HAF | Apron Feeder

Drive Unit

The apron feeder is driven electro-mechanically. The conveying speed is infinitely adjustable. A back stop prevents the feeder from moving backwards.

Tractor type chains

The chains are heavy-duty, tractor-type chains, equipped with lifetime-lubricated links. Depending on the application, the chains are commonly offered as D7, D8, or D9.

Apron feeder Pans

An apron feeder pan is bolted to each link of the tractor chain. Every second plate is equipped with a carrier; this secures the material transport. The apron‘s specific contour assures that only very little material finds its way into the inside of the apron feeder.

Support Rollers | Return Rollers

The support rollers are bolted to the upper side of the frame and are lifetime lubricated. The tractor chain moves on these rollers. In the bunker feed-in area, support rollers are mounted on shock absorbers to reduce the shock loads on the apron feeder construction during tipping.

The lifetime-lubricated return rollers carry the outside edge of the apron feeder pans on the lower side of the frame.

Slide Rails

Slide rails are mounted under the apron feeder pans, along its full length. For added protection, additional slide rails are positioned in the main impact area, directly below the truck dump zone. These help to reduce shock loading.

Apron Feeder Protective Skirting

The sidewalls serve as the protective skirting, which is located above the apron feeder along its entire length. The design of the skirting is specific to the application, feed size, and expected material layer height.

Protection guards are located along the entire length of the apron feeder, preventing access to its moving parts during operation. During times of inspection or maintenance, these guards can easily be removed for complete access to the chain drive system. Furthermore, the operation of the apron feeder is continuously monitored by a speed monitor.

Spillage Conveyor | HCC

The spillage conveyor is a chain conveyor mounted directly on the apron feeder. Some rest material adheres to the apron feeder pans. This material falls off on the return side. The apron feeder and the spillage conveyor form a unit, but are to be operated independently.

Application

• For material extraction from feed hoppers and material conveyance
• Extra heavy duty design and the very latest technology, backed by an extensive reference list – proven success around the world!
• Exclusive “Tight Seal System” ensures that the pans remained sealed (no gap) during operation – each pan overlaps its neighboring pan, a result of engineering and precision machining
• Variable-speed drive either by hydraulics or by planetary gear and frequency-controlled electric motor
• Integrated spillage conveyor for removal of fine or sticky materials that may form on pans