Sectional feeding continuous low pressure superheated steam drying equipment and drying method

Abstract

The invention discloses sectional type feeding continuous low-pressure superheat steam drying equipment. The equipment is characterized by comprising a water ring vacuum pump, a condenser, a drying chamber, a condensate water storage device, a stock bin, a steam generator, a front sealed conveying pipe assembly, a steam distributor, a rear sealed conveying pipe assembly and an air drying transmission belt mechanism. According to the sectional type feeding continuous low-pressure superheat steam drying equipment provided by the invention, the material conveying systems with liquid dynamic sealing performance are arranged in front of and behind the drying chamber respectively; a post-processing link is added; and therefore, the continuity of low-pressure superheat steam material drying is achieved, and the losses of heat energy and media in vacuumizing and pressure releasing procedures in a batched drying process are reduced.

Description

technical field [0001] The invention relates to the technical field of agricultural machinery, in particular to a section-feeding continuous low-pressure superheated steam drying equipment and a drying method. Background technique [0002] Since Chinese medicinal materials, fruits and vegetables, seafood and other materials need to be dried, they can be stored and transported for a long time. The current mainstream drying methods are low-temperature hot air drying, vacuum drying, freeze-drying, etc. Low-temperature hot-air drying causes surface oxidation of materials and affects the quality. Vacuum drying and freeze-drying have problems such as high drying costs. The temperature of low-pressure superheated steam is low under low pressure. Utilizing this characteristic to use low-pressure superheated steam as a drying medium to dry materials can ensure the drying quality of materials and reduce energy consumption. Low-pressure superheated steam equipment is currently limited ...

AI Technical Summary

Problems solved by technology

The current mainstream drying methods are low-temperature hot air drying, vacuum drying, freeze-drying, etc. Low-temperature hot-air drying leads to surface oxidation of materials and affects the quality. Vacuum drying and freeze-drying have problems such as high drying costs.

The temperature of low-pressure superheated steam is low under low pressure. Utilizing this characteristic to use low-pressure superheated steam as a drying medium to dry materials can ensure the drying quality of materials and reduce energy consumption. Low-pressure superheated steam equipment is currently limited by the capacity of the drying room. Most of them are batch drying, which greatly affects the production efficiency

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