Introduction of air Drying Oven

air dryer

Due to the different shapes of glassware, especially thin-mouthed and tubular glassware, water vapor is not easy to emit when dried in an ordinary drying box after cleaning, so the drying time is long and the power consumption is also increased. , Tubular glass instruments such as

It is especially effective for drying measuring cups, key bottles, flasks, separatory funnels, etc. Its characteristic airflow dryer realizes the purpose of quickly drying special-shaped glass instruments. Compared with ordinary Drying Ovens, it is small in size (diameter 350mm, height 200mm), lightweight, and consumes less power (500W).

1. Electric wire heating type airflow dryer

As shown in Figure 10-10, it is a simple circular design. There is a small electric fan end at the bottom of the interior. The upper part of the fan is an electric heating wire. With the help of the fan, the air is blown through the electric heating wire. After being heated, it flows from the top of each hot air pipe. The exhaust hole is exhausted, and the dried glass instrument is placed on the hot air pipe, and the dry hot air flow can dry the water droplets attached to the inner wall of the glass instrument in a short time.

There are such products in Yingyu Instrument Factory of Gongxian County and Tianhu Instrument Factory of Songxian County in Henan Province.

2. Electrothermal film heating type airflow dryer

Electric heating film is a new product developed and applied in the 1990s. It is a special material that is sent on the surface of non-metallic materials such as glass and enamel to form a thin transparent film. When an electric current passes through it, heat will be generated. .

The flashlight electric heating film has the advantages of transparency, corrosion resistance, long life, and high efficiency of converting electric energy into heat energy, so it is very suitable for application in the laboratory. For example, the outer wall of the three-necked flask is coated with electric heating film, which can save Oil Bath heating. Then observe the reaction status in the flask by hand. Another example is that the fluid to be heated does not need to pass through traditional heating equipment, but can be realized directly through a small section of galvanized heating glass tube. The airflow dryer is also a kind of equipment that uses electrothermal film heating (see Figure 10-11), and there is an electrothermal film heater in the box.

Compared with the above electric wire heating air dryer, it has the following characteristics:

(1) With automatic temperature control device and over-temperature protection device;

(2) A unified air source (small Air Compressor) can drive multiple dryers (vertical dryers do not need a unified air source);

(3) Small in size and light in weight, it can be hung on the wall or placed on the table;

(4) High heat rate and low power consumption;

(5) Long service life.