16.8.2024

What is a drag chain conveyor?

Drag chain conveyoris a piece of industrial equipment designed to move materials efficiently and safely. It is particularly useful when handling large quantities of heavy or hot materials. Drag conveyors are common in many industries, such as metallurgy, power plants and chemical plants.

Working principle of the drag chain conveyor

Drag chain conveyor works on the principle, where the chain drags the material along in a closed channel. This allows the material to be transported over long distances without being exposed to external factors. Flights attached to the chain move the material forward, a process that is highly efficient, especially when handling heavy and hot materials.

The drag conveyor is usually made of steel and can be equipped with various additional features, such as water cooling. Water cooling allows the material to be cooled as it is conveyed, thus protecting the conveyor from thermal effects. This is particularly important when handling very hot materials.

Advantages of the drag chain conveyor

Drag chain conveyors have several advantages over other material handling equipment. Firstly, they are very cost-effective in the long term. Although the initial investment can be high, the long lifetime and low maintenance costs of drag conveyors make them economically viable solutions.

Secondly, the drag conveyors are safe to use. Because they are closed systems, they reduce the risk of workers coming into contact with hazardous materials. This is particularly important in industries handling toxic or otherwise hazardous materials.

Applications in industry

Drag chain conveyors are widely used in various industries. In metallurgy, they are indispensable for transferring hot dusts and abrasive minerals during the smelting process. In power plants, drag conveyors help move fuels and ash, improving plant efficiency and safety.

In chemical plants, drag conveyors are useful for handling a variety of chemicals and raw materials. They allow materials to be transferred safely and efficiently, which is essential for the smooth running of the production process.

Materials and construction

The drag chain conveyor structure is usually made of carbon steel, but it can also be made of heat-resistant steels or stainless steel. This depends on the characteristics of the material to be conveyed and the conditions prevailing in the conveyor. Various types of steel are used for the internal components, selected to withstand wear and heat.

In special cases, the chains of the drag conveyor can be made of refractory steel or stainless steel. This increases the durability and service life of the conveyor, which is important in harsh industrial environments.

Maintenance and servicing

Maintaining a drag conveyor is relatively simple, but it requires regular maintenance to ensure optimal operation. Chain and flight inspection and replacement are the most common maintenance operations. It is also important to check the condition of the conveyor trough sections and to ensure that it is clean and free of obstructions.

Following the maintenance programme will extend the life of the conveyor and reduce downtime. This is particularly important in industrial environments where production downtime can be very costly.

Special applications

Drag chain conveyors can be tailored for a variety of special applications. For example, the wet drag conveyor is designed to handle bottom ash and slag, making it easy and safe to handle these materials. The wet drag conveyor can cool and transport material at the same time, protecting the conveyor from thermal effects.

Another special application is ATEX-certified drag conveyors designed for explosive environments. These conveyors meet strict safety requirements and are essential for certain industrial processes.

Summary

Drag chain conveyor is a versatile and efficient piece of equipment that is indispensable in many industries. Its operating principle, advantages and applications make it an excellent choice for material handling. The design and materials of the drag conveyor can be tailored to meet specific needs, thus increasing its range of applications.

Maintenance and servicing are important to ensure optimal operation of the conveyor. Special applications such as wet conveyors and ATEX certified conveyors further extend the range of applications for the drag chain conveyor. All in all, the drag conveyor is a cost-effective, safe and sustainable solution for industrial material handling.