Collecting tank

The utility model relates to a collecting tank. The utility model relates to the technical field of storage containers. When material particles in a collecting tank are placed into a packaging bag, the material particles are not prone to falling off; the material particles in the packaging bag need to be weighed; the discharging control is difficult; the problem of low working efficiency is solved, a discharging barrel is further arranged on the side, close to the ground, of a tank body. The tank body is further provided with a base, the base is provided with a gathering box used for shieldingthe discharging barrel, the base is further provided with inserting pieces used for controlling the discharging number, the base is provided with a sliding groove used for allowing the inserting pieces to be connected in a sliding mode, and the discharging barrel is provided with an inserting groove used for allowing the inserting pieces to be inserted in so as to block materials. The dischargingdevice has the advantages