowing into the storage ponds and rivers, etc., in order to prevent the damage in the water use and the pollution of the discharge water area. A dust remover is installed at the outlet of the sewage.
For example, this dust removing device is arranged such that the bar screen is arranged vertically or inclined so that the upper part is retracted at the entrance to the overflow rainwater trunk, and the dust captured by the bar screen is disposed along the bar screen. The moving rake device is scraped and discharged.

ところで、上記従来の越流水の除塵装置においては、バースクリーン式除塵機などにおいては、除去すべき流量に合わせてスクリーン高さなどが予め定められているが、雨水貯留池へ流入する雨水や、放流管渠を経て河川、湖沼等に放流する雨水流量は不確定であり、一定水位での処理は困難であることから、スクリーン上部のオーバーフローが頻繁に生じるなどの問題があった。   By the way, in the above conventional overflow water dust remover, in the bar screen type dust remover and the like, the screen height and the like are predetermined according to the flow rate to be removed, but the rainwater flowing into the rainwater reservoir, The amount of rainwater discharged into rivers, lakes, etc. via discharge pipes is uncertain, and it is difficult to process at a constant water level, so there are problems such as frequent overflow of the upper part of the screen.

本発明は、上記従来の越流水の除塵装置が有する問題に鑑み、スクリーン上部からのオーバーフローを回避するとともに、目詰まりを生じさせることなく効率的かつ確実に除塵できるようにした越流水の除塵装置を提供することを目的とする。   In view of the problems of the conventional overflow water dust removal apparatus, the present invention avoids overflow from the upper part of the screen and can efficiently and reliably remove dust without causing clogging. The purpose is to provide.

上記目的を達成するため、本発明の越流水の除塵装置は、流水路に設けた越流堰上に半円筒状の円筒形スクリーンを配設するとともに、該円筒形スクリーンの側方に円筒形スクリーンの上部位置を超える水位の場合に越流水を放流する開口部を形成し、該開口部に止水板を開放可能に配設した越流水の除塵装置であって、止水板を転倒回転シャフトを境として上半部が下半部より高く形成し、水位が上昇して止水板の上半部にかかる水圧が下半部にかかる水圧を越えたときに、自動的に止水板の上部側が下流側に転倒して越流水を放流するようにしたことを特徴とする。 In order to achieve the above object, the dust removal apparatus for overflow water according to the present invention has a semi-cylindrical cylindrical screen disposed on the overflow weir provided in the flow channel, and a cylindrical shape on the side of the cylindrical screen. An overflow water dust removal device that forms an opening that discharges overflow water when the water level exceeds the upper position of the screen, and the water stop plate can be opened in the opening. The upper half is formed higher than the lower half with the shaft as a boundary, and when the water level rises and the water pressure on the upper half of the water stop plate exceeds the water pressure on the lower half, the water stop plate is automatically The upper side of the waterfall falls down to the downstream side and the overflow water is discharged .

本発明の越流水の除塵装置によれば通常の水位では、越流堰上に配設した円筒形スクリーンにより一定範囲のごみは除去し、ごみ除去の必要以上の水位では、止水板を開放することにより流入水量増加に伴う水位上昇を防止することができ、これにより、越流水に含まれるごみの濾過除去を高効率で行うことができる。 According to the overflow water dust removing apparatus of the present invention , at a normal water level, a certain range of dust is removed by a cylindrical screen disposed on the overflow weir, and at a water level that is more than necessary for dust removal, a water stop plate is attached. By opening it, it is possible to prevent an increase in the water level due to an increase in the amount of inflow water, and thus it is possible to filter and remove the waste contained in the overflow water with high efficiency.

以下、本発明の越流水の除塵装置の実施の形態を図面に基づいて説明する。   Hereinafter, embodiments of the dust removal apparatus for overflow water of the present invention will be described with reference to the drawings.

図1〜図3に、本発明の越流水の除塵装置を、越流雨水幹への落ち口等に適用した実施例を示す。
この越流水の除塵装置は、越流雨水幹への落ち口等に形成した越流水を濾過するように、越流堰1の上に半円筒状の円筒形スクリーン2を配設するとともに、該円筒形スクリーン2の側方に、所定水位を超える越流水を放流する開口部を形成し、該開口部に止水板3を開放可能に配設している。
1 to 3 show an embodiment in which the overflow water dust removing device of the present invention is applied to an outlet to an overflow rainwater trunk.
This overflow water dust removing device is provided with a semi-cylindrical cylindrical screen 2 on the overflow weir 1 so as to filter overflow water formed at the outlet to the overflow rainwater trunk, and the like. An opening for discharging overflow water exceeding a predetermined water level is formed on the side of the cylindrical screen 2, and the water stop plate 3 is disposed in the opening so as to be openable.

