JPS5879511A - Washing method for filter cloth of dehydrator - Google Patents
Washing method for filter cloth of dehydratorInfo
- Publication number
- JPS5879511A JPS5879511A JP56175920A JP17592081A JPS5879511A JP S5879511 A JPS5879511 A JP S5879511A JP 56175920 A JP56175920 A JP 56175920A JP 17592081 A JP17592081 A JP 17592081A JP S5879511 A JPS5879511 A JP S5879511A
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- tank
- valve
- water
- raw water
- 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.)
- Granted
Links
Landscapes
- Filtration Of Liquid (AREA)
Abstract
Description
【発明の詳細な説明】
以下生コンプラントと言う）などから発生する汚水の処
理に用いる脱水炉布の洗浄を効果的に実施するための逆
流洗浄に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to backflow cleaning for effectively cleaning dehydration furnace cloth used to treat wastewater generated from raw compost (hereinafter referred to as raw compost).
従来の斯かる汚水処理には専ら脱水筒内の周壁に炉布を
設け、この炉布を通して脱水を行う脱水機が用いられて
おり、これを一定時間使用して洗浄するには第１図に示
す如く脱水終了時に脱水筒を２分割Ａ．Ａ’の状態に開
放させ、作業員がノズルホースなどを使用して炉布Ｂ，
Ｂ’の炉滓蓄積側より洗浄することが行われている。と
ころで、このような洗浄では炉布織目内に残留する残滓
までは取除くことができず、ｐ布の目詰り防止が完全に
図られることにならず、脱水効率の減少とｐ過抵抗の上
昇に伴うｐ布寿命の低下を招来させていた。また洗浄作
業中の洗浄液が脱水筒外へ飛散するため、脱水機器を汚
染させていた。Conventional sewage treatment uses a dehydrator, which is equipped with a furnace cloth on the peripheral wall of the dehydration cylinder and performs dewatering through the furnace cloth. As shown, when the dehydration is completed, the dehydration cylinder is divided into two A. Open it to state A', and the worker uses a nozzle hose etc. to open the furnace cloth B,
Cleaning is performed from the slag accumulation side of B'. By the way, this kind of cleaning cannot remove the residue remaining in the weave of the kiln cloth, and the clogging of the P cloth cannot be completely prevented, leading to a decrease in dewatering efficiency and an increase in P overresistance. This caused a decrease in the lifespan of the p-cloth as the temperature increased. In addition, the cleaning liquid during cleaning was scattered outside the dehydration cylinder, contaminating the dehydration equipment.
本発明は紙上の問題点を解決せんとするものであって、
炉布が脱水筒内の周壁に取付けられている状態で、脱水
工程で通過する水分の流れ方向とは反対方向からの洗浄
水により炉布の目詰りを開放するようになすのほか、炉
布通過後の洗浄水は原液流入管を通過させて圧力タンク
内に流入させ、この内部も洗浄するようにするのであり
、以下本発明実施の一例を添附図面にもとづいて説明す
る。The present invention aims to solve the problems associated with paper, and
While the furnace cloth is attached to the peripheral wall of the dehydration cylinder, cleaning water from the direction opposite to the flow direction of water passing through the dehydration process can be used to unclog the furnace cloth. After passing, the washing water passes through the stock solution inflow pipe and flows into the pressure tank, so that the inside of the tank is also washed.An example of the embodiment of the present invention will be described below with reference to the accompanying drawings.
第２図は工程略図であってｌは生コンブランドから流入
する汚水（原水）貯槽、２は圧力タンクであって前記槽
内の・原水はポンプ３の駆動で管４及び逆止弁５を経て
該タンク内に流入するようになっている。６はレペラー
であってタンク内の液量を検知しながらポンプ３の自動
停止及び始動が行われるようになし、またこれに関連し
て給気管７のパルプ８及び排気管９のパルプ１０が開閉
塞されるようになっている。FIG. 2 is a process diagram, in which 1 is a storage tank for sewage (raw water) that flows in from the ready-mixed concrete brand, 2 is a pressure tank, and the raw water in the tank is driven by a pump 3 and passes through a pipe 4 and a check valve 5. It is adapted to flow into the tank. 6 is a repeller that automatically stops and starts the pump 3 while detecting the liquid level in the tank, and in connection with this, the pulp 8 of the air supply pipe 7 and the pulp 10 of the exhaust pipe 9 are opened. It is becoming blocked.
