Classification Principles Of Screening Machine

Fixed screen

Working part fixed and sliding along the face by leaving the material to be screening material. Fixed grid screen in the application of a concentrator, generally used for crushing or broken before the pre-screening. It is simple structure, convenient. Not consume power, the ore can be directly unloaded to the screen surface. The main drawback is the low productivity, low screening efficiency, generally only 50% to 60%.

Roller screen

Face by scrolling horizontally arranged axis consisting of a root, shaft with the plate, fine-grained material from the roller or plate through the gap between. Bulk material from the roller-driven movement to and from the end of the discharge end. Concentrator in this seldom sieve.

Cylinder Screen

Cylindrical part of the work, the entire screen rotation around the cylinder axis, the axis in general, not downloading into the dip. Material from one end to the cylinder into the fine-level work surface materials from the barrel through the sieve, coarse-grained material discharged from the other end of the cylinder.

Cylinder Screen speed is very low, smooth, good power balance. But its easy to plug the sieve, screening efficiency is low, the work area is small, low productivity. Concentrator rarely use it for screening equipment.

Flat screen movement

Within the body is a flat swing or vibration. Its flat trajectory is divided into linear motion, circular motion, elliptical motion and complex motion. Shaking screen and shaker in this category.

Shaking screen is a crank as the transmission components. Motor through belt and pulley drive eccentric shaft rotation, so the body by the connecting rod for reciprocating movement along a certain direction. Direction of motion perpendicular to the body or suspension strut rod centerline, because the body of the swing movement, the screen surface material to a certain speed to move the discharge end, the material also be screening.

Several sieve shaking screen, compared with the above, its relatively high productivity and screening efficiency. The disadvantage is the driving force poor balance. Concentrator is now rarely used it, and be more structured shaker instead.

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by: nicole

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