JPH09263979A - Cleaning device - Google Patents
Cleaning deviceInfo
- Publication number
- JPH09263979A JPH09263979A JP7470196A JP7470196A JPH09263979A JP H09263979 A JPH09263979 A JP H09263979A JP 7470196 A JP7470196 A JP 7470196A JP 7470196 A JP7470196 A JP 7470196A JP H09263979 A JPH09263979 A JP H09263979A
- Authority
- JP
- Japan
- Prior art keywords
- tank
- cleaning
- filter medium
- cleaning liquid
- liquid
- 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.)
- Pending
Links
Landscapes
- Cleaning By Liquid Or Steam (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、金属ストリップ
等の物品を洗浄する洗浄装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cleaning device for cleaning articles such as metal strips.
【０００２】[0002]
【従来の技術】例えば、冷延鋼板製造工程において、ア
ルカリ洗剤を用いて冷延鋼板を洗浄する設備は、専用ク
リーニング設備、連続焼成設備、めっき前処理設備等の
多数のラインおよび設備で採用されている。アルカリ洗
浄液は、攪拌すれば発泡するが、発泡の程度は攪拌を強
く行う程多くなる。そして、発泡の原因は種々存在する
が、例えば、ストリップが大気中から洗浄液中に侵入す
る際、ストリップ表面の空気が、ストリップの進行に随
伴して洗浄液中に巻き込まれて泡を生成するが、ストリ
ップの速度が速い程、この現象は助長される。また、洗
浄タンク内の洗浄液もストリップの進行方向にある厚さ
をもって層状に運ばれ、ストリップの速度が速い場合
は、洗浄タンクの液レベルは入側と出側で差が生じ、重
力の作用により所定のレベル差で安定する。この際、ス
トリップの進行方向に運ばれた層状の洗浄液は、タンク
出側に衝突し入側に戻され、この攪拌により泡が発生す
る。2. Description of the Related Art For example, in a cold-rolled steel sheet manufacturing process, equipment for washing cold-rolled steel sheet with an alkaline detergent is used in many lines and equipment such as dedicated cleaning equipment, continuous firing equipment, and plating pretreatment equipment. ing. The alkali cleaning liquid foams when it is stirred, but the degree of foaming increases with stronger stirring. Then, although there are various causes of foaming, for example, when the strip enters the cleaning liquid from the atmosphere, the air on the surface of the strip is entrained in the cleaning liquid along with the progress of the strip to generate bubbles, The higher the strip speed, the more this phenomenon is promoted. In addition, the cleaning liquid in the cleaning tank is also conveyed in layers with a certain thickness in the traveling direction of the strip, and when the strip speed is high, the liquid level in the cleaning tank differs between the inlet side and the outlet side, and due to the effect of gravity. Stable with a predetermined level difference. At this time, the layered cleaning liquid carried in the traveling direction of the strip collides with the tank outlet side and is returned to the inlet side, and bubbles are generated by this stirring.
【０００３】洗浄設備には、洗浄タンクの液面を一定に
保つためのオーバーフロー口と称する戻り口が設けられ
ており、オーバーフローした洗浄液はオーバーフロー
口、戻り配管を通って下方の循環タンクに戻される。循
環タンクに戻される液は、泡混じりの洗浄液であり、こ
の泡混じりの洗浄液がそのまま循環タンクに混入するた
め、循環タンクは泡で溢れタンク外に溢れ出る状況が発
生する。The cleaning equipment is provided with a return port called an overflow port for keeping the liquid level of the cleaning tank constant, and the overflowed cleaning liquid is returned to the lower circulation tank through the overflow port and the return pipe. . The liquid returned to the circulation tank is a foam-containing cleaning liquid, and the foam-containing cleaning liquid is mixed into the circulation tank as it is, so that the circulation tank overflows with bubbles and overflows outside the tank.
