A small negative pressure jet mill with an ellipsoidal structure crushing chamber

Abstract

The invention discloses a miniature negative pressure jet mill having a crushing cavity with an ellipsoidal structure. The miniature negative pressure jet mill comprises a collecting device, a motor, a control mechanism, an output pipe and a feeding device, and also comprises a negative pressure device and a fluid jet mill, wherein an output device is communicated with the fluid jet mill through the output pipe; a crushing cavity which is partially in an ellipsoidal shape is arranged in the jet mill; airflow inlet channels are arranged in two ends of an oval long shaft of one cross section of the crushing cavity; a material is added to the fluid jet mill through the feeding device; the motor is connected with a grading mechanism of the fluid jet mill through a belt wheel mechanism; the output pipe is connected with the top end of the fluid jet mill; the collecting device is connected with the output pipe; the material is added to the crushing cavity of the fluid jet mill through the feeding device under the control of the control mechanism, airflow flowing inside from each airflow inlet channel is utilized to crush the material, and the output pipe generates pressure along the flow directions of the material and the gas by the negative pressure device, so that the crushed material is output to the collection device through the output pipe.

Description

technical field [0001] The invention relates to a crushing machine, in particular to a small negative pressure jet mill with an ellipsoidal structure crushing chamber. Background technique [0002] Jet mill is an important equipment for micron-scale ultrafine grinding of materials by airflow, and is widely used in ultrafine grinding of non-metallic minerals and chemical raw materials. The jet mill generally includes structures such as air source, raw material bin, crushing chamber, classifying wheel, and dust removal system. Its working principle is to accelerate high-pressure gas through the nozzle into a high-speed airflow, and the airflow is injected into the crushing chamber to make the granular raw materials in the crushing chamber Collide with each other and rub against each other, so as to crush the materials. At the same time, the crushed particles enter the classification area under the drive of the airflow, and are coarsely and finely classified under the action of...

AI Technical Summary

Problems solved by technology

Because in some occasions, such as laboratories, scientific research institutions, etc., a small amount of materials need to be ultra-finely crushed, most of the jet mills in the prior art are not applicable due to their large size.

[0005] Secondly, the asymmetric structure of the jet mill grinding chamber in the prior art leads to uneven flow of the internal air flow, resulting in uneven size of the output pulverized particles, which makes it difficult to meet the requirements of scientific research and other projects on the degree of particle pulverization

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