JP5334155B2 - Treatment liquid circulation system - Google Patents

Treatment liquid circulation system Download PDF

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JP5334155B2
JP5334155B2 JP2008087519A JP2008087519A JP5334155B2 JP 5334155 B2 JP5334155 B2 JP 5334155B2 JP 2008087519 A JP2008087519 A JP 2008087519A JP 2008087519 A JP2008087519 A JP 2008087519A JP 5334155 B2 JP5334155 B2 JP 5334155B2
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removal
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foreign matter
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degreasing
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JP2009242818A (en
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啓彰 神澤
修二 伊藤
康之 佐々木
謙太郎 後藤
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ダイハツ工業株式会社
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本発明は、処理液循環利用システムに関し、特に、車体の塗装工程の前に行われる処理工程において使用される処理液循環利用システムに関する。   The present invention relates to a treatment liquid circulation utilization system, and more particularly, to a treatment liquid circulation utilization system used in a treatment process performed before a painting process of a vehicle body.
車体の塗装処理を行うに際しては、塗膜欠陥の防止の観点から、その前処理工程として、車体の表面に付着している油分のほか、塗装工程までの各作業工程で発生し車体表面に付着した鉄粉や繊維くずなどの異物を除去するための脱脂処理や洗浄処理を実施する場合が多い。   When painting a car body, from the viewpoint of preventing coating film defects, as a pre-treatment process, in addition to oil adhering to the car body surface, it occurs in each work process up to the painting process and adheres to the car body surface. In many cases, a degreasing process or a cleaning process is performed to remove foreign matters such as iron powder and fiber waste.
また、上記前処理工程で用いた処理液を有効に利用するため、例えば上記処理液に含まれる異物を取り除いた後、当該処理液を前処理工程に再利用する方法が提案されている。   In order to effectively use the treatment liquid used in the pretreatment process, for example, a method of reusing the treatment liquid in the pretreatment process after removing foreign substances contained in the treatment liquid has been proposed.
例えば、下記特許文献1には、回収水に含まれる微粒鉄粉を効果的に分離除去する目的で、回収水の貯留タンク内に、アモルファス合金繊維よりなるストレーナ部材を磁石と相互に近接させて配置したストレーナ装置が開示されている。また、同特許文献には、上記ストレーナ部材が貯留タンクに着脱自在に取り付けられている旨が記載されている。   For example, in Patent Document 1 below, for the purpose of effectively separating and removing fine iron powder contained in recovered water, a strainer member made of amorphous alloy fibers is brought close to a magnet in a recovered water storage tank. A deployed strainer device is disclosed. Moreover, the patent document describes that the strainer member is detachably attached to the storage tank.
また、例えば、下記特許文献2には、沈降槽において使用済み洗浄水の上昇流を形成することで、洗浄水に含まれる異物のうち比較的大きなサイズの異物を沈降除去し、続いて、沈降槽からシャワータンク内に回収した洗浄水に気泡を導入することで、回収した洗浄水に残存する異物を浮上分離する方法、および、沈降分離時の上昇流の速度と浮上分離時の気泡の大きさをそれぞれ所定の範囲に設定する方法が開示されている。
特開平10−118422号公報 特開平10−244252号公報
In addition, for example, in Patent Document 2 below, by forming an upward flow of used washing water in a settling tank, a relatively large size of foreign substances contained in the washing water is settled and removed, and then settling is performed. Introducing air bubbles into the wash water collected from the tank into the shower tank to float and separate foreign matter remaining in the collected wash water, as well as the speed of the upward flow during settling separation and the size of the bubbles during float separation There is disclosed a method for setting the thicknesses within a predetermined range.
Japanese Patent Laid-Open No. 10-118422 Japanese Patent Laid-Open No. 10-244252
上記特許文献1に開示の装置では、鉄粉等の異物を捕捉すべきストレーナ部材が貯留タンクの内部空間を隔てるように配置されている。そのため、一旦捕捉した異物をストレーナ部材から取り除くには、このストレーナ部材を貯溜タンクから一旦取り外す必要があり面倒である。また、ストレーナ部材を取り外して清掃している間は実質的に回収水(洗浄水)の循環利用が停止するため、作業効率の低下を招くおそれもある。   In the apparatus disclosed in Patent Document 1, a strainer member that should capture foreign matter such as iron powder is disposed so as to separate the internal space of the storage tank. Therefore, in order to remove the foreign matter once captured from the strainer member, it is necessary to remove the strainer member from the storage tank, which is troublesome. Further, while the strainer member is removed and cleaned, the circulating use of the recovered water (washing water) is substantially stopped, so that the work efficiency may be reduced.
また、上記特許文献2に開示の方法では、その設定すべき上昇流の速度(0.4cm/秒以下)からも分かるように、分離除去作業に多大な時間が必要となるため、大量の処理液を効率よく循環利用するとの観点からは実用的な方法とはいえない。また、所定の大きさに制御した気泡を安定的に洗浄水に供給するために高精度な制御が可能な気泡発生装置が必要となるため設備が煩雑となり、また、設備費用の増大化も避けられない。   Further, in the method disclosed in Patent Document 2, a large amount of processing is required because separation and removal work requires a large amount of time, as can be seen from the speed of the upward flow to be set (0.4 cm / second or less). From the viewpoint of efficiently recycling the liquid, it is not a practical method. In addition, since a bubble generating device capable of high-precision control is required to stably supply bubbles controlled to a predetermined size to the cleaning water, the facilities become complicated, and an increase in facility costs is avoided. I can't.
また、上記何れの特許文献においても洗浄水を処理対象としているが、異物の多くは油分によって車体に強固に付着しているため、洗浄工程よりも脱脂工程において脱脂液中に混入する異物の量のほうが多いのが通常である。そのため、例えば特許文献1に記載のストレーナ装置を脱脂液の洗浄に用いても短時間で目詰まりを生じる等して、実用性に足る脱脂液の循環利用を図ることは難しい。   In any of the above patent documents, cleaning water is the target of treatment, but since most of the foreign matter is firmly attached to the vehicle body due to oil, the amount of foreign matter mixed in the degreasing liquid in the degreasing step rather than the cleaning step. Usually there are more. For this reason, for example, even if the strainer device described in Patent Document 1 is used for cleaning the degreasing liquid, it is difficult to circulate and use the degreasing liquid that is sufficient for practical use because clogging occurs in a short time.
以上の事情に鑑み、本発明では、処理液を効率よく循環利用できると共に、異物除去手段のメンテナンス性に優れ、かつ、簡素な設備で安価に構成可能な処理液循環利用システムを提供することを技術的な課題とする。   In view of the above circumstances, the present invention provides a processing liquid circulation and utilization system that can efficiently circulate and use the processing liquid, has excellent maintainability of the foreign matter removing means, and can be configured with simple equipment at low cost. Technical issues.
