Apparatus for removing dust

The utility model relates to a dust-removing device, which comprises at least one air exhaust pipeline, an exhaust blower, and a dust collecting component, wherein the upper end of the air exhaust pipeline is communicated with a work top. The utility model is characterized in that the lower end of the air exhaust pipeline is connected with an air inlet of the dust collecting component through a connecting bent pipe; an air outlet of the dust collecting component is connected with the air inlet of the exhaust blower; the air outlet of the exhaust blower is connected with an air exhaust pipe, and the air exhaust pipeline, the connecting bent pipe, the dust collecting component, the exhaust blower and the internal part of the air exhaust pipe can form an airflow channel. The utility model causes the dust collecting component to be arranged in front of the exhaust blower; after the air which comprises impurities, such as powder dust, paper fiber, etc., is filtered through the dust collecting component, the air can be clean, and phenomenon that the powder dust can adhere to the exhaust fan blade, the paper fiber, which breaks dynamic balance of the blade can not be caused. The blade needs not to be cleaned; cleanness of the dust collecting component is very convenient, and the internal part of the exhaust fan can not have the danger of explosion accidents generated by dust contents exceeding standards.