Efficient grinding mechanism for vertical roller mill

Abstract

The present invention relates to an efficient grinding mechanism for a vertical roller mill. The efficient grinding mechanism comprises a drive mechanism, wherein the drive mechanism is connected with a grinding table, the upper part of the grinding table is provided with a feeding tube, a plurality of grinding rollers are arranged on the circumferential edge of the grinding table, the grinding rollers are divided into large grinding rollers and small grinding rollers, and the large grinding rollers and the small grinding rollers are arranged on the circumferential edge of the grinding table in a staggered manner. The present invention provides an efficient grinding mechanism for a vertical roller mill, wherein the efficient grinding mechanism has characteristics of high grinding efficiency, simple structure and easy maintenance.

Description

technical field [0001] The invention relates to a high-efficiency grinding mechanism for a vertical roller mill, belonging to the field of high-efficiency grinding mechanisms. Background technique [0002] The vertical roller mill integrates the functions of grinding, drying, classification (powder selection) and conveying, and has the advantages of high efficiency, low energy consumption, low abrasion, high operation rate, compact structure, small site and space occupation, low noise, The fineness of the product is easy to adjust and other obvious advantages, and it is more and more widely used in the grinding and ultrafine grinding of cement (raw meal, coal, clinker), metallurgical slag, materials, chemical industry and other materials. [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 is a large block of material,...

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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 lump materials, the upper layer of larger material blocks will turn over and 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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