CDFMLarge and medium-sized pulse bag filter

◆ Characteristics

1 The self resistance of the spraying device is small, and the pulse valve opens and closes quickly, so the spraying pressure is lower than0.1 5-0.25MPa

2 Filter bag length6mThe land area is relatively small.

3 The filter bag is easy to remove and replace, with short contact between people and dust bags, and good operating conditions.

4 Supporting computer control device orPLCReliable work and easy adjustment.

5 The large and medium-sized pulse bag filter is a dust removal equipment developed to meet the needs of larger air volumes. Its characteristics are long filter bags, large quantity, compact equipment, and the ability to handle a large amount of dusty gases.

◆ Working principle

The dusty gas is introduced from the lower part of the middle box, guided by the baffle to the upper part of the middle box and enters the filter bag, while the clean gas is discharged from the upper box. For large and medium-sized dust removal equipment, the design of airflow guiding baffles is crucial. A good baffle can make the flow field inside the dust collector more reasonable, thereby reducing equipment resistance and improving dust removal efficiency.

The connection between the pulse valve and the spray pipe adopts a plug-in method. There are nozzles with varying aperture sizes on the spray pipe, aligned with the center of each filter bag. Design according to standards for each15The strip bags share a pulse valve, and there is no injection Venturi tube at the bag mouth.

To eliminate the phenomenon of dust reattachment after pulse blowing, there is also a pulse bag filter for offline dust cleaning with air stop. It divides the upper box into several small chambers, each equipped with a shut-off valve. When the pulse valve of a certain room is blown, the air stop valve of the room is closed to cut off the dusty airflow, thereby increasing the cleaning effect. The duration of each spray is65-85msCompared to traditional small pulse dust cleaning, the cleaning time is shorter50%It can produce a stronger dust cleaning effect. The dust cleaning control adopts a constant pressure difference control method, or can be timed control.