一方、１１は脱水筒、１２は該脱水筒と前記圧力タンク
２とを連通させてなる原液流出管、１３及び１４は圧力
タンク内の原水を一部原水槽内に還流させるためのドレ
ン管及びその操作用バルブである。On the other hand, 11 is a dehydration cylinder, 12 is a raw solution outflow pipe that communicates the dehydration cylinder and the pressure tank 2, and 13 and 14 are drain pipes for partially circulating the raw water in the pressure tank into the raw water tank; This is the operating valve.
他方、１５ａ、１θａは次述する脱水筒内のｐ門通過後
のｐ液流出管で脱水筒の２分割に対応可能となるようフ
レキシブル管で構成されて排出本管１６に連結されると
共にパルプ１７を経て外部に放出されるようになってお
り、且つ肢管には後述する洗浄水の流入管１日がパルプ
１９を介して連結されてなる。On the other hand, 15a and 1θa are p liquid outflow pipes after passing through the p gate in the dehydration cylinder, which will be described below, and are constructed of flexible pipes so as to be able to divide the dehydration cylinder into two, and are connected to the discharge main pipe 16 and are connected to the pulp discharge pipe. The water is discharged to the outside through a pulp 17, and an inflow pipe for washing water, which will be described later, is connected to the limb tube via a pulp 19.
本発明に於りて脱水筒１１は第３図Ａ％Ｂ％Ｃに示す如
き左右へ２分割１１ａ、 ｌｌ’ａされる構成で該筒内
に設備される炉布２０，２０１は第４図に示す如き固定
ボルト２１を介して不動の状態に止着されるのであり、
このさい２２はシール座金、２３は袋ナツト、２４はパ
ンチングメタル、２５は袋内部に原水を流入させるよう
になす原水流入口である。図示例では炉布２０．２０１
を脱水筒１１内のパンチングメタル２４に止着させるの
に固定ボルト２１を使用したものについて図示したが他
の任意な止着手段を、及び又は額枠状の座金等を介して
取付けるようにすることができる。なお、核炉布の止着
は次述する逆洗浄のさい、炉布２０．２０゛が脱水筒内
に向って収縮することを防止し、効率の良い逆洗浄作業
が行われるようにするだめの、ものであり、本発明者の
数多くの実験によれば第５図（第３図ＢのＹ −Ｙ線矢
示側面図）に示す如くその止着位置を脱水筒１１ａ（１
１ｂについ１も同じ）の膨出面部Ｆの周囲で取囲むよう
に止着することが逆洗浄圧力で炉布の曲が抄を防止でき
る上゛で優れる。In the present invention, the dehydration cylinder 11 is divided into left and right halves 11a and ll'a as shown in FIG. It is fixed in an immovable state via a fixing bolt 21 as shown in FIG.
In this case, 22 is a seal washer, 23 is a cap nut, 24 is a punching metal, and 25 is a raw water inlet that allows raw water to flow into the inside of the bag. In the illustrated example, the furnace cloth 20.201
Although the illustration uses a fixing bolt 21 to fix the dehydrator to the punching metal 24 in the dewatering cylinder 11, it may be attached using any other fixing means or via a frame-shaped washer or the like. be able to. In addition, the purpose of fixing the reactor cloth is to prevent the reactor cloth 20.20゛ from shrinking toward the inside of the dehydration cylinder during the backwashing described below, and to ensure efficient backwashing work. According to the inventor's numerous experiments, the fixing position of the dehydrator tube 11a (1
It is advantageous to fix the cloth so as to surround it around the bulging surface portion F of 1b (the same applies to 1) because it can prevent the furnace cloth from bending due to backwashing pressure.
なお、上記止着手段に代え鋼棒、合成樹脂やパンチング
プレートなどで製作した第６図に示す如き量体２６を炉
布と共に止着させるようになしても良く或は別体に構成
した量体を脱水筒内に吊下げ式に設置するようにしても
良く、またこのとき炉布と量体とが一体に作成されるも
のであっても良い。Incidentally, instead of the fixing means described above, a weight body 26 as shown in FIG. 6 made of steel rod, synthetic resin, punching plate, etc. may be fixed together with the furnace cloth, or it may be configured separately. The body may be installed in a hanging manner within the dehydration cylinder, or the furnace cloth and the weighing body may be made integrally at this time.