前記課題の解決は、本発明に係る処理液循環利用システムにより達成される。すなわち、この循環利用システムは、塗装工程の前に行われる処理工程で車体に供給された処理液を回収すると共に、回収した処理液に含まれる異物を除去し、然る後、異物を除去した処理液を回収先の処理工程で再利用する処理液循環利用システムにおいて、循環利用すべき処理液に脱脂液が用いられ、異物を除去するための第1除去工程と、中間除去工程と、第2除去工程とを有し、第1除去工程には、平滑なろ過面を水平方向に対して傾斜させて配置したろ過分離装置が設けられ、中間除去工程には、第1除去工程で異物除去処理を受けた脱脂液に含まれる異物としての磁性物質を吸着して分離する吸着分離装置が設けられ、かつ第2除去工程には、中間除去工程で異物除去処理を受けた脱脂液に含まれる異物を捕捉して分離する捕捉分離装置が設けられ、第1除去工程では、異物のうち相対的に大きな異物を分離除去し、中間除去工程では、異物に含まれる磁性物質のうち第1除去工程でろ過分離できずに脱脂液に残った相対的に小さな磁性物質を吸着分離し、かつ第2除去工程では、第1除去工程及び中間除去工程で除去されずに残った相対的に小さな異物を分離除去するように構成されている点をもって特徴付けられる。 The solution to the above problem is achieved by the processing liquid circulation utilization system according to the present invention. That is, this circulation utilization system collects the processing liquid supplied to the vehicle body in the processing process performed before the painting process, and removes foreign matters contained in the collected processing liquid, and then removes the foreign matters. In a processing liquid circulation utilization system that reuses a processing liquid in a recovery destination processing process, a degreasing liquid is used as a processing liquid to be circulated, and a first removal process for removing foreign substances , an intermediate removal process, and a 2 removal step, the first removal step, is provided a filtration separation device arranged in an inclined smooth filtering surface with respect to the horizontal direction, the intermediate step of removing foreign matter removed by the first removing step An adsorption / separation device that adsorbs and separates magnetic substances as foreign matters contained in the treated degreasing liquid is provided, and the second removal step includes the degreasing liquid that has undergone the foreign matter removal treatment in the intermediate removal step. Capturing and separating foreign objects Away device is provided, in a first removal step, a relatively large foreign matter separated and removed out of the foreign body, the intermediate removal step, the degreasing solution can not be filtered off in the first removal step of the magnetic material contained in the foreign substance In the second removal step, the relatively small foreign material remaining in the first removal step and the intermediate removal step is separated and removed in the second removal step. It is characterized by
このような構成とすることで、まず、第1除去工程において、塗装前の車体に付着している比較的大きな異物、例えば粒径の比較的大きな鉄粉や繊維くずなどがろ過面により捕捉される。そして、捕捉された異物は平滑でかつ傾斜したろ過面上を自重で滑って下方へと集積される。そのため、ろ過面上に捕捉した異物が堆積し目詰まりを生じる事態を可及的に回避することができる。また、ろ過面で捕捉した異物の多くはその下方にて集積されるため、そのメンテナンスの頻度が少なくて済む。また、次の第2除去工程においては、第1除去工程で除去されずに残った比較的小さな異物、例えば微細な鉄粉等が分離除去される。そのため、第2除去工程以降にフィルタ等の分離除去手段を用いる場合であっても、その目詰まりを極力減じて、メンテナンスの頻度を低減させることができる。また、上記形態のろ過分離装置であれば、そのろ過面を大気側に開放することができるので、作業ラインの稼動中であっても、ろ過面のメンテナンス(ろ過面上に残留した異物の除去)を容易に行うことができる。作業者により手動でメンテナンスを行うこともできる。これにより、ろ過分離装置の作業効率を維持することができる。   By adopting such a configuration, first, in the first removal step, relatively large foreign matters adhering to the vehicle body before painting, such as iron powder and fiber scraps having a relatively large particle diameter, are captured by the filtration surface. The The trapped foreign matter slides on its smooth and inclined filtration surface with its own weight and accumulates downward. For this reason, it is possible to avoid as much as possible a situation in which foreign matter trapped on the filtration surface is accumulated and clogging occurs. In addition, since most of the foreign matter captured on the filtration surface is accumulated below the filtration surface, the maintenance frequency is low. Further, in the next second removal step, relatively small foreign matters such as fine iron powder remaining without being removed in the first removal step are separated and removed. Therefore, even when a separation and removal means such as a filter is used after the second removal step, the clogging can be reduced as much as possible, and the frequency of maintenance can be reduced. In addition, since the filtration surface of the above-described form can be opened to the atmosphere side, the filtration surface maintenance (removal of foreign matter remaining on the filtration surface) even when the work line is in operation. ) Can be easily performed. Maintenance can also be performed manually by an operator. Thereby, the working efficiency of the filtration separator can be maintained.
また、上記構成で処理液である脱脂液を清浄化できるので、分離除去に要する設備も簡易なもので済み、その設備費用も安価である。また、ろ過分離装置が上記構造を有する点、上記メンテナンス頻度が低い点、および、サイズの大きい異物から順に分離除去する点から、脱脂液の許容処理量を引き上げることができると共に、脱脂液中に含まれる異物の除去効率を高めることができる。これにより、脱脂液による脱脂作用を改善でき、ひいては電着塗装等の塗装品質の向上につながる。   In addition, since the degreasing liquid as the treatment liquid can be purified with the above-described configuration, the equipment required for separation and removal is simple, and the equipment cost is low. In addition, it is possible to increase the permissible processing amount of the degreasing liquid from the point that the filtration separation device has the above structure, the point that the maintenance frequency is low, and the point of separation and removal in order from the large foreign matter, The removal efficiency of the contained foreign matter can be increased. Thereby, the degreasing effect | action by a degreasing liquid can be improved, and it leads to the improvement of coating quality, such as electrodeposition coating by extension.
