JPH0246243B2 - - Google Patents
Info
- Publication number
- JPH0246243B2 JPH0246243B2 JP60501393A JP50139385A JPH0246243B2 JP H0246243 B2 JPH0246243 B2 JP H0246243B2 JP 60501393 A JP60501393 A JP 60501393A JP 50139385 A JP50139385 A JP 50139385A JP H0246243 B2 JPH0246243 B2 JP H0246243B2
- Authority
- JP
- Japan
- Prior art keywords
- filter cloth
- water
- filter
- filtered
- net
- 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
Links
- 239000004744 fabric Substances 0.000 description 63
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 39
- 238000001914 filtration Methods 0.000 description 12
- 239000007921 spray Substances 0.000 description 9
- 238000000034 method Methods 0.000 description 7
- 239000002699 waste material Substances 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 239000008237 rinsing water Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/01—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/62—Regenerating the filter material in the filter
- B01D29/66—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps
- B01D29/68—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps with backwash arms, shoes or nozzles
- B01D29/682—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps with backwash arms, shoes or nozzles with a rotary movement with respect to the filtering element
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/88—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor having feed or discharge devices
- B01D29/94—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor having feed or discharge devices for discharging the filter cake, e.g. chutes
- B01D29/945—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor having feed or discharge devices for discharging the filter cake, e.g. chutes for continuously discharging concentrated liquid
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtering Materials (AREA)
Description
請求の範囲
１ 周辺より中心にかけて傾斜したフイルタクロ
ス８と、濾過すべき水を周辺から当該フイルタク
ロス８上に送致する手段４と、該フイルタクロス
８の下方で回転するスプレイパイプ９，１０とを
含み、このパイプ９，１０はスプレイ水を上記フ
イルタクロス８を透過させることにより該フイル
タクロス８に付着している汚物を分離してこれを
該フイルタクロス８の下端縁を越えてフイルタの
中心部に設置された排水受器６内に移送せしめる
平面フイルタに於て、上記フイルタクロス８の上
面には濾過中の水の供給を緩やかにし且つフイル
タクロス上面の水の層の厚みを増加するそらせ板
が設けられていることを特徴とする平面フイル
タ。Claim 1 A filter cloth 8 inclined from the periphery to the center, means 4 for sending water to be filtered from the periphery onto the filter cloth 8, and spray pipes 9 and 10 rotating below the filter cloth 8. The pipes 9 and 10 allow the spray water to pass through the filter cloth 8 to separate the dirt adhering to the filter cloth 8 and carry it over the lower edge of the filter cloth 8 to the center of the filter. In the flat filter to be transferred into the waste water receiver 6 installed in the filter cloth 8, a deflector plate is provided on the upper surface of the filter cloth 8 to slow down the supply of water during filtration and increase the thickness of the water layer on the upper surface of the filter cloth. A flat filter characterized by being provided with.
２ フイルタが円形状をなしている特許請求の範
囲第１項に於て、そらせ板が複数のリング１１よ
り構成され、これらリングはフイルタクロス８と
同心状且つ分離して適宜間隔を設置され、動かな
いようにフイルタクロス８の上端に止着されてい
ることを特徴とする平面フイルタ。2. In claim 1, in which the filter has a circular shape, the baffle plate is constituted by a plurality of rings 11, and these rings are arranged concentrically and separately from the filter cloth 8 at appropriate intervals, A flat filter characterized in that it is fixed to the upper end of a filter cloth 8 so as not to move.
３ リング１１はその高さが２〜３mmであること
を特徴とする特許請求の範囲第２項記載の平面フ
イルタ。3. The planar filter according to claim 2, wherein the ring 11 has a height of 2 to 3 mm.
４ リング１１が約５〜50mm間隔で位置している
ことを特徴とする特許請求の範囲第２項もしくは
第３項記載の平面フイルタ。4. The planar filter according to claim 2 or 3, wherein the rings 11 are arranged at intervals of about 5 to 50 mm.
５ そらせ板が１枚のネツト１３、或は一方を他
方の上に重ねた二枚若しくはそれ以上複数枚のネ
ツトよりなり、上記ネツトはフイルタクロス８上
に密とならないよう載置され、動かないようにフ
イルタクロス８の上端に止着されていることを特
徴とする特許請求の範囲第１項記載の平面フイル
タ。5. The deflecting plate consists of one net 13, or two or more nets stacked one on top of the other, and the nets are placed on the filter cloth 8 so as not to be closely spaced and do not move. 2. The flat filter according to claim 1, wherein the flat filter is fixed to the upper end of the filter cloth 8 as shown in FIG.
