Device for jet milling of viscous material and gathering of dust

A technology of airflow crushing and dust collection, which is applied in grain processing, etc. It can solve the problems of easy blockage of grinding chamber, grading wheel and pipeline, etc., and achieve the effect of less dust content, smooth inner wall and enlarged pipe diameter

Inactive Publication Date: 2013-11-13
NANJING UNIV OF SCI & TECH
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Problems solved by technology

[0007] The purpose of the present invention is to solve the problem of viscous materials that are easy to block the grinding chamber, grading wheel and pipeline under the action of

Method used

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  • Device for jet milling of viscous material and gathering of dust

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Example Embodiment

[0018] Such as figure 1 As shown, the present invention adopts a powder collecting box 3. The gas-solid separation and material collection of the pulverized product are all completed in the powder collecting box 3. The powder collecting box 3 operates under negative pressure, and there will be no dust leakage at the production site; jet mill 1 (This embodiment uses a flat jet mill with a lower discharge structure) and is fixed on the powder box 3. The internal contact material parts of the jet mill 1 are all finely processed wear-resistant ceramic parts, and the surface is smooth, which can reduce material stickiness. Attached; The jet mill 1 is a quick assembly structure, which can be opened and cleaned quickly to realize the rapid cleaning of the grinding cavity and ensure the normal production; adjust the jet mill 1 to crush the main air pressure and feed auxiliary air pressure to the specified value to ensure The feed port is under negative pressure, and the viscous materia...

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Abstract

The invention relates to a device for jet milling of a viscous material and gathering of high-density powder and dust with certain viscosity. The device comprises a powder gathering apparatus, a deduster and a jet pulverizer. The powder gathering apparatus is connected to the deduster; the powder gathering apparatus comprises a discharging pipe, a powder gathering bag, a powder gathering case and a powder gathering barrel. The jet pulverizer is arranged outside on the top of the powder gathering case; the powder gathering bag is arranged in the powder gathering case; the discharging pipe passes through the top of the powder gathering case; the lower end of the discharging pipe is connected to the powder gathering bag, and the upper end of the discharging pipe is connected to the jet pulverizer; and the powder gathering barrel is arranged at the bottom of the powder gathering case and is connected to the lower end of the powder gathering bag. The device for ultrafine grinding and gathering provided by the invention does not contain a machinery rotary part, or employ a cyclone separator for gas-solid separation or a fixed pipeline for conveying a finished product and high speed dust-laden gas, so as to effectively solve the problems of adherence and obstruction of the viscous material under the effect of high speed jet; and an antistatic collection cloth bag timely eliminates statics, reduces obstruction of the dust on the apertures of the filter cloth of the powder gathering bag and facilitates material collection and gas-solid separation of the dust.

Description

technical field [0001] The invention relates to a device suitable for airflow ultrafine crushing of viscous materials, especially a device for airflow crushing of viscous materials and a high-concentration powder collection and dust collection device with certain viscosity, which can be applied to raw materials in pharmaceutical, food, chemical and other industries ultrafine crushing. Background technique [0002] There are many viscous raw materials in the pharmaceutical, chemical and other industries that need to be ultra-finely pulverized in order to fully exert their efficacy and be applied. my country is a big country in the production and export of corticosteroid drugs. These drugs have a certain degree of viscosity, and the fineness of the drug directly affects the efficacy. Foreign companies require the raw materials to be micronized, and the ultrafine grinding of viscous materials has always been a problem in the industry. Due to the viscosity of the material in th...

Claims

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Application Information

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IPC IPC(8): B02C19/06
Inventor 叶明泉韩爱军陈昕
Owner NANJING UNIV OF SCI & TECH
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