なお、上記ろ過分離装置に係る構造は、車体の脱脂等に使用される脱脂液を循環利用システムの循環媒体として使用する場合にはじめて有効に作用する。すなわち、脱脂や洗浄等の車体表面処理に使用された処理液には、車体表面に付着していた油分が混入することから、例えば車体洗浄に用いる洗浄水を本発明に係る循環利用システムの循環媒体として使用した場合、洗浄水中に含まれる油分がろ過面上に油膜を張り、これにより、通過させるべき液体成分が通過できない不具合を生じるおそれがある。本発明者らの行った実験によれば、油膜の形成を回避できる程度にまでろ過面の目(通過孔やすき間)のサイズを大きくすると、ろ過分離すべき比較的大径の鉄粉や繊維くずまで通してしまい、フィルタとしての本来的機能を奏し得ない。これに対して、脱脂液を循環媒体に使用する場合には、脱脂液に混入した油分は脱脂液により適度に分解されるため、所望の異物が捕捉できる程度にまでろ過面の目を細かくしても油膜を形成することはなく、円滑かつ効果的なろ過作用を奏し得る。以上より、ろ過分離装置を第1段階の異物除去工程に設けると共に、脱脂液を循環利用媒体とする循環利用システムを構築することで、はじめて、車体の表面に付着した異物を処理液中から効果的に分離除去することが可能となる。   In addition, the structure which concerns on the said filtration separation apparatus acts effectively only when using the degreasing liquid used for the degreasing of a vehicle body as a circulation medium of a circulation utilization system. That is, since the oil component adhering to the surface of the vehicle body is mixed in the treatment liquid used for the surface treatment of the vehicle body such as degreasing and cleaning, for example, the cleaning water used for the vehicle body cleaning is circulated in the circulation utilization system according to the present invention. When used as a medium, the oil contained in the wash water may stretch the oil film on the filtration surface, thereby causing a problem that the liquid component to be passed cannot pass. According to experiments conducted by the present inventors, when the size of the filtration surface eyes (passage holes and gaps) is increased to such an extent that formation of an oil film can be avoided, relatively large-diameter iron powders and fibers to be separated by filtration. It passes through the waste and cannot perform its original function as a filter. On the other hand, when using a degreasing liquid as a circulating medium, the oil contained in the degreasing liquid is appropriately decomposed by the degreasing liquid, so that the filtration surface is narrowed to such an extent that the desired foreign matter can be captured. However, an oil film is not formed, and a smooth and effective filtration action can be achieved. As described above, the filtration and separation device is provided in the first stage foreign matter removal process, and by constructing a circulation use system using the degreasing liquid as a circulation use medium, the foreign matter attached to the surface of the vehicle body is effective from the treatment liquid for the first time. Can be separated and removed.
この場合、例えば第1除去工程と第2除去工程との間に中間除去工程を設け、この中間除去工程に、第1除去工程で除去されずに残った異物のうち磁性物質を磁力で吸着して脱脂液から分離する吸着分離装置を設けるようにしてもよい。これは、第1除去工程を経てなお脱脂液中には種々のサイズの鉄粉が主として多く含まれるとの事実に基づきなされたものであり、上記吸着分離装置を設けることで、第1除去工程で取り切れなかった鉄粉等を効率よく分離除去することができる。   In this case, for example, an intermediate removal process is provided between the first removal process and the second removal process, and the magnetic substance is adsorbed to the intermediate removal process by a magnetic force among the foreign matters remaining without being removed in the first removal process. An adsorption separation device for separating from the degreasing liquid may be provided. This is based on the fact that the defatted liquid still contains a large amount of iron powders of various sizes through the first removal step. By providing the adsorption separation device, the first removal step It is possible to efficiently separate and remove iron powder and the like that could not be removed in step (b).
また、第2除去工程には、第1除去工程で除去されずに残った異物を捕捉して脱脂液から分離する捕捉分離装置が設けられていてもよい。このような構成とすることで、第1除去工程(あるいは上記の中間除去工程)では取り切れなかった微細な異物までを確実に捕捉除去することができ、脱脂液の清浄度を高めることができる。これは、当該除去工程に至るまでに所定の大きさの異物が確実に除去されており、この工程に、除去すべき異物の大きさに対応した捕捉除去手段(フィルタなど)を配置することができることによる。また、各異物除去工程ごとに異なるサイズないし種類の異物が除去されることで、各々のメンテナンス頻度を減じ、言い換えると、現実的な周期でメンテナンスを実施でき、これにより実用性に足る循環利用システムの構築が可能となる。   Moreover, the 2nd removal process may be provided with the capture separation apparatus which capture | acquires the foreign material which was not removed by the 1st removal process, and isolate | separates it from a degreasing liquid. By adopting such a configuration, even fine foreign matters that could not be removed in the first removal step (or the intermediate removal step) can be reliably captured and removed, and the cleanliness of the degreasing liquid can be increased. . This is because foreign substances of a predetermined size are surely removed by the time the removal process is reached, and capture removal means (such as a filter) corresponding to the size of the foreign substances to be removed can be arranged in this process. It depends on what you can do. In addition, by removing different sizes or types of foreign matters for each foreign matter removal process, the frequency of maintenance can be reduced, in other words, maintenance can be carried out in a realistic cycle, which makes the circulation utilization system sufficient for practical use. Can be constructed.
また、上記構造を有する処理液循環利用システムは、ラインの稼動時と非稼動時とでその循環系統を切替えるように構成することも可能である。例えば、処理工程を実施しない場合、異物除去工程を終了した脱脂液が、回収先の処理工程に再利用されることなく第1除去工程へ循環供給されるように構成することも可能である。このように構成することで、ライン稼動時には、脱脂液による処理工程で混入した異物をこれに続く除去工程で分離除去することで、脱脂液を所定の清浄度に保つことができる。また、ラインの稼動停止時には、脱脂液の循環系統に異物が新たに混入することはないため、脱脂液をより効果的に洗浄でき、結果として、上記循環系統を構成する上記各分離装置の自動メンテナンスが可能となる。   In addition, the processing liquid circulation utilization system having the above-described structure can be configured to switch the circulation system between when the line is in operation and when it is not in operation. For example, when the treatment process is not performed, the degreasing liquid that has finished the foreign matter removal process can be configured to be circulated and supplied to the first removal process without being reused in the treatment process of the collection destination. By comprising in this way, at the time of line operation, the degreasing liquid can be maintained at a predetermined cleanliness by separating and removing the foreign matters mixed in the processing process using the degreasing liquid in the subsequent removing process. In addition, when the line is stopped, foreign substances are not newly mixed in the degreasing liquid circulation system, so that the degreasing liquid can be washed more effectively. As a result, the automatic operation of each separation device constituting the circulation system is achieved. Maintenance is possible.
以上のように、本発明によれば、処理液を効率よく循環利用できると共に、異物除去手段のメンテナンス性に優れ、かつ、簡素な設備で安価に構成可能な処理液循環利用システムを提供することができる。また、上記処理液を工業用廃液として排水処理する際にも、当該廃液に含まれる異物が少なくなることから、排水処理への負担も軽減され、その処理コストも低減される。   As described above, according to the present invention, there is provided a processing liquid circulation and utilization system that can efficiently circulate and use a processing liquid, has excellent maintainability of foreign matter removing means, and can be configured with simple equipment at low cost. Can do. In addition, when waste water is treated as industrial waste liquid, foreign matter contained in the waste liquid is reduced, so that the burden on waste water treatment is reduced and the treatment cost is reduced.
以下、本発明に係る処理液循環利用システムの一実施形態を図面に基づき説明する。   Hereinafter, an embodiment of a processing liquid circulation utilization system according to the present invention will be described with reference to the drawings.