６ ネツト１３が太さ２〜３mmの糸の織成体から
成ることを特徴とする特許請求の範囲第５項記載
の平面フイルタ。6. The flat filter according to claim 5, wherein the net 13 is made of a woven body of threads having a thickness of 2 to 3 mm.
７ ネツト１３のサイズが約２×２cm〜10×10cm
であることを特徴とする特許請求の範囲第５項も
しくは第６項記載の平面フイルタ。7 Net 13 size is approximately 2 x 2 cm ~ 10 x 10 cm
A flat filter according to claim 5 or 6, characterized in that:
８ 一方が他方の上に重ねられた２枚もしくはそ
れ以上複数枚のネツトが用いられる場合、夫々の
ネツトのサイズが同じかもしくは異なることを特
徴とする特許請求の範囲第５項又は第６項又は第
７項記載の平面フイルタ。8. Claims 5 or 6, characterized in that when two or more nets are used, one layered on top of the other, the sizes of the nets are the same or different. Or the flat filter according to item 7.
明細書
本発明は平面フイルタに関し、この平面フイル
タは周辺より中心にかけて傾斜したフイルタクロ
スと、周辺から当該フイルタクロス上へ濾過中の
水を送る手段と、上記フイルタクロスの下方で回
転するスプレイパイプとより成り、このパイプは
スプレイ水を、上記フイルタクロスを透過させる
ことにより、該クロスに付着せる汚物を分離しこ
の汚物を当該フイルタクロスの下端縁を越えてフ
イルタの中心部に設置された排水受器へ移送する
ように配置されている。Description The present invention relates to a flat filter, which comprises a filter cloth that is inclined from the periphery to the center, a means for sending water being filtered from the periphery onto the filter cloth, and a spray pipe that rotates below the filter cloth. This pipe passes the spray water through the filter cloth to separate the dirt adhering to the filter cloth, and sends this dirt over the lower edge of the filter cloth to a drainage receiver installed in the center of the filter. It is arranged to be transferred to a container.
フイルタクロス上に残留する汚物を分離移送す
るには二つの方法がある。一つの方法では濾過す
べき水がフイルタクロス上に送られると、フイル
タクロスの下端縁を越え排水受器に連続的に流れ
込むようになつており、同時にまた、濾過された
汚物をそれと共に運ぶようになつている。之に代
る方法では、汚物はフイルタクロスより分離さ
れ、適切に配向されたウオータスプレイ手段によ
り濾過中の水が沢山オーバフロウすることなしに
フイルタクロスよりフイルタクロスの下端縁を越
え移送される。前者の方法はフイルタの濾過能に
よつて要求される量より濾過すべき水が多くて余
剰の水の使用が許容されている場合に有効であ
る。しかしながら工業プロセスを経た水の濾過に
はこの方法は許されない、と云うのは濾過は熱を
回収し且つ放出負荷を低減する目的で実施される
からである。この理由により後者方法のみが実用
的である。フイルタクロスを透過する水の流出量
の比率はフイルタクロスのメツシユサイズ、フイ
ルタクロスの全表面積に対するメツシユ面積の比
率及びフイルタクロス上の水の層の厚みに依存す
る。フイルタクロス上の水の供給量及びこれに起
因する該クロス上の水の層の厚みはフイルタクロ
スの下端縁を越える水がなく、濾過されるべき全
ての水がフイルタクロスを通して濾過し得る時間
のある場合に限つてのみ増加され得る。もとより
フイルタクロスのメツシユが細かければ細かい
程、濾過はそれだけ効率的となるが、同時にフイ
ルタクロスを透過する水の流れが遅くなればその
分濾過効率は低下する。 There are two methods for separating and transporting the dirt remaining on the filter cloth. In one method, the water to be filtered is fed over the filter cloth and then flows continuously over the lower edge of the filter cloth into a wastewater receptacle, at the same time carrying the filtered waste with it. It's getting old. In this alternative method, the dirt is separated from the filter cloth and transported by appropriately oriented water spray means from the filter cloth over the lower edge of the filter cloth without significant overflow of the water being filtered. The former method is effective when the amount of water to be filtered is greater than the amount required by the filtration capacity of the filter and the use of the surplus water is permitted. However, this method is not permissible for the filtration of water that has undergone industrial processes, since the filtration is carried out with the purpose of recovering heat and reducing the emission load. For this reason only the latter method is practical. The ratio of the amount of water flowing through the filter cloth depends on the mesh size of the filter cloth, the ratio of the mesh area to the total surface area of the filter cloth, and the thickness of the water layer on the filter cloth. The amount of water supplied on the filter cloth and the resulting thickness of the layer of water on the cloth are such that no water exceeds the lower edge of the filter cloth and all the water to be filtered can be filtered through the filter cloth. It can only be increased in certain cases. Naturally, the finer the mesh of the filter cloth, the more efficient the filtration becomes, but at the same time, if the flow of water passing through the filter cloth becomes slower, the filtration efficiency decreases accordingly.
