Pre-foaming tank for polystyrene particles

The utility model discloses a pre-foaming tank for polystyrene particles. Tank body, wherein a feeding pipe and a steam inlet pipe are arranged at the top of the tank body; a discharge pipe is arranged on the side wall of the tank body; a stirring shaft is arranged in the tank body; stirring shaft vertically arranged, the stirring shaft is provided with a plurality of movable stirring rods; a driving motor for driving the stirring shaft to rotate is arranged at the top of the tank body; a visual window is arranged on the side wall of the tank body; a wiping block for scraping dirt on the visual window is arranged on the inner side wall of the visual window; wherein a mounting hole is formed in the side wall of the tank body, a rotating shaft is rotatably connected to the tank body at the mounting hole, a driving part for driving the rotating shaft to rotate is arranged at one end, located outside the tank body, of the rotating shaft, and a linkage assembly for driving the wiping blockto linearly move along th