Food grain drying system through heat pump

Abstract

The invention relates to the technical field of drying of food grains, in particular to a food grain drying system through a heat pump. The system comprises a drying tower, a heat pump device, a thermal wind input device and a wet wind output device, wherein the heat pump device comprises a heat pump evaporator, a heat pump cycle wind chamber, a heat pump condenser and a heat pump compressor; the heat pump evaporator, the heat pump cycle wind chamber and the heat pump condenser are sequentially connected; the heat pump cycle wind chamber communicates with the heat pump compressor; the thermal wind input device comprises a thermal wind mixing chamber and a thermal wind transfer pipeline which are sequentially connected with the heat pump condenser; the wet wind output device comprises a wet wind output pipe, a dust removal collecting chamber and a wet wind mixing chamber which are sequentially connected with the drying tower. According to the food grain drying system through the heat pump, provided by the invention, the drying tower, the heat pump device, the thermal wind input device and the wet wind output device form a closed cycle energy recovering structure of dried cycle wind, and the purpose of drying food grains in an environmentally-friendly, energy-saving and efficient manner is achieved.

Description

Technical field [0001] The invention relates to the technical field of grain drying, in particular to a heat pump grain drying system. Background technique [0002] Grain drying is a necessary part of grain storage. For a long time, the ways to dry grain mainly include natural drying and heat source drying. Among them, the natural drying method has the advantages of no pollution, no energy consumption, and high quality. The disadvantages are mainly low efficiency and large environmental impact; while the heat source drying method mainly relies on the combustion of coal and biomass to provide heat sources, and has high drying efficiency. Advantages, but the disadvantages are that it consumes energy, will cause air pollution, and the drying quality is not high. [0003] As the environmental pollution problem has become very serious in recent years, the energy consumption and pollution of heat source drying in the main grain producing areas have become a very urgent task. Summary of...

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to solve the problems of large energy consumption, air pollution and low efficiency in the existing drying methods

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