円筒形スクリーン2は、所要の径と長さを有し、流水路6側に開口する半円筒状の濾過体からなり、周面はパンチングメタル等の微細目スクリーンで構成されるとともに、両端部は端板により閉塞されている。
この円筒形スクリーン2は、越流雨水幹への落ち口等に越流水を濾過するように配設されており、円筒形スクリーン2内部に溜まったごみを掻き出すスクリュー式排出装置7と、該スクリュー式排出装置7を駆動するスクリーン駆動用水車4とを備えている。
The cylindrical screen 2 has a required diameter and length, and is formed of a semi-cylindrical filter body that opens to the flowing water channel 6 side. Is closed by an end plate.
The cylindrical screen 2 is disposed so as to filter the overflow water at a spillway to the overflow rainwater trunk, the screw type discharge device 7 that scrapes off the dust accumulated inside the cylindrical screen 2, and the screw And a screen-driven water turbine 4 for driving the type discharge device 7.

また、円筒形スクリーン2は、越流堰1の上方位置に配設する際、特に限定されるものではないが、例えば、図1及び図2(a)(b)に示すように、越流雨水の水位が円筒形スクリーン2の上部位置以下の場合は通常処理を行い、越流雨水に含まれるごみ(夾雑物)を濾過により除去できるようにする。
これに対し、越流雨水の水位が円筒形スクリーン2の上部位置を越える場合は、図3及び図2(c)(d)に示すように、転倒止水板3を開放し、開口部よりバイパス水路を形成して異常時処理を行い、水位上昇を軽減する非常放流をできるような構造とする。
これにより、ごみに対しては降雨初期のごみの流入が多い場合を濾過除去し、豪雨時は水理的影響を最小限に抑えることができる。
Moreover, when arrange | positioning in the upper position of the overflow dam 1, the cylindrical screen 2 is not specifically limited, For example, as shown to FIG.1 and FIG.2 (a) (b), it overflows When the rainwater level is below the upper position of the cylindrical screen 2, normal treatment is performed so that dust (contaminants) contained in the overflow rainwater can be removed by filtration.
On the other hand, when the overflow water level exceeds the upper position of the cylindrical screen 2, as shown in FIG. 3 and FIGS. A bypass channel will be formed to handle abnormal conditions and to allow emergency discharge to reduce the rise in water level.
As a result, when there is a large amount of inflow of waste at the beginning of rainfall, it can be filtered out, and the hydraulic effect can be minimized during heavy rain.

一方、開口部は、円筒形スクリーン2の両側に、所定水位を超える越流水を放流するように形成されている。
また、止水板3は、略水平に設置された転倒回転シャフト5を軸に転倒可能に設けられており、上部が下流側に転倒することにより、転倒回転シャフト5の下から越流水を放流するようにしている。
止水板3は、転倒回転シャフト5を境として上半部が下半部より高く大きく形成されており、水位が上昇して上半部にかかる水圧が下半部を越えたときに、自動的に転倒して越流水を放流する。
また、水位が下がると下半部にかかる水圧が上半部を越えることから、止水板3は元の閉止位置に復帰する。復帰後は、止水板3の一部が逆転止めのストッパ(図示省略)に当接することにより、それ以上の回転が阻止され閉止位置が保持される
On the other hand, the openings are formed on both sides of the cylindrical screen 2 so as to discharge overflow water exceeding a predetermined water level.
In addition, the water stop plate 3 is provided so as to be able to fall about the fall rotating shaft 5 installed substantially horizontally, and the upper part falls to the downstream side, so that overflow water is discharged from under the fall rotating shaft 5. Like to do.
The water stop plate 3 is formed so that the upper half is larger than the lower half with the falling rotating shaft 5 as a boundary. When the water level rises and the water pressure applied to the upper half exceeds the lower half, Falls over and discharges overflow water.
When the water level drops, the water pressure applied to the lower half exceeds the upper half, so that the water stop plate 3 returns to the original closed position. After returning, a part of the water stop plate 3 abuts against a reverse stopper (not shown) to prevent further rotation and maintain the closed position .

