Filter cartridge

The utility model relates to a filter cartridge. The filter cartridge comprises a top cover, an inner supporting net and a bottom cover, the top cover covers the top of the inner supporting net, the bottom cover is installed at the bottom of the inner supporting net, vent holes are formed in the inner supporting net, and the outer surface of the inner supporting net is covered with a filter material; the top cover and the inner supporting net are connected through a first thread, and the bottom cover and the inner supporting net are connected through a fastener. The filter cartridge provided by the utility model has the advantages of good stability and simplicity in disassembly. 本申请涉及一种滤筒。本申请所述的滤筒包括顶盖、内支撑网和底盖，顶盖盖设于内支撑网的顶部，底盖安装于内支撑网的底部，内支撑网上设有通气孔，内支撑网的外表面覆盖有过滤材料；顶盖和内支撑网之间通过第一螺纹连接，底盖和内支撑网之间通过紧固件连接。本申请所述的滤筒具有稳定性好、拆分简单的优点。