Thickening agent storage tank

The utility model relates to the technical field of mechanical equipment, in particular to a thickening agent storage tank which comprises a machine shell, a storage box arranged on the machine shell in a sleeving mode and a discharging barrel arranged on the machine shell, the discharging barrel is arranged on the machine shell in a sliding mode in the vertical direction, and a first discharging opening is formed in the side wall of the lower end of the storage box; a first feeding opening used for being communicated with the first discharging opening is formed in the side wall of the upper end of the discharging barrel, and a second discharging opening is formed in the lower end of the discharging barrel. By arranging the drawable discharging barrel in the material storage box, the purpose that the compound thickening agent is used at any time after being discharged is achieved, the compound thickening agent which is not taken out of the material storage box cannot make contact with the outside world, and t