The low-pressure jet pulse bag filter adopts a small pulse bag filter with pulse cleaning method. It has the advantages of compact structure, simple and reliable cleaning method, convenient filter bag replacement, and high dust collection efficiency. It is widely used in industrial and mining enterprises such as metallurgy, chemical industry, and building materials.

The low-pressure pulse jet long bag dust collector is a new type of bag type dust removal equipment developed on the basis of summarizing various bag dust collectors. It adopts offline low-pressure pulse valve spraying and cleaning technology to prevent dust reattachment and loss of control, enhance the cleaning effect of the filter bag, improve the filtration speed, save cleaning energy consumption, and extend the service life of the filter bag. At the same time, a PLC programmable controller is used to automatically control the entire process of dust cleaning and transportation.

The working principle of low-pressure pulse jet long bag dust removal equipment:

This dust removal equipment mainly consists of an ash hopper, a filter chamber, a clean air chamber, a bracket, a lifting valve, and a spray cleaning device. During work, dusty gas enters the ash hopper through the air duct. Large particles of dust directly fall into the bottom of the ash hopper, while smaller dust enters the filtering chamber upwards with the turning of the airflow and is trapped on the outer surface of the filter bag. The purified flue gas enters the bag and flows through the bag mouth and the clean air chamber into the exhaust outlet, where it is discharged. As the filtration process continues, the dust on the outer surface of the filter bag increases, and the resistance of the equipment also increases. When the resistance of the equipment rises to a certain value, a cleaning operation should be carried out to remove the accumulated dust on the surface of the filter bag.

Performance characteristics of low-pressure pulse jet long bag dust removal equipment:

The PLC programmable controller is used to control the entire operation process of the dust collector. The bag filter adopts low-pressure pulse blowing technology, which has high dust cleaning efficiency and low energy consumption. Use a straight through low-pressure pulse valve. The injection pressure is only 0.2-0.4 MPa, with low resistance, fast opening and closing, and strong dust cleaning ability. Due to the good cleaning effect and long cleaning cycle, the energy consumption of blowback gas is reduced. The filter bag is easy to assemble and disassemble, and can be securely fixed using an upper suction method. When replacing the bag, the filter bag frame is extracted from the clean air chamber of the dust removal equipment, and the dirty bag is put into the ash hopper, which is then removed from the hole to improve the bag replacement environment. The filter bag is fixed to the flower plate hole by the elastic expansion ring at the bag mouth, which is firmly fixed and has good sealing performance. And the pulse valve has a long service life and good reliability. Due to the low injection pressure, the pressure and impact force on the diaphragm of the pulse valve during opening and closing are relatively low. At the same time, due to the longer cleaning cycle, the number of times the pulse valve is opened is correspondingly reduced, thereby extending the service life of the pulse valve and improving its reliability. The equipment has low operating resistance and good spraying effect. The dust removal equipment adopts a segmented pulse back blowing offline dust cleaning method, which avoids the phenomenon of dust being repeatedly adsorbed, improves the effectiveness of pulse blowing dust cleaning, and reduces bag resistance. The air duct adopts a collection pipe layout with a compact structure.