Feeding of gravimetric dosing systems above two compound extruders.

The difficult-flowing bulk materials are conveyed into the feed hoppers of the gravimetric multi-component dosing stations using spiral conveyors.
The free-flowing bulk materials are conveyed upward using vacuum conveyors.

The entire frame is mounted on a base frame with four load cells. In this case, dosing alternates between two blower conveying systems.

To assist with Big-Bag discharge, the Big-Bag collection tray, equipped with a vibration motor, is mounted on four rubber buffers within the frame. The vibration motor is controlled via an empty sensor in the lower product retention hopper.

A lump breaker is also located inside the product retention hopper.

Either self-milled powder from a customer-provided impact disc mill or purchased PE powder from Big-Bags is conveyed into two buffer silos located in the adjacent hall using flexible spiral conveyors.

The full Big-Bag is suspended in the frame using a forklift.

The upper frame consists of a tube-in-tube system with springs, which acts as a tensioning device to tighten the Big-Bag. As the Big-Bag empties or becomes lighter, the Big-Bag lifting cross is raised by spring pressure, tightening the Big-Bag at the four corners.

Completely made of stainless steel.

Walkable platforms for opening the Big-Bag discharge nozzles.

Equipped with a Type DZR discharge and dosing system.

Powdered activated carbon is dosed into a dissolving tank via a flexible spiral conveyor.

Plastic granulate freely flows by gravity either from the left or right Big-Bag into a sack loading hopper below.

The customer has installed a suction box for existing vacuum conveyors beneath the loading hopper.

The height adjustment of the upper frames is limited by the sack loading hopper below.
Therefore, additional height-adjustable chains were provided for suspending Big-Bags of varying sizes.

Due to space constraints, neither a docking device nor a closed housing for opening the Big-Bag discharge nozzle could be used.
As a solution, a system was designed to extract the dust generated during unloading, using either central extraction or a dedicated filter extraction system.

Big-Bag collection tray with cross-slitting knives for cutting open Big-Bags with closed bottoms WITHOUT discharge nozzles.