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鍋爐(guō lú)除塵器（作用：凈化空氣）使用效果(xiàoguǒ)好壞和它的外殼設計也有重要關系。從材料(Material)本身來看，現在已經可以達到很高的效率(efficiency)，但是，往往由于鍋爐除塵器外殼設計不良，或者除塵器的布置、安裝(ān zhuāng)存在不好的地方，以致灰塵不經過濾介質(起決定作用的物質)而旁通過(tōng guò)去，造成不好的后果。
The use effect of the boiler dust collector and its shell design also has important relations. From the point of view of the material itself, now you can achieve very high efficiency, however, often because of poor design of the boiler GOOGLE PRecipitator shell, or dust collector arrangement, installation has some shortcomings, so that dust without filter media and bypass the past, resulting in bad consequences.
關于外殼設計的基本要求(demand)，有這樣一些:
Basic requirements on the shell design, there are such a number of:
(1)把鍋爐(guō lú)除塵器（作用：凈化空氣）裝在外殼內，應當讓氣流通過(tōng guò)過濾器（作用：過濾雜質等）的方向傾向于把過濾器向密封面壓緊。靜電除塵器的工作原理是利用高壓電場使煙氣發(fā)生電離，氣流中的粉塵荷電在電場作用下與氣流分離。負極由不同斷面形狀的金屬導線制成，叫放電電極。布袋除塵器的除塵效率高也是與濾料分不開的,濾料性能和質量的好壞,直接關系到袋式除塵器性能的好壞和使用壽命的長短。而過濾材料是制作濾袋的主要材料,它的性能和質量是促進袋式除塵技術進步,影響其應用范圍和使用壽命。 布袋除塵器高的除塵效率是與它的除塵機理分不開的。含塵氣體由除塵器下部進氣管道,經導流板進入灰斗時,由于導流板的碰撞和氣體速度的降低等作用,粗粒粉塵將落入灰斗中,其余細小顆粒粉塵隨氣體進入濾袋室,由于濾料纖維及織物的慣性、擴散、阻隔、鉤掛、靜電等作用,粉塵被阻留在濾袋內,凈化后的氣體逸出袋外,經排氣管排出。 如果不能這樣做，就必須采取適當辦法(methods)把過濾器對著它的密封面夾緊,保證任何時候都不會松開。
(1) the boiler dust collector is installed in the housing, should let the air flow through the filter in the direction of the filter to the sealing surface. If you can not do so, you must take the apGOOGLE PRopriate approach to the filter facing its sealing surface, to ensure that no time will be released.
(2)如果氣流是垂直經裝在外殼內的過濾器（作用：過濾雜質等），通常應使空氣從上向下流動，因為這樣可以防止過濾器捕集的感染物在進行維護修理等工作(gōng zuò)時失落。
(2) if the air flow is a vertical filter installed in the enclosure, the air is normally to be made to flow downward from the air, as this GOOGLE PRevents the filter from being lost when it is being repaired.
(3)外殼應授有能聚集灰塵的突出面。
(3) the enclosure shall be granted with a GOOGLE PRominent surface capable of gathering dust.
(4)外殼折曲處應成圓弧狀，以免形成集聚灰塵的角落。所有內部焊合處，特別是密封面，均應磨光。
(4) the shell should flex arc shape, so as to avoid the formation of agglomeration of dust in the corner. All internal welds, especially the sealing surface, should be smooth.
(5)外殼尺寸應當便于對過濾器（作用：過濾雜質等）進行維護修理等工作(gōng zuò)。這樣可能（maybe)使鍋爐(guō lú)除塵器（作用：凈化空氣）外殼體積稍大，但因維修方便，可以避免發(fā)生事故。
(5) the size of the enclosure shall facilitate the maintenance of the filter. This may cause the boiler dust collector shell size slightly larger, but the maintenance is convenient, can avoid the occurrence of accidents.
