JP3299898B2 - Air dispersion tube for air washing type filtration device - Google Patents
Air dispersion tube for air washing type filtration deviceInfo
- Publication number
- JP3299898B2 JP3299898B2 JP33703596A JP33703596A JP3299898B2 JP 3299898 B2 JP3299898 B2 JP 3299898B2 JP 33703596 A JP33703596 A JP 33703596A JP 33703596 A JP33703596 A JP 33703596A JP 3299898 B2 JP3299898 B2 JP 3299898B2
- Authority
- JP
- Japan
- Prior art keywords
- air
- pipe
- water
- perforated block
- orifice
- 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 - Lifetime
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- Filtration Of Liquid (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、生活廃水、食品廃
水、化学・製薬廃水、埋立地浸出水、上水、用水、なら
びに海水等の幅広い分野の水を濾過する濾過装置に付設
する空気分散管に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air dispersion device provided for a filtration device for filtering water in a wide range of fields, such as domestic wastewater, food wastewater, chemical / pharmaceutical wastewater, landfill leachate, tap water, service water, and seawater. About pipes.
【０００２】[0002]
【従来の技術および発明が解決しようとする課題】従来
より、円形または矩形の濾過槽内に、砂利、砂、活性炭
およびプラスチック濾材などの粒状媒体を支持材によっ
て支持して濾層を形成し、濾過槽上部または下部から原
水を供給して下向流または上向流で通水し、原水中の汚
濁物質を濾過作用を利用して濾過することを特徴とする
濾過装置が知られている。例えば、図２に示すように、
濾過装置１には、上部に原水供給口２を有する濾過槽３
内の最下部に、洗浄用空気の分配および処理水、逆洗水
の集配水を均等に行う気水分配装置４が設置され、気水
分配装置４の上部に数層の砂利による支持層５を介して
濾材を充填した濾層６を形成し、上部フリーボード部に
水抜管７と逆洗排水トラフ８を設け、懸濁物を多量に含
んだ洗浄排水を確実に効率よく排出するようにしたもの
であり、懸濁物の多い原水に対しては、濾層中間部より
やや上部に中間洗浄管９を設けて通水中に濾層６上部の
中間洗浄を図ろうとするものである。2. Description of the Related Art Conventionally, a filter layer is formed by supporting a granular medium such as gravel, sand, activated carbon, and a plastic filter medium in a circular or rectangular filter tank with a support material. 2. Description of the Related Art There is known a filtering apparatus characterized in that raw water is supplied from an upper part or a lower part of a filtration tank and is supplied in a downward flow or an upward flow to filter pollutants in the raw water by using a filtering action. For example, as shown in FIG.
The filtration device 1 includes a filtration tank 3 having a raw water supply port 2 at the top.
At the lowermost part of the inside, a water / water distribution device 4 for evenly distributing the cleaning air and collecting and distributing treated water and backwash water is installed, and a support layer 5 of several layers of gravel is provided on the upper part of the water / water distribution device 4. To form a filter layer 6 filled with a filter medium, and a drainage pipe 7 and a backwash drainage trough 8 are provided in the upper free board so that washing wastewater containing a large amount of suspended matter is efficiently discharged. In the case of raw water with a large amount of suspended matter, an intermediate washing pipe 9 is provided slightly above the middle part of the filter layer to perform intermediate washing of the upper part of the filter layer 6 while passing water.
【０００３】上記濾層６を形成する濾材の種類および濾
材の粒径は処理目的に応じて使い分けられている。[0003] The type of filter medium and the particle size of the filter medium forming the filter layer 6 are properly used depending on the purpose of processing.
【０００４】上記気水分配装置４は、通水時には散気空
気の分配および処理水の集水、逆洗時には洗浄空気およ
び逆洗水の分散を均等に行う役割を持つもので、従来の
気水分配装置は、いわゆる「有孔ブロック」（特公昭６
０−１３７２４号公報参照）を並列に組み合わせたもの
である。The air / water distribution device 4 has a function of uniformly distributing diffused air and collecting treated water when passing water, and evenly dispersing cleaning air and backwash water during backwashing. The water distribution device is a so-called “perforated block”
0-13724) are combined in parallel.
