DOGMA-120/160/250
The high-performance separator is designed for pre-cleaning (receiving), primary (commercial) and secondary (main) cleaning of cereal, groat and legume seeds, technical and oil crops from light, large and small weed impurities separated by airflow and screens.
Technical specifications
| Model | DOGMA-120 | DOGMA-160 | DOGMA-250 |
|---|---|---|---|
| Nominal capacity per 1 hour of main operating time [t/h], min. | |||
| For pre-cleaning wheat grain with test weight not less than 740 g/l, initial moisture up to 18%, weed impurities up to 10%, including straw impurities up to 1% | 120 | 160 | 250 |
| For primary cleaning wheat grain with test weight not less than 760 g/l, initial moisture up to 16%, impurities up to 10%, including weed impurities up to 3% | 60 | 80 | 120 |
| For secondary cleaning wheat grain with test weight not less than 780 g/l, initial moisture up to 14%, waste up to 5%, including up to 200 dicotyledonous seeds/kg, of which weed seeds up to 100/kg | 30 | 40 | 60 |
| Main parameters and characteristics | |||
| Type | Execution | Execution | Execution |
| Drive | Drive | Drive | Drive |
| Consumed energy | 380 V AC, 50 Hz | 380 V AC, 50 Hz | 380 V AC, 50 Hz |
| Total installed power (excluding aspiration fan), [kW], max. | 3.78 | 3.82 | 3.82 |
| including: screen-box drive | 3.0 | 3.0 | 3.0 |
| receiving-chamber screw drive | 0.75 | 0.75 | 0.75 |
| Lighting | 2×0.018 | 2×0.036 | 2×0.036 |
| Overall dimensions in working position [mm]: length | 3,900 | 4,200 | 4,500 |
| width | 2,700 | 3,160 | 3,160 |
| height | 3,500 | 3,500 | 4,500 |
| Mass with working organs for the main process (excluding fan and aspiration system), [kg], max. | 6,300 | 7,200 | 8,700 |
| Specific electricity consumption for wheat cleaning [kWh/t], max.: pre-cleaning | 0.04 | 0.03 | 0.02 |
| primary cleaning | 0.07 | 0.05 | 0.04 |
| secondary cleaning | 0.15 | 0.10 | 0.07 |
| Number of screen sections [pcs] | 16 | 16 | 24 |
| Upper screen box (receiving) | 8 | 8 | 12 |
| Lower screen box (main) | 8 | 8 | 12 |
| Number of screen tiers in screen boxes [pcs] | 8 | 8 | 12 |
| Upper screen box (receiving) | 4 | 4 | 6 |
| Lower screen box (main) | 4 | 4 | 6 |
| Total screen surface area [m²], max. | 24 | 32 | 48 |
| upper screen box (receiving) | 12 | 16 | 24 |
| lower screen box (main) | 12 | 16 | 24 |
| Screen cloth dimensions [mm]: length | 974+1 | 974+1 | 974+1 |
| width | 1500-3 | 1983-3 | 1983-3 |
| Screen cleaning method | Screen cleaning | Screen cleaning | Screen cleaning |
| Number of aspiration systems | 2 | 2 | 2 |
| Air consumption for aspiration [m³/h], max.: grain and similar products | 12,000 | 15,600 | 23,400 |
| malt cleaning | 8,400 | 11,400 | 17,100 |
Description
Description
The machine separates impurities and defects by aerodynamic properties using the airflow diverted by the aspiration damper and by particle dimensions (thickness and width) using screen decks installed in the screen boxes.
The material is separated into four fractions:
- large and straw impurities
- light impurities (aspiration waste)
- fine impurities and second-grade feed
- clean grain
Advantages
- The largest screen surface area in its class, providing high throughput even when the grain is very wet and contains a high level of impurities.
- A wide choice of screens allows the cell size to be selected individually for any type of cereal or oil crop.
- Reliable operation and long service life: minimal maintenance, robust construction, few wearing parts, simple and convenient access; powder coating.
Design and operation
Grain enters the accumulation hopper of the aspiration system receiving chamber through the inlet and is distributed across the pre-cleaning air channel (channel I) by a vibrating distribution valve. The upward airflow carries light impurities such as dust, chaff and weed heads into the settling chamber of the waste discharge auger, which removes them from the machine.
Uniform distribution across the width is adjusted by moving the vibrating valve weight. Airflow speed in channel I is regulated by the aspiration system dampers.
Grain cleaned of light impurities enters the grain distributor, which divides the flow into 12 equal parts for DOGMA-120 and DOGMA-160 and feeds them to the upper and lower distribution covers of the screen boxes. The covers feed the grain evenly to the receiving screens of each receiving tier, three parts per tier.
Configuration
| Aspiration system for DOGMA-120 with Tsol-12 | |||
| Aspiration system for DOGMA-120 with SK-TsN-44-6 | |||
| Aspiration system for DOGMA-160 with Tsol-15 | |||
| Aspiration system for DOGMA-250 with Tsol-12 |
Process flow diagram
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DOGMA-120/160/250 · Grain cleaning equipment
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