Triple-pass Rotary Drum Dryer Introduction
Triple pass rotary drum dryer, also known as three drum dryer, differs in structure from a single pass drum dryer. It consists of three drums of varying diameters nested together, forming three drying chambers: an inner layer, a middle layer, and an outer layer. Unlike single pass drum dryers, triple pass dryers do not require to be set on a sloped base or rely on gravity to move materials. Instead, they rely on pneumatic conveying within the drums to loosen materials to specified positions. The notable advantages of a triple pass drum dryer include shorter drum length, smaller size, lighter weight, space-saving, flexible temperature control, and versatility, making it suitable for drying various high-moisture materials such as sand, biomass, and more.
Material Mastery
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Wood pellet
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Chipper
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Shaving
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Sawdust
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Straw
Triple-pass Rotary Drum Dryer Gallery
Triple-pass Rotary Drum Dryer Features
A triple pass rotary dryer is a modification of the single pass dryer, where instead of a single drum, three drums are nested together to reduce the overall size of the dryer. During operation, the material and hot airflow sequentially pass through the inner to outer drums. Then, they undergo a zigzag flow pattern within the dryer body, effectively utilizing heat energy to dry the material before being discharged.
The drum of the triple pass dryer is composed of three coaxially arranged inner, middle, and outer drums, making full use of the space within the drum cross-section. Overall, the length of the drum body is approximately 30-35% of that of a single-pass drum dryer, significantly reducing the footprint and factory building area.
The support device of the three drum dryer combines the wheel belt on the outer drum with the support roller, driven directly by the motor. The rotation of the drum is achieved through friction between the support roller and the wheel belt. The overall structure is compact, rational, and simple, featuring an axially split design for easy inspection and replacement of worn parts, secured with bolt connections.
The triple pass rotary drum dryer is capable of drying block materials, granular materials, and powdery materials below 20-40mm. The drum is made of wear-resistant manganese plate, which is 3-4 times more durable than ordinary steel plate, effectively extending the service life of the dryer.
Triple-pass Rotary Drum Dryer Technical Specifications
| Model | Capacity(t/h) | Power(kw) | Blower power(w) | Burner | Combustion chamber | Thickness of drum steel plate(mm) | Dustcollector |
| DB-T1230 | 1-3 | 3 | 5.5 | RS30 | 600*1000 | 6 | 600 |
| DB-T1530 | 3-5 | 3*2 | 7.5 | RS60 | 600*1000 | 6 | 600 |
| DB-T1840 | 5-8 | 5.5*2 | 11 | RS90 | 800*1500 | 8 | 800 |
| DB-T2045 | 10-15 | 7.5*2 | 15 | RS120 | 1000*1500 | 8 | 1000 |
| DB-T2255 | 15-20 | 11*2 | 18.5 | RS180 | 1000*1500 | 10 | 1200 |
| DB-T2560 | 20-30 | 7.5*4 | 20-30 | RS240 | 1200*1800 | 12 | 1500 |
| DB-T2860 | 30-40 | 11*4 | 30-45 | RS360 | 1200*2000 | 14 | 1500 |
| DB-T3080 | 40-50 | 15*4 | 45-75 | RS480 | 1500*2000 | 16 | 1800 |
Note: Technical specifications may change without notice due to ongoing technological advancements.
