The low-noise throttle nozzle for this project is a new type of low-noise throttle nozzle. It is based on the principle of the Coanda effect and is designed with a special flow channel structure that conforms to aerodynamics. It adopts a miniature muffling nozzle structure, with a circular hole in the middle of the nozzle and symmetrical notches on all sides. The air flow is concentrated to ensure that the air nozzle achieves high airflow momentum while reducing working noise and air consumption. Compared with commonly used open pipes, the jet noise is reduced by 5-10 dB(A), effectively reducing the air flow required for operation, and saving 20%-50% energy consumption. The nozzle is a purely mechanical structure with no worn parts inside and a designed service life of up to 10 years.

The new low-noise throttle nozzle of this project is suitable for use in the process sections of the production line where compressed air is used for transmission, drying, purging, and cooling, which can help production companies achieve better economic, environmental and social benefits. The research results of the project have been successfully applied to various purging production lines, achieving excellent noise reduction effects in comprehensive noise management, and have been recognized by many users.