Stirring tank and suspension liquid stirring system

The utility model discloses a stirring tank which comprises a heat preservation tank body, an opening part of the heat preservation tank body is provided with a cover plate capable of being opened, and the cover plate is provided with a guide hole penetrating through the inside and the outside; the stirring device is installed on the cover plate, and the stirring device comprises a stirring rod located on the inner side of the cover plate to extend into the tank cavity of the heat preservation tank body and a rotation driving mechanism used for driving the stirring rod to rotate; and the refrigeration module is used for refrigerating the inner cavity of the heat preservation tank body. According to the stirring tank, the refrigeration module is adopted, and the guide hole is formed in the cover plate, so that sampling can be carried out while stirring is carried out, the sampling precision is ensured, and meanwhile, online sampling use is facilitated. And the rotation driving mechanism is adopted to drive the