正确清洗通风风管的方法和条件
1.动力洗刷：用气动或者电动的毛刷将脏污刷动，然后污物用和气体冲洗相同的方法和方向被吸到真空收集器中。这种方法要求尽可能得小心不于破坏保温材料的表面。
1. power wash: use pneumatic or electric brush to brush dirt, then dirt is sucked into the vacuum collector with the same method and direction as gas washing. This method requires as much care as possible to avoid damaging the surface of the insulation.
2.气体冲洗：这种方法借助连接到风管的配有喷嘴的软管以输送压缩空气。设计喷嘴使得压缩空气能够把尘土和污物驱赶出去。而被压缩空气去干的污物和尘土则顺着风管被输送到真空集容器中。
2. gas flushing: this method delivers compressed air by means of a hose with a nozzle attached to the air pipe. The design nozzle allows compressed air to expel dirt and dirt. Dirt and dust which are compressed air to dry are carried along the duct into the vacuum vessel.
3.真空吸污：用类似有手握式的真空吸污管来操作。用刷子直接接触管道内壁以污物。
3. vacuum suction: operated with a vacuum suction pipe like hand type. Direct contact with the wall of a pipe with a brush to remove dirt.
这种方法需要风管有较大的检修孔使操作的人员能够尽可能够得到。但这种方法可能漏掉一部分尘土和污物，因为风管不能形成完全的负压条件。而以下几种方法可以形成负压条件。
This method requires larger manholes to allow the operator to get as much of it as possible. But this method is most likely to miss out on a fraction of dust and dirt because the duct does not form complete negative pressure conditions. The following methods can form negative pressure conditions.
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Company all-round service to customers, with high quality, reasonable price and perfect after-sales service and customer work hand in hand, and common development. Quality assurance, welcome to consult and negotiate.
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