High temperature resistant dust bag

The utility model belongs to the technical field of the filter bag technique of removing dust and specifically relates to a high temperature resistant dust bag, including the retainer plate, the cyclic annular filter cloth of lower extreme fixedly connected with of retainer plate, cyclic annular filter cloth includes outer cloth, high temperature resistant layer, dusting layer and inlayer cloth, high temperature resistant level is between outer cloth and inlayer cloth, dusting layer is located between high temperature resistant layer and the inlayer cloth, the lower extreme of retainer plate lateral wall is even is equipped with a plurality of vertical strengthening ribs, a plurality of vertical strengthening ribs set up with retainer plate integrated into one piece, a plurality of vertical strengthening ribs are located between dusting layer and the inlayer cloth, the cyclic annular filter cloth outside even a plurality of horizontally connect that have cup jointed encircle, the horizontally connect ring is