System for monitoring pressure in cavity in medicine granulation process

Abstract

The invention discloses an intracavity pressure monitoring system in a medicine granulation process, which relates to the technical field of general control or regulation systems and comprises a drying tank, an air supply mechanism, an air inlet pressure monitoring sensor, an air outlet pressure monitoring sensor, a controller and an air uniform distribution mechanism, according to the medicine drying device, the air pressure difference change between the air inlet pipe and the air outlet pipe of the drying tank is monitored, the air speed change in the drying tank is monitored, the controller dynamically adjusts the opening degree of the air inlet adjusting valve according to the air speed change in the drying tank, then the air speed in the drying tank is adjusted to the set air volume, and the medicine drying quality is guaranteed; through the arrangement of the air uniform distribution mechanism, when the medicine is granulated and dried, high-temperature air flow in the drying tank is uniformly distributed, a function of rapidly stirring boiling medicine liquid is achieved, the phenomenon of dead zones is effectively avoided, and the medicine drying efficiency and the finished product quality are improved.

Description

technical field [0001] The invention relates to the general technical field of control or regulation systems, and in particular to a cavity pressure monitoring system in the process of drug granulation. Background technique [0002] The drug boiling drying granulator is a production equipment in the pharmaceutical industry. The powder material is put into the closed container of the hopper. Due to the action of the hot air flow, the powder is suspended and circulated in a fluidized state to achieve uniform mixing. At the same time, it is sprayed into mist. The coating material wets the fluid in the container, so that the powder is condensed into small loose particles. At the same time of granulation, due to the efficient drying of the hot air flow, the water is continuously evaporated and the powder is continuously solidified. The process is repeated to form an ideal, For uniform microporous spherical particles, three processes of mixing, granulation and drying are completed...

AI Technical Summary

Problems solved by technology

[0003] Among them, the size of the wind speed will directly affect the effect of drug forming and drying. If the wind speed is too small, the boiling effect of the liquid medicine will be poor. In some boiling dryers, the air intake is mostly directly blown into the drying tank from the bottom of the drying tank, which tends to make the air distribution uneven, making the contact area between the liquid medicine and the hot air flow smaller, which in turn affects the drying effect, and is prone to dead zones. At the same time, during the drying process, the drug is easy to stick to the inner wall of the drying tank, which will affect the quality of the finished drug particles

Images