Dust bag: dust bag can be selected according to the dust cleaning mode

The dust removal method of bag filter is the main condition to select the type of dust bag. It can first determine whether the dust bag is woven, needle felt, compressed felt or dust bag. As for the detailed specification of dust removal bag, other filtering conditions can be further considered.

1. Vibration ash cleaning

The property of this cleaning method is that the kinetic energy used in the dust removal layer is smaller than that of pulse blowing and reverse blowing, which is a low energy consumption cleaning method. The vibration wave propagation effect of soft woven fabric is better.

2. Anti blowing (anti absorption shrinkage bag) dust

This kind of dust removal method generally uses fabric dust bag, but it can also use felt material with light weight (300 ~ 400 g / m2), soft and small size change. Among them, glass fiber dust bags are used most, most of them are used in large bag filter. There are certain requirements for the hoisting and sewing of the dust removal filter bag. If we don't pay attention, the service life of the dust removal filter bag will be greatly affected.

3. Pulse jet cleaning

The kinetic energy of the ash cleaning system applied to other dust layers by this kind of ash cleaning method is very strong, which is a typical teaching method of external filtering. The fine dust force is very strong, and the residue of a large amount of dust in the yarn structure of the dedusting bag is relatively small. The dedusting bag used is generally felt or needle punched felt. Under the action of pulse injection, the instant deformation of the dust removal filter bag has a great influence, resulting in different stress changes, so it is necessary to use the filter material with strong tension resistance. Friction often occurs between the dust bag and the framework, so it is necessary to use the dust bag with wear resistance, or choose to use various fabrics to design the dust bag.

4. Air ring injection cleaning

As the dust cleaning performance is quite good, the dust removal bag is required to have good rigidity, small pores and good wear resistance. In this way, the dust removal bag does not change and will not fluff when the injection ring moves up and down. Therefore, the use of felt or needle punched felt is limited. It also requires thick and high density felt. The cloth weight should be 600-800g / m2.

5. Pulse back blowing soot cleaning

In the high energy type and low energy type, the dust bag needs to be soft and rigid.

When using fabric dust bag, satin and twill fabrics are suitable. However, needle felt is suitable in terms of dust removal efficiency, filtration speed and bone wear resistance. Needle felt with weight of 300 ~ 600g / m2 is selected. Woven fabrics are rarely used and, if necessary, various surface treatments are applied.

6. Back blowing vibration dust cleaning

The kinetic energy acting on the dust layer is of low energy type. In the early stage, bag filtration was mainly used. At present, the main reason for needle punched felt is to improve the filtering speed. Needled felt needs 280 ー 350g / m2 cloth weight, 1.0 ー 1.3mm thickness and good air permeability.

In the sewing and installation of the dust removal bag, we usually tighten the dust removal bag to prevent stretching during the filtering process. Because when the dust removal bag is stretched to about 2%, the dust removal effect will become worse, so we will consider the technical conditions to prevent stretching during the forming process of the dust removal bag (filter bag).

Liaoning Tianhua Environmental Protection Technology Co., Ltd. is a manufacturer of dust bag, melt blown cloth, filter cloth, PTFE needle felt. Welcome to purchase!