JP3989944B1

JP3989944B1 - Filtration device

Info

Publication number: JP3989944B1
Application number: JP2006344912A
Authority: JP
Inventors: 均太田
Original assignee: Toflo Corp
Current assignee: Toflo Corp
Priority date: 2006-12-21
Filing date: 2006-12-21
Publication date: 2007-10-10
Anticipated expiration: 2026-12-21
Also published as: JP2008155096A

Abstract

【課題】濾過材の取扱性に優れ、コンパクトな機器構成で濾過材の汚れ面の洗浄を可能とした濾過装置とこれに用いられる濾過用金属積層板を提供すること、及び、濾過材の組立・分解作業性の向上、濾過材の製造工程の簡略化、濾過材の再利用を図れるようにした濾過装置とこれに用いられる濾過用金属積層板を提供する。
【解決手段】外筒４内に筒状の濾過材５が収容され、濾過材５の内側に原水供給口部２Ａが連通し、その濾過材５の外側に濾過液排出口部３Ａが連通し、原水供給口部２Ａから濾過材５の内側へ原水が圧送され、濾過材５の内側から外側へ原水を通過させることにより、濾過材５の内周面で原水中の固形物が捕獲保持されるようにする。
【選択図】図２An object of the present invention is to provide a filtration device that is excellent in handling of filter media and that can clean a dirty surface of the filter media with a compact device configuration, and a metal laminate plate for filtration used therefor, and assembling the filter media Provided is a filtration device capable of improving the disassembling workability, simplifying the production process of the filter material, and reusing the filter material, and a metal laminate plate for filtration used therefor.
SOLUTION: A cylindrical filter medium 5 is accommodated in an outer cylinder 4, a raw water supply port 2A communicates with the inside of the filter medium 5, and a filtrate discharge port 3A communicates with the outside of the filter medium 5. The raw water is pumped from the raw water supply port 2 A to the inside of the filter medium 5, and the raw water is passed from the inside to the outside of the filter medium 5, whereby solids in the raw water are captured and held on the inner peripheral surface of the filter medium 5. So that
[Selection] Figure 2

Description

本発明は、化学、食品、機械加工、電気機器製造などの工場廃水処理や排水リサイクル時の固形物除去工程、銭湯、プールなどの清澄濾過、プレコート濾過等、各種用途に使用される濾過装置に関する。
The present invention relates to a filtration device used for various applications such as factory wastewater treatment such as chemical, food, machining, and electrical equipment manufacturing, solid matter removal process during wastewater recycling, clarification filtration of public baths, pools, precoat filtration, etc. .

汚濁水等の原水を濾過する装置としては、例えば、特許文献１、２に記載された濾過装置が知られている。 As a device for filtering raw water such as polluted water, for example, filtration devices described in Patent Documents 1 and 2 are known.

特許文献１の濾過装置は、原水を濾過する濾過材として、レーヨンまたはコットン等の素材を糸巻状にした筒状のフィルター（８ａ）を備え、フィルター（８ａ）の外周面側から内周面側へ向って原水を浸透させることによって濾過する構成になっている（同文献１の段落０００４参照）。カッコ内の符号は特許文献１で用いられている符号である。 The filtration device of Patent Document 1 includes a cylindrical filter (8a) made of a material such as rayon or cotton as a filter material for filtering raw water, and from the outer peripheral surface side to the inner peripheral surface side of the filter (8a). In this configuration, the raw water is infiltrated into the water and filtered (see paragraph 0004 of the same document 1). The code in parentheses is the code used in Patent Document 1.

特許文献２の濾過装置は、原水を濾過する濾過材として、印刷によって形成したスペーサ（４）付きの濾体用円板（１）を複数積層した構造の濾体（７）を備え（図１ないし図３参照）、その濾体（７）の外周面側から内周面側へ向って原水を浸透させることによって濾過する構成になっている（同文献の段落００５１参照）。カッコ内の符号は特許文献２で用いられている符号である。 The filter device of Patent Document 2 includes a filter body (7) having a structure in which a plurality of filter discs (1) with spacers (4) formed by printing are stacked as a filter medium for filtering raw water (FIG. 1). Moreover, it is the structure which filters by making a raw | natural water osmose | permeate toward the inner peripheral surface side from the outer peripheral surface side of the filter body (7) (refer Paragraph 0051 of the same literature). The code in parentheses is the code used in Patent Document 2.

しかしながら、前記特許文献１、２の濾過装置によると、いずれも濾過材の外周面側から内周面側へ原水を浸透させて濾過する構成であるので、濾過材の外周面が原水中の固形物の付着によって汚れることは避けられず、濾過材を取り出すときに作業者が汚れ面に接触しやすく、濾過材の取扱性が悪いという問題点がある。また、この特許文献１、２の濾過装置によると、濾過材の外周面が汚れるから、これをシャワー洗浄する場合は、濾過材の外周面を囲む大きなリング状のシャワーノズルを用いるか、あるいは、濾過材の外周面に沿ってシャワーノズルを旋回させるための大掛かりな移動機構が必要となり、装置全体が大型になるという問題点もある。 However, according to the filtration devices of Patent Documents 1 and 2, since both are configured to permeate the raw water from the outer peripheral surface side of the filter material to the inner peripheral surface and filter, the outer peripheral surface of the filter material is solid in the raw water. It is unavoidable to get dirty due to the adhesion of an object, and there is a problem that the operator easily comes into contact with the dirty surface when taking out the filter medium, and the handleability of the filter medium is poor. In addition, according to the filtering device of Patent Documents 1 and 2, since the outer peripheral surface of the filter medium is contaminated, when shower cleaning this, use a large ring-shaped shower nozzle surrounding the outer peripheral surface of the filter medium, or There is also a problem that a large moving mechanism for turning the shower nozzle along the outer peripheral surface of the filter medium is required, and the entire apparatus becomes large.

さらに、特許文献２の濾体（７）は、積層される濾体用円板（１）の枚数が多く、その多数の濾体用円板（１）のボルト挿通孔（６）にボルト（１１）を挿通させて固定する構造であるため、組立・分解の作業性が悪い。しかも、その濾体用円板（１）は、上記のようなボルト挿通孔（６）を備えた円板（２）をプレス成形した後、その円板（２）の表面に印刷でスペーサ（４）を形成しなければならず、プレス成形工程と印刷工程という２つの工程が必要となり、工程数が多く、簡単に製造することはできない。 Furthermore, the filter body (7) of Patent Document 2 has a large number of filter disk disks (1) to be laminated, and bolts (6) are inserted into the bolt insertion holes (6) of the large number of filter disk disks (1). 11) Since the structure is inserted and fixed, assembly / disassembly workability is poor. Moreover, the filter disc (1) is formed by press-molding the disc (2) having the bolt insertion holes (6) as described above, and then printing the spacer (2) on the surface of the disc (2). 4) must be formed, and two processes, a press molding process and a printing process, are required, and the number of processes is large, and it cannot be easily manufactured.

