I believe that many people are not very clear about the difference between vacuum dryers and ordinary ordinary dryers. Let's talk about the difference between the two. First of all, they are commonly used drying equipment, mainly used to dry materials, and can also provide the temperature environment required for experiments. Dryers are used in various industries such as chemical industry, electronics, casting, automobiles, food, machinery, etc. Generally divided into galvanized steel and Stainless steel liner, pointer and digital display, natural convection and air circulation.
At present, the performance characteristics of the new domestic vacuum dryer:
1. The shell is made of cold-rolled steel plate, and the surface is electrostatically sprayed;
2 The temperature control system of the vacuum dryer adopts microcomputer single chip technology, temperature control, timing, and over-temperature alarm;
3. Reasonable air duct and circulation system, so that the temperature uniformity in the work room changes little;
4 The display is a dual-screen high-brightness digital tube display, with accurate and intuitive indications, superior performance, and touch-type buttons to set adjustment parameters;
5 The temperature control sensor adopts the original imported components of capacitive type;
6 with timing and timing functions;
7 The inner tank is made of mirror stainless steel material; the semi-circular four corners are easy to clean;
8. Adopt imported motor and fan blades, micro air circulation, which can make users eliminate the doubts about cultivating small or powdered items that are worried about blowing away
The vacuum dryer is specially designed for drying heat-sensitive, easily decomposable and easy-to-oxidize substances, and can rush inert gas into the interior, especially some items with complex components can also be dried quickly.
Scope of application: The vacuum dryer is widely used in research and application fields such as biochemistry, chemical pharmacy, medical and health care, agricultural scientific research, environmental protection, etc. It is only used for powder drying, baking and disinfection and sterilization of various glass containers. It is especially suitable for fast and efficient drying of heat-sensitive, easily decomposed, easily oxidized substances and complex composition items.
Structure and working principle of vacuum dryer
The shell of the electric heating vacuum dryer is stamped, folded and welded from steel plates. The surface of the shell is treated with high-strength electrostatic spray coating, and the paint film is smooth and firm. The studio is made of carbon steel plate or stainless steel plate by folding and welding, and insulation cotton is filled between the studio and the shell. The interior of the studio is provided with a sample shelf for placing various test items, and a mica heater is installed around the outer wall of the studio. The door seal is sealed with a silicone rubber strip, and the door is provided with a sight glass for observation. The evacuation and inflation of the electric vacuum dryer are controlled by solenoid valves. The electric machine is on the left or lower part of the body. The front panel of the electric machine is equipped with vacuum gauges, temperature control instruments and control switches. The electric machine is equipped with electrical components.
The electric heating vacuum dryer can maintain a certain degree of vacuum in the working room and use an intelligent digital temperature controller to set, display and control the temperature. The temperature regulator adopts computer technology to collect and process the temperature signal in the work room, so that the temperature in the work room can be automatically maintained at a constant temperature. The temperature control system is a P.I.D intelligent temperature control system with reliable performance and convenient use.
Intelligent temperature regulators have over-temperature protection functions. During the working process of the equipment, if the temperature in the work room exceeds the set temperature value, the over-temperature protection circuit will act to cut off the heating circuit.
Compared with ordinary dryers, vacuum dryers have the following advantages:
1 The vacuum environment greatly reduces the boiling point of the liquid that needs to be driven off, so vacuum drying can be easily applied to heat-sensitive substances; 2 For samples that are not easy to dry, such as powder or other granular samples, the use of vacuum drying can effectively shorten the drying time;
3. Various mechanical parts or other porous samples with complex structures are cleaned and dried by vacuum drying, and no residual substances are left after they are completely dried;
4. Safer to use - under vacuum or inert conditions, completely eliminate the possibility of thermal explosion of oxides;
5 Compared with ordinary drying that relies on air circulation, powdered samples are not blown or moved by flowing air.
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