Airflow crushing device for pharmaceutical raw materials

Abstract

The invention discloses an airflow crushing device for pharmaceutical raw materials. The airflow crushing device is characterized in that a case is connected to the middle of a machine table; a feeding hopper is arranged in an inner cavity of the case, and the feeding hopper is connected with a material nozzle; a pneumatic gear is installed in the inner cavity through an air inlet pipe; the air inlet pipe is further provided with an auxiliary supersonic airflow nozzle to drive an impeller of the pneumatic gear to rotate; one side of the impeller is connected with a first bevel gear; the inner cavity communicates with a fine powder collecting pipe and is further fixedly connected with a hardening rotating shaft tube to sleeve the fine powder collecting pipe; a second bevel gear is installed on the hardening rotating shaft tube and meshed with the first bevel gear, and the lower end of the second bevel gear is connected with a scraper through a connecting cylinder; when the second bevel gear rotates, the scraper is driven to do circular motion in the inner cavity, so as to scrape materials on the wall of the inner cavity; and a plurality of supersonic airflow nozzles are arranged at the lower part of the inner cavity. A scraper rotating shaft is ingeniously arranged outside the fine powder collecting pipe, and airflow is used for driving the scraper, so that fine powder collection at the top is not affected, meanwhile, the problem that coarse powder is accumulated on the cavity wall is solved, and the coarse powder can be cleared away more thoroughly and comprehensively in a wall scraping manner.

Description

technical field [0001] The invention belongs to the technical field of medicinal material raw material processing equipment, and in particular relates to a pharmaceutical raw material jet crushing device. Background technique [0002] The existing jet milling device has been favored by the crushing industry for its advantages of high product purity, good dispersibility, fine particle size, and narrow particle size distribution. In general, fresh medicinal materials need to be pulverized to prepare various pharmaceutical dosage forms and to dry and store fresh medicinal materials. When fresh medicinal materials are air-pulverized, since the fresh medicinal materials have a certain amount of water, the coarse powder is thrown towards the When the surrounding wall of the crushing chamber performs circular motion and continues to be crushed, the coarse powder of medicinal materials will be agglomerated, and the coarse powder of medicinal materials will stick together, resulting ...

AI Technical Summary

Problems solved by technology

In general, fresh medicinal materials need to be pulverized to prepare various pharmaceutical dosage forms and to dry and store fresh medicinal materials. When fresh medicinal materials are air-pulverized, since the fresh medicinal materials have a certain amount of water, the coarse powder is thrown towards the When the surrounding wall of the crushing chamber performs circular motion and continues to crush, the coarse powder of medicinal materials will be agglomerated. The coarse powder of medicinal materials will stick together, resulting in the accumulation of coarse powder on the surrounding wall of the crushing chamber, which will affect the crushing effect of fresh medicinal materials.

[0003] At present, there has been a crushing device with a cutter body that can be ejected and accommodated in the crushing chamber to prevent the accumulation of coarse powder on the wall of the chamber. When such a crushing device is working, the gap between adjacent cutter bodies is still There will be coarse powder adhering to the chamber wall, and the powder residue adhering to the chamber wall cannot be completely removed

People also thought of using the traditional wall scraping method to remove the coarse powder on the cavity wall, but because the airflow milling work needs to discharge the fine powder that meets the particle size in the middle of the top, so how to set up the wall scraper cleverly will not affect The discharge of fine powder at the top is a big problem

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