【０００４】この循環タンクの泡発生を防止する技術と
して、特開平４−３７１５９１号が公開されている。こ
の技術は、図３に示すように、洗浄タンク２２のオーバ
ーフロー口２７と循環タンク３０を連絡する戻り管２８
の途中に、１個または複数個の上下方向に湾曲したＵ字
管２９を設けることで、Ｕ字管の堰により戻り管２８中
の洗浄液の泡２６と液２４を分離でき、泡２６が循環タ
ンク３０に入るのを抑えることができる。また、Ｕ字管
２９の堰により、オーバーフロー口２７から循環タンク
３０へ落下する洗浄液の落差が減少するので、循環タン
ク３０内で新たに泡が発生するのを抑えることができる
ものとしている。しかし、この技術では以下に述べるよ
うな問題がある。即ち、洗浄タンク２２中の洗浄液２４
は洗浄に供される時間の経過に伴い、洗浄成分の濃度低
下に加えて、鉄粉、不鹸化性油、不溶性金属石鹸、石鹸
等の不純物を多量に含むようになって洗浄力が低下する
ため、新液と入れ替える必要が生じる。このとき、新液
の補給と同時に、それまで使用してきた大量の液が泡混
じりの状態で一度に、オーバーフロー口２７から戻り管
２８に流入し、循環タンクは泡で溢れタンク外に溢れ出
る状況が発生する。Japanese Unexamined Patent Publication No. 4-371591 has been disclosed as a technique for preventing the generation of bubbles in the circulating tank. As shown in FIG. 3, this technique uses a return pipe 28 that connects the overflow port 27 of the cleaning tank 22 and the circulation tank 30.
By providing one or a plurality of U-shaped pipes 29 curved in the vertical direction in the middle of the process, the weir of the U-shaped pipe can separate the bubbles 26 of the cleaning liquid and the liquid 24 in the return pipe 28, and the bubbles 26 circulate. It is possible to suppress entry into the tank 30. Further, since the weir of the U-shaped pipe 29 reduces the drop of the cleaning liquid that drops from the overflow port 27 to the circulation tank 30, it is possible to suppress the generation of new bubbles in the circulation tank 30. However, this technique has the following problems. That is, the cleaning liquid 24 in the cleaning tank 22
Is, as time passes for cleaning, in addition to decreasing the concentration of cleaning components, iron powder, unsaponifiable oil, insoluble metal soap, soaps, and other impurities are contained in large amounts and the cleaning power decreases. Therefore, it is necessary to replace it with a new solution. At this time, at the same time as the replenishment of the new liquid, a large amount of the liquid that has been used up to that time flows into the return pipe 28 from the overflow port 27 at a time in a state of foam mixing, and the circulation tank overflows with bubbles and overflows to the outside of the tank. Occurs.
【０００５】また、この他の洗浄液の消泡に関する従来
技術としては、泡の表面に超音波を照射して音響エネル
ギーによって泡を破壊する方法、液体や気体のスプレー
を噴射して液体や気体の運動エネルギーで泡を破壊する
方法、加熱・冷却や加圧・減圧による泡中の気体の膨張
・収縮作用で泡を破壊する方法、メッシュ状の金網を通
過させる或いは、旋回羽根に衝突させることによる泡と
衝突させる物体との間に生じる剪断力によって泡を破壊
する方法があるが、いずれも消泡効率が低く、ランニン
グコストがかかり過ぎとか、装置構成が複雑になるとい
う問題がある。Other conventional techniques for defoaming the cleaning liquid include a method of irradiating the surface of the foam with ultrasonic waves to destroy the foam with acoustic energy, and a method of spraying a liquid or gas to spray the liquid or gas. By destroying bubbles with kinetic energy, destroying bubbles by expanding / contracting gas in the bubbles by heating / cooling or pressurizing / depressing, passing through mesh wire mesh or colliding with swirling blades There is a method of destroying a bubble by a shearing force generated between the bubble and an object to be collided, but both have a problem that the defoaming efficiency is low, running cost is too high, and the device configuration is complicated.
