Heat -resistingly prevent fire door

The utility model discloses a heat -resistingly prevent fire door, including outer door panel, interior door plant and enclose the frame, enclose the periphery that outer door panel and interior door plant were lived in frame fastening block, set up the fire prevention core between outer door panel and the interior door plant, enclose the frame by last diaphragm, down diaphragm, left riser and right riser fasten the concatenation from beginning to end and constitute, at last diaphragm, all be equipped with the inboard fire prevention slot that has a perfect understanding each other of orientation on diaphragm, left riser and the right riser down, lower diaphragm and left riser and right riser splice two frame angles of component the fire trench inslot is provided with the leak protection sprue of difficult fuel wood matter. Its phenomenon that can effectually prevent that fusional liquid core seepage from flowing takes place, maximumly slows down the speed that the intensity of a fire stretchs.