JPH07882A - Method for recovery of coating sludge by means of floating separation and its apparatus - Google Patents

Abstract

PURPOSE:To separate a coating sludge under non-viscous and fluent condition, to perform smoothly the separation process to recovery and discard and to keep the circulation water of a booth clean for a long time. CONSTITUTION:The surface layer part contg. coating sludge floating on the circulation water from a coating booth is sucked up through a tip with a function of sucking the surface layer part by means of a pump 5 to send it to a vibrational cylinder 6. Then, the sludge floating in a floating separation tank 12 is discharged into a discarding vehicle by means of a recovery device 14. A coating mist is desolvated and is made fluent by vigarous vibration when it passes through the vibrational cylinder wherein buffles 7 and 8 each with a hole 9 and 10 are alternatively piled up and as a number of ultrafine bubbles generated at the same time exhibit floating effect for making the sunk flowing mist float up, the whole booth is kept clean.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【産業上の利用分野】湿式塗装ブースの循環水にのって
回収されてくる塗料スラッジを発生段階において、循環
水から、脱溶剤して非粘性となったサラサラスラッジと
して、浮上分離回収させるための方法とその装置に関す
るもので、長期間に亘って循環水を汚水としないための
ものである。[Industrial application] In order to float and collect the paint sludge collected from the circulating water of the wet coating booth as a non-viscous, non-viscous, from the circulating water at the generation stage. The method and the device thereof for preventing the circulating water from being sewage for a long period of time.

【０００２】[0002]

【従来の技術】周知の如く、湿式ブースでの余剰スプレ
ーミストを洗浄水に回収させる時、塗料スラッジとして
浮上するものと沈澱するものが出来るが、とにかく粘着
性があっては回収が困難である。従って、薬品を大量に
使って凡て沈澱させ、且つ非粘性にする技術が進んでい
るが、回収については困難な作業となり機械化は難しい
ので、ブース自体を含め、汚れがひどく、悪臭をもつも
のが多いのが現状である2. Description of the Related Art As is well known, when recovering excess spray mist in a wet booth into washing water, some paint sludge may float and others may precipitate, but it is difficult to recover it due to stickiness. . Therefore, technologies for making large amounts of chemicals to precipitate and making them non-viscous are in progress, but collection is difficult and mechanization is difficult. Therefore, the booth itself is extremely dirty and has a bad odor. The current situation is that there are many

【０００３】[0003]

【発明が解決しようとする課題】浮上分離回収システム
が、望ましい事であるとは誰しもが思う事ではあるが、
塗装ブース設計者は塗料ミストをいかに洗浄水にとりこ
むかを念頭において設計しており、浮上分離回収のため
に考慮してあるものでないので、ブースからの回収水に
全量浮上してくる事はまづないものと思はねばならな
い。回収水の中にもぐって流れてくるもの、ブース内に
残り、あと徐々に排出される分、遊泳分とあくまでも残
る部分とに分かれる本発明では、回収水の内から、浮上
回収分、遊泳回収分の一部を発生段階で分離回収を果た
し、以後は長時間運転によって、遊泳分の浮上回収を果
たしてブース循環水の清浄化を目指すものである回収す
る時には、ミストがサラサラ非粘性である事がこの場合
の必須条件になってくるAlthough it is a matter for everybody that a flotation separation and recovery system is desirable,
The paint booth designer has designed with consideration for how to incorporate the paint mist into the wash water, and it is not taken into consideration for the floating separation collection.Therefore, it is not possible that the whole amount floats in the collected water from the booth. You must think that it does not break. In the present invention, the water that flows around in the recovered water, the amount that remains in the booth and is gradually discharged, and the swimming part and the remaining part are separated according to the present invention. Part of the mist is separated and collected at the generation stage, and after that, it is intended to float the swimming part and clean the circulating water of the booth by operating for a long time.When collecting, the mist is smooth and non-viscous. Becomes a mandatory condition in this case

【０００４】[0004]

