Vibrating Screen Principle Process: Screening: granular material through one or several layers of mesh to size according to the size of a number of grades into the process. Screening the main tools: screen, the screen has a certain size of the sieve to complete the classification task. Screening: The material that is sieved on the screen.
The conditions under which the material can pass through the screen:
A, the maximum particle size is less than the sieve
B, there is sufficient opportunity to penetrate the screen.
Particle size is smaller than the sieve, but with a very fast rate along the screen surface; fall when the collision sieve; between the particles and the extrusion of the particles in the sun formed on the net arch, hinder particles through the net, making the mesh than the particles 6 times when it is difficult to through the screen; mesh material has a certain thickness, the fine particles first through the material layer to reach the screen surface, requires a sufficient length of the screen and the relative movement of material and screen, this movement through the sieve machine Vibration to complete.
Vibrating Screen Principle:
So that the material loose, the destruction of particles from the puzzle of the arch; the material to the discharge end of the movement; in the course of the campaign by material granularity, large, small in the next; screen surface of small particles in the translation and throwing movement Vibration causes the particles embedded in the sieve to be re-ejected, so that the hole is not blocked (static can see the plug sieve, but in the process of screening the majority will be ejected) ;
Particle size distribution (structure) Generally speaking, under the sieve content, processing capacity
The maximum particle size should not exceed 2.5-4 times the sieve aperture
Difficult to screen grain: sieve 3/4 <hard sieve> sieve
Sieve 3/4 <hinder granule <1.5 times the sieve
Obstruction rate: sieve <obstruction rate <1.5 times the sieve, hinder the particle content of the less easy to sieve, the higher the screening efficiency
Screen machine causes: hole rate: the area of the screen with the entire screen area ratio, mainly depends on the thickness of the screen and screen size. (The hole size is the same) the thicker the screen, the smaller the hole rate, the smaller the sieve capacity; sieve shape: the capacity of the rectangular hole handling capacity is greater than the square (for the accumulation of spherical)
Screen area: The effective screening area is directly proportional to the screening efficiency (screen area conversion table); Screen: Screen is the main tool for screening, its quality is good or bad, and the choice of a direct impact on screening efficiency And products