Originally Posted by compaconmechi

Hello gents,

I have a heating screw (d1600, l10000) and steam inlets from bottom frequently plug (p=2bar).

Does anyone know what to modify on design to avoid pluggings. Material is pulp from paper industry.

Furthermore I have problem with economic mixing of the pulp inside the trough, as diameter is pretty big I don´t get the inner material to the outside, so material is not heated properly.

Links to manufacturers or service workshops would be welcome

br

wene

I would contact the folks at Martin Sprocket and gear and ask them for help with a solution.

I think a lot of the issue is the fact that your flight angle is much to high and should be lowered adding to the number of flights in the auger. ■

It would seem that the steam inlet ports are situated in regions of high product pressure so they may be better located elsewhere. It also may be possible to address the problem of product convection to homogenise the heat distribution by fitting lifting blades to the flights, as it appears likely that the current transfer mode along the conveyor is too coherent. If you care to forward detail drawings to lyn@ajax.co.uk, I will examine the design and see what may be done. ■