Filtering component and dust catcher that has it

The utility model discloses a filtering component and dust catcher that has it, filtering component includes: the plastic width -lock type single -layer sealed packing case comprises a casin, intake pipe and breakwater, the splendid attire has liquid in the box, air inlet and gas outlet have on the box, the intake pipe links to each other with the air inlet, the intake pipe give vent to anger the end position in the box and towards liquid extend or the submergence in liquid, the breakwater is established in the intake pipe and is become to be located the first cavity and the second cavity of breakwater both sides jointly with the space separation who is located the liquid top in the box with the intake pipe, the passageway that overflows that has first cavity of intercommunication and second cavity on the breakwater and/or between the liquid level of breakwater and liquid, second cavity and gas outlet intercommunication. According to the utility model discloses a filtering component is because the breakwater