Multi-layer energy-saving drying device

Abstract

The invention discloses a multi-layer energy-saving drying device. A plate-fin heat recoverer, a heater (or a combustor), multiple draught fans, an air uniformizing plate and the like are arranged ina box body and are combined, hot air supply of the multi-layer energy-saving drying device is uniform, the drying effect can be greatly improved, part of waste heat exhausted by the drying machine isrecycled, energy consumption of the drying machine can be greatly reduced, and the energy is saved. According to a lateral air supply multilayer drying machine with a heat energy recovery device, thepurposes of improving the drying effect and reducing the drying energy consumption are achieved by improving the air supply uniformity and recovering waste heat in exhaust gas of the drying machine.

Description

technical field [0001] The invention relates to the field of drying devices, in particular to a multilayer energy-saving drying device. Background technique [0002] When the material is stored or meets the next processing procedure, many materials need to remove the excess moisture contained in it for drying treatment. Especially in the food processing and chemical production industries, the dryer is an indispensable unit of equipment, such as figure 1 and figure 2 As shown, for the drying of flake, strip or granular materials, multi-layer belt dryers are generally used at present. Multi-layer transport conveyor belts are set in the drying box, and the materials enter the box from the feeding unit and fall on the drying box. On the uppermost conveyor mesh belt, the conveyor mesh belt carries the material forward, and the running direction of the upper and lower adjacent conveyor mesh belts is opposite, and the material continues to advance on the conveyor mesh belt that f...

AI Technical Summary

Problems solved by technology

[0004] 1. Because the dryer is too long, its length generally ranges from 8-30 meters. Using a large air supply fan will cause inconsistent air volumes in the front, middle and rear of the dryer ( / drying room), and the hot air cannot be distributed evenly. The distribution in the air chamber will affect the drying effect;

[0005] 2. Because the hot air of the dryer passes through the material layer by layer and is directly discharged, in order to ensure the drying effect, the exhaust air volume of the dryer is large and the exhaust temperature is high, resulting in a large energy consumption during the drying process, resulting in energy waste

[0006] 3. Hot air is not recycled, resulting in energy waste

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