The electrostatic precipitator consists of a rack, a clean air valve or ionizing air bar, a dust hood, an ionizer, a sensor, or a foot switch. Whether in the purification workshop or in the ordinary factory area, the product workpiece can be automatically cleaned, and the efficiency is much higher than that of ordinary manual cleaning. The working width and suction direction will be customized according to the customer’s requirements, and the number of air valves depends on the size and shape of the workpiece to be cleaned.