Simulation Study On A New Type Of Corn Kernel Expanding Machine

A new type of corn expanding machine is designed in this paper for the low production capacity and unable to enlarge the production of old popcorn machine. The most granular grains can be produced by the new expanding machine, which is rich in varieties of raw material; at the same time, the common corn is used instead of the special popcorn, reducing the production cost, improving profit margins. A simulation is made in this paper on the base of the structure of the new type of expanding machine.First of all, the dynamic characteristics of the quick opening cover of the expanding machine were simulated and analyzed from the point of the consequence of the accident, using the Fluent dynamic mesh technology. And the maximum speed and the time and displacement of the quick opening cover when it is the maximum speed were got under different initial conditions, which provides a theoretical basis for designing the quick opening cover.Secondly, the recoil force was extracted out, which is acted on the expanding machine in the dynamic mesh analysis, as the impact load on the cross section of the cylinder. And the force variation law was studied under the axial impact load in the joint of the shell and the saddle. Then the law of the force variation was analyzed when the layout and the structure of the saddle was changed.Thirdly, the alternating load was acted on the main device of expanding machine, which is decided by the working nature of expanding machine, and the fatigue failure was caused easily, therefore, the fatigue analysis was studied to the expanding machine, and some parts of the structure of the expanding machine was improved.