As we all know, the screening of the polygonal material by the drum sieve mainly depends on the gravity and friction of the material itself. When the material is about to slide during the rotation of the drum sieve, the gravity of the material along the tangent at this critical point When the component is greater than the friction component, the material and the roller are relatively rolled. By this principle, the material can pass through the sieve holes to achieve the purpose of classification.
The speed of the material sieved by the roller sieve itself is much lower than the speed of the material in the linear sieving machine, and it can have more opportunities to pass through the sieve holes to achieve the purpose of classification. In the linear vibrating screen, the material runs at a speed of >0.2m / s, and the running speed is fast, which reduces the ability of the material to penetrate the screen. The polygonal shape of the material itself can easily block the sieve holes, so the screening capacity is not good, and the efficiency is reduced. Polygonal materials are sieved with a roller sieve. The gravity of the material glides on the drum sieve. The running speed is slow and the probability of penetration is high. Therefore, the screening efficiency is appropriately improved a lot.
