JP2834240B2 - Automatic backwash filtration machine - Google Patents
Automatic backwash filtration machineInfo
- Publication number
- JP2834240B2 JP2834240B2 JP1326138A JP32613889A JP2834240B2 JP 2834240 B2 JP2834240 B2 JP 2834240B2 JP 1326138 A JP1326138 A JP 1326138A JP 32613889 A JP32613889 A JP 32613889A JP 2834240 B2 JP2834240 B2 JP 2834240B2
- Authority
- JP
- Japan
- Prior art keywords
- filtration
- filter
- backwash
- cartridge
- fluid
- 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 - Fee Related
Links
- 238000001914 filtration Methods 0.000 title claims description 139
- 239000012530 fluid Substances 0.000 claims description 36
- 125000006850 spacer group Chemical group 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 2
- 239000007787 solid Substances 0.000 description 28
- 238000011001 backwashing Methods 0.000 description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 21
- 230000002093 peripheral effect Effects 0.000 description 15
- 239000007788 liquid Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 3
- 239000011550 stock solution Substances 0.000 description 3
- 239000004743 Polypropylene Substances 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- -1 polypropylene Polymers 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 238000005352 clarification Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- 239000002349 well water Substances 0.000 description 1
- 235000020681 well water Nutrition 0.000 description 1
Landscapes
- Filtration Of Liquid (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、循環冷却水、河川水、海水、洗浄水、井戸
水、廃水、汚水、乳剤、各種プロセス液等の種々の流体
中に含有されている固形物を除去する濾過機に係り、特
に、濾過を中断することなく濾過カートリッジに堆積し
た固形物を逆洗により取り除くことのできる自動逆洗濾
過機に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention is contained in various fluids such as circulating cooling water, river water, seawater, washing water, well water, wastewater, sewage, emulsion, and various process liquids. The present invention relates to a filter for removing solid matter, and more particularly to an automatic backwash filter capable of removing solid matter deposited on a filtration cartridge by backwashing without interrupting filtration.
まず、この種の逆洗可能な濾過機に使用される従来の
濾過カートリッジを第６図により説明する。First, a conventional filtration cartridge used in this type of backwashable filter will be described with reference to FIG.
第６図において、符号１は、いわゆるウェッジワイヤ
方式と称される濾過カートリッジを示すものであり、こ
の濾過カートリッジ１は、水平面内に位置する断面三角
形状でかつ円環状の同形の複数の濾過部材2,2…を鉛直
方向に延在する接結ロッド３により相互に微小間隔を隔
てるように配設したものである。In FIG. 6, reference numeral 1 denotes a so-called wedge-wire type filter cartridge. The filter cartridge 1 includes a plurality of filter members having a triangular cross-section and an annular shape having the same shape and located in a horizontal plane. Are arranged so as to be spaced apart from each other by a connecting rod 3 extending in the vertical direction.
また、前記濾過部材２と形状を異にする断面円形状の
同形の複数の濾過部材4,4…を同じく相互に微小間隔を
隔てるように配設した第７図に示すものも従来から知ら
れている。FIG. 7 in which a plurality of filter members 4, 4... Having a circular cross section and the same shape different in shape from the filter member 2 are arranged at a very small interval from each other is also conventionally known. ing.
前述した第６図のものにおいては、外側から内側へま
たは内側から外側へ流体を通過させることにより、濾過
部材2,2間の各間隙を通過しえない固形物を捕捉して流
体から除去することができる。In the above-mentioned FIG. 6, by passing the fluid from the outside to the inside or from the inside to the outside, solids that cannot pass through the gaps between the filtering members 2, 2 are captured and removed from the fluid. be able to.
また、第７図のものにおいても、いずれかの方向へ流
体を通過させることにより、濾過部材4,4間の各間隙を
通過しえない固形物を捕捉して流体から除去することが
できる。Also, in FIG. 7, by allowing the fluid to pass in either direction, solids that cannot pass through the gaps between the filtering members 4, 4 can be captured and removed from the fluid.
しかしながら、前述した第６図、第７図のものにおい
ては、濾過時と、この過時と逆方向に流体を通過させ
て、各濾過部材2,4に堆積している固形物を除去する逆
洗時とにおいて、各濾過部材2,2間あるいは各濾過部材
4,4間の間隙をあらかじめ小さく設定しておき、濾過時
に固形物を良好に除去しようとすると、逆洗時に固形物
を確実に除去することができないし、一方、各濾過部材
2,2間あるいは各濾過部材4,4間の間隙をあらかじめ大き
く設定しておき、逆洗時に固形物を良好に取り除こうと
すると、濾過時に除去できる範囲の固形物の粒径が大き
くなってしまい、流体の十分な清澄化を達成することが
できない。However, in the case of FIGS. 6 and 7 described above, backwashing is performed in which a fluid is passed in the direction opposite to the time of filtration and in the direction opposite to the time of filtration to remove solid matter deposited on each of the filtering members 2 and 4. Sometimes, between each filter member 2, 2 or each filter member
If the gap between 4 and 4 is set to be small in advance, and solids are to be satisfactorily removed at the time of filtration, solids cannot be reliably removed at the time of backwashing.
