Device for controlling material rack to automatically enter and exit freeze dryer and freeze dryer

Abstract

The invention discloses a device for controlling a material shelf to automatically enter and exit a freeze dryer and the freeze dryer, the material shelf is movably arranged in a pre-freezing space and a sublimation space, the device comprises a telescopic mechanism, a sealing assembly and a mounting assembly, and the device drives the material shelf to move between the pre-freezing space and the sublimation space; the sealing assembly seals a gap between the inlet-outlet and the telescopic mechanism; and the mounting assembly can lock the end parts of the material rack and the telescopic mechanism. The risk of frostbite caused by contact with the frozen material shelf is avoided. And meanwhile, the staying time of operators near the freeze dryer is shortened through automatic operation, and potential safety hazards are further reduced. The introduction of the sealing assembly ensures that the telescopic mechanism does not leak vacuum in the moving process, so that the ultimate vacuum state in the sublimation space is ensured. The method is of great importance to smooth proceeding of the freeze-drying process and product quality. The freeze dryer is matched with PLC programming, the cold trap temperature and the pre-freezing duration can be set, and the intelligent freeze-drying function is achieved.