Filter element capable of being disassembled and recycled as well as mounting method and recycling method of filter element

The invention discloses a filter element capable of being disassembled and recycled as well as a mounting method and a recycling method of the filter element. The filter element comprises a closed end cover, a circulating end cover, a cylindrical filter screen and a cylindrical framework, the closed end cover comprises a closed body, a reserved first supporting groove, a reserved first filter screen groove and a first partition strip, and a communicating hole is formed in the first partition strip. The circulation end cover comprises a circulation body, a second supporting groove, a second filter screen groove and a second partition strip, wherein the second supporting groove and the second filter screen groove are reserved in the circulation body. A communicating hole is formed in the second partition strip. Two ends of the cylindrical filter screen are respectively inserted into the first filter screen groove and the second filter screen groove; two ends of the cylindrical framework are respectively inserte