The functions of the explosion-proof positive pressure cabinet with an external cleaning filter include: Explosion-proof: By isolating ignition sources through the filter screen, the pressure inside the enclosure is maintained higher than that outside, preventing flammable gases from entering the positive pressure chamber, thereby achieving explosion-proof purposes. Heat dissipation and cooling: The filter screen can carry away the heat generated by electrical components inside the cabinet, serving to dissipate heat and lower temperatures. Equipment protection: The explosion-proof positive pressure cabinet can protect the safe operation of electrical equipment in hazardous environments, reducing equipment failure and damage rates. Improving production efficiency: The stability and reliability of the explosion-proof positive pressure cabinet ensure long-term stable operation of equipment, thereby enhancing production efficiency. Air purification: The filter screen can filter out particulate matter and harmful gases from the air entering the cabinet, ensuring the cleanliness of the air inside. The external cleaning filter of the explosion-proof positive pressure cabinet plays a crucial role in ensuring safe production, improving equipment operational efficiency, and maintaining the working environment.