The rotary feeder is used for dosing and regulating the flow of bulk solids when loading into a pneumatic conveying system.
All materials from which the devices are manufactured are characterised by their resistance to abrasion. This makes rotary feeders reliable, ergonomic and durable. They are able to provide high performance and efficiency with uninterrupted operation
The rotor is the main element of the feeder. It looks like a drum divided into several compartments by radial sectors. The size of these cells (sectors) determines the capacity of the entire plant. The rotor ensures minimum clearances during unloading and loading, thus reducing product losses on the line. Electric drive - a system consisting of conversion, transmission and control devices, as well as a motor. The element provides the required rotational speed of the blades.
The rotary feeder has a simple structure and consists of a housing, rotor, electric drive and side covers (flanges). The body of the device is made of cast iron or steel of any grade (stainless, carbon, structural).
Rotary feeder: principle of operation
In the functioning of the rotor mechanism, all elements of the equipment are involved. The cavities of the rotor are pockets for the product to be fed. Their rotation is carried out due to the operation of the electric drive (or gearmotor).
Rotary feeder
(star valve)
During rotation around its axis, the rotor cavities capture the product particles and transport them downwards. After half a revolution, the rotary drum alternately opens and closes the filling and unloading opening, after which the product is drawn out of the feeder sector by air.
Due to the continuous vane mechanism, the rotary feeder ensures uniform discharge of the product without disturbing the tightness of the system, which is important when transporting the product in a pneumatic conveyor.
A bearing protection mechanism has been developed for long-lasting trouble-free operation of our feeders.
In order to eliminate product clogging, air is supplied to the bearing supports of the rotary feeder housing. The air supply is switched on at the same time as the feeder. The air enters the bearing housing between two sealing rings.
As the shaft rotates, an air lock is created which prevents the product from entering the bearing. In this way, product blockage is eliminated, which guarantees trouble-free operation and protects the bearing arrangements from wear.
Rotary feeders have a wide range of applications. The devices can be used in any production, where it is necessary to dose and regulate the flow of bulk, granulated, crushed or powdered materials with high fluidity and not prone to compaction. They are also used for unloading silos, hoppers and other containers.