A method for controlling the feeding and discharging of raw materials on a freeze-drying machine

Abstract

A control method of crude drug feeding and discharging on a freeze-drying machine comprises the steps of 1 sterilizing a material frame in a sterilization area; 2 transferring the sterilized material frame to a film covering area to be subjected to film cover to form a tray; 3 adopting a lifting mode to feed the tray on a board layer of the freeze-drying machine and filling liquid into a medicine bottle on the tray; 4 circulating the steps till the board layer of the freeze-drying machine is full of the trays, and then performing freeze-drying operation; 5 discharging the tray from a freeze-drying box in a lifting mode; 6 performing vacuum intake on the tray in a vacuum intake mode. The control method of the crude drug feeding and discharging on the freeze-drying machine has the advantages of being simple in operation, high in automation degree, capable of improving the freeze-drying efficiency and ensuring the cleanness and the like.

Description

technical field [0001] The invention mainly relates to the field of freeze dryers, in particular to a method for controlling the feeding and discharging of raw materials on the freeze dryer. Background technique [0002] During the use of the freeze dryer, the raw material medicine needs to be sent into and out of the freeze-drying box to complete the freeze-drying operation. [0003] For example, Chinese Patent Application No. 200820156916.6 discloses an automatic loading device for raw material medicine of a freeze dryer. This technology provides a special freeze dryer for freeze drying of raw material medicine. To the inside of the box, filling inside the box. This structure is quite complicated, and the filling nozzle is placed inside the box, which is not conducive to cleaning. Therefore, this model is a special model and can only freeze-dry raw materials. Although the tray and the ply are integrated in the scheme, the ply and the tray are still two parts, but there i...

AI Technical Summary

Problems solved by technology

Although this solution uses trays for freeze-drying, due to the processing problems of the trays and the bottom of the trays, the heat transfer efficiency between the layers and the trays is low, resulting in low freeze-drying efficiency

[0005] Both of the above two methods belong to the bottomed tray method. During the freeze-drying process, due to the poor contact between the tray and the plate layer, it will cause low heat transfer efficiency and thus low freeze-drying efficiency.

There is another raw material drug that uses film freeze-drying, which is designed for a material frame without a bottom. It is mainly operated manually by opening the door, and the material frame covered with the film is artificially placed on the plate layer. Conducive to the realization of aseptic and automatic operation

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