Crushing device for impact type jet mill

Abstract

The invention discloses a crushing device for an impact type jet mill. The crushing device for the impact type jet mill comprises a crushing chamber, a target piece and an air source, wherein the crushing chamber comprises a feeding hole, a discharging hole and an air inlet; the discharging hole is formed in the top of the crushing chamber; the feeding hole is formed in the top of the crushing chamber and is positioned in the outer side of the discharging hole; the air inlet is formed in the side face of the crushing chamber; the target piece is used for receiving impact of materials and crushing the materials; and the air source supplies compressed air to the material to impact the target piece. According to the crushing device for the impact type jet mill provided by the invention, the target piece is arranged in the crushing chamber, and materials are driven by compressed air to impact and rub against each other so as to be crushed and then rush to the target piece to be crushed again, so that the unit time yield of ultrafine powder and fine powder is remarkably increased, and the crushed materials are regular in shape.

Description

technical field [0001] The invention relates to the technical field of material crushing, in particular to a crushing device for an impact jet mill. Background technique [0002] The jet mill is different from other mills, it is under the action of high-speed airflow, the material passes through the collision between its own particles, the airflow impacts and shears the material, and the impact, friction and shear of the material and other parts make the material pulverize . Therefore, the average particle size of the material after jet milling is finer, the particle size distribution is narrower, the particle surface is smooth, the particle shape is regular, the purity is high, the activity is high, and the dispersion is good; therefore, it is widely used in new materials, heat-sensitive materials and daily products. crushing treatment. As the core component of the jet mill, the crushing performance of the mill device will directly determine the crushing effect of the jet...

AI Technical Summary

Problems solved by technology

[0003] It can be seen from the above that in the prior art, the jet mill mainly achieves the purpose of material crushing through the mutual impact, friction and shearing of particles. The particle size of this product is difficult to reach the micron level, and the powder below 10 microns The overall productivity drops sharply, and the processing cost increases sharply

With the development of society and the increasing market demand for ultra-fine and micro-sized powders, the particle size crushed by this material pulverizer obviously cannot meet people's requirements for ultra-fine or even micro-sized powders.

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