Study On Separation And Damage Mechanism Of Citrus Peeling Based On The Dual Rollers Peeling Machine

Citrus is the major fruit in China, Which has high nutritional, medicinal and health value. Currently, peeling the citrus fruit is mainly accomplished by the manual labor, which is definitely labor intensive, inefficient and results in the high risks of reducing the hygiene and quality of the citrus products. With the increase of labor cost and high requirement of food hygiene, it is necessary for the citrus processing industry to develop an automatic machine to replace the conventional manual peeling method to peel the citrus.In this paper,In order to solve the unfavourable situation of lacking of peeling theory research and automatic peeling machine,We designed a dual rollers peeling machine to to quickly peel the Citrus. And as a research object, We use this machine to reseach the peeling process of the Citrus and the Working mechanism of key components. Then we establish the mechanical model of peeling process and flesh injury model of citrus to explain the mechanism of citrus peel separation. And the existing dual rollers peeling machine of citrus was improved. We hope this reseach may also offer a new and creative idea for the development of the advanced, stable and high performance peeling machine.The main contents and conclusions of this paper are as follows:(1)The citrus movement process was analyzed. With the aid of the high speed photography technology, it is clear that the key factors such as fruit type index, fruit diameter, variety and other key factors affect the form of Citrus movement. The kinematics characteristics of Citrus in the process of clear movement are defined.(2)The rules of Citrus movement were analyzed, and the corresponding control strategies were put forward.Combined with the dynamics and kinematics analysis of the dial plate and the rear baffle rod, on the key components and structure, size, arrangement, operation parameters for citrus motion effect of, clear orange movement in the process of kinematic characteristics of the extracted citrus trajectory and displacement, velocity, acceleration and other parameters. We have Cleared dial plate of citrus and and contact point, force, determined to provide continuous from the fruit surface tear peel is also not due to pericarp was caught off of the roll clamping force.(3)The peeling mechanism of citrus peel was analyzed. Combined with stripping mechanics theory, the theoretical analysis on the process of peel of citrus peel, citrus peel peeling process mechanics model is established, analysis the width delamination, peeling angle, stripping speed and other factors on the peeling process influence.And set up a mechanical test bench based on the texture of the citrus peel peel, the peel of citrus peel test, and through the test data to verify the accuracy of the model.(4)The damage mechanism of citrus pulp was analyzed.Using nonlinear finite element method, according to the biological characteristics of existing citrus peel and flesh, physical characteristics and mechanical properties parameters, probability density function of citrus fruit size and fruit shape index, the establishment of finite element simulation analysis of Citrus 3D geometric model of Citrus Based on finite element simulation analysis is established.In the finite element software, the citrus contact model was established, and the nonlinear behavior of the contact deformation zone state was simulated and analyzed.The model was used to validate the model, and the damage mechanism was explained, and the mechanical damage of the citrus peeling process was predicted.(5)In combination with the above research, some improvements to the existing roller type citrus peeling machine were carried out in order to achieve a better peeling effect.