Roasted Coffee Bean Silos and Conveying

Protecting Coffee Quality Through Every Process Stage

Coffee does not behave as one material throughout production. Green beans are robust enough for intake, cleaning, storage and pre-roast blending; freshly roasted beans are more fragile and sensitive to impact; ground coffee introduces fine particles, aroma exposure and degassing requirements. Each stage calls for a different handling approach. VOLDE develops storage, conveying and weighing systems around these transitions. In roasted-bean applications, the engineering focus is on moving coffee from the roaster toward storage, grinding or packaging with as little unnecessary mechanical stress as possible, while keeping the product path enclosed and measurable.

| Gentle Conveying of Roasted Coffee Beans

Freshly roasted beans are particularly sensitive at transfer points. A vacuum conveying system can be an effective solution where the roaster area must be connected to elevated silos or remote process points, but the result depends on how the line is engineered rather than on the conveying principle alone.

In VOLDE applications, conveying velocity, bend radius, route length, vertical lift and the number of product impacts are evaluated together. Product-contact materials and cleaning access are considered at the same time, because a coffee line must protect both the bean and the hygienic condition of the system. The objective is to prevent avoidable breakage before whole-bean packaging or grinding, not simply to achieve a target throughput.

| Roasted Bean Storage & Weighed Discharge

After roasting, silos often serve as an operational buffer between production stages. Different roast batches or coffee varieties may need to remain available independently until the next request comes from grinding, blending or packaging.

VOLDE configures stainless-steel roasted-bean silos around the available building geometry. Where access prevents one-piece installation, modular sections can be assembled on site. Level monitoring, product-appropriate discharge equipment and weighed outlet arrangements are integrated so that a selected silo can deliver a defined quantity to a mobile container, process hopper or downstream line. Material routing is then handled by the PLC according to the production plan.

| From Green Bean to Roast & Ground Coffee

A modern coffee plant may pass through three very different handling regimes. Green coffee is received, cleaned, stored and often blended by origin or recipe before roasting. Roasted whole beans require gentler transfer and intermediate buffering. Once coffee is ground, the process shifts again: fine particles, oxygen exposure and CO₂ release become part of storage and packaging design.

VOLDE therefore selects storage, conveying and weighing equipment according to the actual coffee state at each process step, rather than applying one generic bulk-handling concept to the entire plant.

| Protect What Roasting Has Created

Roasting develops the aroma and sensory profile of the coffee. The handling stages that follow should preserve that value while moving the product efficiently toward grinding or packaging.

| Integrated Coffee Handling & Automation

As the number of origins, roast profiles and downstream destinations increases, correct routing becomes as important as conveying capacity. VOLDE connects silos, transfer lines, weighing points and destination selection through PLC/SCADA so that each movement is associated with the right product and production request.

• Product and silo selection linked to production orders
• Target versus actual weights and material routing
• Roast/batch identity, inventory, alarms and consumption reporting

This control layer gives operators a clear view of where each coffee is stored, where it is going and how much has been transferred - without turning the process into a long list of isolated machine commands.