Device for pulverising desiccated bulk product in a freeze-drying apparatus for foodstuffs, medicaments, and so forth

摘要

Desiccated bulk of liquid material, which has completed its freezing and desiccation in a freeze-drying apparatus, is subjected to pulverization within the machine body of a freeze-drying apparatus. According to the present invention, liquid material is caused to freeze as a molded frozen body (M) in the form of a cylinder following the shape of the inner wall surface of the tube (1); then, the water content in the material of the molded frozen body (M) is sublimated under the vacuum condition, to cause it to dry in a freeze-drying apparatus (W), wherein a discharge port (d) is defined at the lower end side of the tube (1), and jet nozzles (N) are disposed, in the inner wall surface of the tube, for ejecting compressed air or gas toward the inner bore or space of the tube, thereby crushing and pulverizing the molded frozen body (M) of liquid material as freeze-dried by freezing the liquid material within the tube (1), by jet current ejected from the jet nozzles (N).