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Rotary dryers

Paddle Dryer

【Production capacity】: 2 to 3 t/h
Moisture content】: 80% to 20%
【Applications】: lade dryer has been successfully applied to food, chemical industry, petrifaction, dyestuff and industrial sludge. 


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1. Less energy consumed: owing to indirect heating, there in no much heat brought out by air. Insulation layer is set on the outer wall. For slurry materials, only 1.2-kg water steam is need to evaporate 1-kg water;
2. Less cost of drying system: large heat transfer surface is held in unit effective volume, which will reduce disposal time and size of equipment. thus, construction area and space are greatly reduced;
3. Wide application range: adopt various hot media; can not only dispose thermal sensitive materials, but also can dispose materials which need high temperature; common media: steam, heat conduction oil, hot water and cooling water. It can be operated both constantly and discontinuously. It can be applied to many fields.
4. Less pollution: no use of carried air; less powder dust carried; less evaporation amount of material solvent; easy to dispose; for materials with pollution and situations where solvent needs to be recycled, closed circuit can be adopted.
5. Low operation cost: low maintenance cost; less abrasion loss;
6. Stable operation: Due to the special compression of the wedge type pulp, the expansion stirring effect, the material particles are in contact with the heat transfer surface, the temperature and humidity of the material in the axial section, the gradient of the mixing degree is very small. Thus, the stability of the process is ensured. 


It is a kind of indirect heat exchange equipment with compact structure and high thermal efficiency. It is mainly composed of upper cap, rotary shaft, shell body (with jacket), bracket and diving device. As core part of this equipment, rotary shaft is composed of hollow blades and hollow shaft with special flow passage. Main equipment is installed horizontally or obliquely. Materials enter from fore end. There is a small angle among shell body, rotary shaft and horizontal level. Relying on rotation of rotary shaft and self gravity, products move toward discharge end and flow to next process through flow overflow port. Through heat or cooling media in hollow blades, hollow shaft and body shell jacket, heat is transferred indirectly to materials and drying purpose is fulfilled.
Paddle dryer is mainly applied to drying, reacting, cooling, crystallizing, evaporation, heating disinfection and low temperature calcination. It is applied to drying organic materials, inorganic materials and thermal sensitive materials in vacuum state. This machine can realize multiple uses.
According to different heat exchange media, paddle dryer can be divided into steam type (saturated steam and super hot steam) and liquid type (hot water, heat conduction oil, hot coal, cold coal, soften cold water and chilled water). It can be operated both constantly and intermittently. Heat exchange media (steam, heat conduction oil and water) separates with products all the time. Paddle dryer can be divided into single shaft, double shaft and four-axis shaft according to the number of shaft. According to different operation pressure, it can be divided into vacuum, normal pressure and positive pressure type.
Paddle dryer shaft rotates in relative mesh. Special leaf structure ensures the hollow blade on both sides of the change and the heat surface of material full contact, so that the materials in the blade shaft are extruded and relaxed effectively. Heat transfer surface combines with self-cleaning function. Material particles and hollow stirring blade surface of the relative movement of washing wash away the leaves attached to the surface of the material. Rotating shaft in operation has maintained a clean heat transfer surface. 

Technical Parameters:
Model JYG3 JYG9 JYG13 JYG18 JYG29 JYG41 JYG52 JYG68 JYG81 JYG95 JYG110
Heat transfer area(m2) 3 9 13 18 29 41 52 68 81 95 110
Effective volume(m3) 0.06 0.32 0.59 1.09 1.85 2.8 3.96 5.21 6.43 8.07 9.46
Range of rotary speed(r/m/p) 15-30 10-25 10-25 10-20 10-20 10-20 10-20 10-20 5-15 5-15 5-10
Power(kw) 2.2 4 5.5 7.5 11 15 30 45 55 75 95
Width of body A(mm) 306 584 762 940 1118 1296 1476 1652 1828 2032 2210
Total width B(mm) 736 841 1066 1320 1474 1676 1854 2134 1186 2438 2668
Width of body C(mm) 1956 2820 3048 3328 4114 4724 5258 5842 6020 6124 6122
Length of body D(mm) 2972 4876 5486 5918 6808 7570 8306 9296 9678 9704 9880
Distance of feeding and discharging E(mm) 1752 2540 2768 3048 3810 4420 4954 5384 5562 5664 5664
Center height F(mm) 380 380 534 610 762 915 1066 1220 1220 1220 1220
Total height H(mm) 762 838 1092 1270 1524 1778 2032 2362 2464 2566 2668
Air inlet (inch) 3/4 3/4 1 1 1 1 11/2 11/2 11/2 11/2 2
Water outlet (inch) 3/4 3/4 1 1 1 1 11/2 11/2 11/2 11/2 2
Note: No further notice if the technical parameters change.

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