Support with lifting refractory brick hearth

The invention discloses a support with a lifting refractory brick hearth. The support comprises a base; the refractory brick hearth is fixedly connected through a hearth support; the hearth support comprises a lead screw and angle steel connected with the lead screw; one end of the lead screw is welded to the bottom surface of a supporting platform; the other end of the lead screw penetrates through the angle steel, and nuts are arranged above and below the penetrating position; a heat preservation bottom plate is arranged at the bottom of the refractory brick hearth; a burner assembly is arranged at the center of the heat preservation bottom plate; and the angle steel is arranged on two sides below the heat preservation bottom plate. The support has the advantages that the distance between the refractory brick hearth and a furnace hole can be adjusted through the lead screw or bolts or a gear when gap of the refractory brick hearth and the furnace hole is generated after a furnace isused for a period of time