図1は、本発明に係る処理液循環利用システム1の全体構成を概念的に示している。この実施形態では、溶接工程後でかつ電着塗装の前処理工程に該当する脱脂工程を、本発明に係る処理液循環利用システムに組み込んだ場合を例にとり説明する。   FIG. 1 conceptually shows the overall configuration of a processing liquid circulation utilization system 1 according to the present invention. In this embodiment, the case where the degreasing process corresponding to the pretreatment process of electrodeposition coating after the welding process is incorporated in the processing liquid circulation system according to the present invention will be described as an example.
図1に示すように、脱脂処理の対象となる車体2は、ハンガー等の適当な搬送手段により搬送ライン上を所定の搬送方向に向けて搬送されると共に、搬送中の車体2に対して所定の方向(ここでは略水平方向)から脱脂液L1を噴射供給するための脱脂液供給手段3が上記搬送ラインに沿って配設されている。そして、図1に示すように、車体2に向けて脱脂液L1を噴射供給可能な領域の鉛直下方には、車体2に噴射供給した脱脂液L1を回収するための回収槽4が配設されると共に、回収槽4の下流側に位置する第1除去工程には脱脂液L2のろ過分離装置5が配設されている。第1除去工程の後には第2除去工程が続くが、この実施形態では、第1除去工程と第2除去工程との間に中間除去工程が設けられており、この中間除去工程には、第1除去工程で異物除去処理を受けた脱脂液L3に含まれる異物を吸着して分離する吸着分離装置6が配設されている。また、この中間除去工程に続く第2除去工程には、中間除去工程で異物除去処理を受けた脱脂液L4に含まれる異物を捕捉して分離する捕捉分離装置7が配設されている。また、この実施形態では、吸着分離装置6の下流側に、吸着分離装置6により異物の除去処理を受けた脱脂液L4を貯留するためのタンク8が配設されると共に、このタンク8と捕捉分離装置7との間に、タンク8内の脱脂液L4を加圧して捕捉分離装置7へ送り込むためのポンプ9が配設されている。以下、異物の除去手段に関する事項を中心に説明する。   As shown in FIG. 1, a vehicle body 2 to be subjected to a degreasing process is transported in a predetermined transport direction on a transport line by appropriate transport means such as a hanger, and is predetermined with respect to the vehicle body 2 being transported. A degreasing liquid supply means 3 for spraying and supplying the degreasing liquid L1 from the direction (here, substantially horizontal direction) is disposed along the transport line. As shown in FIG. 1, a recovery tank 4 for recovering the degreasing liquid L1 injected and supplied to the vehicle body 2 is disposed vertically below the region where the degreasing liquid L1 can be injected and supplied toward the vehicle body 2. At the same time, a filtration separation device 5 for the degreasing liquid L2 is disposed in the first removal step located downstream of the recovery tank 4. The first removal step is followed by the second removal step. In this embodiment, an intermediate removal step is provided between the first removal step and the second removal step. An adsorption separation device 6 that adsorbs and separates foreign matter contained in the degreasing liquid L3 that has been subjected to foreign matter removal processing in one removal step is provided. Further, in the second removal step subsequent to the intermediate removal step, a capture separation device 7 that captures and separates foreign matters contained in the degreasing liquid L4 that has been subjected to the foreign matter removal processing in the intermediate removal step is disposed. Further, in this embodiment, a tank 8 for storing the degreasing liquid L4 that has been subjected to the foreign substance removal processing by the adsorption separation device 6 is disposed on the downstream side of the adsorption separation device 6, and the tank 8 and the trap are captured. A pump 9 for pressurizing the degreasing liquid L4 in the tank 8 and feeding it to the capture and separation device 7 is disposed between the separation device 7 and the separation device 7. Hereinafter, the description will be focused on matters relating to the foreign matter removing means.
ろ過分離装置5は、その上部に、回収槽4内の脱脂液L2を受入れ可能なオーバーフロー槽10を有すると共に、このオーバーフロー槽10から溢れ出た脱脂液L2をろ過可能なろ過面11とを主に有する。この実施形態では、ろ過面11は、平行に配列した複数のウェッジワイヤ12の一端面と、これらウェッジワイヤ12,12間に設けられる所定間隔の隙間とで構成されている。上記形態のろ過面11は平滑な面性状をなすと共に、その上部をオーバーフロー槽10のオーバーフロー部に隣接させ、かつ、水平方向に対して傾斜した状態で配設されている。なお、ウェッジワイヤ12,12間の隙間の大きさは、後述する目的の異物13aを捕捉分離でき、かつ、残りの脱脂液L3を通過可能な程度の大きさに設定することが好ましく、例えば100μm以上300μm以下、より好ましくは100μm以上200μm以下に設定される。   The filtration / separation device 5 has an overflow tank 10 capable of receiving the degreasing liquid L2 in the recovery tank 4 at an upper portion thereof, and a filtration surface 11 capable of filtering the degreasing liquid L2 overflowing from the overflow tank 10. Have. In this embodiment, the filtration surface 11 is composed of one end surfaces of a plurality of wedge wires 12 arranged in parallel and a gap having a predetermined interval provided between the wedge wires 12 and 12. The filtration surface 11 of the said form makes smooth surface property, and the upper part is made to adjoin the overflow part of the overflow tank 10, and is arrange | positioned in the state inclined with respect to the horizontal direction. The size of the gap between the wedge wires 12 and 12 is preferably set to a size that can capture and separate a target foreign matter 13a described later and can pass through the remaining degreasing liquid L3, for example, 100 μm. It is set to not less than 300 μm and more preferably not less than 100 μm and not more than 200 μm.
吸着分離装置6には1又は複数のマグネットローラ14が回転自在に取り付けられており、その一部がろ過分離装置5から供給された脱脂液L3と接触可能な高さに配設されている。また、マグネットローラ14の大気接触側には、マグネットローラ14の回転に伴いその外周面に吸着された後述する異物(鉄粉等)13bを当該外周面から取り除いて、取り除いた箇所から離れた位置で異物13bを堆積させる堆積板15が傾斜して配置されている。   One or a plurality of magnet rollers 14 are rotatably attached to the adsorption / separation device 6, and a part of the magnet rollers 14 is disposed at a height that allows contact with the degreasing liquid L <b> 3 supplied from the filtration / separation device 5. In addition, on the air contact side of the magnet roller 14, a foreign substance (iron powder or the like) 13 b (to be described later) adsorbed on the outer peripheral surface with the rotation of the magnet roller 14 is removed from the outer peripheral surface and away from the removed portion. The deposition plate 15 for depositing the foreign matter 13b is inclined.
