Rotary Feeder

Components of a Rotary Feeder

• The rotor shaft is a component found at the center of the electric motor. It produces a torque force, or motion, that causes movement of the material through the rotary feeder.Housing is the metal shell that contains and protects the electrical components of the rotary feeder. It forms the shape of the rotary feeder.
• Bearings are the motion slippers that allow the rotor shaft to rotate without much friction. They form the ends that hold the rotor shaft in position and allow for lubrication.
• Head plates are composed of seals that hinder spillage of material out of rotor pockets to the bearings.
• Packing seals help to minimize fluid loss.

How Rotary Feeders Work

A rotary feeder works by separating pressure differences while allowing the passage of material into the processing system. To best illustrate how a rotary feeder works, it is best to imagine how a revolving door works. It permits the passage of material through while maintaining the difference of pressure in the building against the outside pressure.

Types of Rotary Feeders

There are several common types of rotary feeders that are described below.

Angle of Response Rotary Feeders

Commonly known as ARFs, these feeders have varied speeds. They usually follow the direction of material flow and make use of a rotating member and the articulable gate to control the flow volume of material. There is also what is called drum rotation. This regulates and prevents the backflow of material and reduces overloading, product distraction, formation of fine dust, and ensures a uniform flow of material.

Rotary Airlock Feeders

They are also called drop-through rotary feeders. They are well-crafted for rough applications with an outboard bearing style. This is well-made for handling contamination and abrasive products. They are used in high-pressure pneumatic conveying systems that have high temperatures.

Blow-through Airlock Feeders

It is best suited for pneumatic conveying systems that deal with food, grain, chemical, pharmaceuticals, plastics, baking, or milling. They have replaceable shaft seals, outboard bearings, and a 10-vane open-end rotor.

Rotary Airlock Feeder Degassing

These feeders are usually set to feed material in a pneumatic conveying line. Rotation of the valve, coupled with the leakages between the rotor and the stator, cause gas from the conveying line to go upstream and be emitted.

Easy-Clean Rotary Feeders

They are convenient in the sense that they are fast, can be cleaned quickly and thoroughly, disassembled, sanitized, and maintained easily. They need no sophisticated tools to disassemble thereby enhancing productivity. Reassembling is done within the shortest possible time and it re-establishes internal clearances automatically. They are usually used for mixing batches.

Filter Valve

These are generally cheap, rotary feeders specifically made for light-duty dust collector systems.

Knife Rotary Feeder

This type of feeder is made for discharging secondary fuel such as plastic or wood. The knife cuts huge material to prevent rotor blockage.

Applications of Rotary Feeders

• Pneumatic systems
• Plastic production
• Chemical and food processing
• Manufacture of pharmaceuticals
• Conveying abrasives

Benefits of Rotary Feeders

• They limit air entry into the material being conveyed.
• The weights of materials put into the production process are comparable.
• They are effective and efficient, performing the dual purpose of limiting framework air and managing material stream between vessels.
• They can deal with numerous ranges of powders and granular staff such as sugar, cocoa, starches, flour, and many more.

Disadvantages of Rotary Feeders

• They are expensive to run.
• They generate positive pressure.
• There are government rules regulating their design and use in certain situations.

Choosing the Proper Rotary Feeder Manufacturer

To make sure you have the most productive outcome when purchasing rotary feeders from a rotary feeder manufacturer, it is important to compare at least 4 companies using our list of rotary feeder manufacturers. Each rotary feeder manufacturer has a business profile page that highlights their areas of experience and capabilities and a contact form to directly communicate with the manufacturer for more information or request a quote. Review each rotary feeder business website using our proprietary website previewer to get an idea of what each business specializes in, and then use our simple RFQ form to contact multiple rotary feeder businesses with the same form.