National Bulk Equipment automated bulk bag filling system

National Bulk Equipment (NBE) has introduced an automated bulk bag filling system which has been designed to ensure extended duty cycles in demanding operating environments. The NBE bulk bag filler is built on a corrosion-resistant, hot-dip galvanised stainless steel and carbon steel structural framework.

Component assemblies, such as the hydraulic and pneumatic systems, are also constructed of stainless steel and have chrome-coated rods and subassemblies that give long-term protection against corrosion and oxidation. Automation controls, system utilities and connectors are hermetically sealed to prevent damage from contact with liquids and material contaminants.

The PLC and HMI enclosures are 304 stainless steel, NEMA Type 4X and are coated with a two-part epoxy finish. They are independently air conditioned to eliminate the build-up of internal condensation. The bulk bag filler offers repeatable operation at rates of up to 13,600 kg/h.

The machine can operate in conditions were ambient temperatures exceed 38°C and relative humidity is 70% or higher. Material throughput accuracy is aided by the NBE NTEP-certified (Cert No 07-108) hang-weigh scale system.

The system provides repeatable weighing to an accuracy of ± 0.5% of total bag weight, according to the company. The filler has an automated densification platform that, during filling, directs 3Gs of high-speed, low-intensity vibration to the base of the bag to evenly settle material.

Following the fill and weigh stages, a 2250 kg capacity accumulation conveyor automatically removes filled bags from the filling sequence and stages them for retrieval.