A powder classification system

Abstract

The invention relates to a powder classification system, which comprises a sequentially connected hopper (101), a screw feeder (102), an airflow impact dispersion pretreatment device (100), a multi-stage fluidized auxiliary screening device (200), a high-efficiency A cyclone collection device (300) and an exhaust gas separation and purification device (400). Compared with the prior art, the present invention can realize the powder containing static electricity and easy agglomeration with a wide particle size range through the rational configuration of impact dispersion pretreatment device, powder static removal device, multi-stage fluidization auxiliary screening device and high-efficiency cyclone collection device. High-efficiency and high-precision controllable multi-level grading of the body.

Description

technical field [0001] The invention relates to a powder classifying device, in particular to a classifying system for easily agglomerated organic polymer powder. Background technique [0002] Powder materials have been widely used in various technical fields at present. With the development of science and technology, the requirements for the powder used in the application field are getting higher and higher, such as high purity, functionalization, micronization, etc., the particle size of the powder The size and shape have also made many requirements in many fields. It is of great significance to screen the powder according to the particle size and select the powder with the appropriate particle size. Powders of different substances may have different properties, but for powders of the same substance, differences in particle size distribution will also lead to differences in properties, especially ultrafine powders, and the particle size distribution of powders To a certai...

AI Technical Summary

Problems solved by technology

Powders of different substances may have different properties, but for powders of the same substance, differences in particle size distribution will also lead to differences in properties, especially ultrafine powders, and the particle size distribution of powders To a certain extent, it determines its properties and uses. Therefore, there is an urgent need for powder classification equipment that can finely classify powders.

[0003] At present, the grading of easily agglomerated organic polymer powders mostly adopts the vibrating sieving grading process. Due to the agglomeration of fine particles, electrostatic adsorption and the limitation of sieve making, the sieving efficiency of fine particles is too low and the accuracy is not good. Reliable, when sieving, objects, charged objects and attachments that are similar to the sieve aperture may block the sieve hole, and there are problems such as the lower limit of sieving and low efficiency.

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