捕捉分離装置7は、ここではいわゆるバグフィルタを備えるものであり、その目のサイズ(目の細かさ)は例えば50μm以上200μm以下、好ましくは50μm以上100μm以下に設定される。そして、このバグフィルタを通過して捕捉分離装置7による異物除去処理が完了した脱脂液が脱脂液供給手段3へと供給されるように、捕捉分離装置7と脱脂液供給手段3とが流路を介して接続されている。   The capture separation device 7 includes a so-called bag filter here, and the size of the eyes (fineness of the eyes) is set to, for example, 50 μm to 200 μm, preferably 50 μm to 100 μm. Then, the capture and separation device 7 and the degreasing liquid supply means 3 are flow channels so that the degreasing liquid that has passed through the bag filter and the foreign substance removal processing by the capture and separation apparatus 7 is completed is supplied to the degreasing liquid supply means 3. Connected through.
以下、上記構成を有する処理液循環利用システム1の使用態様の一例を説明する。   Hereinafter, an example of a usage mode of the processing liquid circulation utilization system 1 having the above configuration will be described.
まず、脱脂処理の対象となる車体2が、上記態様で脱脂工程領域中の所定位置まで搬送されてくると、車体2に対して脱脂液供給手段3から脱脂液L1を噴射供給する。これにより、車体2の表面に付着していた油分が取り除かれると共に、当該油分によって車体2の表面に比較的強固に付着していた大小様々の鉄粉やスパッタ、砥石から出る繊維くず等の固体状の異物が車体2から取り除かれる。これら取り除かれた油分や固体状の異物は脱脂液L1に混入し、供給領域の下方に位置する回収槽4にて回収される。   First, when the vehicle body 2 to be subjected to the degreasing process is conveyed to a predetermined position in the degreasing process region in the above-described manner, the degreasing liquid L1 is jetted and supplied from the degreasing liquid supply means 3 to the vehicle body 2. As a result, the oil component adhering to the surface of the vehicle body 2 is removed, and solids such as various types of iron powders and spatters that are relatively firmly adhered to the surface of the vehicle body 2 by the oil component, and fiber scraps from the grindstone. The foreign object is removed from the vehicle body 2. These removed oil and solid foreign matters are mixed in the degreasing liquid L1 and collected in the collection tank 4 located below the supply region.
このようにして回収槽4に回収された脱脂液L2は、その底部に設けられた排出口を通ってろ過分離装置5のオーバーフロー槽10へと送られる。そして、脱脂液L2がオーバーフロー槽10を満たしそのオーバーフロー部から溢れ出ると、オーバーフロー部と連続しているろ過面11の最上部から溢れ出た脱脂液L2が、平滑で傾斜したろ過面11上を伝って下方に流れていく。この間(ろ過面11全体のうち上側における例えば三分の一程度の領域において)、所定の大きさ以上の異物、例えば最大径500μm以上の鉄粉や繊維くず等がろ過面11に設けられた隙間を通過することなく下方に滑り落ちる一方で、上記以外の異物や脱脂液は隙間を介してろ過面11を通過し、下方に落下していく。このようにして、所定の大きさ以上の異物13aのみがろ過面11の下方に堆積していき、脱脂液L2から分離除去される(第1除去段階)。   The degreasing liquid L2 recovered in the recovery tank 4 in this way is sent to the overflow tank 10 of the filtration / separation device 5 through the discharge port provided at the bottom thereof. And when the degreasing liquid L2 fills the overflow tank 10 and overflows from the overflow part, the degreasing liquid L2 overflowing from the uppermost part of the filtration surface 11 continuous with the overflow part flows over the smooth and inclined filtration surface 11. It flows down through. During this time (in the upper region of the entire filtration surface 11, for example, about one third), a clearance in which the foreign material having a predetermined size or more, for example, iron powder or fiber waste having a maximum diameter of 500 μm or more, is provided on the filtration surface 11. On the other hand, the foreign matters and the degreasing liquid other than those described above pass through the filtration surface 11 through the gap and fall downward. In this way, only the foreign matter 13a having a predetermined size or larger is deposited below the filtration surface 11, and separated and removed from the degreasing liquid L2 (first removal stage).
然る後、ろ過分離装置5の下方に位置する貯留部に溜められたろ過処理済みの脱脂液L3は次段階となる吸着分離装置6へと送られる。そして、この吸着分離装置6の貯留槽へと脱脂液L3が送られてくると、マグネットローラ14を図示しない適当な駆動手段により回転させ、回転状態のマグネットローラ14と接触した磁性物質をマグネットローラ14の表面に吸着させる。ここでは主に、第1除去工程でろ過分離できずに脱脂液L3中に残った鉄粉(500μm未満)が異物13bとして吸着され、脱脂液L3から分離される(中間除去工程)。吸着分離された異物13bは堆積板15によってその板上に掻き集められ、傾斜下方に堆積される。   Thereafter, the filtered degreasing liquid L3 stored in the storage section located below the filtration separation device 5 is sent to the adsorption separation device 6 as the next stage. When the degreasing liquid L3 is sent to the storage tank of the adsorption separation device 6, the magnet roller 14 is rotated by an appropriate driving means (not shown), and the magnetic substance in contact with the rotating magnet roller 14 is moved to the magnet roller. Adsorb to the surface of 14. Here, mainly the iron powder (less than 500 μm) that cannot be filtered and separated in the first removal step and remains in the degreasing liquid L3 is adsorbed as the foreign matter 13b and separated from the degreasing liquid L3 (intermediate removal step). The adsorbed and separated foreign matter 13b is scraped and collected on the plate by the deposition plate 15, and is deposited below the inclination.
上述のようにして吸着分離処理を受けた脱脂液L4は、一旦タンク8に貯留されると共に、ポンプ9により捕捉分離装置7に向けて圧送される。そして、圧送状態の脱脂液L4が捕捉分離装置7のバグフィルタを所定の圧力下で通過することで、第1および中間除去工程では除去し切れなかった比較的小さな異物(例えば200μm未満)が当該フィルタにより捕捉される(第2除去工程)。このようにして、大半の異物が取り除かれた脱脂液は、脱脂液供給手段3へと循環供給され、再び車体2の脱脂工程に利用される(図1を参照)。   The degreasing liquid L4 that has been subjected to the adsorption separation process as described above is temporarily stored in the tank 8 and is pumped toward the capture separation device 7 by the pump 9. Then, when the degreasing liquid L4 in the pumped state passes through the bag filter of the capture separation device 7 under a predetermined pressure, relatively small foreign matters (for example, less than 200 μm) that could not be removed in the first and intermediate removal steps are Captured by the filter (second removal step). In this way, the degreasing liquid from which most of the foreign matter has been removed is circulated and supplied to the degreasing liquid supply means 3 and is used again in the degreasing process of the vehicle body 2 (see FIG. 1).