If the gap between 2,2 or each filtration member 4,4 is set large beforehand and solids are to be satisfactorily removed at the time of backwashing, the particle size of the solids that can be removed at the time of filtration becomes large. , Sufficient clarification of the fluid cannot be achieved.
特に、毛髪や長い寸法の糸くず等は濾過部材2,4にか
らまりやすく、各濾過部材2,2間あるいは各濾過部材4,4
間の間隙を濾過時と逆洗時とで変化させることのできな
い従来のものにおいては、このような毛髪や糸くず等は
取り除きにくく、このため、このような毛髪や糸くず等
が含まれる可能性のある流体の濾過機においては、濾過
時間に対し逆洗時間を長くして毛髪等を確実に取り除か
なければならず、このため実質的な濾過時間が短かくな
り、濾過効率が悪いという問題点があった。In particular, hair and long lint are easily entangled with the filtering members 2 and 4, and between the filtering members 2 and 2 or between the filtering members 4 and 4.
In the conventional type in which the gap between the filter and the backwash cannot be changed between the time of filtration and the time of backwash, such hair or lint is difficult to remove, and therefore, such hair or lint may be included. In a filter for a fluid having a property, the backwashing time must be longer than the filtration time so that hair and the like must be surely removed, so that the actual filtration time is shortened and the filtration efficiency is poor. There was a point.
本発明は、このような従来のものにおける問題点を克
服し、濾過時より逆洗時の濾過部材間の間隙を大きくし
て、濾過時には流体中の固形物を良好に除去できるとと
もに、逆洗時には濾過部材に堆積あるいはからまった固
形物を良好に取り除くことができ、しかも、濾過時に一
部の濾過カートリッジの逆洗を同時に行なって実質的な
濾過時間を長くできるようにした自動逆洗濾過機を提供
することを目的とする。The present invention overcomes such problems in the conventional art, and makes it possible to increase the gap between filtration members at the time of backwashing rather than at the time of filtration so that solids in a fluid can be removed favorably at the time of filtration. Automatic backwash filtration that sometimes removes solid matter accumulated or entangled on the filter member, and at the same time, backwashes some of the filtration cartridges at the same time during filtration to extend the actual filtration time. The purpose is to provide a machine.
前述した目的を達成するため本発明に係る自動逆洗濾
過機は、円環状に形成され一方の表面に円錐台形の凹部
を有するとともに他方の表面にスペーサが突設された複
数枚の第１濾過部材と、平板円環状に形成された複数枚
の第２濾過部材とを交互に重積して濾過カートリッジを
形成し、複数の前記濾過カートリッジを回転可能な支持
部材に円周状に支持し、前記濾過カートリッジの少なく
ともひとつを外側から内側へ流体が流通する逆洗位置に
対向せしめるとともに、他の濾過カートリッジを内側か
ら外側へ流体が流通する濾過位置に対向せしめるように
前記支持部材を連続回転または所定角度ずつ間歇回転せ
しめる駆動手段を設けたことを特徴としている。In order to achieve the above-mentioned object, an automatic backwash filter according to the present invention comprises a plurality of first filtration filters each having a circular shape, having a truncated conical recess on one surface and a spacer protruding on the other surface. A member and a plurality of second filtration members formed in a flat plate annular shape are alternately stacked to form a filtration cartridge, and the plurality of filtration cartridges are circumferentially supported by a rotatable support member, Continuously rotating or supporting the support member so that at least one of the filtration cartridges is opposed to the backwash position where the fluid flows from the outside to the inside, and the other filtration cartridge is opposed to the filtration position where the fluid flows from the inside to the outside. A drive means for intermittently rotating by a predetermined angle is provided.
なお、第１濾過部材のスペーサの高さは0.02〜1mmの
範囲が好適で、また、第２濾過部材のショアＤ硬度は50
〜80の範囲が好適である。The height of the spacer of the first filter member is preferably in the range of 0.02 to 1 mm, and the Shore D hardness of the second filter member is 50 mm.
A range of ~ 80 is preferred.
