Dust-free workshop air duct and accessories installation
Dust-free workshop air duct and accessories installation
The air duct system of the dust-free workshop should be equipped with ventilation accessories as required, such as the air valve on the fresh air duct and the exhaust duct to adjust the fresh air ratio, and the electric airtight valve on the fresh air duct to prevent backflow or prevent freezing in winter. The check valve or electric shut-off valve on the exhaust pipe is used to prevent the outdoor air from pouring...
Text label: installation of dust-free workshops, installation of dust-free workshops, installation of air ducts and accessories
Dust-free workshop air duct and accessories installation
The air duct system of the dust-free pharmaceutical cleanroom should be equipped with ventilation accessories as required, such as the air valve on the fresh air duct and the exhaust duct to adjust the fresh air ratio, and the electric airtight valve on the fresh air duct to prevent backflow or prevent freezing in winter. The check valve or electric airtight valve on the exhaust pipe is used to prevent the backflow of outdoor air, etc. The pressure difference value of the dust room; in order to adjust the air volume and pressure difference of each room separately, the branch pipes and air valves of each room should be set separately, and several rooms should not share the branch pipes and regulating air valves; When the adjustment systems are set independently, fire dampers may not be installed at the junction of the horizontal air duct and the vertical main duct.
Considering the two aspects of not affecting the air purification effect and economy, the production materials of the air ducts and accessories of the purification air conditioning system are determined by the degree of purification of the conveyed air. For high cleanliness, materials that are not easy to generate dust are selected. Materials with low dust generation should be selected for low-density ventilation; when the air supply fan is arranged in a separate ventilation room and the air supply main pipe is provided with a backflow prevention facility, ordinary type ventilation equipment can be used; the air duct and accessories of the exhaust system are made of The corrosiveness of the conveyed gas depends on the degree of corrosiveness; the dust-free workshop needs to be regularly disinfected and sterilized. Coatings should be resistant to corrosion by disinfectants. Due to the small wind speed, short straight section and large dust content of the fresh air duct, it is difficult to install an air volume measuring device on the fresh air duct, so the air volume measuring device is usually not used; for the purification air conditioning system with variable fresh air volume, the measurement of fresh air volume It is necessary both in the commissioning and operation phases, so the fresh air volume should be measured in the design phase. Zhongjing Global Purification can provide consulting, planning, design, construction, installation, transformation and other supporting services for clean rooms and clean workshops.
The pressure measuring holes or differential pressure gauges are arranged before and after the air filters at all levels to facilitate monitoring of the resistance changes of the filters during operation, so as to clean or replace them in time. In order to clean or replace in time; due to the large number of high-efficiency air filters at the tuyere of each system, it is not necessary to set up all differential pressure gauges, but not less than 2; the high-efficiency filters of the tuyere at the end of each system Tuyere leak detection and detection filters are used. The monitoring points set up in the purification air conditioning system should be determined according to the system conditions during design. For example, aseptic production facilities need to monitor the following pipe fitting parameters: cleanliness of the production environment; unidirectional flow and its speed in the core area; protection core Air distribution, temperature, humidity, reasonable room pressure difference, and air supply in the operating area.
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