1.       Working principle

Ultrasonic sieving system consists ofultrasonic generator,energy converterand resonant ring. Ultrasonic generator produces high frequency oscillation and energy converter turns it into high-frequency sinusoidal longitudinal shock wave. This shock wave gets to resonant ring to make it resonate. Then resonant ring puts oscillation transmission to screen surface evenly. Materials on the surface will do low-frequency three dimensional vibration and ultrasonic vibration at the same time. This can prevent mesh clogging and improve yield and quality of screening.
 

2.       Product feature

·Ultrasonic wave uses integrated circuit plate, fully obturated, digital CPU control, specialized voyage plug: it can continue working for 12 ~ 24 hours, there is no cooling process.

·Screening precision can be improved by 70% and handling capacity is 2 ~10 times more than the common screening machine. It is particularly significant to materials which are difficult to screen such as Silicon carbide powder, hard alloy powder, coffee powder.

·Sieving mesh can reach 600. It can completely self-clean, be easy to operate and maintain.

·It can really solve some difficult problems such as strong absorption, easy reunion, high static, high precision, high density, light proportion and so on.

·It can ensure that the characteristics of the materials are unchanged.
 

3.       Comparison between ultrasonic vibration screen and common vibration screen
 

Sample specs(mm)	Common			HLC series
	Trial material	Mesh	result	Mesh	result
HLC-1000	SIC	500	Cannot screen	500	1500KG/H
HLC-1000	Cobalt alloy powder	600	There is no fine powder in 15 minutes	600	30KG/H
HLC-1000	Vitamin C	100	1KG/H	100	120-150KG/H
HLC-500	Flower powder	400	There is no fine powder in 15 minutes	400	Screen more than 20% powder in 15 minutes and can screen more than 500 mesh
HLC-600	Ni, Co powder	325	Have to screen 3 times	400	Just once
HLC-450	Nd-Fe-B powder	300	More than 32.2% remain in 30 minutes	300	Only 6.9% remain in 30 minutes