本発明の目的は、冒頭に述べたタイプの平面フ
イルタで、細かいメツシユフイルタクロスを用い
ながらも、実用目的に充分な濾過効率を持つたも
のを提供するにある。本発明によると、この目的
はフイルタクロス上にそらせ板（baffle）を設け
このそらせ板にて濾過中の水の供給を緩やかにし
水の層の厚みを増大することによつて達成され
る。 SUMMARY OF THE INVENTION An object of the present invention is to provide a flat filter of the type mentioned at the outset, which has sufficient filtration efficiency for practical purposes even though it uses a fine mesh filter cloth. According to the invention, this object is achieved by providing a baffle on the filter cloth which slows down the water supply during filtration and increases the thickness of the water layer.
本発明の一実施例によると、円形状の平面フイ
ルタ内で、そらせ板は同心的且つフイルタクロス
とは分離して適当な間隔をもつて配置された複数
個のリングによつて構成されていて、このリング
はフイルタクロスの上端に止着され動かないよう
にされている。この例ではリングは望ましくは数
mmの高さとされ約５〜10cmの間隔に配置されてい
る。 According to one embodiment of the present invention, within the circular plane filter, the baffle plate is constituted by a plurality of rings arranged concentrically and separated from the filter cloth at appropriate intervals. , this ring is fixed to the upper end of the filter cloth to prevent it from moving. In this example the ring is preferably a number
They are approximately 5 to 10 cm high and placed at intervals of approximately 5 to 10 cm.
本発明の別の実施例ではそらせ板は１枚のネツ
トもしくは一方を他方の上に重ね合わせてなる２
枚もしくはそれ以上の複数枚のネツトで、これら
ネツトはフイルタクロスの上面に置かれフイルタ
クロスの上端に動かないように止着されている。
ネツトは望ましくは糸の織物でその厚みが数（２
〜３）mmのものが良く、適当なメツシユサイズは
約２×２cm乃至10×10cmである。一方を他方の上
に重ね合わせた２枚もしくはそれ以上の複数のネ
ツトの場合は、望ましくはこれらネツトを違つた
メツシユサイズのものとするのが良い。 In another embodiment of the invention, the baffle plates are made of one net or two stacked one on top of the other.
These nets are placed on the upper surface of the filter cloth and fixed to the upper end of the filter cloth so as not to move.
The net is preferably a woven yarn fabric whose thickness is several (2).
~3) mm is preferable, and suitable mesh sizes are approximately 2 x 2 cm to 10 x 10 cm. In the case of two or more nets stacked one on top of the other, the nets are preferably of different mesh sizes.
以下に本発明を添付図面にもとづいて更に詳述
するに、図に於て、第１図は平面フイルタの線図
的縦断面図、第２図は本発明の一実施例の平面フ
イルタの平面図、第３図は他の実施例の第２図同
様図である。 The present invention will be described in more detail below based on the accompanying drawings, in which FIG. 1 is a diagrammatic longitudinal sectional view of a flat filter, and FIG. 2 is a plan view of a flat filter according to an embodiment of the present invention. FIG. 3 is a diagram similar to FIG. 2 of another embodiment.
