Destoner (Stone Separator)
The destoner is designed to clean grain from mineral impurities using a dry method. It is used for operation in a set with other types of equipment at grain processing plants.
| Installed drive power (without fan), kW | 0,12 |
|---|---|
| Productivity per hour of clean work (wheat cleaning), t/hour | 6-9 |
| Working area of the deck, m2 | 0,38 |
| Deck angle, degrees | 5-10 |
| Air consumption, no more than, m3/hour | 1850 |
| Vacuum in the working chamber for an unloaded machine, mm H2O | 75 |
| Number of revolutions of the vibrator shaft, rpm | 940 |
| Service life, not less than, years | 13 |
| Overall dimensions mm, not more than: | |
| Length | 1500 |
| Width | 750 |
| Height | 1000 |
| Weight of the machine in full assembly, kg | 141 |
Additional information
The destoner consists of the following components: a frame, a deck, a vibratory drive, a mechanism for adjusting the deck’s inclination angle, an airflow regulator, a feeder, and a housing.
The technological process of cleaning from mineral impurities operates as follows:
Grain enters the mesh surface of the deck through the feeder and distributor. Under the influence of an upward airflow and the oscillatory movements of the deck at an angle to the horizontal plane, particles with a higher specific gravity (referred to as "heavy" particles) settle on the deck surface, while particles with a lower specific gravity ("light" particles) float upward. This causes the material to stratify, with the density of the lower layers being higher than that of the upper layers.
For stone flour production, the mills combine roller mills and stone mills. Roller mills are used in the break systems, while stone mills are installed in the reduction systems. A bypass system allows quick switching between traditional bakery flour milling and whole grain (or gluten-free) milling.
The lower layer of material has significant adhesion to the working surface due to friction and inertial forces, moving toward the raised edge of the deck. The upper layer of material, having minimal contact with the underlying layers, flows toward the lowered edge of the deck under the force of gravity.