【０００５】図３は、この有孔ブロックＢの断面図であ
る。有孔ブロックＢは、矩形断面の外殻１０と、この外
殻１０内に略逆Ｖ字形断面の内殻１１を配し、中央通路
１２と中央通路１２の両側に側部通路１３を設け、側部
通路１３に連通して外殻１０上面に複数のオリフィス１
４を形成し、中央通路１２と側部通路１３に連通して内
殻１１に洗浄用空気オリフィス群１５、１６と通水オリ
フィス群１７を紙面に直角方向に設け、通水時と逆洗時
に空気や水の量が変化しても内部の空気均等圧室１８に
より均等性を維持するような配慮がされている。FIG. 3 is a sectional view of the perforated block B. The perforated block B has an outer shell 10 having a rectangular cross section, and an inner shell 11 having a substantially inverted V-shaped cross section disposed inside the outer shell 10, and a central passage 12 and side passages 13 provided on both sides of the central passage 12. A plurality of orifices 1 are provided on the upper surface of the outer shell 10 in communication with the side passages 13.
4 are formed, and the inner shell 11 is provided with cleaning air orifice groups 15 and 16 and a water flow orifice group 17 in a direction perpendicular to the paper surface so as to communicate with the central passage 12 and the side passages 13 so as to be provided at the time of water passage and backwashing. Even if the amount of air or water changes, care is taken to maintain uniformity by the internal equal pressure chamber 18.
【０００６】上記のような濾過装置において、濾過を効
果的に行い、濾材の長寿命化を図るために、適宜洗浄が
行われている。この洗浄方法としては、次に説明するよ
うな方法が行われている。すなわち、図３に示す空気分
散管１９内に圧力空気を通入し、この空気圧により配管
１９内の水位を徐々に押し下げ、やがて配管１９内の水
を外部に排除すると、配管１９内の圧力空気はこの配管
の底部の小孔２０より吐出され、上部にある有孔ブロッ
クに到達する。そして、同様にして、空気圧により有孔
ブロック内の水を押し下げ、やがて、有孔ブロック内の
水位がオリフィス群１５の高さまで低下すると、圧力空
気はオリフィス群１５から上方の濾層（図２の６）に向
かって上昇していく。さらに、有孔ブロック内の水位が
オリフィス群１６のレベルまで低下すると、このオリフ
ィス群からも圧力空気が吐出される。そして、これらの
圧力空気により濾層を形成する濾材表面に蓄積した懸濁
物質が引き剥がされるようにして除去され、続いて有孔
ブロックの下部から濾層に通入される逆洗水とともに、
これら懸濁物質は外部に排出される。かくして、濾材表
面は初期に近い状態に回復し、引き続き目的とする水の
濾過を行うことができるのである。[0006] In the above-described filtration apparatus, washing is appropriately performed in order to effectively perform filtration and extend the life of the filter medium. As this cleaning method, the following method is performed. That is, when the pressurized air is introduced into the air dispersion pipe 19 shown in FIG. 3 and the water pressure in the pipe 19 is gradually lowered by this air pressure, and the water in the pipe 19 is removed to the outside, the compressed air in the pipe 19 Is discharged from the small hole 20 at the bottom of this pipe and reaches the perforated block at the top. Then, in the same manner, the water in the perforated block is pushed down by air pressure, and when the water level in the perforated block falls to the height of the orifice group 15, the pressurized air flows from the orifice group 15 to the upper filter layer (FIG. 2). It rises toward 6). Further, when the water level in the perforated block falls to the level of the orifice group 16, the compressed air is also discharged from this orifice group. Then, the suspended matter accumulated on the surface of the filter medium forming the filter layer is removed by the pressure air so as to be peeled off, and then, together with the backwash water flowing into the filter layer from the lower part of the perforated block,
These suspended substances are discharged outside. Thus, the surface of the filter medium is restored to a state close to the initial state, and the target water can be continuously filtered.
