THE MOBILE DEDUSTING UNIT
The XP360 DeDuster closed-loop compact cyclonic dedusting (CCD) system can remove angel hair and dust particles as small as 1.6 micron from a product stream without impacting the loading capacity. The customized unit’s low height profile allows it to be easily moved under the company’s silos using a forklift. A telescopic pipe connects the unit’s inlet to a silo discharge and another connects the unit’s discharge to a truck inlet. The silo outlet flanges and the truck inlets have fast-connectors for quick assembly and disassembly. The unit is easily cleaned with compressed air or water between product changeovers to prevent cross-contamination, and a standard clear polycarbonate panel (hardened glass is available on request) allows an operator or camera to monitor the dedusting process. The dedusting unit is partitioned into three cleaning zones—the upper wash zone, the venturi zone, and the lower wash zone — that are separated by wash decks. During operation, the resin pellets discharge from a silo by gravity via the telescopic pipe to the dedusting unit. As the pellets pass through the unit’s inlet, a primary flux field generator creates a magnetic field that interrupts the electrostatic charges that bond the dust to the pellet surfaces, allowing the dust to detach from the pellets. After passing through the inlet, an adjustable inlet deflector distributes the pellets proportionally onto the first wash deck in the unit’s upper wash zone, where upward-flowing pressurized air further separates the dust particles from the pellets. A wash deck has slots and holes that are located and designed to enhance the air-wash effect to effectively move the dust up and away from the pellets. The pellets move off the wash deck to the unit’s venturi zone, where regulated high-velocity updraft air moves the dust particles and any angel hair away from the pellets and into a vacuum airflow that pulls them out of the unit to a dust collector. The airflow in the venturi zone can be increased or decreased, depending on the dust particle size to be removed. The pellets continue moving by gravity to the second wash deck in the unit’s lower wash zone, where any remaining dust particles are removed from the pellets to ensure complete cleaning. The virtually dust-free pellets discharge from the unit via the telescopic pipe into a truck that transports them to the designated facility for processing.