The structure of a filter cartridge dust collector consists of an inlet duct, an exhaust duct, a box, an ash hopper, a cleaning device, a guide device, an airflow distribution plate, a filter cartridge, and an electrical control device, similar to the structure of an air box pulse bag dust collector.
The filter cartridge isdust collectorThe arrangement in the middle is very important. It can be vertically arranged on the box flower board or tilted on the flower board. From the perspective of dust removal effect, vertical arrangement is more reasonable. The lower part of the flower board is the filtering chamber, and the upper part is the pulse chamber of the air box. Installed at the inlet of the dust collectorAirflow distributionBoard.
working principle:
Gas containing dust entersdust collectorAfter the ash hopper, due to the sudden expansion of the airflow cross-sectionAirflow distributionPlate action, a portion of coarse particles in the airflow settle in the ash hopper under the action of dynamic and inertial forces; After the dust particles with fine particle size and low density enter the dust filter chamber, they deposit on the surface of the filter material through a combination of Brownian diffusion and screening effects. The purified gas enters the clean air chamber and is discharged through the exhaust pipe and fan.
The resistance of the filter cartridge dust collector increases with the increase of the thickness of the dust layer on the surface of the filter material. Clean the dust when the resistance reaches a certain specified value. At this time, PLC program controlPulse ValveTo open and close, first close the lifting valve of the first chamber, cut off the filtered airflow, and thenElectromagnetic pulse valveOpen,compressed airAnd in a short period of time, it rapidly expands inside the upper box and rushes inFilter cartridgeCausing the filter cartridge to expand and deform, generating vibration, and adhering to it under the action of reverse airflow flushingfilter-bagThe dust on the outer surface is stripped off and falls into the ash hopper. After the dust cleaning is completed, the electromagnetic pulse valve closes, the lift valve opens, and the chamber returns to the filtering state. The cleaning process is carried out sequentially in each room, starting from the cleaning of the first room and ending with the next cleaning cycle. The fallen dust falls into the ash hopper and is discharged through the ash removal valve.
During this process, it is necessary to regularly replace and clean the filter cartridge to ensure filtration efficiency and accuracy, as dust is not only blocked but also partially deposited during the filtration processfilter materialOn the surface, it increases resistance, so the correct replacement time is generally three to five months!