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Grading grinding mechanism of medium speed coal mill

A technology of grinding mechanism and coal mill, which is applied in grain processing and other directions, can solve the problems of large volume, occupying effective space in power plants, and low grinding efficiency.

Inactive Publication Date: 2015-09-09
王泽华
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Among the existing power plant coal mills, there are international and domestic coal mills. There are various coal mills, but none of these methods can strictly control the particle size of coal powder. The coal powder must be separated by a separator before reaching the boiler. The use requirements, and the grinding efficiency is low, the machine body is very heavy, the volume is also very large, it takes up a lot of effective space in the power plant, the installation and maintenance are difficult, and the total cost is very high.

Method used

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  • Grading grinding mechanism of medium speed coal mill
  • Grading grinding mechanism of medium speed coal mill
  • Grading grinding mechanism of medium speed coal mill

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Embodiment Construction

[0018] The present invention will be described in further detail below according to the accompanying drawings.

[0019] Such as Figure 5 As shown, the classification and grinding mechanism of the medium-speed coal mill includes two parts, the top plate and the bottom plate, 1 is the top plate, and 2 is the bottom plate.

[0020] Such as Figure 5 and as Figure 6 As shown, a step-by-step adjustable and limited space for graded grinding is formed between the top and the bottom plate.

[0021] Such as Figure 5 As shown in 3 and 4, the structure of the grinding end (head) of the top plate and the bottom plate forms a limited grinding space together.

[0022] The shape and structure of the top plate and chassis can have many changes, such as Figure 5 and as Figure 6 Two different forms of the structure are shown.

[0023] The grinding surfaces (heads) of the top and chassis can be flat, complex curved surfaces with angles, or a combination of flat and curved surfaces. T...

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Abstract

The invention relates to a grading grinding mechanism of a medium speed coal mill. The grinding mechanism comprises a top disc and a bottom disc. The mechanism has a reasonable structure, an adjustable and limited grinding space successively decreasing step by step is formed between the top disc and the bottom disc, and raw coal from large granules to small granules can be sequentially ground in a grading and successive manner. The large granules are ground in a wide grinding space, coal with small granularity can enter a next grade grinding space and is ground, and the small granule raw coal directly passes through a gap, enters a next stage small grinding space and is ground, so the coal granules with large and small particle sizes can be simultaneously ground. The grading grinding structure greatly improves the grinding efficiency, and coal dust finally obtained through grinding accords with combustion requirements, can be directly sent to a boiler without separation and is combusted, so a large amount of cost is saved.

Description

technical field [0001] The invention relates to a brand-new grinding mechanism of a medium-speed coal pulverizer, in particular to a graded grinding mechanism of a medium-speed coal pulverizer, which can be used for high-speed, medium-speed and low-speed grinding of coal powder, and can also be used for grinding coal slurry. Background technique [0002] Among the existing power plant coal mills, there are international and domestic coal mills. There are various coal mills, but none of these methods can strictly control the particle size of coal powder. The coal powder must be separated by a separator before reaching the boiler. The use requirements are low, and the grinding efficiency is low. The machine body is very heavy and the volume is very large, which takes up a lot of effective space in the power plant. It is difficult to install and maintain, and the total cost is very high. Contents of the invention [0003] The purpose of the present invention is to provide a g...

Claims

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Application Information

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IPC IPC(8): B02C2/00
Inventor 王泽华
Owner 王泽华
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