また、特許文献１のフィルタのような糸巻状の濾過材は、糸を一本一本解きほぐして完全に分解洗浄することが殆ど不可能であり、糸と糸の間に捕獲保持された固形物を完全に取り除くことができないため、再利用ができず、産業廃棄物として処理されているのが実情である。 In addition, the pincushion-shaped filter material such as the filter of Patent Document 1 is almost impossible to unravel the yarns one by one and completely disassemble and wash them, and the solid matter captured and held between the yarns. Since it cannot be completely removed, it cannot be reused and is treated as industrial waste.

その他、濾過材として微細な砂を用いる砂濾過装置や濾過材を焼結金属で形成した濾過装置なども知られている。しかしながら、焼結金属からなる濾過材は金属粒どうしが互いに焼結しているから、その分解洗浄は不可能であり、また微細な砂からなる濾過材もその微細な砂の洗浄が困難であり、これらの濾過材の内部には捕獲保持された固形物が残存するため、これらの濾過材も再利用ができず、産業廃棄物として埋立て処理されるのが実情である。 In addition, a sand filtering device using fine sand as a filtering material, a filtering device in which the filtering material is formed of sintered metal, and the like are also known. However, since the filter media made of sintered metal have metal particles sintered together, it is impossible to disassemble and clean the filter media, and the filter media made of fine sand is difficult to wash the fine sand. Since the solid matter captured and retained remains in these filter media, these filter media cannot be reused and are actually landfilled as industrial waste.

特開平９−７５６１４号公報JP-A-9-75614

特開２００３−２１０９１６号公報JP 2003-210916 A

本発明は前記問題点を解決するためになされたもので、その目的とするところは、濾過材の取扱性に優れ、コンパクトな機器構成で濾過材の汚れ面の洗浄を可能とした濾過装置を提供すること、及び、濾過材の組立・分解作業性の向上、濾過材の製造工程の簡略化、濾過材の再利用を図れるようにした濾過装置を提供することにある。
The present invention has been made to solve the above problems, and an object, excellent handling properties of the filter material, possible with the filtering device cleaning dirt surface of the filtering material in a compact device configuration An object of the present invention is to provide a filtration device that can improve the assembly / disassembly workability of the filter medium, simplify the manufacturing process of the filter medium, and reuse the filter medium.

前記目的を達成するために、本発明の濾過装置は、上端部外周面にフランジ（４Ａ）を有する外筒（４）と、前記フランジ（４Ａ）の上面にシール部材（１５）を介して着脱自在に取り付けられたフランジ部品（１４）と、前記外筒の内側下部に設けけられている仕切り板（１２）と、前記外筒内に収容される複数の筒状の濾過材（５）と、前記濾過材の内側に連通する原水供給口部（２Ｂ）と、前記濾過材の外側に連通する濾過液排出口部（３Ａ、３Ｂ）と、を有し、前記各濾過材（５）は、前記フランジ部品（１４）の装着孔（１４Ａ）にシール部材（１５）を介して着脱自在に装着されるとともに、短パイプ（９Ｂ）の一端外周面にフランジ（９Ｃ）を形成してなる上部固定パーツ（９）と、前記仕切り板（１２）の装着孔（１２Ａ）にシール部材（１５）を介して着脱自在に装着されるとともに、短パイプ（７Ｂ）の一端外周面にフランジ（７Ｃ）を形成してなる下部固定パーツ（７）と、前記上部固定パーツ（９）と下部固定パーツ（７）との間に積層して配置されるとともに、片面に複数の濾過溝（６Ａ）を有し、外周縁に切欠き（６Ｂ）を有する複数の環状の金属積層板（６）と、前記各金属積層板（６）をその積層方向に固定するための締結ボルト（８）と、を具備し、前記上部固定パーツ（９）が、前記最上段の金属積層板（６）の上に配置され、前記金属積層板（６）の切欠き（６Ｂ）が、前記締結ボルト（８）の外周面に当接し、前記締結ボルト（８）の下端ネジ部（８Ａ）が、前記下部固定パーツ（７）のフランジ（７Ｃ）に形成されたネジ孔（７Ａ）に取り付けられ、前記締結ボルト（８）の上端ネジ部（８Ｂ）が、前記上部固定パーツ（９）のフランジ（９Ｃ）に形成された貫通孔（９Ａ）に挿通され、前記貫通孔（９Ａ）から突出した前記締結ボルト（８）の上端ネジ部（８Ｂ）にナット（１０）を取り付け締め付けることにより、前記各金属積層板（６）がその積層方向に固定されてなり、前記原水供給口部（２Ｂ）は、両端外周面にフランジ（１６Ａ、１６Ｂ）を形成してなる短パイプ（１６Ｃ）に横向きに突出形成され、その短パイプ（１６Ｃ）内から前記各濾過材（５）側へ原水を分配供給するとともに、前記両端外周面のフランジのうち、下端外周面のフランジ（１６Ｂ）が前記フランジ部品（１４）の上面に着脱自在に取り付けられ、この取り付け状態で、その下端外周面のフランジ（１６Ｂ）の内側部が前記濾過材（５）の上部固定パーツ（９）の上面外周部に乗るように配置されることを特徴とする。 In order to achieve the above object, the filtration device of the present invention includes an outer cylinder (4) having a flange (4A) on the outer peripheral surface of the upper end portion , and an attachment / detachment to the upper surface of the flange (4A) via a seal member (15). and freely mounted flange part (14), and said outer cylinder partition plate being kicked provided inside the bottom (12), a plurality of tubular filtering material contained in the outer tube (5) , and the raw water supply port that communicates with the inside of the filtering material (2B), wherein the filtrate outlet portion communicating with the outside of the filtering material (3A, 3B), have, each filtering member (5) The upper part formed by detachably mounting the mounting hole (14A) of the flange part (14) through the seal member (15) and forming a flange (9C) on one end outer peripheral surface of the short pipe (9B). Fixing parts (9) and mounting holes (12A) for the partition plate (12) A lower fixing part (7) which is detachably mounted via a seal member (15) and has a flange (7C) formed on one outer peripheral surface of the short pipe (7B), and the upper fixing part (9) And a plurality of annular metal laminates having a plurality of filtration grooves (6A) on one side and a notch (6B) on the outer periphery. 6) and fastening bolts (8) for fixing the metal laminate plates (6) in the lamination direction, and the upper fixing part (9) is the uppermost metal laminate plate (6). ), The notch (6B) of the metal laminate (6) is in contact with the outer peripheral surface of the fastening bolt (8), and the lower end screw portion (8A) of the fastening bolt (8) is In the screw hole (7A) formed in the flange (7C) of the lower fixing part (7) The upper end screw portion (8B) of the fastening bolt (8) is inserted into a through hole (9A) formed in a flange (9C) of the upper fixing part (9), and the through hole (9A) The metal laminate plate (6) is fixed in the stacking direction by attaching and tightening the nut (10) to the upper end thread portion (8B) of the fastening bolt (8) protruding from the raw water supply port portion. (2B) is formed so as to project laterally from a short pipe (16C) formed with flanges (16A, 16B) on the outer peripheral surfaces of both ends, and raw water is fed from the inside of the short pipe (16C) to the respective filter media (5). The flange (16B) at the lower end outer peripheral surface of the flanges at the both end outer peripheral surfaces is detachably attached to the upper surface of the flange component (14). The inside of the lunge (16B) is disposed so as to ride on the outer periphery of the upper surface of the upper fixing part (9) of the filter medium (5) .

