Energy-saving liquid preparation stirring tank

The invention discloses an energy-saving liquid preparation stirring tank which comprises a tank body, a bottom plate is fixedly arranged at the bottom of the tank body, and a plurality of roller devices are arranged at the bottom of the bottom plate; a motor is fixedly arranged in the middle of the right end face of the tank body, a rotating shaft is arranged at the left end of the motor, the motor is sleeved with a dust cover, and a motor controller is fixedly arranged on the dust cover. An impurity filtering device is arranged at the left upper end of the tank body, a first pipe penetrating through hole is formed in the left lower end of the tank body, a backflow pipe penetrates through the first pipe penetrating through hole, and the backflow pipe and the inner wall face of the first pipe penetrating through hole are arranged in a sealed mode; a water pump is arranged in the tank body, an outlet of the water pump is connected with an inlet of a return pipe, and an outlet of the return pipe extends into th