Tool for cutting bottom felt of single crystal furnace

The utility model discloses a tool for cutting a bottom felt of a single crystal furnace, which comprises a fixed shaft and a cutter, the upper port of the cutter is covered with a seal cover, the lower end of the fixed shaft is fixedly connected with the center of the seal cover, the edge of the lower port of the cutter is provided with a circle of helical teeth, the upper end of the fixed shaft is assembled with a pistol electrorotor, and the lower end of the fixed shaft is fixedly connected with the cutter. Four sealing cover through holes penetrating up and down are formed in the sealing cover, when the soft felt in the cutter is removed, the soft felt is ejected downwards from the sealing cover through holes, grooving and pit digging are conducted through electric rotation of a pistol, automation of emptying of the soft felt is achieved, replacement of the soft felt is more efficient and safer, the time consumed by a furnace is shortened, automatic safe operation is achieved, and the production efficienc