Designed for drying heat-sensitive, easily decomposable and oxidizable materials, the vacuum oven can flush inert gases into the interior, especially for complex parts.
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Scope of application: Vacuum drying ovens are widely used in research fields such as biochemistry, chemical pharmacy, medical and health, agricultural research, environmental protection, etc., 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 decomposable, oxidizable substances and complex ingredients.
[Edit this paragraph] structure and working principle The electric vacuum drying oven shell is stamped and welded and welded by steel plate. 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 or stainless steel, and the insulation between the studio and the outer casing is filled with insulation cotton. A sample shelf is placed inside the studio for placing various test items, and a mica heater is placed around the outside of the work wall. The door seal is sealed with a silicone rubber strip, and a sight glass for observation is provided on the door. The evacuation and inflation of the electric vacuum drying oven are controlled by a solenoid valve. The electrical box is on the left or the lower part of the cabinet. The front panel of the electrical box is equipped with a vacuum gauge, a temperature control instrument and a control switch. The electrical box is equipped with electrical components.
The electric vacuum drying oven maintains a certain degree of vacuum in the working chamber and uses an intelligent digital temperature controller for temperature setting, display and control. The temperature regulator uses computer technology to collect and process the temperature signal in the working chamber, so that the temperature in the working chamber can be automatically kept at a constant temperature. The temperature control system is PID intelligent temperature control, reliable performance and convenient to use.
Intelligent temperature regulators have over temperature protection. When the temperature in the working chamber exceeds the set temperature value during the operation of the device, the over-temperature protection circuit operates to cut off the heating circuit.
[Edit this paragraph] The advantages of vacuum technology drying have the following advantages over conventional drying technology. The vacuum environment greatly reduces the boiling point of the liquid to be repelled, so vacuum drying can be easily applied to heat sensitive substances;
For samples that are not easy to dry, such as powder or other granular samples, vacuum drying can be used to effectively reduce drying time;
Various structurally complicated mechanical parts or other porous samples are washed and vacuum dried, leaving no residual material after complete drying;
Safer to use - completely eliminate the possibility of oxides exploding under heat or under inert conditions;
Powdered samples are not blown or moved by flowing air compared to ordinary drying that relies on air circulation;
Control features: parameter memory protected by power failure, dead state data loss, call recovery function.
Performance characteristics:
Adopting the domestic first streamline arc design, the outer casing is made of cold-rolled steel plate, and the surface is electrostatically sprayed;
â– This machine temperature control system adopts microcomputer single-chip technology, temperature control, timing, over temperature alarm;
Displayed as dual-screen high-brightness digital tube display, accurate and intuitive indication value, superior performance, touch button setting adjustment parameters;
The temperature control sensor uses a capacitive imported component;
Imported motor and fan blades; timing and timing functions;
The inner liner is made of stainless steel; the semi-circular corners are easy to clean;
The cabinet door is completely elastic and can be adjusted by the user arbitrarily, and the integrally formed silicone rubber door sealing ring ensures high vacuum inside the box;
The machine studio has a rectangular parallelepiped structure, so that the effective volume reaches the large size, and the box door adopts tempered and bulletproof double-glazed glass doors, so that the observation studio culture items can make the user clear at a glance;
1. The vacuum box housing must be effectively grounded to ensure safe use.
2. The vacuum box should be used in an environment where the relative humidity is ≤ 85% RH, there is no corrosive gas around, no strong vibration source and strong electromagnetic field.
3. The vacuum box studio is not treated with explosion-proof, anti-corrosion, etc., and it is not allowed to dry items that are easy, explosive, and prone to corrosive gases.
4. The vacuum pump can't work for a long time. Therefore, when the vacuum reaches the requirements of dry goods, the vacuum valve should be closed first, then the vacuum pump power should be turned off. When the vacuum is less than the requirements of the dry items, then the vacuum valve and the vacuum pump power supply are turned on, and the vacuum is continued. This will extend the life of the vacuum pump.
5. If the dry items are wet, add a filter between the vacuum box and the vacuum pump to prevent moisture from entering the vacuum pump, causing the vacuum pump to malfunction.
6. Dry items should be light weight and small in size (small granular shape) after drying. Vacuum should be added to the working chamber to prevent the vacuum pump (or solenoid valve) from being inhaled by the dry matter.
7. After the vacuum box is used for many times, it will not be able to vacuum. In this case, the door seal should be replaced or the door buckle on the box should be adjusted to extend the distance. When the drying temperature of the vacuum box is higher than 200 °C, it will produce slow air leakage (except 6050, 6050B, 6051, 6053). At this time, remove the back cover of the box and loosen the heater base with an Allen key to replace the seal. Circle or tighten the heater base to solve.
8. If the rubber plug of the bleed valve is difficult to rotate, apply a proper amount of grease to the inside. (such as Vaseline)
9. Except for maintenance, the left side cover (except models 6090 and 6210) cannot be removed to avoid damage to the electrical control system.
10. The vacuum box should always be kept clean. Do not wipe the door glass with a reactive chemical solution. Wipe with a soft cotton cloth.