After the dust-containing gas enters the ash hopper of the industrial dust collector, due to the sudden expansion of the airflow section, some coarse particles in the airflow settle under the action of gravity and inertial force; after entering the filter room, the fine-grained and low-density dust particles pass through the brown The comprehensive effects of diffusion and sieve filtration cause dust to be deposited on the surface of the filter material, and the purified gas enters the air chamber and is discharged by the exhaust pipe through the fan.
The resistance of the cartridge industrial dust collector increases with the thickness of the dust layer on the surface of the filter material. When the resistance reaches a certain value, dust removal is performed. At this time, the pulse controller controls the opening and closing of the pulse valve. When the pulse valve is opened, the compressed air in the bag passes through the pulse valve through the small hole in the blowing pipe, and ejects a high-pressure induced airflow, thereby forming a considerable The induced airflow, which is 1 to 2 times the volume of the induced airflow, enters the filter cartridge together, so that instantaneous positive pressure occurs in the filter cartridge and bulging and micro-motion occur. The dust deposited on the filter material falls off and falls into the ash hopper. The dust collected in the ash hopper is continuously discharged through the ash discharge valve.
This pulse spraying cleaning method is to clean the dust in the order of the filter cartridge. The pulse valve opens and closes to generate a pulse action at a time, and the time required is 0.1 ~ 0.2s. The interval between two adjacent pulse valve opening and closing is 1 ~ 2min; the time required for all filter cartridges to complete one cleaning cycle is 10 ~ 30min. Since the equipment is a pressure-adjusting pulse cleaning, the spray pressure, spray interval and spray cycle should be adjusted according to the resistance of the equipment.
Industrial dust collector, filtering area is from 93 to 4361 m2, and air volume is from 6900m3 / h to 31400m3 / h. Widely used in building materials, cement, metallurgy, machinery, chemical and refractory industries; especially suitable for crushing, packaging, storage roof, clinker cooling machines and various mills and other dust collection systems (or dust removal systems) in cement plants; It is suitable for drying, vertical kiln and coal mill dust collection, but it is necessary to add anti-explosion measures, and the structure of the dust collector must be changed accordingly. It can also be used for dust collection with very high dust concentration gas. For example, the grinding system with O-sepa separator has a gas dust concentration of 1000g / m3 (standard) or more. It can be used without cyclone for pre-dust collection. Dust collector. For the plain and cold regions of northern China, the dust collector can also be applied after adding heating and thermal insulation devices.