Fermentation agent freeze-drying granulation process and granulation equipment thereof

According to the fermentation agent freeze-drying granulation process and granulation equipment thereof, a latticed tray mold is arranged in a tray, a fermentation agent single strain or composite strain bacterial suspension needing to be freeze-dried is poured into the tray mold, the fermentation agent suspension starts to form fermentation agent particles in the freeze-drying process, and particles with the same shape as the tray mold are formed after freeze-drying; a gap is formed between the material and the tray mold after the material shrinks at a specific stage in the freeze-drying process, and ice crystals at the bottom of the material can sublimate; compared with the prior art, the equipment cost of the granulating technology is almost negligible, the granulating technology is very easily suitable for industrialization of yoghurt starter products in China, the dissolving property of the starter products is improved, the problems of dust, equipment sticking and agglomeration in the using process are a