【０００７】しかし、配管１９底部の小孔２０から続々
と吐出される気泡２１は不特定の方向に上昇するため、
この気泡の影響で有孔ブロック内の水面Ｗが波立ち、こ
の波立ちのために、オリフィス群１５からの圧力空気の
吐出が途切れたり、不規則なタイミングで圧力空気が吐
出することがある。さらに、紙面直角方向における有孔
ブロックＢ内の水位は一定でなく、山なりにうねること
がある。その結果、有孔ブロックから吐出される圧力空
気は、紙面直角方向において均一でなくなり、特定のオ
リフィスからは比較的多量の空気が吐出され、一部のオ
リフィスからは少量の空気しか吐出されないということ
が起こり、そのために濾層に洗浄不良箇所が生じてしま
う。さらに、空気と水を同時に流す気水洗浄時には小孔
２０から吐出される気泡２１は洗浄水の水流に同伴さ
れ、所定の有孔ブロック内に入らず他の有孔ブロックに
入り、その結果、有孔ブロックごとの空気の供給量が不
均一となり、さらなる濾層の洗浄不良を引き起こしてし
まう。However, the bubbles 21 discharged one after another from the small holes 20 at the bottom of the pipe 19 rise in an unspecified direction.
Due to the influence of the bubbles, the water surface W in the perforated block undulates, and due to the undulation, the discharge of the pressurized air from the orifice group 15 may be interrupted or the pressurized air may be discharged at irregular timing. Further, the water level in the perforated block B in the direction perpendicular to the paper surface is not constant, and may undulate. As a result, the pressure air discharged from the perforated block is not uniform in the direction perpendicular to the plane of the paper, a relatively large amount of air is discharged from a specific orifice, and a small amount of air is discharged from some orifices. Occurs, which results in defective washing of the filter layer. Furthermore, at the time of air-water cleaning in which air and water are simultaneously flown, bubbles 21 discharged from the small holes 20 are entrained by the water flow of the cleaning water and do not enter the predetermined perforated block but enter another perforated block. As a result, The supply amount of air for each perforated block becomes non-uniform, which causes further poor cleaning of the filter layer.
【０００８】また、この方式では、配管１９底部の小孔
２０の位置が最深部のため、水圧が高くなり、揚程が比
較的大きな圧力空気通入用ブロワーが必要である。Further, in this system, since the position of the small hole 20 at the bottom of the pipe 19 is the deepest portion, the water pressure becomes high and a pressure air blower having a relatively large head is required.
【０００９】本発明と同様Ｊチューブ方式（図４参照）
もあるが、Ｊチューブ方式は製作精度、取付精度等の困
難さにより、Ｊチューブ内の水が排出されない場合があ
る。結果的に、多数列のＶ溝内に均等に空気を送り込む
ことができない。As in the present invention, a J-tube system (see FIG. 4)
However, in the J-tube method, water in the J-tube may not be discharged due to difficulties in manufacturing accuracy and mounting accuracy. As a result, the air cannot be evenly fed into the multi-row V-grooves.
【００１０】本発明は従来の技術の有するこのような問
題点に鑑みてなされたものであって、その目的は、空気
を均等に分散・放出する機能を有する低コストの空気洗
浄型濾過装置用空気分散管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-mentioned problems of the prior art, and has as its object to provide a low-cost air-cleaning filter having a function of uniformly dispersing and releasing air. An object of the present invention is to provide an air distribution pipe.
