Solar energy double cycle agricultural product drying equipment and its application in drying agricultural products

Abstract

The invention discloses solar-energy double-circulation agricultural product drying equipment and an application thereof in agricultural product drying. The solar-energy double-circulation agricultural product drying equipment comprises a solar heat collector arranged on a support, and the upper end and the lower end of the solar heat collector are provided with an air inlet duct and an air outlet duct respectively; a drying chamber is arranged below the support, an uniform air chamber is arranged in front of the drying chamber, a circulating fan is installed on a partition plate located between the drying chamber and the uniform air chamber, and a moisture removing fan is installed behind the drying chamber; an front inlet of the uniform air chamber is connected with an outlet of an air feeder, and an inlet of the air feeder is connected with the air outlet duct through an air feeding pipe; the top end of the drying chamber is connected with an inlet of an induced draft fan, and an outlet of the induced draft fan is connected with the air inlet duct through an induced draft pipe; air returning shutters are arranged on the partition plate located between the drying chamber and the uniform air chamber. According to the solar-energy double-circulation agricultural product drying equipment, a drying system integrates inner circulation and outer circulation into a whole, inner circulation channels and outer circulation channels are mutually independent, inner circulation and outer circulation can be independently or simultaneously performed as needed, therefore, heat energy is fully utilized, energy sources are saved, uniform air drying can be achieved, and the drying quality can be effectively guaranteed.

Description

Technical field [0001] The invention relates to a drying equipment, in particular to a drying system that uses solar energy as a heat source, a drying system that integrates internal and external double circulation methods, and uses solar energy to heat the air to treat granular, flake, and block shapes (including natural shapes and processing A solar drying device for drying agricultural products of shape). The present invention further relates to the application of the drying device in drying agricultural products, which belongs to the field of solar drying equipment. Background technique [0002] At present, the methods for drying agricultural products mainly include traditional natural air drying, traditional hot air drying, microwave drying and low-temperature freeze drying. For a long time, most areas in China still use the original natural drying method for dehydration and drying of agricultural products. This method has a series of problems such as long drying cycle, low ...

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Problems solved by technology

For a long time, most areas in China still use the original natural drying method for dehydration and drying of agricultural products. This method has a series of problems such as long drying cycle, low efficiency, poor product quality and low hygienic quality; traditional heat sources such as gas, oil, and coal Hot air drying not only greatly damages the color, nutrients and other biologically active substances of agricultural products, but also consumes a lot of energy, causes heavy pollution, high cost, and poor quality; while drying equipment using microwave technology and low-temperature freezing technology, although in quality and efficiency have been improved, but it is difficult to popularize and apply because of high energy consumption, high production cost and equipment cost

[0003] The drying system of the existing solar drying equipment only has a single air medium circulation system, which cannot make full use of heat energy, save energy, and cannot achieve uniform air drying, resulting in poor product quality after drying, which needs to be improved urgently

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