前記本発明の濾過装置において、前記濾過溝は、前記金属積層板の内側から外側に向って下り勾配の傾斜を有する構成を採用してもよい。 In the filtration device of the present invention, the filtration groove may have a downward slope from the inside to the outside of the metal laminate.

前記本発明の濾過装置は、例えば、前記濾過材を洗浄する洗浄手段を備え、前記洗浄手段は、洗浄液を噴出するシャワーノズルと、前記濾過材の内側で前記シャワーノズルを移動させる移動手段と、前記シャワーノズルに洗浄液を供給する供給パイプとからなり、前記シャワーノズルからの噴射洗浄液によって前記濾過材の内周面をシャワー洗浄するように構成してもよい。 The filtering device of the present invention includes, for example, a cleaning unit that cleans the filter material, the cleaning unit spraying a cleaning liquid, and a moving unit that moves the shower nozzle inside the filter material, It may comprise a supply pipe for supplying a cleaning liquid to the shower nozzle, and the inner peripheral surface of the filter medium may be configured to be shower-washed with a jet cleaning liquid from the shower nozzle.

前記本発明の濾過装置は、例えば、前記濾過材を洗浄する洗浄手段を備え、前記洗浄手段は、前記濾過材の一端部から内側に向って超音波を出力し、濾過材の内周面を超音波洗浄するように構成することもできる。 The filtering device of the present invention includes, for example, a cleaning unit that cleans the filter material, and the cleaning unit outputs an ultrasonic wave from one end portion of the filter material to the inside, and the inner peripheral surface of the filter material. It can also be configured to perform ultrasonic cleaning.

前記濾過溝は、鍛造により形成された深さ１０μｍの溝からなるものとしてよい。 The filtration groove may be a groove having a depth of 10 μm formed by forging.

本発明によると、前記の通り、濾過材の内側から外側へ原水を通過させ、濾過材の内周面で原水中の固形物を捕獲保持する構成を採用したため、濾過材の内周面が汚れ面となるから、作業者が汚れ面に接触し難く、濾過材の取扱性に優れる。また、洗浄すべき汚れ面は濾過材の内周面であるから、例えば濾過材の内側で移動できる小型のシャワーノズルを用いるだけで汚れ面の洗浄が可能であり、コンパクトな機器構成で濾過材の汚れ面を洗浄できるという作用効果が得られる。 According to the present invention, as described above, since the raw water is passed from the inner side to the outer side of the filter medium and the solid material is captured and held on the inner peripheral surface of the filter medium, the inner peripheral surface of the filter medium is contaminated. Since it becomes a surface, it is difficult for the operator to contact the dirty surface, and the handling property of the filter medium is excellent. In addition, since the dirty surface to be cleaned is the inner peripheral surface of the filter medium, for example, the dirty surface can be cleaned simply by using a small shower nozzle that can move inside the filter medium. The effect that the dirty surface can be cleaned is obtained.

特に、本発明のうち、濾過材の具体的構成として、片面に濾過溝を形成した環状の金属積層板を用いる構成のものにあっては、鍛造・プレスだけで濾過溝付きの金属積層板を製造できるから、濾過材の製造工程の簡略化を図れる。 In particular, in the present invention, as a specific configuration of the filter material, in a configuration using an annular metal laminate having a filtration groove formed on one side, a metal laminate with a filtration groove is formed only by forging and pressing. Since it can manufacture, the manufacturing process of a filter medium can be simplified.

また、かかる濾過材の具体的構成として、金属積層板の外周縁に切欠きを設けたものにあっては、切欠きを締結ボルトに当接させるだけで各積層板が径方向に位置決めされ、その締結ボルトによって各積層板を積層方向に固定できるから、濾過材の組立作業性に優れる。また、その締結ボルトを緩めれば、各金属積層板の切欠きと締結ボルトとの当接も緩くなり、各金属積層板が一枚ずつの単体に分離可能となるから、濾過材の分解作業性にも優れる。さらに、この濾過材はその最小単位である一枚の金属積層板まで完全に分解できるから、濾過材中に含まれている固形物のすべてを完全分解洗浄で除去することが可能であり、濾過材の再利用を図るのに好適である。 Further, as a specific configuration of such a filter medium, in the case where a notch is provided on the outer peripheral edge of the metal laminate plate, each laminate plate is positioned in the radial direction simply by bringing the notch into contact with the fastening bolt, Since each laminated board can be fixed in the laminating direction by the fastening bolt, the assembling workability of the filter medium is excellent. Also, if the fastening bolts are loosened, the notch of each metal laminate plate and the contact between the fastening bolts will be loosened, and each metal laminate plate can be separated into a single piece. Excellent in properties. Furthermore, since this filter medium can be completely decomposed down to the single metal laminate, which is the smallest unit, it is possible to remove all solids contained in the filter medium by complete decomposition cleaning. It is suitable for reusing the material.

以下、本発明を実施するための最良の形態について、添付した図面を参照しながら詳細に説明する。 Hereinafter, the best mode for carrying out the present invention will be described in detail with reference to the accompanying drawings.

図１は本発明の一実施形態である濾過装置の正面部分断面図、図２は図１の濾過装置の拡大図、図３は図１の濾過装置の濾過材の分解図、図４は図１の濾過装置における洗浄動作の説明図、図５は図１の濾過装置の濾過材を構成する金属積層板の説明図である。 1 is a front partial cross-sectional view of a filtration device according to an embodiment of the present invention, FIG. 2 is an enlarged view of the filtration device of FIG. 1, FIG. 3 is an exploded view of the filtration material of the filtration device of FIG. FIG. 5 is an explanatory view of a metal laminate constituting a filter medium of the filtration device of FIG. 1.