【課題を解決するための手段】塗料ミスト自体は油分を
持っているので、本来はっ水性である。従って水面に着
水して各々個々に浮上しており、水をかぶっても少量の
空気と共に泡の核となって存在し、水表面に泡がはじけ
た時は浮上ミストとして流れて行くのが、本来の姿であ
る。本発明は、この泡を激しく水中で振蕩してやる事に
よって、泡内雰囲気に著しい変化、プラス圧マイナス
圧、ねじれよじれ、膨張収縮を数〜数十回くり返させ
て、ミストの持つ溶剤分を泡外の洗浄水に放出させてミ
ストを乾燥させる事によって非粘性化し、分離回収を容
易にするものである。従って本発明は、回収水の全量で
なくごく表層を流れる部分をポンプ（ ５）によって泡
と共に多少の空気を同時に汲み取り、それを直後の振蕩
筒（ ６）内に送りこんで、筒の内部で、激しく泡の振
蕩を行ってミストをサラサラにしてから分離浮上槽（１
２）に送り込み、ミストを分離浮上回収させ、残りの洗
浄水はミストを含まぬ超微細な泡を無数に含んだ清澄水
としてブース前面に戻すシステムに作り上げたのであ
る。泡は振蕩によって非常に微細にと変化し、沈んで流
れるミストと結びついて浮上する様になる[Means for Solving the Problems] Since the paint mist itself has oil content, it is originally water repellent. Therefore, it lands on the water surface and floats individually, and even if it is covered with water, it exists as a core of bubbles with a small amount of air, and when bubbles burst on the water surface, it flows as a floating mist. , As it should be. The present invention, by vigorously shaking this bubble in water, changes the atmosphere in the bubble remarkably, plus pressure minus pressure, twist twisting, expansion and contraction are repeated several to several tens of times, and the solvent component of the mist is bubbled. It is made non-viscous by releasing it to the outside washing water and drying the mist to facilitate separation and recovery. Therefore, according to the present invention, the pump (5) simultaneously pumps some air together with bubbles in a portion that flows through the surface layer rather than the whole amount of the recovered water, and sends it into the shaking tube (6) immediately after that, and inside the tube, Shake the bubbles vigorously to make the mist dry and then separate the floating tank (1
It was sent to 2) to separate and float the mist, and the rest of the wash water was made into a system that returns it to the front of the booth as clear water containing countless ultra-fine bubbles that do not contain mist. Bubbles change very finely by shaking and become associated with sinking and flowing mist.

【０００５】[0005]

【作用】周知の如く湿式塗装ブースは大きな排気ブロア
ーによって装置内に負圧を生じ、前面からの洗浄水の大
量の巻き上げと同時に、背面からの洗浄水の流れ出し部
分の構造について、ミストの浮上分離という観点から十
分に考へないといけない。As is well known, in a wet coating booth, a large exhaust blower creates a negative pressure in the apparatus, and at the same time a large amount of washing water is rolled up from the front side, the structure of the portion where the washing water flows out from the back side is floated and separated. From this point of view, we have to think carefully.

【図１】では流れ出し部分に続く循環流路（ １）に水
封壁（ ３）と蓋（ ２）を設置してあるので、装置内
からのミストの流れ出しが壁（ ３）まではスムーズに
浮遊しながら続く。この部分まで負圧で水位が上がって
いるので浮上ミストはここで停滞する事になる。したが
ってここに水位調節機能を持った吸い口（ ４）をおい
て常に表層部分の水を汲む事が出来る様にポンプ（
５）を設置する。これが発生段階で処理に入る事の意味
である。表層部分にはブースで発生した泡と塗料ミスト
があり、これを吸い込む時空気も同時に吸い込んで了う
が凡て泡となり、ミストも凡て泡の中に取り込まれた形
になる。但し泡の大きさは不揃いながらも大きく数ミリ
平均である。送り込まれて振蕩筒（ ６）を出る泡は微
細で１ミリから０．５ミリ直径で大半を占める様に変化
する。この変化の過程でミストのもつ溶剤は泡外の水の
中に取り込まれてミストはサラサラに変化し、浮上槽
（１２）に送られて浮上分離回収が容易になる。微細な
泡は沈んだミストに付着して浮上槽で浮上させる働きを
持つに適した大きさになっている。浮上槽（１２）の下
部に接線方向に水平に又は少し上向きにノズル（１１）
を取り付け、槽内に強い渦流を作り出し、軽い泡部分を
中心部分に集めて急速浮上が容易になる様に、又消泡も
迅速化されて、スラッジの形成がスムーズに行われる。
ミストを含まぬ無数の微細な泡はブースに戻るスラッジ
はサラサラで回収に際して器具に付着する様な事もな
く、従って機械化自動化が容易であり、長期に亘ってメ
ンテナンスフリーでいけるのである。本発明の最大の要
点は、以上述べた通り、振蕩筒（ ６）によってスラッ
ジがサラサラに変化すると云う作用にあると云へる。[Fig.1] In Fig. 1, since the water sealing wall (3) and the lid (2) are installed in the circulation flow path (1) following the outflow part, the outflow of mist from the inside of the device is smooth up to the wall (3). Continue floating. Since the water level has risen to negative pressure up to this point, the floating mist will stagnate here. Therefore, a suction port (4) with a water level adjusting function is placed here so that the pump (
Install 5). This means entering the process at the generation stage. There are bubbles and paint mist generated in the booth at the surface layer, and when sucking this, air is also sucked in at the same time, but it becomes all bubbles, and all the mist is in the form taken in the bubbles. However, the size of the bubbles is large even though they are not uniform, and the average is several millimeters. Bubbles fed in and out of the shaker tube (6) are fine and change to occupy most with a diameter of 1 mm to 0.5 mm. In the process of this change, the solvent contained in the mist is taken into the water outside the bubbles, and the mist changes into a smooth state and is sent to the flotation tank (12) to facilitate the flotation separation collection. The fine bubbles have a size suitable for adhering to the sinking mist and floating in the floating tank. Nozzle (11) horizontally or slightly upward in the tangential direction at the bottom of the flotation tank (12)
The sludge is formed smoothly by installing a vortex, creating a strong vortex in the tank, collecting the light foam part in the center part to facilitate rapid floating, and speeding up the defoaming.
The innumerable fine bubbles that do not contain mist return to the booth, and the sludge is smooth and does not adhere to the equipment when it is collected. Therefore, mechanization automation is easy and maintenance-free for a long time. It can be said that the most important point of the present invention is, as described above, the effect that sludge is changed into a smooth state by the shaking tube (6).

