Simplified Handling of Bulk Materials from Big Bags

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DÜPERTHAL Sicherheitstechnik GmbH & Co. KG

This system is especially designed for ergonomic feeding of bagged materials into the closed, automated feeding systems. Moreover, added functionality is ensured as sacks and big bags can be fed.

Feeding from Big Bags

Big bags are hung on mobile hoists and taken to the combined pick-up station where the outlet of the bag is put over the inlet pipe and clamped down. Then, the tie-up string is opened and the discharge begins. Alternatively, the big bag can also be put on a loading table and connected as described above. The system can be coupled with an additional vibration unit or massager for difficult-to-discharge bulk products. Furthermore, the system can be coupled with a low-level indicator in order to make a timely big bag change possible.

Feeding from Sacks

To empty the sack, the system uses a vacuum aspiration method. The vacuum aspiration starts by opening the cover of the sack tipping hopper. The sack is then opened and the product is discharged into the hopper. The dust is extracted and filtered in an appropriately dimensioned filter.

Big Bag Connection System with Vacuum Docking

This system delivers dust-free docking of bags and ensures reliable discharge of freeflowing bulk solids. It is particularly suitable for big bags that have a short or no outlet sleeve. The big bag being discharged is lifted with hoisting gear and lowered onto the discharge station until it comes into contact with the vacuum docking system. This system generally consists of a cylindrical housing around the top edge.

This, furthermore, features a circumferential vacuum channel that is open at the top. The spacer grating covers the top opening and an underpressure generator is connected on the underside of the vacuum channel. As soon as the big bag is placed on the spacer grating, the under-pressure generator creates a vacuum to form a temporary, dust-tight connection between the underside of the big bag and the docking system. This new solution has been registered as a utility model at the German Patent Office.

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