Multi-rotor dynamic powder sorting machine, powder sorting method and application

Abstract

The invention discloses a multi-rotor dynamic powder sorting machine, a powder sorting method and application, and belongs to the technical field of inorganic non-metallic material grinding. A powdersorting cylinder is included; two or more driving devices are evenly arranged on the top of the powder sorting cylinder in the circumferential direction; a rotor is arranged below each driving device;each driving device is connected to the corresponding rotor through a rotating device; all the rotors are distributed in the same horizontal plane; a powder sorting hopper is arranged below each rotor; a counter-attack cone is arranged below each powder sorting hopper; an air inlet pipe is arranged below each counter-attack cone; a gap is formed between each air inlet pipe and the powder sortingcylinder; medium and coarse powder outlets are formed in the positions, close to air inlets, of the lower end of the powder sorting cylinder, the air inlets are formed in the lower ends of the air inlet pipes; and air outlets are formed in the positions, at the upper ends of the rotors, of the powder sorting cylinder. The multi-rotor dynamic powder sorting machine has the advantage of adjusting the gradation and capacity of finished products while the working efficiency is improved, and the multi-rotor dynamic powder sorting machine is a new high-efficiency powder sorting machine suitable forthe final powder grinding system of a roller press.

Description

technical field [0001] The invention belongs to the technical field of grinding of inorganic non-metallic materials, and in particular relates to a multi-rotor dynamic powder separator, a powder separator method and its application. Background technique [0002] In industries such as electric power, steel, cement and energy, powder separators are commonly used powder classification equipment, through which powders can be sorted into qualified powders and unqualified powders. At present, the commonly used separators are single-rotor or double-rotor separators. Taking the double-rotor powder separator as an example, it generally adopts power rotation classification in the process of powder selection and classification. The powder falls from the feed pipe onto the withdrawal tray, and the falling powder is scattered to the surroundings by the inertial centrifugal force on the one hand, and at the same time, it is lifted upward by the circulating wind from the air inlet of the ...

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Problems solved by technology

[0003] However, in the existing single-rotor or double-rotor powder separator, the fine material is finally output by a rotor on the top, and the separation efficiency is limited; in addition, the existing double-rotor powder separator uses a motor on the top of the equipment to drive the material. The disk, upper and lower rotors rotate for powder selection, which not only consumes electric energy, but also has a large vibration; in addition, the shape of the rotor is cylindrical, and the spacing of the sorting blades is consistent, resulting in a narrow particle size distribution of the sorted materials, which ultimately affects the working performance of the materials; At the same time, limited by the number and distribution of rotors, the speed and shape of rotors cannot be set differently

[0004] Furthermore, for the classifier of the final grinding system of the cement roller press, the gradation of the finished cement particles produced is unreasonable, and the roundness of the particle shape is poor, resulting in a large water demand and a short setting time, which affects the durability of the cement. properties, and affect the use of cement

Therefore, the final grinding system of cement roller press has not been widely promoted and widely used until now.

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