Abrasive refill bunker

One of the foundations for a reproducible blasting result is a constant operating mixture of abrasive grains of different sizes with optimal grain size distribution between the neukorn size and the separating grain size set in the separator.

With many blasting systems, the refilling of abrasive is not always carried out manually and, depending on the operator, quite regularly, so that refilling is often only carried out when not all blasting turbines are supplied with abrasive.

This in turn leads to a very fine mixture before refilling and to a much too coarse mixture without medium grain sizes after filling and thus to different workpiece surfaces.

This is all the more obvious if these parts belong to a single delivery batch, in which apparently identical parts have been processed unequally, which is then difficult to justify to the customer.

The bunker with underbuilt abrasive dosing device exists in two variants:

The scope of equipment includes both a abrasive probe for detecting the minimum level of the refill bunker, as well as one for detecting the maximum level at the main abrasive storage bunker.

In the event of a defect in the probe from the main bunker, the PLC control system ensures that abrasive is automatically fed into the circuit until the required level is reached again. As a result, a constant grain fraction of the resulting operating mixture is achieved.

In the event of a lack of abrasive in the refill bunker, a light signal is triggered.