The Design On Vibration Parameters Of Anti-resonant Vibration Sieve And Experiment Study

The inertia reciprocating vibrating sieve is widely used in food, metallurgy, mining and other industrial, which is an important screening machinery. The vibrating sieve is simple in structure, stable amplitude, but there are also some problems:Firstly, the vibration motor together with the sieve box vibration, resulting in a shorter bearing life; secondly, the sieve box supporting spring have a large dynamic deformation, resulting in the foundation under large dynamic loads. The main characteristics of anti-resonance vibration sieve based on the theory of anti-resonance: vibration motors are installed on the motor frame, and the motor frame through the rubber spring is installed on the rack, and sieve box through the metal helical spring is installed in the machine frame, and the force of vibration motor is passed to the sieve box through metal helical spring that connect sieve box and electric frame. When the normal operation of the equipment, the sieve maintain constant amplitude, while the amplitude of the motor frame is very small. The anti-resonance vibration sieve can overcome the main shortcomings of traditional vibrating sieve.Firstly, the mechanical model and mathematical model of anti-resonance inertia vibrating sieve was established, then get the solution of mathematical model, finally we get the steady-state amplitude of the sieve box and the motor frame. By analyzing the influence of kinetic parameters on the sieve box and motor frame amplitude-frequency characteristic curve, the engineering design reference value of the inertia reciprocating vibrating sieve are put forward. These parameters include the sieve box and motor frame support spring type, sieve box and motor frame support spring stiffness, exciting force and other parameters.Secondly, the electromechanical coupling model of anti-resonance vibration sieve was established, and then it was studied by way of numerical simulation.Through the numerical simulation of the different motor power and the system natural frequency, the essence of equipment of the transient process were further revealed, providing theoretical basis for improving the transient process of equipment.Finally, by making experimental prototype and experiment research, we verified the correctness of the design of anti-resonance vibrating sieve and provide engineering design method for the further research and application.