【０００６】[0006]

【実施例】以下本発明による塗料スラッジ浮上分離回収
装置の実施例について図面を参照して説明する。図１に
おいてブース背面出口に続く循環水槽（１）の蓋（
２）と水封壁（ ３）に囲まれた部分の表層水を吸い取
る吸い口（ ４）を浮力によって常時一定水位を保持で
きる様に設置しポンプ（ ５）を介して振蕩筒（ ６）
に水を送る。振蕩筒自体内径１５７ミリのステンレス製
パイプの中に、外径１５６ミリ厚さ１０ミリのポリエチ
レン製邪魔板（ ７）（ ８）夫々に７０ミリの孔（
９）（１０）を明け、６０ミリの間隔を保って１６段階
交互に積み上げた構造である。浮上槽（１２）は３００
ミリ外径のポリエチレン製パイプの上部に角形の分離浮
上部分（１３）を接合し、押し出し式回収装置（１４）
を組み付けてある。振蕩筒からの配管の先端ノズル部分
（１１）を浮上槽の下部に接線方向に且つ水平より少し
上向きに取り付ける。押し出し式回収装置は往きはスラ
ッジを押して行くが、帰りは上にあがって空中を帰って
きて始発点でスラッジの中にはいる。Embodiments of the paint sludge flotation / separation device according to the present invention will be described below with reference to the drawings. In Fig. 1, the lid of the circulating water tank (1) (
The suction port (4) for sucking the surface water in the part surrounded by 2) and the water sealing wall (3) is installed so that a constant water level can be always maintained by buoyancy, and the shaking tube (6) is installed via the pump (5).
Send water to. The shaking tube itself is a stainless steel pipe with an inner diameter of 157 mm, and a polyethylene baffle plate with an outer diameter of 156 mm and a thickness of 10 mm has a 70 mm hole (7) (8) in each.
9) It is a structure in which (10) is opened and 16 steps are alternately stacked with a space of 60 mm. Flotation tank (12) is 300
Extrusion-type recovery device (14) by joining a square separation floating part (13) to the upper part of a polyethylene pipe with a millimeter outer diameter.
Is assembled. The tip nozzle part (11) of the pipe from the shaking tube is attached to the lower part of the flotation tank in a tangential direction and slightly upward from the horizontal. The push-out type recovery device pushes sludge on the way, but on the way back, it goes up and returns in the air, and enters the sludge at the starting point.

