Impact on Motor Speed of a New Rotary Vibrating Screen with Material Kinematics Characteristics

摘要

In order to solve the problem that the existing screening equipment is bulky and unsuitable for fine sample preparation of each sample, this paper proposes a small-scale rotary vibration sieve that can be sieved repeatedly by using inclined sieve surfaces. Based on the theory of multi-body dynamics, the virtual prototyping technology was used to simulate the motion characteristics of the material on the screen. By comparing the trajectory, velocity and angular velocity curves of the material at different motor speeds, the motor speed value with the best material motion characteristics and the range of motor speed values in subsequent experiments can be obtained. This section produced experimental equipment and conducted screening efficiency experiments to verify the accuracy of the simulation results. The results show that the maximum speed of the motor obtained in the simulation is 600 r/min-1200 r/min when the material dynamic characteristics are the best; after the experiment in this interval, the screening effect of the motor rotation speed in the range of 960 r/min to 1020 r/min was obtained. The simulation results are in accordance with the experimental results. This study can provide a new method for screening equipment design and provide an important basis for follow-up research.