Powder separating machine for cement raw material, clinker and slag vertical type roller mill

Abstract

The invention provides a powder concentrator of a vertical roller mill used for cement material, clinkers and slags. The main structure of the body of the powder concentrator consists of an upper part housing (9), a middle part housing (7), a lower part housing (3) and a feed downspouting (11) at the outside as well as a main shaft (10), a supporting rod 8 of the outer cylinder of the main shaft, a rotor (6), a lower prick ring (4) of the rotor and a thick grain material collecting prick (1) at the inside. The powder concentrator has the advantages of good dispersing effect, high grading rate and grading precision, wide grading granularity range, small device resistance, being easy to realize maximazation, compact structure, small machine body size, convenient manufacture and mounting, stable operation, small vane abrasion and high performance price ratio.

Description

technical field [0001] The invention belongs to the technical field of mining machinery, and in particular relates to a powder separator for vertical roller mills for cement raw materials, clinker and slag. Background technique [0002] The finished material of the vertical roller mill is obtained through the classification of the classifier, so it is necessary to study what type of classifier can be used to produce the most effective classification effect. [0003] Looking at the main structural parameters of powder classifiers in the past, first of all, the guide vane of the stator part needs to have a radial angle with respect to the center line of the powder classifier. The composition of the material and the airflow speed change, which must be determined through a test run with the material. However, most of the current roller vertical mill separators have a non-adjustable stator angle, which affects the long-term stable operation of the system; secondly, the current po...

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Problems solved by technology

[0003] Looking at the main structural parameters of powder classifiers in the past, first of all, the guide vane of the stator part needs to have a radial angle with respect to the center line of the powder classifier. The composition of the material and the airflow speed change, which must be determined through a test run with the material. However, most of the current roller vertical mill separators have a non-adjustable stator angle, which affects the long-term stable operation of the system; secondly, the current powder separator The plate structure of the guide vane of the machine makes the front and rear widths of the flow section inconsistent, and the resistance of the powder concentrator body increases, resulting in a larger system fan, which is not conducive to the macro goal of energy saving and consumption reduction; Grading force field, but the shape of the rotor varies greatly, the width and height of the grading area are unreasonable, etc., can not form a stable pressure difference and a stable air velocity in the grading area, so it is also impossible to form a stable grading force field, so that it cannot become a The real high-efficiency powder separator

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