Cartridge dust collector

A filter cartridge dust collector is composed of a filter cartridge as the filtering element or a dust collector using pulse blowing. The filter cartridge dust collector can be divided into inclined insertion type, side installation type, lifting type, and upper installation type according to the installation method. Filter cartridge dust collectors can be divided into long fiber polyester filter cartridge dust collectors, composite fiber filter cartridge dust collectors, anti-static (based on actual reports) filter cartridge dust collectors, flame-retardant filter cartridge dust collectors, membrane filter cartridge dust collectors, filter cartridge dust collectors, etc.

structure

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 arrangement of the filter cartridge in the dust collector is very important. It can be vertically arranged on the box flower board or tilted on the flower board. From the perspective of dust cleaning 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. An airflow distribution plate is installed at the inlet of the dust collector.

Working principle: After the dusty gas enters the ash hopper of the dust collector, due to the sudden expansion of the airflow cross-section and the action of the airflow distribution plate, some 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, the PLC program controls the opening and closing of the pulse valve. Firstly, the lifting valve of the first chamber is closed to cut off the filtered airflow. Then, the electromagnetic pulse valve is opened. Compressed air and a short period of time expand at a suitable speed inside the upper box, flowing into the filter cartridge, causing the filter cartridge to expand and deform, generating vibration. Under the action of the reverse airflow, the dust attached to the outer surface of the filter bag 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 one room and ending with the next cleaning cycle. The fallen dust falls into the ash hopper and is discharged through the ash removal valve.