Bowl-type medium speed coal mill

A coal mill and medium-speed technology, which is applied in the field of bowl-type medium-speed coal mills, can solve the problems of coal mill shutdown, inconvenient maintenance, and high external dimensions, and achieve reduced vibration, reduced failure rate, and improved reliability Effect

Active Publication Date: 2008-08-06
上海电气上重碾磨特装设备有限公司 +1
View PDF10 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the air pressure fluctuates or fails, the valve will automatically close under the action of gravity, which will cause the entire coal mill to stop due to failure
[0007] c) The structure is complex, maintenance is inconvenient, and the overall size is high, which affects the overall layout of the 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
  • Bowl-type medium speed coal mill
  • Bowl-type medium speed coal mill
  • Bowl-type medium speed coal mill

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] Such as figure 2 As shown, the bowl-type medium-speed coal mill of the present invention mainly includes: coal drop pipe 1, separator top cover 3, inner cone 13, separator body 4, impeller device 5, reduction box 6, discharge valve device 2, folding Door adjustment device 15, venturi tube 14, spring variable loading device 12, side body device 10, grinding roller device 11, bowl grinding device 9, sealed air header 8, stone coal discharge port 7, multi-outlet device 16, etc. .

[0017] The reduction box 6 is composed of planetary gears, has an appropriate reduction ratio, and is directly driven by the electric motor. The reduction box 6 is directly connected with the grinding bowl device 9 to make the grinding bowl reach the required rotating speed. The side body device 10 is equipped with a liner, forms an air inlet around the grinding bowl, and supports the separator body 4, and the hot air used for drying and transporting coal powder is introduced through the air ...

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 bowl-type medium speed coal mill includes a coal shoot, a separator cap, an inner cone, a separator, a vane wheel unit, a speed reducer, an exhaust valve unit, a door regulator, a Venturi, a side machine body, a milling roll unit, a milling bowl unit, a sealed air manifold and a coal gangue exhaust port. The variable loading spring unit for controlling the loading force is fixed on the separator and connected via pull rod screw to the milling roll unit. The bowl-type medium speed coal mill has high reliability.

Description

technical field [0001] The invention relates to a bowl-type medium-speed coal pulverizer used in a boiler pulverization system of a coal-fired thermal power plant. Background technique [0002] The structure of the existing bowl-type medium-speed coal mill is as follows: figure 1 shown. It mainly consists of coal drop pipe, separator top cover, inner cone, separator body, impeller device, planetary gear reducer, discharge valve device, folding door adjustment device, Venturi pipe, side body device, bowl grinding device, It is composed of sealed air header, pebble coal discharge port and other components. [0003] The grinding roller of this coal mill adopts a hydraulic variable loading device 17 . Although theoretically speaking, this will automatically change the loading force of the grinding roller with the coal feeding rate; at the same time, since the loading force changes linearly with the coal feeding rate, it can also reduce power consumption; however, in actual op...

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): B02C15/04B02C23/08
Inventor 叶志强沈光明吴正华
Owner 上海电气上重碾磨特装设备有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap