After dust-laden air enters the dust collector, due to sudden expanding airflow end and the role of air distribution plate, some of the large particle falls into hopper because of gravity and inertia; other small and tiny particle comes into filtering chamber, then deposits on media's outer surfaces because of brownie motion and fiber interception. The clean air emerges into the cleaned air chamber and from there it is discharged.
        The resistance of dust collector increases in accordance with expanding of dust concentration. When reaching a setpoint, the pulse valve of cleaning system jets a high speed&pressure airflow to clean the dust. That time PLC controls the open&close of the pulse valve. While opening, the compressed air in packet enters the inner of filter cartridge equably, creates immediate pressure and great surge, and dislodges the dust layer falling into container.
Shen-flow filter with two cartridges together, as one unit more than just forming unit cartridge combined. As the fan effect, when the waste gas into the cartridge dust appearance, they were left to filter blocking. The filtered air from the cartridge Jiejing center into row hairdryer into the atmosphere. Waste dust and gas are effectively purified. When the filter for some time, the appearance of dust retention in cartridge dust rises, the resistance increases to a certain value by a predetermined differential pressure gauge (or time-controlled) lower and upper limits, when the value reaches the upper limit, signal timely delivery to pull away on the pre-pulse control solenoid valve for pulse cleaning cartridge conducted in an orderly manner, after cleaning cartridge resistance decreased, falling only the lower limit, pulse stops cleaning, cycle to work, cartridge through the pulse counter after blowing, the outer surface of the cartridge a clear purge dust, the dust of the trend with the main gas stream and falls under gravity dust hopper.
In order to improve the purification efficiency, thus upgrading, adding a HEPA air filter, composed of the upper and lower one type of ultra-efficient filter. However, due to the limitations of its structure, motivated on the direction of airflow, airflow easily lead to a short circuit, so only suitable for treating low concentrations of dust, for high concentrations of dust, an additional pre-treatment devices, such as increasing a cyclone.