The composition structure of the freeze-drying ball freeze-drying machine mainly includes a refrigeration system, a vacuum system, a heating system, a control system, as well as hydraulic systems, cleaning systems, sterilization systems, and defrosting systems that may be equipped according to specific needs. The various systems work together to achieve the pre freezing, sublimation drying, and condensation processes of materials. The following is a detailed summary of the various components, structures, and functions of the freeze-drying machine:

1、 Core system of freeze-drying ball freeze-drying machine:

1. Refrigeration system

Composition: refrigerant, compressor, condenser, expansion valve, evaporator, etc.

Function: Provide a cold source for the freeze-drying box and condenser to generate and maintain the low-temperature environment required for their operation. The refrigeration system achieves heat transfer and low temperature maintenance through the circulation of refrigerant between the compressor, condenser, expansion valve, and evaporator.

2. Vacuum system

Composition: Freeze drying oven (also known as drying oven), condenser (water vapor condenser, cold trap), vacuum pipeline, valve, vacuum pump, and vacuum measuring instrument, etc.

Function: Vacuum the freeze-drying box and cold trap to create a low-pressure environment, allowing the moisture in the material to sublime directly into water vapor at low temperatures and be captured by the condenser. The vacuum pump is an important component for establishing a vacuum in a vacuum system, and its suction capacity directly affects drying efficiency and product quality.

3. Heating system

Composition: Heating element (such as electric heater or circulating medium heating pipeline), temperature sensor, temperature controller, etc.

Function: Heating materials in a vacuum environment to promote the sublimation of moisture. The heating system can use direct electric heating method or intermediate medium (such as thermal oil) for heating. By using a circulation pump to continuously circulate the intermediate medium, heat exchange between the shelf and the material is achieved. The temperature control of the heating system is crucial to ensure that the temperature of the material does not exceed its eutectic point during the sublimation process, in order to avoid melting or damaging its structure.

4. Control system

Composition: PLC controller, touch screen, sensors (temperature, pressure, etc.), interlock protection device, etc.

Function: Coordinate the work of various systems and achieve automation control. The control system can manually or automatically control the operation of the freeze dryer, including the start, stop, and parameter adjustment of the refrigeration system, vacuum system, and heating system. At the same time, the control system also has functions such as data recording and fault alarm, ensuring the stability and safety of the freeze-drying process.

2、 Freeze drying ball freeze dryer auxiliary system:

1. Hydraulic system

Application scenario: Mainly used to press the bottle stopper into the bottle mouth at the end of freeze-drying, such as in the production process of penicillin bottle freeze-dried powder, which requires the support of a hydraulic system.

2. Cleaning System (CIP)

Function: The online cleaning system is used for cleaning the freeze-drying box and cold trap after freeze-drying to ensure the hygiene of the equipment and the safety of the next use.

3. Sterilization System (SIP)

Function: The online sterilization system is used for sterilizing freeze-drying boxes and cold traps before and after freeze-drying operations to meet the requirements of aseptic production.

4. Defrosting system

Function: After freeze-drying, defrost the water trap for the next freeze-drying operation. The common defrosting methods include steam defrosting and water bath defrosting.