【０００６】[0006]
【発明が解決しようとする課題】泡が循環タンクから溢
れ出ると、アルカリ洗浄液がそのまま捨てられることに
なるので不経済であり、また泡がタンク周辺に溢れ環境
上も好ましくない。そのため、ストリップの通板速度を
落として洗浄タンク内の洗浄液の攪拌を抑える方法が通
常採用されていた。通板速度を落とすことは生産性の低
下となり、洗浄設備における循環タンクの泡発生防止
は、長年の課題となっている。When bubbles overflow from the circulation tank, the alkaline cleaning liquid is discarded as it is, which is uneconomical, and the bubbles overflow around the tank, which is also unfavorable for the environment. Therefore, the method of suppressing the stirring of the cleaning liquid in the cleaning tank by reducing the strip passing speed is usually adopted. Decreasing the stripping speed lowers the productivity, and preventing bubbles from forming in the circulating tank in the cleaning equipment has been a long-standing issue.
【０００７】[0007]
【課題を解決するための手段】本発明は、上記の問題を
以下の装置によって解決する。The present invention solves the above problems by the following devices.
【０００８】第１の装置は、発泡性洗浄液で金属ストリ
ップ等の物品を洗浄する洗浄タンクの下方に洗浄液を循
環する循環タンクを配置した洗浄装置において、前記洗
浄タンクから前記循環タンクに洗浄液を戻す配管の途中
に濾過材を収容した濾過材タンクを設け、洗浄液が前記
濾過材を通過するように構成した洗浄装置である。The first device is a cleaning device in which a circulating tank for circulating the cleaning liquid is disposed below a cleaning tank for cleaning articles such as metal strips with a foaming cleaning liquid, and the cleaning liquid is returned from the cleaning tank to the circulating tank. A cleaning device in which a filter medium tank containing a filter medium is provided in the middle of a pipe so that a cleaning liquid passes through the filter medium.
【０００９】第２の装置は、第１の装置において、濾過
材タンクを複数設けた装置である。The second device is the same as the first device except that a plurality of filter medium tanks are provided.
【００１０】「作用」 第１の装置：洗浄液が濾過材を通過するとき、泡と洗浄
液の比重の違いにより気液分離されるとともに、泡と濾
過材表面との接触による剪断力の作用で泡が破壊され
る。"Operation" First device: When the cleaning liquid passes through the filter medium, gas and liquid are separated due to the difference in specific gravity between the foam and the cleaning liquid, and the bubbles are generated by the action of the shearing force due to the contact between the bubbles and the surface of the filter medium. Is destroyed.
【００１１】第２の装置：濾過材タンクを複数設け、一
定時間間隔で洗浄液を通過させるタンクと逆洗を行うタ
ンクを交互に切り替えることにより、濾過および気液分
離能力を維持しながら、効果的に泡を破壊（消泡）する
ことができる。Second apparatus: A plurality of filter media tanks are provided, and the tank for passing the cleaning liquid and the tank for backwashing are alternately switched at a constant time interval, thereby effectively maintaining the filtration and gas-liquid separation capabilities. The bubbles can be destroyed (defoaming).
【００１２】[0012]
【発明の実施の形態】本発明の実施の形態を図面に基づ
いて以下に説明する。図１は、本発明装置の実施の形態
を示す構成図、図２は、図１のＡ部の拡大縦断面図であ
る。図１、２において、１は鋼帯等の金属ストリップ、
２は洗浄タンク、３は洗浄タンク内のシンクロール、４
は洗浄タンク内の電極である。５は洗浄タンク２内のア
ルカリ洗浄液、７は洗浄タンクの液面６上に形成された
泡である。８は洗浄タンク２の液面６を一定レベルに保
つためのオーバーフロー口である。オーバーフローした
泡混じりの洗浄液５は、オーバーフロー口８から戻り管
９を通って下方の循環タンク１１に落下する。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. 1 is a configuration diagram showing an embodiment of the device of the present invention, and FIG. 2 is an enlarged vertical sectional view of a portion A of FIG. 1 and 2, 1 is a metal strip such as a steel strip,
2 is a washing tank, 3 is a sink roll in the washing tank, 4
Is an electrode in the wash tank. Reference numeral 5 is an alkali cleaning liquid in the cleaning tank 2, and 7 is a bubble formed on the liquid surface 6 of the cleaning tank. Reference numeral 8 is an overflow port for keeping the liquid surface 6 of the cleaning tank 2 at a constant level. The overflowed cleaning liquid 5 containing bubbles drops from the overflow port 8 through the return pipe 9 and into the circulation tank 11 below.
