Operation room purification company to talk about the composition of ventilation system
Ventilation systems are generally composed of ventilation equipment, ventilation ducts, mufflers, fans, and control systems.
Ventilation equipment commonly used in the laboratory is chiefly: ventilator, atomic absorption hood, universal exhaust hood, desktop hood, etc.
A fume hood is a ventilation device for safely handling harmful gases or vapors. It is used to capture, seal and transport pollutants and harmful gases so as to prevent them from escaping to the laboratory, thus minimizing the amount of pollutants that the operator inhales and touches by inhaling pollutants through the operating area. The airflow in the fume hood is that the air in the test room is sucked into the fume hood through the exhaust fan, and the polluted gas in the fume hood is diluted and discharged into the field through the ventilation system, so that the low concentration can be dispersed.
Atomic absorption cover is mainly suitable for large-scale precision instruments such as atomic absorption spectrometer which touch high temperature and require partial ventilation. It requires positioning device, and is also one of the necessary considerations in the planning of all laboratories.
Universal exhaust hood is the preferred part of the ventilation, the device is simple, positioning sensitive, ventilation function is outstanding, can effectively maintain the safety of laboratory workers, suitable for liquid chromatography, gas chromatography or waste gas volume is small and no high temperature test.
Desktop hood is primarily suitable for organic chemistry or long-term distillation of the laboratory, in solving the ventilation requirements of all such laboratories, it is one of the essential equipment.
2. ventilation pipe
For general construction, if the gas discharged indoors is not corrosive, galvanized steel sheet can be used for ventilation pipes. For laboratories where corrosive gases occur, PVC ducts or FRP ducts with corrosion-resistant materials should be used for air pipes. In the general laboratory ventilation engineering, indoor PVC pipes are mostly used. Outdoor glass steel air pipes are used.
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