Heat exchange tail heat recovery microwave oxygen insulation dryer

Abstract

The invention discloses a heat exchanging type tail heat recycling and microwave oxygen-separating drying machine. A glass cover is in a tunnel shape, is externally provided with a microwave unit and is fixed on a base plate under a conveyor belt; materials on the conveyor belt are heated by the microwave unit in the tunnel-shaped glass cover and then reaches the conveyor belt of a separation box body through a slide carriage; the outlet of the tunnel-shaped glass cover is provided with a separation curtain and an air blower, and the inlet of the tunnel-shaped glass cover is provided with a separation curtain and an exhausting pipe; the exhausting pipe enters the right end of the separation box body through a plate type heat exchanger; a convection fan is arranged in the separation box body and is penetrated from right to left by the conveyor belt; an exhausting fan is arranged at the left end of the separation box body. According to the heat exchanging type tail heat recycling and microwave oxygen-separating drying machine, continuous high efficient enzyme deactivation and synchronous oxygen-separating drying under a non-vacuum condition are realized and industrial implementation is convenient; the recycling of tail heat is simple and reliable, the cost and energy consumption are reduced and the energy conservation and emission reduction are realized; rear-section hot air parallel flow is good for moderately drying and keeping uniform quality; the heat exchanging type tail heat recycling and microwave oxygen-separating drying machine is particularly suitable for drying agricultural products which are easily subjected to enzyme promotion and high-temperature oxidation and 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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