Swimming pool filter cartridge

A swimming pool filter cartridge, comprising:

• a filter element comprising radially extending pleats, the pleats comprising a plurality of inner pleats defining a central chamber and a plurality of outer pleats defining an outer contour;
• a body extending through the central chamber and connected to the plurality of inner pleats;
• and
• a fixing element extending circumferentially along the outer contour, the fixing element comprising a head end and a tail end, the head end being provided with a connection head, the tail end being provided with a connection seat, the connection head being detachably connected to the connection seat to allow the head end and the tail end of the fixing element to be connected and sleeved on the plurality of outer pleats, and the plurality of outer pleats being connected to an inner end surface of the fixing element;
• wherein the connection seat defines an insertion cavity for inserting the connection head, a first engaging portion is protruded on an inner wall of the insertion cavity, a second engaging portion is protruded on a sidewall of the connection head facing the first engaging portion, the second engaging portion has a positioning end face, and the second engaging portion extends through the insertion cavity to allow the positioning end face to abut against the first engaging portion.