Cylindrical milling rotor with quick grading and working method thereof

Abstract

The invention discloses a cylindrical milling rotor with quick grading and a working method thereof. The cylindrical milling rotor comprises powering discs, hammer cutting tools and a cylindrical milling cylinder. The milling cylinder is at least composed of annular shell parts and centrifugation guide parts. The centrifugation guide parts play a role of guiding and backflowing to materials. The annular shell parts are distributed in the axial direction of the milling cylinder. The centrifugation guide parts are arranged between the annular shell parts in the circumferential direction of the milling cylinder. A backflow channel of coarse particles is arranged between the annular shell parts. During working hours, the cylindrical milling rotor rotates at a high speed and forms a high centrifugal field, the coarse particles separated by grading impellers are captured by the centrifugal field generated by rotation of the cylindrical milling rotor, and the coarse particles return to a milling area through the backflow channel. The coarse particles are separated quickly and efficiently, fine particles are sorted efficiently and accurately, and grading efficiency is improved.

Description

technical field [0001] The invention relates to the field of pulverizers, in particular to a cylindrical pulverizing rotor capable of rapid classification and a working method thereof. Background technique [0002] The milling rotors of the milling machines in the prior art are mostly disc-shaped, such as the milling machines with the application number 2015206070065, the application number 201320861999X, and the application number 2015210542529; The ring gear, the grading impeller, and the static material guide sleeve set outside the grading impeller, when working, the grinding disc drives the hammer knife to rotate at a high speed, and the material is ground in the grinding area composed of the hammer knife and the ring gear. Under the action of the wind, it enters the classification area composed of the classification impeller and the material guide sleeve for classification. The classification impeller rotates at a high speed, and the tangential velocity of the airflow b...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a cylindrical milling rotor capable of rapid classification, which can not only expand the distribution of hammer blades along the axial direction of the milling rotor, but also make the material particles be ground and transported in the expanded milling area, and solve the problem of material formation. Circulation, the problem of excessive power consumption, can also quickly and efficiently separate the coarse particle materials separated by the grading impeller from the grading area, and return to the milling area for circulation and regrinding, so as to solve the problem of slow material reflux, easy agglomeration, and sticking to the wall. Inability to recirculate quickly, resulting in low classification efficiency

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