Working principle and technical specifications of vacuum drying oven

The vacuum drying oven is an older drying device, which is divided into several layers by heating plates inside the oven. Hot water or low-pressure steam is introduced into the heating plate as the heating medium. The tray containing the medicine to be dried is placed on the heating plate, the box door is closed, and a vacuum pump is used to create a vacuum inside the box. The heating plate heats the medicine to temperature through the circulating flow of the heating medium, and the moisture begins to evaporate and gradually be evacuated with the vacuum. This device is easy to control and can condense and recover evaporated solvents. During the drying process, drugs are not easily contaminated and can be used for drug drying, packaging sterilization, and heat treatment.

in the last centuryIn the 1980s, this equipment was commonly used as the main dryer in the raw material pharmaceutical industry. However, due to the difficulty of online cleaning and sterilization of the material tray, the drying speed was slow, the labor intensity of workers was high, and in order to achieve drug uniformity, it had to be mixed by a powder mixing device after drying. Nowadays, it is rarely used in large-scale production of raw materials and is mostly used for medium and small-scale trial production or packaging material heat treatment of Sully air compressor accessories.

The vacuum drying oven is designed specifically for drying heat sensitive, easily decomposable, and oxidizable substances. It can be filled with inert gas inside, especially for items with complex components that can be quickly dried. Widely used in the pharmaceutical, electronics, and chemical industries.

Technical Specifications:

1. Temperature control range: RT+10~200 ℃, 250 ℃, RT+5 ℃~65 ℃

2. Temperature resolution: 0.1 ℃

3. Constant temperature fluctuation: ± 1 ℃

4. Achieve vacuum degree: less than 133Pa

5. Studio material: stainless steel plate (or cold rolled plate)

6. Timing range: 0~9999min

7. Power supply voltage: 220V/50Hz • 380V/50Hz

8.容积： 20L、50L、90L、210L、250L

Performance Characteristics:

1. Adopting a convergent streamline circular arc design, the shell is made of cold-rolled steel plate, and the surface is electrostatically sprayed with plastic;

2. The temperature control system of this machine adopts microcomputer microcontroller technology for temperature control, timing, and over temperature alarm;

3. Display as dual screen high brightness digital tube display, accurate and intuitive indication, performance *, touch button setting and adjustment parameters;

4. The temperature control sensor adopts a capacitive component;

5. Adopting imported motors and blades; Equipped with timing and timer functions;

6. The inner liner is made of stainless steel material; The semi-circular corners are easy to clean;

7. The tightness of the chassis door can be adjusted by the user, and the silicone rubber door seal ring formed as a whole ensures high vacuum inside the box;

8. The workshop of this machine is a rectangular structure, and the box door adopts tempered glass and double-layer glass doors, making it easy for users to observe the cultivation items in the workshop at a glance;