Improved flange plate with good sealing performance

The utility model discloses an improved flange plate with good sealing performance, and relates to the technical field of flange plates, the improved flange plate comprises a flange plate body, the outer surface of the flange plate body is sleeved with a sealing assembly, the upper end of the sealing assembly is provided with a quick release assembly, and a first flange plate and a second flange plate are connected through a screwing screw and a threaded hole B; a ring-shaped sealing rubber ring is arranged between the first flange plate and the second flange plate, then arc-shaped inserting blocks arranged on the inner wall of a lantern ring are correspondingly clamped with the positions of an arc groove A and an arc groove B, and a sliding handle drives a sliding block to be located between two sets of sliding grooves; according to the flange plate with the good sealing effect, the sealing performance of the flange plate can be greatly enhanced through double sealing measures, the sealing performance of the