Slagging-off tool for quickly replacing slagging-off head in SCR (selective catalytic reduction) continuous casting and rolling

The utility model discloses a slagging-off tool for quickly replacing a slagging-off head in SCR (selective catalytic reduction) continuous casting and rolling, which comprises a slagging-off head body, a connecting groove is arranged on the surface of the slagging-off head body, a slagging-off rod head is mounted inside the connecting groove, a fixing block is fixedly mounted at the upper end of the slagging-off rod head, and a connecting rod is rotatably mounted inside the fixing block. A fixing rod is mounted at the lower end of the connecting rod; and the connecting wheel is installed at the lower end of the connecting rod, a connecting block is fixedly installed at the front end of the connecting wheel, a movable rod is installed on the outer side of the connecting block, a limiting block is rotatably installed on the outer side of the movable rod, the head of the slagging-off rod is connected with the connecting groove in a clamping mode, and the vertical section of the head of the slagging-off rod is o