Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Medium-speed coal mill

A coal mill and medium-speed technology, which is applied in the coal-fired power plant coal-grinding equipment field, can solve the problems of affecting coal mill output, reducing the service life of milling parts, increasing the external wear of grinding roller sleeves, etc., and achieving improvement Increased service life, increased grinding area, and reduced wear

Active Publication Date: 2017-06-27
CHANGCHUN POWER GENERATION EQUIP PLANT
View PDF18 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Affected by the structure of the grinding parts, the amount of raw coal in the grinding area is relatively small, which affects the output of the coal mill; at the same time, due to the large linear velocity difference between the outside of the roller sleeve and the grinding plate tile, the external wear, reducing the service life of the grinding components

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Medium-speed coal mill
  • Medium-speed coal mill
  • Medium-speed coal mill

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] refer to figure 1 , figure 2 , image 3 , the medium-speed coal mill of the present invention includes a main motor 1, a reducer 2, a lower frame body 3, a middle frame body 4, a separator 5, a grinding disc assembly 6, a grinding roller assembly 7, a pressurizing device 8, a pull rod mechanism 9, a base 10. Hydraulic system (not shown), slag discharge device (not shown), lubrication system (not shown). The improvement made is that the shape of the grinding roller sleeve 7-1 assembled by the grinding roller is tire-shaped and centripetal arc bowl-shaped (the grinding line is still arc-shaped), and the curvature radius of the middle diameter Rt of the grinding roller sleeve is taken as The pitch circle diameter Dj is 3000 times, and the running track of the grinding roller is consistent with the middle diameter of the grinding track of the grinding disc.

Embodiment 2

[0015] refer to figure 1 , figure 2 , image 3 , the medium-speed coal mill of the present invention includes a main motor 1, a reducer 2, a lower frame body 3, a middle frame body 4, a separator 5, a grinding disc assembly 6, a grinding roller assembly 7, a pressurizing device 8, a pull rod mechanism 9, a base 10. Hydraulic system (not shown), slag discharge device (not shown), lubrication system (not shown). The improvement made is that the shape of the grinding roller sleeve 7-1 assembled by the grinding roller is tire-shaped and centripetal arc bowl-shaped (the grinding line is still arc-shaped), and the curvature radius of the middle diameter Rt of the grinding roller sleeve is taken from The pitch circle diameter Dj is 2000 times, and the running track of the grinding roller is consistent with the middle diameter of the grinding track of the grinding disc.

Embodiment 3

[0017] refer to figure 1 , figure 2 , image 3 , the medium-speed coal mill of the present invention includes a main motor 1, a reducer 2, a lower frame body 3, a middle frame body 4, a separator 5, a grinding disc assembly 6, a grinding roller assembly 7, a pressurizing device 8, a pull rod mechanism 9, a base 10. Hydraulic system (not shown), slag discharge device (not shown), lubrication system (not shown). The improvement made is that the shape of the grinding roller sleeve 7-1 assembled by the grinding roller is tire-shaped and centripetal arc bowl-shaped (the grinding line is still arc-shaped), and the curvature radius of the middle diameter Rt of the grinding roller sleeve is taken from The pitch circle diameter Dj is 5000 times, and the running track of the grinding roller is consistent with the middle diameter of the grinding track of the grinding disc.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a medium-speed coal mill. The medium-speed coal mill comprises a motor, a speed reducer, a lower frame body, a middle frame body, a separator, grinding disc assemblies, grinding roller assemblies, a pressurizing device, a pull rod mechanism, a hydraulic system, a slag discharging device, a lubricating system and a foundation; and the improvement of the medium-speed coal mill is that the shape of grinding roller sleeves of grinding parts is in a centripetal arc bowl shape, the grinding molded lines are still arc-shaped, and the curvature radius of the intermediate diameter of the grinding roller sleeves is 0.5 times to infinity times of the pitch diameter of the mill. The medium-speed coal mill has the positive effects that the shape of the original roller sleeves is changed, and the cross section of the roller sleeves is changed from a tire shape into a centripetal arc kidney shape so that the grinding area of the roller sleeves and grinding disc tiles can be increased, the crushing efficiency of raw coal can be improved within unit time, and therefore the output of the coal mill can be improved; and arc-shaped grinding rollers rotate on the grinding disc tiles along the intermediate diameter of grinding rails of the grinding discs, and therefore the linear speed difference value of the grinding roller sleeves and the grinding disc tiles can be reduced, and the abrasion of the outer side parts of the roller sleeves can be reduced.

Description

technical field [0001] The invention belongs to the technical field of pulverizing and pulverizing equipment, and in particular relates to coal grinding equipment for coal-fired thermal power plants. Background technique [0002] Medium-speed coal mills are widely used in thermal power plants and other coal-fired enterprises, including main motor, reducer, lower frame body, middle frame body, separator, grinding disc assembly, grinding roller assembly, pressurizing device, tie rod mechanism, hydraulic system , slag discharge device, lubrication system, foundation and other components. When the equipment is running, the main motor drives the grinding disc fixed on the reducer to rotate through the coupling, and the grinding disc shoe is fixed on the grinding disc. Under the action of friction, the grinding disc drives the grinding roller to rotate. The raw coal that falls on the grinding tile through the coal falling pipe of the separator is ground by the grinding roller, an...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): B02C15/00B02C23/00
Inventor 戴永君袁鸿飞张喜春孟凡荣赵家辉孙英臣戚世岩徐春梅王立芳孙权王赟翔
Owner CHANGCHUN POWER GENERATION EQUIP PLANT
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com