Ultrafine Turbine Classifier

Abstract

The invention provides a superfine turbine classifier, which is characterized in that, the housing of a powder outlet chamber is connected on a classifying chamber, the powder outlet chamber is connected with a dust collector. A main shaft extends out from the upper part of the powder outlet chamber to be connected with a power mechanism, and is fixed in the powder outlet chamber via a bearing, abearing seat, and flanges. The main shaft extending into the classifying chamber is provided with a shaft sleeve connecting an upper plate of a classifying turbine assembly, the upper and lower ends of the classifying blades are respectively fixedly connected with an upper plate and a lower plate, each classifying blade is perpendicular to the horizontal and at an oblique angle with a radial plane, and the external shape of the classifying turbine assembly is a conical table. The lower end of the classifying chamber is connected with a powder mill. An inner sealing ring and an outer sealing ring of an annular sealing groove plate at the lower end of the housing of the powder outlet chamber are matched with an inner sealing blade and an outer sealing blade of the upper plate to form a mazesealing. The lower part of the lower plate of the classifying turbine assembly is connected with a flow guiding cover in the shape of an inverted conical surface. The main shaft drives the classifying turbine assembly to rotate, and the wind power of the classifying blades makes the powder spiral upward, fine powder ascends to the powder outlet chamber, and coarse powder descends to return to thepowder mill. The superfine turbine classifier is advantaged by high precision of classifying, no short-connection powder, small loss of system wind power, and no influence upon efficiency of the powder mill.

Description

(1) Technical field [0001] The patent of the present invention relates to a non-metallic ore grinding and classifying equipment, especially an ultra-fine turbine classifier that can be directly connected with a mill and used without affecting the powder yield. (2) Background technology [0002] The most commonly used grinding and classifying equipment for non-metallic mines is the built-in classifier. The built-in classifier is to place the classifier directly above the grinding host. When the minerals are ground by the main machine and sent to the classifier above the main machine by the wind blown by the blower for sieving, the coarse ones will be thrown back into the main machine cavity to continue grinding, and the fine ones that meet the requirements will be imported into the cyclone collector through the pipeline for collection. for the finished product. The built-in classifier has ordinary type and ultra-fine type. Ordinary classifier is mainly composed of oil pool...

AI Technical Summary

Problems solved by technology

However, the turbines of existing turbine classifiers are mostly cylindrical, and the grading blades and sealing blades of the turbine are integrated. The width of the sealing blades and the grading blades is the same, so it is impossible to form a labyrinth seal, and it is still easy to cause short-circuit leakage of coarse powder. Difficult to apply to the classification of ultrafine powder

[0004] Although the combination of multiple turbine units can improve the classification fineness, the structure is complicated, the cost is high, and it is difficult to be widely used

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