Spherical graphite superfine classifier

Abstract

The invention discloses a spherical graphite superfine classifier. The spherical graphite superfine classifier comprises a classifier and is characterized in that a secondary air inlet is communicated with a material inlet pipe by a branch pipe and an air valve is arranged on the branch pipe. According to the spherical graphite superfine classifier, the technical problem of incontrollable secondary air inlet caused by inconvenient control of atmospheric pressure due to direct introduction of secondary inlet air from the atmosphere from a lower barrel body in the prior art is solved; air is introduced by the material inlet pipe; the material inlet pipe and the secondary air inlet have the same atmospheric pressure; the air volume is adjusted by the air valve so as to adjust the wind speed; the air flow pressure loss of a draught fan cannot be influenced; the air volume of other equipment directly connected with the lower barrel body also cannot be influenced; and the quality stability of a superfine grinding and classifying system is improved. In addition, as the pressure loss in a secondary air inlet cavity body is small, the wind pressure between the grinding process and the classifying process can be conveniently distributed and adjusted; and meanwhile, as the pressure loss in a secondary air inlet cavity is small, the grinding load and the classifying load can be greatly reduced, and the grinding and classifying energy consumption is reduced.

Description

technical field [0001] The invention relates to a classifying device for powder materials, in particular to a spherical graphite ultrafine classifier. Background technique [0002] The graphite shaping machine system includes a cyclone vortex pulverizer, an ultrafine classifier, a cyclone collector, a pulse dust collector, a high-pressure fan and an electric control cabinet. The material transportation of the ultra-fine classifier is all completed by the negative pressure suction of the high-pressure induced draft fan. Adjusting the pressure distribution of each part of the graphite shaping machine plays an important role in crushing, grading, and aggregate stability, and affects product quality, yield, and energy consumption. . The existing ultrafine classifier is a forced classifier with a secondary air inlet and a vertically installed large impeller rotor. When working, the material enters from the lower cylinder body through the feed pipe under the action of the induce...

AI Technical Summary

Problems solved by technology

In the ultra-fine classification of light specific gravity materials, the secondary air intake volume is small, and the classification efficiency is low. When the secondary air intake volume is large, the primary air intake volume is affected, resulting in reduced classification accuracy.

The secondary air intake has a serious impact on the classification efficiency and classification accuracy. During debugging, it is easy to cause low material classification yield or classification quality problems

[0003] Chinese patent 200520080497.9 discloses a powder classifier, and Chinese patent 98226494.1 also discloses a powder classifier, but neither solves the technical problem that the secondary air intake seriously affects the classification efficiency and classification accuracy

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