Characteristics of dual axis blade dryer

Characteristics of dual axis blade dryerIt is a low-speed stirring dryer with conduction heating. A jacket is installed on the dryer cylinder, and a hollow blade is installed on the hollow shaft. A heat carrier is introduced into it, and the wet material undergoes sufficient heat exchange between the cylinder and the blade surface under the stirring of the stirring blade, in order to achieve the drying purpose. The structural form is generally horizontal, double axis or four axis. The blade has self-cleaning ability, which can improve the heat transfer effect of the blade. The dispersing force generated by the combined motion of the inclined surface of the rotating blade and the particle or powder layer automatically removes the sludge attached to the heating slope, and the blade maintains efficient heat transfer function.

Characteristics of dual axis blade dryerRelative meshing rotation, the special blade structure ensures that the heat exchange surfaces on both sides of the hollow blade are in full contact with the material, causing the material to be squeezed and relaxed between the blade shafts. The heat exchange surface has self-cleaning function, and the relative motion between the material particles and the hollow stirring blade surface produces a washing effect, which can wash away the material attached to the blade surface and keep the rotating shaft clean during operation.

Main features:

1. The thermal efficiency is as high as 80-90%. The heat transfer coefficient K is 100-300 Kcai/h.m2 ℃, and the evaporation rate is 10-30 Kcai/h.m2.

2. Can be operated continuously or intermittently; It can be dried under normal pressure, vacuum dried for thermosensitive materials, heated for evaporation, or cooled for crystallization; Can be used as a pre drying for secondary drying. The solvent can be recovered during the drying process.

3. The carriers are diversified, mainly including thermal oil, steam, water, hot air, coolant, etc.

4. The blade structure is special and has a large heating area. Small unit volume and small footprint.

5. Within a unit volume, the heating area is large. Small unit volume and small footprint.

6. Wide applicability: regardless of organic or inorganic substances; Granular materials, viscous materials, and materials with high or low moisture content can all be dried.

According to the different heat exchange media, there are two types: steam (saturated steam or superheated steam) type and liquid (hot water, heat transfer oil, heat medium, refrigerant, softened cold water or chilled water) type. They can be operated continuously or intermittently, and the heat exchange medium (steam, heat transfer oil or water) is always separated from the product. According to the number of rotating axes, it is divided into single axis, double axis, and four axis propeller blades. According to different operating pressures, it is divided into vacuum, atmospheric pressure, and positive pressure types.