JPS59213420A - Radial-flow filtration apparatus with rectifying tube - Google Patents

Abstract

PURPOSE:To restrain a filter medium from flowing out to a treated water chamber by providing a rectifying pipe communicating with a treated water recovering pipe in a treated water chamber. CONSTITUTION:The original water flowing in from an original water supply pipe 19 flows uniformly upward in an inflow chamber 12, and the suspended matter is removed while passing through a filter medium supporting wall 15 on the inflow side, a granular filter medium 17, and a filter medium supporting wall 16 on the outflow side, and the treated water is obtained. The treated water flows into a treated water chamber 14. Then the treated water flows down while spiralling around the outside of a rectifying pipe 26 to the lower end thereof, then flows into the rectifying pipe 26 and flows upward in the pipe, and flows out to a treated water recovering pipe 20 from the upper end. Meanwhile, the treated water flowing in at a low speed from the central part of the filter medium supporting wall 16 on the outflow side and a circulation clearance at the lower part joins said influent treated water flowing down from the upper part at a high speed to decrease the speed of the treated water flowing down from the upper part. Consequently, since the inflow speed to the treated water chamber 14 is controlled uniformly and the partial inflow at a high speed can be eliminated, the granular filter medium 17 never flows into the treated water chamber 14.

Description

【発明の詳細な説明】 この発明は、粒状ろ過材を利用した重力ろ過装置に係り
、特に占有面積の拡張が抑制できるろ過装置の構造に関
する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a gravity filtration device using granular filter media, and particularly to a structure of a filtration device that can suppress expansion of the occupied area.

従来の粒状ろ過材による重力ろ過装置は、第１図に示す
ようにろ過槽１の下槽から上方に向かって１集配水室２
と支持床３と支持砂利層４とろ過砂層５と原水流入室（
とを順に重ねて設け、ろ過槽１の上から供給菅７を介し
て流入室６に原水を供給するようになっている。そして
この供給原水はろ過砂層５、支持砂利層４を通過する間
に濁質が除去されて集配氷室２内に処理水として集めら
れ、処理水排出管８から回収されるのである。In a conventional gravity filtration device using granular filter media, as shown in FIG.
and supporting bed 3, supporting gravel layer 4, filter sand layer 5, and raw water inlet chamber (
are arranged one on top of the other in order, and raw water is supplied to the inflow chamber 6 from above the filtration tank 1 via the supply tube 7. While this supplied raw water passes through a filter sand layer 5 and a support gravel layer 4, suspended solids are removed and collected as treated water in the collection/distribution ice chamber 2, and recovered from the treated water discharge pipe 8.

しかしてこのろ過装置はろ過要部の高さＨが処理水質に
よりはは一定に設定されているから、ろ過処理量が増加
するとその増加に応じてろ過槽１け横方向に平面的に拡
大されて装置の占有面積を拡張しなければならないとい
う欠点を有するものである。However, in this filtration device, the height H of the main part of the filtration is set to be constant depending on the quality of the treated water, so when the amount of filtration increases, the filter tank will be expanded horizontally by one filter tank according to the increase. This has the disadvantage that the area occupied by the device must be expanded.

この欠点を解消するために開発されたろ過装置がある。A filtration device has been developed to overcome this drawback.

これを第２図により説明する。This will be explained with reference to FIG.

ろ過槽Ｕ内を流入室認とろ過室邦と処理水室１４との竪
形同心（平行にしてもよい）の３室に区分するように、
ろ過室務の両側に流入側ろ材支持壁止と流出側ろ材支持
壁訪とを配設し、この２つのろ材支持壁１５Ｓ１６の間
に粒状ろ過材１７を充填する。The inside of the filtration tank U is divided into three vertically concentric (or parallel) chambers: an inflow chamber, a filtration chamber, and a treated water chamber 14.
An inflow side filter medium support wall stop and an outflow side filter medium support wall stop are arranged on both sides of the filtration room, and granular filter medium 17 is filled between these two filter medium support walls 15S16.