以上、説明したように、脱脂液に含まれる異物の組成に応じた段階的な異物除去工程(ここでは中間除去工程も含め三段階)を設けることで、脱脂液L2,L3,L4からの異物除去が効率的かつ確実に実施できる。また、各除去工程ごとに分離除去すべき異物の具体的対象が定まっているので、各々の分離除去に際して目詰まり等の不具合を生じることもない。例えば、この実施形態においては、第1除去工程で、第2除去工程にて目詰まりの原因となる可能性の高い比較的大径の鉄粉(500μm以上)や繊維くずが除去され、また、中間除去工程では、同じく第2除去工程にて目詰まりの原因となる可能性の高い粒径の鉄粉等が除去される。   As described above, the foreign substances from the degreasing liquids L2, L3, and L4 are provided by providing a stepwise foreign substance removing process (here, three stages including the intermediate removing process) according to the composition of the foreign substances contained in the degreasing liquid. Removal can be performed efficiently and reliably. In addition, since the specific target of the foreign matter to be separated and removed is determined for each removal step, problems such as clogging do not occur in each separation and removal. For example, in this embodiment, relatively large iron powder (500 μm or more) and fiber scraps that are likely to cause clogging in the second removal step are removed in the first removal step, In the intermediate removal process, iron powder having a particle size that is likely to cause clogging in the second removal process is removed.
また、この実施形態のように、第1除去工程にてろ過分離を実施し、中間除去工程で磁力による吸着分離を併せて実施することで、重さの異なる繊維くずと鉄粉とが絡み合うことなく各々の除去工程で分離回収される。これにより、各々の分離装置5,6のメンテナンスも容易となる。特に、この実施形態のように、ろ過面11を複数のエッジワイヤ端面で構成することで、繊維くずがろ過面11に引っかかるのを極力避けて、これを分離回収することができる。   In addition, as in this embodiment, filtration separation is performed in the first removal step, and adsorption separation by magnetic force is also performed in the intermediate removal step, so that fiber scraps having different weights and iron powder are intertwined. Without being separated and recovered at each removal step. Thereby, maintenance of each separation device 5 and 6 is also facilitated. In particular, as in this embodiment, by forming the filtration surface 11 with a plurality of edge wire end surfaces, it is possible to separate and collect the fiber scraps while avoiding as much as possible that the fiber scraps are caught on the filtration surface 11.
また、この実施形態に開示の構成であれば、実質的にバグフィルタの定期的な交換のみで済むため、非常にメンテナンスも簡易かつ容易である。もちろん、バグフィルタによる異物除去(第2除去工程)までに目詰まりの原因となり易い種類の異物(繊維くずや比較的大径の鉄粉など)は脱脂液から取り除かれているため、この点からもフィルタの交換頻度が少なくて済む。また、ろ過分離装置5は脱脂液L2の自重作用でろ過を行うため、実質的に分離除去作業にエネルギが必要となるのはマグネットローラ14の回転動作とポンプ9の圧送動作のみとなり、経済的である。   Also, with the configuration disclosed in this embodiment, since only the periodic replacement of the bag filter is substantially required, the maintenance is very simple and easy. Of course, the types of foreign matters (fiber waste, relatively large diameter iron powder, etc.) that are likely to cause clogging before the removal of foreign matter by the bag filter (second removal step) are removed from the degreasing liquid. However, the frequency of filter replacement is low. In addition, since the filtration / separation apparatus 5 performs filtration by the self-weight action of the degreasing liquid L2, energy is substantially required for the separation / removal operation only for the rotation operation of the magnet roller 14 and the pumping operation of the pump 9, which is economical. It is.
以上、本発明に係る処理液循環利用システム、および、この循環利用システムの使用態様の一形態を例にとり説明したが、本発明は、この形態に限られることなく、当該発明の範囲内において任意の具体的形態を採り得ることはもちろんである。   The processing liquid circulation utilization system according to the present invention and one form of usage of the circulation utilization system have been described above as an example. However, the present invention is not limited to this form, and is optional within the scope of the invention. Of course, it is possible to adopt a specific form.
例えば、上記実施形態では、脱脂液が、車体2の脱脂工程(に係る脱脂設備)から、各段階の分離除去工程(ろ過分離装置5,吸着分離装置6,捕捉分離装置7)を経て、再び脱脂工程へと戻る循環系統を備えた処理液循環利用システム1を例示したが、これに別形態の循環系統を加えた構成とすることも可能である。その場合、上記例示の循環系統と、他の循環系統との間で脱脂液の循環利用を切替え可能とするのがよい。例えば、図2はその一例を示すもので、同図に係る処理液循環利用システム21は、図1に示す循環系統に加え、各段階の分離除去工程(ろ過分離装置5,吸着分離装置6,捕捉分離装置7)を出て直接に第1段階の分離除去工程(ろ過分離装置5)へと戻る循環系統を備えたものを示している。   For example, in the above-described embodiment, the degreasing liquid is separated from the degreasing process of the vehicle body 2 (related to the degreasing equipment) through the separation / removal process (filtration separation device 5, adsorption separation device 6, capture separation device 7) of each stage, and again. Although the processing liquid circulation utilization system 1 provided with the circulation system which returns to a degreasing process was illustrated, it is also possible to set it as the structure which added the circulation system of another form to this. In this case, it is preferable that the circulation use of the degreasing liquid can be switched between the above-described circulation system and another circulation system. For example, FIG. 2 shows an example, and the processing liquid circulation utilization system 21 according to FIG. 2 includes a separation / removal process (filtration separation device 5, adsorption separation device 6, and so on) in addition to the circulation system shown in FIG. It shows the one provided with a circulation system that leaves the capture separation device 7) and returns directly to the first separation / removal step (filtration separation device 5).
詳細には、最終段階の異物除去工程(第2除去工程)に係る捕捉分離装置7と脱脂液供給手段3との間には切替え弁16が配設されると共に、回収槽4と第1除去工程に係るろ過分離装置5との間に第2切替え弁17が配設されており、第1切替え弁16の出口側ポートが、第2切替え弁17の入口側ポートに接続されている。これら双方の切替え弁16,17は、車体2の作業ライン稼動時と非稼動時とで適宜切り替えられるように図示しない適当な制御手段により制御されている。例えば、ライン稼動時、第1切替え弁16は、捕捉分離装置(バグフィルタ)7と脱脂液供給手段3との間で脱脂液が流通可能に切替えられると共に、第2切替え弁17は、回収槽4とろ過分離装置5のオーバーフロー槽10との間で脱脂液が流通可能に切替えられる。また、ライン非稼動時、第1切替え弁16は、捕捉分離装置7と第2切替え弁17の入口側ポートとの間で脱脂液が流通可能に切替えられると共に、第2切替え弁17は、その入口側ポートとつながる第1切替え弁16の出口側ポートとオーバーフロー槽10との間で脱脂液が流通可能に切替えられる。   More specifically, a switching valve 16 is disposed between the capture separation device 7 and the degreasing liquid supply means 3 in the final foreign matter removal process (second removal process), and the recovery tank 4 and the first removal. A second switching valve 17 is disposed between the filtration separation device 5 in the process, and an outlet side port of the first switching valve 16 is connected to an inlet side port of the second switching valve 17. Both of these switching valves 16 and 17 are controlled by appropriate control means (not shown) so as to be appropriately switched between when the work line of the vehicle body 2 is operating and when it is not operating. For example, when the line is in operation, the first switching valve 16 is switched so that the degreasing liquid can flow between the capture separation device (bag filter) 7 and the degreasing liquid supply means 3, and the second switching valve 17 is a recovery tank. 4 and the overflow tank 10 of the filtration separation device 5 are switched so that the degreasing liquid can flow. Further, when the line is not in operation, the first switching valve 16 is switched so that the degreasing liquid can flow between the capture separation device 7 and the inlet side port of the second switching valve 17, and the second switching valve 17 The degreasing liquid is switched between the outlet side port of the first switching valve 16 connected to the inlet side port and the overflow tank 10 so as to be able to flow.
