Heating plate of belt-type drier

Abstract

The invention discloses a heating plate of a belt-type drier. The heating plate of the belt-type drier comprises a top plate, a bottom plate, side plates, a heat conduction device, heat conduction strips and a heat conduction working medium, wherein the lower end of the bottom plate and the top plate are fixedly connected into a whole through four side plates, a U-shaped groove is formed in the joint between the lower end of the bottom plate and the lower end of the side plates, and the interior of the heating plate of the belt-type drier is sealed and airtight; the heat conducting strips arefixed below the top plate, and the heat conduction working medium is arranged around a heating device in the U-shaped groove at the joint between the lower end of the bottom plate and the side plate;the heating plate of the belt-type drier is a gravity heat pipe, the top plate and the heat conduction strips are condensation sections of the heat conduction working medium, and the heating device isan evaporation section of the heat conduction working medium. The heat conduction working medium does not generate water scale oil dirt during long-time heat conduction heating in the heating plate of the belt-type drier; and heat energy carried by the heat conduction working medium is conducted on the top plate and the heat conduction strips, the heat conversion efficiency is high, the loss is low, the heat conduction heat exchange speed is improved, and the effective utilization rate of the conduction heat exchange of the heating plate of the belt-type drier is high.

Description

technical field [0001] The invention relates to a heating plate, in particular to a heating plate of a belt dryer. Background technique [0002] The mesh belt dryer is a drying equipment for batch and continuous production. The main heating methods include electric heating, steam heating, and hot air heating. During the material drying process of the mesh belt dryer, the heat used for heating is the hot air generated by the external heat energy of the mesh belt dryer through the heat exchanger. The heat energy conversion efficiency is low, and the use of heat energy for hot air convection drying is Disposable, the effective use rate of heat energy is low, and the heat energy required for drying will increase a lot. [0003] The heating plate of the vacuum mesh belt dryer uses heat conduction to provide heat to the material. The heating plate can only be installed close to the bottom of the upper conveyor belt. Since the material is in contact with the heat medium (conveyor...

AI Technical Summary

Problems solved by technology

During the material drying process of the mesh belt dryer, the heat used for heating is the hot air generated by the external heat energy of the mesh belt dryer through the heat exchanger. The heat energy conversion efficiency is low, and the use of heat energy for hot air convection drying is Disposable, the effective use rate of heat energy is low, and the heat energy required for drying will increase a lot

[0003] The heating plate of the vacuum mesh belt dryer uses heat conduction to provide heat to the material. The heating plate can only be installed close to the bottom of the upper conveyor belt. Since the material is in contact with the heat medium (conveyor belt) on one side; when the heat transfer medium (water, heat transfer oil) in the heating plate flows and conducts heat in the heating plate for a long time, scale and oil will form on the inside of the heating plate, and the inside of the heating plate The structure is complex, and the scale and oil on the heating plate are not easy to clean and descale. The heating plate with scale and oil will affect the conduction and heat transfer of heat energy

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