かくして、本実施例の越流水の除塵装置によれば、流水路6に設けた越流堰1上に半円筒状の円筒形スクリーン2を配設するとともに、該円筒形スクリーン2の側方に所定水位を超える越流水を放流する開口部を形成し、該開口部に止水板3を開放可能に配設することから、通常の水位では、越流堰1上に配設した円筒形スクリーン2により一定範囲のごみは除去し、ごみ除去の必要以上の水位では、止水板3を開放することにより流入水量増加に伴う水位上昇を防止することができ、これにより、越流水に含まれるごみの濾過除去を高効率で行うことができる。   Thus, according to the overflow water dust removing apparatus of the present embodiment, the semi-cylindrical cylindrical screen 2 is disposed on the overflow weir 1 provided in the flowing water channel 6, and on the side of the cylindrical screen 2. Since an opening for discharging overflow water exceeding a predetermined water level is formed and the water stop plate 3 is disposed in the opening so as to be openable, a cylindrical screen disposed on the overflow weir 1 at a normal water level. 2 removes a certain range of dust, and at the water level more than necessary to remove the dust, the water stop plate 3 is opened to prevent the water level from rising due to the increase in the amount of inflowing water, thereby being included in the overflow water. Garbage can be removed with high efficiency.

以上、本発明の越流水の除塵装置について、その実施例に基づいて説明したが、本発明は上記実施例に記載した構成に限定されるものではなく、実施例に記載した構成を適宜組み合わせるなど、その趣旨を逸脱しない範囲において適宜その構成を変更することができる。   As mentioned above, although the dust removal apparatus for overflow water of the present invention has been described based on the embodiments thereof, the present invention is not limited to the configurations described in the above embodiments, and the configurations described in the embodiments are appropriately combined. The configuration can be changed as appropriate without departing from the spirit of the invention.

本発明の越流水の除塵装置は、単にスクリーンでごみを掻き取る方式とは異なり、水位上昇に対する変動が少なく、あらゆる水量に対する濾過除去効果が得られるという特性を有していることから、様々な越流堰の除塵装置の用途に好適に広く用いることができる。   The dust removal apparatus for overflowing water of the present invention has characteristics that, unlike a method of simply scraping dust with a screen, there is little fluctuation with respect to the rise in the water level, and a filtration removal effect for any amount of water can be obtained. It can be suitably used widely for the purpose of the dust removal device of the overflow weir.

本発明の越流水の除塵装置の一実施例を示し、(a)はその平面図、(b)は同正面図である。One Example of the dust removal apparatus of the overflow water of this invention is shown, (a) is the top view, (b) is the same front view. 同越流水の除塵装置を示し、(a)は図1(b)のA−A線断面図、(b)は同B−B線断面図、(c)は図3(b)のA−A線断面図、(d)は同B−B線断面図である。The dust removal apparatus of the overflow water is shown, (a) is the AA sectional view taken on the line of FIG.1 (b), (b) is the BB sectional view, (c) is A-line of FIG.3 (b). A line sectional view, (d) is the same BB line sectional view. 同越流水の除塵装置の放水時の状態を示し、(a)はその平面図、(b)は同正面図である。The state at the time of the water discharge of the dust removal apparatus of the same overflow water is shown, (a) is the top view, (b) is the front view.

1 越流堰
2 円筒形スクリーン
3 転倒止水板
4 水車
5 転倒回転シャフト
6 流水路
7 スクリュー式排出装置
DESCRIPTION OF SYMBOLS 1 Overflow weir 2 Cylindrical screen 3 Fall stop water plate 4 Water wheel 5 Fall rotation shaft 6 Flow channel 7 Screw type discharge device

Claims (1)

流水路に設けた越流堰上に半円筒状の円筒形スクリーンを配設するとともに、該円筒形スクリーンの側方に円筒形スクリーンの上部位置を超える水位の場合に越流水を放流する開口部を形成し、該開口部に止水板を開放可能に配設した越流水の除塵装置であって、止水板を転倒回転シャフトを境として上半部が下半部より高く形成し、水位が上昇して止水板の上半部にかかる水圧が下半部にかかる水圧を越えたときに、自動的に止水板の上部側が下流側に転倒して越流水を放流するようにしたことを特徴とする越流水の除塵装置。 With arranging a semi-cylindrical cylindrical screen overflow Sekiue provided in flowing water channel, opening discharge the overflow water flow when the water level exceeds the upper position of the cylindrical screen to the side of the cylindrical screen The overflowing water dust removing device is arranged so that the water stop plate can be opened in the opening, and the water stop plate is formed so that the upper half is higher than the lower half with the rotating shaft as a boundary. When the pressure rises and the water pressure on the upper half of the water stop plate exceeds the water pressure on the lower half, the upper side of the water stop plate automatically falls to the downstream side to discharge overflow water. A dust removal device for overflowing water.
JP2005355617A 2005-12-09 2005-12-09 Overflow water dust remover Active JP4384111B2 (en)

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