Self-circulating water treatment device for electrophoretic coating

Abstract

The invention provides a self-circulating water treatment device for electrophoretic coating. The self-circulating water treatment device for electrophoretic coating comprises a filter tank and a sludge precipitation tank, wherein filter cloth and a reel group are arranged in the filter tank, the filter cloth is disposed below the pipe mouth of a water inlet pipe of the self-circulating water treatment device, and the reel group includes a first reel and a second reel which are arranged in parallel; and the first reel is used for winding the filter cloth, the second reel is connected with a reel driving motor, and is suitable for conveying the filter cloth from the first reel to the second reel, and the sludge precipitation tank is connected with the filter tank, is arranged below the filter tank, and is used for separating solid particles and / or grease in the filtrate obtained through treatment of the filter cloth. The self-circulating water treatment device for electrophoretic coating, not only can grease and solid particles be removed simultaneously, but also the problem that the filtration rate and filtration effect are affected due to the clogging of the filter cloth in the filtration process can be solved, so that improvement of the water quality of recycled water of the self-circulating water treatment device is facilitated.

Description

technical field [0001] The invention relates to the field of electrophoretic coating, in particular to the field of self-circulating water treatment of electrophoretic coating. Background technique [0002] Electrophoretic coating is a coating method that uses an external electric field to make the particles such as pigments and resins suspended in the electrophoretic liquid directional migrate and deposit on the surface of the substrate of one of the electrodes. The electrophoretic coating process generally consists of four main processes: pre-coating pretreatment, electrophoretic coating, post-electrophoretic cleaning, and drying of the electrophoretic coating. Electrophoretic coating will generate a large amount of wastewater, especially the pre-treatment process before coating. sweat stains, etc.) and dust. Therefore, the wastewater generated by electrophoretic coating contains a large amount of oil and mud, which will pollute the environment if it is discharged direct...

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a self-circulating water treatment device for electrophoretic coating, which can remove grease and solid particles at the same time, and is suitable for the water circulation of the electrophoretic coating process. Achieving a high reuse rate of electrophoretic coating water can also avoid the problem of affecting the filtration rate and filtration effect due to the clogging of the filter cloth during the filtration process, which helps to improve the water quality of the recycled water of the self-circulating water treatment device

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