Hot pipe type three-barrel vacuum drier

Abstract

The invention discloses a hot pipe type three-barrel vacuum drier. The hot pipe type three-barrel vacuum drier comprises a hot pipe type three-barrel drying chamber, an air guide tube, brackets, a vacuum unit, a heating device, a driving device, a vacuum feeding-discharging device and a moving device, wherein the vacuum feeding-discharging device is supported and fixed through the brackets; two to five groups of roller paths and 1 to 2 groups of gear rings are arranged on the outer shell of the hot pipe type three-barrel drying chamber; carrier roller brackets comprise the brackets and carrier rollers; a transmission gear on a transmission of the driving device occludes with racks of the gear rings on the outer shell; the heating device directly heats the outer shell of the hot pipe type three-barrel drying chamber; and the air guide tube penetrates through the vacuum feeding-discharging device of the hot pipe type three-barrel drying chamber to be connected with the vacuum unit. According to the hot pipe type three-barrel vacuum drier, the structure is compact, the construction is simple, the layout is reasonable, the heat exchange rate of materials and heat energy is increased, heat energy of the heating device heats the materials, conducts heat to the materials, and dissipates heat of the materials through a heat-conducting medium, the thermal conversion efficiency is high, the loss is low, the materials can be continuously dried under a vacuum and low temperature environment, the material drying efficiency is improved, the material drying effect is optimized, and the hot pipe type three-barrel vacuum drier performs eco-friendly drying, and is energy-saving and environment-friendly.

Description

technical field [0001] The invention relates to a vacuum dryer, in particular to a heat pipe type three-cylinder vacuum dryer. Background technique [0002] Vacuum drying equipment for materials such as grain, chemical products, coal, gravel, sand, mineral products, pasture, crops, and local specialties on the market. The material vacuum drying equipment performs vacuum low-temperature drying on materials under negative pressure and vacuum state, which solves the problem of The hot air temperature is high, and the quality of the material is poor after drying; the heating of the vacuum drying of the material on the market now is to dissipate heat through metal exhaust pipes placed in parallel, the heat conduction and heat dissipation efficiency is low, the exhaust efficiency is low, and the vacuum degree is not well controlled. As the water vaporization temperature rises, the heat energy required for drying will increase a lot, and the waste heat will not be utilized; the dri...

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Problems solved by technology

[0002] Vacuum drying equipment for materials such as grain, chemical products, coal, gravel, sand, mineral products, pasture, crops, and local specialties on the market. The material vacuum drying equipment performs vacuum low-temperature drying on materials under negative pressure and vacuum state, which solves the problem of The hot air temperature is high, and the quality of the material is poor after drying; the heating of the vacuum drying of the material on the market now is to dissipate heat through metal exhaust pipes placed in parallel, the heat conduction and heat dissipation efficiency is low, the exhaust efficiency is low, and the vacuum degree is not well controlled. As the water vaporization temperature rises, the heat energy required for drying will increase a lot, and the waste heat will not be utilized; the dried material has dead angles, and the material is easy to form agglomerates, which affects the uneven drying moisture of the material.

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