Single cone heat pipe spiral dryer

Abstract

A single-cone heat pipe type spiral dryer of the present invention is composed of a vacuum unit, a driving device, a feed valve, a discharge valve, a screw shaft, a bracket, a heat pipe radiator, a conduit, and a hemispherical top cover. The heat pipe radiator is fixedly supported by the bracket. The upper end of the heat pipe radiator is covered and closed by a hemispherical top cover. The lower end of the heat pipe radiator is equipped with a discharge valve, and the space forms a drying chamber; the pipe is installed in the center of the heat pipe radiator. There is a screw shaft in the conduit, and a vacuum unit, a driving device, and a feed valve are arranged on the top of the hemispherical top cover. The single-cone heat pipe spiral dryer can realize continuous stirring, shorten the drying time, make the drying quality of the product uniform, improve the drying efficiency and optimize the drying effect; the heat pipe radiator directly heats, conducts heat, and dissipates heat, with high heat conversion efficiency and low loss. The drying temperature can be set at 35-300°C; in the same size space, the heat dissipation area is increased by 3-15 times, the heat conduction and heat dissipation speed is expanded, and the total heat transfer of drying is improved; green drying, energy saving and environmental protection.

Description

technical field [0001] The invention relates to a vacuum drying device, in particular to a single-cone heat pipe type spiral dryer. Background technique [0002] At present, the single-cone and double-cone vacuum drying systems commonly used at home and abroad work by introducing thermal energy (such as hot water, steam, heat transfer oil) into the jacket, and the heat is transferred to the material to be dried through the inner shell; The working process of the vacuum dryer is a batch operation. After the wet material enters the silo, it is heated by the jacket to dry it; the material is in a vacuum state, and the air pressure drops so that the water (solvent) on the surface of the material can evaporate quickly, and the vacuum unit promptly Discharge and recovery, so as to achieve the purpose of drying. [0003] Heat transfer is realized through heat conduction, heat convection and heat radiation. The interlayer heating in a vacuum state, because there is not enough air a...

AI Technical Summary

Problems solved by technology

[0003] Heat transfer is realized through three ways of heat conduction, heat convection and heat radiation. The interlayer heating in a vacuum state, because there is not enough air and liquid to convect heat transfer, the heat transfer effect of heat conduction and heat radiation in a vacuum state will be better. Good; most of the single-cone vacuum dryers and double-cone vacuum dryers on the market now use external interlayer heating for heat dissipation and heating, but their radiators are large in size, small in heat dissipation area, smaller in contact with the material, and low in efficiency of heat energy use; The heat energy (such as hot water, steam, heat transfer oil) in the jacket also needs power to drive the flow, resulting in energy waste

Images