依据构造方式不同，环保除尘设备规划有2种清灰方法：即在线清灰与离线清灰。
According to the different construction methods, there are 2 kinds of ash cleaning methods in the environmental protection dust removal equipment.
1.在线清灰
1 online cleaning
高压脉冲空气从电磁脉冲阀经过输气管从喷吹孔高速喷出，穿过除尘布袋上方的文丘里管的颈部，包括诱导的二次空气，冲向滤袋内部，沿滤袋长度方向发生短暂的脉冲压力波，将沉积在滤袋外表上的粉尘剥离下来，粉尘落入灰斗，洁净气体经过净气室扫除机外。当电磁阀断电时，脉冲阀膜片关闭、止断高压脉冲气流，一次清灰完毕。
High voltage pulse air from the electromagnetic pulse valve through pipelines from blowing hole high-speed spray through the dust bag above the neck of a Venturi, including two air induction, rushed into the filter bag, along the length of filter bag pulse pressure wave transient, will be deposited in the outer bag dust removing table down, dust hopper clean gas, clean gas chamber cleaning machine after. When the solenoid valve is off, the pulse valve diaphragm closed, stop the high pressure pulse air flow, once the dust cleared.
在线清灰的问题是高压脉冲空气生成的是与主气流逆向的高压气流冲过滤袋使滤袋发生抖动，除掉滤袋外表上集合的粉尘，成片的粉尘落入坐落除尘器下部的灰斗中，再经卸料装置排出机外。在此进程中，高压脉冲空气要战胜主气流的阻力，其强度势必被削弱。除尘器的有用过滤面积也刹那间(毫秒计)削减。从工业视点看，此面积削减对技术体系发生的影响是能够忽略不计的。这些年，在线清灰方法的环保除尘设备，已被广泛应用于各种焊烟、粉尘飞扬的工业作业场合。
Online cleaning is the problem of high voltage pulse air generation is the main flow of the high pressure air reverse and crossed the bag so that the bag dust collection bag of jitter, get rid of appearance, a piece of dust into the dust hopper is located, and after discharging device outside the machine. In this process, the high pressure pulse air to overcome the resistance of the main air flow, its strength will be weakened. The useful filter area of the precipitator is also reduced in an instant (millisecond). From the industrial point of view, the impact of this area reduction on the technical system is negligible. In recent years, the online cleaning dust removal equipment, has been widely used in a variety of welding fume, dust flying industrial occasions.
2.离线清灰
2 off line cleaning
离线清灰要求环保除尘设备规划为多室组合的方式，完成逐室清灰。当某过滤室需求清灰时，该过滤室与主气流阻隔开来，过滤室被阻隔是经过设置在进气口或许出气口的阀门完成的。这个进程大约坚持2～3min。这样的成果致使每一次清灰操作进程中除尘器的总过滤面积(或称为毛过滤面积)被降低了一个室的滤布面积，总过滤面积的削减也致使有用过滤面积(或称净过滤面积)的降低，显然是不经济的，增加了基建出资，与业主愿望相左。从这方面来讲不如在线清灰优胜。但是，从主气流中阻隔开对滤袋施行清灰，从技术上说又有许多长处：
Off line cleaning requirements of environmental protection dust removal equipment planning for multi room combination, the completion of room by room ash cleaning. When a filter chamber needs cleaning, the filter chamber and the main air chamber is separated, filtered through the barrier is arranged between the air inlet or outlet valve complete. This process is about 2 ~ 3min. The results of the total area of the filter dust collector every cleaning operation in the process (or gross filtration area is reduced) a chamber filter area, reduction of total filtration area resulting in useful filter area (or net filtration area decreased obviously) is not the economy, increase infrastructure investment and, the owners will. In this regard is not as good as online ash. However, from the main air cleaning shields on the implementation of the filter bag, technically there are many advantages:
①穿过滤袋的高压脉冲空气量不用很大即可有用清灰，且所需压力较低。
The high voltage pulse air passes through the filter bag can be useful without great cleaning, and the required pressure is low.
②从滤袋外表被铲除下来的成片粉尘有足够的时刻降落入灰斗，再次飞扬的概率很小。
The bag was eradicated down from the appearance of plots of adequate time to fall into the dust hopper, the probability is very small flying again.
③清灰频率降低，滤袋寿数得以延伸。
The cleaning frequency is reduced, the filter bag life can be extended.
④装备脉冲阀数量较少，可削减一次出资和保护作业量。
The equipment of pulse valve is less in quantity, can reduce a contribution and protection work.
⑤清灰所需压缩空气量较少，节约电能。
The cleaning of compressed air required less energy saving.
⑥清灰效率高，环保除尘设备能保持较低的压力降，其成果是使除尘体系的运转费用降低。
The cleaning efficiency is high, environmental protection equipment can keep low pressure drop, the result is the dust removal system to reduce the cost of operation.