Transmission dried three-roller dryer

Abstract

The invention relates to a transmission dried three-roller dryer. The dryer comprises a feeding and exhaust device, a heating groove, supporting wheel supports, supports, a driving device, a gear ring, a heat conduction medium, heat conduction tubes, a heating device and a heat insulation layer. Supporting wheels of the supporting wheel supports support a discharge hole and a feeding hole of a three-roller drying warehouse; the cylinder body of an external cylinder of the lower half part of the three-roller drying warehouse is soaked with the heat conduction medium in the heating groove; the feeding and exhaust device is arranged in the feeding hole of the three-roller drying warehouse. Heat energy of the heating device can conduct heat conduction and heat dissipation on materials in the three-roller drying warehouse through the heat conduction medium, the heat conversion efficiency is high, the loss is little, and the heat transfer speed of heat conduction is increased. When the materials are dried, surplus hot air does not need to be used, the heat loss which is taken away by the exhaust device can be ignored, the effective use rate of whole heat energy is within 75-90%, a flow guide plate stirs and pushes the drying materials, the evenness of material drying is improved, the efficiency of material drying is improved, and the effect of material drying is optimized.

Description

technical field [0001] The invention relates to a dryer, in particular to a conductive drying type three-cylinder dryer. Background technique [0002] Now on the market, there are drying equipment for materials such as grain, chemical products, coal, gravel, sand, mineral products, pasture, crops, and local products. Most of the three-cylinder dryers on the market now use external heat exchange for hot air. The heat exchange efficiency of heat energy is low, the use of heat energy for hot air convection drying is one-time, and the heat energy required for drying will increase a lot, which will affect the uneven drying moisture of materials. The heat pipe dryers currently on the market have a high failure rate during use and are not easy to maintain. [0003] The energy consumption index of conduction drying is 2800-4000kj / kg, while that of convection drying is 4000-7500kj / kg; the effective utilization rate of heat energy of convection drying is generally only 20-50%, while ...

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Problems solved by technology

[0002] Now on the market, there are drying equipment for materials such as grain, chemical products, coal, gravel, sand, mineral products, pasture, crops, and local products. Most of the three-cylinder dryers on the market now use external heat exchange for hot air. The heat exchange efficiency of heat energy is low, the use of heat energy for hot air convection drying is one-time, and the heat energy required for drying will increase a lot, which will affect the uneven drying moisture of materials

The heat pipe dryers currently on the market have a high failure rate during use and are not easy to maintain

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