本実施形態の濾過装置１は、図１、図２のように原水供給口部２Ａ、２Ｂと濾過液排出口部３Ａ、３Ｂを有する円筒状の外筒４内に円筒状の濾過材５を縦置きに収容した構造になっている。尚、図１、図２では濾過材５を１台しか示していないが、外筒４内にはその中心軸線周りに等間隔で３台の濾過材５が収容されている。濾過材の収容台数は必要に応じて適宜変更することができ、１台でもよく、３台以上であってもよい。 As shown in FIGS. 1 and 2, the filtration device 1 of the present embodiment includes a cylindrical filter medium 5 in a cylindrical outer cylinder 4 having raw water supply ports 2 A and 2 B and filtrate discharge ports 3 A and 3 B. The structure is housed vertically. Although only one filter medium 5 is shown in FIGS. 1 and 2, three filter media 5 are accommodated in the outer cylinder 4 at equal intervals around the central axis. The number of filter media accommodated can be appropriately changed as necessary, and may be one or three or more.

原水供給口部２Ａ、２Ｂは、外筒４の上下方向２箇所に設けられ、濾過材５の内側に連通し、図示しないポンプから圧送された原水（被濾過液）を濾過材５の内側へ圧送供給する。また、濾過液排出口部３Ａ、３Ｂも、外筒４の上下方向２箇所に設けられ、濾過材５の外側に連通し、濾過材５の内側から外側へ浸透流出した濾過液、すなわち濾過された原水を外部へ排出する。 The raw water supply ports 2 A and 2 B are provided at two locations in the vertical direction of the outer cylinder 4, communicate with the inside of the filter medium 5, and feed raw water (liquid to be filtered) pumped from a pump (not shown) into the filter medium 5. Supply by pressure. Further, the filtrate discharge ports 3A and 3B are also provided at two locations in the vertical direction of the outer cylinder 4, communicated with the outside of the filter medium 5, and filtered or permeated out of the filter medium 5 from the inside to the outside, that is, filtered. The raw water is discharged to the outside.

図２に示したように、前記円筒状の濾過材５は、図５（ａ）に示す環状の金属積層板６を図３（ａ）（ｂ）のように下部固定パーツ７上に複数積み重ねた構造である。下部固定パーツ７のネジ孔７Ａに締結ボルト８の下端ネジ部８Ａが取り付けられ、同締結ボルト８の上端ネジ部８Ｂが最上段の金属積層板６上に置かれた上部固定パーツ９を貫通するように設けられている。さらに、この貫通した上端ネジ部８Ｂにナット１０を取り付け所定の力で締め付けることによって、前記のように積層された複数の金属積層板６はその積層方向に締め付け固定されるようになっている。 As shown in FIG. 2, the cylindrical filter medium 5 is formed by stacking a plurality of annular metal laminated plates 6 shown in FIG. 5 (a) on the lower fixing part 7 as shown in FIGS. 3 (a) and 3 (b). Structure. The lower end screw portion 8A of the fastening bolt 8 is attached to the screw hole 7A of the lower fixing part 7, and the upper end screw portion 8B of the fastening bolt 8 passes through the upper fixing part 9 placed on the uppermost metal laminated plate 6. It is provided as follows. Further, by attaching a nut 10 to the penetrating upper end screw portion 8B and tightening with a predetermined force, the plurality of metal laminated plates 6 laminated as described above are fastened and fixed in the laminating direction.

また、図５（ａ）のように金属積層板６の外周縁には切欠き６Ｂが設けられており、この切欠き６Ｂが図５（ｃ）のように金属積層板６の積層方向に連なって一の係合溝１１を形成し、この係合溝１１に前記締結ボルト８の外周面が当接することによって、いずれの金属積層板６も同じように径方向に位置決めされるようになっている。 Further, as shown in FIG. 5 (a), a notch 6B is provided on the outer peripheral edge of the metal laminate 6 and this notch 6B continues in the lamination direction of the metal laminate 6 as shown in FIG. 5 (c). 1 is formed, and the outer peripheral surface of the fastening bolt 8 is brought into contact with the engagement groove 11 so that any of the metal laminated plates 6 is similarly positioned in the radial direction. Yes.

図３（ａ）（ｂ）に示したように、前記下部固定パーツ７は、濾過材５の内径と略同じ内径の短パイプ７Ｂの一端外周面にフランジ７Ｃを形成し、そのフランジ面に前記締結ボルト８の下端ネジ部８Ａを取り付けるネジ孔７Ａを形成した構造であって、かつ、外筒５の内側下部に設けられている仕切り板１２の装着孔にシール部材１３を介して着脱自在に取り付けられる（図２参照）。 As shown in FIGS. 3 (a) and 3 (b), the lower fixing part 7 has a flange 7C formed on the outer peripheral surface of one end of a short pipe 7B having an inner diameter substantially the same as the inner diameter of the filter medium 5, and the flange surface The screw hole 7A for attaching the lower end screw portion 8A of the fastening bolt 8 is formed, and is detachably attached to the mounting hole of the partition plate 12 provided at the inner lower portion of the outer cylinder 5 via the seal member 13. It is attached (see FIG. 2).

また、この下部固定パーツ７は、その短パイプ７Ｂの内側が濾過材５の内側と外筒４下部の原水供給口部２Ａとに連通し、原水供給口部２Ａから圧送されてきた原水を濾過材５の内側へ導く手段としての機能も有する。 Further, the lower fixing part 7 has an inner side of the short pipe 7B communicating with the inner side of the filter medium 5 and the raw water supply port 2A at the lower part of the outer cylinder 4, and filters the raw water fed from the raw water supply port 2A. It also has a function as a means for guiding the inside of the material 5.

前記上部固定パーツ９は、濾過材５の内径より少し小径の短パイプ９Ｂの一端外周面にフランジ９Ｃを形成し、そのフランジ面に前記締結ボルト８の上端ネジ部８Ｂを挿通させるための貫通孔９Ａを形成した構造であって、外筒４の上端部に取り付けられたフランジ部品１４の装着孔にシール部材１５を介して着脱自在に取り付けられる。 The upper fixing part 9 is formed with a flange 9C on one outer peripheral surface of a short pipe 9B having a diameter slightly smaller than the inner diameter of the filter medium 5, and a through-hole for allowing the upper end threaded portion 8B of the fastening bolt 8 to be inserted through the flange surface. 9A is formed, and is detachably attached to the mounting hole of the flange component 14 attached to the upper end portion of the outer cylinder 4 via the seal member 15.