【００１１】[0011]
【課題を解決するための手段】上記目的を達成するため
に本発明は、空気分散管内に短管の一端を装入し、この
短管の他端を有孔ブロック内に達せしめ且つ短管の他端
側の空気排出口は内殻に設けた最上位のオリフィスより
上位に位置させ、この短管の他端側の空気排出口から有
孔ブロック内に圧力空気を吐出するように構成したの
で、有孔ブロック内に波立ちが起きることもなく、有孔
ブロック内の水面は平坦な状態で水位は一様に低下す
る。その結果、有孔ブロック上面のオリフィス群のいず
れの部分からもほぼ均等に圧力空気が放出され、濾層の
ほぼ全容積にわたって良好に洗浄が行われ、洗浄不良箇
所が生じることはない。また、気水洗浄時には、洗浄水
の水流の影響を受けることがないので、各有孔ブロック
ごとの空気供給量が一定となり、良好に洗浄が行われ
る。Means for Solving the Problems The present invention to achieve the above object, charged with one end of the short tube on the air distribution tube, and allowed to reach the other end of the short tube perforated block short tube The other end of
Side air outlet is from the top orifice on the inner shell
It is located at the upper position, and it is configured to discharge the pressurized air into the perforated block from the air discharge port on the other end side of this short tube, so that no ripple occurs in the perforated block and the inside of the perforated block The water surface is flat and the water level drops uniformly. As a result, the pressure air is almost uniformly discharged from any part of the orifice group on the upper surface of the perforated block, and the washing is performed well over almost the entire volume of the filter layer. In addition, at the time of air-water cleaning, since there is no influence of the flow of the cleaning water, the air supply amount for each perforated block is constant, and cleaning is performed well.
【００１２】[0012]
【発明の実施の形態】すなわち、本発明は、粒状媒体を
充填した濾層を有する濾過槽に原水を下向流または上向
流で通水する濾過装置における上記濾過槽の下部に設置
された有孔ブロックの直下に設けた空気洗浄型濾過装置
用空気分散管において、上記有孔ブロックが、外殻およ
び該外殻内に中央通路と該中央通路両側に側部通路とを
形成するように外殻内に配置された略逆Ｖ字形断面の内
殻からなり、さらに、上記外殻上部に両側部通路に連通
する少なくとも１つのオリフィスを有し、上記内殻の上
方部分に中央通路と側部通路とを連通する少なくとも１
つのオリフィスが設けられており、上記空気分散管の長
手方向に直交するように空気分散管内に短管の一端を装
入し、該短管の他端は上記有孔ブロック内の逆Ｖ字形断
面の内殻の頂部近傍に達し且つ短管の他端側の空気排出
口は内殻に設けた最上位のオリフィスより上位に位置し
ていることを特徴とする空気洗浄型濾過装置用空気分散
管を第一の発明とし、上記第一の発明において、空気分
散管内の短管の上部に小孔を設けたことを特徴とする空
気洗浄型濾過装置用空気分散管を第二の発明とする。DETAILED DESCRIPTION OF THE INVENTION That is, the present invention is installed at a lower part of the above-mentioned filtration tank in a filtration apparatus in which raw water flows through a filtration tank having a filtration layer filled with a granular medium in a downward flow or an upward flow. In the air dispersion pipe for an air-washing filter provided immediately below a perforated block, the perforated block forms an outer shell, a central passage in the outer shell, and side passages on both sides of the central passage. An inner shell having a substantially inverted V-shaped cross-section disposed in the outer shell, and further having at least one orifice communicating with both side passages at an upper portion of the outer shell, and having a central passage and a side at an upper portion of the inner shell; At least one communicating with the external passage
One orifice is provided, and one end of a short pipe is inserted into the air distribution pipe so as to be orthogonal to the longitudinal direction of the air distribution pipe, and the other end of the short pipe is inverted V-shaped cross section in the perforated block. Air exhaust near the top of the inner shell and at the other end of the short tube
The mouth is located above the highest orifice on the inner shell
The air-cleaning filtering device for air dispersion tube, characterized in that is the first invention, in the first invention, the air which is characterized in that a small hole at the top of the short tube of the air dispersion tube A second aspect of the present invention is an air dispersion pipe for a washing type filtration device.
