The vibratory separator is equipped with two inertial vibrating screen of eccentric block. Through adjusting the Angle between the two of the eccentric block, so as to change the motion law of sieve machine, in order to meet the screening is not the work of art with the material to ask, with the screen surface for 3 d movement of high frequency, can be in order to prevent the mesh plug, sieving efficiency. Therefore, rotary vibration sieve is more and more widely used. Vibratory separator is a kind of inertia vibration screen, because the vibrator is equipped with upper and lower two eccentric blocks, so the vibration screen in addition to the circular track of horizontal vibration, but also for the rotation vibration around the vertical axis, the power required should include horizontal vibration and rotation vibration of two parts.
High frequency of vibratory vibrating to speed up the material sieving, improve the production ability, also can promote the oversize material automatic discharge (namely the self-discharging). However, when the vibration of a certain frequency add, inertia force increase. Considering the structural strength and screen surface to make in life, especially the fine screen, screen mesh stiffness is small, big inertia force, large mesh deformation, movement rule will have great changes, and often is not very stable, sieving conditions is damaged, screen is easy to damage, therefore, Vibration frequency should not be too high.
The amplitude of vibratory separator should be selected according to the size of the screen hole, screen hole size, amplitude should be larger; Mesh size is small, the amplitude should be small. The experiment shows that the vertical amplitude has greater influence on the production capacity of the screen machine than the horizontal amplitude, and it has a good effect on preventing the screen hole from blocking and improving the screening efficiency.
Vibratory separator is widely used, there have been a variety of domestic products. But, so far, the basic is still in the stage of imitation of inlet products, the motion analysis and parameter calculation of rotary vibration screen is lack of systematic research, there is no more complete theory to guide the design and application.