次に作用例について説明する。Next, an example of operation will be explained.
汚水貯槽１内の原水はポンプ３の駆動によって圧力タン
ク２内に汲み上げられる。汲み上げ当初バルブ１０は開
放し、これに対しパルプ８及び１４は閉塞されているの
であり、原水がタンク内の上限位置Ｌ１に到達するとレ
ペラー６の検知器が作動してポンプ３の駆動が停止する
と共に排気管９のパルプ１０が閉塞し、且つ給気管マの
パルプ８及び流出本管１６のパルプ１７が開放されてタ
ンク内原水が一定の加圧下で原液流出管１２を経て脱水
筒１１内に圧入され、炉布２０．２０′を通過し管１５
ｇ 、 １５’ａ及び排出本管１６及びパルプ１７を経
て外部に排出される。該作業中原水中に含まれる固形分
は脱水筒１１の炉布内部に堆積遺留されるのであり、タ
ンク内原水が下限位置Ｌ２に到達するとレペラー６の検
知器が作動してパルプ１７及び１０が開放されると共に
パルプ８が閉塞され、且つ脱水筒内の固形分を腕形させ
るべく油圧シ・リンダ−２フが作動し、脱水筒を左右方
向に分割して炉布２０ ’、 ２０’内部に堆積した同
のパルプ１９を開放すると共に洗浄水を排出本管１６か
ら分岐管１５ａ、 １５°−を経て、前記−液の流路方
向とは逆方向に脱水筒内に圧入させ、炉布２０．２０’
を逆洗するようになすのである・しかして、炉布２０，
２σを通過した洗浄水は原液流出管１２を逆流して圧力
タンク２内に流入するのであり、一方法浄水はタイマー
セットによる一定時間が経過することによってパルプ１
９が閉塞され、逆洗浄作用が中止されると共にポンプ３
が駆動して貯槽１内の原水のタンク２内への流入が再開
され、以下同様の作動が繰返えされるのである。Raw water in the wastewater storage tank 1 is pumped up into the pressure tank 2 by driving the pump 3. At the beginning of pumping, the valve 10 is open, whereas the pulps 8 and 14 are closed. When the raw water reaches the upper limit position L1 in the tank, the detector of the repeller 6 is activated and the drive of the pump 3 is stopped. At the same time, the pulp 10 of the exhaust pipe 9 is closed, and the pulp 8 of the air supply pipe M and the pulp 17 of the outflow main pipe 16 are opened, and the raw water in the tank flows into the dehydration cylinder 11 through the raw solution outflow pipe 12 under constant pressure. The tube 15 is press-fitted and passes through the furnace cloth 20.20'.
g, 15'a, and is discharged to the outside through the discharge main 16 and pulp 17. During this operation, the solid content contained in the raw water is deposited and remains inside the furnace cloth of the dehydration cylinder 11, and when the raw water in the tank reaches the lower limit position L2, the detector of the repeller 6 is activated and the pulps 17 and 10 are opened. At the same time, the pulp 8 is closed, and the hydraulic cylinder 2 is operated to make the solids in the dehydration cylinder into an arm shape, dividing the dehydration cylinder in the left and right direction and discharging them inside the furnace cloths 20', 20'. The same accumulated pulp 19 is released, and the cleaning water is forced into the dehydration cylinder from the main discharge pipe 16 through the branch pipes 15a and 15° in the direction opposite to the flow path direction of the liquid, and the furnace cloth 20 .20'
Therefore, the furnace cloth 20,
The cleaning water that has passed through 2σ flows backward through the raw solution outflow pipe 12 and flows into the pressure tank 2. One method is to purify the water by turning it into pulp 1 after a certain period of time has elapsed by setting a timer.
9 is blocked, the backwashing action is stopped, and the pump 3
is driven to restart the flow of raw water in the storage tank 1 into the tank 2, and the same operation is repeated thereafter.
