Grain drying and dehumidifying heat pump unit and grain drying circulation heat pump system

Abstract

The invention discloses a grain drying and dehumidifying heat pump unit and a grain drying circulation heat pump system. According to the technical scheme, the grain drying and dehumidifying heat pump unit and the grain drying circulation heat pump system comprise a drying chamber, a drying cavity is formed in the interior of the drying chamber, a drying and dehumidifying mechanism is arranged in the interior of the drying cavity, a circulation preheating mechanism is arranged on one side of the drying chamber, the drying and dehumidifying mechanism comprises an exhaust pipe, the exhaust pipe is arranged in the interior of the drying cavity, the two ends of the exhaust pipe both penetrate through the drying chamber, the exterior of the exhaust pipe is provided with a material blocking cover plate in a sleeved mode, the two ends of the material blocking cover plate are fixedly connected with the side wall of the drying cavity, the exterior of the material blocking cover plate is provided with a disc in a sleeved mode, and one side of the disc is fixedly connected with an annular inner gear. The grain drying and dehumidifying heat pump unit and the grain drying circulation heat pump system have the beneficial effects that the influence and pollution to the environment during grain drying are reduced, the labor intensity during grain drying is reduced, the automation degree of the drying process is improved, meanwhile, the hot air pushing efficiency is high, the drying efficiency is high, hot air circulation conveying is achieved, the hot air utilization rate is improved, and energy conservation and environment protection are achieved.

Description

technical field [0001] The invention relates to the field of drying and dehumidification equipment, in particular to a grain drying and dehumidifying heat pump unit and a grain drying circulation heat pump system. Background technique [0002] The grain drying method is to give the grain a certain form of energy through the drying medium, so that part of the moisture in the grain will be vaporized and overflowed. The basic condition for realizing the drying process is to have energy transfer, transformation and consumption, and use heating gas (furnace gas, hot air) Direct contact with the grain, the heat is transferred to the grain by convection, so that part of the moisture in the grain is vaporized, so as to achieve the purpose of drying. The vaporized moisture is taken away, so the drying medium acts as a heat carrier and a mixture. The convection dry coal method is the most widely used in grain drying technology, and the convection heat transfer grain dryer is also the ...

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Problems solved by technology

[0005] Therefore, the present invention provides a grain drying dehumidification heat pump unit and a grain drying circulation heat pump system, through the drying dehumidification mechanism and the circulation preheating mechanism, to solve the serious pollution of combustion flue gas in grain processing, poor production environment, and high labor intensity of workers. At the same time, in the drying process, the traditional heat pump machine pushes the hot air slowly, the hot air drying efficiency is poor, and it does not have the advantage of energy saving, resulting in the problem of low utilization rate of hot air

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