また、この上部固定パーツ９は、その短パイプ９Ｂの内側が濾過材５の内側と外筒４上部の原水供給口部２Ｂとに連通し、原水供給口部２Ｂから圧送されてきた原水を濾過材５の内側へ導く手段としての機能も有する。 The upper fixing part 9 has an inner side of the short pipe 9B communicating with the inner side of the filter medium 5 and the raw water supply port 2B above the outer cylinder 4, and filters the raw water fed from the raw water supply port 2B. It also has a function as a means for guiding the inside of the material 5.

図１に示したように、前記外筒４下部の原水供給口部２Ａは外筒４に一体形成されているが、外筒４上部の原水供給口部２Ｂは外筒４の上端部側に着脱自在に別途追加できるモジュールとして構成されている。 As shown in FIG. 1, the raw water supply port 2 A at the lower part of the outer cylinder 4 is integrally formed with the outer cylinder 4, but the raw water supply port 2 B at the upper part of the outer cylinder 4 is on the upper end side of the outer cylinder 4. It is configured as a module that can be added detachably.

このモジュール（以下「原水供給口追加モジュール１６」という）は、両端外周面にフランジ１６Ａ、１６Ｂを形成した短パイプ１６Ｃに原水供給口部２Ｂを横向きに突出形成し、その下端側フランジ１６Ｂが外筒４上端部の前記フランジ部品１４に着脱自在に取り付けられる構造になっている。The module (hereinafter referred to as "raw water supply port additional modules 16"), the flange 16A across an outer peripheral surface, 16B and the protruding raw water supply port 2 B sideways the short pipe 16C formed, its lower end flange 16B It is structured to be detachably attached to the flange part 14 at the upper end of the outer cylinder 4.

図５（ａ）のように前記各金属積層板６はその片面のみに複数の濾過溝６Ｂが放射状に設けられ、その反対面はフラット面になっており、いずれの濾過溝６Ｂも図５（ｂ）のように金属積層板６の内側から外側に向って下り勾配の傾斜を有している。 As shown in FIG. 5 (a), each of the metal laminate plates 6 is provided with a plurality of filtration grooves 6B radially only on one surface thereof, and the opposite surface thereof is a flat surface. As shown in b), the metal laminate 6 has a downward slope from the inside to the outside.

本実施形態では、固形物の付着による濾過溝６Ｂの閉塞を防止し、濾過溝６Ｂの吐けをよくする観点等から、前記のように傾斜した濾過溝６Ａを採用したが、濾過溝６Ａは傾斜のないフラットな溝でもよい。 In the present embodiment, the filtration groove 6A that is inclined as described above is employed from the viewpoint of preventing the filtration groove 6B from being blocked due to adhesion of solids and improving the discharge of the filtration groove 6B, but the filtration groove 6A is inclined. It may be a flat groove without any.

本実施形態の濾過装置１では、一つの目安として１０μ以上の固形物を濾過材の内側面に捕獲保持するために、濾過溝６Ａの深さは金属積層板６の内側位置で約１０μｍ、外側位置で約２０μｍとなるように構成したが、その深さも必要に応じて適宜変更することができる。以上のような深さの濾過溝６Ａは鍛造により金属積層板６の片面のみに形成できることが本出願人によって実証されている。 In the filtration device 1 of the present embodiment, as a guide, in order to capture and hold a solid matter of 10 μm or more on the inner surface of the filter medium, the depth of the filtration groove 6A is about 10 μm at the inner position of the metal laminate 6 and the outer side. Although it is configured to be approximately 20 μm at the position, the depth can be appropriately changed as necessary. It has been proved by the present applicant that the filtration groove 6A having such a depth can be formed only on one side of the metal laminate 6 by forging.

また、本実施形態の濾過装置１は濾過材５を洗浄する手段を備えており、この洗浄手段は外筒４の上端部側に着脱自在に別途追加できる洗浄モジュール１７として構成されている。 Moreover, the filtration apparatus 1 of this embodiment is provided with a means for washing the filtering material 5, and this washing means is configured as a washing module 17 that can be detachably added to the upper end side of the outer cylinder 4.

洗浄モジュール１７は、洗浄液を噴出するシャワーノズル１７Ａと、シャワーノズル１７Ａを濾過の内側で往復移動させる移動手段としてのシリンダ装置１７Ｂと、シャワーノズル１７Ａに洗浄液を供給する供給パイプ１７Ｃとにより構成されている。 The cleaning module 17 includes a shower nozzle 17A that ejects cleaning liquid, a cylinder device 17B as a moving unit that reciprocates the shower nozzle 17A inside the filtration, and a supply pipe 17C that supplies the cleaning liquid to the shower nozzle 17A. Yes.

前記シリンダ装置１７Ｂによって昇降する昇降ロッド１７Ｄの先端部に、フレーム１７Ｅを介して供給パイプ１７Ｃが取り付けられ、この供給パイプ１７Ｃの先端部に、シャワーノズル１７Ａが装着されている。そして、昇降ロッド１７Ｄの昇降動作によって当該シャワーノズル１７Ａは、図１のように濾過材５の上端から下端までの間を往復移動し、シャワーノズル１７Ａから噴射される洗浄液によって濾過材５の内周面がシャワー洗浄される。 A supply pipe 17C is attached via a frame 17E to the tip of a lifting rod 17D that is raised and lowered by the cylinder device 17B, and a shower nozzle 17A is attached to the tip of the supply pipe 17C. Then, the shower nozzle 17A moves back and forth between the upper end and the lower end of the filter medium 5 as shown in FIG. 1 by the lifting and lowering operation of the lifting rod 17D, and the inner periphery of the filter medium 5 is washed by the cleaning liquid sprayed from the shower nozzle 17A. The face is shower cleaned.

次に、上記の如く構成された本実施形態の濾過装置の動作について、図１、２、４を基に説明する。 Next, the operation of the filtration device of the present embodiment configured as described above will be described with reference to FIGS.

尚、以下の動作説明においては、図１のように、外筒４上部の原水供給口部２Ｂと濾過液排出口部３Ｂはそれぞれの蓋部材（図示省略）で閉鎖する。また、外筒４下部の原水供給口部２Ａと濾過液排出口部３Ａとにそれぞれバルブ１９Ａ、１９Ｂを取り付ける。 In the following description of the operation, as shown in FIG. 1, the raw water supply port 2 B and the filtrate discharge port 3 B at the top of the outer cylinder 4 are closed by respective lid members (not shown). Valves 19A and 19B are attached to the raw water supply port 2A and the filtrate discharge port 3A at the lower part of the outer cylinder 4, respectively.

