A method and water curtain cabinet for treating spraying exhaust gas

Abstract

The invention relates to the paint spraying coating technology field, and especially relates to a method for processing spray exhaust gas and a water curtain cabinet. The method comprises the following steps: exhaust gas suction, water curtain absorption, rotational flow washing, demisting absorption and exhaust gas pumping-out. A paint mist decomposition medicament and a paint mist trapping medicament are added circulating water. Starting and finishing of the water curtain absorption, rotational flow washing, exhaust gas suction and exhaust gas pumping-out steps are controlled through an infrared ray sensing device. The water curtain cabinet employs a water curtain baffle plate and a rotational flow device, paint mist removal effects of a spray cabinet is raised. The water curtain cabinet cooperates with addition of the paint mist decomposition medicament and the paint mist trapping medicament in circulating water, the situation can be prevented effectively that pain mist adheres to the inner walls of the rotational flow device and the water curtain cabinet, and the paint mist in the circulating water flocculates and floats, which facilitates cleaning of paint mist scum. Starting and finishing of the spray exhaust gas treatment operation can be controlled automatically through infrared ray sensing, usage is convenient and the energy saving effects are raised.

Description

technical field [0001] The invention relates to the technical field of painting and coating, in particular to a method for treating spraying waste gas and a water curtain cabinet. Background technique [0002] During the painting process, in order to ensure the air quality in the workshop, spraying exhaust gas collection devices are generally installed at the spraying points in the workshop. The purpose is to ensure the air quality in the workshop and to remove paint mist in advance for subsequent exhaust gas treatment to reduce subsequent treatment pressure. [0003] At present, two methods are generally used for paint mist pretreatment: wet water curtain cabinet and dry filter spray cabinet to collect exhaust gas. The dry-type spray cabinet adopts a high-density filter layer, and the paint mist is absorbed in the filter layer. When more paint mist accumulates on the surface of the filter layer, the air volume will decrease due to the decrease in the gap of the filter layer...

AI Technical Summary

Problems solved by technology

However, the paint mist sprayed with exhaust gas will adhere to the inside of the equipment, pipes and pump body. After a period of use, it will cause blockage of water and air channels, resulting in the failure of the purification treatment system to operate normally, affecting the effect of exhaust gas treatment, and affecting the water curtain. The cabinet causes damage, which affects its service life; the operation does not have the function of intelligent start and stop to save energy; on the other hand, the water curtain cabinets on the market need to be manually started and stopped frequently, which is inconvenient to use, and the water curtain cabinet is used for waste gas treatment The process cannot be automatically started and stopped according to the progress and end of the spraying process, which increases energy consumption

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