作业机理
Operating mechanism
环保除尘设备的作业原理是：依托织造的或毡织(压)的滤布作为过滤资料，当含尘气体经过滤袋时，粉尘被阻留在滤袋的外表，枯燥空气则经过滤袋纤维间的缝隙排走，然后到达分离含尘气体粉尘的意图。它的作业机理是粉尘经过滤布时发生的筛分、惯性、黏附、分散和静电等效果而被捕集。
The work principle of environmental protection equipment is: relying on the weaving fabric or felt (pressure) of the filter cloth as the filter material, when the dust laden gas through the filter bag, the dust is blocked in the bag outside, dry air can pass through the gap between the fiber bag to drain away, then achieve the purpose separation of gas containing dust dust. The operating mechanism of the utility model is that when the dust passes through the filter cloth, the utility model has the effects of screening, inertia, adhesion, dispersion and static electricity.
1.筛分效果
1 screening effect
含尘气体经过滤布时，滤布纤维间的空地或吸附在滤布外表粉尘间的空地把大于空地直径的粉尘别离下来，称为筛分效果。关于新滤布，因为纤维之间的空地很大，这种效果不明显，除尘功率也低。
When the dust laden gas passes through the filter cloth, the open space between the filter cloth fiber or the air surface adsorbed on the surface of the filter cloth is separated from the dust which is larger than the surface area diameter, which is called the screening effect. On the new filter cloth, because of the large space between the fibers, this effect is not obvious, the power is low.
只要在运用必定时刻后，在滤袋外表建立了必定厚度的粉尘层，筛分效果才对比显著。清灰后，因为在滤袋外表以及内部还残留必定量的粉尘，所以仍能坚持较好的除尘功率。
As long as the use of a certain moment, the filter bag in the appearance of the establishment of a certain thickness of the dust layer, the screening effect was significant. After cleaning the dust, because of the appearance of the filter bag and the residue will be fixed in the dust, it is still able to adhere to a better dust power.
关于针刺毡或起绒滤布，因为毡或起绒滤布自身构成扎实的多孔滤层，能够对比充分发挥筛分效果，不完全依托粉尘层来坚持较高的除尘功率。
A needle felt cloth or fleece, fleece or felt because of the porous filter layer is solid, can give full play to compare the screening effect, not completely relying on the dust dust layer to keep the high power.
2.惯性效果
2 inertia effect
含尘气体经过滤布纤维时，大于1μm的粉尘因为惯性效果仍坚持直线运动撞击到纤维上而被捕集。粉尘颗粒直径越大，惯性效果也越大。过滤气速越高，惯性效果也越大，但气速太高，经过滤布的气量也增大，气流会从滤布单薄处穿破，形成除尘功率下降。气速越高，穿破景象越严峻。
When the dust gas passes through the filter cloth fiber, the dust which is larger than 1 m is still arrested because of the inertial effect, and the linear motion is still applied to the fiber. The larger the diameter of dust particles, the greater the inertia effect. The higher the filter gas velocity, the greater the inertia effect, but the gas velocity is too high, the amount of air through the filter cloth is also increased, the air will be worn out from the thin cloth, the formation of dust power down. The higher the gas velocity, the more severe the wearing out.
3.分散效果
3 dispersion effect
当粉尘颗粒在0.2μm以下时，因为粉尘极为细微而发生如气体分子热运动的布朗运动，增加了粉尘与滤布标明的接触时机，使粉尘被捕集。这种分散效果与惯性效果相反，跟着过滤气速的下降而增大，粉尘粒径的减小而增强。以玻璃纤维为例，纤维越细除尘功率越高(见表)。但纤维直径细的压力丢失要比粗的纤维大，耐蚀性也越细越差。
When the dust particles in the 0.2 m or less, because the dust is very subtle and the occurrence of gas molecules such as thermal motion of the Brown movement, increased the dust and the filter cloth marked contact time, so that the dust collection. On the contrary, the dispersion effect is the same as the inertial effect, which increases with the decrease of the filtration velocity and the particle size. Take the glass fiber as an example, the higher the fiber is, the higher the power (see table). However, the pressure loss of the fiber diameter is larger than that of the coarse fiber, and the corrosion resistance is smaller.
