Feeding Technology
Feeding technology comprises methods and technical systems used to introduce materials into a production process in a defined quantity.
How does feeding technology work?
Depending on the application, bulk materials like powders, granules, fibers, or flakes can be dispensed, as can liquids. The crucial factor is that the required amount of material be supplied with the necessary precision and in a consistent, reliable manner.
Volumetric or gravimetric feeding
A basic distinction is made between volumetric and gravimetric feeding. In volumetric feeding, material is fed based on its volume. Gravimetric feeding, on the other hand, is based on the material's actual weight. During the feeding process, the change in weight per unit of time is measured, and the feed rate is adjusted accordingly.
Which feeding technology is suitable for an application is not solely dependant on the desired feed rate. Equally important are the properties of the material to be processed. Bulk density and flow properties, for example, can have a significant impact on how consistently a bulk material can be discharged and fed. The required feeding accuracy, the space available at the installation site, as well as the requirements for cleanability and product changes also play a role.
Feeding technology for industrial processes
Feeding technology is used wherever raw materials, additives, or other components need to be precisely fed into a process – for example, in the plastics, food, pharmaceutical, chemical, or building materials industries.
Depending on material and process requirements, different feeders are used. These include single- and twin-screw feeders, vibrating feeders, loss-in-weight feeders, and weigh-belt feeders. When combined with suitable weighing and control technology, even complex feeding tasks can be automated and carried out in a reproducible manner.