The Acrowood Disc Scalper Screen eliminates material handling problems and downstream damage to equipment. Disc Scalping screens are high capacity shaft-based machines with spacers separating individual discs down the length of the shaft. The intent is to let the majority of chips pass quickly between discs and over the round surface of the spacers.
The Acrowood Disc Scalper is designed to remove gross oversize pieces which could cause material handling problems in or damage to downstream equipment.
Shafts are assembled using pipe spacers and heavy AR plate discs on a mechanical tubing central core. Spacing is adjusted to suit specific applications. Different metallurgies and disc thicknesses are available.
Sprockets with hardened teeth are fixed to the shafts using tapered bushings. Pillow block bearings are located outboard of the hopper walls, away from potential fines contamination. The use of sintered bushing chain completes this reliable drive system and requires no periodic lubrication or oil bath.
Scalping screens typically have an interfacial opening (IFO) of between 0.5 and 6 inches. The overs intended to be rejected are typically larger than the IFO by 0.25 to 1” and are related to the spacing chosen for the application.
Robust design | Trouble-free operation | Belt or lube-free chain drive
Outboard mounted pillow block bearings removed from dust contamination.
Shaft seals contain fugitive dust from the hopper walls.
Request the disc scalping screen brochure in PDF format for easy reading.
Scalping Screens are high capacity, shaft-based machines with spacers separating individual discs down the length of the shaft. The intent is to let the majority of chips pass quickly between the discs, sliding between discs and over the round surface of the spacers.
Fines and grit must be removed, and overs must be processed into Accepts. The pin chips, if screened out, can be sent to the batch digesters in the same mill allowing the continuous digester to operate at a maximum rate.
Over a century of experience engineering equipment and machinery for pulp and paper, sawmill, panel board and biomass industries.
View the gallery of chipping, cracking and slicing machines, chip screening & material distribution machines, and rotary & batch debarker machines.
Acrowood’s clients are located around the world and operate in the pulp