Works hollow shaft lined with dense wedge hollow blades, axial flow through the heating medium through the hollow blades. The effective heat transfer area per unit volume is large, the heat medium temperature from -40 ℃ to 320 ℃, may be water vapor, or liquids type: such as hot water, oil and so on. Indirect conduction heating, air does not carry away the heat, the heat was used to heat the material. Insulation heat loss to the environment only by body heat. Wedge-shaped blade heat transfer surface has a self-cleaning function. Particles and relative motion wedge surfaces produce wash effect, can wash away the wedge surface material attachments, making operation has maintained a clean heat transfer surfaces. Paddle dryer housing for Ω type, arranged in the housing generally two to four hollow agitator shaft. The housing seal cover and the cover to prevent dust escaping materials fully play its role. Heat transfer medium through the rotary joint flows through the housing jacket and hollow stirring shaft, stirring hollow shaft according to the type of the heat medium has a different internal structure, to ensure optimum heat transfer. Features ◎ blade dryer is low energy consumption: As indirect heating, not a lot of air to carry away the heat, but also to set the dryer wall insulation, for slurries, just 1.2kg 1kg of water evaporation of water vapor. ◎ blade dryer system costs low: with great heat transfer surface per unit effective volume, to shorten the processing time, the device size becomes smaller. Would greatly reduce the floor area and building space. ◎ handle a wide range of materials: the use of different heat medium, can deal with heat-sensitive materials, but also need to deal with the high temperature treatment of the material. Common media are: water vapor, oil, hot water, cooling water. Continuous operation can also be an intermittent operation, can be applied in many fields. ◎ environmental pollution: Do not use portable air entrained dust material rarely. Material solvent evaporation is very small, easy to handle. For contaminated materials to be recovered or solvent conditions, can be closed loop. ◎ operating costs low: the structure. A small amount of wear, maintenance costs low. ◎ operating stability: As special compression wedge blades - swelling stirring to make full contact with the material particles heat transfer surface in the axial zone, the temperature of the material, humidity, mixing gradient is very small, thus ensuring the process stability. 

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