Vacuum rake dryer, has simple structure, convenient operation, use cycle is long, stable and reliable performance, the steam consumption of small, high applicability, product quality is good, especially suitable for high temperature, flammable easy oxidation, high temperature dry paste material, it is proved by the user long-term use, good drying equipment. Principle: being dry material from joining shell above middle, in the positive and negative rotating stirring rake teeth, axial moving back and forth, material contact with shell inner wall surface of constantly updated, indirectly heated by steam, tine of even mixing, grinding rods, make the moisture inside the material gasification, in under the action of vacuum system, make the dry material internal water and surface water more favourable eduction, vaporization of water dry dust collector, wet type dust collector, condenser, from the vacuum pump outlet vent. Material slurry paste paste below 100 mesh material apply to all kinds of pigment, filter and centrifuge filtering NiTou materials and soda ash detergent, alkali starch, dyestuff pigment, clay grey clay under appropriate conditions, such as cement, such as synthetic fiber, below 100 mesh material solution crystallization vacuum liquid, emulsion, the piece, such as ore slurry
