The cordyceps freeze dryer is composed of drying chamber, refrigeration system vacuum system, media heat transfer circulation system, automatic control system, pneumatic system and in-place cleaning and disinfection system.
The drying chamber is a vacuum closed low-pressure container, all materials are made of stainless steel, can withstand positive and negative pressure, in line with the requirements of steam sterilization, the sealing is made of high and low temperature resistant silicone rubber, the insulation layer is made of closed bubble elastic insulation material.
1) Chamber body: The rectangular box with high space utilization rate is provided with a drain outlet at the bottom and an observation window on the side. The box is also equipped with a pressure gauge, temperature resistance, vent valve, seepage valve, safety valve and spray inlet joint.
2) Shelves: The energy needed to cool and warm the food is transmitted to the shelf through the heat exchange media, and then to the food. Shelf adopts special hollow splint, high strength, good sealing. The shelf assembly is installed in the frozen drying oven through the bracket. The upper layer is set up as the heat radiation compensation board to ensure that the space of the food in the box is in the same temperature environment. In addition, the rails are set on both sides and back of the shelf to avoid the food plate or food from the shelf.
3) Door: Automatic cylinder locking device. Ensure the chamber internal pressure process required vacuum degree. When the vacuum pump is working, open the butterfly room of the thousand boxes, and the air and water vapor in the vacuum drying room will enter the vacuum pump after collecting water through the water trap, and then discharge the system through the exhaust port of the vacuum pump. The exhaust port of the vacuum pump is equipped with an oil mist catcher to prevent the smoke in the exhaust gas from polluting the indoor environment. To prevent water vapor from entering the pump, the system is equipped with a gas trap valve that is opened during the drying process.
Cordyceps Freeze Dryer , Media heat transfer circulation system: The energy required for food cooling and heating is driven by the circulation pump through the heat transfer media to the shelf, and then to the food. The cold source of food cooling is provided by the refrigeration system, and the heat source of food heating is provided by the heating tank. The switch between cooling and heating is completed by controlling the electromagnetic valve switch of cold source and heat source. When heating up, the steam enters the heating tank to heat the media, and the mixing ratio of the heat medium from the heating tank and the backflow heat medium of the shelf is adjusted with the pneumatic three-way regulating valve, and the plate heat exchanger is controlled to cool the water and electricity as the valve to control the temperature of the shelf. The system has heat medium heating tank plate heat exchanger, pneumatic regulating valve, cooling water solenoid valve, circulating pump, pipeline, solenoid valve, temperature sensor and so on.
Automatic control system of cordyceps Freeze Dryer: It has the functions of freeze-drying curve setting, vacuum pump test and control, media temperature, food temperature and water catcher temperature control, dry state detection, derouting, in-place cleaning and sterilization, automatic protection and alarm.
Pneumatic system of cordyceps Freeze Dryer: Control pneumatic valve.
In-place cleaning and disinfection system: Used for cleaning and steam disinfection of dry tank water traps.