前述した構成からなる本発明によれば、濾過カートリ
ッジの内側から外側に流体が流通する濾過時には、平板
円環状の第２濾過部材は自然状態を維持し、この第２濾
過部材上に第１濾過部材のスペーサが着座することにな
り、これにより、このスペーサの高さに相当する間隙が
両濾過部材間に形成されることになる。According to the present invention having the above-described configuration, at the time of filtration in which the fluid flows from the inside to the outside of the filtration cartridge, the flat annular second filtration member maintains a natural state, and the first filtration member is placed on the second filtration member. The spacer of the member will be seated, so that a gap corresponding to the height of the spacer will be formed between the two filtering members.
これに対し、濾過カートリッジの外側から内側に流体
が流通する逆洗時には、流体圧により第２濾過部材が振
動して第１濾過部材の凹部の表面に沿うように撓み、こ
れにより第１濾過部材のスペーサが第２濾過部材から離
間する大きさの間隙が両濾過部材間に形成されることに
なる。On the other hand, at the time of backwashing in which the fluid flows from the outside to the inside of the filtration cartridge, the second filtration member vibrates due to the fluid pressure and bends along the surface of the concave portion of the first filtration member, thereby forming the first filtration member. A gap having a size such that the spacer is separated from the second filtering member is formed between the two filtering members.
このように、濾過時には、両濾過部材間の間隙が狭い
ので、流体内の固形物を堆積して除去することができ
る。また、逆洗時には、両濾過部材間の間隙が広いの
で、濾過時、間隙に喰い込んだ固形物や毛髪等の取り除
きにくい固形物も確実に取り除くことができる。As described above, at the time of filtration, since the gap between the two filtration members is narrow, solid matter in the fluid can be deposited and removed. Further, at the time of backwashing, since the gap between the two filtering members is wide, it is possible to surely remove solids that have bitten into the gaps and hard-to-remove solids such as hair during filtration.
また、本発明によれば、一部の濾過カートリッジを常
に逆洗位置に対向せしめ、残りの濾過カートリッジを濾
過位置に対向せしめるようにして濾過時にも一部の濾過
カートリッジの逆洗を行ないうるようにしているので、
濾過と同時に逆洗を行なうことができ、この結果、濾過
効率を従来のものより向上することができる。Further, according to the present invention, some filtration cartridges are always made to face the backwashing position, and the remaining filtration cartridges are made to face the filtration position so that some of the filtration cartridges can be backwashed even during filtration. So
Backwashing can be performed simultaneously with the filtration, and as a result, the filtration efficiency can be improved as compared with the conventional one.
以下、本発明を図面に示す実施例により説明する。 Hereinafter, the present invention will be described with reference to embodiments shown in the drawings.
第１図および第２図は濾過時と逆洗時における本発明
の自動逆洗濾過機10に使用される濾過カートリッジ11の
作用を示す説明図であり、この濾過カートリッジ11は、
それぞれ複数枚の第１濾過部材12,12…、第２濾過部材1
3,13…を交互に重積して構成されている。FIG. 1 and FIG. 2 are explanatory views showing the operation of a filtration cartridge 11 used in the automatic backwashing filter 10 of the present invention at the time of filtration and backwashing.
Each of the plurality of first filtration members 12, 12,..., The second filtration member 1
3,13 ... are alternately stacked.
このうち第１濾過部材12は、第３図A,Bに詳示するよ
うに、ポリプロピレン等のプラスチックにより全体をほ
ぼ円環状に形成された環状主部14を有しており、この環
状主部14は、外周側に位置し、この環状主部14の軸方向
に対し直交する平板からなる外周部15と、この外周部15
の内周側に連設され、擂り鉢状に形成された内周部16と
により構成されている。したがって、前記第１濾過部材
12の一方の表面12Aには、円錐台形の凹部17が形成され
ることになる。また、前記第１濾過部材12の他方の表面
12Bには、環状主部14の半径方向にその内周端から外周
端まで延在し、着座面18Aが外周部15と平行に形成され
ている複数個（本実施例においては12個）のスペーサ1
8,18…が円周方向に等しい角度を隔てて突設されてい
る。なお、濾過時における固形物の良好な捕捉と、逆洗
時における固形物の確実な取り除きのためには、環状主
部14の内周端におけるスペーサ18の高さは0.02〜1mmの
範囲であることが望ましい。As shown in FIGS. 3A and 3B, the first filtering member 12 has an annular main portion 14 formed entirely of a plastic such as polypropylene in a substantially annular shape. Reference numeral 14 denotes an outer peripheral portion 15 which is located on the outer peripheral side and is formed of a flat plate orthogonal to the axial direction of the annular main portion 14;
And an inner peripheral portion 16 formed in a mortar shape. Therefore, the first filtering member
A truncated cone-shaped recess 17 is formed on one surface 12A of 12. Also, the other surface of the first filtration member 12
12B, a plurality (12 in this embodiment) of which the seating surface 18A is formed parallel to the outer peripheral portion 15 and extends from the inner peripheral end to the outer peripheral end thereof in the radial direction of the annular main portion 14. Spacer 1
8,18 ... are protruded at equal angles in the circumferential direction. In addition, the height of the spacer 18 at the inner peripheral end of the annular main portion 14 is in the range of 0.02 to 1 mm in order to capture solids well during filtration and to reliably remove solids during backwashing. It is desirable.