そして、バルブ１９Ａの開放によって外筒４下部の原水供給口部２Ａから外筒４内へ原水を圧送供給し、バルブ１９Ｂの開放によって外筒４下部の濾過液排出口３Ａから外部へ濾過液が排出されるものとする。また、原水の濾過が行われるとき、シャワーノズル１７Ａは図１の２点破線で示すように濾過材５の内側から上方へ逃げて待機しているようにする。 When the valve 19A is opened, the raw water is pumped and supplied from the raw water supply port 2A at the lower part of the outer cylinder 4 into the outer cylinder 4, and when the valve 19B is opened, the filtrate is discharged from the filtrate outlet 3A at the lower part of the outer cylinder 4 to the outside. Shall be discharged. When raw water is filtered, the shower nozzle 17A escapes upward from the inside of the filter medium 5 and stands by as indicated by a two-dot broken line in FIG.

本濾過装置１の場合、図２のように原水供給口部２Ａから外筒４内に圧送供給された原水は、その供給圧力によって下部固定パーツ７の短パイプ７Ｂ内を通って濾過材５の内側へ流入し、各金属積層板６の濾過溝６Ｂを通って濾過材５の外側へ浸透流出する。 In the case of the present filtration device 1, the raw water that is pressure-fed and supplied from the raw water supply port 2 A into the outer cylinder 4 as shown in FIG. 2 passes through the short pipe 7 B of the lower fixing part 7 by the supply pressure. It flows into the inside, passes through the filtration groove 6B of each metal laminate 6 and permeates out to the outside of the filter medium 5.

このとき、原水中の固形物で１０μｍ以上のものは、濾過溝６Ａを通過できず、原水の供給圧力によって濾過材５の内側に捕獲保持され、固形物のケーキ５０（図４参照）を形成する。ケーキ形成後は、原水が当該ケーキ５０中を通過することにより濾過される、いわゆるケーキ濾過作用により、１０μｍより微細なサブμｍの固形物も濾過できる効果が生じる。 At this time, solids of 10 μm or more in the raw water cannot pass through the filtration groove 6A and are captured and held inside the filter medium 5 by the supply pressure of the raw water to form a solid cake 50 (see FIG. 4). To do. After the formation of the cake, the raw water is filtered by passing through the cake 50, so that a so-called cake filtration action has an effect of filtering a solid having a sub-μm finer than 10 μm.

濾過材５の内側に蓄積された固形物のケーキ厚が所定値以上になると、装置の濾過能力が低下するため、濾過材５の内側をシャワー洗浄する。 When the cake thickness of the solid matter accumulated inside the filter medium 5 becomes a predetermined value or more, the filtration capacity of the apparatus is lowered, so the inside of the filter medium 5 is washed by shower.

シャワー洗浄時は、原水供給口部２Ａと濾過液排出口部３Ｂのバルブ１９Ａ、１９Ｂを双方とも閉じ、シリンダ装置１７Ｂによってシャワーノズル１７Ａを図４のように濾過材５の上端部から下端部に向って下降させながらシャワーノズル１７Ａから洗浄液を噴出させ、濾過材５の内側に固着した固形物を洗浄液のシャワーで洗い流す。 At the time of shower cleaning, both the valves 19A and 19B of the raw water supply port 2A and the filtrate discharge port 3B are closed, and the shower nozzle 17A is moved from the upper end to the lower end of the filter medium 5 by the cylinder device 17B as shown in FIG. While being lowered, the cleaning liquid is ejected from the shower nozzle 17 A, and the solid matter fixed inside the filter medium 5 is washed away with the shower of the cleaning liquid.

このとき、原水の供給圧力がなくなるので、濾過材５の内側から自然に脱落する固形物もあり、自然脱落した固形物や洗浄液で洗い流された固形物は、濾過材５の下端部から下部固定パーツ７の短パイプ７Ｂ内を通って外筒４底部の洗浄液排出口部２０へ至り、バルブ２０の開放によって洗浄液排出口部２１から外部へ排出される。 At this time, since the supply pressure of the raw water is lost, there is also a solid matter that naturally falls off from the inside of the filter medium 5, and the solid substance that has fallen off naturally or the solid substance washed away with the cleaning liquid is fixed to the lower part from the lower end of the filter medium 5. It passes through the short pipe 7B of the part 7 to reach the cleaning liquid discharge port 20 at the bottom of the outer cylinder 4, and is discharged from the cleaning liquid discharge port 21 to the outside by opening the valve 20.

尚、前記のように蓋部材で閉鎖した外筒４上部の原水供給口部２Ｂと濾過液排出口部３Ｂを使用する場合も前記と同様の動作によって原水の濾過が行われるため、その詳細説明は省略する。どの原水供給口部と濾過液排出口部を使用するかの選択は必要に応じてユーザが決定すればよい。 Even when the raw water supply port 2B and the filtrate discharge port 3B at the upper part of the outer cylinder 4 closed by the lid member as described above are used, the raw water is filtered by the same operation as described above. Is omitted. Selection of which raw water supply port and filtrate discharge port to use may be determined by the user as necessary.

本実施形態の濾過装置１を構成する濾過材５を分解する場合は、はじめに、図１に示す原水供給口追加モジュール１６と洗浄モジュール１７を取り外し（図２参照）、外筒４の上端部に取り付けられているフランジ部品１４を取り外し、外筒４の上端部側から濾過材５を引き抜き、図３（ａ）のように外部に取り出す。 When disassembling the filter medium 5 constituting the filtration device 1 of the present embodiment, first, the raw water supply port addition module 16 and the cleaning module 17 shown in FIG. 1 are removed (see FIG. 2), and the upper end of the outer cylinder 4 is removed. The attached flange part 14 is removed, the filter medium 5 is pulled out from the upper end side of the outer cylinder 4 and taken out to the outside as shown in FIG.

そして、ナット１０を外して締結ボルト８を緩めれば、金属積層板６の締め付け固定力がなくなり、締結ボルト８と各金属積層板６の切欠き６Ｂとの当接も緩くなるため、下部固定パーツ７上に積み上げられている複数の金属積層板６はそれぞれが一枚ずつの単体に分離可能となる。 If the nut 10 is removed and the fastening bolt 8 is loosened, the tightening fixing force of the metal laminate 6 is lost, and the contact between the fastening bolt 8 and the notch 6B of each metal laminate 6 is also loosened. The plurality of metal laminates 6 stacked on the part 7 can be separated into a single piece.

