An in-situ automatic cleaning device for a freeze dryer

Abstract

The invention discloses an in-place automatic washing device for a freeze dryer. The in-place automatic washing device comprises a guide rail arranged in a freeze drying cabin, wherein a trolley base is arranged on the guide rail, washing comb supports which are arranged in a layering way are connected to the trolley base, a spray nozzle is arranged on each washing comb support, a water pipe coiling drum and an air pipe coiling drum are arranged on the trolley base and connected with coaxial coiling drum shafts, a water pipe and an air pipe are respectively arranged on the water pipe coiling drum and the air pipe coiling drum, an inlet of the water pipe and an inlet of the air pipe are respectively connected with a water pipe joint and an air pipe joint which are arranged on the lower end of the trolley base, an outlet of the water pipe and an outlet of the air pipe are respectively connected with a pneumatic valve through a rotating joint, and an outlet of the pneumatic valve is connected with the washing comb supports. According to the invention, the problem of in-place washing of the freeze drying cabin is solved, and reciprocated washing and blowdown can be automatically carried out according to actual requirements in terms of programs. The in-place automatic washing device has the characteristics of program control, adjustable water quantity, economy and high efficiency, simple structure, no need of manpower and space, stability and safety, reciprocated washing automaticity and no dead angle and second pollution and accords with GMP (Good Manufacturing Practice) requirements.

Description

technical field [0001] The invention relates to an on-site automatic cleaning device for a vacuum freeze dryer (freeze dryer for short). technical background [0002] Vacuum freeze-drying, also known as freeze-drying, is to first freeze the water-containing material below the eutectic point temperature, so that the free water in it becomes ice, and then, under the appropriate vacuum conditions in the freeze-drying chamber, the ice is sublimated by heating Or the technology of evaporating the adsorbed water, escaping from the material and removing it, so as to obtain the dry product. [0003] In the freeze-drying process, the drying process of the material is completed under vacuum conditions, which means that most of the moisture in the material is removed by sublimation. At -40°C, 1kg of ice will sublime 2.7m 3 The volume of the ice gas will expand by 2700 times, so during the sublimation process, there will be a sublimation airflow continuously escaping from the material...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide an on-site automatic cleaning device for freeze-drying machines, which solves the proble

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