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Coal mill for thermal power plant

A technology for a coal mill and a thermal power plant, applied in the field of pulverized coal production equipment, can solve problems such as low efficiency and poor grinding quality, and achieve the effects of uniform pulverized coal specifications, improved quality, and improved production efficiency

Inactive Publication Date: 2021-01-01
陕西榆林能源集团横山煤电有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the defects of poor grinding quality and low efficiency existing in the prior art, the invention discloses a coal mill for thermal power plants, which realizes uninterrupted grinding production of pulverized coal and greatly improves the production efficiency of pulverized coal , at the same time, the pulverized coal produced by it has uniform specifications and high quality pulverized coal

Method used

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  • Coal mill for thermal power plant
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  • Coal mill for thermal power plant

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Embodiment approach 1

[0027] This embodiment, as the basic embodiment of the present invention, discloses a coal mill for thermal power plants, the specific structure is as follows figure 1 As shown, it includes an upper box body 1 and a lower box body 2, the upper box body 1 and the lower box body 2 are fastened and connected by a flange, and the top of the upper box body 1 and the lower box body 2 The bottom is respectively provided with a feed pipe 3 and a discharge pipe 4. The upper box body 1 is rotatably connected to a rotating shaft 5 through a rolling bearing. A grinding roller 7 is fixedly arranged on the rotating shaft 5. One end of the rotating shaft 5 extends into the upper box. body 1, and is connected with the rotating motor 6 fixed outside the upper box body 1 through the transmission gear 12 to achieve power connection, the lower box body 2 is provided with a grinding disc 8 adapted to the grinding roller 7, wherein the lower box body Corresponding threaded holes 16 are provided bet...

Embodiment approach 2

[0030] This embodiment, as a preferred embodiment of the present invention, discloses a coal mill for thermal power plants, the specific structure is as follows image 3 As shown, it includes an upper box body 1 and a lower box body 2 connected to each other through a flange, the top of the upper box body 1 is fixedly provided with a feed pipe 3, and the bottom of the lower box body 2 is provided with a discharge pipe 4; One end of the feeding pipe 3 is located outside the upper box body 1, and the other end is inserted into the upper box body 1. The upper part of the upper box body 1 rotates through rolling bearings and has two crushing teeth 11, and the transmission gear 12 passes between the two crushing teeth 11. The power connection is realized; at the same time, the lower end of the crushing tooth 11 is also rotatably connected with two rotating shafts 5 through rolling bearings, and the grinding roller 7 is fixedly arranged on the two rotating shafts 5; the power connect...

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Abstract

The invention discloses a coal mill for a thermal power plant. The coal mill comprises an upper box body and a lower box body, wherein a feeding pipe is arranged on the upper box body, discharging pipes are arranged on the lower box body, rotating shafts are in power connection with the inner part of the upper box body through a rotating motor, grinding rollers are arranged on the rotating shafts,and besides, a grinding disc matched with the corresponding grinding roller is arranged in the lower box body; and a grinding channel is formed between each grinding roller and the corresponding grinding disc, the inlet end of each grinding channel is large, the outlet end of the corresponding grinding channel is small, and the particle size of the outlet end is 5%-10% larger than that of qualified pulverized coal. Large-particle pulverized coal is ground and crushed through cooperation of the gradually-convergent grinding channels and the grinding rollers, besides, due to the arrangement ofthe width of the outlet end of each grinding channel, it is guaranteed that only qualified pulverized coal can be discharged, and therefore, the grinding quality of the pulverized coal is greatly improved. Besides, continuous grinding and continuous discharging of the pulverized coal are achieved, so that the grinding production efficiency of the pulverized coal can be greatly improved.

Description

technical field [0001] The invention relates to the technical field of coal powder production equipment, in particular to a coal pulverizer for a thermal power plant. Background technique [0002] A coal mill is a machine that breaks coal and grinds it into coal powder. It is an important auxiliary equipment for pulverized coal furnaces. Coal is ground into coal powder in the coal mill, mainly through crushing, crushing and grinding. Three ways; the coal mill in the prior art is generally an intermittent production process, and its production efficiency is limited; at the same time, since the pulverized coal is put in at the same time, and then discharged together after the grinding, it is inevitable that the pulverized coal There will be a large amount of unqualified pulverized coal, which greatly affects the quality of pulverized coal. Contents of the invention [0003] Aiming at the defects of poor grinding quality and low efficiency existing in the prior art, the inve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B02C4/02B02C4/08B02C4/30B02C4/40B02C4/28B02C21/00
CPCB02C4/02B02C4/08B02C4/28B02C4/30B02C4/40B02C21/00
Inventor 朱玉龙刘健孙新峰张宏旭
Owner 陕西榆林能源集团横山煤电有限公司