Different construction types allow an exact adaptation of the machine to customer needs and objectives:
Single or double deck LIWELL® screening machine of Type LF
This is the standard machine for general applications that has well proven effective and reliable for many years.
Two screen cases are brought into forced, counteracting linear movement over an eccentric shaft
Cross bars alternately fixed to the inner and outer screen cases permanently change in this way their distance to each other
Flexible screen mats attached to the cross beams are loosened, tensioned and stretched through the distance change.
This simple and robust machine construction sees only small acceleration forces (2-3 g) during operation. Machine components have long service lives as a result.
Hein, Lehmann can build LF series machines with a single or double screening deck with screen areas from 1.25 m2 to 27 m2 per deck.
We will customize the individual structuring of the machine in order to meet our customers’ requirements.
The LF model has optional and additional dust protection provisions available
Customers can choose machine colour according to their branding requirements
Different screen mat lengths provide better customization
Side sealing of the screen mats in case of fine separations or in conjunction with washing
Optional wear-protection precautions through rubber coatings or utilization of HARDOX plates and ceramics are available
Mobile or semi-mobile constructions for more flexibility
LIWELL® Type LL screening machines with dust protection
The function of the LIWELL® LL is identical with that of the LF series; the special design allows for dust tight sealing. A dust extraction unit can be added.
Hein, Lehmann can build LL series machines with a single or double screening deck with screen areas from 1.25 m2 to 27 m2 per deck.
Protection deck LIWELL® screening machine of Type KT (patented)
The Flip-Flow action is superimposed by an adjustable circular vibration. Through the integration of circular vibration and Flip-Flow screening, it is
possible to classify coarse bulk materials. The upper deck of the LIWELL® KT type operates as a circular vibratory unit and serves as a protection deck.
On the lower deck, the LIWELL® Flip-Flow action executes the fine separation.
As with the Liwell® Type LF, Hein Lehmann can provide dust protection options, U-Mats, wear protection and mobile or semi-mobile construction options.
This execution of the LIWELL® provides for a wider scope of application. Depending on the specific requirements of the application, Hein, Lehmann can equip
the protection deck (upper deck) with any types of screen panel. On the lower deck, the well-proven LIWELL® screen mats provide effective fine screening.
The KT series is built either as a single deck and single deck with pre screening deck, with areas from 3 m2 to 16 m2 per deck.
On the Liwell® KT Hein Lehmann can provide dust protection, U-Mats, wear protection and mobile or semi-mobile construction as options.