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The working principle of the dry heat sterilization oven is to put the oven, bottle or trolley filled with materials into the box, start the PLC programmable control system, the inner circulation fan works, the heating, the butterfly valve is simultaneously opened, and the drying box is heated rapidly.
Under the action of the internal circulation fan, the hot air enters the tank through the high-temperature resistant high-efficiency filter, and a uniform distribution of air is transmitted to the tank under the adjustment of the micropores, and the dry air absorbs the moisture on the surface of the bottle (material, article) and enters the heating. The passage is evaporatively discharged, and the dry air is circulated and flowed under the action of the fan, and the water vapor is discharged.
As the water vapor gradually decreases and the fresh filtered air is replenished intermittently, the tank body is in a slightly positive pressure state, the constant temperature is over, and the process control is completed. Turn on the air supply or (inlet water) forced cooling, the automatic butterfly valve enters the closed state, and the sound and light prompts to open the door and bottle out.
It is understood that China's dry heat sterilization oven has made great progress compared with the past. Currently, in the pharmaceutical, chemical, food and other industries, the use of dry heat sterilization ovens has become very common. With the rapid development of China's drying technology, the competition among oven equipment manufacturers has become increasingly fierce. In order to win market share, these companies have to increase the added value of products.
Among them, the average temperature of the oven is a performance that the customer* values, and is also an important indicator for judging the quality of the same oven. Some manufacturers said that the oven is in the constant temperature stage, although the temperature of the control instrument is basically stable, but the temperature of each point in the box is different, which may cause the samples in different positions to be heated differently, so the dry heat sterilization oven manufacturing The temperature uniformity of the oven must be considered.
At the same time, for manufacturers, energy conservation is a very important factor and a key to reducing costs. According to industry insiders, improving the energy efficiency of the oven can be started from these angles: increase the air temperature at the inlet of the oven, reduce the temperature of the exhaust gas at the outlet of the equipment, do a good job of heat preservation of the drying system, and reduce various heat losses in the drying process.
In addition, cross-contamination must be prevented in the design of dry heat sterilization ovens. For example, the environmental level corresponding to sterility requirements such as pharmaceuticals is 100, so the entire process of oven sterilization and heat removal must be carried out under laminar flow protection.
It is reported that with the diversification of user needs, non-standard customization is becoming more and more popular, which has prompted many manufacturers to find some business opportunities. Meeting the process requirements is the purpose of the equipment. At present, many oven manufacturers have been able to provide non-standard equipment that meets various process requirements.
Under the background of China's energy conservation, environmental protection and other related policies, as well as the continuous improvement of the requirements of the pharmaceutical industry, China's dry heat sterilization oven manufacturers only continue to increase scientific and technological research and development efforts, the introduction of foreign advanced technology, combined with the needs of China's pharmaceutical industry, In order to develop a more environmentally friendly, energy-efficient and effective product, the entire pharmaceutical industry will be better developed.
Drying and sterilization are very familiar to pharmaceutical manufacturers, and they guarantee the quality of production. In recent years, with the increase in the requirements of the new GMP, the requirements of the pharmaceutical industry for drying, sterilization and equipment are also increasing. Among them, the dry heat sterilization oven is suitable for drying and sterilizing the pyrogen and solid materials of the vials, ampoules, aluminum caps, metal and glassware in the pharmaceutical industry.