Drying Cells; Exhaust Air Cases And Exhaust Air Aspirators; Feeding Apparatus - Mepu K-SERIES Operating Manual

4.5 Drying cells

The drying cells have many air ducts. The drying process is uniform, because air is
blown into the central channel between the drying cells, from where moist air is
discharged through the drying cells towards the sides into the exhaust air cases. In the
rear part of the central channel there is a cleaning/ inspection hatch. There are shutters
preventing air flow installed between the cells for drying of partial batches.

4.6 Exhaust air cases and exhaust air aspirators

The task of the exhaust air cases is to collect the humid air from the drying cells, which
is then lead through the exhaust channels towards the sides of the dryer. One of the
exhaust channels features a thermostat that measures the exhaust air temperature. The
digital display of the thermostat is located in the electrical switchboard.
The exhaust air aspirators for the exhaust air cases are available as optional equipment.
The aspirators serve to reduce condensation of moisture in the exhaust air cases. The
aspirators also improve ventilation inside the dryer.

4.7 Feeding apparatus

During the drying process grain flows from the rotating feed rollers evenly down into
the conical base. There are six speed rollers in the dryer. At both ends of the feeding
apparatus there are movable hatches for cleaning the feed rollers.
The volume of the feeding apparatus is 0.81 cubic metres. The shafts feature with ball
bearings at each ends, and a nylon sliding contact bearing at the centre. There is a
hatch underneath each feed roller, which is opened when the dryer is unloaded.
The five blade feed roller functions smoothly, even when the grain humidity is high,
and the feed rate stays uniform in terms of volume throughout the entire drying
process, regardless of the moisture content of grain. However, it is important to note
that the flow increases in terms of weight towards the end of the drying process as the
grain size is reduced.
The steep-angled feed troughs ensure even drying process and reliable circulation
under any circumstances. The structure of the feeding apparatus is very tight, allowing
to dry even small seeds (such as turnip rape).
The feeding apparatus features a bottom hatch shut-off mechanism to open and close
the bottom hatches. The opening mechanism is operated either with a cam.
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