life in various fields have screening device applications, such as food screening, screening materials, chemical industry, mining industry and so on. Screening is the use of rotating machinery vibration, reciprocating, shaking and other actions of various raw materials and primary products through various screens respectively, according to the material particle size is divided into several levels or to one of the water, to remove impurities Open Cast Gold Mining Equipment, then the next step processing and mechanical equipment to improve product quality when used. Due to the nature of screening materials, field of application is different, screening equipment can be divided into cylindrical screen, circular vibrating screen, vibrating sieve, sieve resonance and other types of screening machines. These devices are widely used in various industries, especially in mining, construction, chemical, food processing. Different screening machine, the main principle of the device is different. First we look at the simple principle of the cylindrical screen Gravel Crusher For Sale In Singapore. When the device is working, the entire screen rotation around the cylinder axis, the axis in general downloading into the dip. Material from one end of the cylinder to the fine level material from the working surface through the cylindrical sieve, coarse-grained material is discharged from the other end of the cylinder. Circular Vibrating Screen How it works? The device is the use of a vibrator in the eccentric rotation of the centrifugal force, so that the screen box, vibrators and other moving parts as mandatory continuous circle or an approximate circle movement. Material in the screen box with tilt screen surface for continuous throwing motion, when stratified toss, when the particles fall through the sieve. The third is the linear shaker works. This device is widely used in the mining industry. Linear vibrating screen for dual vibration motors. Work, under the joint effect of the exciting force and material self-gravity, the material is thrown forward in a straight line or jump in the screen surface, so as to achieve the purpose of the material for screening and grading. Finally, look at the resonance screen works. Resonance screen contrary is the natural frequency of the effective use of the device FRA Crusher Equipment Cost, in close co-vibration state, and therefore consumes very little power. Because the structure is more complex resonance screen, adjust the trouble, high failure rate, the other in many aspects of structural strength, so from the beginning of the 1980s, the mining industry in the country, has been rarely promote the adoption.