本発明の平面フイルタは容器１を含み、この容
器１は望ましくは円形状をなして、リング状仕切
２及び３によつて３つの区劃、即ち、濾過される
べき水を受容する環状の最外区劃４、濾過水を収
容する環状の中間区劃５及び最内側の円筒状区
劃、即ち、排水受器６に分割されている。濾過さ
れるべき水はパイプ７を経て最外側の環状区劃４
に入れられる。中間の環状の区劃５の上部にはフ
イルタクロス８が設けられて、このクロス８は適
当な方法で水平レベルに対し小さな角度で内側に
傾斜するように支持されている。フイルタクロス
８の下には回転パイプ９があり、こゝからスプレ
イパイプ１０が分岐され、このパイプ１０はフイ
ルタクロスを透過して水を噴射してフイルタクロ
スに停溜している濾過水よりの汚物を離脱し、こ
の汚物をフイルタクロスの内側下端縁を越えて排
水受器６内に送致するもので、この排水受器６よ
り汚物はすゝぎ水によつて図外のドレインパイプ
を経て除去される。濾過水は図外の一本のパイプ
により区劃５から当面の使用の個所に導かれる。 The planar filter of the invention comprises a container 1, preferably of circular shape, divided into three compartments by ring-shaped partitions 2 and 3, namely an annular top receiving the water to be filtered. It is divided into an outer section 4, an annular middle section 5 for storing filtered water, and an innermost cylindrical section, that is, a drainage receiver 6. The water to be filtered passes through the pipe 7 to the outermost annular section 4.
can be placed in At the top of the intermediate annular section 5 a filter cloth 8 is provided, which cloth 8 is supported in a suitable manner so as to be inclined inwards at a small angle with respect to the horizontal level. There is a rotating pipe 9 below the filter cloth 8, from which a spray pipe 10 is branched, and this pipe 10 sprays water that passes through the filter cloth to remove water from the filtered water that has accumulated in the filter cloth. This removes the filth and sends this filth over the inner lower edge of the filter cloth into the drainage receiver 6. From this drainage receiver 6, the filth is removed by rinsing water through a drain pipe (not shown). be done. The filtered water is led from the compartment 5 to the point of immediate use by a pipe not shown.
濾過されるべき水は環状区劃４からフイルタク
ロス８上に流れ、その供給割合はフイルタクロス
の内側下端縁に上記水が達する以前に全ての濾過
されるべき水がフイルタクロスを通過するように
調整される。細かなメツシユのフイルタクロスを
備えたフイルタの濾過能率を増大するために、本
発明ではフイルタクロスの上部にそらせ板が設け
られて水の供給を緩やかにすると共に水の層の厚
みを増大するようになつている。 The water to be filtered flows from the annular section 4 onto the filter cloth 8, and the supply rate is such that all the water to be filtered passes through the filter cloth before the water reaches the inner lower edge of the filter cloth. be adjusted. In order to increase the filtration efficiency of a filter with a fine mesh filter cloth, the present invention provides a baffle plate on the top of the filter cloth to slow down the water supply and increase the thickness of the water layer. It's getting old.
第２図の実施例ではこのそらせ板はフイルタク
ロスに同心的でフイルタクロス８上に密とならな
いよう載置したリング１１よりなり、このリング
は一例として、厚み２〜４mm、高さ２〜10mmの軽
量なプラスチツクの細長小片より得られる。図で
は条（細線）の幾ばくかをもつてこのリングを示
している。リング１１は適当な間隔、例えば５〜
50cm間隔に配置され適当な間隔で放射状に配され
た条部材１２によつて、リング１１が水の流れを
受けても所定位置に残り得るようにフイルタクロ
スの外縁に止着される。リングによつて濾過を受
けている水はリングの背後に於て流れをさえぎら
れ（堰止められて）給水割合は減少しフイルタク
ロス上の水の層の厚みが増大する、その結果、水
は細かいメツシユフイルタクロスを通過し易くな
り濾過能力も夫々増大する。しかし、リング１１
は軽量の故、スプレイパイプ９から送られてくる
水のスプレイによる汚物の離脱を阻害したり、水
をフイルタクロス８の下端縁へ送致しこの下端縁
を越えて排水受器６内へ導くことを妨害すること
はない。 In the embodiment shown in FIG. 2, this deflecting plate is composed of a ring 11 that is concentric with the filter cloth and placed on the filter cloth 8 so as not to be densely packed, and this ring has a thickness of 2 to 4 mm and a height of 2 to 10 mm, for example. Obtained from lightweight plastic strips. The figure shows this ring with some stripes (thin lines). The rings 11 are spaced at appropriate intervals, e.g.
