The loading of a storage by an overhead

conveyor + tripper can be carried out as a

fully automatic process.

The only problem is how to find not expensive

and reliable probes.

In our port potash storages,where RH is

about 85-90%, the potash dust getting sticky

and all known types of probes, we tried,

were damaged very soon.

So, we developed self-made solution.

The travel distance of the tripper was divided

on number of "stations"- 3m between them.

On each station was installed "oar" hinged to

the catwalk. The growing pile pushed the oar

outside and its upper part (above the hinge)

approaching the non-contact "go-switch".

The tripper starts to travel "looking for" another

empty station and continues to load all the time.

When all stations are filled up, the last oar

stops the conveyor automatically.

The system is many years in use and it is

maintenance-free !

Michael Rivkin ■