Big-bag connection systems for low-dust and safe emptying
When emptying big bags, the connection between the container and the production process must function reliably – especially when handling dusty products and different types of big bags. AZO offers a variety of big-bag connection systems designed to adapt to the specific task at hand: from the classic low-dust connection to vacuum docking and even a version with an integrated vibrating screen. This allows the product feeding process to be tailored to the big bag, the bulk material, and the process requirements.
BBA: Low-Dust Docking for Big Bags with a Discharge Hose
The BBA big-bag connection system is designed for low-dust docking and safe emptying of big bags, even those with an inlet. The outlet is routed through an inner tube and secured with a pressure disc. The double-tube design offers additional protection against dust escape, even if folds form at the big bag outlet. Displaced air and any dust generated can be extracted via a vacuum connection. This allows the big bag to be connected to the downstream process in a controlled manner.
An interchangeable inner tube is available as an option for different big-bag outlet diameters. This also makes cleaning easier. For bulk materials that do not flow easily, a vibration system can assist with emptying. An optional empty-bag sensor also enables timely big-bag replacement and helps prevent production downtime caused by an empty big bag.
Vacuum Docking: Dust-Tight for Big Bags Without a Discharge Hose
For big bags with no discharge hose or a short one, the big bag connection system with vacuum docking is used. Instead of routing the discharge through a connection nozzle, the big bag is lowered onto the docking system. A circumferential vacuum channel creates a temporary, dust-tight seal between the bottom of the Big-Bag and the connection system.
This makes the system particularly useful when different big bags from various suppliers are used and their designs vary. The simple, easy-to-clean design also saves space and height. The entire contents can be emptied into a downstream buffer tank in a short amount of time, provided the tank’s volume is sufficient for this purpose.
BBA…VS: Big-bag unloading with integrated vibrating screen
If, in addition to dust-tight product feeding, protection of the downstream process against foreign matter and coarse particles is required, the BBA…VS big-bag connection system with a vibrating screen is the ideal solution. The integrated screen removes foreign objects directly during product feeding before they enter the rest of the production line. Different mesh sizes and geometries allow for adaptation to the specific bulk material.
The intensity of the screen vibration can be adjusted continuously. At the same time, the unit was designed for quick disassembly. This allows for easy cleaning, maintenance, and product changeovers, thereby reducing associated downtime. The entire connection system can also be swiveled out of the work area—a benefit in tight spaces.
The Right Big Bag Connection for Different Process Requirements
The three models each have different focuses: BBA for low-dust, safe emptying of standard big bags; vacuum docking for big bags with or without a short discharge hose; and BBA…VS for applications in which foreign matter and coarse material must also be screened out. This allows the interface between the big bag and the production process to be specifically tailored to the respective application.