一方、前記第２濾過部材13は、第４図A,Bに詳示する
ように、ポリプロピレン等のプラスチックにより全体を
前記第１濾過部材12の外径ならびに内径とほぼ等しい円
環状に形成された環状主部19からなり、この環状主部19
は、第２濾過部材13の軸方向に対し直交する平板により
構成されている。この第２濾過部材13は、逆洗示に内周
側が前記第１濾過部材12の凹部17に沿うように撓みうる
ようにするため、そのショアＤ硬度は50〜80の範囲に設
定することが好ましい。On the other hand, as shown in detail in FIGS. 4A and 4B, the second filter member 13 is formed entirely of a plastic such as polypropylene into an annular shape substantially equal to the outer diameter and the inner diameter of the first filter member 12. An annular main portion 19 is formed.
Is constituted by a flat plate orthogonal to the axial direction of the second filtration member 13. The second filter member 13 may be set to have a Shore D hardness in the range of 50 to 80 in order to allow the inner peripheral side to bend along the concave portion 17 of the first filter member 12 as shown in the backwashing. preferable.
なお、前記第１濾過部材12および第２濾過部材13に
は、それぞれ複数個の小径孔20,20…が穿設されている
が、これらの小径孔20には、それぞれ複数枚の第１濾過
部材12および第２濾過部材13を安定的に重積するための
図示しない条体が挿通されるようになっている。The first filtration member 12 and the second filtration member 13 are each provided with a plurality of small-diameter holes 20. Each of these small-diameter holes 20 has a plurality of first filtration members. A strip (not shown) for stably stacking the member 12 and the second filtration member 13 is inserted therethrough.
前述したそれぞれ複数枚の第１濾過部材12、第２濾過
部材13を交互に重積してなる前記濾過カートリッジ11
は、第５図に示す自動逆洗濾過機10に使用される。The filtration cartridge 11 in which a plurality of the first filtration members 12 and the second filtration members 13 described above are alternately stacked.
Is used in the automatic backwash filter 10 shown in FIG.
第５図において、自動逆洗濾過機10は密閉型で堅型円
筒形状のケーシング21を有しており、このケーシング21
内の下部には、支持部材たる円板22が回転自在に配置さ
れている。この円板22は、前記ケーシング21の周壁21A
の内径にほぼ等しい外径を有しており、このケーシング
21の外周面には、ケーシング21の周壁21Aとの間におけ
る液密を保持するためのシールリング23が周設されてい
る。また、前記シールリング23は、円周方向に等しい角
度を隔てて複数の円形孔24,24…が穿設されており、各
円形孔24の内径は、前記第１濾過部材12および第２濾過
部材13の内径とほぼ等しい寸法に形成されている。前記
円板22上には、各円形孔24に対向するようにそれぞれ前
記濾過カートリッジ11が支持されている。さらに、前記
円板22の中心部には、上方に延在し、前記ケーシング21
の上壁21Bを貫通して外部に臨む回転軸25が形成されて
おり、この回転軸25は、ケーシング21の上壁21B上に設
置された駆動手段たるモータ26により、連続的に回転駆
動されるかあるいは全周を前記円形孔24の数で徐した角
度ずつ間歇回転駆動されるようになっている。In FIG. 5, the automatic backwashing filter 10 has a closed and rigid cylindrical casing 21.
At the lower part inside, a disk 22 as a support member is rotatably arranged. This disk 22 is formed by a peripheral wall 21A of the casing 21.
Has an outer diameter approximately equal to the inner diameter of
A seal ring 23 for maintaining liquid tightness with the peripheral wall 21A of the casing 21 is provided around the outer peripheral surface of the casing 21. A plurality of circular holes 24 are formed in the seal ring 23 at equal angles in the circumferential direction. The inner diameter of each circular hole 24 is determined by the first filtering member 12 and the second filtering member. It is formed to have dimensions substantially equal to the inner diameter of the member 13. The filtration cartridge 11 is supported on the disk 22 so as to face each circular hole 24. Further, the casing 21 extends upward at the center of the disc 22 and extends upward.
A rotating shaft 25 that penetrates the upper wall 21B and faces the outside is formed, and the rotating shaft 25 is continuously rotated and driven by a motor 26 serving as a driving unit installed on the upper wall 21B of the casing 21. Or the whole circumference is driven intermittently by an angle reduced by the number of the circular holes 24.
