1.       Working principle Ultrasonicsieving system consists of ultrasonic generator, energy converter and r esonant ring. Ultrasonicgenerator produces high frequency oscillation and energy converter turns itinto high-frequency sinusoidal longitudinal shock wave. This shock wave gets to  r esonant ring to make itresonate. Then r esonant ring putsoscillation transmission to screen surface evenly. Materials on the surfacewill do low-frequency three dimensional vibration and ultrasonic vibration atthe same time. This can prevent mesh clogging and improve yield and quality ofscreening. 2.       Product feature 1.Ultrasonic wave uses integrated circuit plate, fullyobturated, digital PU control, specialized voyage plug: it can continueworking for 12 ~ 24 hours, there is no cooling process. 2.Screening precision can be improvedby 70% and handling capacity is 2 ~10 times more than the common screeningmachine. It is particularly significant to materials which are difficult toscreen such as Silicon carbide powder, hard alloy powder, coffee powder. 3. Sieving mesh can reach600. It can completely self-clean, be easy to operate and maintain. 4.It can really solve some difficult problems such as strongabsorption, easy reunion, high static, high precision, high density, lightproportion and so on. 5. t can ensure that thecharacteristics of the materials are unchanged.