The Vibrating Screen (Oscillating Screen) is of many layers and high efficiency. The oscillating Screen adopts the barrel type of eccentric shaft vibration exciter and eccentric block to adjust the swing. The screen is of the following characteristics, the screening line is long and specification of materials screened is various, and it is also of reliable structure, strong exciting force, high screening efficiency, low vibrating noise, long durability, convenient maintenance, safe operation, etc. And the vibratory screen is widely used for screening in wide range including mines, building material, transportation, energy sources, chemical industry, etc. Working principle of vibratory Screen: The vibrating screen consists of screen box, supporting device, vibration exciter, transmission part, etc. The barrel-type vibration exciter is installed in the middle part of the machine. During normal operation, the vibartion of exciter will drive the screen mesh fixed on the screen box vibrate, and then materials will be screened. The big and small materials fall from the upper side and lower side of the screen to get them separated. This series of vibrating screen moves round, which is designed for screening material in stone quarries. It has multi-layers and is highly efficient. The eccentric shaft vibration exciter and partial block help to adjust amplitude. The material drops down the long line. This machine bears the features of different specifications, reliability, strong exciter, high efficiency, little noise, durability, convenient maintenance and safetly. It is widely used for classification in mining, construction material, transportation, energy industries and etc.