前記ケーシング21の下部には、固形物を濾過すべき流
体を円板22の下方のケーシング21内へ導入するための原
液導入管27が接続されており、また、前記ケーシング21
の周壁21Aの上部には、濾過された流体をケーシング21
から排出する清澄液排出管29が接続されている。The lower part of the casing 21 is connected to a stock solution introducing pipe 27 for introducing a fluid from which solids are to be filtered into the casing 21 below the disk 22.
The filtered fluid is applied to the upper part of the peripheral wall 21A of the casing 21.
A clarified liquid discharge pipe 29 for discharging the liquid is connected.
一方、前記ケーシング21の下部には、逆洗により固形
物が混入した逆洗水を排出する逆洗水排出管29が接続さ
れており、この逆洗水排出管29の基端は、前記ケーシン
グ21内に臨み、停止位置にある円板22のひとつの円形孔
24の直下に小さな間隙をもって近接されるようになって
いる。また、この逆洗水排出管29の外周には、コイルば
ね30により上方に付勢され、前記円板22との間隙から流
体が逆洗水排出管29へ浸入するのを防止するカバー筒31
が逆洗水排出管29に対し比較的密に嵌合されている。さ
らに、前記ケーシング21の周壁21Aの外側には、前記円
板22より下方のケーシング21内の流体圧を測定する圧力
計32と、円板22より上方のケーシング21内の流体圧力を
測定する圧力計33とがそれぞれ間接的に接続されてお
り、これらの圧力計32および圧力計33間には、これらの
圧力計32,33間の差圧を測定する差圧計あるいは差圧ス
イッチ34が接続されている。さらにまた、前記逆洗水排
出管29には、開閉可能な逆洗弁35が介装されている。On the other hand, a lower part of the casing 21 is connected to a backwash water discharge pipe 29 for discharging backwash water mixed with solids by backwashing. One circular hole of the disk 22 facing the inside and at the stop position
It is designed to be close to 24 with a small gap. A cover tube 31 is urged upward by a coil spring 30 on the outer periphery of the backwash water discharge pipe 29 to prevent fluid from entering the backwash water discharge pipe 29 from the gap with the disk 22.
Are fitted relatively closely to the backwash water discharge pipe 29. Further, a pressure gauge 32 for measuring a fluid pressure in the casing 21 below the disk 22 and a pressure for measuring a fluid pressure in the casing 21 above the disk 22 are provided outside the peripheral wall 21A of the casing 21. The pressure gauges 33 and 33 are indirectly connected to each other, and a differential pressure gauge or a differential pressure switch 34 for measuring a differential pressure between the pressure gauges 32 and 33 is connected between the pressure gauges 32 and 33. ing. Further, the backwash water discharge pipe 29 is provided with a backwash valve 35 that can be opened and closed.
つぎに、前述した構成からなる本実施例の作用につい
て説明する。Next, the operation of the present embodiment having the above-described configuration will be described.
まず、第５図に示す自動逆洗濾過機10の作用について
説明すると、逆洗水排出管29の逆洗弁35を閉じた状態に
おいて、原液導入管27から円板22の下方のケーシング21
内に固形物を含有している流体（原液）を導入すると、
この流体は、逆洗水排出管29に対向している円形孔24を
除く各円形孔24を介して各濾過カートリッジ11の内部に
導入され、各第１濾過部材12および第２濾過部材13間の
間隙を介して濾過カートリッジ11の外側に流通される。
この濾過時の各第１濾過部材12および第２濾過部材13間
の間隙は、第１濾過部材12の各スペーサ18が第２濾過部
材13上に着座している状態を維持しているので、第１図
に示すように、各スペーサ18の内周端における高さに等
しくされている。そして、この間隙を超えた大きさの固
形物は、第１濾過部材12および第２濾過部材13間の間隙
を通過できず、濾過カートリッジ11の内側に捕捉され
る。したがって、各濾過カートリッジ11を内側から外側
へ通過して清澄液排出管28から排出される流体は、所定
以上の大きさの固形物を除去された清澄液とされる。First, the operation of the automatic backwash filter 10 shown in FIG. 5 will be described. In a state where the backwash valve 35 of the backwash water discharge pipe 29 is closed, the casing 21 below the disc 22 from the stock solution introduction pipe 27 is closed.
When a fluid (stock solution) containing solid matter is introduced into
This fluid is introduced into each of the filtration cartridges 11 through each of the circular holes 24 except for the circular hole 24 facing the backwash water discharge pipe 29, and is introduced between the first filtration member 12 and the second filtration member 13. Is circulated to the outside of the filtration cartridge 11 through the gap.
