This type of system is a batch feeding system. A distinctive feature of such conveying systems is the high gas flow rate and relatively high pressure in the conveying pipeline at both the initial and terminal ends of the conveying process. A characteristic "whoosh" sound signals the completion of the conveying cycle. The system consists of a compressor, a pressure vessel (autoclave), and conveying pipelines, among other components.

A. This conveying method is a low-cost option and operates as a batch conveying system;

B. Suitable materials: It is typically suitable for long-distance conveying pipelines, as well as granular materials with good fluidity—both abrasive and non-abrasive types;

C. Components: It consists of a pressure vessel (sending tank), a valve group (including feed valve, discharge valve, air inlet valve, safety valve, and balance valve), a pressure transmitter, a level gauge, an electrical control system, as well as a conveying pipeline, a terminal separation silo, a rotary valve, and a dust removal system;

D. During the conveying process, there is high gas flow and relatively high conveying pressure at both the initial and terminal ends of the pipeline. Sometimes, a distinct "whoosh" sound indicates the end of the conveying process;

E. The power source is generally compressed air or compressed nitrogen.