【００１３】本発明では、戻り管９の途中に、濾過材１
２を収容した一対の濾過材タンク１０ａ，１０ｂを設け
ている。濾過材タンクの上流側において、戻り管９は、
分岐管９ａ，９ｂに分岐され、分岐管９ａは濾過材タン
ク１０ａに、分岐管９ｂは濾過材タンク１０ｂに接続さ
れている。分岐管の下端部は分岐した複数の排出口を有
しており、分岐管９ａ，９ｂの下端部は、それぞれの濾
過材タンクの濾過材１２ａ、１２ｂ中に位置している。
濾過材タンクの下流側において、濾過材タンク１０ａは
分岐管９ｃに、濾過材タンク１０ｂは分岐管９ｄに接続
し、これらの分岐管は下流側戻り管９に集合している。
濾過材タンクは、その中央部分に濾過材を収容し、濾過
材の上方および下方は空間となっている。濾過材タンク
１０ａ，１０ｂは、その上部空間に連通する排気管１
４、１４を有しており、排気管１４、１４は途中には弁
１５、１５が設けられている。なお、図１には、分岐管
の下端部が、濾過材の中に設けた例を示したが、分岐管
の下端部を濾過材タンクの上部空間に位置させてもよ
い。In the present invention, the filter medium 1 is provided in the middle of the return pipe 9.
A pair of filter medium tanks 10a and 10b accommodating 2 are provided. On the upstream side of the filter medium tank, the return pipe 9 is
It is branched into branch pipes 9a and 9b, the branch pipe 9a is connected to the filter medium tank 10a, and the branch pipe 9b is connected to the filter medium tank 10b. The lower end of the branch pipe has a plurality of branched outlets, and the lower ends of the branch pipes 9a and 9b are located in the filter media 12a and 12b of the respective filter media tanks.
On the downstream side of the filter medium tank, the filter medium tank 10a is connected to the branch pipe 9c, the filter medium tank 10b is connected to the branch pipe 9d, and these branch pipes are gathered in the downstream return pipe 9.
The filter medium tank accommodates the filter medium in its central portion, and has spaces above and below the filter medium. The filter medium tanks 10a and 10b have an exhaust pipe 1 communicating with the upper space thereof.
The exhaust pipes 14 and 14 are provided with valves 15 and 15 on the way. Note that, although FIG. 1 shows an example in which the lower end of the branch pipe is provided in the filter medium, the lower end of the branch pipe may be located in the upper space of the filter medium tank.
【００１４】逆洗配管１３、１３が、下流側の分岐管９
ｃ，９ｄおよび上流側の分岐管９ａ，９ｂに接続されて
いる。各逆洗配管は、途中に弁を有している。逆洗水
は、下流側逆洗配管１３から下流側分岐管を介して濾過
材タンクに流入し、上流側分岐管を介して上流側逆洗配
管１３に排出される。The backwash pipes 13, 13 are the branch pipes 9 on the downstream side.
c, 9d and the branch pipes 9a, 9b on the upstream side. Each backwash pipe has a valve in the middle. The backwash water flows from the downstream backwash pipe 13 into the filter medium tank via the downstream branch pipe, and is discharged to the upstream backwash pipe 13 via the upstream branch pipe.