このような構成とすることで、ライン稼動時には、車体2に向けて常に清浄な脱脂液L1を継続して供給することができ、脱脂作用が向上される。ひいては、この後の工程に係る電着塗装工程における塗装品質の向上にもつながる。一方、ライン非稼動時には、異物の混入がない一定量の脱脂液に対して上記一連の異物除去処理を繰り返し実施することになるため、当該除去処理に係る脱脂液を高精度に洗浄することができる。また、比較的清浄度の高い脱脂液を繰り返し循環流動させることで、結果的に上記複数の異物除去装置の自動メンテナンスにもなる。   By setting it as such a structure, the clean degreasing liquid L1 can always be continuously supplied toward the vehicle body 2 at the time of line operation, and a degreasing action is improved. As a result, it leads to the improvement of the coating quality in the electrodeposition coating process which concerns on a subsequent process. On the other hand, when the line is not in operation, the series of foreign substance removal processing is repeatedly performed on a certain amount of the degreasing liquid with no foreign matter mixed therein. Therefore, the degreasing liquid related to the removal process can be washed with high accuracy. it can. Further, by repeatedly circulating and flowing a degreasing liquid having a relatively high cleanliness, automatic maintenance of the plurality of foreign matter removing apparatuses can be achieved as a result.
また、上記脱脂工程を常に含む2以上の循環系統を備えた構成とすることも可能である。すなわち、例えば、図2でいえば、第1切替え弁16と第2切替え弁17との間に、図示は省略するが、別形態の異物除去装置を設けて、例えば、ライン上を流れる車体2の種類に応じて、図1や図2に示す一連の異物除去装置(ろ過分離装置5,吸着分離装置6,捕捉分離装置7)を通る循環系統と、上記別形態の異物除去装置を通る循環系統とを切替えて使用するように構成してもよい。この場合、別形態の異物除去装置は、単数もしくは複数とを問わず、また、本発明に開示の異物除去装置(ろ過分離装置5,吸着分離装置6,捕捉分離装置7)の一部あるいは全部を有するものであってもよい。この場合、例えばろ過面11の目の細かさやマグネットローラの磁力ならびに回転速度、バグフィルタの目の細かさ等を適宜調整することで、複数種類の車体に対応することができる。   Moreover, it is also possible to set it as the structure provided with the 2 or more circulation system | strain always including the said degreasing process. That is, for example, in FIG. 2, although not shown in the drawing between the first switching valve 16 and the second switching valve 17, another type of foreign matter removing device is provided, for example, the vehicle body 2 flowing on the line Depending on the type of circulatory system, a circulation system passing through a series of foreign matter removing devices (filtration separation device 5, adsorption separation device 6, capture separation device 7) shown in FIG. 1 and FIG. You may comprise so that it may switch and use a system | strain. In this case, the foreign substance removing device of another form is not limited to one or plural, and a part or all of the foreign substance removing device (filtration separation device 5, adsorption separation device 6, capture separation device 7) disclosed in the present invention. It may have. In this case, for example, by appropriately adjusting the fineness of the filtration surface 11, the magnetic force and rotational speed of the magnet roller, the fineness of the bag filter, etc., it is possible to cope with a plurality of types of vehicle bodies.
また、上記実施形態では、異物除去装置の組合せとして、第1段階にろ過分離装置5、第2段階に捕捉分離装置7、および、第1と第2との中間段階に吸着分離装置6をそれぞれ配置した場合を例示したが、もちろん、この組合せに限る必要はない。第1段階の異物除去工程にろ過分離装置5を有し、このろ過分離装置5で脱脂液に含まれる異物のうち相対的に大きな異物を分離除去すると共に、第2除去工程以降で、第1除去工程で除去されずに残った相対的に小さな異物を分離除去できるように構成される限りにおいて、その組合せは任意である。例えば、ろ過分離装置5とバグフィルタを備えた捕捉分離装置7のみで上記循環利用システムに係る異物除去工程を実施するよう構成してもよいし、吸着分離装置6が上記相対的に小さな異物を分離除去可能であれば、ろ過分離装置5と吸着分離装置6のみで上記異物除去工程を実施するよう構成してもよい。あるいは、吸着分離装置6と捕捉分離装置7の一方または双方に代えて、他の異物除去装置を配置し、これとろ過分離装置5とで異物除去工程の実施を図るようにしてもよいことはもちろんである。   Moreover, in the said embodiment, as a combination of a foreign material removal apparatus, the filtration separation apparatus 5 in the 1st stage, the capture separation apparatus 7 in the 2nd stage, and the adsorption separation apparatus 6 in the intermediate | middle stage of the 1st and 2nd, respectively. Although the case where it arrange | positions was illustrated, of course, it is not necessary to restrict to this combination. In the first stage foreign matter removal process, the filtration / separation device 5 is provided, and the filtration / separation device 5 separates and removes a relatively large foreign matter from the foreign matter contained in the degreasing liquid. The combination is arbitrary as long as it is configured so that relatively small foreign matters remaining without being removed in the removing step can be separated and removed. For example, the foreign matter removing process according to the circulation utilization system may be implemented only by the filtration / separation device 5 and the capture / separation device 7 including the bag filter, or the adsorption separation device 6 may remove the relatively small foreign matter. If the separation / removal is possible, the foreign matter removal step may be performed only by the filtration separation device 5 and the adsorption separation device 6. Alternatively, in place of one or both of the adsorption / separation device 6 and the capture / separation device 7, another foreign matter removing device may be arranged and the foreign matter removing step may be performed by this and the filtration / separating device 5. Of course.
