Design of Ventilation System Engineering in Clean Laboratory
Design of Ventilation System Engineering in Clean
The ventilation pipeline system of the clean pharma machinery mainly includes fans, air ducts, air valves, mufflers, waste gas treatment towers, etc. The material of the ventilation pipelines is preferably FRP inorganic resin material, PVC material or PP material can also be used, and the inner wall of the air duct is Should be roughened to reduce wind noise,...
Text label: clean laboratory design, ventilation system engineering, terminal equipment, Zhongjing Global Purification
Design of ventilation system engineering of clean laboratory
The ventilation pipeline system of the clean laboratory mainly includes fans, air ducts, air valves, mufflers, waste gas treatment towers, etc. The material of the ventilation pipelines is preferably FRP inorganic resin material, PVC material or PP material can also be used, and the inner wall of the air duct is It should be made into a rough surface to reduce the wind noise, the shape can be round or rectangular, the diameter is 250-500mm, and the size is determined according to the requirements of the exhaust air volume; for a general laboratory, if the gas discharged indoors is not corrosive, the air duct should not be corrosive. The material can be galvanized iron sheet; if the exhaust gas is corrosive to a certain extent, the air duct should be made of PVC and FRP air ducts with corrosion-resistant materials. If the exhaust gas passing through the system contains strong acid, the ventilation duct should be made of PP material. Corrosive gases, or if required by customers, stainless steel air ducts can also be used; if the system is required to supplement air, galvanized pipes can be used, and low-noise axial fans can be used for supplementary air fans. Consider hose connections such as aluminum foil tubing, plastic hose, etc.
Special fan for clean laboratory: centrifugal fan, multiple fume hoods, used when the exhaust air volume is large; axial flow fan, single fume hood, single atomic absorption hood, used when the air volume is small; diagonal flow fan, double air volume A fume hood and a double atomic absorption hood are used when the air volume is slightly larger. When selecting fans, parameters are often considered: air volume, dynamic pressure, static pressure, total pressure, shaft power, rotational speed, noise, and balance level; anti-corrosion fans should be installed on the outdoor roof, the air outlet should be protected from rain, and shock absorbers, upwind valves, Muffler, etc.; the higher the balance accuracy level of the impeller, the smaller the allowable unbalance of the impeller, the smaller the vibration and the noise caused by the vibration caused by the unbalance of the impeller when the impeller rotates, and the life of the bearing will be prolonged. The product quality and service time of the whole machine are improved. Zhongjing Global Purification can provide consulting, planning, design, construction, installation, transformation and other supporting services for laboratories and clean laboratories.
ventilation terminal equipment mainly includes universal exhaust hoods, atomic absorption hoods, fume hoods, blowing and suction exhaust hoods, etc. The fan filter unit FFU is a laboratory purification equipment, and it is also required by many clean rooms. If the clean room ceiling is divided into several modules, the use of FFU is the best choice. The fan filter unit FFU can supply air in such a ceiling. The best balanced filling, and also meet the height requirements of the static pressure box; if the static pressure is insufficient, and the conditions are limited, the air supply resistance is also very weak, you need to use the FFU laminar flow hood, which can bring its own power, so as to effectively Solve the problem of insufficient static pressure. The universal exhaust hood is used for the extraction of laboratory exhaust gas and electronic welding fumes. It is resistant to acid and alkali corrosion. The structure design adopts an advanced connection method, which is convenient, lightweight, and can easily and completely collect exhaust gas and dust; according to the workplace and indoor environment Select the installation position of the exhaust hood, install the fixing frame in the large hole of the ceiling, and fix the fixing frame on the ceiling with M8 expansion screws. Put it into the exhaust hole of the fixing frame, lock the expansion pipe with the exhaust pipe with a pipe hoop, position the decorative plate and tighten the air collecting hood, connect the exhaust port, and connect the exhaust port with the exhaust system; the expansion pipe It should not exceed 90° in the vertical plane with the fixed frame, otherwise it will rebound; there are pressure bearings and rubber rings in the joint, if it is loose, the knob can be properly tightened.
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