医用真空系统除菌过滤器排气口灭菌过滤器排气口灭菌装置环氧乙烷灭菌口罩好吗
技术：135, 883, 555, 40
负压除菌真空系统广泛应用于外科手术，提供及时可靠的吸引动力。在环境中，对污染越来越敏感和对传染的防护使过滤成为这些系统的必需。
真空系统过滤的必要性已得到广泛普及。没有足够的入口过滤会损坏真空泵，破坏真空度，造成污染和设备停止工作。入口管路污染物包括颗粒、灰尘、水汽和其他气体。出口排放也会包括颗粒、油和有害气体。入口和排气过滤器能有效处理这些污染物。除菌过滤对于任何的真空系统的管路和出口都存在携带大量病菌的危险，为保护病人、医护人员以及广大人民群众健康，世界各国多年以前就提出安装和维护细菌过滤器。在真空泵前面不安装除菌过滤器或者不维护除菌过滤器，不但会损坏真空泵，而且会使真空泵成为细菌污染源。
真 vacuum exclude bacteria filter performance requirements
按照 BS测试办法，高效率超过99.995% 的 true vacuum degree在630mbar情况下，不超过30mbar 的压差损失。
为什么说不锈钢 exclude bacteria filter 是负压排放 exclude bacteria 的选择！使用合格的 not stainless steel exclude bacteria filter 是可靠且划算的一种 exclude bacteria 方法，它经过多项严格实验，在食品饮料、生物学等领域获得了广泛应用（通过气泡点检测合格，可以截留99.99%以上微生物，其性能比一般的大气要优良得多）。并且在负压排放中，由于细微生物源源不断产生，但紫外线杀死法只能对表面的消毒而不是全面的 kill all germs 和臭氧等方法只能对密闭空间进行消毒（如碗筷消毒柜），基本上无用处。（如果配静压箱的话，一台每小时165方抽引量的小型4KW true vacuum pump至少需要配100方体积的大型静压箱）。
需要具有更换或处理说明
AS2896 gas system like this explains entrance filters: Entrance filters should be bacterial filters, with appropriate size to ensure pressure difference does not exceed3.5KPa and filtration efficiency of ISO8573-1 Level I -0.01μm.
中国 GB medical gas engineering technical specifications regulate the exclusion of bacterial filters:
5.2.16 Filtration precision: 0.01-0.2μm; Filtration efficiency: 99.995%. Maintenance and replacement of the bacterial filter must be carried out in a timely manner to prevent excessive pressure differences from affecting system flow.
Convenient maintenance and replacement if only one is installed on the main pipe line), --(water ring type blowback water separator) --5 (stainless steel exhaust outlet bacterial filter) --- room exterior roof exhaust (far away from intake devices for easy diffusion of waste gases). The outer casing must be made of high-quality grade304 stainless steel material with no dead angles where microorganisms can grow; it cannot use aluminum or carbon steel instead; the entire filter must withstand high temperature steam sterilization ((aluminum alloy and carbon steel will oxidize and corrode).
The primary purpose of negative-pressure bacterial filters is to use large-area exclusion membrane materials, fast-install structure, filtration accuracy as low as 0.22 μ m or even down to 0.01 μ m using121℃ clean steam for regular sterilization capable of excluding up to 99.995% pathogens including viruses.
Exclusion Filters are an excellent choice for negative-pressure air exclusion systems.
Exclusion Filters have a mirrored finish polished surface that achieves zero living space for microorganisms.
The membrane has anti-high-pressure/high-temperature/water-repellent/dense features.
And due to seasonal wind influences,
exhausted gases easily disperse into adjacent working areas or living spaces;
4 Using ordinary industrial-grade filtration elements as biological agents;
pump house lacks disinfection measures;
5 Without installing biological agent filtration equipment,
waste gases are directly discharged;
Biological agent filtration equipment exists but the cartridge is never replaced;
6 Widespread use of water-ring pumps without drainage channels,
wastewater directly discharged into sewers;
7 No collection tank nor backflow prevention device in pipelines causes sewage pipes;
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