【００１３】以上のように構成される空気洗浄型濾過装
置用空気分散管によれば、空気分散管内に圧力空気を通
入すると、この空気圧により空気分散管内の水位は低下
し、短管端部位置にまで水位が低下すると、圧力空気は
短管内に流入し、短管内を上昇して有孔ブロックにまで
達する。そして、有孔ブロック内の水面を波立たせるこ
となく水位を低下させ、内殻のオリフィス部分にまで水
位が低下すると、このオリフィスから圧力空気は吐出さ
れる。このようにして、外殻のオリフィス群のいずれの
部分からもほぼ一様に圧力空気は放出されるので、濾層
のほぼ全容積にわたって良好に洗浄が行われる。また、
多数並列にならんだ有孔ブロックの各ブロックごとに短
管を挿入することができるため、有孔ブロックごとの空
気供給量が一定となり、良好に洗浄が行われる。According to the air dispersion pipe for an air-washing filter configured as described above, when pressurized air is introduced into the air dispersion pipe, the water pressure in the air dispersion pipe drops due to this air pressure, and the end of the short pipe is reduced. When the water level drops to the position, the pressurized air flows into the short pipe and rises in the short pipe to reach the perforated block. Then, when the water level is lowered without making the water surface in the perforated block undulate, and the water level is lowered to the orifice portion of the inner shell, the pressurized air is discharged from the orifice. In this way, the pressurized air is almost uniformly discharged from any part of the orifice group of the outer shell, so that good washing is performed over almost the entire volume of the filter layer. Also,
Since a short pipe can be inserted for each block of a plurality of perforated blocks arranged in parallel, the air supply amount for each perforated block is constant, and cleaning is performed well.
【００１４】[0014]
【実施例】以下に本発明の実施例を説明する。図１にお
いて、空気分散管１９内に短管２２の一端が装入され、
短管２２の他端は上方の有孔ブロックの逆Ｖ字形断面の
内殻１１の頂部近傍に達しており（Ｉチューブ方式）、
且つ短管２２の他端側の空気排出口２４は内殻に設けた
最上位の洗浄用空気オリフィス群１５より上位に位置し
ている。また、空気分散管１９内の短管２２の上部には
小孔２３が設けられている。このような小孔２３を設け
ることにより、分散管１９内の水位が短管２２の一端Ｅ
1 のレベルに低下するまでに、この小孔２３から圧力空
気が短管２２内に流入し、エアリフト効果により空気洗
浄開始時間が早まる効果が期待できる。Embodiments of the present invention will be described below. In FIG. 1, one end of a short pipe 22 is inserted into an air distribution pipe 19,
The other end of the short pipe 22 is reached near the top portion of the inner shell 11 of the inverted V-shaped cross-section above the perforated block (I tube system),
The air outlet 24 at the other end of the short pipe 22 is provided in the inner shell.
Higher than the top cleaning air orifice group 15
ing. Further, a small hole 23 is provided above the short pipe 22 in the air dispersion pipe 19. By providing such small holes 23, the water level in the dispersion pipe 19 becomes one end E of the short pipe 22.
The pressure air flows into the short pipe 22 from the small holes 23 until the level decreases to 1 , and the effect of shortening the air cleaning start time due to the air lift effect can be expected.
【００１５】次に、空気分散管の形式の違いによる放出
空気の分散性と作業開始から空気洗浄開始までの時間の
比較試験を、実際の浄水場の実濾過装置を用いて行った
ので、その結果を次の表１に記載する。Next, a comparative test of the dispersibility of the released air and the time from the start of work to the start of air washing due to the difference in the type of air dispersion pipe was performed using an actual filtration device of an actual water purification plant. The results are set forth in Table 1 below.
【００１６】[0016]
【表１】 [Table 1]
【００１７】表１に明らかなように、本実施例のもの
は、放出空気の分散性が良好で、空気洗浄開始までの時
間が短く、消費電力も小さい。As is clear from Table 1, this embodiment has a good dispersibility of the released air, a short time until the start of air cleaning, and a small power consumption.