Since the gap between each of the first filtration member 12 and the second filtration member 13 during this filtration maintains the state where each spacer 18 of the first filtration member 12 is seated on the second filtration member 13, As shown in FIG. 1, the height of each spacer 18 at the inner peripheral end is made equal. Then, the solid matter having a size exceeding the gap cannot pass through the gap between the first filtration member 12 and the second filtration member 13 and is captured inside the filtration cartridge 11. Accordingly, the fluid that passes through each filtration cartridge 11 from the inside to the outside and is discharged from the clarified liquid discharge pipe 28 is a clarified liquid from which a solid substance having a predetermined size or more is removed.
このようにして各濾過カートリッジ11による流体の濾
過を続けていると、逆洗水排出管29に対向している濾過
カートリッジ11以外の各濾過カートリッジ11の内周側に
は、流体から除去された固形物が次第に堆積することに
なり、すると、これらの濾過カートリッジ11の内側から
外側への流体の流れが次第に悪くなる。この結果、原液
導入管27と連通している、円板22の下方のケーシング21
内の流体圧が円板22の上方のケーシング21内の流体圧よ
り高圧力になり、差圧計あるいは差圧スイッチ34が検出
しているこの差圧が設定圧に達すると、この差圧計ある
いは差圧スイッチ34が検出した差圧検出信号が図示しな
い制御手段に出力され、この制御手段からの制御信号に
よりモータ26が回転を開始し、連続的に回転するかある
いは回転軸25の回転を介して円板22の次位の円形孔24が
逆洗水排出管29に対向するまで円板22を所定角度だけ回
転させたうえでモータ26は回転を停止する。また、前述
した制御手段からの制御信号により、円板22の回転に先
立って逆洗水排出管29を閉じている逆洗弁35が開かれて
逆洗水排出管29に対向している濾過カートリッジ11の内
側の流体が逆洗水排出管29を介して排出されるようにな
る。When the filtration of the fluid by the respective filtration cartridges 11 is continued in this way, the inner peripheral side of each of the filtration cartridges 11 other than the filtration cartridge 11 facing the backwash water discharge pipe 29 is removed from the fluid. As solids gradually accumulate, the flow of fluid from inside to outside of these filtration cartridges 11 gradually worsens. As a result, the casing 21 below the disc 22 and communicating with the undiluted solution introduction pipe 27
When the fluid pressure in the casing becomes higher than the fluid pressure in the casing 21 above the disk 22, and the differential pressure detected by the differential pressure gauge or the differential pressure switch 34 reaches the set pressure, the differential pressure gauge or the differential pressure The differential pressure detection signal detected by the pressure switch 34 is output to control means (not shown), and the control signal from the control means causes the motor 26 to start rotating and rotate continuously or via the rotation of the rotating shaft 25. The motor 26 stops rotating after rotating the disc 22 by a predetermined angle until the next circular hole 24 of the disc 22 faces the backwash water discharge pipe 29. In addition, according to the control signal from the control means described above, the backwash valve 35 that closes the backwash water discharge pipe 29 is opened prior to the rotation of the disk 22, and the filter that faces the backwash water discharge pipe 29 is opened. The fluid inside the cartridge 11 is discharged through the backwash water discharge pipe 29.
この結果、逆洗水排出管29に対向している濾過カート
リッジ11においては、流体が外側から内側に流れる第２
図に示す逆洗が行なわれ、今まで逆洗水排出管29に対向
していた濾過カートリッジ11を含むその他の各濾過カー
トリッジ11においては、流体が内側から外側に流れる第
１図に示す濾過が継続される。As a result, in the filtration cartridge 11 facing the backwash water discharge pipe 29, the second flow of the fluid from the outside to the inside is performed.
In each of the other filtration cartridges 11 including the filtration cartridge 11 which has been subjected to the backwashing shown in FIG. 1 and which has been opposed to the backwash water discharge pipe 29, the filtration shown in FIG. To be continued.
前述した第２図に示す逆洗においては、濾過カートリ
ッジ11の第１濾過部材12および第２濾過部材13間の外側
から内側に流れるカバー筒31に、凹部17の外側に沿って
傾斜状に流れるが、このとき徐々に流路容積が小さくな
ることにより流体圧が増大し、この増大した流体圧によ
り第２濾過部材13を振動させて、ひとつおいた他の第１
濾過部材12の凹部17に沿うように撓ませる。この結果、
第１濾過部材12および第２濾過部材13間の間隙が濾過時
よりも大きくなり、濾過カートリッジ11の内側に堆積し
た固形物を確実に取り除くことができる。In the backwashing shown in FIG. 2 described above, the water flows obliquely along the outside of the concave portion 17 into the cover tube 31 which flows from the outside to the inside between the first filtration member 12 and the second filtration member 13 of the filtration cartridge 11. However, at this time, the fluid pressure increases due to the passage volume gradually decreasing, and the second filter member 13 is vibrated by the increased fluid pressure, and the remaining first filter member 13 is removed.
