Weighted Vacuum Conveying

Vacuum Conveying with Integrated Weighing

VOLDE Weighed Vacuum Conveying Systems combine enclosed pneumatic transfer and gravimetric weighing within a single integrated process. Powders and granules are conveyed under negative pressure into a VACUMATE weighing unit mounted on load cells, where the transferred material is continuously monitored by weight. As the target batch weight is approached, the conveying sequence is controlled according to the required dosing accuracy. Once the target quantity is reached, conveying is stopped and the weighed material is discharged into the downstream mixer, process hopper or production equipment. By combining material transfer, weighing and batch control within the same system, weighed vacuum conveying provides a compact and flexible solution for recipe-based production, mixer feeding and batch dosing applications.

| Precision Weighing Under Vacuum

At the heart of the system is a VACUMATE weighing unit supported on load cells. Material is drawn from the selected source through the vacuum conveying line and collected directly inside the weighing unit. The control system continuously monitors the accumulated weight and manages the conveying sequence according to the target batch quantity.

Once weighing is completed, the vacuum cycle ends and the measured material is discharged toward the next process stage. Depending on the application, discharge can be controlled by butterfly valves, rotary valves or other process equipment.

• Conveying and gravimetric weighing in one integrated system
• Continuous weight monitoring during material transfer
• Automatic control according to target batch weight
• Recipe-based sequential material handling
• Automatic discharge to mixers and process equipment
• PLC/SCADA integration and batch reporting

The filtration system separates the conveyed product from the vacuum air stream, while automatic pulse-jet cleaning maintains filter performance between conveying cycles.

System configuration is determined according to the material characteristics, required batch quantity, weighing resolution, conveying distance and process conditions. VACUMATE volume, load cell capacity, filtration area, vacuum capacity and pipeline diameter are therefore engineered as part of the complete weighing and conveying system.

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Pneumatic Conveying Systems

| Recipe-Controlled Mixer Feeding

Weighed vacuum conveying is particularly effective where multiple ingredients must be collected, weighed and transferred to a common mixer or process vessel. Materials can be drawn sequentially from bag dump stations, big bag unloading systems, silos, bins or other storage points according to the selected production recipe.

A single VACUMATE weighing unit can receive different ingredients in sequence, with each quantity monitored against its individual recipe setpoint. Once the required batch is completed, the collected materials are discharged into the downstream process.

This approach reduces the need for separate conveying and weighing equipment while providing centralized control over material transfer and batch preparation.

• Multiple ingredients handled through a single weighing unit
• Automatic ingredient selection according to recipe
• Sequential weighing to individual target quantities
• Enclosed transfer from storage to process
• Reduced operator intervention
• Repeatable batch preparation
• Recipe, batch and consumption data recording
• Integration with mixers, dosing systems and production control

VOLDE Weighed Vacuum Conveying Systems can be configured for applications including PVC dry blend and compound production, masterbatch lines, chemical blending, food ingredients and other processes requiring controlled transfer and gravimetric batch preparation.