【００１８】しかし、「Ｊチューブ方式」（図４参照）
は、放出空気の分散性がやや不良で、空気洗浄開始まで
の時間が長く、消費電力が多い。というのは、図４に示
すように、Ｊチューブ方式は水平部分Ｈが存在するため
に、この水平部分が一様な圧力空気の放出の妨げとな
り、一部のＪチューブからは比較的多くの圧力空気が放
出されるが、別のＪチューブからは少量の圧力空気しか
放出されないことがある。その結果、放出空気の分散性
は悪く、空気洗浄開始までの時間も長くなるのである。
また、水平部分ＨからＪチューブ上端Ｅ2 までの長さも
長い（揚程が大きい）ので、消費電力も多くなったもの
と思われる。However, the "J tube method" (see FIG. 4)
Has a slightly poor dispersibility of the released air, a long time to start air cleaning, and a large power consumption. This is because, as shown in FIG. 4, in the J-tube method, since the horizontal portion H exists, the horizontal portion hinders the uniform discharge of the pressurized air. The pressurized air is released, but only a small amount of pressurized air may be released from another J-tube. As a result, the dispersibility of the released air is poor, and the time until the start of air cleaning is prolonged.
Further, since the length of the horizontal portion H to J tube upper end E 2 is long (lift is large), it is believed that the power consumption is also increased.
【００１９】また、多孔管方式（図３参照）は、上記し
たような欠点を有するので、「Ｊチューブ方式」同様に
放出空気の分散性は悪く、空気洗浄開始までの時間も長
く、消費電力も多い。Further, the perforated tube method (see FIG. 3) has the above-mentioned drawbacks, so that the dispersibility of the released air is poor, the time until the start of air cleaning is long, and the power consumption is low, as in the "J tube method". There are many.
【００２０】本発明は、上記実施の形態の他に、溶解性
の有機物を除去するのに用いられる、濾材に生物を付着
させた生物膜濾過装置、活性炭吸着装置等にも適用でき
る。それらは原水の水質によって適宜選択されるもので
あり、また下向流あるいは上向流で通水するかどうかも
適宜選択されるものである。The present invention can be applied to a biofilm filtration device, an activated carbon adsorption device, and the like in which organisms are attached to a filter medium, which are used for removing soluble organic substances, in addition to the above embodiment. They are appropriately selected depending on the quality of the raw water, and whether or not the water is passed in a downward flow or an upward flow is also appropriately selected.
【００２１】[0021]
【発明の効果】本発明は上記のとおり構成されているの
で、放出空気は均等に分散され、空気洗浄開始までの時
間が短く、消費電力も少なく、また形状がシンプルであ
る、極めて効率的な空気洗浄型濾過装置用空気分散管を
提供することができる。Since the present invention is constructed as described above, the discharged air is evenly dispersed, the time to start air cleaning is short, the power consumption is small, and the shape is simple. It is possible to provide an air dispersion tube for an air washing type filtration device.
【図１】本発明の空気分散管（Ｉチューブ方式）と有孔
ブロックの構成を示す拡大断面図である。FIG. 1 is an enlarged sectional view showing a configuration of an air distribution pipe (I-tube method) and a perforated block of the present invention.
【図２】一般的な濾過装置の概略構成を示す図である。FIG. 2 is a diagram showing a schematic configuration of a general filtration device.
【図３】図３（ａ）は従来の空気分散管（多孔管方式）
と有孔ブロックの構成を示す拡大断面図、図３（ｂ）は
この空気分散管の断面図である。FIG. 3 (a) is a conventional air dispersion pipe (perforated pipe method).
And FIG. 3B is a cross-sectional view of the air distribution tube.
【図４】従来の空気分散管（Ｊチューブ方式）と有孔ブ
ロックの構成を示す拡大断面図である。FIG. 4 is an enlarged cross-sectional view showing a configuration of a conventional air distribution pipe (J-tube type) and a perforated block.
