This document introduces the technical specifications and features of the VNA aluminum alloy supersonic drainage nozzle. The nozzle balances the airflow inside the blowing pipe to distribute the compressed air evenly to each blowing hole, ensuring that the compressed air for dust removal is injected into the center of the filter bag vertically. Compared with ordinary blowing systems, installing this nozzle can reduce the resistance caused by blowing holes, and improve the dust removal efficiency.