Anti-medicine strip bonding device and medicine strip processing method

Abstract

The invention relates to a device for preventing adhesion of medicinal strips and a method for processing the medicinal strips. The device comprises an air pipe, wherein two side air pipes are formed by the vertical extending of two ends of the air pipe, the air pipe and the two side air pipes form a U-shaped vent pipe, an air inlet is formed on the air pipe, and a plurality of air outlets are formed on the inner side wall of the U-shaped vent pipe. Alternatively, the device comprises an air pipe, wherein side air pipes are formed by the vertical extending of two ends of the air pipe, the air pipe and the side air pipes form a rectangular vent pipe, an air inlet is formed on the air pipe, and a plurality of air outlets are formed on the inner side wall of the rectangular vent pipe. According to the method for processing the medicinal strips, the air pressure at the outlet of each conical blowing nozzle is 0-10 Mpa. With the device provided by the invention, the flow rate of air at the conical nozzle can be adjusted to control the solvent volatilization speed according to the formula of a product, and therefore the adhesion of the medicinal strips can be prevented.

Description

technical field [0001] The invention belongs to the technical field of propellants and explosives, and mainly relates to a compression-stretching auxiliary device, in particular to a bonding device and method for anti-explosive strips in the manufacturing process of small-granule drug solvent-based compression-stretching, which is mainly used for propellant and granular propellant Preparation of pellets. Background technique [0002] The preparation of propellant and granule-cast propellant granules mainly includes absorption, calendering, gelling, compression stretching, cutting, sieving, polishing, drying and other processes. Among them, the pressing and stretching process is particularly critical in the granulation process, which directly affects the drug type, burning rate, burning rate pressure index, and ballistic performance of the formed grain. At present, the preparation of small granules mainly adopts the pressure-stretching process of the oil press solvent method...

AI Technical Summary

Problems solved by technology

This will cause that in the follow-up medicine cutting process, the bonded medicine strips cannot be separated, and the cut medicine strips are flakes, which reduces the yield of the product, such as figure 1 as shown in (b)

③During the pressing and stretching process, the medicine strips are not bonded into a group, but due to the uneven volatilization of the solvent, the medicine strips are easily bent and deformed during the free fall process of the medicine guide plate, forming a curved medicine strip similar to "instant noodles", such as figure 1 As shown in (c), this kind of medicine strip is still a curved medicine strip after drying the medicine, and the end face of the medicine strip is inclined during the medicine cutting process.

This makes the consistency of the pills worse to a certain extent, and ultimately has a certain negative impact on the performance test results of the product

[0038] In the solvent stretching process, if the solvent content in the propellant formula is small, the sticking phenomenon of the drug bar is not obvious without a ventilated solvent diffusion device. Some new propellant formulas need to increase the proportion of solvent due to special requirements. At this time, there is no ventilated solvent diffusion. The sticking phenomenon of the device is obvious. It has been proved by experiments that the loss rate of high solvent content gunpowder formula is as high as 30% to 40% due to sticking and forming agglomerates in the compression and stretching process.

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