2014年1月1日星期三

Screening machine

Vibrating screen with eccentric annular movable sieve, inertia vibrating screen and resonance screen, their common characteristic is the screen surface for high frequency, small amplitude of vibration, so that the screen material segregation. The mesh is not easy to be blocked, high screening efficiency, simple structure, light weight, low power consumption, but also sieving viscous or wet material, wide application; when the clay, silt or other impurities in raw materials, but also water flushing pressure on the screen, by wet sieving. The amplitude of the moving sieve eccentric ring not changed much screen material, suitable for the first screen. Screen size is generally 13 ~ 100 mm, up to 100 ~ 250 mm. Max feeding size up to300 mm. The inertia vibrating Sand vibrating screen with uniaxial and biaxial vibration system, the motion and material weight and spring stiffness, so the screen surface material or directly affect the amplitude, suitable for feeding quantity and size change is not the occasion, second screening is used to aggregate. The mesh size of 0.5 ~ 100 mm, maximum feed particle size between 100 to 500 mm. The resonance of Linear vibrating screen box is in a resonance condition, only supply overcome screening motion damping energy can work continuously, little power consumption. Suitable for fine stone, screening. The mesh size of 0.5 ~ 80 mm, maximum aggregate diameter 100 mm.Screening test can determine the size of coal in the yield and ash, sulfur, moisture, heat and other quality indicators, in determining the level and quality of screening, screening test data is the main reference. But Coal vibrating screen test data only is the theoretical value, the yield and quality of the actual screening level differs from the. This is not only into the sieve coal samples and the actual coal particle size characteristics are not consistent, there are efficiency screening.

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