A heat exchange tail heat recovery microwave oxygen insulation dryer

Abstract

The invention discloses a heat-exchanging tail heat recovering microwave oxygen-insulating drying machine. A tunnel-shaped glass cover is fixed on a conveying belt substrate; an upper plate is provided with vent sieve pores, and is covered with a glass packing ring; microwave units are arranged above the packing ring; a material on the conveying belt is heated by the microwave units in the glass cover, and arrives at the conveying belt of an insulating box through a slide carriage; an insulating curtain and an air blower are arranged at the outlet of the tunnel-shaped glass cover, and an insulating curtain is arranged at the inlet; a suction pipe is communicated with the microwave units above the vent sieve pores; the suction pipe enters a hot air drying system of the insulating box through a tube type heat exchanger. By adopting the heat-exchanging tail heat recovering microwave oxygen-insulating drying machine, continuous efficient enzyme deactivation and synchronous oxygen-insulating drying are realized under a non-vacuum condition, and industrial implementation is facilitated; tail heat is easy and reliable to recycle, and the cost and energy consumption are lowered; air is insulated by the packing ring, and moisture can be pumped away timely; hot air parallel flow contributes to keeping uniform quality, so that the drying machine is particularly suitable for drying agricultural products which tend to be catalyzed by enzymes and undergo high-temperature oxidation browning, and has a wide application prospect.

Description

technical field [0001] The invention relates to a heat exchange type tail heat recovery microwave oxygen insulation dryer. Background technique [0002] Drying is to remove the moisture in the material, which is widely used in food, chemical industry, agricultural product processing, biological product processing and other fields, and is a unit operation with high frequency of use. [0003] Drying can be carried out in the air or in the sun under natural conditions, but for industrial production, drying is generally carried out in a dryer. For agricultural products such as lilies that are prone to enzymatic and oxidative browning, they generally need to be boiled at high temperature first. Drying is carried out after enzyme-killing treatment, and drying also has special requirements, that is, it is hoped that oxygen should be separated while heating (the speed of oxidative browning will be greatly increased during heating), and fast and efficient drying can be carried out un...

AI Technical Summary

Problems solved by technology

[0004] In order to achieve the purpose of oxygen isolation, vacuum drying is generally used at this stage, but the cost of vacuum drying is high, the efficiency is low, and there are high requirements for equipment, so it is difficult to realize continuous industrial production; on the other hand, the existing drying equipment There are also technical application obstacles such as high energy consumption and difficult heat transfer and penetration, so the existing technology cannot meet the drying requirements of lilies, which are prone to enzymatic and oxidative browning.

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