上記説明ではタンク内に流入した当初の原水が下限位置
に到達した時点で脱水筒内の固形分の取出しが行われる
ものについて説明したが、数回の繰返し過程で脱水筒内
の固形分の取出しが行われるようにすることもできるの
であシ、且つその作動を脱水筒内の固形分の堆積量と関
連づけて行うようにしても良い。In the above explanation, the solid content in the dehydration cylinder is removed when the original raw water that flows into the tank reaches the lower limit position, but the solid content in the dehydration cylinder is removed after several repetitions. It is also possible to perform this operation in relation to the amount of solid content deposited in the dehydration cylinder.
また原水が下限位置Ｌ２に到達した時点で直ちに脱水筒
を２分割して固形分を取出すことなく即ちパルプ１０及
び８が閉塞された状態でパルプ１４を開き、下限位置Ｌ
２以下に残った水をドレン配管工３を通して原水貯槽２
内に返戻させることによりタンク内残玉にてブラッシン
グ洗浄を行うようにしても良い。この操作はタンク２内
水位が下限に達する度毎に毎回行っても良いし、数回の
繰返えし過程で１回行われるようにしても良い。圧力タ
ンク内及び配管内の水が全て抜けると、パルプ１４を閉
めると共にパルプ１０を開放させてポンプ３を駆動させ
るか、その前に脱水筒１１を開放させて該槽内固形分の
取出しが行われるようになすのであり、以下同様にして
前述の作動が繰返えして行われる。なお、本例では洗浄
済み液を圧力タンク２内に流入させる場合について説明
したが、パルプ１４を開放させてドレン排出管から原水
貯槽１内に流入させるようになしても良い。Further, when the raw water reaches the lower limit position L2, immediately divide the dehydration cylinder into two and open the pulp 14 without removing the solid content, that is, with pulps 10 and 8 blocked, and open the pulp 14 at the lower limit position L.
The water remaining below 2 is passed through the drain plumber 3 to the raw water storage tank 2.
Brushing cleaning may be performed using balls remaining in the tank by returning the balls to the tank. This operation may be performed every time the water level in the tank 2 reaches the lower limit, or it may be performed once in several repetitions. When all the water in the pressure tank and piping is drained, the pulp 14 is closed and the pulp 10 is opened to drive the pump 3, or before that, the dewatering cylinder 11 is opened to remove the solid content in the tank. The above-mentioned operation is repeated in the same way. In this example, a case has been described in which the washed liquid is allowed to flow into the pressure tank 2, but the pulp 14 may be opened and the washed liquid may be allowed to flow into the raw water storage tank 1 from the drain discharge pipe.
第７図は他の例を示すものであって前記実施例では１箇
の圧力タンクに対して１箇の脱水筒を設けたものについ
て説明したが、本例では脱水筒を２箇並設し脱水管用開
閉シリンダー２８ａ 、 ２Ｅ３ｂが交互に作動され
ることにより２箇の脱水筒を交互に使用し、１つの脱水
筒が使用中のときは他の脱水筒は固形分の除去が行われ
るようにするのである。FIG. 7 shows another example, and in the above embodiment, one dehydration cylinder was provided for one pressure tank, but in this example, two dehydration cylinders are installed in parallel. By alternately operating the dewatering pipe opening/closing cylinders 28a and 2E3b, the two dehydrating cylinders are used alternately, and when one dehydrating cylinder is in use, the other dehydrating cylinder is used to remove solids. That's what I do.
第８図は更に他の例を示すものであって、脱水筒１１か
らの炉液を別のタンク２９内に貯留させておき、圧力タ
ンク２に対するコンプレッサー３０からの給気管７を一
部分岐し、パルプ３１を介して該タンク２９内に圧入さ
せるようになし、逆洗浄時パルプ１７を閉塞すると共に
パルプ３１を開放して給気管７からの圧搾空気圧でタン
ク内ｐ液を逆洗浄用水として脱水筒内に送られるように
するのである。なお、通常時該タンク２９内には洗浄に
必要な一定量のｐ液が貯留されるがその他はタンク側壁
面に設けた溢流管３２から開放されたパルプ１７を経て
流出するようになっており、上記逆洗浄のさいにはパル
プ３１の開放と連動してドレン抜きパルプ３２は閉塞さ
れるのである。FIG. 8 shows still another example, in which the furnace liquid from the dehydration cylinder 11 is stored in another tank 29, and the air supply pipe 7 from the compressor 30 to the pressure tank 2 is partially branched. The pulp 31 is forced into the tank 29 through the pulp 31, and during backwashing, the pulp 17 is closed, the pulp 31 is opened, and the p liquid in the tank is used as water for backwashing using compressed air pressure from the air supply pipe 7. so that it can be sent within. Note that normally, a certain amount of p liquid necessary for cleaning is stored in the tank 29, but the rest flows out through the pulp 17 opened from an overflow pipe 32 provided on the side wall of the tank. Therefore, during the above-mentioned backwashing, the drain pulp 32 is closed in conjunction with the opening of the pulp 31.