【００１５】泡混じりの洗浄液は、上流側戻り管９を流
下し、分岐管９ａ，９ｂを介して濾過材タンク１０ａ，
１０ｂの濾過材１２ａ，１２ｂ中に流入する。濾過材を
通過する間に泡混じりの洗浄液の泡が破壊されるととも
に気液分離され、気体は濾過材タンクの上部空間に溜ま
り、分離された洗浄液は、分岐管９ｃ，９ｄおよび下流
の戻り管９を経由して循環タンク１１に流下する。循環
タンク１１の洗浄液は、再び循環ポンプ１４により洗浄
タンク２に戻される。濾過材タンクの上部空間に溜まっ
た空気を主成分とする気体は、溜め過ぎると再び、泡発
生の原因となるので、一定時間毎に大気中に放散され
る。The cleaning liquid containing bubbles flows down through the upstream return pipe 9 and is passed through the branch pipes 9a and 9b to filter medium tank 10a,
It flows into the filter media 12a and 12b of 10b. While passing through the filter medium, the bubbles of the cleaning liquid containing bubbles are destroyed and gas-liquid separation is performed, the gas is accumulated in the upper space of the filter medium tank, and the separated cleaning liquid is branched pipes 9c and 9d and the downstream return pipe. It flows down to the circulation tank 11 via 9. The cleaning liquid in the circulation tank 11 is returned to the cleaning tank 2 by the circulation pump 14 again. The gas containing air as a main component, which has accumulated in the upper space of the filter medium tank, causes bubbles again when accumulated too much, and is therefore diffused into the atmosphere at regular intervals.
【００１６】濾過材は、洗浄液の濾過を継続している
と、洗浄液中の鉄粉、不鹸化性油、不溶性金属石鹸、石
鹸等の不純物が濾過材の表面に付着し、洗浄液の通過量
が減少してくる。洗浄液の通過量を下限値以上に維持す
るため、一定時間間隔で濾過材の逆洗を行う。この逆洗
は、一方の濾過材タンク１０ａを逆洗している間、他方
の濾過材タンク１０ｂで洗浄液の濾過を行い、濾過材タ
ンク１０ａの逆洗が完了したら、濾過材タンク１０ａで
洗浄液の濾過を行い、他方の濾過材タンク１０ｂを逆洗
するというように交互逆洗を行い、両濾過材タンクの逆
洗が完了したら、両濾過材タンクで洗浄液の濾過を行
う。[0016] When the cleaning liquid is continuously filtered, impurities such as iron powder, non-saponifiable oil, insoluble metal soap, soap, etc. in the cleaning liquid adhere to the surface of the filtering liquid, and the amount of the cleaning liquid passing through is decreased. It is decreasing. In order to maintain the passing amount of the cleaning liquid at or above the lower limit value, the filter medium is backwashed at regular intervals. In this backwashing, while backwashing one filter medium tank 10a, the cleaning solution is filtered in the other filter medium tank 10b, and when the backwashing of the filter medium tank 10a is completed, the wash solution is washed in the filter medium tank 10a. Alternate backwashing is performed such that filtration is performed and the other filtration material tank 10b is backwashed. When the backwashing of both filtration material tanks is completed, the washing liquid is filtered in both filtration material tanks.
【００１７】この交互逆洗のとき、洗浄液を通している
濾過材タンクでは、一定の気液分離性能および一定の濾
過時間を確保するため、洗浄液の空塔速度を小さくする
こと、即ち洗浄液の通過流速を遅くさせているので、液
体の下降流と泡の上昇流の違いによって気液分離が促進
されるとともに、消泡効果も向上する。At the time of this alternate backwash, in the filter medium tank through which the washing liquid is passed, the superficial velocity of the washing liquid is made small, that is, the passing velocity of the washing liquid, in order to ensure a constant gas-liquid separation performance and a constant filtration time. Since it is slowed down, gas-liquid separation is promoted by the difference between the downward flow of liquid and the upward flow of bubbles, and the defoaming effect is also improved.