ろ材支持壁１５．１６は粒状ろ過材１７の通過を阻止す
る間隙を無数に形成したフィルタ、篩並びに粒状ろ過材
１７の崩落を阻止する堰板を多段に配した下見板等から
なるものである。また処理水室１４の中を上下に貫通し
てろ過室３の上下と連通ずる粒状ろ過材１７の洗浄背摺
を設ける。さらにろ連槽二の流入室圧に原水供給背止を
連通し、処理水室１４に処理水回収管氏を連通して、流
入した原水をろ過室泌内に充填した粒状ろ過材によりろ
過処理して処理水室１４を介して回収管氏により回収す
る。一方洗浄管摺の下端部に給気管乙を開口し、支持壁
乃の上部内面に越流樋汐を介して濁質排出管部を開口し
て、洗浄管摺内に噴出させた空気により粒状ろ過材１７
を噴き上げて洗浄し、ろ過室８内に捕捉した濁質を排出
管部からろ連槽ｎの外に排出する。The filter media support walls 15 and 16 are made of filters and sieves each having countless gaps to prevent the granular filter media 17 from passing through, and clapboards with multiple tiers of weir plates to prevent the granular filter media 17 from collapsing. . Further, a cleaning backrail for the granular filter material 17 is provided which vertically penetrates inside the treated water chamber 14 and communicates with the upper and lower portions of the filtration chamber 3. Furthermore, a raw water supply backstop is connected to the inflow chamber pressure of the filtration tank 2, a treated water recovery pipe is connected to the treated water chamber 14, and the inflowing raw water is filtered by the granular filter material filled in the filtration chamber. The treated water is collected through the treated water chamber 14 by a collection pipe. On the other hand, an air supply pipe B is opened at the lower end of the cleaning pipe, and a turbidity discharge pipe is opened at the upper inner surface of the support wall via an overflow gutter, and the air blown into the cleaning pipe is used to collect particles. Filter material 17
The turbidity trapped in the filtration chamber 8 is discharged from the discharge pipe section to the outside of the filtration tank n.

すなわちこのろ連槽Ｕは、処理水量を増加するときは、
上方に槽を延長して占有面積の拡張を抑制することがで
きる輻流型ろ過装置である。In other words, when increasing the amount of treated water in this filtration tank U,
This is a flow-through type filtration device that can extend the tank upward to suppress expansion of the occupied area.

しかし、このようなろ連槽のろ材支持壁をスライム等の
付着が少ない下見板構造（ろ過室内が低くなるように傾
斜した傾斜板を間隔をあけて乎行多段に配しかつ上側の
傾斜板の下縁が下側の傾斜板の上縁よりも低位置にある
ようにした構造）にすると、往々にして流出側ろ材支持
壁Ｖの上部流通間隙からろ過材１７が処理水室１４に流
出する現象が起こり、ろ過処理が不能になるという問題
があった。However, the filter media support wall of such a filtration tank has a clapboard structure that reduces the adhesion of slime, etc. If the structure is such that the lower edge is located at a lower position than the upper edge of the lower inclined plate, the filter medium 17 often flows out into the treated water chamber 14 from the upper flow gap of the outflow side filter medium support wall V. There was a problem in that this phenomenon occurred and the filtration process became impossible.

この発明は、ろ過材が処理水室に流出するのを抑制する
ことができるろ過装置を提供することを目的とする。An object of the present invention is to provide a filtration device that can prevent a filter medium from flowing out into a treated water chamber.

この発明の要点は、処理水室内に処理水回収管に連通ず
る整流管を設けて、処理水室上部に高速で流入する処理
水を整流管により下方に迂回させ・処理水室の中、下部
から低速で流入する処理水と合流させて、′流速を制限
し、ろ過材の流出を抑制しようとするものである。The key point of this invention is to provide a rectifier pipe in the treated water chamber that communicates with the treated water recovery pipe, so that the treated water flowing into the upper part of the treated water chamber at high speed is diverted downward by the rectifier pipe. The purpose is to limit the flow rate and prevent the filter media from flowing out by combining the treated water flowing in at a low speed.

この発明の一実施例を第３．４図に基づいて説明する。An embodiment of this invention will be described based on FIG. 3.4.

図において従来と共通する部分は第２図と同じ符号を用
いその説明を省略する。In the figure, parts common to the conventional one are designated by the same reference numerals as in FIG. 2, and their explanation will be omitted.