上記各側で各パルプは電磁バルブが採用され図示しない
タイマーやリレー回路の電気信号で経時的に関連して作
動されるのである。On each side, electromagnetic valves are used for each pulp, and the valves are operated in relation to each other over time by electrical signals from a timer or relay circuit (not shown).
本発明は以上の如く構成せしめるものであって、特別な
洗浄用配管を取付けることなく、即ち従来の脱水装置の
ｐ液配管途中に洗浄水注入配管を新たに接続するだけで
炉布や圧力タンクに至る管路及び圧力タンク内の洗浄を
同時に行うことのできるものであり、しかも炉布洗浄は
洗浄液をｐ液の流路方向と逆方向に通過させることがら
炉布織目内に固着する微細粒子をも効果的に除去するこ
とのできるものであり、炉布の目づまりを開放しｐ過動
率を向上させると共に炉布寿命を延長させる一部のため
圧力タンク或は配管内へ付着しやすく閉塞障害などのト
ラブルを生じやすいのであるが、斯かる問題点の同時解
決が効果的に図られたものである。The present invention is configured as described above, and without installing special cleaning piping, that is, by simply connecting a new cleaning water injection piping in the middle of the p-liquid piping of a conventional dehydrator, the furnace cloth and pressure tank can be removed. It is possible to simultaneously clean the pipes leading to the pipes and the inside of the pressure tank. Moreover, since the furnace cloth cleaning involves passing the cleaning liquid in the opposite direction to the flow path of the p-liquid, it is possible to clean the fine particles that adhere to the inside of the furnace cloth weave. It can also effectively remove particles, which can unclog the furnace cloth, improve the p-perturbation rate, and extend the life of the furnace cloth, so it is easy to adhere to the inside of the pressure tank or piping. Although troubles such as blockage problems are likely to occur, this method effectively solves these problems at the same time.
第１図は従来の分割式脱水機の構造を示す概略正面図、
第２図は本発明方法の工程略図、第３図Ａ、Ｂ、Ｃは本
発明で使用される脱水機を示すものでＡは正面図、Ｂは
開放させた状態の作用説明図、ＣはＡのｘ−Ｘ線切断面
図、第４図は炉布の止着状態を示す部分詳細図、第５図
は第３図ＢのＹ−Ｙ線矢示図、第６図はｐ布の抑圧に使
用する箱体の斜視図、第７図及び第８図は実施態様の他
の例を示す本のである。
１ ・・・原水液貯槽 ２・・・圧力タンク３、、
、、ポンプ ６００．レペラー７・・・給気管
９・・・排気管
１１・・・脱水管 １２・・・原液流出管認・・・
ドレン管 １日・・・洗浄水流入管間、田°・・
・−布 ４・・・パンチングメタル６°°°篭
：２９・・・−過液貯留タンク３０、−喀コ
ンプレッサー ３２−１溢流管特許出願人 株式会社
北川鉄工所
第１図Figure 1 is a schematic front view showing the structure of a conventional split type dehydrator;
Fig. 2 is a process diagram of the method of the present invention, Fig. 3 A, B, and C show the dehydrator used in the present invention, where A is a front view, B is an explanatory diagram of the operation in the open state, and C is a diagram showing the dehydrator used in the present invention. 4 is a partially detailed view showing the fixed state of the furnace cloth, FIG. 5 is a Y-Y line arrow view of FIG. 3B, and FIG. 6 is a cross-sectional view of A perspective view of a box used for suppression, FIGS. 7 and 8, are from a book showing other examples of the embodiment. 1... Raw water liquid storage tank 2... Pressure tank 3...