【００１８】洗浄液５の濾過材１２への通液方法は、洗
浄液の発泡性を考慮して、洗浄液が均等に濾過材層に浸
透し且つ流速が遅くなるように管末端部を多数分岐して
配置したり、管径を末広がりにすることが望ましい。但
し、曲管部を増やすことは管内の洗浄液の流れを乱し、
より発泡を促進させる恐れもあるので、曲率を大きくす
ることが望ましい。さらに、上記末端部の位置を濾過材
層の内部に配置すれば、泡は末端部から流出した瞬間か
ら濾過材層に浸透して行くのに対し、濾過材上方の空間
に末端部を配置する場合は、濾過材の上面の泡が滞留
し、濾過材に浸透する速度が小さい。従って、末端部の
位置を濾過材層の内部に配置す方が、濾過材上方の空間
に末端部を配置する場合に比べて、消泡効果を高めるこ
とができる。また、濾過材を加熱、冷却する手段を付加
すれば、泡中の気体の膨張、収縮作用で泡の破壊が促進
され、より一層消泡効果を高めることができる。The method for passing the cleaning liquid 5 through the filter medium 12 is to take the foaming property of the cleaning liquid into consideration so that the cleaning liquid is evenly permeated into the filter medium layer and the multiple ends of the pipe are branched so that the flow velocity becomes slow. It is desirable to arrange them or to make the pipe diameter wider. However, increasing the number of curved pipes disturbs the flow of cleaning liquid in the pipes,
It is desirable to increase the curvature because it may further promote foaming. Further, if the position of the above-mentioned end portion is arranged inside the filter medium layer, bubbles permeate into the filter medium layer from the moment when it flows out from the end portion, whereas the end portion is arranged in the space above the filter medium. In this case, the bubbles on the upper surface of the filter medium stay and the rate of permeation into the filter medium is low. Therefore, the defoaming effect can be enhanced by disposing the position of the end portion inside the filter medium layer, as compared with the case of disposing the end portion in the space above the filter medium. Further, if a means for heating and cooling the filter medium is added, the expansion and contraction of the gas in the foam promotes the destruction of the foam, and the defoaming effect can be further enhanced.
【００１９】濾過材タンク１０の数は、洗浄液の発泡状
況に応じて決められ、例えば、発泡状況が顕著でなけれ
ば、１個の濾過材タンクに通液し、濾過サイクルと逆洗
サイクルとを交互に切り替えるようにし、発泡状況が顕
著であれば、濾過材タンク１０の数を増やすとよい。The number of the filter medium tanks 10 is determined according to the foaming condition of the cleaning liquid. For example, if the foaming condition is not remarkable, the liquid is passed through one filter medium tank, and the filtration cycle and the backwash cycle are performed. The number of the filter medium tanks 10 may be increased if the foaming state is remarkable by alternately switching.
【００２０】また、濾過材タンク１０の濾過サイクルと
逆洗サイクルの切り替え時間間隔は、図示しないサイク
ル切替装置に切替時間設定タイマ、或いは、濾過材タン
ク１０内の濾過材１２の上面に泡が滞留する場合を想定
し、濾過材タンク１０の上方空間に、液および泡に応答
する超高感度の電極式レベル計と液にしか応答しない通
常の電極式レベル計とを組み合わせて設けることによ
り、濾過材タンク１０内の泡の滞留状況を検知して、例
えば、超高感度の電極式レベル計が泡を検知したとき
に、濾過サイクルにある濾過材タンク１０の濾過材１２
の消泡、濾過能力が限界に達したとみなして、逆洗サイ
クルへの切替指令を発信するようにすることが、望まし
い。The switching time interval between the filtration cycle and the backwash cycle of the filter medium tank 10 is set by a switch time setting timer in a cycle switching device (not shown), or bubbles are accumulated on the upper surface of the filter medium 12 in the filter medium tank 10. In consideration of the case where the filter material tank 10 is installed, an ultra-sensitive electrode type level meter that responds to liquids and bubbles and a normal electrode type level meter that responds only to liquids are provided in combination in the space above the filter medium tank 10. When the retention state of bubbles in the material tank 10 is detected and, for example, the super-sensitive electrode type level meter detects bubbles, the filter material 12 of the filter material tank 10 in the filtration cycle is in the filtration cycle.
