A roller-type medium-speed coal mill device

Abstract

The invention provides a medium-speed roller coal mill device, comprising a feeding pipe, a transmission box, an air inlet pipe, a main motor shaft, a separator, stator blades, a movable rotor, a movable rotor limit bearing, an indicating plate, an outlet transfer pipe, a transmission shaft and a transmission case, wherein a separator part is composed of a transmission motor and the feeding pipe,and a return material discharge pipe is connected with the lower part of a material returning cone. Sampling holes are distributed in the body of the device and are cooperated with a Pitot tube, a wind speed sensor, etc. for detecting the distribution of internal wind speed and wind pressure. The whole device is connected and fixed by bolts, which is convenient for replacing and installing components so as to test the structural parameters of different mills. A servo motor is adopted, and the servo motor has a wide adjustment range and can cover the speed adjustment range of a combined separator. The device is integrally made of organic glass, which facilitates the detection of internal flow fields and particle distribution by using non-destructive testing means. The whole device has the advantages of simple structure, small processing difficulty, economical price and convenient disassembling, research on structural parameters can be realized by replacing components and the like, so convenience is provided for research on the separation mechanism of the mill and optimization of process parameters.

Description

technical field [0001] The invention relates to a coal mill device, in particular to a roller-type medium-speed coal mill system suitable for studying the problems of high energy consumption and environmental pollution in the coal utilization process. Background technique [0002] China's resource endowment characteristics of "poor in oil, rich in coal, and low in gas" have enabled coal to occupy a dominant position in China's energy consumption for a long time. The problems of high energy consumption and environmental pollution in the process of coal utilization have received widespread attention. The inhalable particulate matter, sulfur oxides, and nitrogen oxides produced by charcoal combustion are one of the main causes of air pollution in my country. Although the utilization of coal has the defects of high energy consumption and high pollution, its dominant position in the primary energy structure is difficult to change in the short term. Data show that in 2016, my cou...

AI Technical Summary

Problems solved by technology

However, for now, the technical level of domestic coal-fired power generation units still needs to be improved.

[0004] The internal space of the coal mill is closed, the structure is complex, and there are many parameters; the sampling of large mills is inconvenient, the transformation is difficult, and the experimental research is difficult

Images