BIG-BAG Emptying

The integrated electric chain hoist on a trolley beam offers several key advantages over a forklift truck. First, it eliminates the need to manoeuvre a heavy forklift in the confined space around the station — the operator lifts the bag at the push of a button, and the trolley guides it along the beam directly above the docking point. Second, the bag is lifted from the side or rear of the station, significantly improving operator safety (no risk of crush injuries). Third, a station with an integrated hoist requires a smaller working footprint — no additional manoeuvring zone for a forklift is needed. Additionally, the hoist eliminates the risk of structural damage to the station caused by forklift forks.

Pneumatic bag massagers gently knead the material inside the bag, breaking up bridges and rat-holes caused by caking or powder cohesion. Unlike vibrators, massagers do not transmit vibration to the entire station structure (reducing noise and fatigue loading) and do not damage the structure of delicate products — such as granules, flakes or crystals. Massagers are particularly effective with poorly flowing (cohesive) materials that tend to hang up in the bag spout. Additionally, massagers consume less energy than vibrators and require minimal maintenance. For materials with moderate flowability, a vibrating rest plate is sufficient — we select the right solution based on the specific material properties.

Every BSB station is engineered from the ground up for each specific client application — we do not offer a single standard model. This means we tailor the frame dimensions to the available space and bag sizes, select the appropriate flow promotion system for the material properties, design the process interface (whether a feeder, buffer hopper or pneumatic conveying connection sits below the station) and incorporate industry-specific requirements (ATEX, FDA, GMP). As a result, the station fits seamlessly into the existing production line, and the operator receives a single, fully integrated solution rather than a set of uncoordinated components. The modular construction also means the station can be expanded later — for example, with a weighing system, dust filter or roller conveyor — as process requirements evolve.

Yes — the optional pneumatic flow choke allows the bag spout to be closed dust-free at any point during discharge. This enables partial emptying: only a portion of the material is discharged, the bag is sealed and stored for later use. This is particularly useful in applications where a precise batch of material is needed, or where different bags contain different recipe ingredients and discharge is carried out sequentially. Combined with the optional load-cell weighing system, the operator has full control over the quantity of material dispensed.

Dust-free operation is ensured by the dual-ring docking station. The procedure is as follows: the bag is raised by the hoist into the station, the operator opens the docking cover, threads the bag discharge spout through the inner ring and closes the cover — creating a hermetic seal. Only then is the bag spout opened and material begins to flow within a fully contained system. The cover pressure is adjustable, allowing the seal to be adapted to different spout types and diameters. Optionally, the station can be equipped with rear-side dust extraction and a connection to the plant’s central dust collection system.