Cyclone - what size to choose?

The size of the cyclone is selected primarily on the basis of the amount of air that flows through it. In our catalog of cyclones (see the appendices on the cyclone pages) the maximum cyclone throughput is given. We recommend selecting a cyclone so that the efficiency of the fan used in the extraction system is about 70% of the maximum throughput of the cyclone - then we obtain good efficiency of separation of sawdust from air with relatively low flow resistance. A smaller air flow causes a decrease in the efficiency of the cyclone, and a larger air flow causes a strong increase in flow resistance.

As a reminder, cyclones work well for coarse or relatively heavy fractions, such as shavings or wet sawdust. The lighter and finer the particles you want to separate, the less effective the cyclone will be. In particular, dust from grinders may be largely uncaptured by the cyclone, regardless of its size and design, in which case appropriate filters should be used.

Often in cases where the proportion of dust in the material being transported is significant, a cyclone with a return spiral is used as the first (coarse) stage of separation, and then a filter station is connected behind the cyclone to catch the remaining fine particles. The air from such a station can be directed back to the production hall, which is particularly beneficial during the heating period.