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AG环亚国际資訊

  • 你了解的除塵設備有哪些種類?
  • 本站編輯︰宁波AG环亚国际機電設備有限公司發布日期︰2018-05-31 14:45 瀏覽次數︰

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袋式除塵器的形式、種類很多,按清灰方式可以分為機械清灰、逆氣流清灰、脈沖噴吹清灰三類; 按過濾方式可以分為內過濾式和外過濾式兩類;按進出口的位置不同可分為下進風和上進風兩類。
The form and variety of bag filter can be divided into three types: mechanical cleaning, reverse airflow cleaning and pulse blowing, and two types of internal filtration and external filtration, which can be divided into two types according to the position of import and export.
1、脈沖噴吹清灰方式
1. The way of pulsing and blowing ash
壓縮空氣經過噴吹口以很高的速度噴出後誘導圍繞的空氣在極短的時間內噴入濾袋,使濾袋產生快速脹縮。
Compressed air is ejected at high speed through the nozzle, and the surrounding air is sprayed into the filter bag in a very short time, resulting in rapid expansion and shrinkage of the filter bag.
粉塵層的剝離一方面是借助噴吹氣流對粉塵層的剝離力,另一方面則是依靠膨脹濾袋在回縮過程中形成的反向加速度將粉塵甩脫。這種方式的清灰強度大,可以在過濾工作狀態下進行清灰,允許的過濾風速也高。
The stripping of dust layer on one hand is the stripping force of the dust layer by the jet airflow, on the other hand, the dust is removed by the reverse acceleration formed during the retracting process of the expansion filter bag. In this way, the ash removal intensity is large, and the dust removal can be carried out under the filtration working condition, and the permitted filtering speed is also high.
由于脈沖噴吹清灰方式具有很多優點,逐漸成為袋式除塵器的一種主要的清灰方式。
Because of the many advantages of pulse jet cleaning, it has gradually become a main way of dust removal in bag filter.
脈沖噴吹清灰袋式除塵器
Pulse blowing dust cleaning bag filter
2、袋式除塵器
2. Bag type dust collector
逆氣流清灰是采用室外或循環空氣形式與含塵氣流相反的反方向氣流通過濾袋,使其上的塵層脫落,掉入灰斗中。
The reverse airflow ash cleaning is carried out in the form of outdoor or circulating air, which is opposite to the dust laden air flow through the filter bag, so that the dust layer falls off and falls into the ash hopper.
在這種清灰方式中,一方面是由于反方向的清灰氣流在粉塵層上形成的黏性剝離力直接剝離塵層;另一方面,由于氣流方向的改變,濾袋產生脹縮振動,也有助于塵塊的脫落。
On the one hand, the dust layer formed by the reverse direction of the dust flow on the dust layer is directly stripped from the dust layer. On the other hand, the expansion and contraction vibration of the filter bag is produced because of the change of the direction of the air flow, and it also helps the fall of the dust.
逆氣流吹風清灰袋式除塵器
Reverse air blowing dust cleaning bag filter
3、機械清灰式
3. Mechanical cleaning
這種清灰方式可以包括人工振打、機械振打等,是一種最簡單的清灰方式。
This cleaning method can include manual beating, mechanical beating, and so on. It is the simplest way to remove dust.
一般來說,機械振打的濾袋沿軸向的振動分布不均勻,而且加速度衰減較快,濾袋長度一般較短,過濾風速也較小。機械振動清灰袋式除塵器采用機械運動裝置使濾袋作周期性振動,使粘附在濾袋上的塵粒落入灰斗中。
Generally speaking, the vibration distribution of the filter bag in the mechanical vibration is not uniform along the axial direction, and the acceleration attenuation is faster, the length of the filter bag is generally short, and the filtering wind speed is small. The mechanical vibration cleaning bag type dust remover adopts mechanical movement device to make the filter bag vibrate periodically, so that the dust particles adhering to the filter bag fall into the ash hopper.
機械清灰袋式除塵器
Mechanical dust cleaning bag type dust collector
根據振動方式不同,可分為水平振動、垂直振動、扭曲振動三種形式,如下圖所示。
According to different vibration modes, they can be divided into three forms: horizontal vibration, vertical vibration and torsional vibration, as shown in the following figure.
三種振動方式
Three modes of vibration
(a) 為水平振動,有頂部和中部振動兩種;
(a) for horizontal vibration, there are two kinds of vibration: top and middle.
(b) 為垂直振動,它利用偏心輪裝置振打濾袋框架或定期提升濾袋框架進行清灰;
(b) for vertical vibration, it uses the eccentric wheel device to vibrate the filter bag frame or periodically lift the filter bag frame for dust removal.
(c) 為扭曲振動,它利用機械傳動裝置定期將濾袋扭轉一定角度,使塵粒脫落。
(c) for torsional vibration, it uses mechanical transmission device to periodically filter the bag at a certain angle to make the dust fall off.