The unloading station is a steel frame that discharges the big bag on the NEVA carrier into production. A forklift picks up the carrier and places it on top of the station; when the base slide is opened, the material flows to the outlet underneath the station. There is no need to lift the big bag with a crane, hang it up or work underneath it.
Frame and legs
The base frame measures 1,380 × 1,380 mm and carries loads of up to 1,600 kg. The leg sets determine the working height, which is adjustable in 100 mm steps:
| Leg set | Working height |
|---|
| Small | 880–1,580 mm |
| Medium | 1,680–2,380 mm |
| Large | 2,480–3,180 mm |
| With casters | 1,040–1,240 mm |
The working height is chosen according to the equipment that goes underneath the station: a vacuum container needs low legs, while a dosing container or a machine-mounted hopper needs a higher leg set. Two stations can be joined side by side with a connecting plate. The caster set makes the station mobile; it is then used as a mini silo that can be moved around the production area.
Ready-made configurations
| Configuration | Components | Material |
|---|
| Plastics processing machines | Standard station, vacuum container, pole with Flow Head | Free-flowing and poorly flowing |
| Poorly flowing materials | Small station, vibrating platform, big bag activators | Powder, flake |
| Mobile mini silo | Standard station, caster set | Free-flowing; up to 1.5 tons per big bag |
| Pneumatic station | Operator-controlled pneumatic lifting, Sliding Pole | Free-flowing and poorly flowing |
Unloading a big bag takes less than a minute.
Add-ons
| Add-on | Purpose |
|---|
| Vacuum container | Vacuum suction directly from the big bag; 100 mm suction connection. With throttle valve or closed lid |
| Dosing container | Adjustable manual dosing of powder and granulate |
| Dust-free discharge spout | Gravity discharge with little dust |
| Big bag piercer | Pierces the big bag from below to open it for unloading |
| Vibrating platform | Keeps poorly flowing, bridging-prone material moving |
| Pneumatic discharger | Lifts the big bag pneumatically and forms it into a cone |
| Pneumatic slide | Opens the base slide automatically; operates on 7 bar compressed air |
| Pneumatic pushers | Lift the big bag from below and stop the flow |
| Filling support | For filling new big bags |
| Caster set | Makes the station mobile |
Connection to central conveying
With a vacuum container fitted, the station becomes a source point of the central material conveying system. The vacuum line is connected to the suction connection underneath the station; the material is drawn straight from the big bag to the dryer or to the hopper loader on the machine. Whether the connection diameter matches the line diameter in the plant is checked at the project stage.
Selection
The weight of the big bag must not exceed 1,600 kg. The station is used only with the NEVA carrier and is installed indoors; it is anchored to the floor at four points. Where forklift traffic is heavy, an impact barrier is recommended. Plan as many stations as there are different materials being fed at the same time.
