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Product Description

Freeze drying refers to the process of removing water or other solvents from frozen biological products by sublimation. Sublimation refers to the process in which a solvent, such as water, like dry ice, changes directly from a solid state to a gaseous state without going through a liquid state. The product obtained by freeze-drying is called lyophilizer, and this process is called lyophilization.

The core technology of food freeze-drying machine is freeze-drying, that is, freeze-drying. Freeze-drying is to freeze a substance that contains a lot of water into a solid by cooling it in advance. Then under vacuum conditions, the water vapor is directly sublimated from the solid, and the substance itself remains in the frozen ice shelf, so that the dried product does not lose the original solid skeleton structure, maintains the original shape of the material, and the product is restored Excellent water quality. The purpose of freeze-drying is to store moist materials, usually an aqueous solution containing microbial tissue, or an aqueous solution containing no microbial tissue. After the product is frozen, it is placed under a low water pressure. At this time, it contains the sublimation of ice, which directly changes from a solid state to a vapor state without melting. Compared with other drying methods, it avoids chemical, physical and enzymatic changes. Thus, the physical properties of the packaged product are not easily changed.

1. Dry warehouse/Plate layer

   No dead Angle, surface roughness ≤0.5 m, meets the requirement of sterility

The storehouse body, plate layer and hose are inspected in multiple procedures to ensure no leakage

Rotary door lock design, easy to open (automatic hydraulic door lock optional)

The heating and cooling of the plate layer are controlled by PLC, and the temperature control precision is ≤±1ºC

Plate heating mode is optional: constant temperature/stage heating

2.Cold trap

All Su304/316L stainless steel manufacturing

A variety of water traps structure optional, flexible layout, in line with the actual

space requirements

Argon arc welding, one - time inside and outside molding, beauty is not smooth,

no leakage of pipeline

3.Vacuum system

Adopt pre-pumping and maintenance dual system design, each unit can be used alone, to ensure the stability and durability of the system

Multistage vacuum Roots pump is adopted to improve the pumping rate and limit vacuum ≤1Pa

4.Refrigeration system

Adopt high quality imported compressor unit, accurately calculate cooling capacity demand, energy saving and environmental protection

Bipolar piston/cryogenic screw compressors are optional to meet different refrigeration requirements

The system is equipped with multiple protection functions: high pressure protection, low pressure protection, differential oil pressure protection, etc., to ensure the stable operation of the unit

Multiple compressor units can be connected in parallel with adjustable refrigerating capacity and high efficiency and energy saving

The system adopts compound refrigerant, which meets the international environmental protection requirements

5. Circulation system

Electric/steam heating is optional

The indirect heating method uses circulating pump and plate heat exchanger to provide uniform heat for the plate layer

High stability medium is selected to ensure that the heating temperature meets the customer's requirements

6.Control system

The lyophilizer can be controlled manually or automatically with multiple passwords and electronic signatures

Friendly man-machine interface, detailed display of the working state of the equipment

PLC control, constant temperature heating and phase heating control optional

There is no interlocking protection and automatic fault alarm function for the power source for lyophilization operation

Can be connected with the computer, remote real-time monitoring equipment run

Automatic record and storage of lyophilized data and lyophilized curve, with data storage function of power failure