Energy-saving microwave drying equipment

Abstract

The invention relates to energy-saving microwave drying equipment capable of carrying out sufficient waste heat recovery on microwave steam. The problems that unit energy consumption is high, foreign taste is emitted and potential safety hazards are caused when some materials volatilize combustible gas in the drying process according to existing microwave drying equipment are solved through the product. The equipment is mainly composed of a preheating section and a microwave drying section and accessorily comprises a refrigeration system, a waste heat recovery system and an automatic nitrogen filling system. When the equipment carries out microwave drying on materials, an evaporator in the refrigeration system cools microwave steam into condensate water, remaining warm dry air is recycled, and gas emission is avoided; condensate water is used as an intermediate medium for recycling microwave steam heat which carries out preheating on materials together with heat produced by a condenser in the refrigeration system; and the automatic nitrogen filling system carries out rapid nitrogen filling protection when a combustible gas sensor, a controller and a release valve detect that the concentration of combustible gas in a cavity of the equipment reaches the preset value.

Description

technical field [0001] The invention belongs to the field of microwave drying, and relates to energy-saving, environment-friendly and safe microwave drying equipment. Background technique [0002] At present, microwave drying equipment is widely used in various industries due to its advantages of fast drying speed, high production efficiency, uniform drying, clean production and easy automatic control; High power consumption per unit; some materials will emit odor and peculiar smell when microwave drying; some materials have potential safety hazards due to flammable gas volatilization during the drying process. Contents of the invention [0003] Technical issues solved: [0004] Fully recover the heat of microwave steam to reduce energy consumption; the hot air in the drying process is in a fully closed cycle state, and the hydrogen sulfide, ammonia and ammonia nitrogen substances produced in some materials are the main sources of odor and odor, and condensed water is for...

AI Technical Summary

Problems solved by technology

[0002] At present, microwave drying equipment is widely used in various industries due to its advantages of fast drying speed, high production efficiency, uniform drying, clean production and easy automatic control; High power consumption per unit; some materials will emit odor and peculiar smell when microwave drying; some materials have potential safety hazards due to flammable gas volatilization during the drying process

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