Filtering device for painting room

Abstract

The invention provides a filtering device for a painting room. The filtering device comprises at least one group of filtering single pieces which communicates with the waste gas outlet of the painting room or at least two groups of filtering single pieces which are arranged in parallel, wherein each filtering single piece comprises a bag dedusting component, an active carbon adsorption component, an exhausting component and a parameter measuring component; each bag dedusting component comprises a bag dedusting body, and an inlet and an outlet formed on the bag dedusting body; the active carbon adsorption component comprises a shell and an active carbon adsorption layer which is detachably arranged on the middle part of the shell; the shell is partitioned into an upper cavity and a lower cavity which are arranged separately by the active carbon adsorption layer; the upper cavity is provided with an airflow outlet communicating with the exhausting component; the lower cavity communicates with the outlet; the parameter measuring component comprises a pressure difference measuring single piece and a hydrocarbon organic matter detection single piece; the two ends of the pressure difference measuring single piece are arranged on the inlet and the outlet respectively; the hydrocarbon organic matter detection single piece is arranged at the air outlet of the exhausting component. The filtering device has a simple structure and a good dedusting effect.

Description

technical field [0001] The invention relates to the technical field of spraying, in particular to a filter device used in a spraying room. Background technique [0002] When the current automobile 4S shop, repair shop and other places are painting, the air in the spraying room contains a lot of dust and volatile organic compounds (VOCs). Air, purify the air in the spray room. [0003] Existing ventilation equipment generally directly uses exhaust fans to perform forced convection of air, which causes harmful dust and VOCs to be directly discharged into the atmosphere, causing environmental pollution. [0004] There are two main methods for the treatment of exhaust gas in the current spraying room: [0005] 1. Dry adsorption method. This method is specifically: use a filter or a dust collector to collect dust, and use activated carbon to adsorb VOC to purify the exhaust gas in the spraying room. This method has the following defects: with the increase of the use time of th...

AI Technical Summary

Problems solved by technology

This method has the following defects: with the increase of the use time of the filter adsorption device, the filter adsorption capacity gradually decreases, the dust filter adsorption is not complete, the VOCs adsorption is not complete, and the emission standard cannot be met.

This method has the following defects: it is easy to cause secondary pollution and with the increase of the use time of the absorbent, the adsorption capacity of the absorbent decreases, the absorption liquid needs to be replaced, and the absorption waste liquid needs special treatment, and the treatment cost is too high

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