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DH series dry type roller press granulator
Working principle
Raw materials are sent into hopper by quantitative feeder, compactors use the pair of roller with the hole roll, leaving certain gap and rotation with the same speed reversely. Shaft holders of one group of rolls are fixed, and the other one of group can slide to help the hydraulic cylinder press the rolls for abutting closely against each other. Many arc grooves with the same shape and size are arrayed regularly on the roll surface. In accordance with different compressing ratios of target materials, the wave though of arc groove of one roll shall be directed at that of one roll. When two rolls parallel each other horizontally, powder grained materials are, continuously and evenly fed in the gap between two rolls by means of their gravities and through a forced charger from above of two rolls. After entering the nip area, the materials are gradually nipped by the rolls. With continuous rotation of the rolls, the space that the materials occupy reduces gradually and is compressed step by step and reaches the maximum shaping pressure. And then, as the pressure reduces gradually later, pressed blocks drop off the arc grooves of the rolls for recovered elasticity and gravity of the flaking machine and enter a crushing device for crushing and then enter a sieving device for sieving. At last, grained products are obtained. The powder materials and large particles which are substandard will return to bucket elevator and enter into the next process with new products.
Technical Parameters
| Model | DH240 | DH360 | DH450 | DH650 |
| Roller diameter (mm) | φ240 | φ360 | φ450 | φ650 |
| Valid usable width (mm) | 300 | 170-230 | 190-280 | 290-330 |
| Roller speed (rpm) | 50-100 | 10-25 | 10-25 | 10-25 |
| Max rolled sheet thickness(mm) | 4 | 8 | 12 | 16 |
| Rolled sheet output*(kg/h) | / | 1300-2300 | 2500-3500 | 5000-7000 |
| Finished product output (kg/h) |
2000-3000 (Oblate) |
900-1300 | 1800-2500 | 3500-4000 |
| Granular size (mm) | 3.5/4.2/4.5/ 5.5/6.5 etc. |
2-5 | 2-5 | 2-5 |
| Main unit power (KW) | 45 | 30-37 | 55-75 | 90-110 |
| Total installed capacity (KW) | 55 | 55 | 90 | 175 |
| External dimension (mm) | 2300×1700 ×1860 |
2350×2000 ×2600 |
2600×2200 ×2900 |
3600×2800 ×3200 |
| Total weight (t) | 5 | 7 | 10 | 21 |
| Model | DH850 | DH1050 | DH1500 | DH1700 |
| Roller diameter (mm) | φ850 | φ1050 | φ1500 | φ1700 |
| Valid usable width (mm) | 420 | 500 | 650 | 650 |
| Roller speed (rpm) | 9-16 | 8.5-14.5 | 6-13 | 5-12 |
| Max rolled sheet thickness(mm) | 25 | 36 | 36 | 46 |
| Rolled sheet output*(kg/h) | 12,000-16,000 | 22,000- 38,000 |
32,000- 100,000 |
50,000- 1,600,000 |
| Finished product output (kg/h) |
6,000-8,000 | 12,000- 16,000 |
15,000- 50,000 |
28,000- 80,000 |
| Granular size (mm) | 2-5 | 2-5 | 2-5 | 2-5 |
| Main unit power (KW) | 220-250 | 400 | 400×2 | 560×2 |
| Total installed capacity (KW) | 400 | 850 | 1,500-1,800 | 2,000-3,000 |
| External dimension (mm) | 5,000×3,800 ×4,100 |
7,000×5,000 ×6,000 |
9,700× 5,600 ×7,700 |
10,500× 6,000 ×8,100 |
| Total weight (t) | 46 | 75-85 | 120-150 | 200-220 |
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