Apricots Infrared Radiation Drying Device Design And Study On Drying Characteristics

In recent years, infrared radiation drying method is developing very fast in the drying field.It was recognized because its high energy utilization rate, small heat inertia, clean and dry environment, high drying efficiency, good product quality after drying, and it can be easy to control.The material surface was uneven because its high heat flux density wnen infrared radiation drying method was used.In this study,An apricot infrared radiation drying device was designed, and the drying kinetics model was established on the basis of experiments on drying characteristics of apricot.(1)Mechanical properties of apricot in crisp ripe period were studied,which can provide a basis for reducing mechanical injury when apricot was producting, storaging, processing, packaging and transporting. The maximum stress of three directions(Fig.2-5) was tested by Mechanical test. The results showed that the greatest tolerance pressure were 73N,92.38N and 112.75N respectively. The maximum impact speed was tested by free fall test,which showed:vmax=5.05m/s.(2)Infrared radiation drying device to the vibrating motor and the flexible body for parts was designed, which was to solve the uneven surface problem. The movement of material tray and apricot In the interaction of the vibrating motor and the flexible body was also studied. The translation motion and the tumbling motion were known by the analysis of the installation angle of vibration motor. The experiment showed that the apricot was heated evenly, and the high drying quality can be guaranteed.(3)Virtual motion model was established by the rigid flexible hybrid modeling module of virtual Prototype Technology. Displacement curve and Speed change curve was obtained. The curve described the movement of material tray under the dual influence of the vibrating motor and the flexible body. To provide the basis for the design and optimization of drying device.(4)The little white apricot was the material in the drying characteristics of infrared radiation test. Drying characteristic curve were plotted, and effective moisture diffusivity of apricot was calculated. The test results showed that the infrared radiation temperature(T) was more significant than the radiation distance (h) in the effect of dehydration of apricot. The drying dynamics model was established, and the fitting test value proved that was good predictors of the drying characteristics.