濾過材５を組立てる場合は、初めに、図３（ｂ）のように分解されている締結ボルト８を下部固定パーツ７のネジ孔７Ａに差し込み、次に図５（ｃ）のように金属積層板６の切欠き６Ｂを締結ボルト８の外周面に当接させながら金属積層板６を下部固定パーツ７上に積み上げて行く。 When the filter medium 5 is assembled, first, the fastening bolt 8 disassembled as shown in FIG. 3 (b) is inserted into the screw hole 7A of the lower fixing part 7, and then the metal layer is laminated as shown in FIG. 5 (c). The metal laminated plate 6 is stacked on the lower fixing part 7 while the notch 6B of the plate 6 is brought into contact with the outer peripheral surface of the fastening bolt 8.

そして最後に、図３（ａ）のように、最上段の金属積層板６上に上部固定パーツ９を載せ、その貫通孔９Ａに締結ボルト８の上端ネジ部８Ｂを挿通させた後、この上端ネジ部８Ｂにナット１０を締め付ければ、各金属積層板６が積層方向に締め付け固定され、濾過材５の組立が完了する。 Finally, as shown in FIG. 3A, the upper fixing part 9 is placed on the uppermost metal laminate 6 and the upper end threaded portion 8B of the fastening bolt 8 is inserted into the through hole 9A. If the nut 10 is fastened to the screw portion 8B, each metal laminated plate 6 is fastened and fixed in the laminating direction, and the assembly of the filter medium 5 is completed.

前記実施形態の濾過装置１では、金属積層板６の外周縁の２箇所に切欠き６Ｂを形成したが（図３（ａ）参照）、切欠き６Ｂの個数は必要に応じて適宜変更することができる。また図３のように、２箇所に切欠き６Ｂを形成した場合には積層時に２つの係合溝１１が形成され、それぞれの係合溝１１に締結ボルト８が１本ずつ当接し、２本の締結ボルト８で金属積層板６の径方向が位置決めされるようになる。 In the filtration device 1 of the above embodiment, the notches 6B are formed at two locations on the outer peripheral edge of the metal laminate 6 (see FIG. 3A), but the number of the notches 6B is appropriately changed as necessary. Can do. Further, as shown in FIG. 3, when the notches 6B are formed at two locations, two engaging grooves 11 are formed at the time of stacking, and one fastening bolt 8 is brought into contact with each engaging groove 11 one by one. The fastening bolts 8 position the radial direction of the metal laminate 6.

前記実施形態の濾過装置１では、濾過材５の内周面をシャワー洗浄する構成を採用したが、これに代わる他の洗浄手段として、図１の洗浄モジュール１７を超音波装置とし、濾過材５の一端部から内側に向って超音波を出力することにより、濾過材５の内周面を超音波洗浄するように構成することもできる。 In the filtering device 1 of the above embodiment, the configuration in which the inner peripheral surface of the filter medium 5 is shower-washed is adopted. However, as another cleaning means instead of this, the cleaning module 17 of FIG. The inner peripheral surface of the filter medium 5 can also be configured to be ultrasonically cleaned by outputting ultrasonic waves from one end of the filter toward the inside.

以上説明した実施形態の濾過装置１によると、濾過材５の内側から外側へ原水を通過させ、濾過材５の内周面で原水中の固形物を捕獲保持する構成を採用したため、濾過材５の内周面が汚れ面となるから、作業者が汚れ面に接触し難く、濾過材の取扱性に優れる。また、洗浄すべき汚れ面は濾過材５の内周面であるから、濾過材５の内側で移動できる小型のシャワーノズル１７Ａを用いるだけで汚れ面の洗浄が可能であり、コンパクトな機器構成で濾過材５の汚れ面の洗浄できる。 According to the filtration device 1 of the embodiment described above, since the raw water is passed from the inside to the outside of the filter medium 5 and the solid material in the raw water is captured and held on the inner peripheral surface of the filter medium 5, the filter medium 5 is used. Since the inner peripheral surface of the filter becomes a dirty surface, it is difficult for the operator to contact the dirty surface, and the filter medium is easy to handle. Further, since the dirty surface to be cleaned is the inner peripheral surface of the filter medium 5, the dirty surface can be cleaned only by using a small shower nozzle 17A that can be moved inside the filter medium 5, and has a compact device configuration. The dirty surface of the filter medium 5 can be cleaned.

さらに、本実施形態の濾過材５は、片面に濾過溝６Ａを形成した環状の金属積層板６を用いる構成を採用しており、この種の濾過溝６Ａ付きの金属積層板６は鍛造・プレスだけで製造できるから、濾過材の製造工程の簡略化を図れる。 Furthermore, the filter medium 5 of the present embodiment employs a configuration using an annular metal laminated plate 6 in which a filtration groove 6A is formed on one side, and this type of metal laminated plate 6 with the filtration groove 6A is forged and pressed. Therefore, it is possible to simplify the manufacturing process of the filter medium.

本実施形態の濾過材５にあっては、金属積層板６の外周縁に切欠き６Ｂを設けた構成を採用したため、その切欠き６Ｂを締結ボルト８に当接させるだけで各金属積層板６が径方向に位置決めされ、締結ボルト８によって各金属積層板６を積層方向に固定できるから、濾過材の組立作業性にも優れる。 In the filter medium 5 of this embodiment, since the structure which provided the notch 6B in the outer periphery of the metal laminated board 6 was employ | adopted, each metal laminated board 6 is made to contact | abut the notch 6B to the fastening bolt 8 only. Are positioned in the radial direction, and the metal laminated plates 6 can be fixed in the laminating direction by the fastening bolts 8, so that the assembling workability of the filter medium is also excellent.

また、その締結ボルト８を緩めれば、各金属積層板６の切欠き６Ｂと締結ボルト８との当接も緩くなり、各金属積層板６が一枚ずつの単体に分離可能となるから、濾過材の分解作業性にも優れる。 Further, if the fastening bolt 8 is loosened, the contact between the notch 6B of each metal laminate plate 6 and the fastening bolt 8 is also loosened, and each metal laminate plate 6 can be separated into a single piece. Excellent workability for disassembling filter media.

さらに、この濾過材５はその最小単位である一枚の金属積層板６まで完全に分解できるから、濾過材５中に含まれている固形物のすべてを完全分解洗浄によって除去することが可能であり、濾過材の再利用を図るのに好適であって、濾過材を産業廃棄物として処理する必要がないという利点もある。 Further, since the filter medium 5 can be completely decomposed up to the single metal laminated plate 6 which is the minimum unit, it is possible to completely remove all the solid substances contained in the filter medium 5 by cleaning. There is also an advantage that it is suitable for reusing the filter medium, and it is not necessary to treat the filter medium as industrial waste.