また、上記実施形態では、処理液循環利用システムが、車体2の脱脂工程を含む循環系統を構成している場合を例示したが、溶接工程の前に行われる処理工程であって、脱脂液を処理液として使用可能な工程、例えば洗浄処理工程などであれば本発明に係るシステムを適用することができる。   Moreover, in the said embodiment, although the case where the process liquid circulation utilization system comprised the circulation system | strain including the degreasing process of the vehicle body 2, it is a process process performed before a welding process, Comprising: The system according to the present invention can be applied to any process that can be used as a processing liquid, such as a cleaning process.
本発明の一実施形態に係る処理液循環利用システムの全体構成を概念的に示す図である。It is a figure which shows notionally the whole structure of the process liquid circulation utilization system which concerns on one Embodiment of this invention. 本発明の他の実施形態に係る処理液循環利用システムの全体構成を概念的に示す図である。It is a figure which shows notionally the whole structure of the processing liquid circulation utilization system which concerns on other embodiment of this invention.
符号の説明Explanation of symbols
1,21 処理液循環利用システム
2 車体
3 脱脂液供給手段
4 回収槽
5 ろ過分離装置
6 吸着分離装置
7 捕捉分離装置
10 オーバーフロー槽
11 ろ過面
12 ウェッジワイヤ
13a,13b 異物
14 マグネットローラ
16,17 切替え弁
L1,L2,L3,L4 脱脂液
1, 21 Processing liquid circulation system 2 Car body 3 Degreasing liquid supply means 4 Collection tank 5 Filtration separation apparatus 6 Adsorption separation apparatus 7 Capture separation apparatus 10 Overflow tank 11 Filtration surface 12 Wedge wires 13a, 13b Foreign matter 14 Magnet rollers 16, 17 Switching Valves L1, L2, L3, L4 Degreasing liquid

Claims (2)

  1. 塗装工程の前に行われる処理工程で車体に供給された処理液を回収すると共に、該回収した前記処理液に含まれる異物を除去し、然る後、該異物を除去した前記処理液を回収先の前記処理工程で再利用する処理液循環利用システムにおいて、
    前記循環利用すべき処理液に脱脂液が用いられ、
    前記異物を除去するための第1除去工程と、中間除去工程と、第2除去工程とを有し、前記第1除去工程には、平滑なろ過面を水平方向に対して傾斜させて配置したろ過分離装置が設けられ、前記中間除去工程には、前記第1除去工程で異物除去処理を受けた脱脂液に含まれる異物としての磁性物質を吸着して分離する吸着分離装置が設けられ、かつ前記第2除去工程には、前記中間除去工程で異物除去処理を受けた脱脂液に含まれる異物を捕捉して分離する捕捉分離装置が設けられ、
    前記第1除去工程では、前記異物のうち相対的に大きな異物を分離除去し、前記中間除去工程では、前記異物に含まれる磁性物質のうち前記第1除去工程でろ過分離できずに前記脱脂液に残った相対的に小さな磁性物質を吸着分離し、かつ前記第2除去工程では、前記第1除去工程及び前記中間除去工程で除去されずに残った相対的に小さな異物を分離除去するように構成されている処理液循環利用システム。
    The processing liquid supplied to the vehicle body in the processing process performed before the painting process is recovered, and foreign substances contained in the recovered processing liquid are removed, and then the processing liquid from which the foreign substances have been removed is recovered. In the processing liquid circulation system to be reused in the previous processing step,
    A degreasing solution is used as the treatment solution to be recycled,
    It has the 1st removal process for removing the said foreign material , an intermediate | middle removal process, and a 2nd removal process , In the said 1st removal process, the smooth filtration surface was inclined and arrange | positioned with respect to the horizontal direction. A filtration separation device is provided, and the intermediate removal step is provided with an adsorption separation device that adsorbs and separates magnetic substances as foreign matters contained in the degreasing liquid subjected to the foreign matter removal treatment in the first removal step; and The second removal step is provided with a capture and separation device that captures and separates foreign matter contained in the degreasing liquid that has undergone foreign matter removal processing in the intermediate removal step,
    In the first removal step, a relatively large foreign matter is separated and removed from the foreign matter, and in the intermediate removal step, the degreasing liquid cannot be filtered and separated in the first removal step among magnetic substances contained in the foreign matter. In the second removal step, the relatively small magnetic substance remaining on the substrate is adsorbed and separated, and the relatively small foreign matter remaining without being removed in the first removal step and the intermediate removal step is separated and removed. Constructed treatment liquid circulation system.
  2. 前記処理工程を実施しない場合、前記異物除去工程を終了した前記脱脂液が、回収先の前記処理工程に再利用されることなく前記第1除去工程へ循環供給されるように構成されている請求項に記載の処理液循環利用システム。 When not performing the said process process, the said degreasing liquid which complete | finished the said foreign material removal process is comprised so that it may circulate and supply to the said 1st removal process, without being reused for the said process process of collection | recovery destination. Item 4. The processing liquid circulation utilization system according to Item 1 .
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US9199598B2 (en) 2014-02-26 2015-12-01 Takata Corporation Airbag and airbag apparatus
CN106835174A (en) * 2017-03-03 2017-06-13 赣州清亦华科科技有限公司 A kind of industrial small size metal parts efficiently sprays degreasing agent equipment
CN106884177A (en) * 2017-03-03 2017-06-23 南昌浩牛科技有限公司 A kind of Industrial Steels pipe surface sprays degreasing agent equipment

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JP3303081B2 (en) * 1993-12-24 2002-07-15 株式会社ホタニ Metal strip degreasing water treatment method and apparatus
JPH10244252A (en) * 1997-03-06 1998-09-14 Trinity Ind Corp Method for removing foreign matter such as iron power, waste thread from used cleaning water used for cleaning car-body
JP2003293155A (en) * 2002-04-08 2003-10-15 Nissan Motor Co Ltd Pre-coating treatment apparatus
JP2006231263A (en) * 2005-02-28 2006-09-07 Nidec Sankyo Corp Washing device
JP4828964B2 (en) * 2006-03-03 2011-11-30 日新製鋼株式会社 Stainless steel strip cleaning equipment

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US9199598B2 (en) 2014-02-26 2015-12-01 Takata Corporation Airbag and airbag apparatus
CN106835174A (en) * 2017-03-03 2017-06-13 赣州清亦华科科技有限公司 A kind of industrial small size metal parts efficiently sprays degreasing agent equipment
CN106884177A (en) * 2017-03-03 2017-06-23 南昌浩牛科技有限公司 A kind of Industrial Steels pipe surface sprays degreasing agent equipment
CN106884177B (en) * 2017-03-03 2019-01-29 唐山金马钢铁集团有限公司 A kind of Industrial Steels pipe surface sprinkling degreasing agent equipment
CN106835174B (en) * 2017-03-03 2019-02-22 温州诚博阀门有限公司 A kind of industrial small size metal parts efficiently sprays degreasing agent equipment

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