Polytetrafluoroethylene Pall ring with long service life

The utility model discloses a polytetrafluoroethylene Pall ring with long service life, which comprises a Pall ring main body, a window hole arranged on the side wall of the Pall ring main body, a blade arranged on the inner side of the window hole, a metal inner ring arranged on the inner wall of the Pall ring main body, curled edges arranged at the upper end and the lower end of the metal inner ring, and a support ring arranged inside the side wall of the Pall ring main body, a through hole penetrates through the side wall of the metal inner ring, and clamping columns are arranged at the two ends of the through hole. According to the polytetrafluoroethylene Pall ring with the long service life, by arranging the supporting ring, the metal inner ring and the curled edge, the strength of the Pall ring body can be enhanced, so that plastic deformation caused by the cold flow property of a polytetrafluoroethylene material is made up, and the service life of the Pall ring body is prolonged; through the arrangemen