Big Bag Extraction: As Simple as Possible

Problem

The transfer of powdery, dusty bulk materials often occurs from Big Bags of various types and sizes. A common issue during extraction from the Big Bag is the release of dust, which can lead to material loss.

Solution

LAB offers a Big Bag Extraction Station specifically designed for discharging bulk materials from Big Bags. This station is available either with a chain hoist and crane portal or as a extraction station with hydraulic cylinders that automatically stretch the Big Bag during the emptying process.

The extraction technology within the hopper is identical, and additional features such as sample extraction or complete emptying can be installed.

LAB Big Bag Extraction Technology Optimal Amount: 10kg – 500kg per Batch or 2.400 kg a month.

Big Bag Extraction Station with Chain Hoist and Crane Portal

The Big Bag is suspended via a chain hoist attached to the LAB crane portal. A full framework is built over all Big Bag extraction stations, and each station is equipped with its own chain hoist. If the production area has a ceiling height of 5 meters, Big Bags with heights ranging from 0.9m to 2.0m can be used.

The connection to the extraction station is done manually by the operator when a “empty” signal is displayed by the control system at the respective extraction station.

It’s important to note that the chain hoist requires annual maintenance, and employees may need external training to operate it.

Big Bag Extraction Station with Automatic Hydraulic Cylinders

If the use of chain hoists is not feasible or the installation area has lower ceiling heights, the Big Bag Extraction Station with automatic hydraulic cylinders can be used. The Big Bag is hung on a traverse and placed onto the extraction station using a forklift. The hydraulic cylinders lift the traverse after the Big Bag is connected, and the automatic extraction of bulk materials begins.

As the Big Bag empties, the cylinders lift it to empty any remaining materials in the corners. The control system signals when the Big Bag is empty and needs to be replaced.

Advantages

Optional Add-Ons for the Extraction Stations:

Complete Safety Enclosure Around the Extraction Station

The extraction station can be enclosed as a safety component, including sensors. Although all potential pinch points are eliminated by our design, it is possible to enclose the entire station or crane portal for additional safety. This is particularly necessary if the system is installed in an area accessible to visitors, where it cannot be guaranteed that only qualified personnel will access the equipment.

All sides of the extraction station are closed off by the enclosure. If the operator opens the enclosure, the motor and shaking mechanism automatically shut off. Extraction can continue, but at reduced capacity.

Big Bag Closure

For optimal connection of the Big Bag to the extraction station, we offer a Big Bag closure system. This seals the Big Bag completely with a sealing lip, preventing the release of bulk materials. If the supplier changes the Big Bag type or if you switch suppliers and receive a different Big Bag, the Big Bag closure can be replaced as an adapter. The extraction hopper and station remain unchanged.

Vacuum Ring Dust Extraction

During connection to the extraction station, some bulk material and fine dust often escape from the Big Bag. To eliminate this directly during connection, we offer a vacuum ring around the Big Bag closure. This can be connected to either an existing dust extraction system or a LAB dust extraction system.

This significantly reduces dust exposure for operators and the cleaning effort after connecting the Big Bag. If the Big Bag type changes due to a supplier switch, the diameter of the vacuum ring can be adjusted accordingly, similar to the Big Bag closure.

Big Bag Cuff Closure for Reclosing the Big Bag

If the Big Bag needs to be closed again after discharge, we offer a cuff closure.