１…濾過装置 ３…濾過槽 ４…気水分配装置 ６…濾層 １０…外殻 １１…内殻 １２…中央通路 １３…側部通路 １４…オリフィス １５、１６…洗浄用空気オリフィス群 １７…通水オリフィス群 １９…空気分散管 ２２…短管 ２３…小孔２４…空気排出口 Ｂ…有孔ブロックDESCRIPTION OF SYMBOLS 1 ... Filtration apparatus 3 ... Filtration tank 4 ... Air-water distribution apparatus 6 ... Filter layer 10 ... Outer shell 11 ... Inner shell 12 ... Central passage 13 ... Side passage 14 ... Orifice 15, 16 ... Cleaning air orifice group 17 ... Communication Water orifice group 19 ... air dispersion pipe 22 ... short pipe 23 ... small hole 24 ... air discharge port B ... perforated block
Claims (2)
に原水を下向流または上向流で通水する濾過装置におけ
る上記濾過槽の下部に設置された有孔ブロックの直下に
設けた空気洗浄型濾過装置用空気分散管において、上記
有孔ブロックが、外殻および該外殻内に中央通路と該中
央通路両側に側部通路とを形成するように外殻内に配置
された略逆Ｖ字形断面の内殻からなり、さらに、上記外
殻上部に両側部通路に連通する少なくとも１つのオリフ
ィスを有し、上記内殻の上方部分に中央通路と側部通路
とを連通する少なくとも１つのオリフィスが設けられて
おり、上記空気分散管の長手方向に直交するように空気
分散管内に短管の一端を装入し、該短管の他端は上記有
孔ブロック内の逆Ｖ字形断面の内殻の頂部近傍に達し且
つ短管の他端側の空気排出口は内殻に設けた最上位のオ
リフィスより上位に位置していることを特徴とする空気
洗浄型濾過装置用空気分散管。1. A filter device having a filtration layer having a filter layer filled with a granular medium and having raw water flow therethrough in a downward flow or an upward flow, provided directly below a perforated block provided at a lower portion of the filtration tank. In the air dispersion pipe for an air-washing filter, the perforated block is disposed in the outer shell so as to form an outer shell, a central passage in the outer shell, and side passages on both sides of the central passage. An inner shell having an inverted V-shaped cross-section, and further comprising at least one orifice communicating with both side passages at an upper portion of the outer shell, and at least one orifice communicating a central passage and a side passage with an upper portion of the inner shell. One orifice is provided, and one end of a short pipe is inserted into the air distribution pipe so as to be orthogonal to the longitudinal direction of the air distribution pipe, and the other end of the short pipe is inverted V-shaped cross section in the perforated block. 且 reached near the top of the inner shell of
The air outlet at the other end of the short tube is the uppermost
An air dispersion pipe for an air-washing type filtration device, which is positioned higher than the orifice .
たことを特徴とする請求項１記載の空気洗浄型濾過装置
用空気分散管。2. The air dispersion tube according to claim 1, wherein a small hole is provided at an upper portion of the short tube in the air dispersion tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33703596A JP3299898B2 (en) | 1996-12-17 | 1996-12-17 | Air dispersion tube for air washing type filtration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33703596A JP3299898B2 (en) | 1996-12-17 | 1996-12-17 | Air dispersion tube for air washing type filtration device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH10174805A JPH10174805A (en) | 1998-06-30 |
| JP3299898B2 true JP3299898B2 (en) | 2002-07-08 |
Family
ID=18304833
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP33703596A Expired - Lifetime JP3299898B2 (en) | 1996-12-17 | 1996-12-17 | Air dispersion tube for air washing type filtration device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3299898B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100709254B1 (en) * | 2005-07-29 | 2007-04-19 | 삼성에스디아이 주식회사 | A plasma display panel |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100756820B1 (en) | 2007-01-22 | 2007-09-07 | 김원기 | Water catchment equipment capable of backwashing by water and air |
| JP4966884B2 (en) * | 2008-02-07 | 2012-07-04 | 株式会社神鋼環境ソリューション | Filtration water collecting device and gas discharge pipe |
| JP5957591B1 (en) * | 2015-11-19 | 2016-07-27 | 株式会社神鋼環境ソリューション | Water treatment equipment |
-
1996
- 1996-12-17 JP JP33703596A patent/JP3299898B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100709254B1 (en) * | 2005-07-29 | 2007-04-19 | 삼성에스디아이 주식회사 | A plasma display panel |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH10174805A (en) | 1998-06-30 |
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