Filter element with inner spring framework

The utility model discloses an inner spring framework filter element, which comprises an assembly table and filter spring pieces uniformly arranged at the top end of the assembly table in a winding manner, the top ends of the filter spring pieces are jointly provided with a concave plate, a limiting mechanism is arranged between the concave plate and the assembly table, and the limiting mechanism is used for vertically limiting the filter spring pieces. A connecting rod is mounted on the inner side of the filtering spring piece, the upper end and the lower end of the connecting rod extend to the position above the concave plate and the position below the assembling table respectively, a reverse osmosis component is mounted on the portion, on the outer side of the connecting rod, of the assembling table, and a sewage draining mechanism is mounted at the bottom end of the assembling table. A clamping nut is installed on the surface of the connecting rod above the concave plate through threads, and a multipurpos