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

Control method of steel ball coal mill material level

The technology of a steel ball coal mill and a control method, which is applied to grain processing and other directions, can solve the problems of low grinding output and high power consumption for pulverizing, and achieve the effects of large grinding output and reducing power consumption for pulverizing.

Active Publication Date: 2018-07-03
哈尔滨中远控制工程有限公司
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0022] The purpose of the present invention is to solve the problem that the material level of the existing steel ball coal mill pulverization system cannot be kept at the maximum grinding output point, the grinding output is low, and the power consumption of pulverization is high, so as to provide a method for controlling the material level of the steel ball coal mill

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
  • Control method of steel ball coal mill material level
  • Control method of steel ball coal mill material level
  • Control method of steel ball coal mill material level

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0042] Specific implementation mode one: combine figure 2 Specifically explain this embodiment, the control method of the material level of the steel ball coal mill described in this embodiment, the method is to use the coal mill current (abbreviated as the mill current) as the controlled quantity, search it online, and find that the grinding output is the largest The current value of the coal mill at that time is used as the given value of the coal mill current. By adjusting the speed of the coal mill or the amount of coal supplied, the current value of the coal mill can track the given value of the coal mill current to realize the steel mill current value. Ball mill material level control.

[0043] The advantage of choosing the mill current as the controlled quantity is: the mill current is only related to the material level of the coal mill, the quality of the steel ball and the coal quality, and is not interfered by factors other than the coal mill. The signal is stable, ...

specific Embodiment approach 2

[0046] Specific implementation mode two: combination image 3 Describe this embodiment in detail. This embodiment is a further description of the method for controlling the material level of the steel ball coal mill described in Embodiment 1. In this embodiment, the maximum current of the coal mill is affected by the quality of the steel ball and the quality of the coal. , needs to be searched frequently to obtain the given value of the coal mill current. This search process is also called the mill current optimization process. The optimization process of the given value of grinding current can be divided into manual optimization and automatic optimization. Manual optimization is that the fireman manually adjusts the operation of the pulverizing system, finds and crosses the maximum value of the milling current, and after the δ value drops, manually sets the given value of the milling current, and puts into automatic coal feeding. The automatic optimization is to complete the...

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 control method for a material level of a steel ball coal mill, relates to the technical field of controlling the material level of the steel ball coal mill and aims to solve the problems that the material level of a powdering system of the existing steel ball coal mill cannot be kept at the maximum grinding power point, the grinding power is low and the power consumption of powdering is high. The method disclosed by the invention comprises the following steps: searching for a current value of the coal mill at the maximum grinding power; adjusting the speed or coal feed rate of the coal mill by taking the current value as a given current value of the coal mill so that the current value of the coal mill tracks the given current value of the coal mill and the control on the material level of the steel ball coal mill is realized. The method disclosed by the invention is suitable for controlling the material level of the steel ball coal mill.

Description

technical field [0001] The invention relates to the technical field of controlling the material level of a steel ball coal mill. Background technique [0002] The steel ball coal mill (hereinafter referred to as the coal mill) is an important auxiliary equipment of the medium storage pulverized coal boiler, which is used to grind the raw coal into a certain fineness of pulverized coal and store it in the pulverized coal bunker. When the coal mill is running, the grinding cylinder rotates, and the steel balls in the grinding cylinder are brought to a certain height by the inner wall and then fall freely, hitting the coal stored in the bucket, and the stored coal is crushed and ground into coal powder. The pulverized coal is separated from the coal mill by the high-speed ventilation of the pulverizing system, and after being separated by the coarse powder separator, fine powder separator and cyclone separator, it falls into the pulverized coal bin for storage. The process of ...

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 Patents(China)
IPC IPC(8): B02C25/00
CPCB02C25/00
Inventor 柴庆宣
Owner 哈尔滨中远控制工程有限公司
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