【０００７】別実施例を図２に示す。吸い口（ ４）は
水位監視装置（１５）によって機械的に規定水位に位置
できる様にエアーシリンダーを備へている。振蕩筒は角
形で邪魔板は厚さ１０ミリのポリエチレン製板１８０ミ
リ×３００ミリの片側２０ミリを残して７０ミリの孔を
明け、夫々交互に６０ミリの間隔を持って１２段階積み
上げてある。浮上槽は鉄板製で深さ３００ミリ幅４５０
ミリ長さ９００ミリに作られ長手方向に斜めに分離板
（１７）がはいる。ノズル部分（１１）は上から縦には
いる。回収部分は水封になっており回転式回収装置（１
８）が組み付けてある。スラッジを分離した水は水封部
分の下をくぐってから水位調整堰板（１９）を越えてか
ら配管（２０）によってブース前面に戻る。Another embodiment is shown in FIG. The mouthpiece (4) is equipped with an air cylinder so that it can be mechanically positioned at a prescribed water level by a water level monitoring device (15). The shaking tube is square and the baffle plate is a 10 mm thick polyethylene plate 180 mm x 300 mm, leaving 20 mm on one side, leaving holes of 70 mm, and alternately stacking them in 12 steps at intervals of 60 mm. . The floating tank is made of iron plate and has a depth of 300 mm and a width of 450.
The separation plate (17) is installed diagonally in the longitudinal direction and is made 900 mm long. The nozzle portion (11) is inserted vertically from above. The collection part is water-sealed and the rotary collection device (1
8) is assembled. The water from which the sludge has been separated passes under the water-sealed portion, passes over the water level adjusting dam plate (19), and then returns to the front of the booth through the pipe (20).

【０００８】[0008]

【発明の効果】本発明による塗料スラッジ浮上分離回収
装置とその方法は以上の構成により成り立つが、塗料ミ
ストを発生段階でサラサラにしての回収処理が、プロセ
ス及びコストの両面においてすぐれた効果が得られ、又
連続運転によって無数の超微細な泡がブース中を巡り、
ブース全体の清浄化清澄化が進み保たれる効果が長期に
亘って得られるという二重の効果が見られる。EFFECT OF THE INVENTION The paint sludge flotation / separation apparatus and method according to the present invention have the above-described structure. However, the recovery treatment by making the paint mist dry at the generation stage has excellent effects in both process and cost. Also, due to continuous operation, countless ultra-fine bubbles circulate in the booth,
There is a double effect that cleaning and clarification of the entire booth can be achieved and maintained over a long period of time.

【図面の簡単な説明】[Brief description of drawings]

【図１】本発明の斜視図である 一部透視図であるFIG. 1 is a perspective view of the present invention, which is a partial perspective view.

【図２】本発明の斜視図である 一部透視図であるFIG. 2 is a partial perspective view showing a perspective view of the present invention.

【符号の説明】[Explanation of symbols]

１ 循環水槽 ２ 蓋 ３ 水封壁 ４ 吸い口 ５ ポンプ ６ 振蕩筒 ７、８ 邪魔板 ９、１０ 切取り孔 １１ ノズル部分 １２ 浮上槽 １３ 角形分離槽 １４ 押し出し式回収装置 １５ 超音波水位監視装置 １６ エアーシリンダ １７ 分離板 １８ 回転式回収装置 １９ 堰板 ２０ ブースに戻る配管 1 Circulating Water Tank 2 Lid 3 Water Seal Wall 4 Suction Port 5 Pump 6 Shaking Tube 7, 8 Baffle Plate 9, 10 Cutout Hole 11 Nozzle Part 12 Flotation Tank 13 Square Separation Tank 14 Extrusion Type Recovery Device 15 Ultrasonic Water Level Monitoring Device 16 Air Cylinder 17 Separation plate 18 Rotary recovery device 19 Barrier plate 20 Return to booth Piping

Claims (1)

【特許請求の範囲】[Claims] 【請求項１】（イ） 塗装ブースからの循環水に浮遊す
る塗料スラッジを含む表層部分を吸い取る水位追随機能
を持った吸い口（ ４）を備へたポンプ （ロ） 内部に狭い水路（ ９）（１０）を持つ邪魔板
（ ７）（ ８）を交互に積み上げた振蕩筒 （ハ） ノズル（１１）によって吹き込み、スラッジを
浮上分離させる分離槽 （ニ） 浮上分離したスラッジを回収処理する装置 （ホ） 残液をブース前面水槽に戻す 以上の如く構成された塗料スラッジの浮上分離回収方法
とその装置(A) A pump (b) equipped with a suction port (4) having a water level following function for absorbing a surface layer portion containing paint sludge floating in circulating water from a coating booth (9) A narrow water channel (9) ) (10) Baffle plates (7) and (8) alternately stacked on top of each other A shaking cylinder (c) A nozzle (11) blows a separation tank to float and separate sludge. (E) Returning the residual liquid to the water tank in front of the booth A method and apparatus for floating and separating the paint sludge configured as described above