本発明の一実施形態である濾過装置の正面部分断面図。The front fragmentary sectional view of the filtration apparatus which is one Embodiment of this invention. 図１の濾過装置の拡大図。The enlarged view of the filtration apparatus of FIG. 図３は図１の濾過装置の濾過材の説明図であり、（ａ）は濾過装置から濾過材を外部に取り出した状態の正面断面図、（ｂ）は濾過材を分解した状態の正面図である。FIG. 3 is an explanatory view of the filter medium of the filter device of FIG. 1, (a) is a front sectional view of a state in which the filter medium is taken out from the filter device, and (b) is a front view of a state in which the filter medium is disassembled. It is. 図１の濾過装置における洗浄動作の説明図であり、図中、中心線の右側は洗浄開始時、左側は洗浄途中の状態を示したものである。It is explanatory drawing of the washing | cleaning operation | movement in the filtration apparatus of FIG. 1, In the figure, the right side of a center line shows the state in the middle of washing | cleaning at the time of the start of washing | cleaning. 図５は図１の濾過装置の濾過材を構成する金属積層板の説明図であり、（ａ）は金属金属積層板の平面図、（ｂ）金属積層板を積み重ねた状態でのｂ−ｂ線断面図、（ｃ）は金属金属積層板を積み重ねた状態でのｃ−ｃ線断面図である。FIG. 5 is an explanatory view of a metal laminate plate constituting the filter medium of the filtration device of FIG. 1, (a) is a plan view of the metal metal laminate plate, (b) bb in a state where the metal laminate plates are stacked. Line sectional drawing, (c) is a cc line sectional view in the state where the metal metal lamination board was piled up.

Explanation of symbols

１濾過装置
２Ａ、２Ｂ原水供給口部
３Ａ、３Ｂ濾過液排出口部
４外筒
５濾過材
６金属積層板
６Ａ濾過溝
６Ｂ切欠き
７下部固定パーツ
７Ａネジ孔
７Ｂ短パイプ
７Ｃフランジ
８締結ボルト
８Ａ締結ボルトの下端ネジ部
８Ｂ締結ボルトの上端ネジ部
９上部固定パーツ
９Ａ貫通孔
９Ｂ短パイプ
９Ｃフランジ
１０ナット
１１係合溝
１２仕切り板
１３シール部材
１４フランジ部品
１５シール部材
１６原水供給口追加モジュール
１６Ａ、１６Ｂフランジ
１６Ｃ短パイプ
１７洗浄モジュール
１７Ａシャワーノズル
１７Ｂシリンダ装置
１７Ｃ供給パイプ
１７Ｄ昇降ロッド
１７Ｅフレーム
１９Ａ、１９Ｂバルブ
２０バルブ
２１洗浄液排出口部
５０ケーキ DESCRIPTION OF SYMBOLS 1 Filtration apparatus 2A, 2B Raw water supply port part 3A, 3B Filtrate discharge port part 4 Outer cylinder 5 Filter material 6 Metal laminated plate 6A Filtration groove 6B Notch 7 Lower fixing part 7A Screw hole 7B Short pipe 7C Flange 8 Fastening bolt 8A Lower end screw portion 8B of the fastening bolt 9 Upper screw portion 9 of the fastening bolt 9 Upper fixing part 9A Through hole 9B Short pipe 9C Flange 10 Nut 11 Engaging groove 12 Partition plate 13 Seal member 14 Flange part 15 Seal member 16 Raw water supply port additional module 16A , 16B Flange 16C Short pipe 17 Cleaning module 17A Shower nozzle 17B Cylinder device 17C Supply pipe 17D Lifting rod 17E Frame 19A, 19B Valve 20 Valve 21 Cleaning liquid discharge port 50 Cake

Claims

An outer cylinder (4) having a flange (4A) on the outer peripheral surface of the upper end ,
A flange part (14) removably attached to the upper surface of the flange (4A) via a seal member (15) ;
Partition plates are set only being inside the lower portion of the outer cylinder (12),
A plurality of tubular filter media (5) housed in the outer cylinder;
Raw water supply port that communicates with the inside of the filtering material and (2B),
A filtrate outlet (3A, 3B) communicating with the outside of the filter medium ;
Each of the filter media (5)
An upper fixing formed by detachably mounting the mounting hole (14A) of the flange part (14) via a seal member (15) and forming a flange (9C) on one outer peripheral surface of the short pipe (9B). Parts (9),
A lower fixing formed by detachably mounting the mounting plate (12A) of the partition plate (12) through a seal member (15) and forming a flange (7C) on one outer peripheral surface of the short pipe (7B). Parts (7),
A plurality of layers are disposed between the upper fixing part (9) and the lower fixing part (7) and have a plurality of filtration grooves (6A) on one side and a notch (6B) on the outer periphery. An annular metal laminate (6) of
A fastening bolt (8) for fixing each metal laminate (6) in the lamination direction;
The upper fixing part (9) is disposed on the uppermost metal laminate (6),
The notch of the metal laminate (6) (6B) is brought into contact with the outer peripheral surface of the fastening bolt (8),
The lower end screw part (8A) of the fastening bolt (8) is attached to the screw hole (7A) formed in the flange (7C) of the lower fixing part (7),
An upper end threaded portion (8B) of the fastening bolt (8) is inserted into a through hole (9A) formed in a flange (9C) of the upper fixing part (9),
Each metal laminated plate (6) is fixed in the stacking direction by attaching and tightening a nut (10) to an upper end screw portion (8B) of the fastening bolt (8) protruding from the through hole (9A). ,
The raw water supply port (2B)
A short pipe (16C) formed with flanges (16A, 16B) on the outer peripheral surfaces at both ends is formed to project laterally, and raw water is distributed and supplied from the inside of the short pipe (16C) to the filter media (5) side. Of the flanges on the outer peripheral surfaces of the both ends, the flange (16B) on the lower end outer peripheral surface is detachably attached to the upper surface of the flange component (14), and in this attached state, on the inner side of the flange (16B) on the lower end outer peripheral surface The filter device is arranged such that the portion is placed on the outer peripheral portion of the upper surface of the upper fixing part (9) of the filter medium (5) .

The filtration device according to claim 1, wherein the filtration groove has a downward slope from the inside to the outside of the metal laminate.

The filtration device includes a cleaning means for cleaning the filter medium,
The cleaning means includes
A shower nozzle that ejects cleaning liquid;
Moving means for moving the shower nozzle inside the filter medium;
A supply pipe for supplying a cleaning liquid to the shower nozzle,
The filtration device according to claim 1, wherein the inner peripheral surface of the filter medium is shower-washed with a jet cleaning liquid from the shower nozzle.

The filtration device includes a cleaning means for cleaning the filter medium,
3. The filtration according to claim 1, wherein the cleaning unit outputs an ultrasonic wave inward from one end of the filter medium, and ultrasonically cleans an inner peripheral surface of the filter medium. apparatus.