The utility model discloses a quench tower blocks up clearance subassembly and has quench tower system that function was blockked up in clearance. Wherein, quench tower jam clearance subassembly includes: the rig floor, the rig floor has the rig floor mouth, horizontal track, horizontal track setting is in on the rig floor, vertical track, vertical orbital one end with horizontal track links to each other, and can follow horizontal pathway movement, the rig, the rig has drilling rod and drill bit, the drilling rod with vertical track links to each other, and the drilling rod is followed vertical orbital motion, the device also comprises a controlle, the controller with the rig links to each other, is used for control the operation of rig. This quench tower blocks up clearance subassembly, the thing that scars in can effectual clearance hollow circular cylinder, and be particularly useful for in the industry wide application and the inside quench tower that is difficult to the clearance that blocks up, and it is fast, efficient to block up the clearance, and clearance back quench tower internal surface is smoothly cleared up effectually.