The filter member 12 is bent along the concave portion 17. As a result,
The gap between the first filtration member 12 and the second filtration member 13 is larger than that at the time of filtration, and solid matter deposited inside the filtration cartridge 11 can be reliably removed.
間歇回転の場合はひとつの濾過カートリッジ11の所定
の逆洗時間が経過すると、制御手段からの制御信号によ
り再度モータ26が駆動され、次位の濾過カートリッジ11
が逆洗水排出管29に対向する逆洗位置に位置決めされ、
この濾過カートリッジ11の逆洗が行なわれる。このよう
にしてすべての濾過カートリッジ11の逆洗が終了するこ
とにより逆洗作業は完了し、逆洗水排出管29の逆洗弁35
は閉じることになる。In the case of intermittent rotation, after a predetermined backwash time of one filtration cartridge 11 has elapsed, the motor 26 is driven again by a control signal from the control means, and the next filtration cartridge 11
Is positioned at the backwash position facing the backwash water discharge pipe 29,
This filtration cartridge 11 is backwashed. When the backwashing of all the filtration cartridges 11 is completed in this way, the backwashing operation is completed, and the backwash valve 35 of the backwash water discharge pipe 29 is provided.
Will be closed.
前述した本実施例によれば、複数の濾過カートリッジ
11による濾過を継続しながら他の濾過カートリッジ11の
逆洗を行なうので、良好な濾過効果を維持して逆洗を行
なうことができる。また、逆洗時における第１濾過部材
12および第２濾過部材13間の間隙は、濾過時における第
１濾過部材12および第２濾過部材13間の間隙より大きい
ので、濾過時には、狭い第１濾過部材12および第２濾過
部材13間の間隙により小さな固形物までも捕捉できる
し、逆洗時には、広い第１濾過部材12および第２濾過部
材13間の間隙により堆積した固形物を確実に取り除くこ
とができる。なお、第１濾過部材12、第２濾過部材13は
それぞれ直径方向に十分な幅を有しているので、不定形
の固形物や繊維状のものがからみにくくなっている。According to this embodiment described above, a plurality of filtration cartridges
Since the other filter cartridge 11 is backwashed while the filtration by 11 is continued, the backwash can be performed while maintaining a good filtration effect. Further, the first filtration member at the time of back washing
The gap between the first filter member 12 and the second filter member 13 is larger than the gap between the first filter member 12 and the second filter member 13 at the time of filtration. Even small solids can be captured by the gap, and solid matter deposited by the wide gap between the first filter member 12 and the second filter member 13 can be reliably removed during backwashing. In addition, since the first filtration member 12 and the second filtration member 13 each have a sufficient width in the diametric direction, irregular solids or fibrous materials are hardly entangled.
なお、本発明は、前述した実施例に限定されるもので
はなく、必要に応じて種々の変更が可能である。例え
ば、２つ以上の濾過カートリッジを同時に逆洗するよう
にしてもよい。Note that the present invention is not limited to the above-described embodiments, and various modifications can be made as necessary. For example, two or more filtration cartridges may be backwashed simultaneously.
以上説明したように本発明によれば、濾過時より逆洗
時の濾過部材間の間隙を流体圧により大きくして、濾過
時には流体中の固形物を良好に除去できるとともに、逆
洗時には濾過部材に堆積あるいはからまった固形物を良
好に取り除くことができ、しかも、濾過時に一部の濾過
カートリッジの逆洗を同時に行なって実質的な濾過時間
を長くできるという優れた効果を奏する。As described above, according to the present invention, the gap between the filtration members at the time of backwashing is made larger by the fluid pressure at the time of filtration, so that solids in the fluid can be satisfactorily removed at the time of filtration and at the same time, the filtration member This provides an excellent effect that solid matter deposited or entangled in the filter can be satisfactorily removed, and at the same time, some filtration cartridges can be backwashed at the same time during filtration to substantially increase the filtration time.