ろ連槽Ｕの逆円錐形の槽底ＨＡ　（または筒状槽胴ｎＢ
の下部）の外周沿いに環状の流入環尋を設け、この流入
環Ｍの外周に原水供給管１９を連通し、原水供給管用の
連通部と位相、方向を異にして流入環冴と流入室圧とを
連続的に連通ずる。処理水室１４の下部に俯角Ｖをほぼ
４００内外にした誘導傘部をろ過室内に張り出して設け
る。処理水室１４内には上部で処理水回収管氏に連通ず
る整流管部を設け、整流管あの下端を処理水の流入域よ
りも下方の位置で開口する。処理水室１４（含整流管２
６）の上方面は円錐状シュー）２７を棚設して閉塞し洗
浄背摺を貫ｊＨ１させる。洗浄背摺の上方の水面付近に
は周囲を下向きに傾斜させた傘状の冠２８’を持つ緩衝
管圧を設ける。緩衝管圧の下方外側には上下動可能な環
状の濁質回収積用を設け、この濁質回収積怨を濁質排出
管部に連通ずる。濁質排出管部にはろ過室Ｐ内の水面下
に設ける環状の浮渣収集管圀と、流入室正向の水面下に
設ける環状の浮渣収集管３１とを連結する。この浮渣収
集管団、３１には昇降自在に水面に臨む吸入部犯を可撓
に連通させる。Inverted conical tank bottom HA (or cylindrical tank body nB) of filtration tank U
A ring-shaped inflow ring M is provided along the outer periphery of the inflow ring M, and the raw water supply pipe 19 is connected to the outer periphery of the inflow ring M, and the inflow ring and the inflow chamber are connected in a different phase and direction from the communication part for the raw water supply pipe. continuous communication with pressure. A guide umbrella part with a depression angle V of about 400 degrees is provided at the lower part of the treated water chamber 14 so as to project into the filtration chamber. Inside the treated water chamber 14, a rectifying pipe section communicating with the treated water recovery pipe is provided at the upper part, and the lower end of the rectifying pipe is opened at a position below the inflow area of the treated water. Treated water chamber 14 (including rectifier pipe 2
6) A conical shoe 27 is placed on the upper surface of the conical shoe 27 to close it off and pass through the washing backrail. A buffer pipe pressure having an umbrella-shaped crown 28' whose circumference is inclined downward is provided near the water surface above the washing backrail. A vertically movable annular turbidity collection volume is provided below and outside the buffer pipe pressure, and this turbidity collection volume is communicated with the turbidity discharge pipe. An annular sludge collection pipe provided below the water surface in the filtration chamber P and an annular sludge collection pipe 31 provided below the water surface in the front direction of the inflow chamber are connected to the turbidity discharge pipe section. This sludge collection tube 31 is flexibly communicated with an inlet part facing the water surface that can be raised and lowered.

浮渣収集管寞、３１に連通する吸入部翌の詳細を第４図
に示す。第４図において、浮渣収集管３０（３１り分岐
部に可撓伸縮材よりなる例えば蛇腹型の連結管品を接続
し、この連結管記に吸入管翼を接続し、この吸入管ヌの
自由端に、吸入管Ｍに連層する吸入口を開口した浮子３
５を連結する。Details of the suction section communicating with the sludge collection pipe 31 are shown in FIG. In FIG. 4, a bellows-shaped connecting pipe made of flexible elastic material is connected to the branch part of the floating collection pipe 30 (31), a suction pipe blade is connected to this connecting pipe, and a suction pipe blade is connected to this connecting pipe. A float 3 having a suction port connected to the suction pipe M at its free end.
Connect 5.

なお前記流出側ろ材支持壁１６を第３図のように堰板１
６Ａによって形成するときは、種板１６Ａの仰角Ｕを田
°内外にする。Note that the outflow side filter media support wall 16 is connected to the weir plate 1 as shown in FIG.
6A, the elevation angle U of the seed plate 16A is set to be inside or outside of the angle.

前記構成における各部の作用を次に説明する。The operation of each part in the above configuration will be explained next.

原水供給管Ｐから流入する原水は流入Ｐｊｔｕの壁に当
って流入方向を変え流れの勢力が削減されてから流入室
正向を一様に流れて上押する。上昇した原水は流入側ろ
材支持壁１５、粒状ろ過材１７１流出側ろ過材支持壁１
６を通過する間に濁質が除去さ−れた処理水となって処
理水室］４に流入する。The raw water flowing in from the raw water supply pipe P hits the wall of the inlet Pjtu, changes the inflow direction, reduces the force of the flow, and then uniformly flows in the direction of the inlet chamber and pushes upward. The rising raw water flows through the inflow side filter media support wall 15, the granular filter media 171 and the outflow side filter media support wall 1.
6, the suspended solids are removed and the treated water flows into the treated water chamber 4.

しかして流出側ろ材支持壁１６の上部流通間隙から処理
水室１４に高速で流入した処理水は、整流管部の外側を
その下りまで流下迂回して整流ｗ′２６内に流入し、管
内を上昇して上ｒｈｔから処理水回収管氏へ流出する。The treated water flowing into the treated water chamber 14 from the upper flow gap of the outlet side filter media support wall 16 at high speed bypasses the outer side of the rectifier pipe section until its downward direction, flows into the rectifier w'26, and flows inside the pipe. The water rises and flows out from the upper rht to the treated water recovery pipe.

