This NBE bulk bag unloader was designed, engineered, and built to address specific dust reduction, and process operation efficiency requirements identified by NBE during the application assessment. A non-NBE unit, that was previously in operation, often caused material dust release during the bag spouting sequence; presenting operator hazards and slowing process cycle times and changeovers. In response, NBE developed a process-specific bulk bag discharger that enables the operator to easily and properly spout the bulk bag while simultaneously enclosing the bag spout interface within the NBE E3® closed-cycle dust recovery system. The NBE E3® closed-cycle dust recovery system prevents the release of dust into the work area by recovering within the E3® the contained dust and re-introducing the material dust back into the discharge path. As material flow moves from the bulk bag through the bag spout interface, the suspension system of the E3® automatically reacts to the lessening volume of material in the bulk bag and lowers the bag spout interface to pull the bag into a taut, conical shape. This bag-shaping function of the E3® ensures no residual material remains in the bulk bag and, as a result, no residual material dust is released during unspouting. Personnel, product, and process operations are protected from harmful contaminants.
This NBE bulk bag discharger unloads various semi free-flowing, hygroscopic, contaminable powders at a rate of 6,000 lbs/hr. Changeover times were significantly shortened due to reduced equipment cleaning times and improvements in operator bag spouting efficiency.