Flange connecting device of novel steel wire mesh framework polyethylene composite pipe and construction method of flange connecting device

The invention relates to a novel steel wire mesh framework polyethylene composite pipe flange connecting device and a construction method thereof.The novel steel wire mesh framework polyethylene composite pipe flange connecting device is arranged at the connecting position of a steel wire mesh framework polyethylene composite pipe and comprises a composite pipe, a sleeve, a waterproof layer, a groove, a right flange plate, a protrusion, a left flange plate, a filter screen, a rubber ring, a bolt hole and a locking bolt; the outer surface of the sleeve and the inner surface of the groove are both provided with waterproof layers, the right flange plate and the left flange plate are connected through a locking bolt, the right flange plate is provided with a protrusion and a bolt hole, the left flange plate is provided with a protrusion, a filter screen, a rubber ring and a bolt hole, the protrusion is matched with the groove, and the filter screen is arranged between the left flange plate and the rubber ring. Co