It is desirable to issue a command to switch to the backwash cycle, considering that the defoaming and filtering capabilities of (1) have reached the limit.
【００２１】本発明装置に使用する濾過材としては、泡
との接触によるせん断力の作用で泡の破壊を行うため
に、粒状のものが望ましく、また、逆洗サイクル中に濾
過材タンクから濾過材が流出するのを防ぐために、見掛
け比重（濾過材間の空間は水が満たされていると仮定）
が、約１．０〜２．０である物質が望ましい。The filter material used in the apparatus of the present invention is preferably a granular material in order to destroy the foam by the action of a shearing force due to contact with the foam, and it is also filtered from the filter material tank during the backwash cycle. Apparent specific gravity to prevent the material from flowing out (assuming the space between the filter materials is filled with water)
However, a substance having a ratio of about 1.0 to 2.0 is desirable.
【００２２】これらの条件を満足するものとしては、サ
ンドと呼ばれる砂やグラベルと呼ばれる砂利等があり、
さらに、洗浄液中の鉄粉、不鹸化性油、不溶性金属石
鹸、石鹸等の不純物を除去し、濾過材タンク以降の清浄
度を高く保つためには、アンスラサイトと呼ばれる石炭
を前記の濾過材と組み合わせて使用してもよい。なお、
液の濾過材通過平均流速は、１ｃｍ／ｓｅｃ程度が望ま
しいので、例えば、濾過する洗浄液の量が６０ｍ3 ／ｈ
の場合、濾過材の断面積は、１．４ｍ2 となる。Sands called sand, gravel called gravel, etc. satisfy these conditions.
Further, in order to remove impurities such as iron powder, unsaponifiable oil, insoluble metal soap, soap, etc. in the cleaning liquid and maintain high cleanliness after the filter medium tank, coal called anthracite is used as the filter medium. You may use it in combination. In addition,
Since it is desirable that the average flow velocity of the liquid through the filter medium is about 1 cm / sec, for example, the amount of the cleaning liquid to be filtered is 60 m 3 / h.
In the case of, the cross-sectional area of the filter medium is 1.4 m 2 .
【００２３】[0023]
【発明の効果】本発明装置は、戻り配管の途中に濾過材
を収納した濾過材タンクを設け、泡混じりの洗浄液を濾
過するようにしたから、濾過材タンクで、泡が効果的に
破壊されるとともに、気液分離が完全に行われる。ま
た、濾過材タンクを複数設け、一定時間間隔で交互逆洗
を行うことにより、濾過、気液分離能力を維持し、消泡
効率の高い洗浄装置を得ることができる。The apparatus of the present invention is provided with a filter medium tank containing a filter medium in the middle of the return pipe to filter the cleaning liquid containing bubbles, so that the bubbles are effectively destroyed in the filter medium tank. At the same time, gas-liquid separation is completed. Further, by providing a plurality of filter medium tanks and performing alternate backwashing at regular time intervals, it is possible to obtain a washing apparatus having high defoaming efficiency while maintaining the filtration and gas-liquid separation capabilities.
【００２４】また、濾過材の濾過作用により、洗浄液中
の鉄粉、不鹸化性油、不溶性金属石鹸、石鹸等の不純物
を除去するので、濾過材タンク以降の戻り配管内部に前
記不純物が堆積、付着することによる配管詰まりを防止
することができる。Further, since impurities such as iron powder, unsaponifiable oil, insoluble metal soap, soap, etc. in the cleaning liquid are removed by the filtering action of the filter medium, the impurities are accumulated inside the return pipe after the filter medium tank, It is possible to prevent the clogging of the pipe due to the adhesion.
