The Rotary Plate Strength Analysis Of Multifunctional Dryer

Multifunctional drying machine was mainly used for drying as paste and cake shape material. It can complete drying, crushing, and grading of material by a continuous operation. This article established three-dimensional model and mechanical model of the rotor. Rupture disks were analyzed by using finite element software, such as strength and dynamic characteristics under the hot-structure coupling. This has important theoretical significance and practical value for drying equipment manufacturing and application.In this paper, structure was analyzed from the two aspects:dynamic and static mechanical, finally, the structure was optimized.In terms of dynamics, finite element method to establish the simplified model of the rotor and rotor were calculated the first two order natural frequency and vibration mode. Calculated the first 10 order natural frequency and the first order critical speed include the gyroscopic effect. The results showed that the working speed away from the first order critical speed, the rotor belongs to the rigid rotor. Solve the rotor critical speed considering bearing stiffness under dynamic load, the results showed that the rotor bearing static stiffness can be applied when calculated. Using the harmonic response analysis to find the amplitude frequency response of the rotor, the natural frequencies of the rotor was verified. The amplitude response of the rotor under different acceleration time showed that motor startup time select 23s was appropriate. Simulation the blade and material collision and the results were the Fourier transform, the results showed that collision force was composed of three kinds of frequency. Calculating the rotor respond to be encouraged by the spectral response, results showed that the structure was safe.In statics, calculate the temperature field distribution of the rotary. It was concluded that the rotor structure stress under the coupled action of thermal and structure, the results showed that the stress was far lower than the allowable stress, turntable happens inside concave deformation, the maximum deformation was 1.1mm. After optimized the size of rotary table, to calculated the temperature and thermal stress distribution of the rotor, the optimized wheel had lower quality, higher critical speed, the stress distribution was more uniform.