Processed powder: maltodextrin with a bulk density of 500 kg/m³
Manufacturing of food flavours
Company specialized in mushroom extraction
Maltodextrin is packed in 20 and 25 kg bags. The customer wants a solution to unpack the raw materials and move them to a mixing tank;
Bag dumping station
The pallets of bags are positioned on the side of the bag emptying station. In order to ensure the ergonomics of the station and easy handling, the operator grabs the bags using a bag manipulator. The suction head of the bag manipulator is provided with a control handle fitted with a barrel allowing the load to be self-stabilized at any height. The sack lifting tube can rotate freely through 360°.
The operator positions the sack manipulator vertically to the bag to be moved. By actuating the control handle downwards, it increases the leakage on the vacuum line and allows the suction seal to be lowered.
Upon contact with the surface, the suction seal grips the bag. The control handle then allows the bag to be lifted or lowered at will. Once positioned at the designated drop-off area, the operator positions the control handle as far down as possible to achieve maximum leakage and lifts the suction head to release the sack on the screen above the bag dump station Sacktip®.
The access doors to the bag emptying stations are equipped with gas springs to keep them securely in the open and closed position, and facilitate their opening.
Once the bag cutting and discharge operation is completed, the operator evacuates the bag through the CBU60 bag compactor. The bag compactor limits the volume of waste by compressing the bags and stocking them in a polyethylene sheath. In addition, it eliminates the release of any residual dust from the bags in the workshop.
Once the maltodextrine falls into the hopper of the bag dump station, it passes through a tubular screw that has a mass flow rate of 2,000 kg per hour. It is used to feed the dense phase vacuum pneumatic conveying system. It is inclined at 30°. The rotation of its helical screw is adjusted by a speed variator.
A gearbox is installed under the tubular screw to facilitate the conveying of the bulk material to be conveyed to the VFlow® VFDEP cyclone with detached filter. This pneumatic conveying solution makes it possible to convey problematic bulk materials, protect the filter from possible steam rises during reactor loading and reintroduce the fines into the process to avoid any loss of products.
The separating cyclone, also known as the detached filter or suction cyclone, is coupled to the pneumatic conveying cyclofilter. It is equipped with a reintroduction pipe, allowing continuous collection of the fines vacuumed for reuse of the material in the process, a storage area with level detection by capacitive probe and a rotary airlock valve ERI 200² which continuously discharges it into the mixing tank.
The cyclofilter, on the other hand, "cyclones" the collected powder and thus carries out the air/product separation. The highly efficient filter integrated into the cyclone ensures the final separation of the air and the protection of the vacuum pump (suction unit). A compressed air cleaning system allows the filter to be cleaned at each batch of conveying.
The pneumatic conveying system achieves a throughput of 4 m³ per hour, or 2 tons per hour for a bulk material with a density of 0.5.