Operating principle of welding dust collector: Dust-laden air enters from the lower part, and after primary separation by baffle, coarse-grained dust falls into the lower funnel. The fine dust is guided into the filter chamber and adheres to the surface of the filter bag, and the filtered clean air is discharged through the filter bag. The dust adhering to the surface of the filter bag is cleaned by the air jet backwashing method, and is collected in the lower collection bucket after being shaken and discharged. The filter bag cleaning device is installed on the upper part of the filter bag. During operation, compressed air is instantly injected and 5 to 7 times of secondary compressed air is introduced to make the filter bag expand and vibrate. This expansion effect and the air backwash action are used to achieve cleaning. The effect of the filter bag is that the cleaning time of each group of filter bags is about 0.1 seconds, which has little effect on the filter area, and the cleaning cycle interval of the same group of filter bags is about three minutes. The change is small, and the equipment as a whole can maintain a stable operation.

What are the cleaning methods of the welding dust collector filter element?

(1) The dust cleaning method of the dust filter is mainly to use the high-pressure airflow back-blowing method. Using this method, the airflow is uniform, and the overall dust removal effect is generally good, but the air consumption is relatively large.

(2) Pulse airflow injection, this method is to use the preset parameters of the controller to give a signal to the solenoid valve, instantly open and close the solenoid valve diaphragm, so that the high-pressure gas enters the injection pipe, and uses the rapid expansion force of the gas to shake the filter cartridge. The dust on the surface, the dust removal method of this dust filter is just the opposite of the first one. It consumes less air, saves energy and protects the environment, but the airflow is relatively weak.

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