4.黏附效果
4 adhesion effect
当含尘气体挨近滤布时，细微的粉尘仍随气流一同运动，若粉尘的半径大于粉尘中心到滤布边际的间隔时，则粉-尘被滤布黏附而被捕集。滤布的空地越小，这种黏附效果也越显
When the dust laden gas is close to the filter cloth, the fine dust still moves along with the air flow. If the radius of the dust is larger than that of the dust center to the margin of the filter cloth, the powder dust is adhered to the filter cloth and is arrested. The smaller the open space of the filter cloth, the more obvious the adhesion effect
著。
The.
5.静电效果
5 electrostatic effect
粉尘颗粒间彼此撞击会发生静电，如果滤布是绝缘体，会使滤布充电。当粉尘和滤布所带的电荷相反时，粉尘就被吸附在滤布上，然后进步除尘功率，使粉尘清理较难。
Dust particles collide with each other will produce static electricity, if the filter cloth is an insulator, the cloth will be charged. When the dust and filter cloth with the opposite charge, the dust is adsorbed on the filter cloth, and then improve the power of dust, dust cleaning difficult.
反之，如果两者所带电荷一样，则发生斥力，粉尘不能吸附到滤布上，使除尘功率下降。所以，静电效果能改进或阻碍滤布的除尘功率。为了确保除尘功率，有必要根据粉尘的电荷性质来挑选滤布。通常静电效果只要在粉尘粒径小于1μm以及过滤气速很低时才显示出来。在外加电场的情况下，可加强静电效果，进步除尘功率。
On the contrary, if the two charges are the same, then the repulsion occurs, the dust can not be adsorbed on the filter cloth, so that the power of dust removal. Therefore, the electrostatic effect can improve or hinder the filter cloth dust power. In order to ensure the power of dust removal, it is necessary to select the filter according to the charge properties of the dust. Usually as long as the electrostatic effect of dust particle size is less than 1 m and the filter gas velocity is very low. In the case of external electric field, the electrostatic effect can be enhanced, and the power of dust removal can be improved.
环保除尘设备的构造
Structure of environmental protection dust removing equipment
环保除尘设备主要由箱体、滤袋(含构造)，清灰装置，灰斗及除灰装置等构成。含尘烟气进入箱体后经过滤袋时粉尘被阻挠在滤袋的外侧，净化后的烟气经滤袋内侧被排出。
Environmental protection equipment is mainly composed of a box body, filter bag (including structure), ash cleaning device, an ash bucket and an ash removing device. When the dust containing flue gas enters into the box body, the dust is blocked on the outside of the filter bag through the filter bag.
除尘的特点
Dust removal characteristics
1.除尘功率高，特别是对微细粉尘也有较高的除尘功率，通常可达99%以上。
1 high power dust removal, especially for fine dust also has a higher power, usually up to more than 99%.
2.适应性强，能够捕集不一样粒径的粉尘。例如，关于高比电阻粉尘，选用袋式除尘器比电除尘器优胜。
2 strong adaptability, can capture different particle size of dust. For example, on the high resistivity dust, the use of bag filter is better than esp.
3.运用灵活，处理风量可由每小时数百立方米到数十万立方米。
3 flexible use, the amount of air can be handled by hundreds of cubic meters per hour to hundreds of thousands of cubic meters.
4.构造简略，能够量体裁衣选用直接套袋的简便袋式除尘器，也可选用功率更高的脉冲清灰袋式除尘器。
4 simple structure, can be tailored by bagging directly the simple bag type dust collector, can also use the pulse bag type dust collector in higher power.
5.作业稳定，便于收回干料，没有污泥处理、腐蚀等疑问，保护简略。
5 stable operation, easy to recover the dry sludge treatment, corrosion, no doubt, simple protection.