The bigbag discharge unit feeds into the vacuum string via a rotary valve. Alternatively, in many cases, if a more accurate dosing is desired, a screw would be used.
The bigbag discharger is equipped with a rubber diaphragm (in this case of EPDM-rubber as the customer was a food producer). Through this diaphragm the bigbag’s nozzle ends tightly, thereby avoiding dust emission into the room. Moreover, it is cheaper to produce than a stainless-steel plate.
The small component weight is placed at the far left of the platform and is used for the components that are delivered in bags and only make up a small fraction of the batch. This is a unique solution, developed by TEKFA and sold all over the world. In this sanitary solution it is equipped with special nylon bearings. Nylon does not rust and therefore there is no risk of contamination.
The tipping unit is designed so that cleaning can be done all the way around when cleaning on the inside. The disadvantage is of course, that the tipping unit thereby is dimensioned a little smaller than one would do under other circumstances.
The cyclones at the far right was also customized. Usually the filter is placed at the top of a cyclone. A regular filter flush with compressed air, i.e. the powder from the filter is flushed off at the top and falls down into the bottom of the cyclone). With this customer, who produces baby food, there could be no risk of filter residue entering the material. Therefore, the filter is placed at the far left, from which there are discharge to a bigbag.
The facility has, of course, also got a control unit, which is not shown in the drawing. Tekfa provided both control and the last important component: software.
