FIELD: chemical, pharmaceutical and microbiological industries; agricultural and industrial complexes. SUBSTANCE: vacuum sublimation (freeze) drier has housing with transportation and unloading devices inside it and power sources. Transportation device is made in form of two vertical concentric perforated drums whose end portion is mounted above unloading device at clearance. Unloading device is made in form of belt conveyer. Power sources are connected to upper and lower distributing rings of outer drum; locking member made from flexible tape is located around this drum; this tape may be rolled around by means of flexible rollers; drive and driven rollers are located at clearance. EFFECT: intensification of drying process; reduced power requirements; enhanced operational reliability. 3 dwg
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