Rings 11 are secured to the outer edge of the filter cloth by means of strips 12 arranged radially at appropriate intervals, 50 cm apart, so that they remain in place even when subjected to water flow. The water being filtered by the ring is blocked (dammed) behind the ring, reducing the water supply rate and increasing the thickness of the water layer on the filter cloth. It becomes easier to pass through the fine mesh filter cloth, and the filtration capacity increases. However, ring 11
Because it is lightweight, it prevents the separation of waste from the spray of water sent from the spray pipe 9, and it also prevents the water from being sent to the lower edge of the filter cloth 8 and leads it into the drainage receiver 6 beyond this lower edge. will not interfere.
第３図は本発明の極めて簡単な代替実施例を示
す。この実施例に於ては、フイルタクロス８上に
一枚のネツト１３が密とならないように載置され
ている。ネツトは部分のみを図示してある。この
ネツトは弾力性があり軽量な糸より織られたもの
で数mm厚み、一例として２〜４mmの厚みである。
このネツトのメツシユサイズは例えば約２×２cm
〜10×10cmである。このネツトは適切な方法によ
りフイルタクロス８上縁に所定位に固定されるよ
う止着される。ネツト１３はリング１１による上
述の働きと同様なせき止め作用をなすために細か
なメツシユフイルタクロスを備えた平面フイルタ
の濾過能力は著しく増大する。実用試験によれ
ば、フイルタクロスのメツシユが65μｍの場合、
５×５cmサイズのネツトで濾過能力は概ね３倍と
なつた。１枚のネツトの上に他のネツトを重ねた
２枚のネツトで下のネツトサイズが３×３cm、上
のネツトサイズが６×６cmのものを用いた場合
は、平均45μｍのメツシユを有するフイルタクロ
スで良好な結果が得られた。 FIG. 3 shows a very simple alternative embodiment of the invention. In this embodiment, a single net 13 is placed on the filter cloth 8 so as not to be densely packed. Only a portion of the net is shown. This net is woven from elastic and lightweight threads and is several mm thick, for example 2 to 4 mm thick.
For example, the mesh size of this net is approximately 2 x 2 cm.
~10x10cm. This net is secured to the upper edge of the filter cloth 8 in a predetermined position by an appropriate method. Since the net 13 has a damming effect similar to the above-mentioned function of the ring 11, the filtration capacity of a plane filter equipped with a fine mesh filter cloth is significantly increased. According to practical tests, when the mesh of the filter cloth is 65μm,
The filtration capacity was roughly tripled with the 5 x 5 cm size net. If two nets are used, with one net layered on top of another, with the bottom net size 3 x 3 cm and the top net size 6 x 6 cm, a filter with an average mesh size of 45 μm will be used. Good results were obtained with the cross.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI841314 | 1984-04-02 | ||
| FI841314A FI69250C (en) | 1984-04-02 | 1984-04-02 | PLANFILTER |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61500954A JPS61500954A (en) | 1986-05-15 |
| JPH0246243B2 true JPH0246243B2 (en) | 1990-10-15 |
Family
ID=8518843
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60501393A Granted JPS61500954A (en) | 1984-04-02 | 1985-03-29 | plane filter |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JPS61500954A (en) |
| BR (1) | BR8507175A (en) |
| FI (1) | FI69250C (en) |
| WO (1) | WO1985004340A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5259955A (en) * | 1991-07-10 | 1993-11-09 | Bolton Joseph A | Vacuum strainer |
| US5425876A (en) * | 1993-10-25 | 1995-06-20 | Claude Laval Corporation | Gravity screen filter with dynamic backwash |
| US5453193A (en) * | 1994-01-04 | 1995-09-26 | Thermo Fibertek Inc. | Strainer |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI49680C (en) * | 1973-10-24 | 1975-09-10 | Aarne Ellilae | Device with circular plane filter. |
-
1984
- 1984-04-02 FI FI841314A patent/FI69250C/en not_active IP Right Cessation
-
1985
- 1985-03-29 WO PCT/FI1985/000032 patent/WO1985004340A1/en not_active Application Discontinuation
- 1985-03-29 JP JP60501393A patent/JPS61500954A/en active Granted
- 1985-03-29 BR BR8507175A patent/BR8507175A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| FI69250C (en) | 1986-01-10 |
| FI69250B (en) | 1985-09-30 |
| BR8507175A (en) | 1987-07-14 |
| JPS61500954A (en) | 1986-05-15 |
| FI841314A (en) | 1985-10-03 |
| WO1985004340A1 (en) | 1985-10-10 |
| FI841314A0 (en) | 1984-04-02 |
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