Tianma Powder Vacuum Freeze Drying Machine

Tianma Powder Vacuum Freeze Drying MachineThe process of removing water or other solvents from frozen biological products through sublimation. Sublimation refers to the process in which a solvent, such as water, like dry ice, changes from a solid state to a gaseous state without going through a liquid state. The product obtained from freeze-drying is called freeze-dried material, and the process is called freeze-drying.

Freeze drying is an excellent drying method, and the dried material can be stored for a long time at room temperature under sealed conditions without the need for additives. The structure of freeze-dried items is porous and crispy, and they quickly rehydrate during use. After rehydration, the color, aroma, taste, shape, and activity of the items remain basically unchanged.

The drying chamber body is circular, with a front door opening,Material tray enters and exits from the front end，The outer wall of the warehouse has reinforcing ribs and a base.The material of the warehouse body is304Made of stainless steel. The reinforcing ribs and base outside the warehouse are made of stainless steel material. Dry warehouse exterior bread30mmThick rubber sponge insulation layer.

Tianma Powder Vacuum Freeze Drying MachineA cold trap is a device used in the freeze-drying process to capture water. In theory, the lower the temperature of the cold trap, the stronger its water capturing ability. However, a low temperature of the cold trap requires high refrigeration requirements, resulting in high machine and operating costs. The cold trap temperature of the experimental series freeze dryer mainly includes several levels such as -45 ℃, -60 ℃, and -80 ℃. Freeze drying with a cold trap temperature of -45 ℃ is suitable for some products that are easily freeze-dried, freeze drying machines with a cold trap temperature of around -60 ℃ are suitable for freeze-drying most products, and freeze drying with a cold trap temperature of -80 ℃ is suitable for freeze-drying some special products. The experiment on the effect of cold trap temperature on water capture capacity shows that when the cold trap temperature decreases from -35 ℃ to -55 ℃, the water capture capacity is significantly improved. When the cold trap temperature is below -55 ℃, the water capture capacity of the cold trap is not significantly improved. Therefore, in the absence of special requirements, choosing a cold trap temperature of around -60 ℃ is an ideal choice.