Laterally tilted feeding vertical-type grading powder-grinding machine

Abstract

The invention discloses a laterally tilted feeding vertical-type classifying powder-grinding machine including a secondary draught fan, a classifier, a grinding body, a grinding disc, a speed reducer and a motor which are sequentially arranged from top to bottom; a part, located above the grinding disc, in the grinding body is provided with a powder sieving cover body, and a plurality of powder sieving mesh holes are arranged near a position close to the top position of the powder sieving cover body; the grinding disc is provided with a coarse grinding roller and a fine grinding roller along the circumferential positions with different distances, wherein the coarse grinding roller is arranged near the edge position of the grinding disc, moreover, a tilted feeding device is arranged in the top direction, and a feed port of the tilted feeding device is arranged at a position directly facing the upper side position of the coarse grinding roller; the fine grinding roller is arranged at a position close to the center position of the grinding disc; a primary cyclone fan is arranged at a position directly facing the mesh hole position of the powder sieving cover body. The vertical-type classifying powder-grinding machine disclosed by the invention can perform classifying powder pressing, also performs classifying powder discharge, and has the advantages of uniform obtained material powder, simple whole structure, easy operation, and good use performance.

Description

Technical field [0001] The invention relates to the technical field of pulverizers, in particular to a vertical classifying pulverizer with inclined side feeding. Background technique [0002] The vertical roller mill integrates grinding, drying, grading (powder sorting) and conveying functions. It has high efficiency, low energy consumption, low abrasion, high operation rate, compact structure, small footprint and space, low noise, The obvious advantages of easy adjustment of product fineness, etc., are more and more widely used in the grinding and ultra-fine grinding of materials in industries such as cement (raw meal, coal, clinker), metallurgical slag, materials, and chemical industries. [0003] The grinding rollers of traditional vertical roller mills are all large rollers of the same size. Each roller is responsible for the functions of fine crushing, compaction and grinding. Due to the large diameter of the rollers, the spherical rollers are loosely crushed. When the mater...

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Problems solved by technology

[0003] The grinding rollers of the traditional vertical roller mill are large rollers of the same size, and each grinding roller undertakes the functions of fine crushing, compaction and grinding. When there are lumpy materials, the upper layer of larger material blocks will appear to leave the grinding area, and the grinding roller only crushes, compacts and grinds the lower layer of smaller materials, so the grinding efficiency is low

[0004] Traditional groove-shaped grinding discs can only be surfacing for wear-resistant treatment. Not only is the manufacturing complicated, the production cycle is long, and the requirements for the material of the grinding disc are also high. Because the surface of the traditional grinding disc needs to be surfacing with a wear-resistant layer, the grinding disc must be cast Steel, the casting process is complicated and difficult (the fluidity of molten steel is poor during casting, and the production of large steel castings is difficult)

However, the machining of the grinding disc of the groove is complicated

[0005] At present, the grinding mechanisms of domestic vertical roller mills are mainly spherical grinding rollers and groove-shaped grinding discs, which are complex in shape, difficult to manufacture and high in cost, difficult and expensive to repair after wear, and low in grinding efficiency.

At the same time, due to the difficulty in repairing the grinding mechanism after wear and tear, the repair time is long, resulting in a low operating rate of the vertical roller mill

These shortcomings have affected the operating rate of the entire cement production line, affecting the operating rate and benefits of the cement production line

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