Novel environment-friendly waste gas treatment system for paint spraying and baking equipment

Abstract

The invention relates to a novel environment-friendly waste gas treatment system for paint spraying and baking equipment for paint spraying and drying operations of automobiles or other workpieces. The novel environment-friendly waste gas treatment system is characterized in that a platform air outlet of a paint spraying and baking booth is communicated with an air inlet of an air duct A, an outlet end of the air duct A is communicated with an air inlet of a paint mist separation device, an air outlet of the paint mist separation device is communicated with an air inlet of an odor purifying device through an air duct B, and an air outlet of the odor purifying device is communicated with an air inlet of an exhaust fan of an exhaust device. By combination of the paint mist separation device and the odor purifying device, volatile harmful substances and odorous gases generated in a paint spraying process can be eliminated effectively and thoroughly, solids in waste gas can be removed stably and thoroughly, pollution of the exhaust ducts and the exhaust fan is avoided, the problem of manual cleaning and maintenance is avoided as well, and particulate matters in the gas emitted to the atmosphere are guaranteed against limit exceeding to realize direct emission.

Description

technical field [0001] The invention relates to a novel environmental protection technology waste gas treatment system for paint spraying and baking equipment, which belongs to the field of paint spraying and drying of automobiles or other workpieces. Background technique [0002] With the rapid development of the automobile industry, the number of automobiles in China is more than 130 million. In the process of automobile preparation, painting and baking are important steps in the preparation of automobiles. In addition, during the normal maintenance and repair of automobiles, it is necessary to spray and bake automobiles. Treatment, most of the existing paint mist treatment methods in spray paint booths adopt dry treatment and wet treatment; [0003] (1) Dry processing method [0004] That is to say, it first filters and absorbs the solids in the exhaust gas through the glass fiber cotton installed under the grille at the bottom of the chamber, and then removes the harmfu...

AI Technical Summary

Problems solved by technology

[0006] That is, the method of water curtain or water swirl is used to fully mix the overspray paint mist with water, and most of the solids are captured by water, while the exhaust gas is diluted by a large air volume to reduce the concentration of harmful gases below the specified value, and then high-altitude The shortcomings of this method are as follows: First, whether it is a water curtain spray booth or a water cyclone spray booth, the solid content in the overspray paint mist is only removed by mixing air and water, and the solid content The removal is not thorough, and after a long time of use, scale will form in the exhaust fan and exhaust channels, which will affect the use effect; second, harmful gases will be directly discharged into the atmosphere at high altitudes only through the dilution of large air volumes, which will affect the atmospheric environment. Cause pollution, especially affect the environment around the factory area, and cannot meet the increasingly stringent environmental testing requirements

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