The working condition of vibratory separator well usefully emulate human manual actions and processes, which is excited by vertical motor and make sifter do uniform circular motion by eccentric mechanism. Under the action of sieve moving in circles, the rotation motion of the motor will be changed into a horizontal, vertical and inclined three-D motion, and then the motion is evenly transferred to the sifter, the mesh produces a cutting motion on the powder and create automatically classify. So the smaller size of the material quickly sieving, and the larger size of the material above is moving towards the end of the material until out of the machine, and the whole process of material screening is completed. In the screening process, the jumpy elastic ball effectively prevent the sieve mesh from blocking, which can change the movement track of material on the sifter and meet the screening requirements.

The problems and causes of vibratory separator
The subject matters of vibratory separator are including that the screen is easy to be torn, the screen has high plugging rate and is not easy to clear out, and the screening efficiency is low. For these problems, there is the cause analysis about the characteristics and use of the screen.
The main problems:
A. The tension of the screen is not enough or uneven;
B. The wrong vibration motor rotation;
C. The material accumulations;
D. Material is spherical particles, which will have static cling and agglomeration and clog the mesh seriously.
F. Hammer phase Angle adjustment is not in place
The improvements
1. Changing the paste technology of screen
    a.Laying the screen on the wire frame
    b.Fixing the screen on the wire frame by the hoop, and adjusting the the tightness of the screen by adjusting the tightness of hoop bolt
    c.Gluing the screen tightly to the wire frame by gluing along the frame
    d.Removing excess mesh along the perimeter of the frame
2. Changing the way to cleaning the screen
Vibratory separator prevent sieve pore from blocking by the jumpy elastic ball, and achieve the purpose of cleaning the screen. But during the using process, the phenomenon of screen plugging is very serious, which means it do not show obvious effects. Besides, the bounce height and strength of the ball are not easy to control, and it is easy to cause damage to the screen. Therefore, ultrasonic vibration can be used instead of elastic ball to clean screen, that is, building a coalition with ultrasonic generator, ultrasound transducer and vibratory separator.
3. Adjusting the hammer Angle
Adjusting the hammer phase angle can change the motion track and standing time of the materials on the screen. When the phase angle is less than 15 degree, the standing time of powder on the screen is the shortest with low screening efficiency, and only apply to common screen; when the phase angle is 45 degree, the standing time of powder on the screen is the longest, and apply to subtle screen; and when the phase angle is greater than 45 degree, the motion track of powder move towards the center, and apply to special screen.
In the using process, the cost of energy consumption, materials, manpower and material resources has been greatly reduced because of the frequent repairing of the broken screen of vibratory separator, which proves these improvements are successful and shows its remarkable effects.