Freeze drying machine production enterprise pet freeze-drying cod equipment

Freeze drying machine production enterprise pet freeze-drying cod equipment Technical parameters:

Freeze dried products are beneficial for preservation (i.e. prolonging the product's shelf life); According to freeze-drying productionDifferent types of products can be used directly or dissolved in water before use. For example, penicillin bottle freeze-dried powder injections, beauty and makeup bottle freeze-dried powder, and so on have been widely used.

Freeze drying machine production enterprise pet freeze-drying cod equipmentProduct Features:

1. Product, technology *;

2. Beautiful and stylish, with a compact size;

3. Touch screen operation, one click start, automatic control of freeze-drying process, easy and convenient;

4. The freeze-drying process can be independently set and adjusted in real time, and freeze-drying data and curves can be displayed;

4. Imported brands of key components, with low noise, high capacity, and high-quality assurance of high performance;

5. System *, with low operating current and low energy consumption;

6. SUS304 stainless steel material tray and inner liner, ensuring safety and security;

7. Transparent organic glass door, allowing direct observation of the freeze-drying process of materials;

8. Fast defrosting technology, automatic protection against overheating.

The energy-saving device for graded operation of freeze-drying machine is characterized by comprising a condenser, a drying box, and at least two sets of compressor units. Among them, the compressor unit consists of a compressor, an electronic expansion valve, and a servo controller. The electronic expansion valve is connected to the servo controller, and the compressor unit is connected to the coil inside the condenser, which is connected to a temperature sensor.

The advantages of energy-saving devices for graded operation of freeze-drying machines compared to existing technologies are: high degree of automation, precise control of condenser temperature, stable temperature curve in data reports, and no fluctuations, resulting in superior product quality in the end; And due to the controllable cooling capacity, the problem of continuous operation of large compressors under low dry load conditions has been reduced, greatly reducing energy consumption; Gradual start-up also reduces the impact on the power grid, improves equipment safety, and reduces maintenance costs.

1. Controlled freezing point vacuum drying method

The controlled freezing point vacuum drying method utilizes the respective advantages of freeze-drying and vacuum drying to strictly control the temperature of food to be close to freezing point, but cannot freeze. This not only saves energy consumption for refrigeration, but also avoids the problem of thermal denaturation of food and the damage to biological cells during phase transition;

2. Change the structure of the material tray

The material tray can be improved from the thermal conductivity of the tray material and the heat transfer surface between the tray and the material. Choosing materials with good thermal conductivity can effectively enhance the freeze-drying process;

3. Control pre freezing speed and tray loading capacity

Wang Jie et al. found during their research on the vacuum freeze-drying process that the pre freezing rate affects the formation of ice crystals. A faster freezing rate results in smaller ice crystals, which is not conducive to sublimation. The dehydration time is longer, but it dissolves quickly after drying. A slower freezing rate results in larger ice crystals, which is beneficial for drying and dehydration, but dissolves slowly after drying. In addition, the thinner the thickness of material accumulation on the unit area tray, the faster the heat and mass transfer rates, and the shorter the drying time. However, if the material thickness is thin, the amount of material dried per batch per unit freeze-drying area will be less, which is not conducive to improving the unit freeze-drying area and unit time yield. So, choosing the appropriate loading capacity and cooling rate of the material tray can reduce energy consumption.