第１図ないし第５図は本発明に係る自動逆洗濾過機の実
施例を示すものであり、第１図は濾過時における濾過カ
ートリッジの状態を示す要部の詳細を示す縦断面図、第
２図は逆洗時における濾過カートリッジの状態を示す第
１図と同様の図、第３図A,Bは第１濾過部材の平面図お
よび縦断面図、第４図A,Bは第２濾過部材の平面図およ
び縦断面図、第５図は本発明の全体を示す縦断面図、第
６図および第７図はそれぞれ従来の濾過カートリッジの
要部を示す断面図である。 10……自動逆洗濾過機、11……濾過カートリッジ、12…
…第１濾過部材、13……第２濾過部材、14,19……環状
主部、17……凹部、18……スペーサ、21……ケーシン
グ、22……円板、24……円形孔、25……回転軸、26……
モータ、27……原液導入管、28……清澄液排出管、29…
…逆洗水排出管、32,33……圧力計、34……差圧計ある
いは差圧スイッチ、35……逆洗弁。1 to 5 show an embodiment of an automatic backwashing filter according to the present invention. FIG. 1 is a longitudinal sectional view showing details of a main part showing a state of a filtration cartridge at the time of filtration. FIG. 2 is a view similar to FIG. 1 showing the state of the filtration cartridge at the time of back washing, FIGS. 3A and 3B are a plan view and a longitudinal sectional view of the first filtration member, and FIGS. FIG. 5 is a plan view and a longitudinal sectional view of the member, FIG. 5 is a longitudinal sectional view showing the whole of the present invention, and FIGS. 6 and 7 are sectional views showing the main parts of a conventional filtration cartridge. 10 Automatic backwash filter, 11 Filtration cartridge, 12
.., First filter member, 13… second filter member, 14, 19… annular main part, 17… recess, 18… spacer, 21… casing, 22… disk, 24… circular hole, 25 …… Rotary axis, 26 ……
Motor, 27 ... Undiluted liquid introduction pipe, 28 ... Clarified liquid discharge pipe, 29 ...
... Backwash water discharge pipe, 32,33 ... Pressure gauge, 34 ... Differential pressure gauge or switch, 35 ... Backwash valve.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 ＦＩ Ｂ０１Ｄ 33/58 35/16 ──────────────────────────────────────────────────の Continued on front page (51) Int.Cl. 6 Identification code FI B01D 33/58 35/16
Claims (3)
凹部を有するとともに他方の表面にスペーサが突設され
た複数枚の第１濾過部材と、平板円環状に形成された複
数枚の第２濾過部材とを交互に重積して濾過カートリッ
ジを形成し、複数の前記濾過カートリッジを回転可能な
支持部材に円周状に支持し、前記濾過カートリッジの少
なくともひつとを外側から内側へ流体が流通する逆洗位
置に対向せしめるとともに、他の濾過カートリッジを内
側から外側へ流体が流通する濾過位置に対向せしめるよ
うに前記支持部材を連続回転または所定角度ずつ間歇回
転せしめる駆動手段を設けたことを特徴とする自動逆洗
濾過機。1. A plurality of first filtering members formed in an annular shape and having a truncated conical recess on one surface and a spacer protruding on the other surface, and a plurality of first filtering members formed in a flat annular shape. A second filtration member is alternately stacked to form a filtration cartridge, a plurality of the filtration cartridges are circumferentially supported by a rotatable support member, and at least one of the filtration cartridges is fluidized from outside to inside. A drive means for continuously rotating or intermittently rotating the support member by a predetermined angle so as to face the backwash position where the fluid flows and the other filtration cartridge to the filtration position where the fluid flows from the inside to the outside is provided. Automatic backwash filtration machine characterized by the following.
〜1mmの範囲にしたことを特徴とする請求項第１項記載
の自動逆洗濾過機。2. The height of the spacer of the first filtering member is 0.02.
2. The automatic backwash filter according to claim 1, wherein the size of the filter is within a range of 1 mm to 1 mm.
の範囲にしたことを特徴とする請求項第１項または第２
項記載の自動逆洗濾過機。3. The Shore D hardness of the second filter member is 50 to 80.
3. The method according to claim 1, wherein:
The automatic backwash filter according to the above item.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1326138A JP2834240B2 (en) | 1989-12-18 | 1989-12-18 | Automatic backwash filtration machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1326138A JP2834240B2 (en) | 1989-12-18 | 1989-12-18 | Automatic backwash filtration machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03188906A JPH03188906A (en) | 1991-08-16 |
| JP2834240B2 true JP2834240B2 (en) | 1998-12-09 |
Family
ID=18184477
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1326138A Expired - Fee Related JP2834240B2 (en) | 1989-12-18 | 1989-12-18 | Automatic backwash filtration machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2834240B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101786748B (en) * | 2010-03-30 | 2012-06-13 | 青岛海德威科技有限公司 | Efficient inactivation and energy-saving ship ballast water process method and system |
| JP2013230411A (en) * | 2012-04-27 | 2013-11-14 | Mizuno Strainer Kogyo Kk | Backwash type filter |
| CN102921208B (en) * | 2012-10-29 | 2014-09-10 | 济南大学 | Efficient continuous type reverse-particle-size filter device and technology |
-
1989
- 1989-12-18 JP JP1326138A patent/JP2834240B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03188906A (en) | 1991-08-16 |
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