High Quality Lifting Machine, Vacuum Harrow Dryer, Conical Vacuum Dryer Suppliers in China

Home > Products > Food Dryer > Hollow Blade Dryer used in chemical

Hollow Blade Dryer used in chemical

Basic Info

Model No.: QJ

Product Description

QJ Hollow Blade Dryer

Applicable for drying or cooling of paste, particle, powder and slurry state of material, perform the process of drying, cooling, heating, sterilizing, reacting and combustion under low temperature. The special stirring and heating transferring blade, makes high heat transferring efficiency, and provide self-cleaning function. The special chock shaped stirring and heat transferring blade has high heating efficiency and self-cleaning function of the heating transferring surface.

Hollow chock shaped blades are concentrated on the hollow shaft. Heat media flow through the blade from the hollow shaft. The heat transferring area in the effective volume is very high. The temperature range of heating media is -40 °C to 320 °C . It might be steam, or liquid state, such as steam, thermal oil etc. Indirect heating, there's no heat carried out by air. All heat is utilized for to drying the material except the lost of heat insulation layers. The surface of chock shaped blade has self-cleaning function. The relative movements of the product particles and the chocked shaped surface might clean the material attached to the chock shaped surface, so to keep the cleanliness of heat transferring surface during working. The shell of hollow blade dryer is Ω shape. 2 or 4 pieces of hollow stirring shaft are usually equipped in the shell. To avoid any leakage of material, there're sealed terminal cover and top cover with the shell. The heat transferring media flow through the rotation connector, jacket's shell and hollow stirring shaft. To ensure best transferring effect, the hollow stirring shaft adopts different interior structure in accordance with different heating media.

1. The heat consumption of blade is low: No heat carried out by the air because of indirect heating; there's no heat insulation layer with the exterior wall of the dryer. It consumes 1.2 kg of steam to evaporate 1kg of water for to drying slurry state of material.

2. The cost of the blade dryer is low: The unit effective volume has very large heat transferring surface, so the processing time is shorted, the size of the equipment becomes small. The building area and place are sharply decreased.

3. The range of material to be processed is wide: Heat sensitive material and the materials to be processed under high temperature might be processed with different heating media. The normal media are: steam, thermal oil, hot water and chill water. It might be continuous or batch operation, widely used in many areas.

4. The pollution is less: Without any carrying air, very few powder is carried out. The solvent evaporated is very few, it easy to be processed. For the material that might cause pollution or the solvent to be recovered, it might adopt sealed circulation.

5. The operation cost is low: 1hour/day.operator is enough for normal operation. Low stirring speed and reasonable structure, the worn amount is few, and the maintenance fee is low.

6. Steady operation: The material particles fully contact heat transferring surface, because of the special compressing and swell-stirring effect of the chock shaped blade. The difference of the temperature, humidity and mixing effect are very small in the different axial area, so to ensure the stability of process.


The blade dryer is successfully applied in foodstuff, chemical, petrochemical, dyestuff, and industrial mud etc. The heating transferring, cooling and stirring characters enable it to perform the following unit operation: combustion (low temperature), cooling, drying (recovery of solvent), heating (melting), reacting and sterilizing. The stirring blade is heat transferring surface too, so to increase heat transferring area of unit effective volume is increased, and decrease processing time. The chock shaped heat transferring surface has self-cleaning function. Compressing and swell-stirring functions make the material mixed uniformly.    
spec\item QJ3 QJ9 QJ13 QJ18 QJ29 QJ41 QJ52 QJ68 QJ81 QJ95 QJ110
Heat transferring 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 rotating 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 5.5 7.5 11 15 30 45 55 75 95
width of vessel mm 306 584 762 940 1118 1296 1474 1652 1828 2032 2210
total width mm 736 841 1066 1320 1474 1676 1854 2134 1186 2438 2668
length of vessel mm 1956 2820 3048 3328 4114 4724 5258 5842 6020 6124 6122
total length mm 2972 4876 5486 5918 6808 7570 8306 9296 9678 9704 9880
distance of material inlet & outlet mm 1752 2540 2768 3048 3810 4420 4954 5384 5562 5664 5664
height of center mm 380 380 534 610 762 915 1066 1220 1220 1220 1220
total height mm 762 838 1092 1270 1524 1778 2032 2362 2464 2566 2668
steam inlet “N” (inch) 3/4 3/4 1 1 1 1 11/2 11/2 11/2 11/2 2
water outlet "o" (inch) 3/4 3/4 1 1 1 1 11/2 11/2 11/2 11/2 2

Contact us if you need more details on Hollow Blade Dryer. We are ready to answer your questions on packaging, logistics, certification or any other aspects about Blade Dryer、Drying Machine. If these products fail to match your need, please contact us and we would like to provide relevant information.

Product Categories : Food Dryer

Email to this supplier
  • *Subject:
  • To:

  • *Messages:
    Your message must be between 20-8000 characters