The Loading Cycle

Material is sucked into the vacuum hopper by using a hand held vacuum wand or feed-bin arrangement. During the loading or ‘convey cycle’ vacuum is drawn on the vacuum hopper lid through a filter, thus drawing the material to be conveyed into the vacuum hopper chamber. Vacuum is present throughout the loading cycle and interrupted only during the unloading cycle. The outlet or ‘discharge-valve’ remains closed during the loading phase.

The Unloading (Discharge) Cycle

Once the hopper is full (controlled by timer) vacuum is relieved and the discharge valve at the base of the vacuum hopper opens. Material then falls by gravity to the receiving container situated below. During the unloading of material ‘discharge cycle’ a reverse jet compressed air blast cleans the filter in the lid of the hopper. An option is available to use a bag shaker mechanism in place of the reverse jet air blast. At the end of the discharge cycle the system automatically resets to continue on with the next convey cycle.