,, pump 600. Lepeller 7...air supply pipe
9... Exhaust pipe 11... Dehydration pipe 12... Raw solution outflow pipe identification...
Drain pipe 1st...Between the wash water inflow pipe, field...
・-Cloth 4...Punching metal 6°°° basket
:29... - Excess liquid storage tank 30, - Compressor 32-1 Overflow pipe Patent applicant Kitagawa Iron Works Co., Ltd. Figure 1
Claims (1)
備える炉布を通して脱水し、この脱水された固形分を脱
水筒から取除くようになす脱水機において、前記ｐ布が
脱水工程で通過する水分の流れ方向と反対する方向から
の洗浄水により洗浄されて、その目詰りが開放されるよ
うになすことを特徴とする脱水機炉布の洗浄方法。(1) In a dehydrator in which a material to be treated is press-fitted into a dehydration cylinder, the water is dehydrated through a furnace cloth provided on the peripheral wall, and the dehydrated solid content is removed from the dehydration cylinder, the P cloth is dehydrated. A method for cleaning a dehydrator furnace cloth, characterized in that the cloth is cleaned with cleaning water from a direction opposite to the flow direction of water passing through the process, so that the clogged cloth is released.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56175920A JPS5879511A (en) | 1981-11-02 | 1981-11-02 | Washing method for filter cloth of dehydrator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56175920A JPS5879511A (en) | 1981-11-02 | 1981-11-02 | Washing method for filter cloth of dehydrator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5879511A true JPS5879511A (en) | 1983-05-13 |
| JPH04682B2 JPH04682B2 (en) | 1992-01-08 |
Family
ID=16004553
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56175920A Granted JPS5879511A (en) | 1981-11-02 | 1981-11-02 | Washing method for filter cloth of dehydrator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5879511A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59180710U (en) * | 1983-05-18 | 1984-12-03 | 株式会社西原環境衛生研究所 | Filtration chamber structure of sewage filtration equipment |
| JPH0232907U (en) * | 1988-08-18 | 1990-03-01 | ||
| US7892421B2 (en) | 2003-06-05 | 2011-02-22 | Aqua-Aerobic Systems, Inc. | Stationary cloth media filtration and self-aligning backwash assembly |
| US9776108B2 (en) | 2003-06-05 | 2017-10-03 | Aqua-Aerobic Systems, Inc. | Stationary cloth media filtration |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5230741A (en) * | 1975-09-05 | 1977-03-08 | Hitachi Seiko Kk | Automatic profiling device provided with protective circuit device |
| JPS53119472A (en) * | 1977-03-26 | 1978-10-18 | Kouji Mori | Automatic dehydrator of splitter cylinder type |
-
1981
- 1981-11-02 JP JP56175920A patent/JPS5879511A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5230741A (en) * | 1975-09-05 | 1977-03-08 | Hitachi Seiko Kk | Automatic profiling device provided with protective circuit device |
| JPS53119472A (en) * | 1977-03-26 | 1978-10-18 | Kouji Mori | Automatic dehydrator of splitter cylinder type |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59180710U (en) * | 1983-05-18 | 1984-12-03 | 株式会社西原環境衛生研究所 | Filtration chamber structure of sewage filtration equipment |
| JPH0232907U (en) * | 1988-08-18 | 1990-03-01 | ||
| JPH046803Y2 (en) * | 1988-08-18 | 1992-02-25 | ||
| US7892421B2 (en) | 2003-06-05 | 2011-02-22 | Aqua-Aerobic Systems, Inc. | Stationary cloth media filtration and self-aligning backwash assembly |
| US9776108B2 (en) | 2003-06-05 | 2017-10-03 | Aqua-Aerobic Systems, Inc. | Stationary cloth media filtration |
| AU2011200560B2 (en) * | 2005-03-22 | 2011-12-22 | Aqua-Aerobic Systems, Inc. | Stationary cloth media filtration and self-aligning backwash assembly |
| KR101176687B1 (en) * | 2005-03-22 | 2012-08-23 | 아쿠아-에어로빅 시스템즈, 인코포레이티드 | Stationary cloth media filtration and self-aligning backwash assembly |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04682B2 (en) | 1992-01-08 |
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