Pneumatic conveying is a device that uses the energy of airflow to transport powdery and granular materials in a sealed pipeline along the direction of airflow. It is a specific application of fluidization technology. Pneumatic conveying can be roughly divided into two types based on its working principle: suction type and pressure type. Suction pneumatic conveying involves drawing air and materials together into the pipeline and transporting them using low-pressure airflow, hence it is also called vacuum suction conveying. Pressure pneumatic conveying uses compressed air at a pressure higher than atmospheric pressure to push materials for transportation.

The pneumatic conveying device has a simple structure and is easy to operate. It can be used for horizontal, vertical, or inclined transportation. During the conveying process, it can also simultaneously perform physical operations such as heating, cooling, drying, and airflow classification of materials, as well as certain chemical operations. The main characteristics of pneumatic conveying are large conveying capacity, long conveying distance, and relatively high conveying speed. It allows for feeding at multiple points and then conveying to multiple discharge points.

Based on the density of particles in the conveying pipeline, pneumatic conveying is classified into: dilute phase conveying, dense phase conveying, and negative pressure conveying.

The positive pressure pneumatic conveying system produced by Sichuan Zhongjin Powder Equipment Co., Ltd. features a simple system structure, flexible layout, reliable operation, high automation, low system investment, high ash-to-air conveying ratio, low flow velocity, minimal maintenance workload, and low annual operating costs. This system includes a feeding device, a conveying bin pump, pipelines, valves, a top silo dust removal device, a bottom silo aeration device, a bottom silo discharge device, a power gas source, and a programmable control device.

Performance characteristics of this pneumatic conveying system:

I. Long conveying distance: Suitable for an equivalent conveying distance of 50-1500 meters, with a lifting height of up to 75 meters;

II. Strong conveying capacity: The conveying capacity can reach 100T/h;

III. Wide temperature range for conveying materials: The minimum temperature can reach -20°C, and the maximum temperature is 450°C.

IV. Minimal Equipment Wear: Uses ordinary seamless steel pipes as the conveying pipes.

V. Long service life: The service life can reach up to 20 years.