What is an air conveyor?

Compressed air conveyor is a conveyor system used in industry to move powdered and granular bulk materials in a closed pipeline by means of compressed air. Pneumatic conveying is based on the use of air pressure to move the material, allowing dust-free and hygienic transport. This article answers the most common questions about the operation, applications and advantages of pneumatic conveyors in industrial material handling.

What exactly is a compressed air conveyor?

A pneumatic conveyor is a pneumatic conveyor system that uses compressed air or other carrier gas to move bulk materials in a closed pipeline. The system relies on the force generated by the air flow to transport the material from the point of origin to the destination without mechanical moving parts along the transport path.

The principle of pneumatic transport differs significantly from traditional mechanical transport methods. Whereas mechanical systems use physical contact to move the material, pneumatic conveying uses the energy of air pressure. This allows material to be transported over long distances, high altitude differences and complex routes.

The method is also called pneumatic transport according to its operating principle. The term comes from the Greek word ”pneuma”, meaning air or breathing, referring to the central role of air-based operation in industrial bulk materials handling.

How does an air conveyor work in practice?

The operation of a pneumatic conveyor starts with the creation of air pressure by means of a fan or compressor. The material is fed into the system through special feeders that meter the material evenly into the air stream. Transport takes place in a closed pipe system where the airflow carries the material towards its destination.

In the transport process, material and air travel together in a pipeline to form a mixture of material and gas. At the destination end, the material is separated from the air stream by separators such as cyclones or filters. The clean air is discharged from the system, while the material is collected in a receiving tank.

Pneumatic transport can be carried out in two main ways: as pressure transport or suction transport. In pressure transport, the material is pushed through the pipeline by higher pressure, while in suction transport, the material is sucked in by lower pressure. The choice of transport method depends on the characteristics of the material and the process requirements.

What are air conveyors used for in industry?

Air conveyors are widely used in the chemical, construction, energy and plastics industries. The systems are particularly suitable for handling powdered and granular materials such as cement, sand, plastic granulate and various chemicals. Industry Pneumatic transport is used in various sectors because of its versatility and reliability.

In the construction industry, pneumatic conveyors are used to transport cement, lime and other building materials. In the chemical industry, the systems allow safe and clean handling of chemicals. In the power generation industry, pneumatic conveying is suitable for the transfer of fuels and ash.

Pneumatic material transfer is possible in a wide range of conditions. The system works in high and low temperatures, in humid and dry environments. The sealed design protects the material from external factors and allows transport in harsh industrial environments.

What are the advantages of air conveyors compared to other transport methods?

The key advantages of pneumatic conveyors are cleanliness, flexibility, energy efficiency and low maintenance. The closed system prevents dust dispersion and material waste, improving occupational safety and process efficiency. Transport system can be designed to follow complex routes without the constraints of mechanical parts.

Compared to mechanical conveying systems, pneumatic conveying requires less maintenance because there are no moving parts in the pipeline. This reduces operating costs and improves the reliability of the system. Energy efficiency is good, especially over short and medium distances.

Being environmentally friendly is a major advantage, as the system reduces material waste and dust. Pneumatic conveying is best suited to situations where high levels of hygiene are required, complex transport routes are required or where the material needs to be protected from external factors. The system is easy to automate, improving process controllability and repeatability.