Fine powder winnowing machine

Abstract

The invention discloses a fine powder winnowing machine. The fine powder winnowing machine at least comprises a material passage, a gas passage and a rotating disc, wherein materials go downward in the material passage, air currents rise in the gas passage, and the rotating disc is used for throwing the materials of the material passage to the gas passage. According to the fine powder winnowing machine, the materials are coarsely ground at first, then materials with qualified particles and materials with particles larger than the qualified particles are separated by utilizing the fine powder winnowing machine, fine powder meeting the particle requirement is extracted, and the materials with the particles larger than the qualified particles are ground for the second time, so that the efficiency of a pulverizer is greatly improved and the energy consumption is reduced.

Description

technical field [0001] The invention relates to the technical field of winnowing equipment, in particular to a fine powder winnowing machine. Background technique [0002] At present, the current food, building materials, chemical industry, metallurgy, refractory and other industries have an increasing demand for various fine powder materials, and there are many types of equipment for processing fine powder materials, such as ball mills, jet mills, and Raymond mills that are commonly used at present. , Ultrafine Pulverizer, Roller Pulverizer, Claw Pulverizer and various Hammer Pulverizers, etc. Raymond mills and superfine pulverizers have low crushing efficiency and high energy consumption due to rolling crushing; others such as hammer mills and claw pulverizers have high crushing efficiency, but due to the addition of sieves, the aperture is small and over-crushing, It is also low in efficiency and high in energy consumption. A common defect of these pulverizers is low pu...

AI Technical Summary

Problems solved by technology

Raymond mills and superfine pulverizers have low crushing efficiency and high energy consumption due to rolling crushing; others such as hammer mills and claw pulverizers have high crushing efficiency, but due to the addition of sieves, the aperture is small and over-crushing, Also low efficiency and high energy consumption

A common defect of these pulverizers is low pulverization efficiency and high energy consumption

[0003] It can be known from the above discussion that the main reason for the inefficiency of the above-mentioned material crushing device in the prior art is that the crushing device and the screening device are designed as one, and the crushing and screening device are not separated. When they are separated through the sieve together, large materials are easy to block the sieve holes, and the separation efficiency of coarse and fine powder is low, so that the materials that reach the crushing fineness cannot be separated in time and over-grinded, which leads to the low crushing rate of the above-mentioned device.

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