【図１】本発明装置の実施の形態を示す構成図である。FIG. 1 is a configuration diagram showing an embodiment of a device of the present invention.
【図２】図１のＡ部の拡大縦断面図である。FIG. 2 is an enlarged vertical sectional view of a portion A in FIG.
【図３】従来装置の構成図である。FIG. 3 is a configuration diagram of a conventional device.
２ 洗浄タンク ５ 洗浄液 ７ 泡 ８ オーバーフロー口 ９ 戻り管 ９ａ，９ｂ，９ｃ，９ｄ 戻り管の分岐管 １０，１０ａ，１０ｂ 濾過材タンク １１ 循環タンク １２，１２ａ，１２ｂ 濾過材 2 Cleaning tank 5 Cleaning liquid 7 Foam 8 Overflow port 9 Return pipe 9a, 9b, 9c, 9d Branch pipe of return pipe 10, 10a, 10b Filter medium tank 11 Circulation tank 12, 12a, 12b Filter medium
Claims (2)
を洗浄する洗浄タンクの下方に洗浄液を循環する循環タ
ンクを配置した洗浄装置において、前記洗浄タンクから
前記循環タンクに洗浄液を戻す配管の途中に濾過材を収
容した濾過材タンクを設け、洗浄液が前記濾過材を通過
するように構成したことを特徴とする洗浄装置。1. A cleaning device in which a circulation tank for circulating a cleaning liquid is disposed below a cleaning tank for cleaning articles such as metal strips with a foaming cleaning liquid, in the middle of a pipe for returning the cleaning liquid from the cleaning tank to the circulation tank. A cleaning apparatus comprising a filter medium tank containing a filter medium, the cleaning liquid passing through the filter medium.
の洗浄装置。2. The cleaning device according to claim 1, wherein a plurality of filter media tanks are provided.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7470196A JPH09263979A (en) | 1996-03-28 | 1996-03-28 | Cleaning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7470196A JPH09263979A (en) | 1996-03-28 | 1996-03-28 | Cleaning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH09263979A true JPH09263979A (en) | 1997-10-07 |
Family
ID=13554804
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7470196A Pending JPH09263979A (en) | 1996-03-28 | 1996-03-28 | Cleaning device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH09263979A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100456466B1 (en) * | 2002-08-30 | 2004-11-10 | 주식회사 포스코 | An apparatus for removing the foam in cleaning line of strip |
| KR100725324B1 (en) * | 2005-12-23 | 2007-06-07 | 주식회사 포스코 | Apparatus for foam removal in alkaline cleaning process of metal strip and its method |
| JP2007283166A (en) * | 2006-04-13 | 2007-11-01 | Rinnai Seiki Kk | Washing apparatus |
| JP2013122078A (en) * | 2011-12-12 | 2013-06-20 | Nippon Steel & Sumikin Engineering Co Ltd | Circulating equipment and defoaming method therefor |
-
1996
- 1996-03-28 JP JP7470196A patent/JPH09263979A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100456466B1 (en) * | 2002-08-30 | 2004-11-10 | 주식회사 포스코 | An apparatus for removing the foam in cleaning line of strip |
| KR100725324B1 (en) * | 2005-12-23 | 2007-06-07 | 주식회사 포스코 | Apparatus for foam removal in alkaline cleaning process of metal strip and its method |
| JP2007283166A (en) * | 2006-04-13 | 2007-11-01 | Rinnai Seiki Kk | Washing apparatus |
| JP4492813B2 (en) * | 2006-04-13 | 2010-06-30 | リンナイ精機株式会社 | Cleaning device |
| JP2013122078A (en) * | 2011-12-12 | 2013-06-20 | Nippon Steel & Sumikin Engineering Co Ltd | Circulating equipment and defoaming method therefor |
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