Micro-fog filter capable of being assembled and expanded

The utility model relates to a micro-fog filter capable of being assembled and expanded. The micro-fog filter capable of being assembled and expanded is composed of an upper cover, a filter cavity, a lower cover, studs, rubber gaskets and a filter element. The upper cover is installed on the filter cavity through the studs. The filter element is installed in the filter cavity. Same as the the upper cover, the lower cover is installed on the filter cavity through the studs. The upper cover and the filter cavity are sealed through the rubber gasket. The lower cover and the filter cavity are sealed through the rubber gasket. The sealing studs are installed on thread holes on two sides of the filter cavity according to actual needs. The micro-fog filter capable of being assembled and expanded has the advantages of being novel in design and reasonable in structure. Series connection of a plurality of single filters can be achieved through threads of the single filters, and the need of multiple filtering can be ach