The Positive and Negative Synergistic Airflow-Type Jujube Fruit Harvester (P-N JH)

Analysis and Test of Clamp Conveying Type Residual Film Recycling and Film Impurity Separation Mechanism

Aiming at the problem of the difficult separation of film in the process of farmland residual film recovery, a clamping conveying residual film recovery device was designed and studied. The device was mainly composed of a clamp plate, clamp plate conveying chain, chain wheel drive shaft, and the residual film conveying chain and frame. Firstly, the structure and working principle of the device are introduced. The tensile properties of the residual film are investigated to determine the relationship between the average clamping force, the height of the clamp plate, the spacing of the clamp plate, and the rotational speed of the sprocket. Then, the mechanical properties of the residual film are discussed. The influence weight of each factor on the film impurity separation rate is summarized by single factor tests. The regression equation between the factors and film impurity separation rate is established. The results of the variance analysis of regression equation show that the film impurity separation rate was 93.70% at 1.08 m/s conveying speed of clamp plate, with 12 clamp plates, and 7 residual film conveyor chains. Taking the maximum value of the film impurity separation rate (η) as the objective using MATLAB, the optimal result was in good agreement with the regression equation. In addition, the field test results show that the film impurity separation rate was 92.35%. Compared with the theoretical analysis results, the relative error was 1.35%. The research results provide a theoretical reference for the design of related devices.