The working principle of a baghouse dust collector can be divided into three main stages: filtration, cleaning, and dust discharge.
1. Filtration Stage: After dust-laden gas enters the dust collector through the inlet, large dust particles first settle into the dust hopper due to the reduced airflow velocity and the action of the guide plates. Fine dust particles rise with the airflow and are trapped on the surface of the filter bags as they pass through. The purified gas is discharged from the inside of the filter bags and enters the atmosphere through the outlet.
2. Cleaning Stage: As dust accumulates on the surface of the filter bags, the air permeability of the filter bags gradually decreases, and the resistance of the dust collector increases. When the resistance reaches a set value, the cleaning system is activated. Taking pulse jet cleaning as an example, compressed air is injected instantaneously into the inside of the filter bags through the jet pipe, causing the filter bags to expand rapidly. The dust layer falls off under inertia and falls into the dust hopper.
3. Dust Discharge Stage: The fallen dust is discharged through the dust discharge device at the bottom of the dust hopper, which can be operated manually or automatically. The ash discharge frequency needs to be adjusted according to the dust accumulation rate to ensure the normal operation of the dust collector.
