The pneumatic conveying system relies on gas flow kinetic energy to realize long-distance transportation of powdery and granular materials inside closed pipelines. Featuring cleanliness, high automation and flexible layout, it has become the core supporting process equipment for powder processing in chemical, pharmaceutical, food, mining and building materials industries.
The complete system mainly consists of air supply unit, feeding tank, conveying pipeline, unloading separator, dust removal and filtration system as well as intelligent electric control module. Based on the solid-gas concentration during conveying, it is mainly divided into two mainstream types: dilute-phase conveying and dense-phase conveying.
The dilute-phase conveying adopts high-speed airflow with low material concentration, suitable for light materials with good fluidity and short-to-medium transportation distance. Dense-phase conveying transports materials at low velocity and high material concentration. It causes minor abrasion to pipelines and materials, making it ideal for abrasive, fragile or high-density powders.
Different from conveyors and screw conveyors, the pipeline layout of pneumatic conveying systems is free from ground space restrictions, which facilitates the optimization of factory production line layout. The fully enclosed transportation mode effectively prevents material leakage, dust flying and product contamination, meeting strict production standards of food hygiene and pharmaceutical clean workshops. Equipped with real-time monitoring sensors, the system continuously tracks conveying flow and material level data to realize unattended operation and greatly cut labor handling costs.
With stricter environmental regulations and widespread intelligent manufacturing, pneumatic conveying systems are gradually replacing extensive mechanical conveying methods. Proper selection between dense-phase and dilute-phase processes according to conveying distance, material properties and production capacity demand, combined with professional pipeline design and stable pressure air source configuration, enables long-term stable operation and reduces subsequent maintenance costs. It offers reliable support for powder processing enterprises to achieve production upgrading integrating quality improvement, consumption reduction and environmental protection.