A paper belt type degreasing treatment filtration system and method with pre-coating function

Abstract

The invention provides a paper belt type degreasing processing and filtering system and method with a pre-coating function. The method comprises the following contents that S1, a filtering paper beltis installed in a filtering chamber; the filtering paper belt is tensioned; a paper rolling machine is pointed to move for tensioning the paper belt; S2, a mixed solution of water and cellulose is added into the filtering chamber through a chemical adding stirring machine; the filtering paper belt in the filtering chamber intercepts the cellulose to complete the pre-coating; S3, alkali liquor to be treated in the alkali liquor groove is input into the filtering chamber to be filtered; when the filtering paper is blocked by dirt, the alkali liquor conveying into the filtering chamber is stopped; compressed air is input into the filtering chamber; cellulose on the filtering paper belt is sprayed and blown; S4, the paper rolling machine is started to drive the filter paper to advance; the cellulose on the filter paper is scraped away by a scraping plate; after the used filter paper is scraped, the paper rolling machine is turned off to complete one filtering and paper passing process. Thecellulose is used as a medium for adsorbing oil stain in the degreasing solution, oil ingredients and other impurities in the degreasing alkali liquor can be effectively removed; the electric platingspot defects can be completely avoided.

Description

technical field [0001] The invention belongs to the technical field of degreasing liquid filtration, and in particular relates to a paper tape type degreasing treatment filtering system and method with precoating function. Background technique [0002] The degreasing and cleaning treatment of the electrogalvanizing unit is electrolytic degreasing. Electrolytic degreasing is to soak the strip steel in the degreasing solution, and electrolyze the water through the electrification between the strip steel and the plate, so as to generate dense small air bubbles on the surface of the strip steel to clean the strip steel deeply. 10% of grease and impurities remain inside. [0003] The grease and impurities after degreasing and cleaning the strip exist in the degreasing tank liquid. The cleaning section of the existing unit is not designed with a degreasing liquid filter device, so the degreasing liquid can only be removed by regular discharge. Larger, it also increases the diffic...

AI Technical Summary

Problems solved by technology

[0003] The grease and impurities after degreasing and cleaning the strip exist in the degreasing tank liquid. The cleaning section of the existing unit is not designed with a degreasing liquid filter device, so the degreasing liquid can only be removed by regular discharge. Larger, it also increases the difficulty of wastewater treatment, the cost is higher, and the cleanliness of the degreasing solution is also difficult to guarantee, and it is easy to cause surface quality defects such as electroplating mottling

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