Efficient Self-Cleaning Sizing Screen

1)、Applications：

Efficient self-cleaning sizing screen is mainly used for classification of raw coal particle size in the coal industry, especially suitable for dry deep classification of granular coal (6mm ~ 13mm) and screening of coal used in power plants, and for raw coal with special viscosity and moisture (including external moisture 7-14) and bad conditions, the screening efficiency can reach more than 70%.

2)、Structure principle：

Driven by a motor, reduce the speed through the large belt pulley、small belt pulley、v-belt, the rotating speed and power are driven from the bearing seat and universal shaft to the eccentric mass block of the exciter. Two sets of eccentric mass blocks are driven by gears, synchronous reverse operation, generate resultant force by designed vibration direction, make the screen frame do high strength reciprocating linear vibration. At the same time, each cantilever bar on the screen surface generates secondary vibration at the primary vibrating frequency of the exciter, which can effectively remove materials blocking in the screen seam, and the screen surface has the function of self-cleaning.

3)、Technical innovative point：

⑴ The whole screen has compact structure, small covering area, large vibrating parameters：n=970r/min、2A=10～12mm、 K=5.23g～6.31g，Angle of vibrating direction is 65°, make it work efficiently.

⑵ The screen panel adopts elastic cantilever bar plate, the material is wear-resisting and elastic manganese steel, the screen bar vibrates with the main machine at the same time, can generates secondary vibration independently, effectively solves the problems of critical particles、materials with special viscosity and moisture blocking the hole, makes its screening efficiency up to more than 90%.

⑶ Opening area rate of screen panel is high, handling capacity of unit area is large. Compared with the conventional screen which has the same opening area rate, handling capacity is increased by 1.5 times; Screen panel has long service life (more than 6 months), the price is cheaper than the screen panel of flip-flop screen, the maintenance cost is low.

⑷ All parts and components of the screen frame are assembled with cold riveting technology to avoid all internal stresses of the assembly. The cross beam adopts rectangular square beam structure with strong rigidity and stable、reliable operation.

4)、Performance parameter table：