一方流出側ろ材支持稙１６の中央部並びに下部流通間隙
から低速で流入した処理水は、前記上方から流下する高
速の流入処（（１ｉ水と合流して上方から流下する処理
水を減速する。そのために流出側ろ材支持壁訪の上部流
通間隙から処理水室１４に流入する処理水の流入速度が
下段の流入速度によって制限され、粒状ろ過材１７が処
理水室１４に流出するようｆｘｆｆｌＳ分的高速流とな
るのを解消する０ なお従来装置の処理水の流れの状態を第５図に示し、本
発明装置の処理水の流れの状態を第６Ｍ材支持壁を介し
てろ連槽内を原水流入室とろ過室と処理水室とに分け１
処理水室内に処理水流入域よりも下方の位置で開口し、
上方において処理水回収管に連通ずる整流管を設けたこ
とにより、処理水流入域、の上部から流入した処理水と
、処理水流入域の中、下部から流入した処理水とが合流
し整流管の下端を迂回してその中に流入することにより
、流入速度が均等に制御されて部分的に高速で流入する
現象が解消されるので粒状ろ過材力；処理水室に流出す
ることがなくなったのである。On the other hand, the treated water that flows in at low speed from the central part of the outflow-side filter media support stem 16 and the lower flow gap joins with the high-speed inflow water flowing down from above (1i) to decelerate the treated water flowing down from above. Therefore, the inflow speed of the treated water flowing into the treated water chamber 14 from the upper flow gap of the outflow side filter media support wall is limited by the inflow speed of the lower stage, and the Figure 5 shows the flow state of treated water in the conventional device, and the flow state of treated water in the device of the present invention is shown in Figure 5. Divided into inflow chamber, filtration chamber and treated water chamber 1
It opens in the treated water chamber at a position below the treated water inflow area,
By installing a rectifier pipe that communicates with the treated water recovery pipe in the upper part, the treated water flowing in from the upper part of the treated water inflow area and the treated water flowing in from the middle and lower part of the treated water inflow area are merged into the rectifier pipe. By bypassing the lower end and flowing into it, the inflow speed is evenly controlled and the phenomenon of partially high-speed inflow is eliminated. It is.

【図面の簡単な説明】[Brief explanation of drawings]

第１図は従来の重力ろ過装置の断面図、第２図は輻流ろ
過装置の縦断面図１第３図は本発明の一実施例を示す縦
断面図、第４図は吸入口の詳細を示す断面図、第５図は
従来装置の処理水の流入状態を示す要部断面図、第６図
は本発明装置の処理水の流入状態を示す要部断面図であ
る。 Ｕ：ろ堝槽、１２：流入室、］３：ろ過室、１４：処理
水室、１５二流人側ろ肘支持！、１６：流出側ろ材支持
壁、２Ｄ：処理水回収管、２６＝整流管代理人　弁理士
　本　　間　　　　崇 σＵ（σｌ） 第２図 ２ 第　３　図 ２８　２θ′　２り ）　　　１　　　／Fig. 1 is a cross-sectional view of a conventional gravity filtration device, Fig. 2 is a longitudinal cross-sectional view of a radiation filtration device, Fig. 3 is a longitudinal cross-sectional view showing an embodiment of the present invention, and Fig. 4 is a detail of the inlet. FIG. 5 is a cross-sectional view of a main part showing the state of inflow of treated water in a conventional apparatus, and FIG. 6 is a cross-sectional view of a main part showing a state of inflow of treated water in the apparatus of the present invention. U: Filter tank, 12: Inflow chamber, ] 3: Filtration chamber, 14: Treated water chamber, 15 Second-class person's elbow support! , 16: Outflow side filter media support wall, 2D: Treated water recovery pipe, 26 = Rectifier pipe agent Patent attorney Takashi Honma σU (σl) Fig. 2 2 Fig. 3 Fig. 28 2θ' 2) 1 /

Claims (1)

【特許請求の範囲】 肺 複数のほぼ塗直なろ相支持壁を介してろ過槽内に原水流
入室とろ過室と処理水室とを配設した輻流ろ過装置にお
いて、前記処理水室内に、処理水の流入域よりも下方の
位置で開口し、上方において処理水回収管に連通ずる整
流管を設けたことを特徴とする整流管を備えた輻流ろ過
装置。[Scope of Claims] A fluid filtration device in which a raw water inflow chamber, a filtration chamber, and a treated water chamber are arranged in a filtration tank through a plurality of substantially repainted filter phase support walls, in which the treated water chamber includes: 1. A flow filtration device equipped with a rectifier pipe, characterized in that a rectifier pipe is provided that opens at a position below an inflow area of treated water and communicates with a treated water recovery pipe above.